From 6cebb17beece746de86793cd549e84740896cf4a Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 14 Oct 2010 23:55:22 +0000 Subject: connector: remove lazy workqueue creation Commit 1a5645bc (connector: create connector workqueue only while needed once) implements lazy workqueue creation for connector workqueue. With cmwq now in place, lazy workqueue creation doesn't make much sense while adding a lot of complexity. Remove it and allocate an ordered workqueue during initialization. This also removes a call to flush_scheduled_work() which is deprecated and scheduled to be removed. Signed-off-by: Tejun Heo Cc: Frederic Weisbecker Signed-off-by: David S. Miller --- drivers/connector/cn_queue.c | 75 +++++-------------------------------------- drivers/connector/connector.c | 9 +++--- include/linux/connector.h | 8 ----- 3 files changed, 12 insertions(+), 80 deletions(-) diff --git a/drivers/connector/cn_queue.c b/drivers/connector/cn_queue.c index 210338ea222..81270d221e5 100644 --- a/drivers/connector/cn_queue.c +++ b/drivers/connector/cn_queue.c @@ -31,48 +31,6 @@ #include #include - -/* - * This job is sent to the kevent workqueue. - * While no event is once sent to any callback, the connector workqueue - * is not created to avoid a useless waiting kernel task. - * Once the first event is received, we create this dedicated workqueue which - * is necessary because the flow of data can be high and we don't want - * to encumber keventd with that. - */ -static void cn_queue_create(struct work_struct *work) -{ - struct cn_queue_dev *dev; - - dev = container_of(work, struct cn_queue_dev, wq_creation); - - dev->cn_queue = create_singlethread_workqueue(dev->name); - /* If we fail, we will use keventd for all following connector jobs */ - WARN_ON(!dev->cn_queue); -} - -/* - * Queue a data sent to a callback. - * If the connector workqueue is already created, we queue the job on it. - * Otherwise, we queue the job to kevent and queue the connector workqueue - * creation too. - */ -int queue_cn_work(struct cn_callback_entry *cbq, struct work_struct *work) -{ - struct cn_queue_dev *pdev = cbq->pdev; - - if (likely(pdev->cn_queue)) - return queue_work(pdev->cn_queue, work); - - /* Don't create the connector workqueue twice */ - if (atomic_inc_return(&pdev->wq_requested) == 1) - schedule_work(&pdev->wq_creation); - else - atomic_dec(&pdev->wq_requested); - - return schedule_work(work); -} - void cn_queue_wrapper(struct work_struct *work) { struct cn_callback_entry *cbq = @@ -111,11 +69,7 @@ cn_queue_alloc_callback_entry(char *name, struct cb_id *id, static void cn_queue_free_callback(struct cn_callback_entry *cbq) { - /* The first jobs have been sent to kevent, flush them too */ - flush_scheduled_work(); - if (cbq->pdev->cn_queue) - flush_workqueue(cbq->pdev->cn_queue); - + flush_workqueue(cbq->pdev->cn_queue); kfree(cbq); } @@ -193,11 +147,14 @@ struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *nls) atomic_set(&dev->refcnt, 0); INIT_LIST_HEAD(&dev->queue_list); spin_lock_init(&dev->queue_lock); - init_waitqueue_head(&dev->wq_created); dev->nls = nls; - INIT_WORK(&dev->wq_creation, cn_queue_create); + dev->cn_queue = alloc_ordered_workqueue(dev->name, 0); + if (!dev->cn_queue) { + kfree(dev); + return NULL; + } return dev; } @@ -205,25 +162,9 @@ struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *nls) void cn_queue_free_dev(struct cn_queue_dev *dev) { struct cn_callback_entry *cbq, *n; - long timeout; - DEFINE_WAIT(wait); - - /* Flush the first pending jobs queued on kevent */ - flush_scheduled_work(); - - /* If the connector workqueue creation is still pending, wait for it */ - prepare_to_wait(&dev->wq_created, &wait, TASK_UNINTERRUPTIBLE); - if (atomic_read(&dev->wq_requested) && !dev->cn_queue) { - timeout = schedule_timeout(HZ * 2); - if (!timeout && !dev->cn_queue) - WARN_ON(1); - } - finish_wait(&dev->wq_created, &wait); - if (dev->cn_queue) { - flush_workqueue(dev->cn_queue); - destroy_workqueue(dev->cn_queue); - } + flush_workqueue(dev->cn_queue); + destroy_workqueue(dev->cn_queue); spin_lock_bh(&dev->queue_lock); list_for_each_entry_safe(cbq, n, &dev->queue_list, callback_entry) diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c index 1d48f40342c..e16c3fa8d2e 100644 --- a/drivers/connector/connector.c +++ b/drivers/connector/connector.c @@ -133,7 +133,8 @@ static int cn_call_callback(struct sk_buff *skb) __cbq->data.skb == NULL)) { __cbq->data.skb = skb; - if (queue_cn_work(__cbq, &__cbq->work)) + if (queue_work(dev->cbdev->cn_queue, + &__cbq->work)) err = 0; else err = -EINVAL; @@ -148,13 +149,11 @@ static int cn_call_callback(struct sk_buff *skb) d->callback = __cbq->data.callback; d->free = __new_cbq; - __new_cbq->pdev = __cbq->pdev; - INIT_WORK(&__new_cbq->work, &cn_queue_wrapper); - if (queue_cn_work(__new_cbq, - &__new_cbq->work)) + if (queue_work(dev->cbdev->cn_queue, + &__new_cbq->work)) err = 0; else { kfree(__new_cbq); diff --git a/include/linux/connector.h b/include/linux/connector.h index 3a779ffba60..7e8ca75d2da 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -88,12 +88,6 @@ struct cn_queue_dev { unsigned char name[CN_CBQ_NAMELEN]; struct workqueue_struct *cn_queue; - /* Sent to kevent to create cn_queue only when needed */ - struct work_struct wq_creation; - /* Tell if the wq_creation job is pending/completed */ - atomic_t wq_requested; - /* Wait for cn_queue to be created */ - wait_queue_head_t wq_created; struct list_head queue_list; spinlock_t queue_lock; @@ -141,8 +135,6 @@ int cn_netlink_send(struct cn_msg *, u32, gfp_t); int cn_queue_add_callback(struct cn_queue_dev *dev, char *name, struct cb_id *id, void (*callback)(struct cn_msg *, struct netlink_skb_parms *)); void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id); -int queue_cn_work(struct cn_callback_entry *cbq, struct work_struct *work); - struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *); void cn_queue_free_dev(struct cn_queue_dev *dev); -- cgit v1.2.3-70-g09d2 From b21d18b51b31a24d17f883b678432fbdee3d5675 Mon Sep 17 00:00:00 2001 From: Masayuki Ohtake Date: Fri, 15 Oct 2010 03:00:28 +0000 Subject: can: Topcliff: Add PCH_CAN driver. CAN driver of Topcliff PCH Topcliff PCH is the platform controller hub that is going to be used in Intel's upcoming general embedded platform. All IO peripherals in Topcliff PCH are actually devices sitting on AMBA bus. Topcliff PCH has CAN I/F. This driver enables CAN function. Signed-off-by: Masayuki Ohtake Signed-off-by: David S. Miller --- drivers/net/can/Kconfig | 8 + drivers/net/can/Makefile | 1 + drivers/net/can/pch_can.c | 1463 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1472 insertions(+) create mode 100644 drivers/net/can/pch_can.c diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index 9d9e4539443..a0b02bce694 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -82,6 +82,14 @@ config CAN_FLEXCAN ---help--- Say Y here if you want to support for Freescale FlexCAN. +config PCH_CAN + tristate "PCH CAN" + depends on CAN_DEV + ---help--- + This driver is for PCH CAN of Topcliff which is an IOH for x86 + embedded processor. + This driver can access CAN bus. + source "drivers/net/can/mscan/Kconfig" source "drivers/net/can/sja1000/Kconfig" diff --git a/drivers/net/can/Makefile b/drivers/net/can/Makefile index 00575373bbd..90af15a4f10 100644 --- a/drivers/net/can/Makefile +++ b/drivers/net/can/Makefile @@ -17,5 +17,6 @@ obj-$(CONFIG_CAN_MCP251X) += mcp251x.o obj-$(CONFIG_CAN_BFIN) += bfin_can.o obj-$(CONFIG_CAN_JANZ_ICAN3) += janz-ican3.o obj-$(CONFIG_CAN_FLEXCAN) += flexcan.o +obj-$(CONFIG_PCH_CAN) += pch_can.o ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c new file mode 100644 index 00000000000..55ec324caaf --- /dev/null +++ b/drivers/net/can/pch_can.c @@ -0,0 +1,1463 @@ +/* + * Copyright (C) 1999 - 2010 Intel Corporation. + * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MAX_MSG_OBJ 32 +#define MSG_OBJ_RX 0 /* The receive message object flag. */ +#define MSG_OBJ_TX 1 /* The transmit message object flag. */ + +#define ENABLE 1 /* The enable flag */ +#define DISABLE 0 /* The disable flag */ +#define CAN_CTRL_INIT 0x0001 /* The INIT bit of CANCONT register. */ +#define CAN_CTRL_IE 0x0002 /* The IE bit of CAN control register */ +#define CAN_CTRL_IE_SIE_EIE 0x000e +#define CAN_CTRL_CCE 0x0040 +#define CAN_CTRL_OPT 0x0080 /* The OPT bit of CANCONT register. */ +#define CAN_OPT_SILENT 0x0008 /* The Silent bit of CANOPT reg. */ +#define CAN_OPT_LBACK 0x0010 /* The LoopBack bit of CANOPT reg. */ +#define CAN_CMASK_RX_TX_SET 0x00f3 +#define CAN_CMASK_RX_TX_GET 0x0073 +#define CAN_CMASK_ALL 0xff +#define CAN_CMASK_RDWR 0x80 +#define CAN_CMASK_ARB 0x20 +#define CAN_CMASK_CTRL 0x10 +#define CAN_CMASK_MASK 0x40 +#define CAN_CMASK_NEWDAT 0x04 +#define CAN_CMASK_CLRINTPND 0x08 + +#define CAN_IF_MCONT_NEWDAT 0x8000 +#define CAN_IF_MCONT_INTPND 0x2000 +#define CAN_IF_MCONT_UMASK 0x1000 +#define CAN_IF_MCONT_TXIE 0x0800 +#define CAN_IF_MCONT_RXIE 0x0400 +#define CAN_IF_MCONT_RMTEN 0x0200 +#define CAN_IF_MCONT_TXRQXT 0x0100 +#define CAN_IF_MCONT_EOB 0x0080 +#define CAN_IF_MCONT_DLC 0x000f +#define CAN_IF_MCONT_MSGLOST 0x4000 +#define CAN_MASK2_MDIR_MXTD 0xc000 +#define CAN_ID2_DIR 0x2000 +#define CAN_ID_MSGVAL 0x8000 + +#define CAN_STATUS_INT 0x8000 +#define CAN_IF_CREQ_BUSY 0x8000 +#define CAN_ID2_XTD 0x4000 + +#define CAN_REC 0x00007f00 +#define CAN_TEC 0x000000ff + +#define PCH_RX_OK 0x00000010 +#define PCH_TX_OK 0x00000008 +#define PCH_BUS_OFF 0x00000080 +#define PCH_EWARN 0x00000040 +#define PCH_EPASSIV 0x00000020 +#define PCH_LEC0 0x00000001 +#define PCH_LEC1 0x00000002 +#define PCH_LEC2 0x00000004 +#define PCH_LEC_ALL (PCH_LEC0 | PCH_LEC1 | PCH_LEC2) +#define PCH_STUF_ERR PCH_LEC0 +#define PCH_FORM_ERR PCH_LEC1 +#define PCH_ACK_ERR (PCH_LEC0 | PCH_LEC1) +#define PCH_BIT1_ERR PCH_LEC2 +#define PCH_BIT0_ERR (PCH_LEC0 | PCH_LEC2) +#define PCH_CRC_ERR (PCH_LEC1 | PCH_LEC2) + +/* bit position of certain controller bits. */ +#define BIT_BITT_BRP 0 +#define BIT_BITT_SJW 6 +#define BIT_BITT_TSEG1 8 +#define BIT_BITT_TSEG2 12 +#define BIT_IF1_MCONT_RXIE 10 +#define BIT_IF2_MCONT_TXIE 11 +#define BIT_BRPE_BRPE 6 +#define BIT_ES_TXERRCNT 0 +#define BIT_ES_RXERRCNT 8 +#define MSK_BITT_BRP 0x3f +#define MSK_BITT_SJW 0xc0 +#define MSK_BITT_TSEG1 0xf00 +#define MSK_BITT_TSEG2 0x7000 +#define MSK_BRPE_BRPE 0x3c0 +#define MSK_BRPE_GET 0x0f +#define MSK_CTRL_IE_SIE_EIE 0x07 +#define MSK_MCONT_TXIE 0x08 +#define MSK_MCONT_RXIE 0x10 +#define PCH_CAN_NO_TX_BUFF 1 +#define COUNTER_LIMIT 10 + +#define PCH_CAN_CLK 50000000 /* 50MHz */ + +/* Define the number of message object. + * PCH CAN communications are done via Message RAM. + * The Message RAM consists of 32 message objects. */ +#define PCH_RX_OBJ_NUM 26 /* 1~ PCH_RX_OBJ_NUM is Rx*/ +#define PCH_TX_OBJ_NUM 6 /* PCH_RX_OBJ_NUM is RX ~ Tx*/ +#define PCH_OBJ_NUM (PCH_TX_OBJ_NUM + PCH_RX_OBJ_NUM) + +#define PCH_FIFO_THRESH 16 + +enum pch_can_mode { + PCH_CAN_ENABLE, + PCH_CAN_DISABLE, + PCH_CAN_ALL, + PCH_CAN_NONE, + PCH_CAN_STOP, + PCH_CAN_RUN +}; + +struct pch_can_regs { + u32 cont; + u32 stat; + u32 errc; + u32 bitt; + u32 intr; + u32 opt; + u32 brpe; + u32 reserve1; + u32 if1_creq; + u32 if1_cmask; + u32 if1_mask1; + u32 if1_mask2; + u32 if1_id1; + u32 if1_id2; + u32 if1_mcont; + u32 if1_dataa1; + u32 if1_dataa2; + u32 if1_datab1; + u32 if1_datab2; + u32 reserve2; + u32 reserve3[12]; + u32 if2_creq; + u32 if2_cmask; + u32 if2_mask1; + u32 if2_mask2; + u32 if2_id1; + u32 if2_id2; + u32 if2_mcont; + u32 if2_dataa1; + u32 if2_dataa2; + u32 if2_datab1; + u32 if2_datab2; + u32 reserve4; + u32 reserve5[20]; + u32 treq1; + u32 treq2; + u32 reserve6[2]; + u32 reserve7[56]; + u32 reserve8[3]; + u32 srst; +}; + +struct pch_can_priv { + struct can_priv can; + unsigned int can_num; + struct pci_dev *dev; + unsigned int tx_enable[MAX_MSG_OBJ]; + unsigned int rx_enable[MAX_MSG_OBJ]; + unsigned int rx_link[MAX_MSG_OBJ]; + unsigned int int_enables; + unsigned int int_stat; + struct net_device *ndev; + spinlock_t msgif_reg_lock; /* Message Interface Registers Access Lock*/ + unsigned int msg_obj[MAX_MSG_OBJ]; + struct pch_can_regs __iomem *regs; + struct napi_struct napi; + unsigned int tx_obj; /* Point next Tx Obj index */ + unsigned int use_msi; +}; + +static struct can_bittiming_const pch_can_bittiming_const = { + .name = KBUILD_MODNAME, + .tseg1_min = 1, + .tseg1_max = 16, + .tseg2_min = 1, + .tseg2_max = 8, + .sjw_max = 4, + .brp_min = 1, + .brp_max = 1024, /* 6bit + extended 4bit */ + .brp_inc = 1, +}; + +static DEFINE_PCI_DEVICE_TABLE(pch_pci_tbl) = { + {PCI_VENDOR_ID_INTEL, 0x8818, PCI_ANY_ID, PCI_ANY_ID,}, + {0,} +}; +MODULE_DEVICE_TABLE(pci, pch_pci_tbl); + +static inline void pch_can_bit_set(u32 *addr, u32 mask) +{ + iowrite32(ioread32(addr) | mask, addr); +} + +static inline void pch_can_bit_clear(u32 *addr, u32 mask) +{ + iowrite32(ioread32(addr) & ~mask, addr); +} + +static void pch_can_set_run_mode(struct pch_can_priv *priv, + enum pch_can_mode mode) +{ + switch (mode) { + case PCH_CAN_RUN: + pch_can_bit_clear(&priv->regs->cont, CAN_CTRL_INIT); + break; + + case PCH_CAN_STOP: + pch_can_bit_set(&priv->regs->cont, CAN_CTRL_INIT); + break; + + default: + dev_err(&priv->ndev->dev, "%s -> Invalid Mode.\n", __func__); + break; + } +} + +static void pch_can_set_optmode(struct pch_can_priv *priv) +{ + u32 reg_val = ioread32(&priv->regs->opt); + + if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) + reg_val |= CAN_OPT_SILENT; + + if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) + reg_val |= CAN_OPT_LBACK; + + pch_can_bit_set(&priv->regs->cont, CAN_CTRL_OPT); + iowrite32(reg_val, &priv->regs->opt); +} + +static void pch_can_set_int_custom(struct pch_can_priv *priv) +{ + /* Clearing the IE, SIE and EIE bits of Can control register. */ + pch_can_bit_clear(&priv->regs->cont, CAN_CTRL_IE_SIE_EIE); + + /* Appropriately setting them. */ + pch_can_bit_set(&priv->regs->cont, + ((priv->int_enables & MSK_CTRL_IE_SIE_EIE) << 1)); +} + +/* This function retrieves interrupt enabled for the CAN device. */ +static void pch_can_get_int_enables(struct pch_can_priv *priv, u32 *enables) +{ + /* Obtaining the status of IE, SIE and EIE interrupt bits. */ + *enables = ((ioread32(&priv->regs->cont) & CAN_CTRL_IE_SIE_EIE) >> 1); +} + +static void pch_can_set_int_enables(struct pch_can_priv *priv, + enum pch_can_mode interrupt_no) +{ + switch (interrupt_no) { + case PCH_CAN_ENABLE: + pch_can_bit_set(&priv->regs->cont, CAN_CTRL_IE); + break; + + case PCH_CAN_DISABLE: + pch_can_bit_clear(&priv->regs->cont, CAN_CTRL_IE); + break; + + case PCH_CAN_ALL: + pch_can_bit_set(&priv->regs->cont, CAN_CTRL_IE_SIE_EIE); + break; + + case PCH_CAN_NONE: + pch_can_bit_clear(&priv->regs->cont, CAN_CTRL_IE_SIE_EIE); + break; + + default: + dev_err(&priv->ndev->dev, "Invalid interrupt number.\n"); + break; + } +} + +static void pch_can_check_if_busy(u32 __iomem *creq_addr, u32 num) +{ + u32 counter = COUNTER_LIMIT; + u32 ifx_creq; + + iowrite32(num, creq_addr); + while (counter) { + ifx_creq = ioread32(creq_addr) & CAN_IF_CREQ_BUSY; + if (!ifx_creq) + break; + counter--; + udelay(1); + } + if (!counter) + pr_err("%s:IF1 BUSY Flag is set forever.\n", __func__); +} + +static void pch_can_set_rx_enable(struct pch_can_priv *priv, u32 buff_num, + u32 set) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + /* Reading the receive buffer data from RAM to Interface1 registers */ + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, buff_num); + + /* Setting the IF1MASK1 register to access MsgVal and RxIE bits */ + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_ARB | CAN_CMASK_CTRL, + &priv->regs->if1_cmask); + + if (set == ENABLE) { + /* Setting the MsgVal and RxIE bits */ + pch_can_bit_set(&priv->regs->if1_mcont, CAN_IF_MCONT_RXIE); + pch_can_bit_set(&priv->regs->if1_id2, CAN_ID_MSGVAL); + + } else if (set == DISABLE) { + /* Resetting the MsgVal and RxIE bits */ + pch_can_bit_clear(&priv->regs->if1_mcont, CAN_IF_MCONT_RXIE); + pch_can_bit_clear(&priv->regs->if1_id2, CAN_ID_MSGVAL); + } + + pch_can_check_if_busy(&priv->regs->if1_creq, buff_num); + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static void pch_can_rx_enable_all(struct pch_can_priv *priv) +{ + int i; + + /* Traversing to obtain the object configured as receivers. */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_RX) + pch_can_set_rx_enable(priv, i + 1, ENABLE); + } +} + +static void pch_can_rx_disable_all(struct pch_can_priv *priv) +{ + int i; + + /* Traversing to obtain the object configured as receivers. */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_RX) + pch_can_set_rx_enable(priv, i + 1, DISABLE); + } +} + +static void pch_can_set_tx_enable(struct pch_can_priv *priv, u32 buff_num, + u32 set) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + /* Reading the Msg buffer from Message RAM to Interface2 registers. */ + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if2_cmask); + pch_can_check_if_busy(&priv->regs->if2_creq, buff_num); + + /* Setting the IF2CMASK register for accessing the + MsgVal and TxIE bits */ + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_ARB | CAN_CMASK_CTRL, + &priv->regs->if2_cmask); + + if (set == ENABLE) { + /* Setting the MsgVal and TxIE bits */ + pch_can_bit_set(&priv->regs->if2_mcont, CAN_IF_MCONT_TXIE); + pch_can_bit_set(&priv->regs->if2_id2, CAN_ID_MSGVAL); + } else if (set == DISABLE) { + /* Resetting the MsgVal and TxIE bits. */ + pch_can_bit_clear(&priv->regs->if2_mcont, CAN_IF_MCONT_TXIE); + pch_can_bit_clear(&priv->regs->if2_id2, CAN_ID_MSGVAL); + } + + pch_can_check_if_busy(&priv->regs->if2_creq, buff_num); + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static void pch_can_tx_enable_all(struct pch_can_priv *priv) +{ + int i; + + /* Traversing to obtain the object configured as transmit object. */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_TX) + pch_can_set_tx_enable(priv, i + 1, ENABLE); + } +} + +static void pch_can_tx_disable_all(struct pch_can_priv *priv) +{ + int i; + + /* Traversing to obtain the object configured as transmit object. */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_TX) + pch_can_set_tx_enable(priv, i + 1, DISABLE); + } +} + +static void pch_can_get_rx_enable(struct pch_can_priv *priv, u32 buff_num, + u32 *enable) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, buff_num); + + if (((ioread32(&priv->regs->if1_id2)) & CAN_ID_MSGVAL) && + ((ioread32(&priv->regs->if1_mcont)) & + CAN_IF_MCONT_RXIE)) + *enable = ENABLE; + else + *enable = DISABLE; + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static void pch_can_get_tx_enable(struct pch_can_priv *priv, u32 buff_num, + u32 *enable) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if2_cmask); + pch_can_check_if_busy(&priv->regs->if2_creq, buff_num); + + if (((ioread32(&priv->regs->if2_id2)) & CAN_ID_MSGVAL) && + ((ioread32(&priv->regs->if2_mcont)) & + CAN_IF_MCONT_TXIE)) { + *enable = ENABLE; + } else { + *enable = DISABLE; + } + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static int pch_can_int_pending(struct pch_can_priv *priv) +{ + return ioread32(&priv->regs->intr) & 0xffff; +} + +static void pch_can_set_rx_buffer_link(struct pch_can_priv *priv, + u32 buffer_num, u32 set) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, buffer_num); + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_CTRL, &priv->regs->if1_cmask); + if (set == ENABLE) + pch_can_bit_clear(&priv->regs->if1_mcont, CAN_IF_MCONT_EOB); + else + pch_can_bit_set(&priv->regs->if1_mcont, CAN_IF_MCONT_EOB); + + pch_can_check_if_busy(&priv->regs->if1_creq, buffer_num); + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static void pch_can_get_rx_buffer_link(struct pch_can_priv *priv, + u32 buffer_num, u32 *link) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, buffer_num); + + if (ioread32(&priv->regs->if1_mcont) & CAN_IF_MCONT_EOB) + *link = DISABLE; + else + *link = ENABLE; + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static void pch_can_clear_buffers(struct pch_can_priv *priv) +{ + int i; + + for (i = 0; i < PCH_RX_OBJ_NUM; i++) { + iowrite32(CAN_CMASK_RX_TX_SET, &priv->regs->if1_cmask); + iowrite32(0xffff, &priv->regs->if1_mask1); + iowrite32(0xffff, &priv->regs->if1_mask2); + iowrite32(0x0, &priv->regs->if1_id1); + iowrite32(0x0, &priv->regs->if1_id2); + iowrite32(0x0, &priv->regs->if1_mcont); + iowrite32(0x0, &priv->regs->if1_dataa1); + iowrite32(0x0, &priv->regs->if1_dataa2); + iowrite32(0x0, &priv->regs->if1_datab1); + iowrite32(0x0, &priv->regs->if1_datab2); + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_MASK | + CAN_CMASK_ARB | CAN_CMASK_CTRL, + &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, i+1); + } + + for (i = i; i < PCH_OBJ_NUM; i++) { + iowrite32(CAN_CMASK_RX_TX_SET, &priv->regs->if2_cmask); + iowrite32(0xffff, &priv->regs->if2_mask1); + iowrite32(0xffff, &priv->regs->if2_mask2); + iowrite32(0x0, &priv->regs->if2_id1); + iowrite32(0x0, &priv->regs->if2_id2); + iowrite32(0x0, &priv->regs->if2_mcont); + iowrite32(0x0, &priv->regs->if2_dataa1); + iowrite32(0x0, &priv->regs->if2_dataa2); + iowrite32(0x0, &priv->regs->if2_datab1); + iowrite32(0x0, &priv->regs->if2_datab2); + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_MASK | + CAN_CMASK_ARB | CAN_CMASK_CTRL, + &priv->regs->if2_cmask); + pch_can_check_if_busy(&priv->regs->if2_creq, i+1); + } +} + +static void pch_can_config_rx_tx_buffers(struct pch_can_priv *priv) +{ + int i; + unsigned long flags; + + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_RX) { + iowrite32(CAN_CMASK_RX_TX_GET, + &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, i+1); + + iowrite32(0x0, &priv->regs->if1_id1); + iowrite32(0x0, &priv->regs->if1_id2); + + pch_can_bit_set(&priv->regs->if1_mcont, + CAN_IF_MCONT_UMASK); + + /* Set FIFO mode set to 0 except last Rx Obj*/ + pch_can_bit_clear(&priv->regs->if1_mcont, + CAN_IF_MCONT_EOB); + /* In case FIFO mode, Last EoB of Rx Obj must be 1 */ + if (i == (PCH_RX_OBJ_NUM - 1)) + pch_can_bit_set(&priv->regs->if1_mcont, + CAN_IF_MCONT_EOB); + + iowrite32(0, &priv->regs->if1_mask1); + pch_can_bit_clear(&priv->regs->if1_mask2, + 0x1fff | CAN_MASK2_MDIR_MXTD); + + /* Setting CMASK for writing */ + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_MASK | + CAN_CMASK_ARB | CAN_CMASK_CTRL, + &priv->regs->if1_cmask); + + pch_can_check_if_busy(&priv->regs->if1_creq, i+1); + } else if (priv->msg_obj[i] == MSG_OBJ_TX) { + iowrite32(CAN_CMASK_RX_TX_GET, + &priv->regs->if2_cmask); + pch_can_check_if_busy(&priv->regs->if2_creq, i+1); + + /* Resetting DIR bit for reception */ + iowrite32(0x0, &priv->regs->if2_id1); + iowrite32(0x0, &priv->regs->if2_id2); + pch_can_bit_set(&priv->regs->if2_id2, CAN_ID2_DIR); + + /* Setting EOB bit for transmitter */ + iowrite32(CAN_IF_MCONT_EOB, &priv->regs->if2_mcont); + + pch_can_bit_set(&priv->regs->if2_mcont, + CAN_IF_MCONT_UMASK); + + iowrite32(0, &priv->regs->if2_mask1); + pch_can_bit_clear(&priv->regs->if2_mask2, 0x1fff); + + /* Setting CMASK for writing */ + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_MASK | + CAN_CMASK_ARB | CAN_CMASK_CTRL, + &priv->regs->if2_cmask); + + pch_can_check_if_busy(&priv->regs->if2_creq, i+1); + } + } + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); +} + +static void pch_can_init(struct pch_can_priv *priv) +{ + /* Stopping the Can device. */ + pch_can_set_run_mode(priv, PCH_CAN_STOP); + + /* Clearing all the message object buffers. */ + pch_can_clear_buffers(priv); + + /* Configuring the respective message object as either rx/tx object. */ + pch_can_config_rx_tx_buffers(priv); + + /* Enabling the interrupts. */ + pch_can_set_int_enables(priv, PCH_CAN_ALL); +} + +static void pch_can_release(struct pch_can_priv *priv) +{ + /* Stooping the CAN device. */ + pch_can_set_run_mode(priv, PCH_CAN_STOP); + + /* Disabling the interrupts. */ + pch_can_set_int_enables(priv, PCH_CAN_NONE); + + /* Disabling all the receive object. */ + pch_can_rx_disable_all(priv); + + /* Disabling all the transmit object. */ + pch_can_tx_disable_all(priv); +} + +/* This function clears interrupt(s) from the CAN device. */ +static void pch_can_int_clr(struct pch_can_priv *priv, u32 mask) +{ + if (mask == CAN_STATUS_INT) { + ioread32(&priv->regs->stat); + return; + } + + /* Clear interrupt for transmit object */ + if (priv->msg_obj[mask - 1] == MSG_OBJ_TX) { + /* Setting CMASK for clearing interrupts for + frame transmission. */ + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_CTRL | CAN_CMASK_ARB, + &priv->regs->if2_cmask); + + /* Resetting the ID registers. */ + pch_can_bit_set(&priv->regs->if2_id2, + CAN_ID2_DIR | (0x7ff << 2)); + iowrite32(0x0, &priv->regs->if2_id1); + + /* Claring NewDat, TxRqst & IntPnd */ + pch_can_bit_clear(&priv->regs->if2_mcont, + CAN_IF_MCONT_NEWDAT | CAN_IF_MCONT_INTPND | + CAN_IF_MCONT_TXRQXT); + pch_can_check_if_busy(&priv->regs->if2_creq, mask); + } else if (priv->msg_obj[mask - 1] == MSG_OBJ_RX) { + /* Setting CMASK for clearing the reception interrupts. */ + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_CTRL | CAN_CMASK_ARB, + &priv->regs->if1_cmask); + + /* Clearing the Dir bit. */ + pch_can_bit_clear(&priv->regs->if1_id2, CAN_ID2_DIR); + + /* Clearing NewDat & IntPnd */ + pch_can_bit_clear(&priv->regs->if1_mcont, + CAN_IF_MCONT_NEWDAT | CAN_IF_MCONT_INTPND); + + pch_can_check_if_busy(&priv->regs->if1_creq, mask); + } +} + +static int pch_can_get_buffer_status(struct pch_can_priv *priv) +{ + return (ioread32(&priv->regs->treq1) & 0xffff) | + ((ioread32(&priv->regs->treq2) & 0xffff) << 16); +} + +static void pch_can_reset(struct pch_can_priv *priv) +{ + /* write to sw reset register */ + iowrite32(1, &priv->regs->srst); + iowrite32(0, &priv->regs->srst); +} + +static void pch_can_error(struct net_device *ndev, u32 status) +{ + struct sk_buff *skb; + struct pch_can_priv *priv = netdev_priv(ndev); + struct can_frame *cf; + u32 errc; + struct net_device_stats *stats = &(priv->ndev->stats); + enum can_state state = priv->can.state; + + skb = alloc_can_err_skb(ndev, &cf); + if (!skb) + return; + + if (status & PCH_BUS_OFF) { + pch_can_tx_disable_all(priv); + pch_can_rx_disable_all(priv); + state = CAN_STATE_BUS_OFF; + cf->can_id |= CAN_ERR_BUSOFF; + can_bus_off(ndev); + pch_can_set_run_mode(priv, PCH_CAN_RUN); + dev_err(&ndev->dev, "%s -> Bus Off occurres.\n", __func__); + } + + /* Warning interrupt. */ + if (status & PCH_EWARN) { + state = CAN_STATE_ERROR_WARNING; + priv->can.can_stats.error_warning++; + cf->can_id |= CAN_ERR_CRTL; + errc = ioread32(&priv->regs->errc); + if (((errc & CAN_REC) >> 8) > 96) + cf->data[1] |= CAN_ERR_CRTL_RX_WARNING; + if ((errc & CAN_TEC) > 96) + cf->data[1] |= CAN_ERR_CRTL_TX_WARNING; + dev_warn(&ndev->dev, + "%s -> Error Counter is more than 96.\n", __func__); + } + /* Error passive interrupt. */ + if (status & PCH_EPASSIV) { + priv->can.can_stats.error_passive++; + state = CAN_STATE_ERROR_PASSIVE; + cf->can_id |= CAN_ERR_CRTL; + errc = ioread32(&priv->regs->errc); + if (((errc & CAN_REC) >> 8) > 127) + cf->data[1] |= CAN_ERR_CRTL_RX_PASSIVE; + if ((errc & CAN_TEC) > 127) + cf->data[1] |= CAN_ERR_CRTL_TX_PASSIVE; + dev_err(&ndev->dev, + "%s -> CAN controller is ERROR PASSIVE .\n", __func__); + } + + if (status & PCH_LEC_ALL) { + priv->can.can_stats.bus_error++; + stats->rx_errors++; + switch (status & PCH_LEC_ALL) { + case PCH_STUF_ERR: + cf->data[2] |= CAN_ERR_PROT_STUFF; + break; + case PCH_FORM_ERR: + cf->data[2] |= CAN_ERR_PROT_FORM; + break; + case PCH_ACK_ERR: + cf->data[2] |= CAN_ERR_PROT_LOC_ACK | + CAN_ERR_PROT_LOC_ACK_DEL; + break; + case PCH_BIT1_ERR: + case PCH_BIT0_ERR: + cf->data[2] |= CAN_ERR_PROT_BIT; + break; + case PCH_CRC_ERR: + cf->data[2] |= CAN_ERR_PROT_LOC_CRC_SEQ | + CAN_ERR_PROT_LOC_CRC_DEL; + break; + default: + iowrite32(status | PCH_LEC_ALL, &priv->regs->stat); + break; + } + + } + + priv->can.state = state; + netif_rx(skb); + + stats->rx_packets++; + stats->rx_bytes += cf->can_dlc; +} + +static irqreturn_t pch_can_interrupt(int irq, void *dev_id) +{ + struct net_device *ndev = (struct net_device *)dev_id; + struct pch_can_priv *priv = netdev_priv(ndev); + + pch_can_set_int_enables(priv, PCH_CAN_NONE); + + napi_schedule(&priv->napi); + + return IRQ_HANDLED; +} + +static int pch_can_rx_normal(struct net_device *ndev, u32 int_stat) +{ + u32 reg; + canid_t id; + u32 ide; + u32 rtr; + int i, j, k; + int rcv_pkts = 0; + struct sk_buff *skb; + struct can_frame *cf; + struct pch_can_priv *priv = netdev_priv(ndev); + struct net_device_stats *stats = &(priv->ndev->stats); + + /* Reading the messsage object from the Message RAM */ + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, int_stat); + + /* Reading the MCONT register. */ + reg = ioread32(&priv->regs->if1_mcont); + reg &= 0xffff; + + for (k = int_stat; !(reg & CAN_IF_MCONT_EOB); k++) { + /* If MsgLost bit set. */ + if (reg & CAN_IF_MCONT_MSGLOST) { + dev_err(&priv->ndev->dev, "Msg Obj is overwritten.\n"); + pch_can_bit_clear(&priv->regs->if1_mcont, + CAN_IF_MCONT_MSGLOST); + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_CTRL, + &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, k); + + skb = alloc_can_err_skb(ndev, &cf); + if (!skb) + return -ENOMEM; + + priv->can.can_stats.error_passive++; + priv->can.state = CAN_STATE_ERROR_PASSIVE; + cf->can_id |= CAN_ERR_CRTL; + cf->data[1] |= CAN_ERR_CRTL_RX_OVERFLOW; + cf->data[2] |= CAN_ERR_PROT_OVERLOAD; + stats->rx_packets++; + stats->rx_bytes += cf->can_dlc; + + netif_receive_skb(skb); + rcv_pkts++; + goto RX_NEXT; + } + if (!(reg & CAN_IF_MCONT_NEWDAT)) + goto RX_NEXT; + + skb = alloc_can_skb(priv->ndev, &cf); + if (!skb) + return -ENOMEM; + + /* Get Received data */ + ide = ((ioread32(&priv->regs->if1_id2)) & CAN_ID2_XTD) >> 14; + if (ide) { + id = (ioread32(&priv->regs->if1_id1) & 0xffff); + id |= (((ioread32(&priv->regs->if1_id2)) & + 0x1fff) << 16); + cf->can_id = (id & CAN_EFF_MASK) | CAN_EFF_FLAG; + } else { + id = (((ioread32(&priv->regs->if1_id2)) & + (CAN_SFF_MASK << 2)) >> 2); + cf->can_id = (id & CAN_SFF_MASK); + } + + rtr = (ioread32(&priv->regs->if1_id2) & CAN_ID2_DIR); + if (rtr) { + cf->can_dlc = 0; + cf->can_id |= CAN_RTR_FLAG; + } else { + cf->can_dlc = ((ioread32(&priv->regs->if1_mcont)) & + 0x0f); + } + + for (i = 0, j = 0; i < cf->can_dlc; j++) { + reg = ioread32(&priv->regs->if1_dataa1 + j*4); + cf->data[i++] = cpu_to_le32(reg & 0xff); + if (i == cf->can_dlc) + break; + cf->data[i++] = cpu_to_le32((reg >> 8) & 0xff); + } + + netif_receive_skb(skb); + rcv_pkts++; + stats->rx_packets++; + stats->rx_bytes += cf->can_dlc; + + if (k < PCH_FIFO_THRESH) { + iowrite32(CAN_CMASK_RDWR | CAN_CMASK_CTRL | + CAN_CMASK_ARB, &priv->regs->if1_cmask); + + /* Clearing the Dir bit. */ + pch_can_bit_clear(&priv->regs->if1_id2, CAN_ID2_DIR); + + /* Clearing NewDat & IntPnd */ + pch_can_bit_clear(&priv->regs->if1_mcont, + CAN_IF_MCONT_INTPND); + pch_can_check_if_busy(&priv->regs->if1_creq, k); + } else if (k > PCH_FIFO_THRESH) { + pch_can_int_clr(priv, k); + } else if (k == PCH_FIFO_THRESH) { + int cnt; + for (cnt = 0; cnt < PCH_FIFO_THRESH; cnt++) + pch_can_int_clr(priv, cnt+1); + } +RX_NEXT: + /* Reading the messsage object from the Message RAM */ + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if1_cmask); + pch_can_check_if_busy(&priv->regs->if1_creq, k + 1); + reg = ioread32(&priv->regs->if1_mcont); + } + + return rcv_pkts; +} +static int pch_can_rx_poll(struct napi_struct *napi, int quota) +{ + struct net_device *ndev = napi->dev; + struct pch_can_priv *priv = netdev_priv(ndev); + struct net_device_stats *stats = &(priv->ndev->stats); + u32 dlc; + u32 int_stat; + int rcv_pkts = 0; + u32 reg_stat; + unsigned long flags; + + int_stat = pch_can_int_pending(priv); + if (!int_stat) + return 0; + +INT_STAT: + if (int_stat == CAN_STATUS_INT) { + reg_stat = ioread32(&priv->regs->stat); + if (reg_stat & (PCH_BUS_OFF | PCH_LEC_ALL)) { + if ((reg_stat & PCH_LEC_ALL) != PCH_LEC_ALL) + pch_can_error(ndev, reg_stat); + } + + if (reg_stat & PCH_TX_OK) { + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if2_cmask); + pch_can_check_if_busy(&priv->regs->if2_creq, + ioread32(&priv->regs->intr)); + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); + pch_can_bit_clear(&priv->regs->stat, PCH_TX_OK); + } + + if (reg_stat & PCH_RX_OK) + pch_can_bit_clear(&priv->regs->stat, PCH_RX_OK); + + int_stat = pch_can_int_pending(priv); + if (int_stat == CAN_STATUS_INT) + goto INT_STAT; + } + +MSG_OBJ: + if ((int_stat >= 1) && (int_stat <= PCH_RX_OBJ_NUM)) { + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + rcv_pkts = pch_can_rx_normal(ndev, int_stat); + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); + if (rcv_pkts < 0) + return 0; + } else if ((int_stat > PCH_RX_OBJ_NUM) && (int_stat <= PCH_OBJ_NUM)) { + if (priv->msg_obj[int_stat - 1] == MSG_OBJ_TX) { + /* Handle transmission interrupt */ + can_get_echo_skb(ndev, int_stat - PCH_RX_OBJ_NUM - 1); + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + iowrite32(CAN_CMASK_RX_TX_GET | CAN_CMASK_CLRINTPND, + &priv->regs->if2_cmask); + dlc = ioread32(&priv->regs->if2_mcont) & + CAN_IF_MCONT_DLC; + pch_can_check_if_busy(&priv->regs->if2_creq, int_stat); + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); + if (dlc > 8) + dlc = 8; + stats->tx_bytes += dlc; + stats->tx_packets++; + } + } + + int_stat = pch_can_int_pending(priv); + if (int_stat == CAN_STATUS_INT) + goto INT_STAT; + else if (int_stat >= 1 && int_stat <= 32) + goto MSG_OBJ; + + napi_complete(napi); + pch_can_set_int_enables(priv, PCH_CAN_ALL); + + return rcv_pkts; +} + +static int pch_set_bittiming(struct net_device *ndev) +{ + struct pch_can_priv *priv = netdev_priv(ndev); + const struct can_bittiming *bt = &priv->can.bittiming; + u32 canbit; + u32 bepe; + u32 brp; + + /* Setting the CCE bit for accessing the Can Timing register. */ + pch_can_bit_set(&priv->regs->cont, CAN_CTRL_CCE); + + brp = (bt->tq) / (1000000000/PCH_CAN_CLK) - 1; + canbit = brp & MSK_BITT_BRP; + canbit |= (bt->sjw - 1) << BIT_BITT_SJW; + canbit |= (bt->phase_seg1 + bt->prop_seg - 1) << BIT_BITT_TSEG1; + canbit |= (bt->phase_seg2 - 1) << BIT_BITT_TSEG2; + bepe = (brp & MSK_BRPE_BRPE) >> BIT_BRPE_BRPE; + iowrite32(canbit, &priv->regs->bitt); + iowrite32(bepe, &priv->regs->brpe); + pch_can_bit_clear(&priv->regs->cont, CAN_CTRL_CCE); + + return 0; +} + +static void pch_can_start(struct net_device *ndev) +{ + struct pch_can_priv *priv = netdev_priv(ndev); + + if (priv->can.state != CAN_STATE_STOPPED) + pch_can_reset(priv); + + pch_set_bittiming(ndev); + pch_can_set_optmode(priv); + + pch_can_tx_enable_all(priv); + pch_can_rx_enable_all(priv); + + /* Setting the CAN to run mode. */ + pch_can_set_run_mode(priv, PCH_CAN_RUN); + + priv->can.state = CAN_STATE_ERROR_ACTIVE; + + return; +} + +static int pch_can_do_set_mode(struct net_device *ndev, enum can_mode mode) +{ + int ret = 0; + + switch (mode) { + case CAN_MODE_START: + pch_can_start(ndev); + netif_wake_queue(ndev); + break; + default: + ret = -EOPNOTSUPP; + break; + } + + return ret; +} + +static int pch_can_open(struct net_device *ndev) +{ + struct pch_can_priv *priv = netdev_priv(ndev); + int retval; + + retval = pci_enable_msi(priv->dev); + if (retval) { + dev_info(&ndev->dev, "PCH CAN opened without MSI\n"); + priv->use_msi = 0; + } else { + dev_info(&ndev->dev, "PCH CAN opened with MSI\n"); + priv->use_msi = 1; + } + + /* Regsitering the interrupt. */ + retval = request_irq(priv->dev->irq, pch_can_interrupt, IRQF_SHARED, + ndev->name, ndev); + if (retval) { + dev_err(&ndev->dev, "request_irq failed.\n"); + goto req_irq_err; + } + + /* Open common can device */ + retval = open_candev(ndev); + if (retval) { + dev_err(ndev->dev.parent, "open_candev() failed %d\n", retval); + goto err_open_candev; + } + + pch_can_init(priv); + pch_can_start(ndev); + napi_enable(&priv->napi); + netif_start_queue(ndev); + + return 0; + +err_open_candev: + free_irq(priv->dev->irq, ndev); +req_irq_err: + if (priv->use_msi) + pci_disable_msi(priv->dev); + + pch_can_release(priv); + + return retval; +} + +static int pch_close(struct net_device *ndev) +{ + struct pch_can_priv *priv = netdev_priv(ndev); + + netif_stop_queue(ndev); + napi_disable(&priv->napi); + pch_can_release(priv); + free_irq(priv->dev->irq, ndev); + if (priv->use_msi) + pci_disable_msi(priv->dev); + close_candev(ndev); + priv->can.state = CAN_STATE_STOPPED; + return 0; +} + +static int pch_get_msg_obj_sts(struct net_device *ndev, u32 obj_id) +{ + u32 buffer_status = 0; + struct pch_can_priv *priv = netdev_priv(ndev); + + /* Getting the message object status. */ + buffer_status = (u32) pch_can_get_buffer_status(priv); + + return buffer_status & obj_id; +} + + +static netdev_tx_t pch_xmit(struct sk_buff *skb, struct net_device *ndev) +{ + int i, j; + unsigned long flags; + struct pch_can_priv *priv = netdev_priv(ndev); + struct can_frame *cf = (struct can_frame *)skb->data; + int tx_buffer_avail = 0; + + if (can_dropped_invalid_skb(ndev, skb)) + return NETDEV_TX_OK; + + if (priv->tx_obj == (PCH_OBJ_NUM + 1)) { /* Point tail Obj */ + while (pch_get_msg_obj_sts(ndev, (((1 << PCH_TX_OBJ_NUM)-1) << + PCH_RX_OBJ_NUM))) + udelay(500); + + priv->tx_obj = PCH_RX_OBJ_NUM + 1; /* Point head of Tx Obj ID */ + tx_buffer_avail = priv->tx_obj; /* Point Tail of Tx Obj */ + } else { + tx_buffer_avail = priv->tx_obj; + } + priv->tx_obj++; + + /* Attaining the lock. */ + spin_lock_irqsave(&priv->msgif_reg_lock, flags); + + /* Reading the Msg Obj from the Msg RAM to the Interface register. */ + iowrite32(CAN_CMASK_RX_TX_GET, &priv->regs->if2_cmask); + pch_can_check_if_busy(&priv->regs->if2_creq, tx_buffer_avail); + + /* Setting the CMASK register. */ + pch_can_bit_set(&priv->regs->if2_cmask, CAN_CMASK_ALL); + + /* If ID extended is set. */ + pch_can_bit_clear(&priv->regs->if2_id1, 0xffff); + pch_can_bit_clear(&priv->regs->if2_id2, 0x1fff | CAN_ID2_XTD); + if (cf->can_id & CAN_EFF_FLAG) { + pch_can_bit_set(&priv->regs->if2_id1, cf->can_id & 0xffff); + pch_can_bit_set(&priv->regs->if2_id2, + ((cf->can_id >> 16) & 0x1fff) | CAN_ID2_XTD); + } else { + pch_can_bit_set(&priv->regs->if2_id1, 0); + pch_can_bit_set(&priv->regs->if2_id2, + (cf->can_id & CAN_SFF_MASK) << 2); + } + + /* If remote frame has to be transmitted.. */ + if (cf->can_id & CAN_RTR_FLAG) + pch_can_bit_clear(&priv->regs->if2_id2, CAN_ID2_DIR); + + for (i = 0, j = 0; i < cf->can_dlc; j++) { + iowrite32(le32_to_cpu(cf->data[i++]), + (&priv->regs->if2_dataa1) + j*4); + if (i == cf->can_dlc) + break; + iowrite32(le32_to_cpu(cf->data[i++] << 8), + (&priv->regs->if2_dataa1) + j*4); + } + + can_put_echo_skb(skb, ndev, tx_buffer_avail - PCH_RX_OBJ_NUM - 1); + + /* Updating the size of the data. */ + pch_can_bit_clear(&priv->regs->if2_mcont, 0x0f); + pch_can_bit_set(&priv->regs->if2_mcont, cf->can_dlc); + + /* Clearing IntPend, NewDat & TxRqst */ + pch_can_bit_clear(&priv->regs->if2_mcont, + CAN_IF_MCONT_NEWDAT | CAN_IF_MCONT_INTPND | + CAN_IF_MCONT_TXRQXT); + + /* Setting NewDat, TxRqst bits */ + pch_can_bit_set(&priv->regs->if2_mcont, + CAN_IF_MCONT_NEWDAT | CAN_IF_MCONT_TXRQXT); + + pch_can_check_if_busy(&priv->regs->if2_creq, tx_buffer_avail); + + spin_unlock_irqrestore(&priv->msgif_reg_lock, flags); + + return NETDEV_TX_OK; +} + +static const struct net_device_ops pch_can_netdev_ops = { + .ndo_open = pch_can_open, + .ndo_stop = pch_close, + .ndo_start_xmit = pch_xmit, +}; + +static void __devexit pch_can_remove(struct pci_dev *pdev) +{ + struct net_device *ndev = pci_get_drvdata(pdev); + struct pch_can_priv *priv = netdev_priv(ndev); + + unregister_candev(priv->ndev); + free_candev(priv->ndev); + pci_iounmap(pdev, priv->regs); + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + pch_can_reset(priv); +} + +#ifdef CONFIG_PM +static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state) +{ + int i; /* Counter variable. */ + int retval; /* Return value. */ + u32 buf_stat; /* Variable for reading the transmit buffer status. */ + u32 counter = 0xFFFFFF; + + struct net_device *dev = pci_get_drvdata(pdev); + struct pch_can_priv *priv = netdev_priv(dev); + + /* Stop the CAN controller */ + pch_can_set_run_mode(priv, PCH_CAN_STOP); + + /* Indicate that we are aboutto/in suspend */ + priv->can.state = CAN_STATE_SLEEPING; + + /* Waiting for all transmission to complete. */ + while (counter) { + buf_stat = pch_can_get_buffer_status(priv); + if (!buf_stat) + break; + counter--; + udelay(1); + } + if (!counter) + dev_err(&pdev->dev, "%s -> Transmission time out.\n", __func__); + + /* Save interrupt configuration and then disable them */ + pch_can_get_int_enables(priv, &(priv->int_enables)); + pch_can_set_int_enables(priv, PCH_CAN_DISABLE); + + /* Save Tx buffer enable state */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_TX) + pch_can_get_tx_enable(priv, i + 1, + &(priv->tx_enable[i])); + } + + /* Disable all Transmit buffers */ + pch_can_tx_disable_all(priv); + + /* Save Rx buffer enable state */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_RX) { + pch_can_get_rx_enable(priv, i + 1, + &(priv->rx_enable[i])); + pch_can_get_rx_buffer_link(priv, i + 1, + &(priv->rx_link[i])); + } + } + + /* Disable all Receive buffers */ + pch_can_rx_disable_all(priv); + retval = pci_save_state(pdev); + if (retval) { + dev_err(&pdev->dev, "pci_save_state failed.\n"); + } else { + pci_enable_wake(pdev, PCI_D3hot, 0); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + } + + return retval; +} + +static int pch_can_resume(struct pci_dev *pdev) +{ + int i; /* Counter variable. */ + int retval; /* Return variable. */ + struct net_device *dev = pci_get_drvdata(pdev); + struct pch_can_priv *priv = netdev_priv(dev); + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + retval = pci_enable_device(pdev); + if (retval) { + dev_err(&pdev->dev, "pci_enable_device failed.\n"); + return retval; + } + + pci_enable_wake(pdev, PCI_D3hot, 0); + + priv->can.state = CAN_STATE_ERROR_ACTIVE; + + /* Disabling all interrupts. */ + pch_can_set_int_enables(priv, PCH_CAN_DISABLE); + + /* Setting the CAN device in Stop Mode. */ + pch_can_set_run_mode(priv, PCH_CAN_STOP); + + /* Configuring the transmit and receive buffers. */ + pch_can_config_rx_tx_buffers(priv); + + /* Restore the CAN state */ + pch_set_bittiming(dev); + + /* Listen/Active */ + pch_can_set_optmode(priv); + + /* Enabling the transmit buffer. */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_TX) { + pch_can_set_tx_enable(priv, i + 1, + priv->tx_enable[i]); + } + } + + /* Configuring the receive buffer and enabling them. */ + for (i = 0; i < PCH_OBJ_NUM; i++) { + if (priv->msg_obj[i] == MSG_OBJ_RX) { + /* Restore buffer link */ + pch_can_set_rx_buffer_link(priv, i + 1, + priv->rx_link[i]); + + /* Restore buffer enables */ + pch_can_set_rx_enable(priv, i + 1, priv->rx_enable[i]); + } + } + + /* Enable CAN Interrupts */ + pch_can_set_int_custom(priv); + + /* Restore Run Mode */ + pch_can_set_run_mode(priv, PCH_CAN_RUN); + + return retval; +} +#else +#define pch_can_suspend NULL +#define pch_can_resume NULL +#endif + +static int pch_can_get_berr_counter(const struct net_device *dev, + struct can_berr_counter *bec) +{ + struct pch_can_priv *priv = netdev_priv(dev); + + bec->txerr = ioread32(&priv->regs->errc) & CAN_TEC; + bec->rxerr = (ioread32(&priv->regs->errc) & CAN_REC) >> 8; + + return 0; +} + +static int __devinit pch_can_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct net_device *ndev; + struct pch_can_priv *priv; + int rc; + int index; + void __iomem *addr; + + rc = pci_enable_device(pdev); + if (rc) { + dev_err(&pdev->dev, "Failed pci_enable_device %d\n", rc); + goto probe_exit_endev; + } + + rc = pci_request_regions(pdev, KBUILD_MODNAME); + if (rc) { + dev_err(&pdev->dev, "Failed pci_request_regions %d\n", rc); + goto probe_exit_pcireq; + } + + addr = pci_iomap(pdev, 1, 0); + if (!addr) { + rc = -EIO; + dev_err(&pdev->dev, "Failed pci_iomap\n"); + goto probe_exit_ipmap; + } + + ndev = alloc_candev(sizeof(struct pch_can_priv), PCH_TX_OBJ_NUM); + if (!ndev) { + rc = -ENOMEM; + dev_err(&pdev->dev, "Failed alloc_candev\n"); + goto probe_exit_alloc_candev; + } + + priv = netdev_priv(ndev); + priv->ndev = ndev; + priv->regs = addr; + priv->dev = pdev; + priv->can.bittiming_const = &pch_can_bittiming_const; + priv->can.do_set_mode = pch_can_do_set_mode; + priv->can.do_get_berr_counter = pch_can_get_berr_counter; + priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY | + CAN_CTRLMODE_LOOPBACK; + priv->tx_obj = PCH_RX_OBJ_NUM + 1; /* Point head of Tx Obj */ + + ndev->irq = pdev->irq; + ndev->flags |= IFF_ECHO; + + pci_set_drvdata(pdev, ndev); + SET_NETDEV_DEV(ndev, &pdev->dev); + ndev->netdev_ops = &pch_can_netdev_ops; + + priv->can.clock.freq = PCH_CAN_CLK; /* Hz */ + for (index = 0; index < PCH_RX_OBJ_NUM;) + priv->msg_obj[index++] = MSG_OBJ_RX; + + for (index = index; index < PCH_OBJ_NUM;) + priv->msg_obj[index++] = MSG_OBJ_TX; + + netif_napi_add(ndev, &priv->napi, pch_can_rx_poll, PCH_RX_OBJ_NUM); + + rc = register_candev(ndev); + if (rc) { + dev_err(&pdev->dev, "Failed register_candev %d\n", rc); + goto probe_exit_reg_candev; + } + + return 0; + +probe_exit_reg_candev: + free_candev(ndev); +probe_exit_alloc_candev: + pci_iounmap(pdev, addr); +probe_exit_ipmap: + pci_release_regions(pdev); +probe_exit_pcireq: + pci_disable_device(pdev); +probe_exit_endev: + return rc; +} + +static struct pci_driver pch_can_pcidev = { + .name = "pch_can", + .id_table = pch_pci_tbl, + .probe = pch_can_probe, + .remove = __devexit_p(pch_can_remove), + .suspend = pch_can_suspend, + .resume = pch_can_resume, +}; + +static int __init pch_can_pci_init(void) +{ + return pci_register_driver(&pch_can_pcidev); +} +module_init(pch_can_pci_init); + +static void __exit pch_can_pci_exit(void) +{ + pci_unregister_driver(&pch_can_pcidev); +} +module_exit(pch_can_pci_exit); + +MODULE_DESCRIPTION("Controller Area Network Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION("0.94"); -- cgit v1.2.3-70-g09d2 From dbe91325c2d6ad34c1ce4f2aeae4bbd11b7a3fff Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:13 +0000 Subject: can: at91_can: use correct bit to enable CAN_CTRLMODE_3_SAMPLES Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 2d8bd86bc5e..b2a4599eb1d 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -2,7 +2,7 @@ * at91_can.c - CAN network driver for AT91 SoC CAN controller * * (C) 2007 by Hans J. Koch - * (C) 2008, 2009 by Marc Kleine-Budde + * (C) 2008, 2009, 2010 by Marc Kleine-Budde * * This software may be distributed under the terms of the GNU General * Public License ("GPL") version 2 as distributed in the 'COPYING' @@ -257,8 +257,8 @@ static int at91_set_bittiming(struct net_device *dev) const struct can_bittiming *bt = &priv->can.bittiming; u32 reg_br; - reg_br = ((priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) << 24) | - ((bt->brp - 1) << 16) | ((bt->sjw - 1) << 12) | + reg_br = ((priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) ? 1 << 24 : 0) | + ((bt->brp - 1) << 16) | ((bt->sjw - 1) << 12) | ((bt->prop_seg - 1) << 8) | ((bt->phase_seg1 - 1) << 4) | ((bt->phase_seg2 - 1) << 0); -- cgit v1.2.3-70-g09d2 From 8a0e0a49b0a917c8c8dce6f7121ec73a5c8e3932 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:14 +0000 Subject: can: at91_can: fix reception of extended frames The AT91_MID_MIDE bit must be set in order to receive extended frames. The reception of an extended frame sets this bit, while reception of standard frames resets it. This results in some lost extended frames in an extended ID only environment. But leads to unpredictable lost extended ID frames in a mixed environment. The problem is fixed by setting the AT91_MID_MIDE after reception of a CAN frame. Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index b2a4599eb1d..3b66c673683 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -243,6 +243,12 @@ static void at91_setup_mailboxes(struct net_device *dev) set_mb_mode(priv, i, AT91_MB_MODE_RX); set_mb_mode(priv, AT91_MB_RX_LAST, AT91_MB_MODE_RX_OVRWR); + /* reset acceptance mask and id register */ + for (i = AT91_MB_RX_FIRST; i <= AT91_MB_RX_LAST; i++) { + at91_write(priv, AT91_MAM(i), 0x0 ); + at91_write(priv, AT91_MID(i), AT91_MID_MIDE); + } + /* The last 4 mailboxes are used for transmitting. */ for (i = AT91_MB_TX_FIRST; i <= AT91_MB_TX_LAST; i++) set_mb_mode_prio(priv, i, AT91_MB_MODE_TX, 0); @@ -480,6 +486,9 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb, *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb)); *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb)); + /* allow RX of extended frames */ + at91_write(priv, AT91_MID(mb), AT91_MID_MIDE); + if (unlikely(mb == AT91_MB_RX_LAST && reg_msr & AT91_MSR_MMI)) at91_rx_overflow_err(dev); } -- cgit v1.2.3-70-g09d2 From 759a6c768dcdbbb4d3f1fb965b674c15773e09ca Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:15 +0000 Subject: can: at91_can: fix use after free of priv The priv is part of the memory allocated by alloc_candev(). This patch moved the free it after last usage of priv. While there convert all free_netdev() to free_candev() (which is currently just a wrapper around free_netdev()) to be symetrically with the allocation via alloc_candev(). Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 3b66c673683..2c17e7437c4 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -1101,7 +1101,7 @@ static int __init at91_can_probe(struct platform_device *pdev) return 0; exit_free: - free_netdev(dev); + free_candev(dev); exit_iounmap: iounmap(addr); exit_release: @@ -1122,8 +1122,6 @@ static int __devexit at91_can_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); - free_netdev(dev); - iounmap(priv->reg_base); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -1131,6 +1129,8 @@ static int __devexit at91_can_remove(struct platform_device *pdev) clk_put(priv->clk); + free_candev(dev); + return 0; } -- cgit v1.2.3-70-g09d2 From b61f674051e58b394454602d492d5e3e3471facc Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:16 +0000 Subject: can: at91_can: fix compiler warning in at91_irq_err_state This patch fixes the following compiler warning: drivers/net/can/at91_can.c: In function 'at91_irq_err_state': drivers/net/can/at91_can.c:779: warning: 'reg_ier' may be used uninitialized in this function drivers/net/can/at91_can.c:779: warning: 'reg_idr' may be used uninitialized in this function Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 2c17e7437c4..1954ab003db 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -764,7 +764,7 @@ static void at91_irq_err_state(struct net_device *dev, struct can_frame *cf, enum can_state new_state) { struct at91_priv *priv = netdev_priv(dev); - u32 reg_idr, reg_ier, reg_ecr; + u32 reg_idr = 0, reg_ier = 0, reg_ecr; u8 tec, rec; reg_ecr = at91_read(priv, AT91_ECR); -- cgit v1.2.3-70-g09d2 From a9d992ecb36f8ed00130eaf41a406fda03433d23 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:17 +0000 Subject: can: at91_can: fix section mismatch warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ...by adding the correct annotation "__devinit" to the driver's probe function. Signed-off-by: Marc Kleine-Budde Acked-by: Uwe Kleine-König Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 1954ab003db..61878135a9d 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -1027,7 +1027,7 @@ static const struct net_device_ops at91_netdev_ops = { .ndo_start_xmit = at91_start_xmit, }; -static int __init at91_can_probe(struct platform_device *pdev) +static int __devinit at91_can_probe(struct platform_device *pdev) { struct net_device *dev; struct at91_priv *priv; -- cgit v1.2.3-70-g09d2 From 33a6f298c28a65fa643bc70222ebffe75077f197 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:18 +0000 Subject: can: at91_can: implement and use at91_get_berr_counter Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 61878135a9d..4fa0aa0e3f9 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -275,6 +275,18 @@ static int at91_set_bittiming(struct net_device *dev) return 0; } +static int at91_get_berr_counter(const struct net_device *dev, + struct can_berr_counter *bec) +{ + const struct at91_priv *priv = netdev_priv(dev); + u32 reg_ecr = at91_read(priv, AT91_ECR); + + bec->rxerr = reg_ecr & 0xff; + bec->txerr = reg_ecr >> 16; + + return 0; +} + static void at91_chip_start(struct net_device *dev) { struct at91_priv *priv = netdev_priv(dev); @@ -764,12 +776,10 @@ static void at91_irq_err_state(struct net_device *dev, struct can_frame *cf, enum can_state new_state) { struct at91_priv *priv = netdev_priv(dev); - u32 reg_idr = 0, reg_ier = 0, reg_ecr; - u8 tec, rec; + u32 reg_idr = 0, reg_ier = 0; + struct can_berr_counter bec; - reg_ecr = at91_read(priv, AT91_ECR); - rec = reg_ecr & 0xff; - tec = reg_ecr >> 16; + at91_get_berr_counter(dev, &bec); switch (priv->can.state) { case CAN_STATE_ERROR_ACTIVE: @@ -784,7 +794,7 @@ static void at91_irq_err_state(struct net_device *dev, priv->can.can_stats.error_warning++; cf->can_id |= CAN_ERR_CRTL; - cf->data[1] = (tec > rec) ? + cf->data[1] = (bec.txerr > bec.rxerr) ? CAN_ERR_CRTL_TX_WARNING : CAN_ERR_CRTL_RX_WARNING; } @@ -800,7 +810,7 @@ static void at91_irq_err_state(struct net_device *dev, priv->can.can_stats.error_passive++; cf->can_id |= CAN_ERR_CRTL; - cf->data[1] = (tec > rec) ? + cf->data[1] = (bec.txerr > bec.rxerr) ? CAN_ERR_CRTL_TX_PASSIVE : CAN_ERR_CRTL_RX_PASSIVE; } @@ -1078,6 +1088,7 @@ static int __devinit at91_can_probe(struct platform_device *pdev) priv->can.bittiming_const = &at91_bittiming_const; priv->can.do_set_bittiming = at91_set_bittiming; priv->can.do_set_mode = at91_set_mode; + priv->can.do_get_berr_counter = at91_get_berr_counter; priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES; priv->reg_base = addr; priv->dev = dev; -- cgit v1.2.3-70-g09d2 From b156fd0483c8f18b3cc544d9c400fe454458e16a Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:19 +0000 Subject: can: at91_can: set bittiming in chip_start Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 4fa0aa0e3f9..ace9c087e75 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -299,6 +299,7 @@ static void at91_chip_start(struct net_device *dev) reg_mr = at91_read(priv, AT91_MR); at91_write(priv, AT91_MR, reg_mr & ~AT91_MR_CANEN); + at91_set_bittiming(dev); at91_setup_mailboxes(dev); at91_transceiver_switch(priv, 1); @@ -1086,7 +1087,6 @@ static int __devinit at91_can_probe(struct platform_device *pdev) priv = netdev_priv(dev); priv->can.clock.freq = clk_get_rate(clk); priv->can.bittiming_const = &at91_bittiming_const; - priv->can.do_set_bittiming = at91_set_bittiming; priv->can.do_set_mode = at91_set_mode; priv->can.do_get_berr_counter = at91_get_berr_counter; priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES; -- cgit v1.2.3-70-g09d2 From 7672fe7373c7b871220093e568610ac95e96de35 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:20 +0000 Subject: can: at91_can: convert readl, writel their __raw pendants Signed-off-by: Marc Kleine-Budde Cc: Russell King Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index ace9c087e75..12bd6157efd 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -199,13 +199,13 @@ static inline int get_tx_echo_mb(const struct at91_priv *priv) static inline u32 at91_read(const struct at91_priv *priv, enum at91_reg reg) { - return readl(priv->reg_base + reg); + return __raw_readl(priv->reg_base + reg); } static inline void at91_write(const struct at91_priv *priv, enum at91_reg reg, u32 value) { - writel(value, priv->reg_base + reg); + __raw_writel(value, priv->reg_base + reg); } static inline void set_mb_mode_prio(const struct at91_priv *priv, -- cgit v1.2.3-70-g09d2 From 882055c8387e85cb380ab152b96ff69b570d8989 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:21 +0000 Subject: can: at91_can: convert dev_ printing to netdev_ While there, remove "printk()" on driver loading. Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 35 ++++++++++++++++------------------- 1 file changed, 16 insertions(+), 19 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 12bd6157efd..7149a8645ee 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -268,7 +268,7 @@ static int at91_set_bittiming(struct net_device *dev) ((bt->prop_seg - 1) << 8) | ((bt->phase_seg1 - 1) << 4) | ((bt->phase_seg2 - 1) << 0); - dev_info(dev->dev.parent, "writing AT91_BR: 0x%08x\n", reg_br); + netdev_info(dev, "writing AT91_BR: 0x%08x\n", reg_br); at91_write(priv, AT91_BR, reg_br); @@ -369,8 +369,7 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) if (unlikely(!(at91_read(priv, AT91_MSR(mb)) & AT91_MSR_MRDY))) { netif_stop_queue(dev); - dev_err(dev->dev.parent, - "BUG! TX buffer full when queue awake!\n"); + netdev_err(dev, "BUG! TX buffer full when queue awake!\n"); return NETDEV_TX_BUSY; } @@ -454,7 +453,7 @@ static void at91_rx_overflow_err(struct net_device *dev) struct sk_buff *skb; struct can_frame *cf; - dev_dbg(dev->dev.parent, "RX buffer overflow\n"); + netdev_dbg(dev, "RX buffer overflow\n"); stats->rx_over_errors++; stats->rx_errors++; @@ -587,8 +586,8 @@ static int at91_poll_rx(struct net_device *dev, int quota) if (priv->rx_next > AT91_MB_RX_LOW_LAST && reg_sr & AT91_MB_RX_LOW_MASK) - dev_info(dev->dev.parent, - "order of incoming frames cannot be guaranteed\n"); + netdev_info(dev, + "order of incoming frames cannot be guaranteed\n"); again: for (mb = find_next_bit(addr, AT91_MB_RX_NUM, priv->rx_next); @@ -626,7 +625,7 @@ static void at91_poll_err_frame(struct net_device *dev, /* CRC error */ if (reg_sr & AT91_IRQ_CERR) { - dev_dbg(dev->dev.parent, "CERR irq\n"); + netdev_dbg(dev, "CERR irq\n"); dev->stats.rx_errors++; priv->can.can_stats.bus_error++; cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; @@ -634,7 +633,7 @@ static void at91_poll_err_frame(struct net_device *dev, /* Stuffing Error */ if (reg_sr & AT91_IRQ_SERR) { - dev_dbg(dev->dev.parent, "SERR irq\n"); + netdev_dbg(dev, "SERR irq\n"); dev->stats.rx_errors++; priv->can.can_stats.bus_error++; cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; @@ -643,14 +642,14 @@ static void at91_poll_err_frame(struct net_device *dev, /* Acknowledgement Error */ if (reg_sr & AT91_IRQ_AERR) { - dev_dbg(dev->dev.parent, "AERR irq\n"); + netdev_dbg(dev, "AERR irq\n"); dev->stats.tx_errors++; cf->can_id |= CAN_ERR_ACK; } /* Form error */ if (reg_sr & AT91_IRQ_FERR) { - dev_dbg(dev->dev.parent, "FERR irq\n"); + netdev_dbg(dev, "FERR irq\n"); dev->stats.rx_errors++; priv->can.can_stats.bus_error++; cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; @@ -659,7 +658,7 @@ static void at91_poll_err_frame(struct net_device *dev, /* Bit Error */ if (reg_sr & AT91_IRQ_BERR) { - dev_dbg(dev->dev.parent, "BERR irq\n"); + netdev_dbg(dev, "BERR irq\n"); dev->stats.tx_errors++; priv->can.can_stats.bus_error++; cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; @@ -791,7 +790,7 @@ static void at91_irq_err_state(struct net_device *dev, */ if (new_state >= CAN_STATE_ERROR_WARNING && new_state <= CAN_STATE_BUS_OFF) { - dev_dbg(dev->dev.parent, "Error Warning IRQ\n"); + netdev_dbg(dev, "Error Warning IRQ\n"); priv->can.can_stats.error_warning++; cf->can_id |= CAN_ERR_CRTL; @@ -807,7 +806,7 @@ static void at91_irq_err_state(struct net_device *dev, */ if (new_state >= CAN_STATE_ERROR_PASSIVE && new_state <= CAN_STATE_BUS_OFF) { - dev_dbg(dev->dev.parent, "Error Passive IRQ\n"); + netdev_dbg(dev, "Error Passive IRQ\n"); priv->can.can_stats.error_passive++; cf->can_id |= CAN_ERR_CRTL; @@ -824,7 +823,7 @@ static void at91_irq_err_state(struct net_device *dev, if (new_state <= CAN_STATE_ERROR_PASSIVE) { cf->can_id |= CAN_ERR_RESTARTED; - dev_dbg(dev->dev.parent, "restarted\n"); + netdev_dbg(dev, "restarted\n"); priv->can.can_stats.restarts++; netif_carrier_on(dev); @@ -845,7 +844,7 @@ static void at91_irq_err_state(struct net_device *dev, * circumstances. so just enable AT91_IRQ_ERRP, thus * the "fallthrough" */ - dev_dbg(dev->dev.parent, "Error Active\n"); + netdev_dbg(dev, "Error Active\n"); cf->can_id |= CAN_ERR_PROT; cf->data[2] = CAN_ERR_PROT_ACTIVE; case CAN_STATE_ERROR_WARNING: /* fallthrough */ @@ -863,7 +862,7 @@ static void at91_irq_err_state(struct net_device *dev, cf->can_id |= CAN_ERR_BUSOFF; - dev_dbg(dev->dev.parent, "bus-off\n"); + netdev_dbg(dev, "bus-off\n"); netif_carrier_off(dev); priv->can.can_stats.bus_off++; @@ -901,7 +900,7 @@ static void at91_irq_err(struct net_device *dev) else if (likely(reg_sr & AT91_IRQ_ERRA)) new_state = CAN_STATE_ERROR_ACTIVE; else { - dev_err(dev->dev.parent, "BUG! hardware in undefined state\n"); + netdev_err(dev, "BUG! hardware in undefined state\n"); return; } @@ -1156,14 +1155,12 @@ static struct platform_driver at91_can_driver = { static int __init at91_can_module_init(void) { - printk(KERN_INFO "%s netdevice driver\n", DRV_NAME); return platform_driver_register(&at91_can_driver); } static void __exit at91_can_module_exit(void) { platform_driver_unregister(&at91_can_driver); - printk(KERN_INFO "%s: driver removed\n", DRV_NAME); } module_init(at91_can_module_init); -- cgit v1.2.3-70-g09d2 From 00389b0820c44cceec3f6981cb4d217982ec73b2 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 01:01:22 +0000 Subject: can: at91_can: add KBUILD_MODNAME to bittiming constant While there replace all usage of self defined DRV_NAME by KBUILD_MODNAME. Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/at91_can.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 7149a8645ee..cee98fa668b 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -40,7 +40,6 @@ #include -#define DRV_NAME "at91_can" #define AT91_NAPI_WEIGHT 12 /* @@ -172,6 +171,7 @@ struct at91_priv { }; static struct can_bittiming_const at91_bittiming_const = { + .name = KBUILD_MODNAME, .tseg1_min = 4, .tseg1_max = 16, .tseg2_min = 2, @@ -1148,7 +1148,7 @@ static struct platform_driver at91_can_driver = { .probe = at91_can_probe, .remove = __devexit_p(at91_can_remove), .driver = { - .name = DRV_NAME, + .name = KBUILD_MODNAME, .owner = THIS_MODULE, }, }; @@ -1168,4 +1168,4 @@ module_exit(at91_can_module_exit); MODULE_AUTHOR("Marc Kleine-Budde "); MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION(DRV_NAME " CAN netdevice driver"); +MODULE_DESCRIPTION(KBUILD_MODNAME " CAN netdevice driver"); -- cgit v1.2.3-70-g09d2 From 9740d7860429a561f4745da8c179d84290f3c9a3 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 06:59:20 +0000 Subject: mlx4: make functions local and remove dead code. Make the following function static: mlx4_UNMAP_ICM Remove the following unused function: mlx4_MAP_ICM_page Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/mlx4/icm.c | 28 +--------------------------- drivers/net/mlx4/icm.h | 2 -- 2 files changed, 1 insertion(+), 29 deletions(-) diff --git a/drivers/net/mlx4/icm.c b/drivers/net/mlx4/icm.c index b07e4dee80a..02393fdf44c 100644 --- a/drivers/net/mlx4/icm.c +++ b/drivers/net/mlx4/icm.c @@ -210,38 +210,12 @@ static int mlx4_MAP_ICM(struct mlx4_dev *dev, struct mlx4_icm *icm, u64 virt) return mlx4_map_cmd(dev, MLX4_CMD_MAP_ICM, icm, virt); } -int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count) +static int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count) { return mlx4_cmd(dev, virt, page_count, 0, MLX4_CMD_UNMAP_ICM, MLX4_CMD_TIME_CLASS_B); } -int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt) -{ - struct mlx4_cmd_mailbox *mailbox; - __be64 *inbox; - int err; - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) - return PTR_ERR(mailbox); - inbox = mailbox->buf; - - inbox[0] = cpu_to_be64(virt); - inbox[1] = cpu_to_be64(dma_addr); - - err = mlx4_cmd(dev, mailbox->dma, 1, 0, MLX4_CMD_MAP_ICM, - MLX4_CMD_TIME_CLASS_B); - - mlx4_free_cmd_mailbox(dev, mailbox); - - if (!err) - mlx4_dbg(dev, "Mapped page at %llx to %llx for ICM.\n", - (unsigned long long) dma_addr, (unsigned long long) virt); - - return err; -} - int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm) { return mlx4_map_cmd(dev, MLX4_CMD_MAP_ICM_AUX, icm, -1); diff --git a/drivers/net/mlx4/icm.h b/drivers/net/mlx4/icm.h index ab56a2f89b6..b10c07a1dc1 100644 --- a/drivers/net/mlx4/icm.h +++ b/drivers/net/mlx4/icm.h @@ -128,8 +128,6 @@ static inline unsigned long mlx4_icm_size(struct mlx4_icm_iter *iter) return sg_dma_len(&iter->chunk->mem[iter->page_idx]); } -int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count); -int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt); int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm); int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev); -- cgit v1.2.3-70-g09d2 From fc130840d75d42c5a360fd1d8b72489eec09cad3 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:46 +0000 Subject: l2tp: make local function static Also moved the refcound inlines from l2tp_core.h to l2tp_core.c since only used in that one file. Signed-off-by: Stephen Hemminger Acked-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 50 ++++++++++++++++++++++++++++++++++++++++---------- net/l2tp/l2tp_core.h | 33 --------------------------------- net/l2tp/l2tp_ip.c | 2 +- 3 files changed, 41 insertions(+), 44 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 1712af1c7b3..5fb4803baf2 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -111,6 +111,10 @@ struct l2tp_net { spinlock_t l2tp_session_hlist_lock; }; +static void l2tp_session_set_header_len(struct l2tp_session *session, int version); +static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel); +static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel); + static inline struct l2tp_net *l2tp_pernet(struct net *net) { BUG_ON(!net); @@ -118,6 +122,34 @@ static inline struct l2tp_net *l2tp_pernet(struct net *net) return net_generic(net, l2tp_net_id); } + +/* Tunnel reference counts. Incremented per session that is added to + * the tunnel. + */ +static inline void l2tp_tunnel_inc_refcount_1(struct l2tp_tunnel *tunnel) +{ + atomic_inc(&tunnel->ref_count); +} + +static inline void l2tp_tunnel_dec_refcount_1(struct l2tp_tunnel *tunnel) +{ + if (atomic_dec_and_test(&tunnel->ref_count)) + l2tp_tunnel_free(tunnel); +} +#ifdef L2TP_REFCNT_DEBUG +#define l2tp_tunnel_inc_refcount(_t) do { \ + printk(KERN_DEBUG "l2tp_tunnel_inc_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \ + l2tp_tunnel_inc_refcount_1(_t); \ + } while (0) +#define l2tp_tunnel_dec_refcount(_t) do { \ + printk(KERN_DEBUG "l2tp_tunnel_dec_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \ + l2tp_tunnel_dec_refcount_1(_t); \ + } while (0) +#else +#define l2tp_tunnel_inc_refcount(t) l2tp_tunnel_inc_refcount_1(t) +#define l2tp_tunnel_dec_refcount(t) l2tp_tunnel_dec_refcount_1(t) +#endif + /* Session hash global list for L2TPv3. * The session_id SHOULD be random according to RFC3931, but several * L2TP implementations use incrementing session_ids. So we do a real @@ -699,8 +731,8 @@ EXPORT_SYMBOL(l2tp_recv_common); * Returns 1 if the packet was not a good data packet and could not be * forwarded. All such packets are passed up to userspace to deal with. */ -int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb, - int (*payload_hook)(struct sk_buff *skb)) +static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb, + int (*payload_hook)(struct sk_buff *skb)) { struct l2tp_session *session = NULL; unsigned char *ptr, *optr; @@ -922,7 +954,8 @@ static int l2tp_build_l2tpv3_header(struct l2tp_session *session, void *buf) return bufp - optr; } -int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, size_t data_len) +static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, + size_t data_len) { struct l2tp_tunnel *tunnel = session->tunnel; unsigned int len = skb->len; @@ -1089,7 +1122,7 @@ EXPORT_SYMBOL_GPL(l2tp_xmit_skb); * The tunnel context is deleted only when all session sockets have been * closed. */ -void l2tp_tunnel_destruct(struct sock *sk) +static void l2tp_tunnel_destruct(struct sock *sk) { struct l2tp_tunnel *tunnel; @@ -1128,11 +1161,10 @@ void l2tp_tunnel_destruct(struct sock *sk) end: return; } -EXPORT_SYMBOL(l2tp_tunnel_destruct); /* When the tunnel is closed, all the attached sessions need to go too. */ -void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel) +static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel) { int hash; struct hlist_node *walk; @@ -1198,7 +1230,7 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_closeall); /* Really kill the tunnel. * Come here only when all sessions have been cleared from the tunnel. */ -void l2tp_tunnel_free(struct l2tp_tunnel *tunnel) +static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel) { struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net); @@ -1217,7 +1249,6 @@ void l2tp_tunnel_free(struct l2tp_tunnel *tunnel) atomic_dec(&l2tp_tunnel_count); kfree(tunnel); } -EXPORT_SYMBOL_GPL(l2tp_tunnel_free); /* Create a socket for the tunnel, if one isn't set up by * userspace. This is used for static tunnels where there is no @@ -1512,7 +1543,7 @@ EXPORT_SYMBOL_GPL(l2tp_session_delete); /* We come here whenever a session's send_seq, cookie_len or * l2specific_len parameters are set. */ -void l2tp_session_set_header_len(struct l2tp_session *session, int version) +static void l2tp_session_set_header_len(struct l2tp_session *session, int version) { if (version == L2TP_HDR_VER_2) { session->hdr_len = 6; @@ -1525,7 +1556,6 @@ void l2tp_session_set_header_len(struct l2tp_session *session, int version) } } -EXPORT_SYMBOL_GPL(l2tp_session_set_header_len); struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg) { diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index f0f318edd3f..a16a48e79fa 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -231,48 +231,15 @@ extern int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_i extern int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel); extern struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg); extern int l2tp_session_delete(struct l2tp_session *session); -extern void l2tp_tunnel_free(struct l2tp_tunnel *tunnel); extern void l2tp_session_free(struct l2tp_session *session); extern void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, unsigned char *ptr, unsigned char *optr, u16 hdrflags, int length, int (*payload_hook)(struct sk_buff *skb)); -extern int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb, int (*payload_hook)(struct sk_buff *skb)); extern int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb); -extern int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, size_t data_len); extern int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len); -extern void l2tp_tunnel_destruct(struct sock *sk); -extern void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel); -extern void l2tp_session_set_header_len(struct l2tp_session *session, int version); extern int l2tp_nl_register_ops(enum l2tp_pwtype pw_type, const struct l2tp_nl_cmd_ops *ops); extern void l2tp_nl_unregister_ops(enum l2tp_pwtype pw_type); -/* Tunnel reference counts. Incremented per session that is added to - * the tunnel. - */ -static inline void l2tp_tunnel_inc_refcount_1(struct l2tp_tunnel *tunnel) -{ - atomic_inc(&tunnel->ref_count); -} - -static inline void l2tp_tunnel_dec_refcount_1(struct l2tp_tunnel *tunnel) -{ - if (atomic_dec_and_test(&tunnel->ref_count)) - l2tp_tunnel_free(tunnel); -} -#ifdef L2TP_REFCNT_DEBUG -#define l2tp_tunnel_inc_refcount(_t) do { \ - printk(KERN_DEBUG "l2tp_tunnel_inc_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \ - l2tp_tunnel_inc_refcount_1(_t); \ - } while (0) -#define l2tp_tunnel_dec_refcount(_t) do { \ - printk(KERN_DEBUG "l2tp_tunnel_dec_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \ - l2tp_tunnel_dec_refcount_1(_t); \ - } while (0) -#else -#define l2tp_tunnel_inc_refcount(t) l2tp_tunnel_inc_refcount_1(t) -#define l2tp_tunnel_dec_refcount(t) l2tp_tunnel_dec_refcount_1(t) -#endif - /* Session reference counts. Incremented when code obtains a reference * to a session. */ diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index 1c770c0644d..0bf6a59545a 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -576,7 +576,7 @@ out: return copied; } -struct proto l2tp_ip_prot = { +static struct proto l2tp_ip_prot = { .name = "L2TP/IP", .owner = THIS_MODULE, .init = l2tp_ip_open, -- cgit v1.2.3-70-g09d2 From 3f3a5fdc55e5c969aa26a5afc3bb2be33cb41fe4 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:47 +0000 Subject: benet: remove dead code The following code and data are defined but never used in current driver. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/benet/be_cmds.c | 36 ------------------------------------ drivers/net/benet/be_cmds.h | 2 -- drivers/net/benet/be_main.c | 3 --- 3 files changed, 41 deletions(-) diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c index 1e7f305ed00..36eca1ce75d 100644 --- a/drivers/net/benet/be_cmds.c +++ b/drivers/net/benet/be_cmds.c @@ -1471,42 +1471,6 @@ err: return status; } -/* Uses sync mcc */ -int be_cmd_read_port_type(struct be_adapter *adapter, u32 port, - u8 *connector) -{ - struct be_mcc_wrb *wrb; - struct be_cmd_req_port_type *req; - int status; - - spin_lock_bh(&adapter->mcc_lock); - - wrb = wrb_from_mccq(adapter); - if (!wrb) { - status = -EBUSY; - goto err; - } - req = embedded_payload(wrb); - - be_wrb_hdr_prepare(wrb, sizeof(struct be_cmd_resp_port_type), true, 0, - OPCODE_COMMON_READ_TRANSRECV_DATA); - - be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, - OPCODE_COMMON_READ_TRANSRECV_DATA, sizeof(*req)); - - req->port = cpu_to_le32(port); - req->page_num = cpu_to_le32(TR_PAGE_A0); - status = be_mcc_notify_wait(adapter); - if (!status) { - struct be_cmd_resp_port_type *resp = embedded_payload(wrb); - *connector = resp->data.connector; - } - -err: - spin_unlock_bh(&adapter->mcc_lock); - return status; -} - int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd, u32 flash_type, u32 flash_opcode, u32 buf_size) { diff --git a/drivers/net/benet/be_cmds.h b/drivers/net/benet/be_cmds.h index c7f6cdfe1c7..8469ff061f3 100644 --- a/drivers/net/benet/be_cmds.h +++ b/drivers/net/benet/be_cmds.h @@ -1022,8 +1022,6 @@ extern int be_cmd_set_beacon_state(struct be_adapter *adapter, u8 port_num, u8 beacon, u8 status, u8 state); extern int be_cmd_get_beacon_state(struct be_adapter *adapter, u8 port_num, u32 *state); -extern int be_cmd_read_port_type(struct be_adapter *adapter, u32 port, - u8 *connector); extern int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd, u32 flash_oper, u32 flash_opcode, u32 buf_size); diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 45b1f663528..8c3bd63b567 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -2299,9 +2299,6 @@ static int be_clear(struct be_adapter *adapter) #define FW_FILE_HDR_SIGN "ServerEngines Corp. " -char flash_cookie[2][16] = {"*** SE FLAS", - "H DIRECTORY *** "}; - static bool be_flash_redboot(struct be_adapter *adapter, const u8 *p, u32 img_start, int image_size, int hdr_size) -- cgit v1.2.3-70-g09d2 From 49b052215b3319b69de8e2df412d06eae41088b4 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:48 +0000 Subject: benet: make be_poll_rx local Only used in one file. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/benet/be_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 8c3bd63b567..12486260c92 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -1674,7 +1674,7 @@ static inline bool do_gro(struct be_adapter *adapter, struct be_rx_obj *rxo, return (tcp_frame && !err) ? true : false; } -int be_poll_rx(struct napi_struct *napi, int budget) +static int be_poll_rx(struct napi_struct *napi, int budget) { struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi); struct be_rx_obj *rxo = container_of(rx_eq, struct be_rx_obj, rx_eq); -- cgit v1.2.3-70-g09d2 From 0fb1e54ed17767521c18908d871f780f461ea1a6 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:49 +0000 Subject: atl1c: make functions static The up/down are only used in this file. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/atl1c/atl1c.h | 2 -- drivers/net/atl1c/atl1c_main.c | 6 ++++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/atl1c/atl1c.h b/drivers/net/atl1c/atl1c.h index ef4115b897b..9ab58097fa2 100644 --- a/drivers/net/atl1c/atl1c.h +++ b/drivers/net/atl1c/atl1c.h @@ -631,8 +631,6 @@ struct atl1c_adapter { extern char atl1c_driver_name[]; extern char atl1c_driver_version[]; -extern int atl1c_up(struct atl1c_adapter *adapter); -extern void atl1c_down(struct atl1c_adapter *adapter); extern void atl1c_reinit_locked(struct atl1c_adapter *adapter); extern s32 atl1c_reset_hw(struct atl1c_hw *hw); extern void atl1c_set_ethtool_ops(struct net_device *netdev); diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c index 99ffcf667d1..09b099bfab2 100644 --- a/drivers/net/atl1c/atl1c_main.c +++ b/drivers/net/atl1c/atl1c_main.c @@ -66,6 +66,8 @@ static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup); static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter); static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, int *work_done, int work_to_do); +static int atl1c_up(struct atl1c_adapter *adapter); +static void atl1c_down(struct atl1c_adapter *adapter); static const u16 atl1c_pay_load_size[] = { 128, 256, 512, 1024, 2048, 4096, @@ -2309,7 +2311,7 @@ static int atl1c_request_irq(struct atl1c_adapter *adapter) return err; } -int atl1c_up(struct atl1c_adapter *adapter) +static int atl1c_up(struct atl1c_adapter *adapter) { struct net_device *netdev = adapter->netdev; int num; @@ -2351,7 +2353,7 @@ err_alloc_rx: return err; } -void atl1c_down(struct atl1c_adapter *adapter) +static void atl1c_down(struct atl1c_adapter *adapter) { struct net_device *netdev = adapter->netdev; -- cgit v1.2.3-70-g09d2 From ff2d8d6c1921242cd119395173ef46e2629bcdb2 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:50 +0000 Subject: atlx: make local functions/data static Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/atlx/atl1.c | 12 +++++++----- drivers/net/atlx/atl1.h | 9 +++------ drivers/net/atlx/atlx.c | 4 ++++ 3 files changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c index dbd27b8e66b..43579b3b24a 100644 --- a/drivers/net/atlx/atl1.c +++ b/drivers/net/atlx/atl1.c @@ -91,6 +91,8 @@ MODULE_VERSION(ATLX_DRIVER_VERSION); /* Temporary hack for merging atl1 and atl2 */ #include "atlx.c" +static const struct ethtool_ops atl1_ethtool_ops; + /* * This is the only thing that needs to be changed to adjust the * maximum number of ports that the driver can manage. @@ -353,7 +355,7 @@ static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value) * hw - Struct containing variables accessed by shared code * reg_addr - address of the PHY register to read */ -s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data) +static s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data) { u32 val; int i; @@ -553,7 +555,7 @@ static s32 atl1_read_mac_addr(struct atl1_hw *hw) * 1. calcu 32bit CRC for multicast address * 2. reverse crc with MSB to LSB */ -u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr) +static u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr) { u32 crc32, value = 0; int i; @@ -570,7 +572,7 @@ u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr) * hw - Struct containing variables accessed by shared code * hash_value - Multicast address hash value */ -void atl1_hash_set(struct atl1_hw *hw, u32 hash_value) +static void atl1_hash_set(struct atl1_hw *hw, u32 hash_value) { u32 hash_bit, hash_reg; u32 mta; @@ -914,7 +916,7 @@ static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex return 0; } -void atl1_set_mac_addr(struct atl1_hw *hw) +static void atl1_set_mac_addr(struct atl1_hw *hw) { u32 value; /* @@ -3658,7 +3660,7 @@ static int atl1_nway_reset(struct net_device *netdev) return 0; } -const struct ethtool_ops atl1_ethtool_ops = { +static const struct ethtool_ops atl1_ethtool_ops = { .get_settings = atl1_get_settings, .set_settings = atl1_set_settings, .get_drvinfo = atl1_get_drvinfo, diff --git a/drivers/net/atlx/atl1.h b/drivers/net/atlx/atl1.h index 9c0ddb273ac..68de8cbfb3e 100644 --- a/drivers/net/atlx/atl1.h +++ b/drivers/net/atlx/atl1.h @@ -56,16 +56,13 @@ struct atl1_adapter; struct atl1_hw; /* function prototypes needed by multiple files */ -u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr); -void atl1_hash_set(struct atl1_hw *hw, u32 hash_value); -s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data); -void atl1_set_mac_addr(struct atl1_hw *hw); +static u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr); +static void atl1_hash_set(struct atl1_hw *hw, u32 hash_value); +static void atl1_set_mac_addr(struct atl1_hw *hw); static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); static u32 atl1_check_link(struct atl1_adapter *adapter); -extern const struct ethtool_ops atl1_ethtool_ops; - /* hardware definitions specific to L1 */ /* Block IDLE Status Register */ diff --git a/drivers/net/atlx/atlx.c b/drivers/net/atlx/atlx.c index f979ea2d6d3..afb7f7dd1bb 100644 --- a/drivers/net/atlx/atlx.c +++ b/drivers/net/atlx/atlx.c @@ -41,6 +41,10 @@ #include "atlx.h" +static s32 atlx_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data); +static u32 atlx_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr); +static void atlx_set_mac_addr(struct atl1_hw *hw); + static struct atlx_spi_flash_dev flash_table[] = { /* MFR_NAME WRSR READ PRGM WREN WRDI RDSR RDID SEC_ERS CHIP_ERS */ {"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62}, -- cgit v1.2.3-70-g09d2 From 89ff05ec553f3e70b8773c501da01bf7ad952cab Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 08:37:41 +0000 Subject: phylib: make local function static The following functions are not used directly by any drivers: phy_attach_direct phy_device_create phy_prepare_link genphy_config_advert genphy_setup_forced phy_config_interrupt phy_clear_interrypt phy_sanitize_settings phy_enable_interrupts phy_disable_interrupts Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- Documentation/networking/phy.txt | 18 ------------------ drivers/net/phy/phy.c | 13 +++++-------- drivers/net/phy/phy_device.c | 19 ++++++++++--------- include/linux/phy.h | 12 ------------ 4 files changed, 15 insertions(+), 47 deletions(-) diff --git a/Documentation/networking/phy.txt b/Documentation/networking/phy.txt index 88bb71b46da..9eb1ba52013 100644 --- a/Documentation/networking/phy.txt +++ b/Documentation/networking/phy.txt @@ -177,18 +177,6 @@ Doing it all yourself A convenience function to print out the PHY status neatly. - int phy_clear_interrupt(struct phy_device *phydev); - int phy_config_interrupt(struct phy_device *phydev, u32 interrupts); - - Clear the PHY's interrupt, and configure which ones are allowed, - respectively. Currently only supports all on, or all off. - - int phy_enable_interrupts(struct phy_device *phydev); - int phy_disable_interrupts(struct phy_device *phydev); - - Functions which enable/disable PHY interrupts, clearing them - before and after, respectively. - int phy_start_interrupts(struct phy_device *phydev); int phy_stop_interrupts(struct phy_device *phydev); @@ -213,12 +201,6 @@ Doing it all yourself Fills the phydev structure with up-to-date information about the current settings in the PHY. - void phy_sanitize_settings(struct phy_device *phydev) - - Resolves differences between currently desired settings, and - supported settings for the given PHY device. Does not make - the changes in the hardware, though. - int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd); int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd); diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 1bb16cb7943..7670aac0e93 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -65,7 +65,7 @@ EXPORT_SYMBOL(phy_print_status); * * Returns 0 on success on < 0 on error. */ -int phy_clear_interrupt(struct phy_device *phydev) +static int phy_clear_interrupt(struct phy_device *phydev) { int err = 0; @@ -82,7 +82,7 @@ int phy_clear_interrupt(struct phy_device *phydev) * * Returns 0 on success on < 0 on error. */ -int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) +static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) { int err = 0; @@ -208,7 +208,7 @@ static inline int phy_find_valid(int idx, u32 features) * duplexes. Drop down by one in this order: 1000/FULL, * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. */ -void phy_sanitize_settings(struct phy_device *phydev) +static void phy_sanitize_settings(struct phy_device *phydev) { u32 features = phydev->supported; int idx; @@ -223,7 +223,6 @@ void phy_sanitize_settings(struct phy_device *phydev) phydev->speed = settings[idx].speed; phydev->duplex = settings[idx].duplex; } -EXPORT_SYMBOL(phy_sanitize_settings); /** * phy_ethtool_sset - generic ethtool sset function, handles all the details @@ -532,7 +531,7 @@ static irqreturn_t phy_interrupt(int irq, void *phy_dat) * phy_enable_interrupts - Enable the interrupts from the PHY side * @phydev: target phy_device struct */ -int phy_enable_interrupts(struct phy_device *phydev) +static int phy_enable_interrupts(struct phy_device *phydev) { int err; @@ -545,13 +544,12 @@ int phy_enable_interrupts(struct phy_device *phydev) return err; } -EXPORT_SYMBOL(phy_enable_interrupts); /** * phy_disable_interrupts - Disable the PHY interrupts from the PHY side * @phydev: target phy_device struct */ -int phy_disable_interrupts(struct phy_device *phydev) +static int phy_disable_interrupts(struct phy_device *phydev) { int err; @@ -574,7 +572,6 @@ phy_err: return err; } -EXPORT_SYMBOL(phy_disable_interrupts); /** * phy_start_interrupts - request and enable interrupts for a PHY device diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 16ddc77313c..993c52c82ae 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -57,6 +57,9 @@ extern void mdio_bus_exit(void); static LIST_HEAD(phy_fixup_list); static DEFINE_MUTEX(phy_fixup_lock); +static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, + u32 flags, phy_interface_t interface); + /* * Creates a new phy_fixup and adds it to the list * @bus_id: A string which matches phydev->dev.bus_id (or PHY_ANY_ID) @@ -146,7 +149,8 @@ int phy_scan_fixups(struct phy_device *phydev) } EXPORT_SYMBOL(phy_scan_fixups); -struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id) +static struct phy_device* phy_device_create(struct mii_bus *bus, + int addr, int phy_id) { struct phy_device *dev; @@ -193,7 +197,6 @@ struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id) return dev; } -EXPORT_SYMBOL(phy_device_create); /** * get_phy_id - reads the specified addr for its ID. @@ -316,7 +319,7 @@ EXPORT_SYMBOL(phy_find_first); * If you want to monitor your own link state, don't call * this function. */ -void phy_prepare_link(struct phy_device *phydev, +static void phy_prepare_link(struct phy_device *phydev, void (*handler)(struct net_device *)) { phydev->adjust_link = handler; @@ -435,8 +438,8 @@ int phy_init_hw(struct phy_device *phydev) * the attaching device, and given a callback for link status * change. The phy_device is returned to the attaching driver. */ -int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, - u32 flags, phy_interface_t interface) +static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, + u32 flags, phy_interface_t interface) { struct device *d = &phydev->dev; @@ -473,7 +476,6 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, * (dev_flags and interface) */ return phy_init_hw(phydev); } -EXPORT_SYMBOL(phy_attach_direct); /** * phy_attach - attach a network device to a particular PHY device @@ -540,7 +542,7 @@ EXPORT_SYMBOL(phy_detach); * what is supported. Returns < 0 on error, 0 if the PHY's advertisement * hasn't changed, and > 0 if it has changed. */ -int genphy_config_advert(struct phy_device *phydev) +static int genphy_config_advert(struct phy_device *phydev) { u32 advertise; int oldadv, adv; @@ -605,7 +607,6 @@ int genphy_config_advert(struct phy_device *phydev) return changed; } -EXPORT_SYMBOL(genphy_config_advert); /** * genphy_setup_forced - configures/forces speed/duplex from @phydev @@ -615,7 +616,7 @@ EXPORT_SYMBOL(genphy_config_advert); * to the values in phydev. Assumes that the values are valid. * Please see phy_sanitize_settings(). */ -int genphy_setup_forced(struct phy_device *phydev) +static int genphy_setup_forced(struct phy_device *phydev) { int err; int ctl = 0; diff --git a/include/linux/phy.h b/include/linux/phy.h index a6e047a04f7..7da5fa84595 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -472,11 +472,7 @@ static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val) int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id); struct phy_device* get_phy_device(struct mii_bus *bus, int addr); int phy_device_register(struct phy_device *phy); -int phy_clear_interrupt(struct phy_device *phydev); -int phy_config_interrupt(struct phy_device *phydev, u32 interrupts); int phy_init_hw(struct phy_device *phydev); -int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, - u32 flags, phy_interface_t interface); struct phy_device * phy_attach(struct net_device *dev, const char *bus_id, u32 flags, phy_interface_t interface); struct phy_device *phy_find_first(struct mii_bus *bus); @@ -492,17 +488,12 @@ void phy_start(struct phy_device *phydev); void phy_stop(struct phy_device *phydev); int phy_start_aneg(struct phy_device *phydev); -void phy_sanitize_settings(struct phy_device *phydev); int phy_stop_interrupts(struct phy_device *phydev); -int phy_enable_interrupts(struct phy_device *phydev); -int phy_disable_interrupts(struct phy_device *phydev); static inline int phy_read_status(struct phy_device *phydev) { return phydev->drv->read_status(phydev); } -int genphy_config_advert(struct phy_device *phydev); -int genphy_setup_forced(struct phy_device *phydev); int genphy_restart_aneg(struct phy_device *phydev); int genphy_config_aneg(struct phy_device *phydev); int genphy_update_link(struct phy_device *phydev); @@ -511,8 +502,6 @@ int genphy_suspend(struct phy_device *phydev); int genphy_resume(struct phy_device *phydev); void phy_driver_unregister(struct phy_driver *drv); int phy_driver_register(struct phy_driver *new_driver); -void phy_prepare_link(struct phy_device *phydev, - void (*adjust_link)(struct net_device *)); void phy_state_machine(struct work_struct *work); void phy_start_machine(struct phy_device *phydev, void (*handler)(struct net_device *)); @@ -523,7 +512,6 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); int phy_start_interrupts(struct phy_device *phydev); void phy_print_status(struct phy_device *phydev); -struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id); void phy_device_free(struct phy_device *phydev); int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, -- cgit v1.2.3-70-g09d2 From 42821a5b393e36f5c0b267473d59d375578df7ec Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:53 +0000 Subject: vxge: make functions local and remove dead code Use results of make namespacecheck to make functions local and remove code that is not used. Also rename initialize_ethtool_ops to vxge_initialize_ethtool_ops. Compile tested only. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/vxge/vxge-config.c | 332 ++++++++++++++++++++++++++++++---------- drivers/net/vxge/vxge-config.h | 227 +-------------------------- drivers/net/vxge/vxge-ethtool.c | 2 +- drivers/net/vxge/vxge-main.c | 64 ++++---- drivers/net/vxge/vxge-main.h | 59 +------ drivers/net/vxge/vxge-traffic.c | 101 ++---------- drivers/net/vxge/vxge-traffic.h | 134 ---------------- 7 files changed, 304 insertions(+), 615 deletions(-) diff --git a/drivers/net/vxge/vxge-config.c b/drivers/net/vxge/vxge-config.c index 0e6db593560..906a3ca3676 100644 --- a/drivers/net/vxge/vxge-config.c +++ b/drivers/net/vxge/vxge-config.c @@ -20,6 +20,179 @@ #include "vxge-traffic.h" #include "vxge-config.h" +static enum vxge_hw_status +__vxge_hw_fifo_create( + struct __vxge_hw_vpath_handle *vpath_handle, + struct vxge_hw_fifo_attr *attr); + +static enum vxge_hw_status +__vxge_hw_fifo_abort( + struct __vxge_hw_fifo *fifoh); + +static enum vxge_hw_status +__vxge_hw_fifo_reset( + struct __vxge_hw_fifo *ringh); + +static enum vxge_hw_status +__vxge_hw_fifo_delete( + struct __vxge_hw_vpath_handle *vpath_handle); + +static struct __vxge_hw_blockpool_entry * +__vxge_hw_blockpool_block_allocate(struct __vxge_hw_device *hldev, + u32 size); + +static void +__vxge_hw_blockpool_block_free(struct __vxge_hw_device *hldev, + struct __vxge_hw_blockpool_entry *entry); + +static void vxge_hw_blockpool_block_add(struct __vxge_hw_device *devh, + void *block_addr, + u32 length, + struct pci_dev *dma_h, + struct pci_dev *acc_handle); + +static enum vxge_hw_status +__vxge_hw_blockpool_create(struct __vxge_hw_device *hldev, + struct __vxge_hw_blockpool *blockpool, + u32 pool_size, + u32 pool_max); + +static void +__vxge_hw_blockpool_destroy(struct __vxge_hw_blockpool *blockpool); + +static void * +__vxge_hw_blockpool_malloc(struct __vxge_hw_device *hldev, + u32 size, + struct vxge_hw_mempool_dma *dma_object); + +static void +__vxge_hw_blockpool_free(struct __vxge_hw_device *hldev, + void *memblock, + u32 size, + struct vxge_hw_mempool_dma *dma_object); + + +static struct __vxge_hw_channel* +__vxge_hw_channel_allocate(struct __vxge_hw_vpath_handle *vph, + enum __vxge_hw_channel_type type, u32 length, + u32 per_dtr_space, void *userdata); + +static void +__vxge_hw_channel_free( + struct __vxge_hw_channel *channel); + +static enum vxge_hw_status +__vxge_hw_channel_initialize( + struct __vxge_hw_channel *channel); + +static enum vxge_hw_status +__vxge_hw_channel_reset( + struct __vxge_hw_channel *channel); + +static enum vxge_hw_status __vxge_hw_ring_delete(struct __vxge_hw_vpath_handle *vp); + +static enum vxge_hw_status +__vxge_hw_device_fifo_config_check(struct vxge_hw_fifo_config *fifo_config); + +static enum vxge_hw_status +__vxge_hw_device_config_check(struct vxge_hw_device_config *new_config); + +static void +__vxge_hw_device_id_get(struct __vxge_hw_device *hldev); + +static void +__vxge_hw_device_host_info_get(struct __vxge_hw_device *hldev); + +static enum vxge_hw_status +__vxge_hw_vpath_card_info_get( + u32 vp_id, + struct vxge_hw_vpath_reg __iomem *vpath_reg, + struct vxge_hw_device_hw_info *hw_info); + +static enum vxge_hw_status +__vxge_hw_device_initialize(struct __vxge_hw_device *hldev); + +static void +__vxge_hw_device_pci_e_init(struct __vxge_hw_device *hldev); + +static enum vxge_hw_status +__vxge_hw_device_reg_addr_get(struct __vxge_hw_device *hldev); + +static enum vxge_hw_status +__vxge_hw_device_register_poll( + void __iomem *reg, + u64 mask, u32 max_millis); + +static inline enum vxge_hw_status +__vxge_hw_pio_mem_write64(u64 val64, void __iomem *addr, + u64 mask, u32 max_millis) +{ + __vxge_hw_pio_mem_write32_lower((u32)vxge_bVALn(val64, 32, 32), addr); + wmb(); + + __vxge_hw_pio_mem_write32_upper((u32)vxge_bVALn(val64, 0, 32), addr); + wmb(); + + return __vxge_hw_device_register_poll(addr, mask, max_millis); +} + +static struct vxge_hw_mempool* +__vxge_hw_mempool_create(struct __vxge_hw_device *devh, u32 memblock_size, + u32 item_size, u32 private_size, u32 items_initial, + u32 items_max, struct vxge_hw_mempool_cbs *mp_callback, + void *userdata); +static void __vxge_hw_mempool_destroy(struct vxge_hw_mempool *mempool); + +static enum vxge_hw_status +__vxge_hw_vpath_stats_get(struct __vxge_hw_virtualpath *vpath, + struct vxge_hw_vpath_stats_hw_info *hw_stats); + +static enum vxge_hw_status +vxge_hw_vpath_stats_enable(struct __vxge_hw_vpath_handle *vpath_handle); + +static enum vxge_hw_status +__vxge_hw_legacy_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg); + +static u64 +__vxge_hw_vpath_pci_func_mode_get(u32 vp_id, + struct vxge_hw_vpath_reg __iomem *vpath_reg); + +static u32 +__vxge_hw_vpath_func_id_get(u32 vp_id, struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg); + +static enum vxge_hw_status +__vxge_hw_vpath_addr_get(u32 vp_id, struct vxge_hw_vpath_reg __iomem *vpath_reg, + u8 (macaddr)[ETH_ALEN], u8 (macaddr_mask)[ETH_ALEN]); + +static enum vxge_hw_status +__vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath); + + +static enum vxge_hw_status +__vxge_hw_vpath_sw_reset(struct __vxge_hw_device *devh, u32 vp_id); + +static enum vxge_hw_status +__vxge_hw_vpath_fw_ver_get(u32 vp_id, struct vxge_hw_vpath_reg __iomem *vpath_reg, + struct vxge_hw_device_hw_info *hw_info); + +static enum vxge_hw_status +__vxge_hw_vpath_mac_configure(struct __vxge_hw_device *devh, u32 vp_id); + +static void +__vxge_hw_vp_terminate(struct __vxge_hw_device *devh, u32 vp_id); + +static enum vxge_hw_status +__vxge_hw_vpath_stats_access(struct __vxge_hw_virtualpath *vpath, + u32 operation, u32 offset, u64 *stat); + +static enum vxge_hw_status +__vxge_hw_vpath_xmac_tx_stats_get(struct __vxge_hw_virtualpath *vpath, + struct vxge_hw_xmac_vpath_tx_stats *vpath_tx_stats); + +static enum vxge_hw_status +__vxge_hw_vpath_xmac_rx_stats_get(struct __vxge_hw_virtualpath *vpath, + struct vxge_hw_xmac_vpath_rx_stats *vpath_rx_stats); + /* * __vxge_hw_channel_allocate - Allocate memory for channel * This function allocates required memory for the channel and various arrays @@ -190,7 +363,7 @@ __vxge_hw_device_pci_e_init(struct __vxge_hw_device *hldev) * Will poll certain register for specified amount of time. * Will poll until masked bit is not cleared. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_device_register_poll(void __iomem *reg, u64 mask, u32 max_millis) { u64 val64; @@ -221,7 +394,7 @@ __vxge_hw_device_register_poll(void __iomem *reg, u64 mask, u32 max_millis) * in progress * This routine checks the vpath reset in progress register is turned zero */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_device_vpath_reset_in_prog_check(u64 __iomem *vpath_rst_in_prog) { enum vxge_hw_status status; @@ -236,7 +409,7 @@ __vxge_hw_device_vpath_reset_in_prog_check(u64 __iomem *vpath_rst_in_prog) * This routine sets the swapper and reads the toc pointer and returns the * memory mapped address of the toc */ -struct vxge_hw_toc_reg __iomem * +static struct vxge_hw_toc_reg __iomem * __vxge_hw_device_toc_get(void __iomem *bar0) { u64 val64; @@ -779,7 +952,7 @@ exit: * vxge_hw_device_xmac_aggr_stats_get - Get the Statistics on aggregate port * Get the Statistics on aggregate port */ -enum vxge_hw_status +static enum vxge_hw_status vxge_hw_device_xmac_aggr_stats_get(struct __vxge_hw_device *hldev, u32 port, struct vxge_hw_xmac_aggr_stats *aggr_stats) { @@ -814,7 +987,7 @@ exit: * vxge_hw_device_xmac_port_stats_get - Get the Statistics on a port * Get the Statistics on port */ -enum vxge_hw_status +static enum vxge_hw_status vxge_hw_device_xmac_port_stats_get(struct __vxge_hw_device *hldev, u32 port, struct vxge_hw_xmac_port_stats *port_stats) { @@ -952,20 +1125,6 @@ u32 vxge_hw_device_trace_level_get(struct __vxge_hw_device *hldev) return 0; #endif } -/* - * vxge_hw_device_debug_mask_get - Get the debug mask - * This routine returns the current debug mask set - */ -u32 vxge_hw_device_debug_mask_get(struct __vxge_hw_device *hldev) -{ -#if defined(VXGE_DEBUG_TRACE_MASK) || defined(VXGE_DEBUG_ERR_MASK) - if (hldev == NULL) - return 0; - return hldev->debug_module_mask; -#else - return 0; -#endif -} /* * vxge_hw_getpause_data -Pause frame frame generation and reception. @@ -1090,7 +1249,7 @@ __vxge_hw_ring_block_next_pointer_set(u8 *block, dma_addr_t dma_next) * first block * Returns the dma address of the first RxD block */ -u64 __vxge_hw_ring_first_block_address_get(struct __vxge_hw_ring *ring) +static u64 __vxge_hw_ring_first_block_address_get(struct __vxge_hw_ring *ring) { struct vxge_hw_mempool_dma *dma_object; @@ -1252,7 +1411,7 @@ exit: * This function creates Ring and initializes it. * */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_ring_create(struct __vxge_hw_vpath_handle *vp, struct vxge_hw_ring_attr *attr) { @@ -1363,7 +1522,7 @@ exit: * __vxge_hw_ring_abort - Returns the RxD * This function terminates the RxDs of ring */ -enum vxge_hw_status __vxge_hw_ring_abort(struct __vxge_hw_ring *ring) +static enum vxge_hw_status __vxge_hw_ring_abort(struct __vxge_hw_ring *ring) { void *rxdh; struct __vxge_hw_channel *channel; @@ -1392,7 +1551,7 @@ enum vxge_hw_status __vxge_hw_ring_abort(struct __vxge_hw_ring *ring) * __vxge_hw_ring_reset - Resets the ring * This function resets the ring during vpath reset operation */ -enum vxge_hw_status __vxge_hw_ring_reset(struct __vxge_hw_ring *ring) +static enum vxge_hw_status __vxge_hw_ring_reset(struct __vxge_hw_ring *ring) { enum vxge_hw_status status = VXGE_HW_OK; struct __vxge_hw_channel *channel; @@ -1419,7 +1578,7 @@ exit: * __vxge_hw_ring_delete - Removes the ring * This function freeup the memory pool and removes the ring */ -enum vxge_hw_status __vxge_hw_ring_delete(struct __vxge_hw_vpath_handle *vp) +static enum vxge_hw_status __vxge_hw_ring_delete(struct __vxge_hw_vpath_handle *vp) { struct __vxge_hw_ring *ring = vp->vpath->ringh; @@ -1438,7 +1597,7 @@ enum vxge_hw_status __vxge_hw_ring_delete(struct __vxge_hw_vpath_handle *vp) * __vxge_hw_mempool_grow * Will resize mempool up to %num_allocate value. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_mempool_grow(struct vxge_hw_mempool *mempool, u32 num_allocate, u32 *num_allocated) { @@ -1527,7 +1686,7 @@ exit: * with size enough to hold %items_initial number of items. Memory is * DMA-able but client must map/unmap before interoperating with the device. */ -struct vxge_hw_mempool* +static struct vxge_hw_mempool* __vxge_hw_mempool_create( struct __vxge_hw_device *devh, u32 memblock_size, @@ -1644,7 +1803,7 @@ exit: /* * vxge_hw_mempool_destroy */ -void __vxge_hw_mempool_destroy(struct vxge_hw_mempool *mempool) +static void __vxge_hw_mempool_destroy(struct vxge_hw_mempool *mempool) { u32 i, j; struct __vxge_hw_device *devh = mempool->devh; @@ -1700,7 +1859,7 @@ __vxge_hw_device_fifo_config_check(struct vxge_hw_fifo_config *fifo_config) * __vxge_hw_device_vpath_config_check - Check vpath configuration. * Check the vpath configuration */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_device_vpath_config_check(struct vxge_hw_vp_config *vp_config) { enum vxge_hw_status status; @@ -1922,7 +2081,7 @@ vxge_hw_device_config_default_get(struct vxge_hw_device_config *device_config) * _hw_legacy_swapper_set - Set the swapper bits for the legacy secion. * Set the swapper bits appropriately for the lagacy section. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_legacy_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg) { u64 val64; @@ -1977,7 +2136,7 @@ __vxge_hw_legacy_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg) * __vxge_hw_vpath_swapper_set - Set the swapper bits for the vpath. * Set the swapper bits appropriately for the vpath. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_swapper_set(struct vxge_hw_vpath_reg __iomem *vpath_reg) { #ifndef __BIG_ENDIAN @@ -1996,7 +2155,7 @@ __vxge_hw_vpath_swapper_set(struct vxge_hw_vpath_reg __iomem *vpath_reg) * __vxge_hw_kdfc_swapper_set - Set the swapper bits for the kdfc. * Set the swapper bits appropriately for the vpath. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_kdfc_swapper_set( struct vxge_hw_legacy_reg __iomem *legacy_reg, struct vxge_hw_vpath_reg __iomem *vpath_reg) @@ -2020,28 +2179,6 @@ __vxge_hw_kdfc_swapper_set( return VXGE_HW_OK; } -/* - * vxge_hw_mgmt_device_config - Retrieve device configuration. - * Get device configuration. Permits to retrieve at run-time configuration - * values that were used to initialize and configure the device. - */ -enum vxge_hw_status -vxge_hw_mgmt_device_config(struct __vxge_hw_device *hldev, - struct vxge_hw_device_config *dev_config, int size) -{ - - if ((hldev == NULL) || (hldev->magic != VXGE_HW_DEVICE_MAGIC)) - return VXGE_HW_ERR_INVALID_DEVICE; - - if (size != sizeof(struct vxge_hw_device_config)) - return VXGE_HW_ERR_VERSION_CONFLICT; - - memcpy(dev_config, &hldev->config, - sizeof(struct vxge_hw_device_config)); - - return VXGE_HW_OK; -} - /* * vxge_hw_mgmt_reg_read - Read Titan register. */ @@ -2438,7 +2575,7 @@ exit: * __vxge_hw_fifo_abort - Returns the TxD * This function terminates the TxDs of fifo */ -enum vxge_hw_status __vxge_hw_fifo_abort(struct __vxge_hw_fifo *fifo) +static enum vxge_hw_status __vxge_hw_fifo_abort(struct __vxge_hw_fifo *fifo) { void *txdlh; @@ -2466,7 +2603,7 @@ enum vxge_hw_status __vxge_hw_fifo_abort(struct __vxge_hw_fifo *fifo) * __vxge_hw_fifo_reset - Resets the fifo * This function resets the fifo during vpath reset operation */ -enum vxge_hw_status __vxge_hw_fifo_reset(struct __vxge_hw_fifo *fifo) +static enum vxge_hw_status __vxge_hw_fifo_reset(struct __vxge_hw_fifo *fifo) { enum vxge_hw_status status = VXGE_HW_OK; @@ -2501,7 +2638,7 @@ enum vxge_hw_status __vxge_hw_fifo_delete(struct __vxge_hw_vpath_handle *vp) * in pci config space. * Read from the vpath pci config space. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_pci_read(struct __vxge_hw_virtualpath *vpath, u32 phy_func_0, u32 offset, u32 *val) { @@ -2542,7 +2679,7 @@ exit: * __vxge_hw_vpath_func_id_get - Get the function id of the vpath. * Returns the function number of the vpath. */ -u32 +static u32 __vxge_hw_vpath_func_id_get(u32 vp_id, struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg) { @@ -2573,7 +2710,7 @@ __vxge_hw_read_rts_ds(struct vxge_hw_vpath_reg __iomem *vpath_reg, * __vxge_hw_vpath_card_info_get - Get the serial numbers, * part number and product description. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_card_info_get( u32 vp_id, struct vxge_hw_vpath_reg __iomem *vpath_reg, @@ -2695,7 +2832,7 @@ __vxge_hw_vpath_card_info_get( * __vxge_hw_vpath_fw_ver_get - Get the fw version * Returns FW Version */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_fw_ver_get( u32 vp_id, struct vxge_hw_vpath_reg __iomem *vpath_reg, @@ -2789,7 +2926,7 @@ exit: * __vxge_hw_vpath_pci_func_mode_get - Get the pci mode * Returns pci function mode */ -u64 +static u64 __vxge_hw_vpath_pci_func_mode_get( u32 vp_id, struct vxge_hw_vpath_reg __iomem *vpath_reg) @@ -2995,7 +3132,7 @@ exit: * __vxge_hw_vpath_addr_get - Get the hw address entry for this vpath * from MAC address table. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_addr_get( u32 vp_id, struct vxge_hw_vpath_reg __iomem *vpath_reg, u8 (macaddr)[ETH_ALEN], u8 (macaddr_mask)[ETH_ALEN]) @@ -3347,7 +3484,7 @@ __vxge_hw_vpath_mgmt_read( * This routine checks the vpath_rst_in_prog register to see if * adapter completed the reset process for the vpath */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath) { enum vxge_hw_status status; @@ -3365,7 +3502,7 @@ __vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath) * __vxge_hw_vpath_reset * This routine resets the vpath on the device */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_reset(struct __vxge_hw_device *hldev, u32 vp_id) { u64 val64; @@ -3383,7 +3520,7 @@ __vxge_hw_vpath_reset(struct __vxge_hw_device *hldev, u32 vp_id) * __vxge_hw_vpath_sw_reset * This routine resets the vpath structures */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_sw_reset(struct __vxge_hw_device *hldev, u32 vp_id) { enum vxge_hw_status status = VXGE_HW_OK; @@ -3408,7 +3545,7 @@ exit: * This routine configures the prc registers of virtual path using the config * passed */ -void +static void __vxge_hw_vpath_prc_configure(struct __vxge_hw_device *hldev, u32 vp_id) { u64 val64; @@ -3480,7 +3617,7 @@ __vxge_hw_vpath_prc_configure(struct __vxge_hw_device *hldev, u32 vp_id) * This routine configures the kdfc registers of virtual path using the * config passed */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_kdfc_configure(struct __vxge_hw_device *hldev, u32 vp_id) { u64 val64; @@ -3553,7 +3690,7 @@ exit: * __vxge_hw_vpath_mac_configure * This routine configures the mac of virtual path using the config passed */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_mac_configure(struct __vxge_hw_device *hldev, u32 vp_id) { u64 val64; @@ -3621,7 +3758,7 @@ __vxge_hw_vpath_mac_configure(struct __vxge_hw_device *hldev, u32 vp_id) * This routine configures the tim registers of virtual path using the config * passed */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id) { u64 val64; @@ -3897,7 +4034,7 @@ vxge_hw_vpath_tti_ci_set(struct __vxge_hw_device *hldev, u32 vp_id) * This routine is the final phase of init which initializes the * registers of the vpath using the configuration passed. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_initialize(struct __vxge_hw_device *hldev, u32 vp_id) { u64 val64; @@ -3966,7 +4103,7 @@ exit: * This routine is the initial phase of init which resets the vpath and * initializes the software support structures. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vp_initialize(struct __vxge_hw_device *hldev, u32 vp_id, struct vxge_hw_vp_config *config) { @@ -4022,7 +4159,7 @@ exit: * __vxge_hw_vp_terminate - Terminate Virtual Path structure * This routine closes all channels it opened and freeup memory */ -void +static void __vxge_hw_vp_terminate(struct __vxge_hw_device *hldev, u32 vp_id) { struct __vxge_hw_virtualpath *vpath; @@ -4384,7 +4521,7 @@ vxge_hw_vpath_enable(struct __vxge_hw_vpath_handle *vp) * Enable the DMA vpath statistics. The function is to be called to re-enable * the adapter to update stats into the host memory */ -enum vxge_hw_status +static enum vxge_hw_status vxge_hw_vpath_stats_enable(struct __vxge_hw_vpath_handle *vp) { enum vxge_hw_status status = VXGE_HW_OK; @@ -4409,7 +4546,7 @@ exit: * __vxge_hw_vpath_stats_access - Get the statistics from the given location * and offset and perform an operation */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_stats_access(struct __vxge_hw_virtualpath *vpath, u32 operation, u32 offset, u64 *stat) { @@ -4445,7 +4582,7 @@ vpath_stats_access_exit: /* * __vxge_hw_vpath_xmac_tx_stats_get - Get the TX Statistics of a vpath */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_xmac_tx_stats_get( struct __vxge_hw_virtualpath *vpath, struct vxge_hw_xmac_vpath_tx_stats *vpath_tx_stats) @@ -4478,9 +4615,9 @@ exit: /* * __vxge_hw_vpath_xmac_rx_stats_get - Get the RX Statistics of a vpath */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_vpath_xmac_rx_stats_get(struct __vxge_hw_virtualpath *vpath, - struct vxge_hw_xmac_vpath_rx_stats *vpath_rx_stats) + struct vxge_hw_xmac_vpath_rx_stats *vpath_rx_stats) { u64 *val64; enum vxge_hw_status status = VXGE_HW_OK; @@ -4509,9 +4646,9 @@ exit: /* * __vxge_hw_vpath_stats_get - Get the vpath hw statistics. */ -enum vxge_hw_status __vxge_hw_vpath_stats_get( - struct __vxge_hw_virtualpath *vpath, - struct vxge_hw_vpath_stats_hw_info *hw_stats) +static enum vxge_hw_status +__vxge_hw_vpath_stats_get(struct __vxge_hw_virtualpath *vpath, + struct vxge_hw_vpath_stats_hw_info *hw_stats) { u64 val64; enum vxge_hw_status status = VXGE_HW_OK; @@ -4643,6 +4780,32 @@ exit: return status; } + +static void vxge_os_dma_malloc_async(struct pci_dev *pdev, void *devh, + unsigned long size) +{ + gfp_t flags; + void *vaddr; + + if (in_interrupt()) + flags = GFP_ATOMIC | GFP_DMA; + else + flags = GFP_KERNEL | GFP_DMA; + + vaddr = kmalloc((size), flags); + + vxge_hw_blockpool_block_add(devh, vaddr, size, pdev, pdev); +} + +static void vxge_os_dma_free(struct pci_dev *pdev, const void *vaddr, + struct pci_dev **p_dma_acch) +{ + unsigned long misaligned = *(unsigned long *)p_dma_acch; + u8 *tmp = (u8 *)vaddr; + tmp -= misaligned; + kfree((void *)tmp); +} + /* * __vxge_hw_blockpool_create - Create block pool */ @@ -4845,12 +5008,11 @@ void __vxge_hw_blockpool_blocks_remove(struct __vxge_hw_blockpool *blockpool) * vxge_hw_blockpool_block_add - callback for vxge_os_dma_malloc_async * Adds a block to block pool */ -void vxge_hw_blockpool_block_add( - struct __vxge_hw_device *devh, - void *block_addr, - u32 length, - struct pci_dev *dma_h, - struct pci_dev *acc_handle) +static void vxge_hw_blockpool_block_add(struct __vxge_hw_device *devh, + void *block_addr, + u32 length, + struct pci_dev *dma_h, + struct pci_dev *acc_handle) { struct __vxge_hw_blockpool *blockpool; struct __vxge_hw_blockpool_entry *entry = NULL; diff --git a/drivers/net/vxge/vxge-config.h b/drivers/net/vxge/vxge-config.h index 1a94343023c..5c00861b6c2 100644 --- a/drivers/net/vxge/vxge-config.h +++ b/drivers/net/vxge/vxge-config.h @@ -183,11 +183,6 @@ struct vxge_hw_device_version { char version[VXGE_HW_FW_STRLEN]; }; -u64 -__vxge_hw_vpath_pci_func_mode_get( - u32 vp_id, - struct vxge_hw_vpath_reg __iomem *vpath_reg); - /** * struct vxge_hw_fifo_config - Configuration of fifo. * @enable: Is this fifo to be commissioned @@ -1426,9 +1421,6 @@ struct vxge_hw_rth_hash_types { u8 hash_type_ipv6ex_en; }; -u32 -vxge_hw_device_debug_mask_get(struct __vxge_hw_device *devh); - void vxge_hw_device_debug_set( struct __vxge_hw_device *devh, enum vxge_debug_level level, @@ -1440,9 +1432,6 @@ vxge_hw_device_error_level_get(struct __vxge_hw_device *devh); u32 vxge_hw_device_trace_level_get(struct __vxge_hw_device *devh); -u32 -vxge_hw_device_debug_mask_get(struct __vxge_hw_device *devh); - /** * vxge_hw_ring_rxd_size_get - Get the size of ring descriptor. * @buf_mode: Buffer mode (1, 3 or 5) @@ -1817,60 +1806,10 @@ struct vxge_hw_vpath_attr { struct vxge_hw_fifo_attr fifo_attr; }; -enum vxge_hw_status -__vxge_hw_blockpool_create(struct __vxge_hw_device *hldev, - struct __vxge_hw_blockpool *blockpool, - u32 pool_size, - u32 pool_max); - -void -__vxge_hw_blockpool_destroy(struct __vxge_hw_blockpool *blockpool); - -struct __vxge_hw_blockpool_entry * -__vxge_hw_blockpool_block_allocate(struct __vxge_hw_device *hldev, - u32 size); - -void -__vxge_hw_blockpool_block_free(struct __vxge_hw_device *hldev, - struct __vxge_hw_blockpool_entry *entry); - -void * -__vxge_hw_blockpool_malloc(struct __vxge_hw_device *hldev, - u32 size, - struct vxge_hw_mempool_dma *dma_object); - -void -__vxge_hw_blockpool_free(struct __vxge_hw_device *hldev, - void *memblock, - u32 size, - struct vxge_hw_mempool_dma *dma_object); - -enum vxge_hw_status -__vxge_hw_device_fifo_config_check(struct vxge_hw_fifo_config *fifo_config); - -enum vxge_hw_status -__vxge_hw_device_config_check(struct vxge_hw_device_config *new_config); - -enum vxge_hw_status -vxge_hw_mgmt_device_config(struct __vxge_hw_device *devh, - struct vxge_hw_device_config *dev_config, int size); - enum vxge_hw_status __devinit vxge_hw_device_hw_info_get( void __iomem *bar0, struct vxge_hw_device_hw_info *hw_info); -enum vxge_hw_status -__vxge_hw_vpath_fw_ver_get( - u32 vp_id, - struct vxge_hw_vpath_reg __iomem *vpath_reg, - struct vxge_hw_device_hw_info *hw_info); - -enum vxge_hw_status -__vxge_hw_vpath_card_info_get( - u32 vp_id, - struct vxge_hw_vpath_reg __iomem *vpath_reg, - struct vxge_hw_device_hw_info *hw_info); - enum vxge_hw_status __devinit vxge_hw_device_config_default_get( struct vxge_hw_device_config *device_config); @@ -1954,38 +1893,6 @@ out: return vaddr; } -extern void vxge_hw_blockpool_block_add( - struct __vxge_hw_device *devh, - void *block_addr, - u32 length, - struct pci_dev *dma_h, - struct pci_dev *acc_handle); - -static inline void vxge_os_dma_malloc_async(struct pci_dev *pdev, void *devh, - unsigned long size) -{ - gfp_t flags; - void *vaddr; - - if (in_interrupt()) - flags = GFP_ATOMIC | GFP_DMA; - else - flags = GFP_KERNEL | GFP_DMA; - - vaddr = kmalloc((size), flags); - - vxge_hw_blockpool_block_add(devh, vaddr, size, pdev, pdev); -} - -static inline void vxge_os_dma_free(struct pci_dev *pdev, const void *vaddr, - struct pci_dev **p_dma_acch) -{ - unsigned long misaligned = *(unsigned long *)p_dma_acch; - u8 *tmp = (u8 *)vaddr; - tmp -= misaligned; - kfree((void *)tmp); -} - /* * __vxge_hw_mempool_item_priv - will return pointer on per item private space */ @@ -2010,40 +1917,6 @@ __vxge_hw_mempool_item_priv( (*memblock_item_idx) * mempool->items_priv_size; } -enum vxge_hw_status -__vxge_hw_mempool_grow( - struct vxge_hw_mempool *mempool, - u32 num_allocate, - u32 *num_allocated); - -struct vxge_hw_mempool* -__vxge_hw_mempool_create( - struct __vxge_hw_device *devh, - u32 memblock_size, - u32 item_size, - u32 private_size, - u32 items_initial, - u32 items_max, - struct vxge_hw_mempool_cbs *mp_callback, - void *userdata); - -struct __vxge_hw_channel* -__vxge_hw_channel_allocate(struct __vxge_hw_vpath_handle *vph, - enum __vxge_hw_channel_type type, u32 length, - u32 per_dtr_space, void *userdata); - -void -__vxge_hw_channel_free( - struct __vxge_hw_channel *channel); - -enum vxge_hw_status -__vxge_hw_channel_initialize( - struct __vxge_hw_channel *channel); - -enum vxge_hw_status -__vxge_hw_channel_reset( - struct __vxge_hw_channel *channel); - /* * __vxge_hw_fifo_txdl_priv - Return the max fragments allocated * for the fifo. @@ -2065,9 +1938,6 @@ enum vxge_hw_status vxge_hw_vpath_open( struct vxge_hw_vpath_attr *attr, struct __vxge_hw_vpath_handle **vpath_handle); -enum vxge_hw_status -__vxge_hw_device_vpath_reset_in_prog_check(u64 __iomem *vpath_rst_in_prog); - enum vxge_hw_status vxge_hw_vpath_close( struct __vxge_hw_vpath_handle *vpath_handle); @@ -2089,54 +1959,9 @@ enum vxge_hw_status vxge_hw_vpath_mtu_set( struct __vxge_hw_vpath_handle *vpath_handle, u32 new_mtu); -enum vxge_hw_status vxge_hw_vpath_stats_enable( - struct __vxge_hw_vpath_handle *vpath_handle); - -enum vxge_hw_status -__vxge_hw_vpath_stats_access( - struct __vxge_hw_virtualpath *vpath, - u32 operation, - u32 offset, - u64 *stat); - -enum vxge_hw_status -__vxge_hw_vpath_xmac_tx_stats_get( - struct __vxge_hw_virtualpath *vpath, - struct vxge_hw_xmac_vpath_tx_stats *vpath_tx_stats); - -enum vxge_hw_status -__vxge_hw_vpath_xmac_rx_stats_get( - struct __vxge_hw_virtualpath *vpath, - struct vxge_hw_xmac_vpath_rx_stats *vpath_rx_stats); - -enum vxge_hw_status -__vxge_hw_vpath_stats_get( - struct __vxge_hw_virtualpath *vpath, - struct vxge_hw_vpath_stats_hw_info *hw_stats); - void vxge_hw_vpath_rx_doorbell_init(struct __vxge_hw_vpath_handle *vp); -enum vxge_hw_status -__vxge_hw_device_vpath_config_check(struct vxge_hw_vp_config *vp_config); - -void -__vxge_hw_device_pci_e_init(struct __vxge_hw_device *hldev); - -enum vxge_hw_status -__vxge_hw_legacy_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg); - -enum vxge_hw_status -__vxge_hw_vpath_swapper_set(struct vxge_hw_vpath_reg __iomem *vpath_reg); - -enum vxge_hw_status -__vxge_hw_kdfc_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg, - struct vxge_hw_vpath_reg __iomem *vpath_reg); - -enum vxge_hw_status -__vxge_hw_device_register_poll( - void __iomem *reg, - u64 mask, u32 max_millis); #ifndef readq static inline u64 readq(void __iomem *addr) @@ -2168,62 +1993,12 @@ static inline void __vxge_hw_pio_mem_write32_lower(u32 val, void __iomem *addr) writel(val, addr); } -static inline enum vxge_hw_status -__vxge_hw_pio_mem_write64(u64 val64, void __iomem *addr, - u64 mask, u32 max_millis) -{ - enum vxge_hw_status status = VXGE_HW_OK; - - __vxge_hw_pio_mem_write32_lower((u32)vxge_bVALn(val64, 32, 32), addr); - wmb(); - __vxge_hw_pio_mem_write32_upper((u32)vxge_bVALn(val64, 0, 32), addr); - wmb(); - - status = __vxge_hw_device_register_poll(addr, mask, max_millis); - return status; -} - -struct vxge_hw_toc_reg __iomem * -__vxge_hw_device_toc_get(void __iomem *bar0); - -enum vxge_hw_status -__vxge_hw_device_reg_addr_get(struct __vxge_hw_device *hldev); - -void -__vxge_hw_device_id_get(struct __vxge_hw_device *hldev); - -void -__vxge_hw_device_host_info_get(struct __vxge_hw_device *hldev); - enum vxge_hw_status vxge_hw_device_flick_link_led(struct __vxge_hw_device *devh, u64 on_off); -enum vxge_hw_status -__vxge_hw_device_initialize(struct __vxge_hw_device *hldev); - -enum vxge_hw_status -__vxge_hw_vpath_pci_read( - struct __vxge_hw_virtualpath *vpath, - u32 phy_func_0, - u32 offset, - u32 *val); - -enum vxge_hw_status -__vxge_hw_vpath_addr_get( - u32 vp_id, - struct vxge_hw_vpath_reg __iomem *vpath_reg, - u8 (macaddr)[ETH_ALEN], - u8 (macaddr_mask)[ETH_ALEN]); - -u32 -__vxge_hw_vpath_func_id_get( - u32 vp_id, struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg); - -enum vxge_hw_status -__vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath); - enum vxge_hw_status vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask); + /** * vxge_debug * @level: level of debug verbosity. diff --git a/drivers/net/vxge/vxge-ethtool.c b/drivers/net/vxge/vxge-ethtool.c index 05679e306fd..b67746eef92 100644 --- a/drivers/net/vxge/vxge-ethtool.c +++ b/drivers/net/vxge/vxge-ethtool.c @@ -1142,7 +1142,7 @@ static const struct ethtool_ops vxge_ethtool_ops = { .get_ethtool_stats = vxge_get_ethtool_stats, }; -void initialize_ethtool_ops(struct net_device *ndev) +void vxge_initialize_ethtool_ops(struct net_device *ndev) { SET_ETHTOOL_OPS(ndev, &vxge_ethtool_ops); } diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c index a69542ecb68..813829f3d02 100644 --- a/drivers/net/vxge/vxge-main.c +++ b/drivers/net/vxge/vxge-main.c @@ -82,6 +82,16 @@ module_param_array(bw_percentage, uint, NULL, 0); static struct vxge_drv_config *driver_config; +static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, + struct macInfo *mac); +static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, + struct macInfo *mac); +static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac); +static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac); +static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath); +static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath); +static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev); + static inline int is_vxge_card_up(struct vxgedev *vdev) { return test_bit(__VXGE_STATE_CARD_UP, &vdev->state); @@ -138,7 +148,7 @@ static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev) * This function is called during interrupt context to notify link up state * change. */ -void +static void vxge_callback_link_up(struct __vxge_hw_device *hldev) { struct net_device *dev = hldev->ndev; @@ -162,7 +172,7 @@ vxge_callback_link_up(struct __vxge_hw_device *hldev) * This function is called during interrupt context to notify link down state * change. */ -void +static void vxge_callback_link_down(struct __vxge_hw_device *hldev) { struct net_device *dev = hldev->ndev; @@ -354,7 +364,7 @@ static inline void vxge_post(int *dtr_cnt, void **first_dtr, * If the interrupt is because of a received frame or if the receive ring * contains fresh as yet un-processed frames, this function is called. */ -enum vxge_hw_status +static enum vxge_hw_status vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr, u8 t_code, void *userdata) { @@ -531,7 +541,7 @@ vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr, * freed and frees all skbs whose data have already DMA'ed into the NICs * internal memory. */ -enum vxge_hw_status +static enum vxge_hw_status vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr, enum vxge_hw_fifo_tcode t_code, void *userdata, struct sk_buff ***skb_ptr, int nr_skb, int *more) @@ -1246,7 +1256,7 @@ static int vxge_set_mac_addr(struct net_device *dev, void *p) * * Enables the interrupts for the vpath */ -void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id) +static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id) { struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; int msix_id = 0; @@ -1279,7 +1289,7 @@ void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id) * * Disables the interrupts for the vpath */ -void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id) +static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id) { struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; int msix_id; @@ -1553,7 +1563,7 @@ out: * * driver may reset the chip on events of serr, eccerr, etc */ -int vxge_reset(struct vxgedev *vdev) +static int vxge_reset(struct vxgedev *vdev) { return do_vxge_reset(vdev, VXGE_LL_FULL_RESET); } @@ -1724,7 +1734,7 @@ static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev) return status; } -int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac) +static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac) { struct vxge_mac_addrs *new_mac_entry; u8 *mac_address = NULL; @@ -1757,7 +1767,8 @@ int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac) } /* Add a mac address to DA table */ -enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac) +static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, + struct macInfo *mac) { enum vxge_hw_status status = VXGE_HW_OK; struct vxge_vpath *vpath; @@ -1782,7 +1793,7 @@ enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac) return status; } -int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac) +static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac) { struct list_head *entry, *next; u64 del_mac = 0; @@ -1807,7 +1818,8 @@ int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac) return FALSE; } /* delete a mac address from DA table */ -enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac) +static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, + struct macInfo *mac) { enum vxge_hw_status status = VXGE_HW_OK; struct vxge_vpath *vpath; @@ -1854,7 +1866,7 @@ static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, } /* Store all vlan ids from the list to the vid table */ -enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath) +static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath) { enum vxge_hw_status status = VXGE_HW_OK; struct vxgedev *vdev = vpath->vdev; @@ -1874,7 +1886,7 @@ enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath) } /* Store all mac addresses from the list to the DA table */ -enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath) +static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath) { enum vxge_hw_status status = VXGE_HW_OK; struct macInfo mac_info; @@ -1916,7 +1928,7 @@ enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath) } /* reset vpaths */ -enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev) +static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev) { enum vxge_hw_status status = VXGE_HW_OK; struct vxge_vpath *vpath; @@ -1948,7 +1960,7 @@ enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev) } /* close vpaths */ -void vxge_close_vpaths(struct vxgedev *vdev, int index) +static void vxge_close_vpaths(struct vxgedev *vdev, int index) { struct vxge_vpath *vpath; int i; @@ -1966,7 +1978,7 @@ void vxge_close_vpaths(struct vxgedev *vdev, int index) } /* open vpaths */ -int vxge_open_vpaths(struct vxgedev *vdev) +static int vxge_open_vpaths(struct vxgedev *vdev) { struct vxge_hw_vpath_attr attr; enum vxge_hw_status status; @@ -2517,7 +2529,7 @@ static void vxge_poll_vp_lockup(unsigned long data) * Return value: '0' on success and an appropriate (-)ve integer as * defined in errno.h file on failure. */ -int +static int vxge_open(struct net_device *dev) { enum vxge_hw_status status; @@ -2721,7 +2733,7 @@ out0: } /* Loop throught the mac address list and delete all the entries */ -void vxge_free_mac_add_list(struct vxge_vpath *vpath) +static void vxge_free_mac_add_list(struct vxge_vpath *vpath) { struct list_head *entry, *next; @@ -2745,7 +2757,7 @@ static void vxge_napi_del_all(struct vxgedev *vdev) } } -int do_vxge_close(struct net_device *dev, int do_io) +static int do_vxge_close(struct net_device *dev, int do_io) { enum vxge_hw_status status; struct vxgedev *vdev; @@ -2856,7 +2868,7 @@ int do_vxge_close(struct net_device *dev, int do_io) * Return value: '0' on success and an appropriate (-)ve integer as * defined in errno.h file on failure. */ -int +static int vxge_close(struct net_device *dev) { do_vxge_close(dev, 1); @@ -3113,10 +3125,10 @@ static const struct net_device_ops vxge_netdev_ops = { #endif }; -int __devinit vxge_device_register(struct __vxge_hw_device *hldev, - struct vxge_config *config, - int high_dma, int no_of_vpath, - struct vxgedev **vdev_out) +static int __devinit vxge_device_register(struct __vxge_hw_device *hldev, + struct vxge_config *config, + int high_dma, int no_of_vpath, + struct vxgedev **vdev_out) { struct net_device *ndev; enum vxge_hw_status status = VXGE_HW_OK; @@ -3164,7 +3176,7 @@ int __devinit vxge_device_register(struct __vxge_hw_device *hldev, ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT; - initialize_ethtool_ops(ndev); + vxge_initialize_ethtool_ops(ndev); /* Allocate memory for vpath */ vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) * @@ -3249,7 +3261,7 @@ _out0: * * This function will unregister and free network device */ -void +static void vxge_device_unregister(struct __vxge_hw_device *hldev) { struct vxgedev *vdev; diff --git a/drivers/net/vxge/vxge-main.h b/drivers/net/vxge/vxge-main.h index d4be07eaacd..de64536cb7d 100644 --- a/drivers/net/vxge/vxge-main.h +++ b/drivers/net/vxge/vxge-main.h @@ -396,64 +396,7 @@ struct vxge_tx_priv { mod_timer(&timer, (jiffies + exp)); \ } while (0); -int __devinit vxge_device_register(struct __vxge_hw_device *devh, - struct vxge_config *config, - int high_dma, int no_of_vpath, - struct vxgedev **vdev); - -void vxge_device_unregister(struct __vxge_hw_device *devh); - -void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id); - -void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id); - -void vxge_callback_link_up(struct __vxge_hw_device *devh); - -void vxge_callback_link_down(struct __vxge_hw_device *devh); - -enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, - struct macInfo *mac); - -int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac); - -int vxge_reset(struct vxgedev *vdev); - -enum vxge_hw_status -vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr, - u8 t_code, void *userdata); - -enum vxge_hw_status -vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr, - enum vxge_hw_fifo_tcode t_code, void *userdata, - struct sk_buff ***skb_ptr, int nr_skbs, int *more); - -int vxge_close(struct net_device *dev); - -int vxge_open(struct net_device *dev); - -void vxge_close_vpaths(struct vxgedev *vdev, int index); - -int vxge_open_vpaths(struct vxgedev *vdev); - -enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev); - -enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, - struct macInfo *mac); - -enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, - struct macInfo *mac); - -int vxge_mac_list_add(struct vxge_vpath *vpath, - struct macInfo *mac); - -void vxge_free_mac_add_list(struct vxge_vpath *vpath); - -enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath); - -enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath); - -int do_vxge_close(struct net_device *dev, int do_io); -extern void initialize_ethtool_ops(struct net_device *ndev); +extern void vxge_initialize_ethtool_ops(struct net_device *ndev); /** * #define VXGE_DEBUG_INIT: debug for initialization functions * #define VXGE_DEBUG_TX : debug transmit related functions diff --git a/drivers/net/vxge/vxge-traffic.c b/drivers/net/vxge/vxge-traffic.c index cedf08f99cb..4bdb611a684 100644 --- a/drivers/net/vxge/vxge-traffic.c +++ b/drivers/net/vxge/vxge-traffic.c @@ -17,6 +17,13 @@ #include "vxge-config.h" #include "vxge-main.h" +static enum vxge_hw_status +__vxge_hw_device_handle_error(struct __vxge_hw_device *hldev, + u32 vp_id, enum vxge_hw_event type); +static enum vxge_hw_status +__vxge_hw_vpath_alarm_process(struct __vxge_hw_virtualpath *vpath, + u32 skip_alarms); + /* * vxge_hw_vpath_intr_enable - Enable vpath interrupts. * @vp: Virtual Path handle. @@ -513,7 +520,7 @@ exit: * Link up indication handler. The function is invoked by HW when * Titan indicates that the link is up for programmable amount of time. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_device_handle_link_up_ind(struct __vxge_hw_device *hldev) { /* @@ -538,7 +545,7 @@ exit: * Link down indication handler. The function is invoked by HW when * Titan indicates that the link is down. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_device_handle_link_down_ind(struct __vxge_hw_device *hldev) { /* @@ -564,7 +571,7 @@ exit: * * Handle error. */ -enum vxge_hw_status +static enum vxge_hw_status __vxge_hw_device_handle_error( struct __vxge_hw_device *hldev, u32 vp_id, @@ -646,7 +653,7 @@ void vxge_hw_device_clear_tx_rx(struct __vxge_hw_device *hldev) * it swaps the reserve and free arrays. * */ -enum vxge_hw_status +static enum vxge_hw_status vxge_hw_channel_dtr_alloc(struct __vxge_hw_channel *channel, void **dtrh) { void **tmp_arr; @@ -692,7 +699,8 @@ _alloc_after_swap: * Posts a dtr to work array. * */ -void vxge_hw_channel_dtr_post(struct __vxge_hw_channel *channel, void *dtrh) +static void vxge_hw_channel_dtr_post(struct __vxge_hw_channel *channel, + void *dtrh) { vxge_assert(channel->work_arr[channel->post_index] == NULL); @@ -1657,37 +1665,6 @@ exit: return status; } -/** - * vxge_hw_vpath_vid_get_next - Get the next vid entry for this vpath - * from vlan id table. - * @vp: Vpath handle. - * @vid: Buffer to return vlan id - * - * Returns the next vlan id in the list for this vpath. - * see also: vxge_hw_vpath_vid_get - * - */ -enum vxge_hw_status -vxge_hw_vpath_vid_get_next(struct __vxge_hw_vpath_handle *vp, u64 *vid) -{ - u64 data; - enum vxge_hw_status status = VXGE_HW_OK; - - if (vp == NULL) { - status = VXGE_HW_ERR_INVALID_HANDLE; - goto exit; - } - - status = __vxge_hw_vpath_rts_table_get(vp, - VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_LIST_NEXT_ENTRY, - VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_VID, - 0, vid, &data); - - *vid = VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_VLAN_ID(*vid); -exit: - return status; -} - /** * vxge_hw_vpath_vid_delete - Delete the vlan id entry for this vpath * to vlan id table. @@ -1898,9 +1875,9 @@ exit: * Process vpath alarms. * */ -enum vxge_hw_status __vxge_hw_vpath_alarm_process( - struct __vxge_hw_virtualpath *vpath, - u32 skip_alarms) +static enum vxge_hw_status +__vxge_hw_vpath_alarm_process(struct __vxge_hw_virtualpath *vpath, + u32 skip_alarms) { u64 val64; u64 alarm_status; @@ -2264,36 +2241,6 @@ vxge_hw_vpath_msix_mask(struct __vxge_hw_vpath_handle *vp, int msix_id) &hldev->common_reg->set_msix_mask_vect[msix_id % 4]); } -/** - * vxge_hw_vpath_msix_clear - Clear MSIX Vector. - * @vp: Virtual Path handle. - * @msix_id: MSI ID - * - * The function clears the msix interrupt for the given msix_id - * - * Returns: 0, - * Otherwise, VXGE_HW_ERR_WRONG_IRQ if the msix index is out of range - * status. - * See also: - */ -void -vxge_hw_vpath_msix_clear(struct __vxge_hw_vpath_handle *vp, int msix_id) -{ - struct __vxge_hw_device *hldev = vp->vpath->hldev; - if (hldev->config.intr_mode == - VXGE_HW_INTR_MODE_MSIX_ONE_SHOT) { - __vxge_hw_pio_mem_write32_upper( - (u32)vxge_bVALn(vxge_mBIT(msix_id >> 2), 0, 32), - &hldev->common_reg-> - clr_msix_one_shot_vec[msix_id%4]); - } else { - __vxge_hw_pio_mem_write32_upper( - (u32)vxge_bVALn(vxge_mBIT(msix_id >> 2), 0, 32), - &hldev->common_reg-> - clear_msix_mask_vect[msix_id%4]); - } -} - /** * vxge_hw_vpath_msix_unmask - Unmask the MSIX Vector. * @vp: Virtual Path handle. @@ -2315,22 +2262,6 @@ vxge_hw_vpath_msix_unmask(struct __vxge_hw_vpath_handle *vp, int msix_id) &hldev->common_reg->clear_msix_mask_vect[msix_id%4]); } -/** - * vxge_hw_vpath_msix_mask_all - Mask all MSIX vectors for the vpath. - * @vp: Virtual Path handle. - * - * The function masks all msix interrupt for the given vpath - * - */ -void -vxge_hw_vpath_msix_mask_all(struct __vxge_hw_vpath_handle *vp) -{ - - __vxge_hw_pio_mem_write32_upper( - (u32)vxge_bVALn(vxge_mBIT(vp->vpath->vp_id), 0, 32), - &vp->vpath->hldev->common_reg->set_msix_mask_all_vect); -} - /** * vxge_hw_vpath_inta_mask_tx_rx - Mask Tx and Rx interrupts. * @vp: Virtual Path handle. diff --git a/drivers/net/vxge/vxge-traffic.h b/drivers/net/vxge/vxge-traffic.h index 6fa07d13798..9890d4d596d 100644 --- a/drivers/net/vxge/vxge-traffic.h +++ b/drivers/net/vxge/vxge-traffic.h @@ -1748,14 +1748,6 @@ vxge_hw_mrpcim_stats_access( u32 offset, u64 *stat); -enum vxge_hw_status -vxge_hw_device_xmac_aggr_stats_get(struct __vxge_hw_device *devh, u32 port, - struct vxge_hw_xmac_aggr_stats *aggr_stats); - -enum vxge_hw_status -vxge_hw_device_xmac_port_stats_get(struct __vxge_hw_device *devh, u32 port, - struct vxge_hw_xmac_port_stats *port_stats); - enum vxge_hw_status vxge_hw_device_xmac_stats_get(struct __vxge_hw_device *devh, struct vxge_hw_xmac_stats *xmac_stats); @@ -2117,49 +2109,10 @@ struct __vxge_hw_ring_rxd_priv { #endif }; -/* ========================= RING PRIVATE API ============================= */ -u64 -__vxge_hw_ring_first_block_address_get( - struct __vxge_hw_ring *ringh); - -enum vxge_hw_status -__vxge_hw_ring_create( - struct __vxge_hw_vpath_handle *vpath_handle, - struct vxge_hw_ring_attr *attr); - -enum vxge_hw_status -__vxge_hw_ring_abort( - struct __vxge_hw_ring *ringh); - -enum vxge_hw_status -__vxge_hw_ring_reset( - struct __vxge_hw_ring *ringh); - -enum vxge_hw_status -__vxge_hw_ring_delete( - struct __vxge_hw_vpath_handle *vpath_handle); - /* ========================= FIFO PRIVATE API ============================= */ struct vxge_hw_fifo_attr; -enum vxge_hw_status -__vxge_hw_fifo_create( - struct __vxge_hw_vpath_handle *vpath_handle, - struct vxge_hw_fifo_attr *attr); - -enum vxge_hw_status -__vxge_hw_fifo_abort( - struct __vxge_hw_fifo *fifoh); - -enum vxge_hw_status -__vxge_hw_fifo_reset( - struct __vxge_hw_fifo *ringh); - -enum vxge_hw_status -__vxge_hw_fifo_delete( - struct __vxge_hw_vpath_handle *vpath_handle); - struct vxge_hw_mempool_cbs { void (*item_func_alloc)( struct vxge_hw_mempool *mempoolh, @@ -2169,10 +2122,6 @@ struct vxge_hw_mempool_cbs { u32 is_last); }; -void -__vxge_hw_mempool_destroy( - struct vxge_hw_mempool *mempool); - #define VXGE_HW_VIRTUAL_PATH_HANDLE(vpath) \ ((struct __vxge_hw_vpath_handle *)(vpath)->vpath_handles.next) @@ -2194,62 +2143,11 @@ __vxge_hw_vpath_rts_table_set( u64 data1, u64 data2); -enum vxge_hw_status -__vxge_hw_vpath_reset( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vpath_sw_reset( - struct __vxge_hw_device *devh, - u32 vp_id); - enum vxge_hw_status __vxge_hw_vpath_enable( struct __vxge_hw_device *devh, u32 vp_id); -void -__vxge_hw_vpath_prc_configure( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vpath_kdfc_configure( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vpath_mac_configure( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vpath_tim_configure( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vpath_initialize( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vp_initialize( - struct __vxge_hw_device *devh, - u32 vp_id, - struct vxge_hw_vp_config *config); - -void -__vxge_hw_vp_terminate( - struct __vxge_hw_device *devh, - u32 vp_id); - -enum vxge_hw_status -__vxge_hw_vpath_alarm_process( - struct __vxge_hw_virtualpath *vpath, - u32 skip_alarms); - void vxge_hw_device_intr_enable( struct __vxge_hw_device *devh); @@ -2320,11 +2218,6 @@ vxge_hw_vpath_vid_get( struct __vxge_hw_vpath_handle *vpath_handle, u64 *vid); -enum vxge_hw_status -vxge_hw_vpath_vid_get_next( - struct __vxge_hw_vpath_handle *vpath_handle, - u64 *vid); - enum vxge_hw_status vxge_hw_vpath_vid_delete( struct __vxge_hw_vpath_handle *vpath_handle, @@ -2386,17 +2279,10 @@ vxge_hw_vpath_msix_mask(struct __vxge_hw_vpath_handle *vpath_handle, void vxge_hw_device_flush_io(struct __vxge_hw_device *devh); -void -vxge_hw_vpath_msix_clear(struct __vxge_hw_vpath_handle *vpath_handle, - int msix_id); - void vxge_hw_vpath_msix_unmask(struct __vxge_hw_vpath_handle *vpath_handle, int msix_id); -void -vxge_hw_vpath_msix_mask_all(struct __vxge_hw_vpath_handle *vpath_handle); - enum vxge_hw_status vxge_hw_vpath_intr_enable( struct __vxge_hw_vpath_handle *vpath_handle); @@ -2415,12 +2301,6 @@ vxge_hw_channel_msix_mask(struct __vxge_hw_channel *channelh, int msix_id); void vxge_hw_channel_msix_unmask(struct __vxge_hw_channel *channelh, int msix_id); -enum vxge_hw_status -vxge_hw_channel_dtr_alloc(struct __vxge_hw_channel *channel, void **dtrh); - -void -vxge_hw_channel_dtr_post(struct __vxge_hw_channel *channel, void *dtrh); - void vxge_hw_channel_dtr_try_complete(struct __vxge_hw_channel *channel, void **dtrh); @@ -2436,18 +2316,4 @@ vxge_hw_channel_dtr_count(struct __vxge_hw_channel *channel); void vxge_hw_vpath_tti_ci_set(struct __vxge_hw_device *hldev, u32 vp_id); -/* ========================== PRIVATE API ================================= */ - -enum vxge_hw_status -__vxge_hw_device_handle_link_up_ind(struct __vxge_hw_device *hldev); - -enum vxge_hw_status -__vxge_hw_device_handle_link_down_ind(struct __vxge_hw_device *hldev); - -enum vxge_hw_status -__vxge_hw_device_handle_error( - struct __vxge_hw_device *hldev, - u32 vp_id, - enum vxge_hw_event type); - #endif -- cgit v1.2.3-70-g09d2 From ac409215faccd146e5c755f131d20310a5febe70 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:54 +0000 Subject: qlge: make local functions static Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/qlge/qlge.h | 2 -- drivers/net/qlge/qlge_main.c | 7 +++++-- drivers/net/qlge/qlge_mpi.c | 6 +++--- 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h index a478786840a..2b7a018593b 100644 --- a/drivers/net/qlge/qlge.h +++ b/drivers/net/qlge/qlge.h @@ -2226,7 +2226,6 @@ int ql_dump_risc_ram_area(struct ql_adapter *qdev, void *buf, int ql_core_dump(struct ql_adapter *qdev, struct ql_mpi_coredump *mpi_coredump); int ql_mb_about_fw(struct ql_adapter *qdev); -int ql_wol(struct ql_adapter *qdev); int ql_mb_wol_set_magic(struct ql_adapter *qdev, u32 enable_wol); int ql_mb_wol_mode(struct ql_adapter *qdev, u32 wol); int ql_mb_set_led_cfg(struct ql_adapter *qdev, u32 led_config); @@ -2243,7 +2242,6 @@ netdev_tx_t ql_lb_send(struct sk_buff *skb, struct net_device *ndev); void ql_check_lb_frame(struct ql_adapter *, struct sk_buff *); int ql_own_firmware(struct ql_adapter *qdev); int ql_clean_lb_rx_ring(struct rx_ring *rx_ring, int budget); -void qlge_set_multicast_list(struct net_device *ndev); #if 1 #define QL_ALL_DUMP diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c index ba0053d8515..e6210563abd 100644 --- a/drivers/net/qlge/qlge_main.c +++ b/drivers/net/qlge/qlge_main.c @@ -94,6 +94,9 @@ static DEFINE_PCI_DEVICE_TABLE(qlge_pci_tbl) = { MODULE_DEVICE_TABLE(pci, qlge_pci_tbl); +static int ql_wol(struct ql_adapter *qdev); +static void qlge_set_multicast_list(struct net_device *ndev); + /* This hardware semaphore causes exclusive access to * resources shared between the NIC driver, MPI firmware, * FCOE firmware and the FC driver. @@ -3842,7 +3845,7 @@ static void ql_display_dev_info(struct net_device *ndev) "MAC address %pM\n", ndev->dev_addr); } -int ql_wol(struct ql_adapter *qdev) +static int ql_wol(struct ql_adapter *qdev) { int status = 0; u32 wol = MB_WOL_DISABLE; @@ -4242,7 +4245,7 @@ static struct net_device_stats *qlge_get_stats(struct net_device return &ndev->stats; } -void qlge_set_multicast_list(struct net_device *ndev) +static void qlge_set_multicast_list(struct net_device *ndev) { struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev); struct netdev_hw_addr *ha; diff --git a/drivers/net/qlge/qlge_mpi.c b/drivers/net/qlge/qlge_mpi.c index f84e8570c7c..0e7c7c7ee16 100644 --- a/drivers/net/qlge/qlge_mpi.c +++ b/drivers/net/qlge/qlge_mpi.c @@ -87,7 +87,7 @@ exit: return status; } -int ql_soft_reset_mpi_risc(struct ql_adapter *qdev) +static int ql_soft_reset_mpi_risc(struct ql_adapter *qdev) { int status; status = ql_write_mpi_reg(qdev, 0x00001010, 1); @@ -681,7 +681,7 @@ int ql_mb_get_fw_state(struct ql_adapter *qdev) /* Send and ACK mailbox command to the firmware to * let it continue with the change. */ -int ql_mb_idc_ack(struct ql_adapter *qdev) +static int ql_mb_idc_ack(struct ql_adapter *qdev) { struct mbox_params mbc; struct mbox_params *mbcp = &mbc; @@ -744,7 +744,7 @@ int ql_mb_set_port_cfg(struct ql_adapter *qdev) return status; } -int ql_mb_dump_ram(struct ql_adapter *qdev, u64 req_dma, u32 addr, +static int ql_mb_dump_ram(struct ql_adapter *qdev, u64 req_dma, u32 addr, u32 size) { int status = 0; -- cgit v1.2.3-70-g09d2 From fa274cb7e56555e7017050e922b4f14637baa023 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:55 +0000 Subject: qlge: disable unsed dump code The driver has lots of unused code to dump data structures to console. Use existing simple way to remove the code with ifdef. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/qlge/qlge.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h index 2b7a018593b..22821398fc6 100644 --- a/drivers/net/qlge/qlge.h +++ b/drivers/net/qlge/qlge.h @@ -2243,14 +2243,12 @@ void ql_check_lb_frame(struct ql_adapter *, struct sk_buff *); int ql_own_firmware(struct ql_adapter *qdev); int ql_clean_lb_rx_ring(struct rx_ring *rx_ring, int budget); -#if 1 -#define QL_ALL_DUMP -#define QL_REG_DUMP -#define QL_DEV_DUMP -#define QL_CB_DUMP +/* #define QL_ALL_DUMP */ +/* #define QL_REG_DUMP */ +/* #define QL_DEV_DUMP */ +/* #define QL_CB_DUMP */ /* #define QL_IB_DUMP */ /* #define QL_OB_DUMP */ -#endif #ifdef QL_REG_DUMP extern void ql_dump_xgmac_control_regs(struct ql_adapter *qdev); -- cgit v1.2.3-70-g09d2 From 8d96286ae13a0bf4ec04341c9b25694adff38623 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:56 +0000 Subject: bnx2x: make local function static and remove dead code Make many functions that are only used in one file static. Remove dead code for override_led_value. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/bnx2x/bnx2x.h | 5 -- drivers/net/bnx2x/bnx2x_cmn.c | 3 +- drivers/net/bnx2x/bnx2x_cmn.h | 55 --------------- drivers/net/bnx2x/bnx2x_init_ops.h | 34 +++++---- drivers/net/bnx2x/bnx2x_link.c | 137 +++---------------------------------- drivers/net/bnx2x/bnx2x_link.h | 15 ---- drivers/net/bnx2x/bnx2x_main.c | 55 ++++++++------- 7 files changed, 62 insertions(+), 242 deletions(-) diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h index 9571ecf48f3..9eea225deca 100644 --- a/drivers/net/bnx2x/bnx2x.h +++ b/drivers/net/bnx2x/bnx2x.h @@ -1288,15 +1288,11 @@ struct bnx2x_func_init_params { #define WAIT_RAMROD_POLL 0x01 #define WAIT_RAMROD_COMMON 0x02 -int bnx2x_wait_ramrod(struct bnx2x *bp, int state, int idx, - int *state_p, int flags); /* dmae */ void bnx2x_read_dmae(struct bnx2x *bp, u32 src_addr, u32 len32); void bnx2x_write_dmae(struct bnx2x *bp, dma_addr_t dma_addr, u32 dst_addr, u32 len32); -void bnx2x_write_dmae_phys_len(struct bnx2x *bp, dma_addr_t phys_addr, - u32 addr, u32 len); void bnx2x_post_dmae(struct bnx2x *bp, struct dmae_command *dmae, int idx); u32 bnx2x_dmae_opcode_add_comp(u32 opcode, u8 comp_type); u32 bnx2x_dmae_opcode_clr_src_reset(u32 opcode); @@ -1307,7 +1303,6 @@ int bnx2x_get_gpio(struct bnx2x *bp, int gpio_num, u8 port); int bnx2x_set_gpio(struct bnx2x *bp, int gpio_num, u32 mode, u8 port); int bnx2x_set_gpio_int(struct bnx2x *bp, int gpio_num, u32 mode, u8 port); u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param); -void bnx2x_reg_wr_ind(struct bnx2x *bp, u32 addr, u32 val); void bnx2x_calc_fc_adv(struct bnx2x *bp); int bnx2x_sp_post(struct bnx2x *bp, int command, int cid, diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c index bc583751407..459614d2d7b 100644 --- a/drivers/net/bnx2x/bnx2x_cmn.c +++ b/drivers/net/bnx2x/bnx2x_cmn.c @@ -25,6 +25,7 @@ #include "bnx2x_init.h" +static int bnx2x_setup_irqs(struct bnx2x *bp); /* free skb in the packet ring at pos idx * return idx of last bd freed @@ -2187,7 +2188,7 @@ int bnx2x_change_mac_addr(struct net_device *dev, void *p) } -int bnx2x_setup_irqs(struct bnx2x *bp) +static int bnx2x_setup_irqs(struct bnx2x *bp) { int rc = 0; if (bp->flags & USING_MSIX_FLAG) { diff --git a/drivers/net/bnx2x/bnx2x_cmn.h b/drivers/net/bnx2x/bnx2x_cmn.h index 5bfe0ab1d2d..6b28739c530 100644 --- a/drivers/net/bnx2x/bnx2x_cmn.h +++ b/drivers/net/bnx2x/bnx2x_cmn.h @@ -116,13 +116,6 @@ void bnx2x_setup_cnic_irq_info(struct bnx2x *bp); */ void bnx2x_int_enable(struct bnx2x *bp); -/** - * Disable HW interrupts. - * - * @param bp - */ -void bnx2x_int_disable(struct bnx2x *bp); - /** * Disable interrupts. This function ensures that there are no * ISRs or SP DPCs (sp_task) are running after it returns. @@ -191,17 +184,6 @@ void bnx2x_free_mem(struct bnx2x *bp); int bnx2x_setup_client(struct bnx2x *bp, struct bnx2x_fastpath *fp, int is_leading); -/** - * Bring down an eth client. - * - * @param bp - * @param p - * - * @return int - */ -int bnx2x_stop_fw_client(struct bnx2x *bp, - struct bnx2x_client_ramrod_params *p); - /** * Set number of queues according to mode * @@ -250,34 +232,6 @@ int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource); */ void bnx2x_set_eth_mac(struct bnx2x *bp, int set); -#ifdef BCM_CNIC -/** - * Set iSCSI MAC(s) at the next enties in the CAM after the ETH - * MAC(s). The function will wait until the ramrod completion - * returns. - * - * @param bp driver handle - * @param set set or clear the CAM entry - * - * @return 0 if cussess, -ENODEV if ramrod doesn't return. - */ -int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set); -#endif - -/** - * Initialize status block in FW and HW - * - * @param bp driver handle - * @param dma_addr_t mapping - * @param int sb_id - * @param int vfid - * @param u8 vf_valid - * @param int fw_sb_id - * @param int igu_sb_id - */ -void bnx2x_init_sb(struct bnx2x *bp, dma_addr_t mapping, int vfid, - u8 vf_valid, int fw_sb_id, int igu_sb_id); - /** * Set MAC filtering configurations. * @@ -326,7 +280,6 @@ void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe); * @return int */ int bnx2x_func_start(struct bnx2x *bp); -int bnx2x_func_stop(struct bnx2x *bp); /** * Prepare ILT configurations according to current driver @@ -395,14 +348,6 @@ int bnx2x_enable_msix(struct bnx2x *bp); */ int bnx2x_enable_msi(struct bnx2x *bp); -/** - * Request IRQ vectors from OS. - * - * @param bp - * - * @return int - */ -int bnx2x_setup_irqs(struct bnx2x *bp); /** * NAPI callback * diff --git a/drivers/net/bnx2x/bnx2x_init_ops.h b/drivers/net/bnx2x/bnx2x_init_ops.h index e65de784182..a306b0e46b6 100644 --- a/drivers/net/bnx2x/bnx2x_init_ops.h +++ b/drivers/net/bnx2x/bnx2x_init_ops.h @@ -16,7 +16,9 @@ #define BNX2X_INIT_OPS_H static int bnx2x_gunzip(struct bnx2x *bp, const u8 *zbuf, int len); - +static void bnx2x_reg_wr_ind(struct bnx2x *bp, u32 addr, u32 val); +static void bnx2x_write_dmae_phys_len(struct bnx2x *bp, dma_addr_t phys_addr, + u32 addr, u32 len); static void bnx2x_init_str_wr(struct bnx2x *bp, u32 addr, const u32 *data, u32 len) @@ -589,7 +591,7 @@ static int bnx2x_ilt_client_mem_op(struct bnx2x *bp, int cli_num, u8 memop) return rc; } -int bnx2x_ilt_mem_op(struct bnx2x *bp, u8 memop) +static int bnx2x_ilt_mem_op(struct bnx2x *bp, u8 memop) { int rc = bnx2x_ilt_client_mem_op(bp, ILT_CLIENT_CDU, memop); if (!rc) @@ -635,7 +637,7 @@ static void bnx2x_ilt_line_init_op(struct bnx2x *bp, struct bnx2x_ilt *ilt, } } -void bnx2x_ilt_boundry_init_op(struct bnx2x *bp, +static void bnx2x_ilt_boundry_init_op(struct bnx2x *bp, struct ilt_client_info *ilt_cli, u32 ilt_start, u8 initop) { @@ -688,8 +690,10 @@ void bnx2x_ilt_boundry_init_op(struct bnx2x *bp, } } -void bnx2x_ilt_client_init_op_ilt(struct bnx2x *bp, struct bnx2x_ilt *ilt, - struct ilt_client_info *ilt_cli, u8 initop) +static void bnx2x_ilt_client_init_op_ilt(struct bnx2x *bp, + struct bnx2x_ilt *ilt, + struct ilt_client_info *ilt_cli, + u8 initop) { int i; @@ -703,8 +707,8 @@ void bnx2x_ilt_client_init_op_ilt(struct bnx2x *bp, struct bnx2x_ilt *ilt, bnx2x_ilt_boundry_init_op(bp, ilt_cli, ilt->start_line, initop); } -void bnx2x_ilt_client_init_op(struct bnx2x *bp, - struct ilt_client_info *ilt_cli, u8 initop) +static void bnx2x_ilt_client_init_op(struct bnx2x *bp, + struct ilt_client_info *ilt_cli, u8 initop) { struct bnx2x_ilt *ilt = BP_ILT(bp); @@ -720,7 +724,7 @@ static void bnx2x_ilt_client_id_init_op(struct bnx2x *bp, bnx2x_ilt_client_init_op(bp, ilt_cli, initop); } -void bnx2x_ilt_init_op(struct bnx2x *bp, u8 initop) +static void bnx2x_ilt_init_op(struct bnx2x *bp, u8 initop) { bnx2x_ilt_client_id_init_op(bp, ILT_CLIENT_CDU, initop); bnx2x_ilt_client_id_init_op(bp, ILT_CLIENT_QM, initop); @@ -752,7 +756,7 @@ static void bnx2x_ilt_init_client_psz(struct bnx2x *bp, int cli_num, * called during init common stage, ilt clients should be initialized * prioir to calling this function */ -void bnx2x_ilt_init_page_size(struct bnx2x *bp, u8 initop) +static void bnx2x_ilt_init_page_size(struct bnx2x *bp, u8 initop) { bnx2x_ilt_init_client_psz(bp, ILT_CLIENT_CDU, PXP2_REG_RQ_CDU_P_SIZE, initop); @@ -772,8 +776,8 @@ void bnx2x_ilt_init_page_size(struct bnx2x *bp, u8 initop) #define QM_INIT(cid_cnt) (cid_cnt > QM_INIT_MIN_CID_COUNT) /* called during init port stage */ -void bnx2x_qm_init_cid_count(struct bnx2x *bp, int qm_cid_count, - u8 initop) +static void bnx2x_qm_init_cid_count(struct bnx2x *bp, int qm_cid_count, + u8 initop) { int port = BP_PORT(bp); @@ -814,8 +818,8 @@ static void bnx2x_qm_set_ptr_table(struct bnx2x *bp, int qm_cid_count) } /* called during init common stage */ -void bnx2x_qm_init_ptr_table(struct bnx2x *bp, int qm_cid_count, - u8 initop) +static void bnx2x_qm_init_ptr_table(struct bnx2x *bp, int qm_cid_count, + u8 initop) { if (!QM_INIT(qm_cid_count)) return; @@ -836,8 +840,8 @@ void bnx2x_qm_init_ptr_table(struct bnx2x *bp, int qm_cid_count, ****************************************************************************/ /* called during init func stage */ -void bnx2x_src_init_t2(struct bnx2x *bp, struct src_ent *t2, - dma_addr_t t2_mapping, int src_cid_count) +static void bnx2x_src_init_t2(struct bnx2x *bp, struct src_ent *t2, + dma_addr_t t2_mapping, int src_cid_count) { int i; int port = BP_PORT(bp); diff --git a/drivers/net/bnx2x/bnx2x_link.c b/drivers/net/bnx2x/bnx2x_link.c index 3e99bf9c42b..2326774df84 100644 --- a/drivers/net/bnx2x/bnx2x_link.c +++ b/drivers/net/bnx2x/bnx2x_link.c @@ -181,6 +181,12 @@ (_bank + (_addr & 0xf)), \ _val) +static u8 bnx2x_cl45_read(struct bnx2x *bp, struct bnx2x_phy *phy, + u8 devad, u16 reg, u16 *ret_val); + +static u8 bnx2x_cl45_write(struct bnx2x *bp, struct bnx2x_phy *phy, + u8 devad, u16 reg, u16 val); + static u32 bnx2x_bits_en(struct bnx2x *bp, u32 reg, u32 bits) { u32 val = REG_RD(bp, reg); @@ -594,7 +600,7 @@ static u8 bnx2x_bmac2_enable(struct link_params *params, return 0; } -u8 bnx2x_bmac_enable(struct link_params *params, +static u8 bnx2x_bmac_enable(struct link_params *params, struct link_vars *vars, u8 is_lb) { @@ -2537,122 +2543,6 @@ static void bnx2x_set_xgxs_loopback(struct bnx2x_phy *phy, } } -/* - *------------------------------------------------------------------------ - * bnx2x_override_led_value - - * - * Override the led value of the requested led - * - *------------------------------------------------------------------------ - */ -u8 bnx2x_override_led_value(struct bnx2x *bp, u8 port, - u32 led_idx, u32 value) -{ - u32 reg_val; - - /* If port 0 then use EMAC0, else use EMAC1*/ - u32 emac_base = (port) ? GRCBASE_EMAC1 : GRCBASE_EMAC0; - - DP(NETIF_MSG_LINK, - "bnx2x_override_led_value() port %x led_idx %d value %d\n", - port, led_idx, value); - - switch (led_idx) { - case 0: /* 10MB led */ - /* Read the current value of the LED register in - the EMAC block */ - reg_val = REG_RD(bp, emac_base + EMAC_REG_EMAC_LED); - /* Set the OVERRIDE bit to 1 */ - reg_val |= EMAC_LED_OVERRIDE; - /* If value is 1, set the 10M_OVERRIDE bit, - otherwise reset it.*/ - reg_val = (value == 1) ? (reg_val | EMAC_LED_10MB_OVERRIDE) : - (reg_val & ~EMAC_LED_10MB_OVERRIDE); - REG_WR(bp, emac_base + EMAC_REG_EMAC_LED, reg_val); - break; - case 1: /*100MB led */ - /*Read the current value of the LED register in - the EMAC block */ - reg_val = REG_RD(bp, emac_base + EMAC_REG_EMAC_LED); - /* Set the OVERRIDE bit to 1 */ - reg_val |= EMAC_LED_OVERRIDE; - /* If value is 1, set the 100M_OVERRIDE bit, - otherwise reset it.*/ - reg_val = (value == 1) ? (reg_val | EMAC_LED_100MB_OVERRIDE) : - (reg_val & ~EMAC_LED_100MB_OVERRIDE); - REG_WR(bp, emac_base + EMAC_REG_EMAC_LED, reg_val); - break; - case 2: /* 1000MB led */ - /* Read the current value of the LED register in the - EMAC block */ - reg_val = REG_RD(bp, emac_base + EMAC_REG_EMAC_LED); - /* Set the OVERRIDE bit to 1 */ - reg_val |= EMAC_LED_OVERRIDE; - /* If value is 1, set the 1000M_OVERRIDE bit, otherwise - reset it. */ - reg_val = (value == 1) ? (reg_val | EMAC_LED_1000MB_OVERRIDE) : - (reg_val & ~EMAC_LED_1000MB_OVERRIDE); - REG_WR(bp, emac_base + EMAC_REG_EMAC_LED, reg_val); - break; - case 3: /* 2500MB led */ - /* Read the current value of the LED register in the - EMAC block*/ - reg_val = REG_RD(bp, emac_base + EMAC_REG_EMAC_LED); - /* Set the OVERRIDE bit to 1 */ - reg_val |= EMAC_LED_OVERRIDE; - /* If value is 1, set the 2500M_OVERRIDE bit, otherwise - reset it.*/ - reg_val = (value == 1) ? (reg_val | EMAC_LED_2500MB_OVERRIDE) : - (reg_val & ~EMAC_LED_2500MB_OVERRIDE); - REG_WR(bp, emac_base + EMAC_REG_EMAC_LED, reg_val); - break; - case 4: /*10G led */ - if (port == 0) { - REG_WR(bp, NIG_REG_LED_10G_P0, - value); - } else { - REG_WR(bp, NIG_REG_LED_10G_P1, - value); - } - break; - case 5: /* TRAFFIC led */ - /* Find if the traffic control is via BMAC or EMAC */ - if (port == 0) - reg_val = REG_RD(bp, NIG_REG_NIG_EMAC0_EN); - else - reg_val = REG_RD(bp, NIG_REG_NIG_EMAC1_EN); - - /* Override the traffic led in the EMAC:*/ - if (reg_val == 1) { - /* Read the current value of the LED register in - the EMAC block */ - reg_val = REG_RD(bp, emac_base + - EMAC_REG_EMAC_LED); - /* Set the TRAFFIC_OVERRIDE bit to 1 */ - reg_val |= EMAC_LED_OVERRIDE; - /* If value is 1, set the TRAFFIC bit, otherwise - reset it.*/ - reg_val = (value == 1) ? (reg_val | EMAC_LED_TRAFFIC) : - (reg_val & ~EMAC_LED_TRAFFIC); - REG_WR(bp, emac_base + EMAC_REG_EMAC_LED, reg_val); - } else { /* Override the traffic led in the BMAC: */ - REG_WR(bp, NIG_REG_LED_CONTROL_OVERRIDE_TRAFFIC_P0 - + port*4, 1); - REG_WR(bp, NIG_REG_LED_CONTROL_TRAFFIC_P0 + port*4, - value); - } - break; - default: - DP(NETIF_MSG_LINK, - "bnx2x_override_led_value() unknown led index %d " - "(should be 0-5)\n", led_idx); - return -EINVAL; - } - - return 0; -} - - u8 bnx2x_set_led(struct link_params *params, struct link_vars *vars, u8 mode, u32 speed) { @@ -4099,9 +3989,9 @@ static u8 bnx2x_8727_read_sfp_module_eeprom(struct bnx2x_phy *phy, return -EINVAL; } -u8 bnx2x_read_sfp_module_eeprom(struct bnx2x_phy *phy, - struct link_params *params, u16 addr, - u8 byte_cnt, u8 *o_buf) +static u8 bnx2x_read_sfp_module_eeprom(struct bnx2x_phy *phy, + struct link_params *params, u16 addr, + u8 byte_cnt, u8 *o_buf) { if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8726) return bnx2x_8726_read_sfp_module_eeprom(phy, params, addr, @@ -6819,13 +6709,6 @@ u8 bnx2x_phy_probe(struct link_params *params) return 0; } -u32 bnx2x_supported_attr(struct link_params *params, u8 phy_idx) -{ - if (phy_idx < params->num_phys) - return params->phy[phy_idx].supported; - return 0; -} - static void set_phy_vars(struct link_params *params) { struct bnx2x *bp = params->bp; diff --git a/drivers/net/bnx2x/bnx2x_link.h b/drivers/net/bnx2x/bnx2x_link.h index 58a4c719927..171abf8097e 100644 --- a/drivers/net/bnx2x/bnx2x_link.h +++ b/drivers/net/bnx2x/bnx2x_link.h @@ -279,12 +279,6 @@ u8 bnx2x_phy_read(struct link_params *params, u8 phy_addr, u8 bnx2x_phy_write(struct link_params *params, u8 phy_addr, u8 devad, u16 reg, u16 val); - -u8 bnx2x_cl45_read(struct bnx2x *bp, struct bnx2x_phy *phy, - u8 devad, u16 reg, u16 *ret_val); - -u8 bnx2x_cl45_write(struct bnx2x *bp, struct bnx2x_phy *phy, - u8 devad, u16 reg, u16 val); /* Reads the link_status from the shmem, and update the link vars accordingly */ void bnx2x_link_status_update(struct link_params *input, @@ -304,8 +298,6 @@ u8 bnx2x_set_led(struct link_params *params, struct link_vars *vars, #define LED_MODE_OPER 2 #define LED_MODE_FRONT_PANEL_OFF 3 -u8 bnx2x_override_led_value(struct bnx2x *bp, u8 port, u32 led_idx, u32 value); - /* bnx2x_handle_module_detect_int should be called upon module detection interrupt */ void bnx2x_handle_module_detect_int(struct link_params *params); @@ -325,19 +317,12 @@ void bnx2x_ext_phy_hw_reset(struct bnx2x *bp, u8 port); /* Reset the external of SFX7101 */ void bnx2x_sfx7101_sp_sw_reset(struct bnx2x *bp, struct bnx2x_phy *phy); -u8 bnx2x_read_sfp_module_eeprom(struct bnx2x_phy *phy, - struct link_params *params, u16 addr, - u8 byte_cnt, u8 *o_buf); - void bnx2x_hw_reset_phy(struct link_params *params); /* Checks if HW lock is required for this phy/board type */ u8 bnx2x_hw_lock_required(struct bnx2x *bp, u32 shmem_base, u32 shmem2_base); -/* Returns the aggregative supported attributes of the phys on board */ -u32 bnx2x_supported_attr(struct link_params *params, u8 phy_idx); - /* Check swap bit and adjust PHY order */ u32 bnx2x_phy_selection(struct link_params *params); diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c index ff99a2fc042..e9ad16f00b5 100644 --- a/drivers/net/bnx2x/bnx2x_main.c +++ b/drivers/net/bnx2x/bnx2x_main.c @@ -403,7 +403,7 @@ static inline void storm_memset_hc_disable(struct bnx2x *bp, u8 port, /* used only at init * locking is done by mcp */ -void bnx2x_reg_wr_ind(struct bnx2x *bp, u32 addr, u32 val) +static void bnx2x_reg_wr_ind(struct bnx2x *bp, u32 addr, u32 val) { pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS, addr); pci_write_config_dword(bp->pdev, PCICFG_GRC_DATA, val); @@ -429,7 +429,8 @@ static u32 bnx2x_reg_rd_ind(struct bnx2x *bp, u32 addr) #define DMAE_DP_DST_PCI "pci dst_addr [%x:%08x]" #define DMAE_DP_DST_NONE "dst_addr [none]" -void bnx2x_dp_dmae(struct bnx2x *bp, struct dmae_command *dmae, int msglvl) +static void bnx2x_dp_dmae(struct bnx2x *bp, struct dmae_command *dmae, + int msglvl) { u32 src_type = dmae->opcode & DMAE_COMMAND_SRC; @@ -551,8 +552,9 @@ u32 bnx2x_dmae_opcode(struct bnx2x *bp, u8 src_type, u8 dst_type, return opcode; } -void bnx2x_prep_dmae_with_comp(struct bnx2x *bp, struct dmae_command *dmae, - u8 src_type, u8 dst_type) +static void bnx2x_prep_dmae_with_comp(struct bnx2x *bp, + struct dmae_command *dmae, + u8 src_type, u8 dst_type) { memset(dmae, 0, sizeof(struct dmae_command)); @@ -567,7 +569,8 @@ void bnx2x_prep_dmae_with_comp(struct bnx2x *bp, struct dmae_command *dmae, } /* issue a dmae command over the init-channel and wailt for completion */ -int bnx2x_issue_dmae_with_comp(struct bnx2x *bp, struct dmae_command *dmae) +static int bnx2x_issue_dmae_with_comp(struct bnx2x *bp, + struct dmae_command *dmae) { u32 *wb_comp = bnx2x_sp(bp, wb_comp); int cnt = CHIP_REV_IS_SLOW(bp) ? (400000) : 40; @@ -674,8 +677,8 @@ void bnx2x_read_dmae(struct bnx2x *bp, u32 src_addr, u32 len32) bnx2x_issue_dmae_with_comp(bp, &dmae); } -void bnx2x_write_dmae_phys_len(struct bnx2x *bp, dma_addr_t phys_addr, - u32 addr, u32 len) +static void bnx2x_write_dmae_phys_len(struct bnx2x *bp, dma_addr_t phys_addr, + u32 addr, u32 len) { int dmae_wr_max = DMAE_LEN32_WR_MAX(bp); int offset = 0; @@ -1267,7 +1270,7 @@ static void bnx2x_igu_int_disable(struct bnx2x *bp) BNX2X_ERR("BUG! proper val not read from IGU!\n"); } -void bnx2x_int_disable(struct bnx2x *bp) +static void bnx2x_int_disable(struct bnx2x *bp) { if (bp->common.int_block == INT_BLOCK_HC) bnx2x_hc_int_disable(bp); @@ -2236,7 +2239,7 @@ u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param) } /* must be called under rtnl_lock */ -void bnx2x_rxq_set_mac_filters(struct bnx2x *bp, u16 cl_id, u32 filters) +static void bnx2x_rxq_set_mac_filters(struct bnx2x *bp, u16 cl_id, u32 filters) { u32 mask = (1 << cl_id); @@ -2303,7 +2306,7 @@ void bnx2x_rxq_set_mac_filters(struct bnx2x *bp, u16 cl_id, u32 filters) bp->mac_filters.unmatched_unicast & ~mask; } -void bnx2x_func_init(struct bnx2x *bp, struct bnx2x_func_init_params *p) +static void bnx2x_func_init(struct bnx2x *bp, struct bnx2x_func_init_params *p) { struct tstorm_eth_function_common_config tcfg = {0}; u16 rss_flgs; @@ -2460,7 +2463,7 @@ static void bnx2x_pf_tx_cl_prep(struct bnx2x *bp, txq_init->hc_rate = bp->tx_ticks ? (1000000 / bp->tx_ticks) : 0; } -void bnx2x_pf_init(struct bnx2x *bp) +static void bnx2x_pf_init(struct bnx2x *bp) { struct bnx2x_func_init_params func_init = {0}; struct bnx2x_rss_params rss = {0}; @@ -3928,7 +3931,7 @@ void bnx2x_setup_ndsb_state_machine(struct hc_status_block_sm *hc_sm, hc_sm->time_to_expire = 0xFFFFFFFF; } -void bnx2x_init_sb(struct bnx2x *bp, dma_addr_t mapping, int vfid, +static void bnx2x_init_sb(struct bnx2x *bp, dma_addr_t mapping, int vfid, u8 vf_valid, int fw_sb_id, int igu_sb_id) { int igu_seg_id; @@ -6021,6 +6024,9 @@ alloc_mem_err: /* * Init service functions */ +static int bnx2x_wait_ramrod(struct bnx2x *bp, int state, int idx, + int *state_p, int flags); + int bnx2x_func_start(struct bnx2x *bp) { bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_FUNCTION_START, 0, 0, 0, 1); @@ -6030,7 +6036,7 @@ int bnx2x_func_start(struct bnx2x *bp) WAIT_RAMROD_COMMON); } -int bnx2x_func_stop(struct bnx2x *bp) +static int bnx2x_func_stop(struct bnx2x *bp) { bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_FUNCTION_STOP, 0, 0, 0, 1); @@ -6103,8 +6109,8 @@ static void bnx2x_set_mac_addr_gen(struct bnx2x *bp, int set, u8 *mac, bnx2x_wait_ramrod(bp, 0, 0, &bp->set_mac_pending, ramrod_flags); } -int bnx2x_wait_ramrod(struct bnx2x *bp, int state, int idx, - int *state_p, int flags) +static int bnx2x_wait_ramrod(struct bnx2x *bp, int state, int idx, + int *state_p, int flags) { /* can take a while if any port is running */ int cnt = 5000; @@ -6154,7 +6160,7 @@ int bnx2x_wait_ramrod(struct bnx2x *bp, int state, int idx, return -EBUSY; } -u8 bnx2x_e1h_cam_offset(struct bnx2x *bp, u8 rel_offset) +static u8 bnx2x_e1h_cam_offset(struct bnx2x *bp, u8 rel_offset) { if (CHIP_IS_E1H(bp)) return E1H_FUNC_MAX * rel_offset + BP_FUNC(bp); @@ -6273,7 +6279,7 @@ static void bnx2x_invlidate_e1_mc_list(struct bnx2x *bp) * * @return 0 if cussess, -ENODEV if ramrod doesn't return. */ -int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set) +static int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp, int set) { u8 cam_offset = (CHIP_IS_E1(bp) ? ((BP_PORT(bp) ? 32 : 0) + 2) : bnx2x_e1h_cam_offset(bp, CAM_ISCSI_ETH_LINE)); @@ -6383,11 +6389,11 @@ static inline void bnx2x_set_ctx_validation(struct eth_context *cxt, u32 cid) ETH_CONNECTION_TYPE); } -int bnx2x_setup_fw_client(struct bnx2x *bp, - struct bnx2x_client_init_params *params, - u8 activate, - struct client_init_ramrod_data *data, - dma_addr_t data_mapping) +static int bnx2x_setup_fw_client(struct bnx2x *bp, + struct bnx2x_client_init_params *params, + u8 activate, + struct client_init_ramrod_data *data, + dma_addr_t data_mapping) { u16 hc_usec; int ramrod = RAMROD_CMD_ID_ETH_CLIENT_SETUP; @@ -6633,7 +6639,8 @@ int bnx2x_setup_client(struct bnx2x *bp, struct bnx2x_fastpath *fp, return rc; } -int bnx2x_stop_fw_client(struct bnx2x *bp, struct bnx2x_client_ramrod_params *p) +static int bnx2x_stop_fw_client(struct bnx2x *bp, + struct bnx2x_client_ramrod_params *p) { int rc; @@ -7440,7 +7447,7 @@ reset_task_exit: * Init service functions */ -u32 bnx2x_get_pretend_reg(struct bnx2x *bp) +static u32 bnx2x_get_pretend_reg(struct bnx2x *bp) { u32 base = PXP2_REG_PGL_PRETEND_FUNC_F0; u32 stride = PXP2_REG_PGL_PRETEND_FUNC_F1 - base; -- cgit v1.2.3-70-g09d2 From 38df7a39492d52f4fad484f611f01a01bd8f1e41 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Thu, 21 Oct 2010 07:50:57 +0000 Subject: e1000: make e1000_reinit_safe local Signed-off-by: Stephen Hemminger Acked-by: Jesse Brandeburg Signed-off-by: David S. Miller --- drivers/net/e1000/e1000_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index a117f2a0252..4686c3983fc 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -521,7 +521,7 @@ void e1000_down(struct e1000_adapter *adapter) e1000_clean_all_rx_rings(adapter); } -void e1000_reinit_safe(struct e1000_adapter *adapter) +static void e1000_reinit_safe(struct e1000_adapter *adapter) { while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) msleep(1); -- cgit v1.2.3-70-g09d2 From d618222352ac95ff9a21f1fc1018fffeb8952194 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 18 Oct 2010 12:14:44 +0000 Subject: pktgen: clean up handling of local/transient counter vars The temporary variable "i" is needlessly initialized to zero in two distinct cases in this file: 1) where it is set to zero and then used as an argument in an addition before being assigned a non-zero value. 2) where it is only used in a standard/typical loop counter For (1), simply delete assignment to zero and usages while still zero; for (2) simply make the loop start at zero as per standard practice as seen everywhere else in the same file. Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/core/pktgen.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 2c0df0f95b3..679b797d06b 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -771,10 +771,10 @@ done: static unsigned long num_arg(const char __user * user_buffer, unsigned long maxlen, unsigned long *num) { - int i = 0; + int i; *num = 0; - for (; i < maxlen; i++) { + for (i = 0; i < maxlen; i++) { char c; if (get_user(c, &user_buffer[i])) return -EFAULT; @@ -789,9 +789,9 @@ static unsigned long num_arg(const char __user * user_buffer, static int strn_len(const char __user * user_buffer, unsigned int maxlen) { - int i = 0; + int i; - for (; i < maxlen; i++) { + for (i = 0; i < maxlen; i++) { char c; if (get_user(c, &user_buffer[i])) return -EFAULT; @@ -846,7 +846,7 @@ static ssize_t pktgen_if_write(struct file *file, { struct seq_file *seq = file->private_data; struct pktgen_dev *pkt_dev = seq->private; - int i = 0, max, len; + int i, max, len; char name[16], valstr[32]; unsigned long value = 0; char *pg_result = NULL; @@ -860,13 +860,13 @@ static ssize_t pktgen_if_write(struct file *file, return -EINVAL; } - max = count - i; - tmp = count_trail_chars(&user_buffer[i], max); + max = count; + tmp = count_trail_chars(user_buffer, max); if (tmp < 0) { pr_warning("illegal format\n"); return tmp; } - i += tmp; + i = tmp; /* Read variable name */ @@ -1764,7 +1764,7 @@ static ssize_t pktgen_thread_write(struct file *file, { struct seq_file *seq = file->private_data; struct pktgen_thread *t = seq->private; - int i = 0, max, len, ret; + int i, max, len, ret; char name[40]; char *pg_result; @@ -1773,12 +1773,12 @@ static ssize_t pktgen_thread_write(struct file *file, return -EINVAL; } - max = count - i; - len = count_trail_chars(&user_buffer[i], max); + max = count; + len = count_trail_chars(user_buffer, max); if (len < 0) return len; - i += len; + i = len; /* Read variable name */ @@ -1975,7 +1975,7 @@ static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname) { char b[IFNAMSIZ+5]; - int i = 0; + int i; for (i = 0; ifname[i] != '@'; i++) { if (i == IFNAMSIZ) @@ -2519,8 +2519,8 @@ static void free_SAs(struct pktgen_dev *pkt_dev) { if (pkt_dev->cflows) { /* let go of the SAs if we have them */ - int i = 0; - for (; i < pkt_dev->cflows; i++) { + int i; + for (i = 0; i < pkt_dev->cflows; i++) { struct xfrm_state *x = pkt_dev->flows[i].x; if (x) { xfrm_state_put(x); -- cgit v1.2.3-70-g09d2 From 7e223de84b73c621b90755dc4d8c8128e673b529 Mon Sep 17 00:00:00 2001 From: Anders Franzen Date: Tue, 19 Oct 2010 03:50:47 +0000 Subject: ip6_tunnel dont update the mtu on the route. The ip6_tunnel device did not unset the flag, IFF_XMIT_DST_RELEASE. This will make the dev layer to release the dst before calling the tunnel. The tunnel will not update any mtu/pmtu info, since it does not have a dst on the skb. Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/ip6_tunnel.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index c2c0f89397b..38b9a56c173 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1371,6 +1371,7 @@ static void ip6_tnl_dev_setup(struct net_device *dev) dev->flags |= IFF_NOARP; dev->addr_len = sizeof(struct in6_addr); dev->features |= NETIF_F_NETNS_LOCAL; + dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; } -- cgit v1.2.3-70-g09d2 From 2d3359f8b9e6b3d6339b7e72f8e82275058eb13c Mon Sep 17 00:00:00 2001 From: "Andre B. Oliveira" Date: Mon, 18 Oct 2010 21:47:27 +0000 Subject: can: tscan1: add driver for TS-CAN1 boards Add driver for Technologic Systems TS-CAN1 PC104 peripheral boards. Signed-off-by: Andre B. Oliveira Acked-by: Wolfgang Grandegger Reviewed-by: Wolfram Sang Signed-off-by: David S. Miller --- drivers/net/can/sja1000/Kconfig | 12 +++ drivers/net/can/sja1000/Makefile | 1 + drivers/net/can/sja1000/tscan1.c | 216 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 229 insertions(+) create mode 100644 drivers/net/can/sja1000/tscan1.c diff --git a/drivers/net/can/sja1000/Kconfig b/drivers/net/can/sja1000/Kconfig index ae3505afd68..6fdc031daaa 100644 --- a/drivers/net/can/sja1000/Kconfig +++ b/drivers/net/can/sja1000/Kconfig @@ -58,4 +58,16 @@ config CAN_PLX_PCI - esd CAN-PCIe/2000 - Marathon CAN-bus-PCI card (http://www.marathon.ru/) - TEWS TECHNOLOGIES TPMC810 card (http://www.tews.com/) + +config CAN_TSCAN1 + tristate "TS-CAN1 PC104 boards" + depends on ISA + help + This driver is for Technologic Systems' TSCAN-1 PC104 boards. + http://www.embeddedarm.com/products/board-detail.php?product=TS-CAN1 + The driver supports multiple boards and automatically configures them: + PLD IO base addresses are read from jumpers JP1 and JP2, + IRQ numbers are read from jumpers JP4 and JP5, + SJA1000 IO base addresses are chosen heuristically (first that works). + endif diff --git a/drivers/net/can/sja1000/Makefile b/drivers/net/can/sja1000/Makefile index ce924553995..2c591eb321c 100644 --- a/drivers/net/can/sja1000/Makefile +++ b/drivers/net/can/sja1000/Makefile @@ -9,5 +9,6 @@ obj-$(CONFIG_CAN_SJA1000_OF_PLATFORM) += sja1000_of_platform.o obj-$(CONFIG_CAN_EMS_PCI) += ems_pci.o obj-$(CONFIG_CAN_KVASER_PCI) += kvaser_pci.o obj-$(CONFIG_CAN_PLX_PCI) += plx_pci.o +obj-$(CONFIG_CAN_TSCAN1) += tscan1.o ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG diff --git a/drivers/net/can/sja1000/tscan1.c b/drivers/net/can/sja1000/tscan1.c new file mode 100644 index 00000000000..9756099a883 --- /dev/null +++ b/drivers/net/can/sja1000/tscan1.c @@ -0,0 +1,216 @@ +/* + * tscan1.c: driver for Technologic Systems TS-CAN1 PC104 boards + * + * Copyright 2010 Andre B. Oliveira + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * References: + * - Getting started with TS-CAN1, Technologic Systems, Jun 2009 + * http://www.embeddedarm.com/documentation/ts-can1-manual.pdf + */ + +#include +#include +#include +#include +#include +#include +#include "sja1000.h" + +MODULE_DESCRIPTION("Driver for Technologic Systems TS-CAN1 PC104 boards"); +MODULE_AUTHOR("Andre B. Oliveira "); +MODULE_LICENSE("GPL"); + +/* Maximum number of boards (one in each JP1:JP2 setting of IO address) */ +#define TSCAN1_MAXDEV 4 + +/* PLD registers address offsets */ +#define TSCAN1_ID1 0 +#define TSCAN1_ID2 1 +#define TSCAN1_VERSION 2 +#define TSCAN1_LED 3 +#define TSCAN1_PAGE 4 +#define TSCAN1_MODE 5 +#define TSCAN1_JUMPERS 6 + +/* PLD board identifier registers magic values */ +#define TSCAN1_ID1_VALUE 0xf6 +#define TSCAN1_ID2_VALUE 0xb9 + +/* PLD mode register SJA1000 IO enable bit */ +#define TSCAN1_MODE_ENABLE 0x40 + +/* PLD jumpers register bits */ +#define TSCAN1_JP4 0x10 +#define TSCAN1_JP5 0x20 + +/* PLD IO base addresses start */ +#define TSCAN1_PLD_ADDRESS 0x150 + +/* PLD register space size */ +#define TSCAN1_PLD_SIZE 8 + +/* SJA1000 register space size */ +#define TSCAN1_SJA1000_SIZE 32 + +/* SJA1000 crystal frequency (16MHz) */ +#define TSCAN1_SJA1000_XTAL 16000000 + +/* SJA1000 IO base addresses */ +static const unsigned short tscan1_sja1000_addresses[] __devinitconst = { + 0x100, 0x120, 0x180, 0x1a0, 0x200, 0x240, 0x280, 0x320 +}; + +/* Read SJA1000 register */ +static u8 tscan1_read(const struct sja1000_priv *priv, int reg) +{ + return inb((unsigned long)priv->reg_base + reg); +} + +/* Write SJA1000 register */ +static void tscan1_write(const struct sja1000_priv *priv, int reg, u8 val) +{ + outb(val, (unsigned long)priv->reg_base + reg); +} + +/* Probe for a TS-CAN1 board with JP2:JP1 jumper setting ID */ +static int __devinit tscan1_probe(struct device *dev, unsigned id) +{ + struct net_device *netdev; + struct sja1000_priv *priv; + unsigned long pld_base, sja1000_base; + int irq, i; + + pld_base = TSCAN1_PLD_ADDRESS + id * TSCAN1_PLD_SIZE; + if (!request_region(pld_base, TSCAN1_PLD_SIZE, dev_name(dev))) + return -EBUSY; + + if (inb(pld_base + TSCAN1_ID1) != TSCAN1_ID1_VALUE || + inb(pld_base + TSCAN1_ID2) != TSCAN1_ID2_VALUE) { + release_region(pld_base, TSCAN1_PLD_SIZE); + return -ENODEV; + } + + switch (inb(pld_base + TSCAN1_JUMPERS) & (TSCAN1_JP4 | TSCAN1_JP5)) { + case TSCAN1_JP4: + irq = 6; + break; + case TSCAN1_JP5: + irq = 7; + break; + case TSCAN1_JP4 | TSCAN1_JP5: + irq = 5; + break; + default: + dev_err(dev, "invalid JP4:JP5 setting (no IRQ)\n"); + release_region(pld_base, TSCAN1_PLD_SIZE); + return -EINVAL; + } + + netdev = alloc_sja1000dev(0); + if (!netdev) { + release_region(pld_base, TSCAN1_PLD_SIZE); + return -ENOMEM; + } + + dev_set_drvdata(dev, netdev); + SET_NETDEV_DEV(netdev, dev); + + netdev->base_addr = pld_base; + netdev->irq = irq; + + priv = netdev_priv(netdev); + priv->read_reg = tscan1_read; + priv->write_reg = tscan1_write; + priv->can.clock.freq = TSCAN1_SJA1000_XTAL / 2; + priv->cdr = CDR_CBP | CDR_CLK_OFF; + priv->ocr = OCR_TX0_PUSHPULL; + + /* Select the first SJA1000 IO address that is free and that works */ + for (i = 0; i < ARRAY_SIZE(tscan1_sja1000_addresses); i++) { + sja1000_base = tscan1_sja1000_addresses[i]; + if (!request_region(sja1000_base, TSCAN1_SJA1000_SIZE, + dev_name(dev))) + continue; + + /* Set SJA1000 IO base address and enable it */ + outb(TSCAN1_MODE_ENABLE | i, pld_base + TSCAN1_MODE); + + priv->reg_base = (void __iomem *)sja1000_base; + if (!register_sja1000dev(netdev)) { + /* SJA1000 probe succeeded; turn LED off and return */ + outb(0, pld_base + TSCAN1_LED); + netdev_info(netdev, "TS-CAN1 at 0x%lx 0x%lx irq %d\n", + pld_base, sja1000_base, irq); + return 0; + } + + /* SJA1000 probe failed; release and try next address */ + outb(0, pld_base + TSCAN1_MODE); + release_region(sja1000_base, TSCAN1_SJA1000_SIZE); + } + + dev_err(dev, "failed to assign SJA1000 IO address\n"); + dev_set_drvdata(dev, NULL); + free_sja1000dev(netdev); + release_region(pld_base, TSCAN1_PLD_SIZE); + return -ENXIO; +} + +static int __devexit tscan1_remove(struct device *dev, unsigned id /*unused*/) +{ + struct net_device *netdev; + struct sja1000_priv *priv; + unsigned long pld_base, sja1000_base; + + netdev = dev_get_drvdata(dev); + unregister_sja1000dev(netdev); + dev_set_drvdata(dev, NULL); + + priv = netdev_priv(netdev); + pld_base = netdev->base_addr; + sja1000_base = (unsigned long)priv->reg_base; + + outb(0, pld_base + TSCAN1_MODE); /* disable SJA1000 IO space */ + + release_region(sja1000_base, TSCAN1_SJA1000_SIZE); + release_region(pld_base, TSCAN1_PLD_SIZE); + + free_sja1000dev(netdev); + + return 0; +} + +static struct isa_driver tscan1_isa_driver = { + .probe = tscan1_probe, + .remove = __devexit_p(tscan1_remove), + .driver = { + .name = "tscan1", + }, +}; + +static int __init tscan1_init(void) +{ + return isa_register_driver(&tscan1_isa_driver, TSCAN1_MAXDEV); +} +module_init(tscan1_init); + +static void __exit tscan1_exit(void) +{ + isa_unregister_driver(&tscan1_isa_driver); +} +module_exit(tscan1_exit); -- cgit v1.2.3-70-g09d2 From 8f6d9f40476895571df039b6f1f5230ec7faebad Mon Sep 17 00:00:00 2001 From: Dimitris Michailidis Date: Thu, 21 Oct 2010 11:29:55 +0000 Subject: cxgb4: fix crash due to manipulating queues before registration Before commit "net: allocate tx queues in register_netdevice" netif_tx_stop_all_queues and related functions could be used between device allocation and registration but now only after registration. cxgb4 has such a call before registration and crashes now. Move it after register_netdev. Signed-off-by: Dimitris Michailidis Signed-off-by: David S. Miller --- drivers/net/cxgb4/cxgb4_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/cxgb4/cxgb4_main.c b/drivers/net/cxgb4/cxgb4_main.c index 87054e0a574..2a01a23ed40 100644 --- a/drivers/net/cxgb4/cxgb4_main.c +++ b/drivers/net/cxgb4/cxgb4_main.c @@ -3658,7 +3658,6 @@ static int __devinit init_one(struct pci_dev *pdev, pi->rx_offload = RX_CSO; pi->port_id = i; netif_carrier_off(netdev); - netif_tx_stop_all_queues(netdev); netdev->irq = pdev->irq; netdev->features |= NETIF_F_SG | TSO_FLAGS; @@ -3730,6 +3729,7 @@ static int __devinit init_one(struct pci_dev *pdev, __set_bit(i, &adapter->registered_device_map); adapter->chan_map[adap2pinfo(adapter, i)->tx_chan] = i; + netif_tx_stop_all_queues(adapter->port[i]); } } if (!adapter->registered_device_map) { -- cgit v1.2.3-70-g09d2 From 19ecae2c8fd5e54e40ace914a41d8e1beb41612c Mon Sep 17 00:00:00 2001 From: Dimitris Michailidis Date: Thu, 21 Oct 2010 11:29:56 +0000 Subject: cxgb4: update to utilize the newer VLAN infrastructure Signed-off-by: Dimitris Michailidis Signed-off-by: David S. Miller --- drivers/net/cxgb4/cxgb4.h | 1 - drivers/net/cxgb4/cxgb4_main.c | 31 +++++++++++++++++++------------ drivers/net/cxgb4/sge.c | 23 +++++------------------ 3 files changed, 24 insertions(+), 31 deletions(-) diff --git a/drivers/net/cxgb4/cxgb4.h b/drivers/net/cxgb4/cxgb4.h index eaa49e4119f..3d4253d311e 100644 --- a/drivers/net/cxgb4/cxgb4.h +++ b/drivers/net/cxgb4/cxgb4.h @@ -281,7 +281,6 @@ struct sge_rspq; struct port_info { struct adapter *adapter; - struct vlan_group *vlan_grp; u16 viid; s16 xact_addr_filt; /* index of exact MAC address filter */ u16 rss_size; /* size of VI's RSS table slice */ diff --git a/drivers/net/cxgb4/cxgb4_main.c b/drivers/net/cxgb4/cxgb4_main.c index 2a01a23ed40..f17703f410b 100644 --- a/drivers/net/cxgb4/cxgb4_main.c +++ b/drivers/net/cxgb4/cxgb4_main.c @@ -403,7 +403,7 @@ static int link_start(struct net_device *dev) * that step explicitly. */ ret = t4_set_rxmode(pi->adapter, mb, pi->viid, dev->mtu, -1, -1, -1, - pi->vlan_grp != NULL, true); + !!(dev->features & NETIF_F_HW_VLAN_RX), true); if (ret == 0) { ret = t4_change_mac(pi->adapter, mb, pi->viid, pi->xact_addr_filt, dev->dev_addr, true, @@ -1881,7 +1881,24 @@ static int set_tso(struct net_device *dev, u32 value) static int set_flags(struct net_device *dev, u32 flags) { - return ethtool_op_set_flags(dev, flags, ETH_FLAG_RXHASH); + int err; + unsigned long old_feat = dev->features; + + err = ethtool_op_set_flags(dev, flags, ETH_FLAG_RXHASH | + ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN); + if (err) + return err; + + if ((old_feat ^ dev->features) & NETIF_F_HW_VLAN_RX) { + const struct port_info *pi = netdev_priv(dev); + + err = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, -1, + -1, -1, -1, !!(flags & ETH_FLAG_RXVLAN), + true); + if (err) + dev->features = old_feat; + } + return err; } static int get_rss_table(struct net_device *dev, struct ethtool_rxfh_indir *p) @@ -2842,15 +2859,6 @@ static int cxgb_set_mac_addr(struct net_device *dev, void *p) return 0; } -static void vlan_rx_register(struct net_device *dev, struct vlan_group *grp) -{ - struct port_info *pi = netdev_priv(dev); - - pi->vlan_grp = grp; - t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, -1, -1, -1, -1, - grp != NULL, true); -} - #ifdef CONFIG_NET_POLL_CONTROLLER static void cxgb_netpoll(struct net_device *dev) { @@ -2878,7 +2886,6 @@ static const struct net_device_ops cxgb4_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_do_ioctl = cxgb_ioctl, .ndo_change_mtu = cxgb_change_mtu, - .ndo_vlan_rx_register = vlan_rx_register, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = cxgb_netpoll, #endif diff --git a/drivers/net/cxgb4/sge.c b/drivers/net/cxgb4/sge.c index 9967f3debce..17022258ed6 100644 --- a/drivers/net/cxgb4/sge.c +++ b/drivers/net/cxgb4/sge.c @@ -1530,18 +1530,11 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl, skb->rxhash = (__force u32)pkt->rsshdr.hash_val; if (unlikely(pkt->vlan_ex)) { - struct port_info *pi = netdev_priv(rxq->rspq.netdev); - struct vlan_group *grp = pi->vlan_grp; - + __vlan_hwaccel_put_tag(skb, ntohs(pkt->vlan)); rxq->stats.vlan_ex++; - if (likely(grp)) { - ret = vlan_gro_frags(&rxq->rspq.napi, grp, - ntohs(pkt->vlan)); - goto stats; - } } ret = napi_gro_frags(&rxq->rspq.napi); -stats: if (ret == GRO_HELD) + if (ret == GRO_HELD) rxq->stats.lro_pkts++; else if (ret == GRO_MERGED || ret == GRO_MERGED_FREE) rxq->stats.lro_merged++; @@ -1608,16 +1601,10 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp, skb_checksum_none_assert(skb); if (unlikely(pkt->vlan_ex)) { - struct vlan_group *grp = pi->vlan_grp; - + __vlan_hwaccel_put_tag(skb, ntohs(pkt->vlan)); rxq->stats.vlan_ex++; - if (likely(grp)) - vlan_hwaccel_receive_skb(skb, grp, ntohs(pkt->vlan)); - else - dev_kfree_skb_any(skb); - } else - netif_receive_skb(skb); - + } + netif_receive_skb(skb); return 0; } -- cgit v1.2.3-70-g09d2 From 3843e5154cdcab15fa7405f175e9a1626030792d Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Thu, 21 Oct 2010 18:05:32 +0000 Subject: vmxnet3: remove set_flag_le{16,64} helpers It's easier to just annotate the constants as little endian types and set/clear the flags directly. Signed-off-by: Harvey Harrison Signed-off-by: Shreyas Bhatewara Signed-off-by: David S. Miller --- drivers/net/vmxnet3/upt1_defs.h | 8 ++++---- drivers/net/vmxnet3/vmxnet3_defs.h | 6 +++--- drivers/net/vmxnet3/vmxnet3_drv.c | 20 +++++++++----------- drivers/net/vmxnet3/vmxnet3_ethtool.c | 14 ++++++-------- drivers/net/vmxnet3/vmxnet3_int.h | 15 --------------- 5 files changed, 22 insertions(+), 41 deletions(-) diff --git a/drivers/net/vmxnet3/upt1_defs.h b/drivers/net/vmxnet3/upt1_defs.h index 37108fb226d..969c751ee40 100644 --- a/drivers/net/vmxnet3/upt1_defs.h +++ b/drivers/net/vmxnet3/upt1_defs.h @@ -88,9 +88,9 @@ struct UPT1_RSSConf { /* features */ enum { - UPT1_F_RXCSUM = 0x0001, /* rx csum verification */ - UPT1_F_RSS = 0x0002, - UPT1_F_RXVLAN = 0x0004, /* VLAN tag stripping */ - UPT1_F_LRO = 0x0008, + UPT1_F_RXCSUM = cpu_to_le64(0x0001), /* rx csum verification */ + UPT1_F_RSS = cpu_to_le64(0x0002), + UPT1_F_RXVLAN = cpu_to_le64(0x0004), /* VLAN tag stripping */ + UPT1_F_LRO = cpu_to_le64(0x0008), }; #endif diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h index ca7727b940a..4d84912c99b 100644 --- a/drivers/net/vmxnet3/vmxnet3_defs.h +++ b/drivers/net/vmxnet3/vmxnet3_defs.h @@ -523,9 +523,9 @@ struct Vmxnet3_RxFilterConf { #define VMXNET3_PM_MAX_PATTERN_SIZE 128 #define VMXNET3_PM_MAX_MASK_SIZE (VMXNET3_PM_MAX_PATTERN_SIZE / 8) -#define VMXNET3_PM_WAKEUP_MAGIC 0x01 /* wake up on magic pkts */ -#define VMXNET3_PM_WAKEUP_FILTER 0x02 /* wake up on pkts matching - * filters */ +#define VMXNET3_PM_WAKEUP_MAGIC cpu_to_le16(0x01) /* wake up on magic pkts */ +#define VMXNET3_PM_WAKEUP_FILTER cpu_to_le16(0x02) /* wake up on pkts matching + * filters */ struct Vmxnet3_PM_PktFilter { diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index 3f60e0e3097..2ea4b818a07 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -1563,8 +1563,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) adapter->vlan_grp = grp; /* update FEATURES to device */ - set_flag_le64(&devRead->misc.uptFeatures, - UPT1_F_RXVLAN); + devRead->misc.uptFeatures |= UPT1_F_RXVLAN; VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_FEATURE); /* @@ -1587,7 +1586,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) struct Vmxnet3_DSDevRead *devRead = &shared->devRead; adapter->vlan_grp = NULL; - if (le64_to_cpu(devRead->misc.uptFeatures) & UPT1_F_RXVLAN) { + if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) { int i; for (i = 0; i < VMXNET3_VFT_SIZE; i++) { @@ -1600,8 +1599,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) VMXNET3_CMD_UPDATE_VLAN_FILTERS); /* update FEATURES to device */ - reset_flag_le64(&devRead->misc.uptFeatures, - UPT1_F_RXVLAN); + devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN; VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_FEATURE); } @@ -1762,15 +1760,15 @@ vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) /* set up feature flags */ if (adapter->rxcsum) - set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_RXCSUM); + devRead->misc.uptFeatures |= UPT1_F_RXCSUM; if (adapter->lro) { - set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_LRO); + devRead->misc.uptFeatures |= UPT1_F_LRO; devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); } if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX) && adapter->vlan_grp) { - set_flag_le64(&devRead->misc.uptFeatures, UPT1_F_RXVLAN); + devRead->misc.uptFeatures |= UPT1_F_RXVLAN; } devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); @@ -2577,7 +2575,7 @@ vmxnet3_suspend(struct device *device) memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ - set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_FILTER); + pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; i++; } @@ -2619,13 +2617,13 @@ vmxnet3_suspend(struct device *device) pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ in_dev_put(in_dev); - set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_FILTER); + pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; i++; } skip_arp: if (adapter->wol & WAKE_MAGIC) - set_flag_le16(&pmConf->wakeUpEvents, VMXNET3_PM_WAKEUP_MAGIC); + pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; pmConf->numFilters = i; diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c index 7e4b5a89165..b79070bcc92 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethtool.c +++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c @@ -50,13 +50,11 @@ vmxnet3_set_rx_csum(struct net_device *netdev, u32 val) adapter->rxcsum = val; if (netif_running(netdev)) { if (val) - set_flag_le64( - &adapter->shared->devRead.misc.uptFeatures, - UPT1_F_RXCSUM); + adapter->shared->devRead.misc.uptFeatures |= + UPT1_F_RXCSUM; else - reset_flag_le64( - &adapter->shared->devRead.misc.uptFeatures, - UPT1_F_RXCSUM); + adapter->shared->devRead.misc.uptFeatures &= + ~UPT1_F_RXCSUM; VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_FEATURE); @@ -292,10 +290,10 @@ vmxnet3_set_flags(struct net_device *netdev, u32 data) /* update harware LRO capability accordingly */ if (lro_requested) adapter->shared->devRead.misc.uptFeatures |= - cpu_to_le64(UPT1_F_LRO); + UPT1_F_LRO; else adapter->shared->devRead.misc.uptFeatures &= - cpu_to_le64(~UPT1_F_LRO); + ~UPT1_F_LRO; VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_FEATURE); } diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h index c88ea5cbba0..46aee6dc8f4 100644 --- a/drivers/net/vmxnet3/vmxnet3_int.h +++ b/drivers/net/vmxnet3/vmxnet3_int.h @@ -353,21 +353,6 @@ struct vmxnet3_adapter { #define VMXNET3_MAX_ETH_HDR_SIZE 22 #define VMXNET3_MAX_SKB_BUF_SIZE (3*1024) -static inline void set_flag_le16(__le16 *data, u16 flag) -{ - *data = cpu_to_le16(le16_to_cpu(*data) | flag); -} - -static inline void set_flag_le64(__le64 *data, u64 flag) -{ - *data = cpu_to_le64(le64_to_cpu(*data) | flag); -} - -static inline void reset_flag_le64(__le64 *data, u64 flag) -{ - *data = cpu_to_le64(le64_to_cpu(*data) & ~flag); -} - int vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter); -- cgit v1.2.3-70-g09d2 From 81e8e5601fba4ea5bc3bfbed0fec074cf65feca5 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Thu, 21 Oct 2010 18:05:33 +0000 Subject: vmxnet3: annotate hwaddr members as __iomem pointers Signed-off-by: Harvey Harrison Signed-off-by: Shreyas Bhatewara Signed-off-by: David S. Miller --- drivers/net/vmxnet3/vmxnet3_int.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h index 46aee6dc8f4..8a2f4712284 100644 --- a/drivers/net/vmxnet3/vmxnet3_int.h +++ b/drivers/net/vmxnet3/vmxnet3_int.h @@ -301,8 +301,8 @@ struct vmxnet3_adapter { struct net_device *netdev; struct pci_dev *pdev; - u8 *hw_addr0; /* for BAR 0 */ - u8 *hw_addr1; /* for BAR 1 */ + u8 __iomem *hw_addr0; /* for BAR 0 */ + u8 __iomem *hw_addr1; /* for BAR 1 */ /* feature control */ bool rxcsum; -- cgit v1.2.3-70-g09d2 From 0561cf3dbff1f37c0d374fb1b824ef3a117c85e0 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Thu, 21 Oct 2010 18:05:34 +0000 Subject: vmxnet3: fix typo setting confPA It's a le64, not a le32, typo in one place only. Noticed by sparse: drivers/net/vmxnet3/vmxnet3_drv.c:2668:52: warning: incorrect type in assignment (different base types) drivers/net/vmxnet3/vmxnet3_drv.c:2668:52: expected restricted __le64 [usertype] confPA drivers/net/vmxnet3/vmxnet3_drv.c:2668:52: got restricted __le32 [usertype] Signed-off-by: Harvey Harrison Signed-off-by: Shreyas Bhatewara Signed-off-by: David S. Miller --- drivers/net/vmxnet3/vmxnet3_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index 2ea4b818a07..e3658e10db3 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -2665,7 +2665,7 @@ vmxnet3_resume(struct device *device) adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( *pmConf)); - adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le32(virt_to_phys( + adapter->shared->devRead.pmConfDesc.confPA = cpu_to_le64(virt_to_phys( pmConf)); netif_device_attach(netdev); -- cgit v1.2.3-70-g09d2 From b889416b54c90f59276537debd92cb4e84b5f550 Mon Sep 17 00:00:00 2001 From: Balazs Scheidler Date: Sat, 23 Oct 2010 04:48:14 +0000 Subject: tproxy: Add missing CAP_NET_ADMIN check to ipv6 side IP_TRANSPARENT requires root (more precisely CAP_NET_ADMIN privielges) for IPV6. However as I see right now this check was missed from the IPv6 implementation. Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ipv6/ipv6_sockglue.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index 0553867a317..d1770e061c0 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -343,6 +343,10 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, break; case IPV6_TRANSPARENT: + if (!capable(CAP_NET_ADMIN)) { + retv = -EPERM; + break; + } if (optlen < sizeof(int)) goto e_inval; /* we don't have a separate transparent bit for IPV6 we use the one in the IPv4 socket */ -- cgit v1.2.3-70-g09d2 From 1c5578194abde100c089855cce72e87c047d8530 Mon Sep 17 00:00:00 2001 From: Guo-Fu Tseng Date: Sun, 24 Oct 2010 16:18:25 -0700 Subject: jme: Support WoL after shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adding shutdown function that setup wake if wol is enabled. Add jme_phy_on in jme_set_100m_half in case it is shutting down or suspending when interface is down(phy_off by default). v2 updates: Removed CONFIG_PM ifdef for jme_set_100m_half and jme_wait_link. It would be nice if it can be applied to net-2.6 along with other patches sent few days ago. If it is not appropriate, please ignore the net-2.6 request, and apply it to net-next-2.6 as previous patch. :) Reported-and-helped-by: Сtac Signed-off-by: Guo-Fu Tseng Signed-off-by: David S. Miller --- drivers/net/jme.c | 45 ++++++++++++++++++++++++++++++--------------- 1 file changed, 30 insertions(+), 15 deletions(-) diff --git a/drivers/net/jme.c b/drivers/net/jme.c index d7a975ee2ad..d85edf3119c 100644 --- a/drivers/net/jme.c +++ b/drivers/net/jme.c @@ -1623,12 +1623,12 @@ err_out: return rc; } -#ifdef CONFIG_PM static void jme_set_100m_half(struct jme_adapter *jme) { u32 bmcr, tmp; + jme_phy_on(jme); bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_FULLDPLX); @@ -1656,7 +1656,6 @@ jme_wait_link(struct jme_adapter *jme) phylink = jme_linkstat_from_phy(jme); } } -#endif static inline void jme_phy_off(struct jme_adapter *jme) @@ -1664,6 +1663,21 @@ jme_phy_off(struct jme_adapter *jme) jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN); } +static void +jme_powersave_phy(struct jme_adapter *jme) +{ + if (jme->reg_pmcs) { + jme_set_100m_half(jme); + + if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) + jme_wait_link(jme); + + jwrite32(jme, JME_PMCS, jme->reg_pmcs); + } else { + jme_phy_off(jme); + } +} + static int jme_close(struct net_device *netdev) { @@ -2991,6 +3005,16 @@ jme_remove_one(struct pci_dev *pdev) } +static void +jme_shutdown(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct jme_adapter *jme = netdev_priv(netdev); + + jme_powersave_phy(jme); + pci_pme_active(pdev, true); +} + #ifdef CONFIG_PM static int jme_suspend(struct pci_dev *pdev, pm_message_t state) @@ -3028,19 +3052,9 @@ jme_suspend(struct pci_dev *pdev, pm_message_t state) tasklet_hi_enable(&jme->rxempty_task); pci_save_state(pdev); - if (jme->reg_pmcs) { - jme_set_100m_half(jme); - - if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) - jme_wait_link(jme); - - jwrite32(jme, JME_PMCS, jme->reg_pmcs); - - pci_enable_wake(pdev, PCI_D3cold, true); - } else { - jme_phy_off(jme); - } - pci_set_power_state(pdev, PCI_D3cold); + jme_powersave_phy(jme); + pci_enable_wake(jme->pdev, PCI_D3hot, true); + pci_set_power_state(pdev, PCI_D3hot); return 0; } @@ -3087,6 +3101,7 @@ static struct pci_driver jme_driver = { .suspend = jme_suspend, .resume = jme_resume, #endif /* CONFIG_PM */ + .shutdown = jme_shutdown, }; static int __init -- cgit v1.2.3-70-g09d2 From 7f8a688e1e319fcc94dbed83a6ec82cea13f10b9 Mon Sep 17 00:00:00 2001 From: Denis Kirjanov Date: Fri, 22 Oct 2010 05:41:14 +0000 Subject: slhc: Don't export symbols twice Don't export symbols twice. Signed-off-by: Denis Kirjanov Signed-off-by: David S. Miller --- drivers/net/slhc.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff --git a/drivers/net/slhc.c b/drivers/net/slhc.c index ac279fad9d4..ab9e3b785b5 100644 --- a/drivers/net/slhc.c +++ b/drivers/net/slhc.c @@ -688,18 +688,8 @@ slhc_toss(struct slcompress *comp) return 0; } - -/* VJ header compression */ -EXPORT_SYMBOL(slhc_init); -EXPORT_SYMBOL(slhc_free); -EXPORT_SYMBOL(slhc_remember); -EXPORT_SYMBOL(slhc_compress); -EXPORT_SYMBOL(slhc_uncompress); -EXPORT_SYMBOL(slhc_toss); - #else /* CONFIG_INET */ - int slhc_toss(struct slcompress *comp) { @@ -738,6 +728,10 @@ slhc_init(int rslots, int tslots) printk(KERN_DEBUG "Called IP function on non IP-system: slhc_init"); return NULL; } + +#endif /* CONFIG_INET */ + +/* VJ header compression */ EXPORT_SYMBOL(slhc_init); EXPORT_SYMBOL(slhc_free); EXPORT_SYMBOL(slhc_remember); @@ -745,5 +739,4 @@ EXPORT_SYMBOL(slhc_compress); EXPORT_SYMBOL(slhc_uncompress); EXPORT_SYMBOL(slhc_toss); -#endif /* CONFIG_INET */ MODULE_LICENSE("Dual BSD/GPL"); -- cgit v1.2.3-70-g09d2 From 5c398dc8f5a58b5417d8ae0d474704feb6e12a12 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 24 Oct 2010 04:27:10 +0000 Subject: netlink: fix netlink_change_ngroups() commit 6c04bb18ddd633 (netlink: use call_rcu for netlink_change_ngroups) used a somewhat convoluted and racy way to perform call_rcu(). The old block of memory is freed after a grace period, but the rcu_head used to track it is located in new block. This can clash if we call two times or more netlink_change_ngroups(), and a block is freed before another. call_rcu() called on different cpus makes no guarantee in order of callbacks. Fix this using a more standard way of handling this : Each block of memory contains its own rcu_head, so that no 'use after free' can happens. Signed-off-by: Eric Dumazet CC: Johannes Berg CC: Paul E. McKenney Signed-off-by: David S. Miller --- net/netlink/af_netlink.c | 65 ++++++++++++++++++------------------------------ 1 file changed, 24 insertions(+), 41 deletions(-) diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index cd96ed3ccee..478181d53c5 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -83,9 +83,9 @@ struct netlink_sock { struct module *module; }; -struct listeners_rcu_head { - struct rcu_head rcu_head; - void *ptr; +struct listeners { + struct rcu_head rcu; + unsigned long masks[0]; }; #define NETLINK_KERNEL_SOCKET 0x1 @@ -119,7 +119,7 @@ struct nl_pid_hash { struct netlink_table { struct nl_pid_hash hash; struct hlist_head mc_list; - unsigned long *listeners; + struct listeners __rcu *listeners; unsigned int nl_nonroot; unsigned int groups; struct mutex *cb_mutex; @@ -338,7 +338,7 @@ netlink_update_listeners(struct sock *sk) if (i < NLGRPLONGS(nlk_sk(sk)->ngroups)) mask |= nlk_sk(sk)->groups[i]; } - tbl->listeners[i] = mask; + tbl->listeners->masks[i] = mask; } /* this function is only called with the netlink table "grabbed", which * makes sure updates are visible before bind or setsockopt return. */ @@ -936,7 +936,7 @@ EXPORT_SYMBOL(netlink_unicast); int netlink_has_listeners(struct sock *sk, unsigned int group) { int res = 0; - unsigned long *listeners; + struct listeners *listeners; BUG_ON(!netlink_is_kernel(sk)); @@ -944,7 +944,7 @@ int netlink_has_listeners(struct sock *sk, unsigned int group) listeners = rcu_dereference(nl_table[sk->sk_protocol].listeners); if (group - 1 < nl_table[sk->sk_protocol].groups) - res = test_bit(group - 1, listeners); + res = test_bit(group - 1, listeners->masks); rcu_read_unlock(); @@ -1498,7 +1498,7 @@ netlink_kernel_create(struct net *net, int unit, unsigned int groups, struct socket *sock; struct sock *sk; struct netlink_sock *nlk; - unsigned long *listeners = NULL; + struct listeners *listeners = NULL; BUG_ON(!nl_table); @@ -1523,8 +1523,7 @@ netlink_kernel_create(struct net *net, int unit, unsigned int groups, if (groups < 32) groups = 32; - listeners = kzalloc(NLGRPSZ(groups) + sizeof(struct listeners_rcu_head), - GFP_KERNEL); + listeners = kzalloc(sizeof(*listeners) + NLGRPSZ(groups), GFP_KERNEL); if (!listeners) goto out_sock_release; @@ -1541,7 +1540,7 @@ netlink_kernel_create(struct net *net, int unit, unsigned int groups, netlink_table_grab(); if (!nl_table[unit].registered) { nl_table[unit].groups = groups; - nl_table[unit].listeners = listeners; + rcu_assign_pointer(nl_table[unit].listeners, listeners); nl_table[unit].cb_mutex = cb_mutex; nl_table[unit].module = module; nl_table[unit].registered = 1; @@ -1572,43 +1571,28 @@ netlink_kernel_release(struct sock *sk) EXPORT_SYMBOL(netlink_kernel_release); -static void netlink_free_old_listeners(struct rcu_head *rcu_head) +static void listeners_free_rcu(struct rcu_head *head) { - struct listeners_rcu_head *lrh; - - lrh = container_of(rcu_head, struct listeners_rcu_head, rcu_head); - kfree(lrh->ptr); + kfree(container_of(head, struct listeners, rcu)); } int __netlink_change_ngroups(struct sock *sk, unsigned int groups) { - unsigned long *listeners, *old = NULL; - struct listeners_rcu_head *old_rcu_head; + struct listeners *new, *old; struct netlink_table *tbl = &nl_table[sk->sk_protocol]; if (groups < 32) groups = 32; if (NLGRPSZ(tbl->groups) < NLGRPSZ(groups)) { - listeners = kzalloc(NLGRPSZ(groups) + - sizeof(struct listeners_rcu_head), - GFP_ATOMIC); - if (!listeners) + new = kzalloc(sizeof(*new) + NLGRPSZ(groups), GFP_ATOMIC); + if (!new) return -ENOMEM; - old = tbl->listeners; - memcpy(listeners, old, NLGRPSZ(tbl->groups)); - rcu_assign_pointer(tbl->listeners, listeners); - /* - * Free the old memory after an RCU grace period so we - * don't leak it. We use call_rcu() here in order to be - * able to call this function from atomic contexts. The - * allocation of this memory will have reserved enough - * space for struct listeners_rcu_head at the end. - */ - old_rcu_head = (void *)(tbl->listeners + - NLGRPLONGS(tbl->groups)); - old_rcu_head->ptr = old; - call_rcu(&old_rcu_head->rcu_head, netlink_free_old_listeners); + old = rcu_dereference_raw(tbl->listeners); + memcpy(new->masks, old->masks, NLGRPSZ(tbl->groups)); + rcu_assign_pointer(tbl->listeners, new); + + call_rcu(&old->rcu, listeners_free_rcu); } tbl->groups = groups; @@ -2104,18 +2088,17 @@ static void __net_exit netlink_net_exit(struct net *net) static void __init netlink_add_usersock_entry(void) { - unsigned long *listeners; + struct listeners *listeners; int groups = 32; - listeners = kzalloc(NLGRPSZ(groups) + sizeof(struct listeners_rcu_head), - GFP_KERNEL); + listeners = kzalloc(sizeof(*listeners) + NLGRPSZ(groups), GFP_KERNEL); if (!listeners) - panic("netlink_add_usersock_entry: Cannot allocate listneres\n"); + panic("netlink_add_usersock_entry: Cannot allocate listeners\n"); netlink_table_grab(); nl_table[NETLINK_USERSOCK].groups = groups; - nl_table[NETLINK_USERSOCK].listeners = listeners; + rcu_assign_pointer(nl_table[NETLINK_USERSOCK].listeners, listeners); nl_table[NETLINK_USERSOCK].module = THIS_MODULE; nl_table[NETLINK_USERSOCK].registered = 1; -- cgit v1.2.3-70-g09d2 From 154ccd82e1b871ca012e781e01566128754d8c5f Mon Sep 17 00:00:00 2001 From: David Dillow Date: Sun, 24 Oct 2010 10:20:20 +0000 Subject: typhoon: wait for RX mode commands to finish When adding VLAN devices, we can get several calls to typhoon_set_rx_mode() in quick succession. Because we didn't wait for the commands to complete, we could run out of command descriptors and fail to set the RX mode. Signed-off-by: David Dillow Signed-off-by: David S. Miller --- drivers/net/typhoon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c index 1cc67138adb..5957d4ecd86 100644 --- a/drivers/net/typhoon.c +++ b/drivers/net/typhoon.c @@ -936,7 +936,7 @@ typhoon_set_rx_mode(struct net_device *dev) filter |= TYPHOON_RX_FILTER_MCAST_HASH; } - INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER); + INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER); xp_cmd.parm1 = filter; typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL); } -- cgit v1.2.3-70-g09d2 From fd59cba4f0d80a6dc4cc7372f03af905b1758e03 Mon Sep 17 00:00:00 2001 From: David Dillow Date: Sun, 24 Oct 2010 10:20:21 +0000 Subject: typhoon: update to new VLAN acceleration model Also correct the byteswapping as we keep the TCI in host order. Signed-off-by: David Dillow Signed-off-by: David S. Miller --- drivers/net/typhoon.c | 88 +++++++++++++++------------------------------------ 1 file changed, 25 insertions(+), 63 deletions(-) diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c index 5957d4ecd86..b550da008a0 100644 --- a/drivers/net/typhoon.c +++ b/drivers/net/typhoon.c @@ -24,10 +24,6 @@ 3XP Processor. It has been tested on x86 and sparc64. KNOWN ISSUES: - *) The current firmware always strips the VLAN tag off, even if - we tell it not to. You should filter VLANs at the switch - as a workaround (good practice in any event) until we can - get this fixed. *) Cannot DMA Rx packets to a 2 byte aligned address. Also firmware issue. Hopefully 3Com will fix it. *) Waiting for a command response takes 8ms due to non-preemptable @@ -280,8 +276,6 @@ struct typhoon { struct pci_dev * pdev; struct net_device * dev; struct napi_struct napi; - spinlock_t state_lock; - struct vlan_group * vlgrp; struct basic_ring rxHiRing; struct basic_ring rxBuffRing; struct rxbuff_ent rxbuffers[RXENT_ENTRIES]; @@ -695,44 +689,6 @@ out: return err; } -static void -typhoon_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) -{ - struct typhoon *tp = netdev_priv(dev); - struct cmd_desc xp_cmd; - int err; - - spin_lock_bh(&tp->state_lock); - if(!tp->vlgrp != !grp) { - /* We've either been turned on for the first time, or we've - * been turned off. Update the 3XP. - */ - if(grp) - tp->offload |= TYPHOON_OFFLOAD_VLAN; - else - tp->offload &= ~TYPHOON_OFFLOAD_VLAN; - - /* If the interface is up, the runtime is running -- and we - * must be up for the vlan core to call us. - * - * Do the command outside of the spin lock, as it is slow. - */ - INIT_COMMAND_WITH_RESPONSE(&xp_cmd, - TYPHOON_CMD_SET_OFFLOAD_TASKS); - xp_cmd.parm2 = tp->offload; - xp_cmd.parm3 = tp->offload; - spin_unlock_bh(&tp->state_lock); - err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL); - if(err < 0) - netdev_err(tp->dev, "vlan offload error %d\n", -err); - spin_lock_bh(&tp->state_lock); - } - - /* now make the change visible */ - tp->vlgrp = grp; - spin_unlock_bh(&tp->state_lock); -} - static inline void typhoon_tso_fill(struct sk_buff *skb, struct transmit_ring *txRing, u32 ring_dma) @@ -818,7 +774,7 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev) first_txd->processFlags |= TYPHOON_TX_PF_INSERT_VLAN | TYPHOON_TX_PF_VLAN_PRIORITY; first_txd->processFlags |= - cpu_to_le32(ntohs(vlan_tx_tag_get(skb)) << + cpu_to_le32(htons(vlan_tx_tag_get(skb)) << TYPHOON_TX_PF_VLAN_TAG_SHIFT); } @@ -1198,6 +1154,20 @@ typhoon_get_rx_csum(struct net_device *dev) return 1; } +static int +typhoon_set_flags(struct net_device *dev, u32 data) +{ + /* There's no way to turn off the RX VLAN offloading and stripping + * on the current 3XP firmware -- it does not respect the offload + * settings -- so we only allow the user to toggle the TX processing. + */ + if (!(data & ETH_FLAG_RXVLAN)) + return -EINVAL; + + return ethtool_op_set_flags(dev, data, + ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN); +} + static void typhoon_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering) { @@ -1224,6 +1194,8 @@ static const struct ethtool_ops typhoon_ethtool_ops = { .set_sg = ethtool_op_set_sg, .set_tso = ethtool_op_set_tso, .get_ringparam = typhoon_get_ringparam, + .set_flags = typhoon_set_flags, + .get_flags = ethtool_op_get_flags, }; static int @@ -1309,9 +1281,9 @@ typhoon_init_interface(struct typhoon *tp) tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM; tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON; + tp->offload |= TYPHOON_OFFLOAD_VLAN; spin_lock_init(&tp->command_lock); - spin_lock_init(&tp->state_lock); /* Force the writes to the shared memory area out before continuing. */ wmb(); @@ -1762,13 +1734,10 @@ typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile __le32 * read } else skb_checksum_none_assert(new_skb); - spin_lock(&tp->state_lock); - if(tp->vlgrp != NULL && rx->rxStatus & TYPHOON_RX_VLAN) - vlan_hwaccel_receive_skb(new_skb, tp->vlgrp, - ntohl(rx->vlanTag) & 0xffff); - else - netif_receive_skb(new_skb); - spin_unlock(&tp->state_lock); + if (rx->rxStatus & TYPHOON_RX_VLAN) + __vlan_hwaccel_put_tag(new_skb, + ntohl(rx->vlanTag) & 0xffff); + netif_receive_skb(new_skb); received++; budget--; @@ -1989,11 +1958,9 @@ typhoon_start_runtime(struct typhoon *tp) goto error_out; INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS); - spin_lock_bh(&tp->state_lock); xp_cmd.parm2 = tp->offload; xp_cmd.parm3 = tp->offload; err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL); - spin_unlock_bh(&tp->state_lock); if(err < 0) goto error_out; @@ -2231,13 +2198,9 @@ typhoon_suspend(struct pci_dev *pdev, pm_message_t state) if(!netif_running(dev)) return 0; - spin_lock_bh(&tp->state_lock); - if(tp->vlgrp && tp->wol_events & TYPHOON_WAKE_MAGIC_PKT) { - spin_unlock_bh(&tp->state_lock); - netdev_err(dev, "cannot do WAKE_MAGIC with VLANS\n"); - return -EBUSY; - } - spin_unlock_bh(&tp->state_lock); + /* TYPHOON_OFFLOAD_VLAN is always on now, so this doesn't work */ + if(tp->wol_events & TYPHOON_WAKE_MAGIC_PKT) + netdev_warn(dev, "cannot do WAKE_MAGIC with VLAN offloading\n"); netif_device_detach(dev); @@ -2338,7 +2301,6 @@ static const struct net_device_ops typhoon_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = typhoon_set_mac_address, .ndo_change_mtu = eth_change_mtu, - .ndo_vlan_rx_register = typhoon_vlan_rx_register, }; static int __devinit -- cgit v1.2.3-70-g09d2 From e341b2ddc1e8e5ff998ac5462dc5138775d1d492 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Sun, 24 Oct 2010 22:26:41 -0700 Subject: l2tp: static functions should not be exported Causes these build failures on PowerPC: net/l2tp/l2tp_core.c:1228: error: __ksymtab_l2tp_tunnel_closeall causes a section type conflict net/l2tp/l2tp_core.c:1228: error: __ksymtab_l2tp_tunnel_closeall causes a section type conflict net/l2tp/l2tp_core.c:1006: error: __ksymtab_l2tp_xmit_core causes a section type conflict net/l2tp/l2tp_core.c:1006: error: __ksymtab_l2tp_xmit_core causes a section type conflict net/l2tp/l2tp_core.c:847: error: __ksymtab_l2tp_udp_recv_core causes a section type conflict net/l2tp/l2tp_core.c:847: error: __ksymtab_l2tp_udp_recv_core causes a section type conflict Signed-off-by: Stephen Rothwell Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 5fb4803baf2..c64ce0a0bb0 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -844,7 +844,6 @@ error: return 1; } -EXPORT_SYMBOL_GPL(l2tp_udp_recv_core); /* UDP encapsulation receive handler. See net/ipv4/udp.c. * Return codes: @@ -1003,7 +1002,6 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, return 0; } -EXPORT_SYMBOL_GPL(l2tp_xmit_core); /* Automatically called when the skb is freed. */ @@ -1225,7 +1223,6 @@ again: } write_unlock_bh(&tunnel->hlist_lock); } -EXPORT_SYMBOL_GPL(l2tp_tunnel_closeall); /* Really kill the tunnel. * Come here only when all sessions have been cleared from the tunnel. -- cgit v1.2.3-70-g09d2 From 99b88a0ecbdbc6df03527292571b2b442965814a Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 15 Oct 2010 17:35:28 +0200 Subject: mac80211: cancel restart_work explicitly instead of depending on flush_scheduled_work() iee80211_hw->restart_work is the only work which uses the system workqueue. Instead of calling flush_scheduled_work() during iee80211_exit(), cancel the work during unregistration. This is to prepare for the deprecation and removal of flush_scheduled_work(). Signed-off-by: Tejun Heo Signed-off-by: John W. Linville --- net/mac80211/main.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 22bc42b1899..6b322fa681f 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -748,7 +748,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) hw->queues = IEEE80211_MAX_QUEUES; local->workqueue = - create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); + alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); if (!local->workqueue) { result = -ENOMEM; goto fail_workqueue; @@ -962,12 +962,6 @@ static void __exit ieee80211_exit(void) rc80211_minstrel_ht_exit(); rc80211_minstrel_exit(); - /* - * For key todo, it'll be empty by now but the work - * might still be scheduled. - */ - flush_scheduled_work(); - if (mesh_allocated) ieee80211s_stop(); -- cgit v1.2.3-70-g09d2 From 20b25744d1366762c6878d3254f93973cafe1f8e Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Fri, 15 Oct 2010 15:04:09 -0700 Subject: ath9k: Properly initialize ath_common->cc_lock. Otherwise, lockdep splats, at the least: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 2240, comm: ip Not tainted 2.6.36-rc8-wl+ #32 Call Trace: [] ? printk+0xf/0x17 [] register_lock_class+0x5a/0x29e [] ? mark_lock+0x1e/0x1de [] __lock_acquire+0xa2/0xb8c [] ? mark_lock+0x1e/0x1de [] lock_acquire+0x5a/0x78 [] ? ath9k_config+0x274/0x3d8 [ath9k] [] _raw_spin_lock_irqsave+0x2f/0x3f [] ? ath9k_config+0x274/0x3d8 [ath9k] [] ath9k_config+0x274/0x3d8 [ath9k] [] ieee80211_hw_config+0x11b/0x125 [mac80211] [] ieee80211_do_open+0x3c5/0x466 [mac80211] [] ? ieee80211_check_concurrent_iface+0x21/0x13a [mac80211] [] ieee80211_open+0x5b/0x5e [mac80211] [] __dev_open+0x80/0xae [] __dev_change_flags+0xa0/0x115 [] dev_change_flags+0x13/0x3f [] do_setlink+0x23a/0x51b [] ? register_lock_class+0x17/0x29e [] rtnl_newlink+0x269/0x431 [] ? rtnl_newlink+0x7e/0x431 [] ? mark_lock+0x1e/0x1de [] ? mark_held_locks+0x47/0x5f [] ? __mutex_lock_common+0x2bb/0x2d6 [] ? trace_hardirqs_on_caller+0x104/0x125 [] ? __mutex_lock_common+0x2cc/0x2d6 [] ? rtnl_newlink+0x0/0x431 [] rtnetlink_rcv_msg+0x182/0x198 [] ? rtnetlink_rcv_msg+0x0/0x198 [] netlink_rcv_skb+0x30/0x77 [] rtnetlink_rcv+0x1b/0x22 [] netlink_unicast+0xbe/0x119 [] netlink_sendmsg+0x234/0x24c [] __sock_sendmsg+0x51/0x5a [] sock_sendmsg+0x93/0xa7 [] ? might_fault+0x47/0x81 [] ? might_fault+0x7c/0x81 [] ? copy_from_user+0x8/0xa [] ? verify_iovec+0x3e/0x6d [] sys_sendmsg+0x149/0x193 [] ? register_lock_class+0x17/0x29e [] ? mark_lock+0x1e/0x1de [] ? __do_fault+0x1fc/0x3a5 [] ? unlock_page+0x40/0x43 [] ? __do_fault+0x379/0x3a5 [] ? lock_release_non_nested+0x86/0x1d8 [] ? might_fault+0x47/0x81 [] ? might_fault+0x47/0x81 [] sys_socketcall+0x15e/0x1a5 [] sysenter_do_call+0x12/0x38 Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/init.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index bc6c4df9712..95b41db0d86 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -577,6 +577,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid, common->hw = sc->hw; common->priv = sc; common->debug_mask = ath9k_debug; + spin_lock_init(&common->cc_lock); spin_lock_init(&sc->wiphy_lock); spin_lock_init(&sc->sc_resetlock); -- cgit v1.2.3-70-g09d2 From 9192f715bc6304b97fe06c6215d4897a5c279e81 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Fri, 15 Oct 2010 15:51:32 -0700 Subject: ath5k: Properly initialize ath_common->cc_lock. Otherwise, lockdep splats, at the least: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 0, comm: swapper Not tainted 2.6.36-rc8-wl+ #32 Call Trace: [] ? printk+0xf/0x17 [] register_lock_class+0x5a/0x29e [] __lock_acquire+0xa2/0xb8c [] ? mark_lock+0x1e/0x1de [] ? acpi_get_override_irq+0x85/0x8c [] ? trace_hardirqs_off+0xb/0xd [] lock_acquire+0x5a/0x78 [] ? ath5k_ani_calibration+0x24/0x52b [ath5k] [] _raw_spin_lock_bh+0x20/0x2f [] ? ath5k_ani_calibration+0x24/0x52b [ath5k] [] ath5k_ani_calibration+0x24/0x52b [ath5k] [] ? tasklet_action+0x3b/0xc6 [] ath5k_tasklet_ani+0x18/0x22 [ath5k] [] tasklet_action+0x73/0xc6 [] __do_softirq+0x86/0x111 [] do_softirq+0x36/0x5a [] irq_exit+0x35/0x69 [] do_IRQ+0x86/0x9a [] common_interrupt+0x2e/0x40 [] ? do_adjtimex+0x223/0x55e [] ? mwait_idle+0x5c/0x6c [] cpu_idle+0x4e/0x6b [] rest_init+0x8d/0x92 [] start_kernel+0x320/0x325 [] i386_start_kernel+0xd0/0xd7 Signed-off-by: Ben Greear Acked-by: Bruno Randolf Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/base.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index f1ae75d35d5..8251946842e 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -3580,6 +3580,7 @@ ath5k_pci_probe(struct pci_dev *pdev, common->ah = sc->ah; common->hw = hw; common->cachelsz = csz << 2; /* convert to bytes */ + spin_lock_init(&common->cc_lock); /* Initialize device */ ret = ath5k_hw_attach(sc); -- cgit v1.2.3-70-g09d2 From cae7f953e8afa9b1ce234fd0907183b643cc5ab8 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 16 Oct 2010 01:38:46 +0200 Subject: carl9170: fix async command buffer leak If __carl9170_exec_cmd fails to upload an asynchronous command to the device, the functions: carl9170_reboot and carl9170_powersave will leak the temporary command assembly buffer. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/ath/carl9170/usb.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/ath/carl9170/usb.c b/drivers/net/wireless/ath/carl9170/usb.c index c7f6193934e..d8607f4c144 100644 --- a/drivers/net/wireless/ath/carl9170/usb.c +++ b/drivers/net/wireless/ath/carl9170/usb.c @@ -591,16 +591,23 @@ int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, const bool free_buf) { struct urb *urb; + int err = 0; - if (!IS_INITIALIZED(ar)) - return -EPERM; + if (!IS_INITIALIZED(ar)) { + err = -EPERM; + goto err_free; + } - if (WARN_ON(cmd->hdr.len > CARL9170_MAX_CMD_LEN - 4)) - return -EINVAL; + if (WARN_ON(cmd->hdr.len > CARL9170_MAX_CMD_LEN - 4)) { + err = -EINVAL; + goto err_free; + } urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) - return -ENOMEM; + if (!urb) { + err = -ENOMEM; + goto err_free; + } usb_fill_int_urb(urb, ar->udev, usb_sndintpipe(ar->udev, AR9170_USB_EP_CMD), cmd, cmd->hdr.len + 4, @@ -613,6 +620,12 @@ int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, usb_free_urb(urb); return carl9170_usb_submit_cmd_urb(ar); + +err_free: + if (free_buf) + kfree(cmd); + + return err; } int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids cmd, -- cgit v1.2.3-70-g09d2 From 5f4e6b2d3c74c1adda1cbfd9d9d30da22c7484fc Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 16 Oct 2010 18:49:15 +0200 Subject: mac80211: don't sanitize invalid rates I found this bug while poking around with a pure-gn AP. Commit: cfg80211/mac80211: Use more generic bitrate mask for rate control Added some sanity checks to ensure that each tx rate index is included in the configured mask and it would change any rate indexes if it wasn't. But, the current implementation doesn't take into account that the invalid rate index "-1" has a special meaning (= no further attempts) and it should not be "changed". Signed-off-by: Christian Lamparter Cc: stable@kernel.org Signed-off-by: John W. Linville --- net/mac80211/rate.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 809cf230d25..33f76993da0 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -329,6 +329,9 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, * if needed. */ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { + /* Skip invalid rates */ + if (info->control.rates[i].idx < 0) + break; /* Rate masking supports only legacy rates for now */ if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) continue; -- cgit v1.2.3-70-g09d2 From 3d2f2cd066e9e2b7e43d516d92e66dac2fc46aa0 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 16 Oct 2010 20:47:50 +0200 Subject: carl9170: fix memory leak issue in async cmd macro wrappers This patch continues where the previous commit: "carl9170: fix async command buffer leak" left off. Similar to carl9170_reboot/carl9170_powersave, the carl9170_async_regwrite* macros would leak the temporary command buffer, if __carl9170_exec_cmd fails to upload the command to the device. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/ath/carl9170/cmd.h | 51 ++++++++++++++++++--------------- 1 file changed, 28 insertions(+), 23 deletions(-) diff --git a/drivers/net/wireless/ath/carl9170/cmd.h b/drivers/net/wireless/ath/carl9170/cmd.h index f78728c3829..568174c71b9 100644 --- a/drivers/net/wireless/ath/carl9170/cmd.h +++ b/drivers/net/wireless/ath/carl9170/cmd.h @@ -116,8 +116,9 @@ __regwrite_out : \ } while (0); -#define carl9170_async_get_buf() \ +#define carl9170_async_regwrite_get_buf() \ do { \ + __nreg = 0; \ __cmd = carl9170_cmd_buf(__carl, CARL9170_CMD_WREG_ASYNC, \ CARL9170_MAX_CMD_PAYLOAD_LEN); \ if (__cmd == NULL) { \ @@ -128,38 +129,42 @@ do { \ #define carl9170_async_regwrite_begin(carl) \ do { \ - int __nreg = 0, __err = 0; \ struct ar9170 *__carl = carl; \ struct carl9170_cmd *__cmd; \ - carl9170_async_get_buf(); \ + unsigned int __nreg; \ + int __err = 0; \ + carl9170_async_regwrite_get_buf(); \ + +#define carl9170_async_regwrite_flush() \ +do { \ + if (__cmd == NULL || __nreg == 0) \ + break; \ + \ + if (IS_ACCEPTING_CMD(__carl) && __nreg) { \ + __cmd->hdr.len = 8 * __nreg; \ + __err = __carl9170_exec_cmd(__carl, __cmd, true); \ + __cmd = NULL; \ + break; \ + } \ + goto __async_regwrite_out; \ +} while (0) #define carl9170_async_regwrite(r, v) do { \ + if (__cmd == NULL) \ + carl9170_async_regwrite_get_buf(); \ __cmd->wreg.regs[__nreg].addr = cpu_to_le32(r); \ __cmd->wreg.regs[__nreg].val = cpu_to_le32(v); \ __nreg++; \ - if ((__nreg >= PAYLOAD_MAX/2)) { \ - if (IS_ACCEPTING_CMD(__carl)) { \ - __cmd->hdr.len = 8 * __nreg; \ - __err = __carl9170_exec_cmd(__carl, __cmd, true);\ - __cmd = NULL; \ - carl9170_async_get_buf(); \ - } else { \ - goto __async_regwrite_out; \ - } \ - __nreg = 0; \ - if (__err) \ - goto __async_regwrite_out; \ - } \ + if ((__nreg >= PAYLOAD_MAX / 2)) \ + carl9170_async_regwrite_flush(); \ } while (0) -#define carl9170_async_regwrite_finish() \ +#define carl9170_async_regwrite_finish() do { \ __async_regwrite_out : \ - if (__err == 0 && __nreg) { \ - __cmd->hdr.len = 8 * __nreg; \ - if (IS_ACCEPTING_CMD(__carl)) \ - __err = __carl9170_exec_cmd(__carl, __cmd, true);\ - __nreg = 0; \ - } + if (__cmd != NULL && __err == 0) \ + carl9170_async_regwrite_flush(); \ + kfree(__cmd); \ +} while (0) \ #define carl9170_async_regwrite_result() \ __err; \ -- cgit v1.2.3-70-g09d2 From a171fba491f54216e356efa46096171a7ed01d10 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 18 Oct 2010 17:44:51 -0700 Subject: cfg80211: fix regression on processing country IEs The patch 4f366c5: wireless: only use alpha2 regulatory information from country IE removed some complex intersection we were always doing between the AP's country IE info and what we got from CRDA. When CRDA sent us back a regulatory domain we would do some sanity checks on that regulatory domain response we just got. Part of these sanity checks included checking that we already had performed an intersection for the request of NL80211_REGDOM_SET_BY_COUNTRY_IE type. This mean that cfg80211 was only processing country IEs for cases where we already had an intersection, but since we removed enforcing this this is no longer required, we should just apply the country IE country hint with the data received from CRDA. This patch has fixes intended for kernels >= 2.6.36. Cc: stable@kernel.org Reported-by: Easwar Krishnan Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- net/wireless/reg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/reg.c b/net/wireless/reg.c index d14bbf960c1..4b9f8912526 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1167,7 +1167,7 @@ static int ignore_request(struct wiphy *wiphy, return 0; return -EALREADY; } - return REG_INTERSECT; + return 0; case NL80211_REGDOM_SET_BY_DRIVER: if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE) { if (regdom_changes(pending_request->alpha2)) -- cgit v1.2.3-70-g09d2 From 0dfa6dbb7372e581d3beb38b11772152114796b8 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 18 Oct 2010 22:47:54 -0700 Subject: ath9k_hw: Fix TX carrier leakage for IEEE compliance on AR9003 2.2 This updates the initvals for the AR9003 2.2 chipsets. The initvals are the initial register values we use for our registers upon hardware reset. This synchs up the initvals to match what our latest recommendation from our systems engineering team. The description of changes in this update: Improves ability to support very strong Rx conditions. Enhances DFS support for AP-mode. Improves performance of Tx carrier leak calibration. Adds support for Japan channel 14 Tx filtering requirements. Improves Tx power accuracy. Impact: Update required to address degraded throughput at very short range. Update required for AP-mode DFS certification. Update required to comply to IEEE Tx carrier leak specification. May not meet expected +/- 2 dB Tx power accuracy without update. The most important fix here would be the TX carrier leakage required to comply with IEEE 802.11 specifications. The group of changes have been tested all together in one release. References: Osprey 2.2 header file ver #33 Checksums: $ ./initvals -f ar9003-2p2 0x000000004a488fc7 ar9300_2p2_radio_postamble 0x0000000046cb1300 ar9300Modes_lowest_ob_db_tx_gain_table_2p2 0x00000000e912711f ar9300Modes_fast_clock_2p2 0x0000000037ac0ee8 ar9300_2p2_radio_core 0x00000000047a7700 ar9300Common_rx_gain_table_merlin_2p2 0x0000000003f783bb ar9300_2p2_mac_postamble 0x00000000301fc841 ar9300_2p2_soc_postamble 0x000000005ec8075f ar9200_merlin_2p2_radio_core 0x0000000083372ffa ar9300_2p2_baseband_postamble 0x00000000c4f59974 ar9300_2p2_baseband_core 0x00000000e20d2e72 ar9300Modes_high_power_tx_gain_table_2p2 0x000000007fd55c70 ar9300Modes_high_ob_db_tx_gain_table_2p2 0x0000000029495000 ar9300Common_rx_gain_table_2p2 0x0000000042cb1300 ar9300Modes_low_ob_db_tx_gain_table_2p2 0x00000000c4739cd6 ar9300_2p2_mac_core 0x000000003521a300 ar9300Common_wo_xlna_rx_gain_table_2p2 0x00000000a15ccf1b ar9300_2p2_soc_preamble 0x0000000029734396 ar9300PciePhy_pll_on_clkreq_disable_L1_2p2 0x000000002d834396 ar9300PciePhy_clkreq_enable_L1_2p2 0x0000000029834396 ar9300PciePhy_clkreq_disable_L1_2p2 $ ./initvals -f ar9003-2p2 | sha1sum 0ceddb5cf66737610fb51f04cf3e9ff71870c7b4 - Cc: stable@kernel.org Cc: Yixiang Li Cc: Don Breslin Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- .../net/wireless/ath/ath9k/ar9003_2p2_initvals.h | 191 +++++++++++++++------ 1 file changed, 135 insertions(+), 56 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h index ec98ab50748..a14a5e43cf5 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h +++ b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h @@ -34,6 +34,10 @@ static const u32 ar9300_2p2_radio_postamble[][5] = { static const u32 ar9300Modes_lowest_ob_db_tx_gain_table_2p2[][5] = { /* Addr 5G_HT20 5G_HT40 2G_HT40 2G_HT20 */ + {0x0000a2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000a2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000a2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000a2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a410, 0x000050d9, 0x000050d9, 0x000050d9, 0x000050d9}, {0x0000a500, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a504, 0x06000003, 0x06000003, 0x04000002, 0x04000002}, @@ -99,6 +103,30 @@ static const u32 ar9300Modes_lowest_ob_db_tx_gain_table_2p2[][5] = { {0x0000a5f4, 0x7782b08c, 0x7782b08c, 0x5d801eec, 0x5d801eec}, {0x0000a5f8, 0x7782b08c, 0x7782b08c, 0x5d801eec, 0x5d801eec}, {0x0000a5fc, 0x7782b08c, 0x7782b08c, 0x5d801eec, 0x5d801eec}, + {0x0000a600, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a604, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a608, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a60c, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a610, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a614, 0x01404000, 0x01404000, 0x01404000, 0x01404000}, + {0x0000a618, 0x01404501, 0x01404501, 0x01404501, 0x01404501}, + {0x0000a61c, 0x02008802, 0x02008802, 0x02008501, 0x02008501}, + {0x0000a620, 0x0300cc03, 0x0300cc03, 0x0280ca03, 0x0280ca03}, + {0x0000a624, 0x0300cc03, 0x0300cc03, 0x03010c04, 0x03010c04}, + {0x0000a628, 0x0300cc03, 0x0300cc03, 0x04014c04, 0x04014c04}, + {0x0000a62c, 0x03810c03, 0x03810c03, 0x04015005, 0x04015005}, + {0x0000a630, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000a634, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000a638, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000a63c, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000b2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000b2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000b2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000b2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000c2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000c2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000c2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000c2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x00016044, 0x012492d4, 0x012492d4, 0x012492d4, 0x012492d4}, {0x00016048, 0x62480001, 0x62480001, 0x62480001, 0x62480001}, {0x00016068, 0x6db6db6c, 0x6db6db6c, 0x6db6db6c, 0x6db6db6c}, @@ -118,7 +146,7 @@ static const u32 ar9300Modes_fast_clock_2p2[][3] = { {0x00008014, 0x044c044c, 0x08980898}, {0x0000801c, 0x148ec02b, 0x148ec057}, {0x00008318, 0x000044c0, 0x00008980}, - {0x00009e00, 0x03721821, 0x03721821}, + {0x00009e00, 0x0372131c, 0x0372131c}, {0x0000a230, 0x0000000b, 0x00000016}, {0x0000a254, 0x00000898, 0x00001130}, }; @@ -595,15 +623,16 @@ static const u32 ar9300_2p2_baseband_postamble[][5] = { {0x0000982c, 0x05eea6d4, 0x05eea6d4, 0x05eea6d4, 0x05eea6d4}, {0x00009830, 0x0000059c, 0x0000059c, 0x0000119c, 0x0000119c}, {0x00009c00, 0x000000c4, 0x000000c4, 0x000000c4, 0x000000c4}, - {0x00009e00, 0x0372161e, 0x0372161e, 0x037216a0, 0x037216a0}, - {0x00009e04, 0x00802020, 0x00802020, 0x00802020, 0x00802020}, + {0x00009e00, 0x0372111a, 0x0372111a, 0x037216a0, 0x037216a0}, + {0x00009e04, 0x001c2020, 0x001c2020, 0x001c2020, 0x001c2020}, {0x00009e0c, 0x6c4000e2, 0x6d4000e2, 0x6d4000e2, 0x6c4000e2}, {0x00009e10, 0x7ec88d2e, 0x7ec88d2e, 0x7ec84d2e, 0x7ec84d2e}, - {0x00009e14, 0x31395d5e, 0x3139605e, 0x3139605e, 0x31395d5e}, + {0x00009e14, 0x37b95d5e, 0x37b9605e, 0x3379605e, 0x33795d5e}, {0x00009e18, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x00009e1c, 0x0001cf9c, 0x0001cf9c, 0x00021f9c, 0x00021f9c}, {0x00009e20, 0x000003b5, 0x000003b5, 0x000003ce, 0x000003ce}, {0x00009e2c, 0x0000001c, 0x0000001c, 0x00000021, 0x00000021}, + {0x00009e3c, 0xcf946220, 0xcf946220, 0xcf946222, 0xcf946222}, {0x00009e44, 0x02321e27, 0x02321e27, 0x02291e27, 0x02291e27}, {0x00009e48, 0x5030201a, 0x5030201a, 0x50302012, 0x50302012}, {0x00009fc8, 0x0003f000, 0x0003f000, 0x0001a000, 0x0001a000}, @@ -624,16 +653,16 @@ static const u32 ar9300_2p2_baseband_postamble[][5] = { {0x0000a28c, 0x00022222, 0x00022222, 0x00022222, 0x00022222}, {0x0000a2c4, 0x00158d18, 0x00158d18, 0x00158d18, 0x00158d18}, {0x0000a2d0, 0x00071981, 0x00071981, 0x00071981, 0x00071982}, - {0x0000a2d8, 0xf999a83a, 0xf999a83a, 0xf999a83a, 0xf999a83a}, + {0x0000a2d8, 0x7999a83a, 0x7999a83a, 0x7999a83a, 0x7999a83a}, {0x0000a358, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a830, 0x0000019c, 0x0000019c, 0x0000019c, 0x0000019c}, - {0x0000ae04, 0x00800000, 0x00800000, 0x00800000, 0x00800000}, + {0x0000ae04, 0x001c0000, 0x001c0000, 0x001c0000, 0x001c0000}, {0x0000ae18, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000ae1c, 0x0000019c, 0x0000019c, 0x0000019c, 0x0000019c}, {0x0000ae20, 0x000001b5, 0x000001b5, 0x000001ce, 0x000001ce}, {0x0000b284, 0x00000000, 0x00000000, 0x00000150, 0x00000150}, {0x0000b830, 0x0000019c, 0x0000019c, 0x0000019c, 0x0000019c}, - {0x0000be04, 0x00800000, 0x00800000, 0x00800000, 0x00800000}, + {0x0000be04, 0x001c0000, 0x001c0000, 0x001c0000, 0x001c0000}, {0x0000be18, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000be1c, 0x0000019c, 0x0000019c, 0x0000019c, 0x0000019c}, {0x0000be20, 0x000001b5, 0x000001b5, 0x000001ce, 0x000001ce}, @@ -649,13 +678,13 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x00009814, 0x9280c00a}, {0x00009818, 0x00000000}, {0x0000981c, 0x00020028}, - {0x00009834, 0x5f3ca3de}, + {0x00009834, 0x6400a290}, {0x00009838, 0x0108ecff}, {0x0000983c, 0x14750600}, {0x00009880, 0x201fff00}, {0x00009884, 0x00001042}, {0x000098a4, 0x00200400}, - {0x000098b0, 0x52440bbe}, + {0x000098b0, 0x32840bbe}, {0x000098d0, 0x004b6a8e}, {0x000098d4, 0x00000820}, {0x000098dc, 0x00000000}, @@ -681,7 +710,6 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x00009e30, 0x06336f77}, {0x00009e34, 0x6af6532f}, {0x00009e38, 0x0cc80c00}, - {0x00009e3c, 0xcf946222}, {0x00009e40, 0x0d261820}, {0x00009e4c, 0x00001004}, {0x00009e50, 0x00ff03f1}, @@ -694,7 +722,7 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x0000a220, 0x00000000}, {0x0000a224, 0x00000000}, {0x0000a228, 0x10002310}, - {0x0000a22c, 0x01036a1e}, + {0x0000a22c, 0x01036a27}, {0x0000a23c, 0x00000000}, {0x0000a244, 0x0c000000}, {0x0000a2a0, 0x00000001}, @@ -702,10 +730,6 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x0000a2c8, 0x00000000}, {0x0000a2cc, 0x18c43433}, {0x0000a2d4, 0x00000000}, - {0x0000a2dc, 0x00000000}, - {0x0000a2e0, 0x00000000}, - {0x0000a2e4, 0x00000000}, - {0x0000a2e8, 0x00000000}, {0x0000a2ec, 0x00000000}, {0x0000a2f0, 0x00000000}, {0x0000a2f4, 0x00000000}, @@ -753,33 +777,17 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x0000a430, 0x1ce739ce}, {0x0000a434, 0x00000000}, {0x0000a438, 0x00001801}, - {0x0000a43c, 0x00000000}, + {0x0000a43c, 0x00100000}, {0x0000a440, 0x00000000}, {0x0000a444, 0x00000000}, {0x0000a448, 0x06000080}, {0x0000a44c, 0x00000001}, {0x0000a450, 0x00010000}, {0x0000a458, 0x00000000}, - {0x0000a600, 0x00000000}, - {0x0000a604, 0x00000000}, - {0x0000a608, 0x00000000}, - {0x0000a60c, 0x00000000}, - {0x0000a610, 0x00000000}, - {0x0000a614, 0x00000000}, - {0x0000a618, 0x00000000}, - {0x0000a61c, 0x00000000}, - {0x0000a620, 0x00000000}, - {0x0000a624, 0x00000000}, - {0x0000a628, 0x00000000}, - {0x0000a62c, 0x00000000}, - {0x0000a630, 0x00000000}, - {0x0000a634, 0x00000000}, - {0x0000a638, 0x00000000}, - {0x0000a63c, 0x00000000}, {0x0000a640, 0x00000000}, {0x0000a644, 0x3fad9d74}, {0x0000a648, 0x0048060a}, - {0x0000a64c, 0x00000637}, + {0x0000a64c, 0x00003c37}, {0x0000a670, 0x03020100}, {0x0000a674, 0x09080504}, {0x0000a678, 0x0d0c0b0a}, @@ -802,10 +810,6 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x0000a8f4, 0x00000000}, {0x0000b2d0, 0x00000080}, {0x0000b2d4, 0x00000000}, - {0x0000b2dc, 0x00000000}, - {0x0000b2e0, 0x00000000}, - {0x0000b2e4, 0x00000000}, - {0x0000b2e8, 0x00000000}, {0x0000b2ec, 0x00000000}, {0x0000b2f0, 0x00000000}, {0x0000b2f4, 0x00000000}, @@ -820,10 +824,6 @@ static const u32 ar9300_2p2_baseband_core[][2] = { {0x0000b8f4, 0x00000000}, {0x0000c2d0, 0x00000080}, {0x0000c2d4, 0x00000000}, - {0x0000c2dc, 0x00000000}, - {0x0000c2e0, 0x00000000}, - {0x0000c2e4, 0x00000000}, - {0x0000c2e8, 0x00000000}, {0x0000c2ec, 0x00000000}, {0x0000c2f0, 0x00000000}, {0x0000c2f4, 0x00000000}, @@ -835,6 +835,10 @@ static const u32 ar9300_2p2_baseband_core[][2] = { static const u32 ar9300Modes_high_power_tx_gain_table_2p2[][5] = { /* Addr 5G_HT20 5G_HT40 2G_HT40 2G_HT20 */ + {0x0000a2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000a2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000a2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000a2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a410, 0x000050d8, 0x000050d8, 0x000050d9, 0x000050d9}, {0x0000a500, 0x00002220, 0x00002220, 0x00000000, 0x00000000}, {0x0000a504, 0x04002222, 0x04002222, 0x04000002, 0x04000002}, @@ -855,7 +859,7 @@ static const u32 ar9300Modes_high_power_tx_gain_table_2p2[][5] = { {0x0000a540, 0x49005e72, 0x49005e72, 0x38001660, 0x38001660}, {0x0000a544, 0x4e005eb2, 0x4e005eb2, 0x3b001861, 0x3b001861}, {0x0000a548, 0x53005f12, 0x53005f12, 0x3e001a81, 0x3e001a81}, - {0x0000a54c, 0x59025eb5, 0x59025eb5, 0x42001a83, 0x42001a83}, + {0x0000a54c, 0x59025eb2, 0x59025eb2, 0x42001a83, 0x42001a83}, {0x0000a550, 0x5e025f12, 0x5e025f12, 0x44001c84, 0x44001c84}, {0x0000a554, 0x61027f12, 0x61027f12, 0x48001ce3, 0x48001ce3}, {0x0000a558, 0x6702bf12, 0x6702bf12, 0x4c001ce5, 0x4c001ce5}, @@ -900,6 +904,30 @@ static const u32 ar9300Modes_high_power_tx_gain_table_2p2[][5] = { {0x0000a5f4, 0x6f82bf16, 0x6f82bf16, 0x56801eec, 0x56801eec}, {0x0000a5f8, 0x6f82bf16, 0x6f82bf16, 0x56801eec, 0x56801eec}, {0x0000a5fc, 0x6f82bf16, 0x6f82bf16, 0x56801eec, 0x56801eec}, + {0x0000a600, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a604, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a608, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a60c, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a610, 0x00804000, 0x00804000, 0x00000000, 0x00000000}, + {0x0000a614, 0x00804201, 0x00804201, 0x01404000, 0x01404000}, + {0x0000a618, 0x0280c802, 0x0280c802, 0x01404501, 0x01404501}, + {0x0000a61c, 0x0280ca03, 0x0280ca03, 0x02008501, 0x02008501}, + {0x0000a620, 0x04c15104, 0x04c15104, 0x0280ca03, 0x0280ca03}, + {0x0000a624, 0x04c15305, 0x04c15305, 0x03010c04, 0x03010c04}, + {0x0000a628, 0x04c15305, 0x04c15305, 0x04014c04, 0x04014c04}, + {0x0000a62c, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a630, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a634, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a638, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a63c, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000b2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000b2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000b2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000b2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000c2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000c2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000c2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000c2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x00016044, 0x056db2e6, 0x056db2e6, 0x056db2e6, 0x056db2e6}, {0x00016048, 0xae480001, 0xae480001, 0xae480001, 0xae480001}, {0x00016068, 0x6eb6db6c, 0x6eb6db6c, 0x6eb6db6c, 0x6eb6db6c}, @@ -913,6 +941,10 @@ static const u32 ar9300Modes_high_power_tx_gain_table_2p2[][5] = { static const u32 ar9300Modes_high_ob_db_tx_gain_table_2p2[][5] = { /* Addr 5G_HT20 5G_HT40 2G_HT40 2G_HT20 */ + {0x0000a2dc, 0x01feee00, 0x01feee00, 0x00637800, 0x00637800}, + {0x0000a2e0, 0x0000f000, 0x0000f000, 0x03838000, 0x03838000}, + {0x0000a2e4, 0x01ff0000, 0x01ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000a2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a410, 0x000050d8, 0x000050d8, 0x000050d9, 0x000050d9}, {0x0000a500, 0x00002220, 0x00002220, 0x00000000, 0x00000000}, {0x0000a504, 0x04002222, 0x04002222, 0x04000002, 0x04000002}, @@ -933,7 +965,7 @@ static const u32 ar9300Modes_high_ob_db_tx_gain_table_2p2[][5] = { {0x0000a540, 0x49005e72, 0x49005e72, 0x38001660, 0x38001660}, {0x0000a544, 0x4e005eb2, 0x4e005eb2, 0x3b001861, 0x3b001861}, {0x0000a548, 0x53005f12, 0x53005f12, 0x3e001a81, 0x3e001a81}, - {0x0000a54c, 0x59025eb5, 0x59025eb5, 0x42001a83, 0x42001a83}, + {0x0000a54c, 0x59025eb2, 0x59025eb2, 0x42001a83, 0x42001a83}, {0x0000a550, 0x5e025f12, 0x5e025f12, 0x44001c84, 0x44001c84}, {0x0000a554, 0x61027f12, 0x61027f12, 0x48001ce3, 0x48001ce3}, {0x0000a558, 0x6702bf12, 0x6702bf12, 0x4c001ce5, 0x4c001ce5}, @@ -978,6 +1010,30 @@ static const u32 ar9300Modes_high_ob_db_tx_gain_table_2p2[][5] = { {0x0000a5f4, 0x6f82bf16, 0x6f82bf16, 0x56801eec, 0x56801eec}, {0x0000a5f8, 0x6f82bf16, 0x6f82bf16, 0x56801eec, 0x56801eec}, {0x0000a5fc, 0x6f82bf16, 0x6f82bf16, 0x56801eec, 0x56801eec}, + {0x0000a600, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a604, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a608, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a60c, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a610, 0x00804000, 0x00804000, 0x00000000, 0x00000000}, + {0x0000a614, 0x00804201, 0x00804201, 0x01404000, 0x01404000}, + {0x0000a618, 0x0280c802, 0x0280c802, 0x01404501, 0x01404501}, + {0x0000a61c, 0x0280ca03, 0x0280ca03, 0x02008501, 0x02008501}, + {0x0000a620, 0x04c15104, 0x04c15104, 0x0280ca03, 0x0280ca03}, + {0x0000a624, 0x04c15305, 0x04c15305, 0x03010c04, 0x03010c04}, + {0x0000a628, 0x04c15305, 0x04c15305, 0x04014c04, 0x04014c04}, + {0x0000a62c, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a630, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a634, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a638, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000a63c, 0x04c15305, 0x04c15305, 0x04015005, 0x04015005}, + {0x0000b2dc, 0x01feee00, 0x01feee00, 0x00637800, 0x00637800}, + {0x0000b2e0, 0x0000f000, 0x0000f000, 0x03838000, 0x03838000}, + {0x0000b2e4, 0x01ff0000, 0x01ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000b2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000c2dc, 0x01feee00, 0x01feee00, 0x00637800, 0x00637800}, + {0x0000c2e0, 0x0000f000, 0x0000f000, 0x03838000, 0x03838000}, + {0x0000c2e4, 0x01ff0000, 0x01ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000c2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x00016044, 0x056db2e4, 0x056db2e4, 0x056db2e4, 0x056db2e4}, {0x00016048, 0x8e480001, 0x8e480001, 0x8e480001, 0x8e480001}, {0x00016068, 0x6db6db6c, 0x6db6db6c, 0x6db6db6c, 0x6db6db6c}, @@ -1151,14 +1207,14 @@ static const u32 ar9300Common_rx_gain_table_2p2[][2] = { {0x0000b074, 0x00000000}, {0x0000b078, 0x00000000}, {0x0000b07c, 0x00000000}, - {0x0000b080, 0x32323232}, - {0x0000b084, 0x2f2f3232}, - {0x0000b088, 0x23282a2d}, - {0x0000b08c, 0x1c1e2123}, - {0x0000b090, 0x14171919}, - {0x0000b094, 0x0e0e1214}, - {0x0000b098, 0x03050707}, - {0x0000b09c, 0x00030303}, + {0x0000b080, 0x2a2d2f32}, + {0x0000b084, 0x21232328}, + {0x0000b088, 0x19191c1e}, + {0x0000b08c, 0x12141417}, + {0x0000b090, 0x07070e0e}, + {0x0000b094, 0x03030305}, + {0x0000b098, 0x00000003}, + {0x0000b09c, 0x00000000}, {0x0000b0a0, 0x00000000}, {0x0000b0a4, 0x00000000}, {0x0000b0a8, 0x00000000}, @@ -1251,6 +1307,10 @@ static const u32 ar9300Common_rx_gain_table_2p2[][2] = { static const u32 ar9300Modes_low_ob_db_tx_gain_table_2p2[][5] = { /* Addr 5G_HT20 5G_HT40 2G_HT40 2G_HT20 */ + {0x0000a2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000a2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000a2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000a2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a410, 0x000050d9, 0x000050d9, 0x000050d9, 0x000050d9}, {0x0000a500, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x0000a504, 0x06000003, 0x06000003, 0x04000002, 0x04000002}, @@ -1316,6 +1376,30 @@ static const u32 ar9300Modes_low_ob_db_tx_gain_table_2p2[][5] = { {0x0000a5f4, 0x7782b08c, 0x7782b08c, 0x5d801eec, 0x5d801eec}, {0x0000a5f8, 0x7782b08c, 0x7782b08c, 0x5d801eec, 0x5d801eec}, {0x0000a5fc, 0x7782b08c, 0x7782b08c, 0x5d801eec, 0x5d801eec}, + {0x0000a600, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a604, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a608, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a60c, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a610, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000a614, 0x01404000, 0x01404000, 0x01404000, 0x01404000}, + {0x0000a618, 0x01404501, 0x01404501, 0x01404501, 0x01404501}, + {0x0000a61c, 0x02008802, 0x02008802, 0x02008501, 0x02008501}, + {0x0000a620, 0x0300cc03, 0x0300cc03, 0x0280ca03, 0x0280ca03}, + {0x0000a624, 0x0300cc03, 0x0300cc03, 0x03010c04, 0x03010c04}, + {0x0000a628, 0x0300cc03, 0x0300cc03, 0x04014c04, 0x04014c04}, + {0x0000a62c, 0x03810c03, 0x03810c03, 0x04015005, 0x04015005}, + {0x0000a630, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000a634, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000a638, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000a63c, 0x03810e04, 0x03810e04, 0x04015005, 0x04015005}, + {0x0000b2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000b2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000b2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000b2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, + {0x0000c2dc, 0x0380c7fc, 0x0380c7fc, 0x00637800, 0x00637800}, + {0x0000c2e0, 0x0000f800, 0x0000f800, 0x03838000, 0x03838000}, + {0x0000c2e4, 0x03ff0000, 0x03ff0000, 0x03fc0000, 0x03fc0000}, + {0x0000c2e8, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, {0x00016044, 0x012492d4, 0x012492d4, 0x012492d4, 0x012492d4}, {0x00016048, 0x66480001, 0x66480001, 0x66480001, 0x66480001}, {0x00016068, 0x6db6db6c, 0x6db6db6c, 0x6db6db6c, 0x6db6db6c}, @@ -1414,15 +1498,10 @@ static const u32 ar9300_2p2_mac_core[][2] = { {0x00008144, 0xffffffff}, {0x00008168, 0x00000000}, {0x0000816c, 0x00000000}, - {0x00008170, 0x18486200}, - {0x00008174, 0x33332210}, - {0x00008178, 0x00000000}, - {0x0000817c, 0x00020000}, {0x000081c0, 0x00000000}, {0x000081c4, 0x33332210}, {0x000081c8, 0x00000000}, {0x000081cc, 0x00000000}, - {0x000081d4, 0x00000000}, {0x000081ec, 0x00000000}, {0x000081f0, 0x00000000}, {0x000081f4, 0x00000000}, -- cgit v1.2.3-70-g09d2 From 2d3fca180710c6832de22c44155ce6a3a4953c6b Mon Sep 17 00:00:00 2001 From: Senthil Balasubramanian Date: Tue, 19 Oct 2010 20:01:41 +0530 Subject: ath9k_hw: Fix divide by zero cases in paprd. We are not handling all divide by zero cases in paprd. Add additional checks for divide by zero cases in papard. This patch has fixes intended for kernel 2.6.36. Cc: stable@kernel.org Signed-off-by: Senthil Balasubramanian Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_paprd.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c index 7c38229ba67..716db414c25 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c @@ -347,6 +347,10 @@ static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain) (((Y[6] - Y[3]) * 1 << scale_factor) + (x_est[6] - x_est[3])) / (x_est[6] - x_est[3]); + /* prevent division by zero */ + if (G_fxp == 0) + return false; + Y_intercept = (G_fxp * (x_est[0] - x_est[3]) + (1 << scale_factor)) / (1 << scale_factor) + Y[3]; @@ -356,14 +360,12 @@ static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain) for (i = 0; i <= 3; i++) { y_est[i] = i * 32; - - /* prevent division by zero */ - if (G_fxp == 0) - return false; - x_est[i] = ((y_est[i] * 1 << scale_factor) + G_fxp) / G_fxp; } + if (y_est[max_index] == 0) + return false; + x_est_fxp1_nonlin = x_est[max_index] - ((1 << scale_factor) * y_est[max_index] + G_fxp) / G_fxp; @@ -457,6 +459,8 @@ static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain) Q_scale_B = find_proper_scale(find_expn(abs(scale_B)), 10); scale_B = scale_B / (1 << Q_scale_B); + if (scale_B == 0) + return false; Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10); Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10); beta_raw = beta_raw / (1 << Q_beta); -- cgit v1.2.3-70-g09d2 From 0845735e2d1e4c177076d4bc2d841d9f77e95131 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 20 Oct 2010 15:59:28 +0200 Subject: ath9k: fix crash in ath_update_survey_stats If ah->curchan is uninitialized, the channel index is bogus, which leads to invalid memory access when the cycle counters are updated. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 3ff0e476c2b..9679b319197 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -182,6 +182,9 @@ static void ath_update_survey_stats(struct ath_softc *sc) struct ath_cycle_counters *cc = &common->cc_survey; unsigned int div = common->clockrate * 1000; + if (!ah->curchan) + return; + if (ah->power_mode == ATH9K_PM_AWAKE) ath_hw_cycle_counters_update(common); -- cgit v1.2.3-70-g09d2 From 0299a50abb5ee8d605c93b61b70e51a717c9960b Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 21 Oct 2010 02:47:24 +0200 Subject: ath9k: fix handling of rate control probe frames The ath9k aggregation code was already checking the rate control probe flag to prevent starting an aggregate frame with a sampling rate. What was missing was closing an aggregate before adding a probing frame to it. Without that, rate control cannot have precise control over probing, which delays using faster rates when the channel conditions improve. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/xmit.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index d077186da87..089b05ed677 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -673,6 +673,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, u16 aggr_limit = 0, al = 0, bpad = 0, al_delta, h_baw = tid->baw_size / 2; enum ATH_AGGR_STATUS status = ATH_AGGR_DONE; + struct ieee80211_tx_info *tx_info; bf_first = list_first_entry(&tid->buf_q, struct ath_buf, list); @@ -699,6 +700,11 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, break; } + tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); + if (nframes && ((tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) || + !(tx_info->control.rates[0].flags & IEEE80211_TX_RC_MCS))) + break; + /* do not exceed subframe limit */ if (nframes >= min((int)h_baw, ATH_AMPDU_SUBFRAME_DEFAULT)) { status = ATH_AGGR_LIMITED; -- cgit v1.2.3-70-g09d2 From 04348f2732a067c75da22413f9d341e29b46c7ae Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Fri, 22 Oct 2010 02:23:08 +0300 Subject: wl1251: fix module names The wl1251 move accidently renamed wl1251_sdio and wl1251_spi modules to just sdio and spi. Restore proper module names. Signed-off-by: Grazvydas Ignotas Acked-by: Kalle Valo Signed-off-by: John W. Linville --- drivers/net/wireless/wl1251/Makefile | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/wl1251/Makefile b/drivers/net/wireless/wl1251/Makefile index 4fe246824db..58b4f935a3f 100644 --- a/drivers/net/wireless/wl1251/Makefile +++ b/drivers/net/wireless/wl1251/Makefile @@ -1,6 +1,8 @@ wl1251-objs = main.o event.o tx.o rx.o ps.o cmd.o \ acx.o boot.o init.o debugfs.o io.o +wl1251_spi-objs += spi.o +wl1251_sdio-objs += sdio.o -obj-$(CONFIG_WL1251) += wl1251.o -obj-$(CONFIG_WL1251_SPI) += spi.o -obj-$(CONFIG_WL1251_SDIO) += sdio.o +obj-$(CONFIG_WL1251) += wl1251.o +obj-$(CONFIG_WL1251_SPI) += wl1251_spi.o +obj-$(CONFIG_WL1251_SDIO) += wl1251_sdio.o -- cgit v1.2.3-70-g09d2 From 30115c2252fcf9d21aae029ff0e27f4cc962ef44 Mon Sep 17 00:00:00 2001 From: Rafał Miłecki Date: Fri, 22 Oct 2010 17:43:45 +0200 Subject: b43: N-PHY: fix infinite-loop-typo MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_n.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index dfec5496055..e0f2d122e12 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -2964,7 +2964,7 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev, (2 - i)); } - for (j = 0; i < 4; j++) { + for (j = 0; j < 4; j++) { if (j < 3) { cur_lna = lna[j]; cur_hpf1 = hpf1[j]; -- cgit v1.2.3-70-g09d2 From c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Sat, 23 Oct 2010 10:59:57 +0530 Subject: mac80211: Fix ibss station got expired immediately Station addition in ieee80211_ibss_rx_queued_mgmt is not updating sta->last_rx which is causing station expiry in ieee80211_ibss_work path. So sta addition and deletion happens repeatedly. CC: stable@kernel.org Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- net/mac80211/ibss.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index ff60c022f51..239c4836a94 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -456,6 +456,7 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, if (!sta) return NULL; + sta->last_rx = jiffies; set_sta_flags(sta, WLAN_STA_AUTHORIZED); /* make sure mandatory rates are always added */ -- cgit v1.2.3-70-g09d2 From dafeac387d7f10d12d4fa9cc626af43c805540f7 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 23 Oct 2010 15:02:02 +0200 Subject: carl9170: fix scheduling while atomic This patch fixes the following mishap: BUG: scheduling while atomic: wpa_supplicant/4164/0x00000002 Modules linked in: carl9170 mac80211 [...] Pid: 4164, comm: wpa_supplicant Not tainted 2.6.36-wl+ #119 Call Trace: [] ? schedule+0x349/0x4c0 [] ? schedule_timeout+0x106/0x1e0 [] ? process_timeout+0x0/0x10 [] ? wait_for_common+0x9d/0x140 [] ? default_wake_function+0x0/0x10 [] ? carl9170_exec_cmd+0xf0/0x250 [carl9170] [] ? carl9170_set_mac_reg+0x5e/0x70 [carl9170] [] ? carl9170_op_add_interface+0x176/0x310 [carl9170] [...] rcu_read_unlock() call was erroneously placed after the sync. function carl9170_mod_virtual_mac. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/ath/carl9170/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c index 3cc99f3f7ab..980ae70ea42 100644 --- a/drivers/net/wireless/ath/carl9170/main.c +++ b/drivers/net/wireless/ath/carl9170/main.c @@ -639,8 +639,8 @@ init: if (err) goto unlock; } else { - err = carl9170_mod_virtual_mac(ar, vif_id, vif->addr); rcu_read_unlock(); + err = carl9170_mod_virtual_mac(ar, vif_id, vif->addr); if (err) goto unlock; -- cgit v1.2.3-70-g09d2 From fac6b6a065da42f826088c58bddad82e1b1ccb40 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 23 Oct 2010 17:45:38 +0200 Subject: ath9k: resume aggregation immediately after a hardware reset Since aggregation is usually triggered by tx completion, a hardware reset (because of beacon stuck, tx hang or baseband hang) can significantly delay the transmission of the next AMPDU (until the next tx completion event). Fix this by rescheduling aggregation after such a reset. Signed-off-by: Felix Fietkau Cc: stable@kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/beacon.c | 2 +- drivers/net/wireless/ath/ath9k/main.c | 4 ++-- drivers/net/wireless/ath/ath9k/xmit.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c index 4ed010d4ef9..19891e7d49a 100644 --- a/drivers/net/wireless/ath/ath9k/beacon.c +++ b/drivers/net/wireless/ath/ath9k/beacon.c @@ -370,7 +370,7 @@ void ath_beacon_tasklet(unsigned long data) ath_print(common, ATH_DBG_BSTUCK, "beacon is officially stuck\n"); sc->sc_flags |= SC_OP_TSF_RESET; - ath_reset(sc, false); + ath_reset(sc, true); } return; diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 9679b319197..c6ec800d7a6 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -580,7 +580,7 @@ void ath_hw_check(struct work_struct *work) msleep(1); } - ath_reset(sc, false); + ath_reset(sc, true); out: ath9k_ps_restore(sc); @@ -598,7 +598,7 @@ void ath9k_tasklet(unsigned long data) ath9k_ps_wakeup(sc); if (status & ATH9K_INT_FATAL) { - ath_reset(sc, false); + ath_reset(sc, true); ath9k_ps_restore(sc); return; } diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 089b05ed677..30ef2dfc1ed 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -2163,7 +2163,7 @@ static void ath_tx_complete_poll_work(struct work_struct *work) ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET, "tx hung, resetting the chip\n"); ath9k_ps_wakeup(sc); - ath_reset(sc, false); + ath_reset(sc, true); ath9k_ps_restore(sc); } -- cgit v1.2.3-70-g09d2 From 822395b591db32ad3cf8a5b57b0fe30fb8d12c37 Mon Sep 17 00:00:00 2001 From: Don Fry Date: Sat, 23 Oct 2010 09:02:50 -0700 Subject: iwlwifi: quiet a noisy printk Timing issues in microcode for some devices can cause a compressed BA to be sent to the driver prior to returning any a-MPDU notification. Traces show RTS-CTS is exchanged and then the timer fires which causes an empty BA to be sent which acknowledges nothing. This results in a noisy printk. Only print the message if the bitmap is non-zero. Signed-off-by: Don Fry Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn-tx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c index db57aea629d..2b078a99572 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c @@ -1227,7 +1227,8 @@ static int iwlagn_tx_status_reply_compressed_ba(struct iwl_priv *priv, struct ieee80211_tx_info *info; if (unlikely(!agg->wait_for_ba)) { - IWL_ERR(priv, "Received BA when not expected\n"); + if (unlikely(ba_resp->bitmap)) + IWL_ERR(priv, "Received BA when not expected\n"); return -EINVAL; } -- cgit v1.2.3-70-g09d2 From 18edc84cf15cbe114dcdf7e8612ee52586d0aad7 Mon Sep 17 00:00:00 2001 From: Divy Le Ray Date: Mon, 25 Oct 2010 07:35:02 +0000 Subject: cxgb3: fix device opening error path Only negative return from bind_qsets() should be considered an error and propagated. It fixes an issue reported by IBM on P Series platform. Signed-off-by: Divy Le Ray Tested-by: Nishanth Aravamudan Signed-off-by: David S. Miller --- drivers/net/cxgb3/cxgb3_main.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index a04ce6a5f63..4e3c12371aa 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -1266,11 +1266,13 @@ static int cxgb_up(struct adapter *adap) } if (!(adap->flags & QUEUES_BOUND)) { - err = bind_qsets(adap); - if (err) { - CH_ERR(adap, "failed to bind qsets, err %d\n", err); + int ret = bind_qsets(adap); + + if (ret < 0) { + CH_ERR(adap, "failed to bind qsets, err %d\n", ret); t3_intr_disable(adap); free_irq_resources(adap); + err = ret; goto out; } adap->flags |= QUEUES_BOUND; -- cgit v1.2.3-70-g09d2 From 63a76944b674bb758232e4213da0da95ae055012 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Mon, 25 Oct 2010 01:11:10 +0000 Subject: be2net: Call netif_carier_off() after register_netdev() Calling netif_carrier_off before register_netdev was causing the network interface to miss a linkwatch pending event leading to an inconsistent state if the link is not up when interface is initialized.This is now invoked after register_netdev. Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller --- drivers/net/benet/be_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 12486260c92..87673558cde 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -2556,7 +2556,6 @@ static void be_netdev_init(struct net_device *netdev) netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc, BE_NAPI_WEIGHT); - netif_carrier_off(netdev); netif_stop_queue(netdev); } @@ -2865,6 +2864,7 @@ static int __devinit be_probe(struct pci_dev *pdev, status = register_netdev(netdev); if (status != 0) goto unsetup; + netif_carrier_off(netdev); dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num); return 0; -- cgit v1.2.3-70-g09d2 From c6ce2f4b270cb1d4d6b6f4f692a12ca2fea13f3f Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Mon, 25 Oct 2010 01:11:58 +0000 Subject: be2net: Fix CSO for UDP packets We're setting skb->ip_summed to CHECKSUM_NONE for all non-TCP pkts, making the stack recompute checksum.This is a bug for UDP pkts for which cso must be used. Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller --- drivers/net/benet/be_main.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 87673558cde..6b80a06eb3a 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -849,20 +849,16 @@ static void be_rx_stats_update(struct be_rx_obj *rxo, stats->rx_mcast_pkts++; } -static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso) +static inline bool csum_passed(struct be_eth_rx_compl *rxcp) { - u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk; + u8 l4_cksm, ipv6, ipcksm; l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp); ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp); - ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp); - if (ip_version) { - tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp); - udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp); - } - ipv6_chk = (ip_version && (tcpf || udpf)); + ipv6 = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp); - return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true; + /* Ignore ipcksm for ipv6 pkts */ + return l4_cksm && (ipcksm || ipv6); } static struct be_rx_page_info * @@ -1017,10 +1013,10 @@ static void be_rx_compl_process(struct be_adapter *adapter, skb_fill_rx_data(adapter, rxo, skb, rxcp, num_rcvd); - if (do_pkt_csum(rxcp, adapter->rx_csum)) - skb_checksum_none_assert(skb); - else + if (likely(adapter->rx_csum && csum_passed(rxcp))) skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb_checksum_none_assert(skb); skb->truesize = skb->len + sizeof(struct sk_buff); skb->protocol = eth_type_trans(skb, adapter->netdev); -- cgit v1.2.3-70-g09d2 From b336369c1e1ad88495895260a9068eb18bc48b6c Mon Sep 17 00:00:00 2001 From: Joshua Hoke Date: Mon, 25 Oct 2010 01:44:22 +0000 Subject: macb: Don't re-enable interrupts while in polling mode On a busy network, the macb driver could get stuck in the interrupt handler, quickly triggering the watchdog, due to a confluence of factors: 1. macb_poll re-enables interrupts unconditionally, even when it will be called again because it exhausted its rx budget 2. macb_interrupt only disables interrupts after scheduling macb_poll, but scheduling fails when macb_poll is already scheduled because it didn't call napi_complete 3. macb_interrupt loops until the interrupt status register is clear, which will never happen in this case if the driver doesn't disable the RX interrupt Since macb_interrupt runs in interrupt context, this effectively locks up the machine, triggering the hardware watchdog. This issue was readily reproducible on a flooded network with a modified 2.6.27.48 kernel. The same problem appears to still be in the 2.6.36-rc8 driver code, so I am submitting this patch against that version. I have not tested this version of the patch except to make sure the kernel compiles. Signed-off-by: Joshua Hoke Signed-off-by: David S. Miller --- drivers/net/macb.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 4297f6e8c4b..f69e73e2191 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -515,14 +515,15 @@ static int macb_poll(struct napi_struct *napi, int budget) (unsigned long)status, budget); work_done = macb_rx(bp, budget); - if (work_done < budget) + if (work_done < budget) { napi_complete(napi); - /* - * We've done what we can to clean the buffers. Make sure we - * get notified when new packets arrive. - */ - macb_writel(bp, IER, MACB_RX_INT_FLAGS); + /* + * We've done what we can to clean the buffers. Make sure we + * get notified when new packets arrive. + */ + macb_writel(bp, IER, MACB_RX_INT_FLAGS); + } /* TODO: Handle errors */ @@ -550,12 +551,16 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) } if (status & MACB_RX_INT_FLAGS) { + /* + * There's no point taking any more interrupts + * until we have processed the buffers. The + * scheduling call may fail if the poll routine + * is already scheduled, so disable interrupts + * now. + */ + macb_writel(bp, IDR, MACB_RX_INT_FLAGS); + if (napi_schedule_prep(&bp->napi)) { - /* - * There's no point taking any more interrupts - * until we have processed the buffers - */ - macb_writel(bp, IDR, MACB_RX_INT_FLAGS); dev_dbg(&bp->pdev->dev, "scheduling RX softirq\n"); __napi_schedule(&bp->napi); -- cgit v1.2.3-70-g09d2 From 0926f91083f34d047abc74f1ca4fa6a9c161f7db Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Mon, 25 Oct 2010 02:56:47 +0000 Subject: mlx4_en: Fix out of bounds array access When searching for a free entry in either mlx4_register_vlan() or mlx4_register_mac(), and there is no free entry, the loop terminates without updating the local variable free thus causing out of array bounds access. Fix this by adding a proper check outside the loop. Signed-off-by: Eli Cohen Signed-off-by: David S. Miller --- drivers/net/mlx4/port.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c index 606aa58afde..8674ad5764c 100644 --- a/drivers/net/mlx4/port.c +++ b/drivers/net/mlx4/port.c @@ -111,6 +111,12 @@ int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index) goto out; } } + + if (free < 0) { + err = -ENOMEM; + goto out; + } + mlx4_dbg(dev, "Free MAC index is %d\n", free); if (table->total == table->max) { @@ -205,6 +211,11 @@ int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index) } } + if (free < 0) { + err = -ENOMEM; + goto out; + } + if (table->total == table->max) { /* No free vlan entries */ err = -ENOSPC; -- cgit v1.2.3-70-g09d2 From 11a766ce915fc9f8663714eac6d59239388534ea Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 25 Oct 2010 12:51:55 -0700 Subject: net: Increase xmit RECURSION_LIMIT to 10. Three is definitely too low, and we know from reports that GRE tunnels stacked as deeply as 37 levels cause stack overflows, so pick some reasonable value between those two. Signed-off-by: David S. Miller --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index 78b5a89b0f4..2c7da3ab468 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2213,7 +2213,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q, } static DEFINE_PER_CPU(int, xmit_recursion); -#define RECURSION_LIMIT 3 +#define RECURSION_LIMIT 10 /** * dev_queue_xmit - transmit a buffer -- cgit v1.2.3-70-g09d2 From 5202e173d7bc5ff832a4f36e66f26e00feb343c6 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 25 Oct 2010 13:04:48 -0700 Subject: tms380tr: Use mdelay() in tms380tr_wait(). This driver tries to do up to half-second udelay() calls, which overflows on x86-64. Reported-by: Andi Kleen Signed-off-by: David S. Miller --- drivers/net/tokenring/tms380tr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/tokenring/tms380tr.c b/drivers/net/tokenring/tms380tr.c index 663b8860a53..793020347e5 100644 --- a/drivers/net/tokenring/tms380tr.c +++ b/drivers/net/tokenring/tms380tr.c @@ -1220,7 +1220,7 @@ void tms380tr_wait(unsigned long time) tmp = schedule_timeout_interruptible(tmp); } while(time_after(tmp, jiffies)); #else - udelay(time); + mdelay(time / 1000); #endif } -- cgit v1.2.3-70-g09d2 From b616b09afabf6d569aa31176aa86f05d2586de3e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 24 Oct 2010 21:31:58 +0000 Subject: vlan: rcu annotations (struct net_device)->vlgrp is rcu protected : add __rcu annotation and proper rcu primitives. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- net/8021q/vlan.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index fcd3dda8632..ceefb441c23 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -944,7 +944,7 @@ struct net_device { /* Protocol specific pointers */ #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) - struct vlan_group *vlgrp; /* VLAN group */ + struct vlan_group __rcu *vlgrp; /* VLAN group */ #endif #ifdef CONFIG_NET_DSA void *dsa_ptr; /* dsa specific data */ diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 05b867e4375..52077ca2207 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -112,7 +112,7 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) ASSERT_RTNL(); - grp = real_dev->vlgrp; + grp = rtnl_dereference(real_dev->vlgrp); BUG_ON(!grp); /* Take it out of our own structures, but be sure to interlock with @@ -177,7 +177,7 @@ int register_vlan_dev(struct net_device *dev) struct vlan_group *grp, *ngrp = NULL; int err; - grp = real_dev->vlgrp; + grp = rtnl_dereference(real_dev->vlgrp); if (!grp) { ngrp = grp = vlan_group_alloc(real_dev); if (!grp) @@ -385,7 +385,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, dev->netdev_ops->ndo_vlan_rx_add_vid(dev, 0); } - grp = dev->vlgrp; + grp = rtnl_dereference(dev->vlgrp); if (!grp) goto out; -- cgit v1.2.3-70-g09d2 From 198caeca3eb4c81bbdbeb34a870868002f89b3d2 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 24 Oct 2010 21:32:05 +0000 Subject: ipv6: ip6_ptr rcu annotations (struct net_device)->ip6_ptr is rcu protected : add __rcu annotation and proper rcu primitives. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- net/core/dev.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ceefb441c23..4722d4a9b58 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -952,7 +952,7 @@ struct net_device { void *atalk_ptr; /* AppleTalk link */ struct in_device __rcu *ip_ptr; /* IPv4 specific data */ void *dn_ptr; /* DECnet specific data */ - void *ip6_ptr; /* IPv6 specific data */ + struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */ void *ec_ptr; /* Econet specific data */ void *ax25_ptr; /* AX.25 specific data */ struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, diff --git a/net/core/dev.c b/net/core/dev.c index 2c7da3ab468..365f7f5077e 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5416,7 +5416,7 @@ void netdev_run_todo(void) /* paranoia */ BUG_ON(netdev_refcnt_read(dev)); WARN_ON(rcu_dereference_raw(dev->ip_ptr)); - WARN_ON(dev->ip6_ptr); + WARN_ON(rcu_dereference_raw(dev->ip6_ptr)); WARN_ON(dev->dn_ptr); if (dev->destructor) -- cgit v1.2.3-70-g09d2 From 3cc77ec74e1583b50b8405114cdbd6b8ebb8c474 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 24 Oct 2010 21:32:36 +0000 Subject: net/802: add __rcu annotations (struct net_device)->garp_port is rcu protected : (struct garp_port)->applicants is rcu protected : add __rcu annotation and proper rcu primitives. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- include/net/garp.h | 2 +- net/802/garp.c | 18 +++++++++--------- net/802/stp.c | 4 ++-- 4 files changed, 13 insertions(+), 13 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4722d4a9b58..b72d5a46090 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1072,7 +1072,7 @@ struct net_device { struct pcpu_dstats __percpu *dstats; /* dummy stats */ }; /* GARP */ - struct garp_port *garp_port; + struct garp_port __rcu *garp_port; /* class/net/name entry */ struct device dev; diff --git a/include/net/garp.h b/include/net/garp.h index 825f172caba..f4c295984c4 100644 --- a/include/net/garp.h +++ b/include/net/garp.h @@ -107,7 +107,7 @@ struct garp_applicant { }; struct garp_port { - struct garp_applicant *applicants[GARP_APPLICATION_MAX + 1]; + struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1]; }; extern int garp_register_application(struct garp_application *app); diff --git a/net/802/garp.c b/net/802/garp.c index 941f2a324d3..c1df2dad8c6 100644 --- a/net/802/garp.c +++ b/net/802/garp.c @@ -346,8 +346,8 @@ int garp_request_join(const struct net_device *dev, const struct garp_application *appl, const void *data, u8 len, u8 type) { - struct garp_port *port = dev->garp_port; - struct garp_applicant *app = port->applicants[appl->type]; + struct garp_port *port = rtnl_dereference(dev->garp_port); + struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]); struct garp_attr *attr; spin_lock_bh(&app->lock); @@ -366,8 +366,8 @@ void garp_request_leave(const struct net_device *dev, const struct garp_application *appl, const void *data, u8 len, u8 type) { - struct garp_port *port = dev->garp_port; - struct garp_applicant *app = port->applicants[appl->type]; + struct garp_port *port = rtnl_dereference(dev->garp_port); + struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]); struct garp_attr *attr; spin_lock_bh(&app->lock); @@ -546,11 +546,11 @@ static int garp_init_port(struct net_device *dev) static void garp_release_port(struct net_device *dev) { - struct garp_port *port = dev->garp_port; + struct garp_port *port = rtnl_dereference(dev->garp_port); unsigned int i; for (i = 0; i <= GARP_APPLICATION_MAX; i++) { - if (port->applicants[i]) + if (rtnl_dereference(port->applicants[i])) return; } rcu_assign_pointer(dev->garp_port, NULL); @@ -565,7 +565,7 @@ int garp_init_applicant(struct net_device *dev, struct garp_application *appl) ASSERT_RTNL(); - if (!dev->garp_port) { + if (!rtnl_dereference(dev->garp_port)) { err = garp_init_port(dev); if (err < 0) goto err1; @@ -601,8 +601,8 @@ EXPORT_SYMBOL_GPL(garp_init_applicant); void garp_uninit_applicant(struct net_device *dev, struct garp_application *appl) { - struct garp_port *port = dev->garp_port; - struct garp_applicant *app = port->applicants[appl->type]; + struct garp_port *port = rtnl_dereference(dev->garp_port); + struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]); ASSERT_RTNL(); diff --git a/net/802/stp.c b/net/802/stp.c index 53c8f77f0cc..978c30b1b36 100644 --- a/net/802/stp.c +++ b/net/802/stp.c @@ -21,8 +21,8 @@ #define GARP_ADDR_MAX 0x2F #define GARP_ADDR_RANGE (GARP_ADDR_MAX - GARP_ADDR_MIN) -static const struct stp_proto *garp_protos[GARP_ADDR_RANGE + 1] __read_mostly; -static const struct stp_proto *stp_proto __read_mostly; +static const struct stp_proto __rcu *garp_protos[GARP_ADDR_RANGE + 1] __read_mostly; +static const struct stp_proto __rcu *stp_proto __read_mostly; static struct llc_sap *sap __read_mostly; static unsigned int sap_registered; -- cgit v1.2.3-70-g09d2 From 6f0bcf152582e7403155627a38e07bf3ef7f3cf5 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 24 Oct 2010 21:33:16 +0000 Subject: tunnels: add _rcu annotations (struct ip6_tnl)->next is rcu protected : (struct ip_tunnel)->next is rcu protected : (struct xfrm6_tunnel)->next is rcu protected : add __rcu annotation and proper rcu primitives. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/ip6_tunnel.h | 2 +- include/net/ipip.h | 2 +- include/net/xfrm.h | 2 +- net/ipv4/gre.c | 5 +++-- net/ipv6/tunnel6.c | 24 +++++++++++++++--------- 5 files changed, 21 insertions(+), 14 deletions(-) diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h index fc94ec568a5..fc73e667b50 100644 --- a/include/net/ip6_tunnel.h +++ b/include/net/ip6_tunnel.h @@ -13,7 +13,7 @@ /* IPv6 tunnel */ struct ip6_tnl { - struct ip6_tnl *next; /* next tunnel in list */ + struct ip6_tnl __rcu *next; /* next tunnel in list */ struct net_device *dev; /* virtual device associated with tunnel */ struct ip6_tnl_parm parms; /* tunnel configuration parameters */ struct flowi fl; /* flowi template for xmit */ diff --git a/include/net/ipip.h b/include/net/ipip.h index 58abbf966b0..0403fe4c451 100644 --- a/include/net/ipip.h +++ b/include/net/ipip.h @@ -16,7 +16,7 @@ struct ip_tunnel_6rd_parm { }; struct ip_tunnel { - struct ip_tunnel *next; + struct ip_tunnel __rcu *next; struct net_device *dev; int err_count; /* Number of arrived ICMP errors */ diff --git a/include/net/xfrm.h b/include/net/xfrm.h index f28d7c9b9f8..ffcd47820a5 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1272,7 +1272,7 @@ struct xfrm6_tunnel { int (*handler)(struct sk_buff *skb); int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info); - struct xfrm6_tunnel *next; + struct xfrm6_tunnel __rcu *next; int priority; }; diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c index caea6885fdb..c6933f2ea31 100644 --- a/net/ipv4/gre.c +++ b/net/ipv4/gre.c @@ -22,7 +22,7 @@ #include -static const struct gre_protocol *gre_proto[GREPROTO_MAX] __read_mostly; +static const struct gre_protocol __rcu *gre_proto[GREPROTO_MAX] __read_mostly; static DEFINE_SPINLOCK(gre_proto_lock); int gre_add_protocol(const struct gre_protocol *proto, u8 version) @@ -51,7 +51,8 @@ int gre_del_protocol(const struct gre_protocol *proto, u8 version) goto err_out; spin_lock(&gre_proto_lock); - if (gre_proto[version] != proto) + if (rcu_dereference_protected(gre_proto[version], + lockdep_is_held(&gre_proto_lock)) != proto) goto err_out_unlock; rcu_assign_pointer(gre_proto[version], NULL); spin_unlock(&gre_proto_lock); diff --git a/net/ipv6/tunnel6.c b/net/ipv6/tunnel6.c index d9864725d0c..4f3cec12aa8 100644 --- a/net/ipv6/tunnel6.c +++ b/net/ipv6/tunnel6.c @@ -30,23 +30,26 @@ #include #include -static struct xfrm6_tunnel *tunnel6_handlers __read_mostly; -static struct xfrm6_tunnel *tunnel46_handlers __read_mostly; +static struct xfrm6_tunnel __rcu *tunnel6_handlers __read_mostly; +static struct xfrm6_tunnel __rcu *tunnel46_handlers __read_mostly; static DEFINE_MUTEX(tunnel6_mutex); int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family) { - struct xfrm6_tunnel **pprev; + struct xfrm6_tunnel __rcu **pprev; + struct xfrm6_tunnel *t; int ret = -EEXIST; int priority = handler->priority; mutex_lock(&tunnel6_mutex); for (pprev = (family == AF_INET6) ? &tunnel6_handlers : &tunnel46_handlers; - *pprev; pprev = &(*pprev)->next) { - if ((*pprev)->priority > priority) + (t = rcu_dereference_protected(*pprev, + lockdep_is_held(&tunnel6_mutex))) != NULL; + pprev = &t->next) { + if (t->priority > priority) break; - if ((*pprev)->priority == priority) + if (t->priority == priority) goto err; } @@ -65,14 +68,17 @@ EXPORT_SYMBOL(xfrm6_tunnel_register); int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family) { - struct xfrm6_tunnel **pprev; + struct xfrm6_tunnel __rcu **pprev; + struct xfrm6_tunnel *t; int ret = -ENOENT; mutex_lock(&tunnel6_mutex); for (pprev = (family == AF_INET6) ? &tunnel6_handlers : &tunnel46_handlers; - *pprev; pprev = &(*pprev)->next) { - if (*pprev == handler) { + (t = rcu_dereference_protected(*pprev, + lockdep_is_held(&tunnel6_mutex))) != NULL; + pprev = &t->next) { + if (t == handler) { *pprev = handler->next; ret = 0; break; -- cgit v1.2.3-70-g09d2 From f6318e558806c925029dc101f14874be9f9fa78f Mon Sep 17 00:00:00 2001 From: KOVACS Krisztian Date: Sun, 24 Oct 2010 23:38:32 +0000 Subject: netfilter: fix module dependency issues with IPv6 defragmentation, ip6tables and xt_TPROXY One of the previous tproxy related patches split IPv6 defragmentation and connection tracking, but did not correctly add Kconfig stanzas to handle the new dependencies correctly. This patch fixes that by making the config options mirror the setup we have for IPv4: a distinct config option for defragmentation that is automatically selected by both connection tracking and xt_TPROXY/xt_socket. The patch also changes the #ifdefs enclosing IPv6 specific code in xt_socket and xt_TPROXY: we only compile these in case we have ip6tables support enabled. Signed-off-by: KOVACS Krisztian Signed-off-by: David S. Miller --- net/ipv6/netfilter/Kconfig | 5 +++++ net/ipv6/netfilter/Makefile | 5 ++++- net/netfilter/Kconfig | 2 ++ net/netfilter/xt_TPROXY.c | 10 ++++++---- net/netfilter/xt_socket.c | 12 ++++++++---- 5 files changed, 25 insertions(+), 9 deletions(-) diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig index 44d2eeac089..448464844a2 100644 --- a/net/ipv6/netfilter/Kconfig +++ b/net/ipv6/netfilter/Kconfig @@ -5,10 +5,15 @@ menu "IPv6: Netfilter Configuration" depends on INET && IPV6 && NETFILTER +config NF_DEFRAG_IPV6 + tristate + default n + config NF_CONNTRACK_IPV6 tristate "IPv6 connection tracking support" depends on INET && IPV6 && NF_CONNTRACK default m if NETFILTER_ADVANCED=n + select NF_DEFRAG_IPV6 ---help--- Connection tracking keeps a record of what packets have passed through your machine, in order to figure out how they are related diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile index 3f8e4a3d83c..0a432c9b079 100644 --- a/net/ipv6/netfilter/Makefile +++ b/net/ipv6/netfilter/Makefile @@ -12,11 +12,14 @@ obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o # objects for l3 independent conntrack nf_conntrack_ipv6-objs := nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o -nf_defrag_ipv6-objs := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o # l3 independent conntrack obj-$(CONFIG_NF_CONNTRACK_IPV6) += nf_conntrack_ipv6.o nf_defrag_ipv6.o +# defrag +nf_defrag_ipv6-objs := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o +obj-$(CONFIG_NF_DEFRAG_IPV6) += nf_defrag_ipv6.o + # matches obj-$(CONFIG_IP6_NF_MATCH_AH) += ip6t_ah.o obj-$(CONFIG_IP6_NF_MATCH_EUI64) += ip6t_eui64.o diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index 43288259f4a..1534f2b44ca 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -525,6 +525,7 @@ config NETFILTER_XT_TARGET_TPROXY depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED select NF_DEFRAG_IPV4 + select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES help This option adds a `TPROXY' target, which is somewhat similar to REDIRECT. It can only be used in the mangle table and is useful @@ -927,6 +928,7 @@ config NETFILTER_XT_MATCH_SOCKET depends on NETFILTER_ADVANCED depends on !NF_CONNTRACK || NF_CONNTRACK select NF_DEFRAG_IPV4 + select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES help This option adds a `socket' match, which can be used to match packets for which a TCP or UDP socket lookup finds a valid socket. diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c index 19c482caf30..640678f47a2 100644 --- a/net/netfilter/xt_TPROXY.c +++ b/net/netfilter/xt_TPROXY.c @@ -21,7 +21,9 @@ #include #include -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + +#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) +#define XT_TPROXY_HAVE_IPV6 1 #include #include #include @@ -172,7 +174,7 @@ tproxy_tg4_v1(struct sk_buff *skb, const struct xt_action_param *par) return tproxy_tg4(skb, tgi->laddr.ip, tgi->lport, tgi->mark_mask, tgi->mark_value); } -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#ifdef XT_TPROXY_HAVE_IPV6 static inline const struct in6_addr * tproxy_laddr6(struct sk_buff *skb, const struct in6_addr *user_laddr, @@ -372,7 +374,7 @@ static struct xt_target tproxy_tg_reg[] __read_mostly = { .hooks = 1 << NF_INET_PRE_ROUTING, .me = THIS_MODULE, }, -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#ifdef XT_TPROXY_HAVE_IPV6 { .name = "TPROXY", .family = NFPROTO_IPV6, @@ -391,7 +393,7 @@ static struct xt_target tproxy_tg_reg[] __read_mostly = { static int __init tproxy_tg_init(void) { nf_defrag_ipv4_enable(); -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#ifdef XT_TPROXY_HAVE_IPV6 nf_defrag_ipv6_enable(); #endif diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c index 2dbd4c85773..d94a858dc52 100644 --- a/net/netfilter/xt_socket.c +++ b/net/netfilter/xt_socket.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -22,7 +21,12 @@ #include #include #include + +#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) +#define XT_SOCKET_HAVE_IPV6 1 +#include #include +#endif #include @@ -186,7 +190,7 @@ socket_mt4_v1(const struct sk_buff *skb, struct xt_action_param *par) return socket_match(skb, par, par->matchinfo); } -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#ifdef XT_SOCKET_HAVE_IPV6 static int extract_icmp6_fields(const struct sk_buff *skb, @@ -331,7 +335,7 @@ static struct xt_match socket_mt_reg[] __read_mostly = { (1 << NF_INET_LOCAL_IN), .me = THIS_MODULE, }, -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#ifdef XT_SOCKET_HAVE_IPV6 { .name = "socket", .revision = 1, @@ -348,7 +352,7 @@ static struct xt_match socket_mt_reg[] __read_mostly = { static int __init socket_mt_init(void) { nf_defrag_ipv4_enable(); -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#ifdef XT_SOCKET_HAVE_IPV6 nf_defrag_ipv6_enable(); #endif -- cgit v1.2.3-70-g09d2 From 6e3f7faf3e8a3e226b1a6b955aac12abf2f2e1b6 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 03:02:02 +0000 Subject: rps: add __rcu annotations Add __rcu annotations to : (struct netdev_rx_queue)->rps_map (struct netdev_rx_queue)->rps_flow_table struct rps_sock_flow_table *rps_sock_flow_table; And use appropriate rcu primitives. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 12 ++++++------ net/core/dev.c | 12 ++++++------ net/core/net-sysfs.c | 20 +++++++++++++------- net/core/sysctl_net_core.c | 3 ++- 4 files changed, 27 insertions(+), 20 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index b72d5a46090..072652d94d9 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -585,15 +585,15 @@ static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table, table->ents[hash & table->mask] = RPS_NO_CPU; } -extern struct rps_sock_flow_table *rps_sock_flow_table; +extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; /* This structure contains an instance of an RX queue. */ struct netdev_rx_queue { - struct rps_map *rps_map; - struct rps_dev_flow_table *rps_flow_table; - struct kobject kobj; - struct netdev_rx_queue *first; - atomic_t count; + struct rps_map __rcu *rps_map; + struct rps_dev_flow_table __rcu *rps_flow_table; + struct kobject kobj; + struct netdev_rx_queue *first; + atomic_t count; } ____cacheline_aligned_in_smp; #endif /* CONFIG_RPS */ diff --git a/net/core/dev.c b/net/core/dev.c index 365f7f5077e..e8a8dc19365 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2413,7 +2413,7 @@ EXPORT_SYMBOL(__skb_get_rxhash); #ifdef CONFIG_RPS /* One global table that all flow-based protocols share. */ -struct rps_sock_flow_table *rps_sock_flow_table __read_mostly; +struct rps_sock_flow_table __rcu *rps_sock_flow_table __read_mostly; EXPORT_SYMBOL(rps_sock_flow_table); /* @@ -2425,7 +2425,7 @@ static int get_rps_cpu(struct net_device *dev, struct sk_buff *skb, struct rps_dev_flow **rflowp) { struct netdev_rx_queue *rxqueue; - struct rps_map *map = NULL; + struct rps_map *map; struct rps_dev_flow_table *flow_table; struct rps_sock_flow_table *sock_flow_table; int cpu = -1; @@ -2444,15 +2444,15 @@ static int get_rps_cpu(struct net_device *dev, struct sk_buff *skb, } else rxqueue = dev->_rx; - if (rxqueue->rps_map) { - map = rcu_dereference(rxqueue->rps_map); - if (map && map->len == 1) { + map = rcu_dereference(rxqueue->rps_map); + if (map) { + if (map->len == 1) { tcpu = map->cpus[0]; if (cpu_online(tcpu)) cpu = tcpu; goto done; } - } else if (!rxqueue->rps_flow_table) { + } else if (!rcu_dereference_raw(rxqueue->rps_flow_table)) { goto done; } diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index b143173e3eb..a5ff5a89f37 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -598,7 +598,8 @@ static ssize_t store_rps_map(struct netdev_rx_queue *queue, } spin_lock(&rps_map_lock); - old_map = queue->rps_map; + old_map = rcu_dereference_protected(queue->rps_map, + lockdep_is_held(&rps_map_lock)); rcu_assign_pointer(queue->rps_map, map); spin_unlock(&rps_map_lock); @@ -677,7 +678,8 @@ static ssize_t store_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, table = NULL; spin_lock(&rps_dev_flow_lock); - old_table = queue->rps_flow_table; + old_table = rcu_dereference_protected(queue->rps_flow_table, + lockdep_is_held(&rps_dev_flow_lock)); rcu_assign_pointer(queue->rps_flow_table, table); spin_unlock(&rps_dev_flow_lock); @@ -705,13 +707,17 @@ static void rx_queue_release(struct kobject *kobj) { struct netdev_rx_queue *queue = to_rx_queue(kobj); struct netdev_rx_queue *first = queue->first; + struct rps_map *map; + struct rps_dev_flow_table *flow_table; - if (queue->rps_map) - call_rcu(&queue->rps_map->rcu, rps_map_release); - if (queue->rps_flow_table) - call_rcu(&queue->rps_flow_table->rcu, - rps_dev_flow_table_release); + map = rcu_dereference_raw(queue->rps_map); + if (map) + call_rcu(&map->rcu, rps_map_release); + + flow_table = rcu_dereference_raw(queue->rps_flow_table); + if (flow_table) + call_rcu(&flow_table->rcu, rps_dev_flow_table_release); if (atomic_dec_and_test(&first->count)) kfree(first); diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index 01eee5d984b..385b6095fdc 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -34,7 +34,8 @@ static int rps_sock_flow_sysctl(ctl_table *table, int write, mutex_lock(&sock_flow_mutex); - orig_sock_table = rps_sock_flow_table; + orig_sock_table = rcu_dereference_protected(rps_sock_flow_table, + lockdep_is_held(&sock_flow_mutex)); size = orig_size = orig_sock_table ? orig_sock_table->mask + 1 : 0; ret = proc_dointvec(&tmp, write, buffer, lenp, ppos); -- cgit v1.2.3-70-g09d2 From 1c87733d0682547050ccccb400cdac425fa43b39 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 03:20:11 +0000 Subject: net_ns: add __rcu annotations add __rcu annotation to (struct net)->gen, and use rcu_dereference_protected() in net_assign_generic() Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/net_namespace.h | 2 +- net/core/net_namespace.c | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index 65af9a07cf7..1bf812b21fb 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -88,7 +88,7 @@ struct net { #ifdef CONFIG_WEXT_CORE struct sk_buff_head wext_nlevents; #endif - struct net_generic *gen; + struct net_generic __rcu *gen; /* Note : following structs are cache line aligned */ #ifdef CONFIG_XFRM diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index c988e685433..3f860261c5e 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -42,7 +42,9 @@ static int net_assign_generic(struct net *net, int id, void *data) BUG_ON(!mutex_is_locked(&net_mutex)); BUG_ON(id == 0); - ng = old_ng = net->gen; + old_ng = rcu_dereference_protected(net->gen, + lockdep_is_held(&net_mutex)); + ng = old_ng; if (old_ng->len >= id) goto assign; -- cgit v1.2.3-70-g09d2 From 0d7da9ddd9a4eb7808698d04b98bf9d62d02649b Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 03:47:05 +0000 Subject: net: add __rcu annotation to sk_filter Add __rcu annotation to : (struct sock)->sk_filter And use appropriate rcu primitives to reduce sparse warnings if CONFIG_SPARSE_RCU_POINTER=y Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/sock.h | 2 +- net/core/filter.c | 4 ++-- net/core/sock.c | 2 +- net/ipv4/udp.c | 2 +- net/ipv6/raw.c | 2 +- net/ipv6/udp.c | 2 +- 6 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index 73a4f9702a6..c7a736228ca 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -301,7 +301,7 @@ struct sock { const struct cred *sk_peer_cred; long sk_rcvtimeo; long sk_sndtimeo; - struct sk_filter *sk_filter; + struct sk_filter __rcu *sk_filter; void *sk_protinfo; struct timer_list sk_timer; ktime_t sk_stamp; diff --git a/net/core/filter.c b/net/core/filter.c index 7adf5035291..7beaec36b54 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -89,8 +89,8 @@ int sk_filter(struct sock *sk, struct sk_buff *skb) rcu_read_lock_bh(); filter = rcu_dereference_bh(sk->sk_filter); if (filter) { - unsigned int pkt_len = sk_run_filter(skb, filter->insns, - filter->len); + unsigned int pkt_len = sk_run_filter(skb, filter->insns, filter->len); + err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM; } rcu_read_unlock_bh(); diff --git a/net/core/sock.c b/net/core/sock.c index 11db43632df..3eed5424e65 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1225,7 +1225,7 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority) sock_reset_flag(newsk, SOCK_DONE); skb_queue_head_init(&newsk->sk_error_queue); - filter = newsk->sk_filter; + filter = rcu_dereference_protected(newsk->sk_filter, 1); if (filter != NULL) sk_filter_charge(newsk, filter); diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index b3f7e8cf18a..28cb2d733a3 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1413,7 +1413,7 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) } } - if (sk->sk_filter) { + if (rcu_dereference_raw(sk->sk_filter)) { if (udp_lib_checksum_complete(skb)) goto drop; } diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 45e6efb7f17..86c39526ba5 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -373,7 +373,7 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr, static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb) { - if ((raw6_sk(sk)->checksum || sk->sk_filter) && + if ((raw6_sk(sk)->checksum || rcu_dereference_raw(sk->sk_filter)) && skb_checksum_complete(skb)) { atomic_inc(&sk->sk_drops); kfree_skb(skb); diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index c84dad43211..91def93bec8 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -527,7 +527,7 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb) } } - if (sk->sk_filter) { + if (rcu_dereference_raw(sk->sk_filter)) { if (udp_lib_checksum_complete(skb)) goto drop; } -- cgit v1.2.3-70-g09d2 From 43a951e9994fd218ab4e641f94a2fc53556c3675 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 03:32:44 +0000 Subject: ipv4: add __rcu annotations to ip_ra_chain Add __rcu annotations to : (struct ip_ra_chain)->next struct ip_ra_chain *ip_ra_chain; And use appropriate rcu primitives. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/ip.h | 4 ++-- net/ipv4/ip_sockglue.c | 10 +++++++--- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/include/net/ip.h b/include/net/ip.h index dbee3fe260e..86e2b182a0c 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -59,7 +59,7 @@ struct ipcm_cookie { #define IPCB(skb) ((struct inet_skb_parm*)((skb)->cb)) struct ip_ra_chain { - struct ip_ra_chain *next; + struct ip_ra_chain __rcu *next; struct sock *sk; union { void (*destructor)(struct sock *); @@ -68,7 +68,7 @@ struct ip_ra_chain { struct rcu_head rcu; }; -extern struct ip_ra_chain *ip_ra_chain; +extern struct ip_ra_chain __rcu *ip_ra_chain; /* IP flags. */ #define IP_CE 0x8000 /* Flag: "Congestion" */ diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 64b70ad162e..3948c86e59c 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -238,7 +238,7 @@ int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc) but receiver should be enough clever f.e. to forward mtrace requests, sent to multicast group to reach destination designated router. */ -struct ip_ra_chain *ip_ra_chain; +struct ip_ra_chain __rcu *ip_ra_chain; static DEFINE_SPINLOCK(ip_ra_lock); @@ -253,7 +253,8 @@ static void ip_ra_destroy_rcu(struct rcu_head *head) int ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct sock *)) { - struct ip_ra_chain *ra, *new_ra, **rap; + struct ip_ra_chain *ra, *new_ra; + struct ip_ra_chain __rcu **rap; if (sk->sk_type != SOCK_RAW || inet_sk(sk)->inet_num == IPPROTO_RAW) return -EINVAL; @@ -261,7 +262,10 @@ int ip_ra_control(struct sock *sk, unsigned char on, new_ra = on ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL; spin_lock_bh(&ip_ra_lock); - for (rap = &ip_ra_chain; (ra = *rap) != NULL; rap = &ra->next) { + for (rap = &ip_ra_chain; + (ra = rcu_dereference_protected(*rap, + lockdep_is_held(&ip_ra_lock))) != NULL; + rap = &ra->next) { if (ra->sk == sk) { if (on) { spin_unlock_bh(&ip_ra_lock); -- cgit v1.2.3-70-g09d2 From 10d8c4638c5a797baad5846a3447c0ccca8986a3 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 25 Oct 2010 16:47:36 -0700 Subject: pch_can: depends on PCI Fix pch_can build when CONFIG_PCI is not enabled. It uses pci interfaces and data structures, so it should depend on PCI. drivers/net/can/pch_can.c:1044: error: implicit declaration of function 'pci_enable_msi' drivers/net/can/pch_can.c:1079: error: implicit declaration of function 'pci_disable_msi' Signed-off-by: Randy Dunlap Signed-off-by: David S. Miller --- drivers/net/can/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index a0b02bce694..080574b0fff 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -84,7 +84,7 @@ config CAN_FLEXCAN config PCH_CAN tristate "PCH CAN" - depends on CAN_DEV + depends on CAN_DEV && PCI ---help--- This driver is for PCH CAN of Topcliff which is an IOH for x86 embedded processor. -- cgit v1.2.3-70-g09d2 From 7932c2e55c707350ac166effea2f49afe2e47400 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 26 Oct 2010 09:08:53 -0700 Subject: netfilter: Add missing CONFIG_SYSCTL checks in ipv6's nf_conntrack_reasm.c Reported-by: Randy Dunlap Signed-off-by: David S. Miller --- net/ipv6/netfilter/nf_conntrack_reasm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c index 489d71b844a..3a3f129a44c 100644 --- a/net/ipv6/netfilter/nf_conntrack_reasm.c +++ b/net/ipv6/netfilter/nf_conntrack_reasm.c @@ -625,21 +625,24 @@ int nf_ct_frag6_init(void) inet_frags_init_net(&nf_init_frags); inet_frags_init(&nf_frags); +#ifdef CONFIG_SYSCTL nf_ct_frag6_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path, nf_ct_frag6_sysctl_table); if (!nf_ct_frag6_sysctl_header) { inet_frags_fini(&nf_frags); return -ENOMEM; } +#endif return 0; } void nf_ct_frag6_cleanup(void) { +#ifdef CONFIG_SYSCTL unregister_sysctl_table(nf_ct_frag6_sysctl_header); nf_ct_frag6_sysctl_header = NULL; - +#endif inet_frags_fini(&nf_frags); nf_init_frags.low_thresh = 0; -- cgit v1.2.3-70-g09d2 From 06d6e6d2e4ef61172f342fddeea5cfa465d81578 Mon Sep 17 00:00:00 2001 From: Nicolas Kaiser Date: Tue, 26 Oct 2010 10:02:13 -0700 Subject: drivers/net: sgiseeq: fix return on error If we continue on error, we'd likely free the IRQ that we didn't get, right? Signed-off-by: Nicolas Kaiser Signed-off-by: David S. Miller --- drivers/net/sgiseeq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/sgiseeq.c b/drivers/net/sgiseeq.c index 9265315baa0..3a0cc63428e 100644 --- a/drivers/net/sgiseeq.c +++ b/drivers/net/sgiseeq.c @@ -531,7 +531,7 @@ static int sgiseeq_open(struct net_device *dev) if (request_irq(irq, sgiseeq_interrupt, 0, sgiseeqstr, dev)) { printk(KERN_ERR "Seeq8003: Can't get irq %d\n", dev->irq); - err = -EAGAIN; + return -EAGAIN; } err = init_seeq(dev, sp, sregs); -- cgit v1.2.3-70-g09d2 From 9a27586d3d5c3157260b055d057c6f4f6654c72c Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 05:07:58 +0000 Subject: can: flexcan: fix use after free of priv The priv is part of the memory allocated by alloc_candev(). This patch moved the free it after last usage of priv. Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/flexcan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index ef443a090ba..d4990568bae 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -992,7 +992,6 @@ static int __devexit flexcan_remove(struct platform_device *pdev) unregister_flexcandev(dev); platform_set_drvdata(pdev, NULL); - free_candev(dev); iounmap(priv->base); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -1000,6 +999,8 @@ static int __devexit flexcan_remove(struct platform_device *pdev) clk_put(priv->clk); + free_candev(dev); + return 0; } -- cgit v1.2.3-70-g09d2 From b9958a951ed4f8adff9ce02c2b1cb4ede8e2aa0e Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 06:37:10 +0000 Subject: can: mcp251x: fix reception of standard RTR frames This patch sets the missing CAN_RTR_FLAG if a standard RTR frame is received. (For extended frames the CAN_RTR_FLAG was already set correctly.) Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/mcp251x.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c index 6aadc3e32bd..7ab534aee45 100644 --- a/drivers/net/can/mcp251x.c +++ b/drivers/net/can/mcp251x.c @@ -169,6 +169,7 @@ # define RXBSIDH_SHIFT 3 #define RXBSIDL(n) (((n) * 0x10) + 0x60 + RXBSIDL_OFF) # define RXBSIDL_IDE 0x08 +# define RXBSIDL_SRR 0x10 # define RXBSIDL_EID 3 # define RXBSIDL_SHIFT 5 #define RXBEID8(n) (((n) * 0x10) + 0x60 + RXBEID8_OFF) @@ -475,6 +476,8 @@ static void mcp251x_hw_rx(struct spi_device *spi, int buf_idx) frame->can_id = (buf[RXBSIDH_OFF] << RXBSIDH_SHIFT) | (buf[RXBSIDL_OFF] >> RXBSIDL_SHIFT); + if (buf[RXBSIDL_OFF] & RXBSIDL_SRR) + frame->can_id |= CAN_RTR_FLAG; } /* Data length */ frame->can_dlc = get_can_dlc(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK); -- cgit v1.2.3-70-g09d2 From f2dc0d1809ab7e0147c7e4ac837be1682f706538 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 25 Oct 2010 13:01:55 +0000 Subject: tg3: Do not call device_set_wakeup_enable() under spin_lock_bh The tg3 driver calls device_set_wakeup_enable() under spin_lock_bh, which causes a problem to happen after the recent core power management changes, because this function can sleep now. Fix this by moving the device_set_wakeup_enable() call out of the spin_lock_bh-protected area. Reported-by: Maxim Levitsky Signed-off-by: Rafael J. Wysocki Signed-off-by: David S. Miller --- drivers/net/tg3.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 852e917778f..30ccbb6d097 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -9948,16 +9948,16 @@ static int tg3_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) !((tp->tg3_flags & TG3_FLAG_WOL_CAP) && device_can_wakeup(dp))) return -EINVAL; + device_set_wakeup_enable(dp, wol->wolopts & WAKE_MAGIC); + spin_lock_bh(&tp->lock); - if (wol->wolopts & WAKE_MAGIC) { + if (device_may_wakeup(dp)) tp->tg3_flags |= TG3_FLAG_WOL_ENABLE; - device_set_wakeup_enable(dp, true); - } else { + else tp->tg3_flags &= ~TG3_FLAG_WOL_ENABLE; - device_set_wakeup_enable(dp, false); - } spin_unlock_bh(&tp->lock); + return 0; } -- cgit v1.2.3-70-g09d2 From 1941bf8c8d9392b18cd9bfed8050a2d78850aede Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 25 Oct 2010 16:44:20 +0000 Subject: drivers/atm/eni.c: Remove multiple uses of KERN_ Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- drivers/atm/eni.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index 80f9f3659e4..97c5898cd76 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -1736,9 +1736,10 @@ static int __devinit eni_do_init(struct atm_dev *dev) eprom = (base+EPROM_SIZE-sizeof(struct midway_eprom)); if (readl(&eprom->magic) != ENI155_MAGIC) { printk("\n"); - printk(KERN_ERR KERN_ERR DEV_LABEL "(itf %d): bad " - "magic - expected 0x%x, got 0x%x\n",dev->number, - ENI155_MAGIC,(unsigned) readl(&eprom->magic)); + printk(KERN_ERR DEV_LABEL + "(itf %d): bad magic - expected 0x%x, got 0x%x\n", + dev->number, ENI155_MAGIC, + (unsigned)readl(&eprom->magic)); error = -EINVAL; goto unmap; } -- cgit v1.2.3-70-g09d2 From ebb9fed2defa55f2ca91c8be582c59612e9940d1 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 23 Oct 2010 09:44:25 +0000 Subject: fib: fix fib_nl_newrule() Some panic reports in fib_rules_lookup() show a rule could have a NULL pointer as a next pointer in the rules_list. This can actually happen because of a bug in fib_nl_newrule() : It checks if current rule is the destination of unresolved gotos. (Other rules have gotos to this about to be inserted rule) Problem is it does the resolution of the gotos before the rule is inserted in the rules_list (and has a valid next pointer) Fix this by moving the rules_list insertion before the changes on gotos. A lockless reader can not any more follow a ctarget pointer, unless destination is ready (has a valid next pointer) Reported-by: Oleg A. Arkhangelsky Reported-by: Joe Buehler Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/fib_rules.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index 1bc3f253ba6..12b43cc2f88 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -373,6 +373,11 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) fib_rule_get(rule); + if (last) + list_add_rcu(&rule->list, &last->list); + else + list_add_rcu(&rule->list, &ops->rules_list); + if (ops->unresolved_rules) { /* * There are unresolved goto rules in the list, check if @@ -395,11 +400,6 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) if (unresolved) ops->unresolved_rules++; - if (last) - list_add_rcu(&rule->list, &last->list); - else - list_add_rcu(&rule->list, &ops->rules_list); - notify_rule_change(RTM_NEWRULE, rule, ops, nlh, NETLINK_CB(skb).pid); flush_route_cache(ops); rules_ops_put(ops); -- cgit v1.2.3-70-g09d2 From ded85aa86bff953190cb893fceeecaadcab53a80 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 26 Oct 2010 03:24:16 +0000 Subject: fib_hash: fix rcu sparse and logical errors While fixing CONFIG_SPARSE_RCU_POINTER errors, I had to fix accesses to fz->fz_hash for real. - &fz->fz_hash[fn_hash(f->fn_key, fz)] + rcu_dereference(fz->fz_hash) + fn_hash(f->fn_key, fz) Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/fib_hash.c | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-) diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c index 43e1c594ce8..b232375a0b7 100644 --- a/net/ipv4/fib_hash.c +++ b/net/ipv4/fib_hash.c @@ -120,11 +120,12 @@ static inline void fn_rebuild_zone(struct fn_zone *fz, struct fib_node *f; hlist_for_each_entry_safe(f, node, n, &old_ht[i], fn_hash) { - struct hlist_head __rcu *new_head; + struct hlist_head *new_head; hlist_del_rcu(&f->fn_hash); - new_head = &fz->fz_hash[fn_hash(f->fn_key, fz)]; + new_head = rcu_dereference_protected(fz->fz_hash, 1) + + fn_hash(f->fn_key, fz); hlist_add_head_rcu(&f->fn_hash, new_head); } } @@ -179,8 +180,8 @@ static void fn_rehash_zone(struct fn_zone *fz) memcpy(&nfz, fz, sizeof(nfz)); write_seqlock_bh(&fz->fz_lock); - old_ht = fz->fz_hash; - nfz.fz_hash = ht; + old_ht = rcu_dereference_protected(fz->fz_hash, 1); + RCU_INIT_POINTER(nfz.fz_hash, ht); nfz.fz_hashmask = new_hashmask; nfz.fz_divisor = new_divisor; fn_rebuild_zone(&nfz, old_ht, old_divisor); @@ -236,7 +237,7 @@ fn_new_zone(struct fn_hash *table, int z) seqlock_init(&fz->fz_lock); fz->fz_divisor = z ? EMBEDDED_HASH_SIZE : 1; fz->fz_hashmask = fz->fz_divisor - 1; - fz->fz_hash = fz->fz_embedded_hash; + RCU_INIT_POINTER(fz->fz_hash, fz->fz_embedded_hash); fz->fz_order = z; fz->fz_revorder = 32 - z; fz->fz_mask = inet_make_mask(z); @@ -272,7 +273,7 @@ int fib_table_lookup(struct fib_table *tb, for (fz = rcu_dereference(t->fn_zone_list); fz != NULL; fz = rcu_dereference(fz->fz_next)) { - struct hlist_head __rcu *head; + struct hlist_head *head; struct hlist_node *node; struct fib_node *f; __be32 k; @@ -282,7 +283,7 @@ int fib_table_lookup(struct fib_table *tb, seq = read_seqbegin(&fz->fz_lock); k = fz_key(flp->fl4_dst, fz); - head = &fz->fz_hash[fn_hash(k, fz)]; + head = rcu_dereference(fz->fz_hash) + fn_hash(k, fz); hlist_for_each_entry_rcu(f, node, head, fn_hash) { if (f->fn_key != k) continue; @@ -311,6 +312,7 @@ void fib_table_select_default(struct fib_table *tb, struct fib_info *last_resort; struct fn_hash *t = (struct fn_hash *)tb->tb_data; struct fn_zone *fz = t->fn_zones[0]; + struct hlist_head *head; if (fz == NULL) return; @@ -320,7 +322,8 @@ void fib_table_select_default(struct fib_table *tb, order = -1; rcu_read_lock(); - hlist_for_each_entry_rcu(f, node, &fz->fz_hash[0], fn_hash) { + head = rcu_dereference(fz->fz_hash); + hlist_for_each_entry_rcu(f, node, head, fn_hash) { struct fib_alias *fa; list_for_each_entry_rcu(fa, &f->fn_alias, fa_list) { @@ -374,7 +377,7 @@ out: /* Insert node F to FZ. */ static inline void fib_insert_node(struct fn_zone *fz, struct fib_node *f) { - struct hlist_head *head = &fz->fz_hash[fn_hash(f->fn_key, fz)]; + struct hlist_head *head = rtnl_dereference(fz->fz_hash) + fn_hash(f->fn_key, fz); hlist_add_head_rcu(&f->fn_hash, head); } @@ -382,7 +385,7 @@ static inline void fib_insert_node(struct fn_zone *fz, struct fib_node *f) /* Return the node in FZ matching KEY. */ static struct fib_node *fib_find_node(struct fn_zone *fz, __be32 key) { - struct hlist_head *head = &fz->fz_hash[fn_hash(key, fz)]; + struct hlist_head *head = rtnl_dereference(fz->fz_hash) + fn_hash(key, fz); struct hlist_node *node; struct fib_node *f; @@ -662,7 +665,7 @@ int fib_table_delete(struct fib_table *tb, struct fib_config *cfg) static int fn_flush_list(struct fn_zone *fz, int idx) { - struct hlist_head *head = &fz->fz_hash[idx]; + struct hlist_head *head = rtnl_dereference(fz->fz_hash) + idx; struct hlist_node *node, *n; struct fib_node *f; int found = 0; @@ -761,14 +764,15 @@ fn_hash_dump_zone(struct sk_buff *skb, struct netlink_callback *cb, struct fn_zone *fz) { int h, s_h; + struct hlist_head *head = rcu_dereference(fz->fz_hash); - if (fz->fz_hash == NULL) + if (head == NULL) return skb->len; s_h = cb->args[3]; for (h = s_h; h < fz->fz_divisor; h++) { - if (hlist_empty(&fz->fz_hash[h])) + if (hlist_empty(head + h)) continue; - if (fn_hash_dump_bucket(skb, cb, tb, fz, &fz->fz_hash[h]) < 0) { + if (fn_hash_dump_bucket(skb, cb, tb, fz, head + h) < 0) { cb->args[3] = h; return -1; } @@ -872,7 +876,7 @@ static struct fib_alias *fib_get_first(struct seq_file *seq) if (!iter->zone->fz_nent) continue; - iter->hash_head = iter->zone->fz_hash; + iter->hash_head = rcu_dereference(iter->zone->fz_hash); maxslot = iter->zone->fz_divisor; for (iter->bucket = 0; iter->bucket < maxslot; @@ -957,7 +961,7 @@ static struct fib_alias *fib_get_next(struct seq_file *seq) goto out; iter->bucket = 0; - iter->hash_head = iter->zone->fz_hash; + iter->hash_head = rcu_dereference(iter->zone->fz_hash); hlist_for_each_entry(fn, node, iter->hash_head, fn_hash) { list_for_each_entry(fa, &fn->fn_alias, fa_list) { -- cgit v1.2.3-70-g09d2 From aed65501e8c072b52c5b4dc807cd938659329673 Mon Sep 17 00:00:00 2001 From: Glenn Wurster Date: Mon, 27 Sep 2010 07:04:30 +0000 Subject: IPv6: Create temporary address if none exists. If privacy extentions are enabled, but no current temporary address exists, then create one when we get a router advertisement. Signed-off-by: Glenn Wurster Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index ec7a91d9e86..8ed6763dae9 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2021,10 +2021,11 @@ ok: ipv6_ifa_notify(0, ift); } - if (create && in6_dev->cnf.use_tempaddr > 0) { + if ((create || list_empty(&in6_dev->tempaddr_list)) && in6_dev->cnf.use_tempaddr > 0) { /* * When a new public address is created as described in [ADDRCONF], - * also create a new temporary address. + * also create a new temporary address. Also create a temporary + * address if it's enabled but no temporary address currently exists. */ read_unlock_bh(&in6_dev->lock); ipv6_create_tempaddr(ifp, NULL); -- cgit v1.2.3-70-g09d2 From 7a876b0efcba3804da3051313445fa7be751cab7 Mon Sep 17 00:00:00 2001 From: Glenn Wurster Date: Mon, 27 Sep 2010 07:10:10 +0000 Subject: IPv6: Temp addresses are immediately deleted. There is a bug in the interaction between ipv6_create_tempaddr and addrconf_verify. Because ipv6_create_tempaddr uses the cstamp and tstamp from the public address in creating a private address, if we have not received a router advertisement in a while, tstamp + temp_valid_lft might be < now. If this happens, the new address is created inside ipv6_create_tempaddr, then the loop within addrconf_verify starts again and the address is immediately deleted. We are left with no temporary addresses on the interface, and no more will be created until the public IP address is updated. To avoid this, set the expiry time to be the minimum of the time left on the public address or the config option PLUS the current age of the public interface. Signed-off-by: Glenn Wurster Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 8ed6763dae9..ef6fc16ae5d 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -836,7 +836,7 @@ static int ipv6_create_tempaddr(struct inet6_ifaddr *ifp, struct inet6_ifaddr *i { struct inet6_dev *idev = ifp->idev; struct in6_addr addr, *tmpaddr; - unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_cstamp, tmp_tstamp; + unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_cstamp, tmp_tstamp, age; unsigned long regen_advance; int tmp_plen; int ret = 0; @@ -886,12 +886,13 @@ retry: goto out; } memcpy(&addr.s6_addr[8], idev->rndid, 8); + age = (jiffies - ifp->tstamp) / HZ; tmp_valid_lft = min_t(__u32, ifp->valid_lft, - idev->cnf.temp_valid_lft); + idev->cnf.temp_valid_lft + age); tmp_prefered_lft = min_t(__u32, ifp->prefered_lft, - idev->cnf.temp_prefered_lft - + idev->cnf.temp_prefered_lft + age - idev->cnf.max_desync_factor); tmp_plen = ifp->prefix_len; max_addresses = idev->cnf.max_addresses; -- cgit v1.2.3-70-g09d2 From cd0ea2419544cfc4ccbf8ee0087d0d9f109852d2 Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Tue, 19 Oct 2010 00:06:36 +0000 Subject: gianfar: Fix crashes on RX path (Was Re: [Bugme-new] [Bug 19692] New: linux-2.6.36-rc5 crash with gianfar ethernet at full line rate traffic) The rx_recycle queue is global per device but can be accesed by many napi handlers at the same time, so it needs full skb_queue primitives (with locking). Otherwise, various crashes caused by broken skbs are possible. This patch resolves, at least partly, bugzilla bug 19692. (Because of some doubts that there could be still something around which is hard to reproduce my proposal is to leave this bug opened for a month.) Fixes commit: 0fd56bb5be6455d0d42241e65aed057244665e5e ("gianfar: Add support for skb recycling") Reported-by: emin ak Tested-by: emin ak Signed-off-by: Jarek Poplawski CC: Andy Fleming Signed-off-by: David S. Miller --- drivers/net/gianfar.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index 4c4cc80ec0a..49e4ce1246a 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -2511,7 +2511,7 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) skb_recycle_check(skb, priv->rx_buffer_size + RXBUF_ALIGNMENT)) { gfar_align_skb(skb); - __skb_queue_head(&priv->rx_recycle, skb); + skb_queue_head(&priv->rx_recycle, skb); } else dev_kfree_skb_any(skb); @@ -2594,7 +2594,7 @@ struct sk_buff * gfar_new_skb(struct net_device *dev) struct gfar_private *priv = netdev_priv(dev); struct sk_buff *skb = NULL; - skb = __skb_dequeue(&priv->rx_recycle); + skb = skb_dequeue(&priv->rx_recycle); if (!skb) skb = gfar_alloc_skb(dev); @@ -2750,7 +2750,7 @@ int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit) if (unlikely(!newskb)) newskb = skb; else if (skb) - __skb_queue_head(&priv->rx_recycle, skb); + skb_queue_head(&priv->rx_recycle, skb); } else { /* Increment the number of packets */ rx_queue->stats.rx_packets++; -- cgit v1.2.3-70-g09d2 From af1905dbec44445d75851996819ac2203670bd0f Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 22 Oct 2010 04:12:19 +0000 Subject: net: Fix some corner cases in dev_can_checksum() dev_can_checksum() incorrectly returns true in these cases: 1. The skb has both out-of-band and in-band VLAN tags and the device supports checksum offload for the encapsulated protocol but only with one layer of encapsulation. 2. The skb has a VLAN tag and the device supports generic checksumming but not in conjunction with VLAN encapsulation. Rearrange the VLAN tag checks to avoid these. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- net/core/dev.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index e8a8dc19365..3c5fbfbb318 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1696,22 +1696,18 @@ static bool can_checksum_protocol(unsigned long features, __be16 protocol) static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb) { + __be16 protocol = skb->protocol; int features = dev->features; - if (vlan_tx_tag_present(skb)) + if (vlan_tx_tag_present(skb)) { features &= dev->vlan_features; - - if (can_checksum_protocol(features, skb->protocol)) - return true; - - if (skb->protocol == htons(ETH_P_8021Q)) { + } else if (protocol == htons(ETH_P_8021Q)) { struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data; - if (can_checksum_protocol(dev->features & dev->vlan_features, - veh->h_vlan_encapsulated_proto)) - return true; + protocol = veh->h_vlan_encapsulated_proto; + features &= dev->vlan_features; } - return false; + return can_checksum_protocol(features, protocol); } /** -- cgit v1.2.3-70-g09d2 From 66c68bcc489fadd4f5e8839e966e3a366e50d1d5 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 22 Oct 2010 04:38:26 +0000 Subject: net: NETIF_F_HW_CSUM does not imply FCoE CRC offload NETIF_F_HW_CSUM indicates the ability to update an TCP/IP-style 16-bit checksum with the checksum of an arbitrary part of the packet data, whereas the FCoE CRC is something entirely different. Signed-off-by: Ben Hutchings Cc: stable@kernel.org [2.6.32+] Signed-off-by: David S. Miller --- net/core/dev.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index 3c5fbfbb318..35dfb831848 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1685,10 +1685,10 @@ EXPORT_SYMBOL(netif_device_attach); static bool can_checksum_protocol(unsigned long features, __be16 protocol) { - return ((features & NETIF_F_GEN_CSUM) || - ((features & NETIF_F_IP_CSUM) && + return ((features & NETIF_F_NO_CSUM) || + ((features & NETIF_F_V4_CSUM) && protocol == htons(ETH_P_IP)) || - ((features & NETIF_F_IPV6_CSUM) && + ((features & NETIF_F_V6_CSUM) && protocol == htons(ETH_P_IPV6)) || ((features & NETIF_F_FCOE_CRC) && protocol == htons(ETH_P_FCOE))); -- cgit v1.2.3-70-g09d2 From 853dc2e03ddd0c49885ed55c48755d2b1073122a Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Sun, 24 Oct 2010 23:06:43 +0000 Subject: ipv6: fix refcnt problem related to POSTDAD state After running this bonding setup script modprobe bonding miimon=100 mode=0 max_bonds=1 ifconfig bond0 10.1.1.1/16 ifenslave bond0 eth1 ifenslave bond0 eth3 on s390 with qeth-driven slaves, modprobe -r fails with this message unregister_netdevice: waiting for bond0 to become free. Usage count = 1 due to twice detection of duplicate address. Problem is caused by a missing decrease of ifp->refcnt in addrconf_dad_failure. An extra call of in6_ifa_put(ifp) solves it. Problem has been introduced with commit f2344a131bccdbfc5338e17fa71a807dee7944fa. Signed-off-by: Ursula Braun Cc: David S. Miller Cc: Herbert Xu Acked-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index ef6fc16ae5d..e048ec62d10 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1427,8 +1427,10 @@ void addrconf_dad_failure(struct inet6_ifaddr *ifp) { struct inet6_dev *idev = ifp->idev; - if (addrconf_dad_end(ifp)) + if (addrconf_dad_end(ifp)) { + in6_ifa_put(ifp); return; + } if (net_ratelimit()) printk(KERN_INFO "%s: IPv6 duplicate address %pI6c detected!\n", -- cgit v1.2.3-70-g09d2 From f203af7088cad0845ee128bb736bd372158c3e22 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Mon, 25 Oct 2010 23:01:03 +0000 Subject: be2net: Schedule/Destroy worker thread in probe()/remove() rather than open()/close() When async mcc compls are rcvd on an i/f that is down (and so interrupts are disabled) they just lie unprocessed in the compl queue.The compl queue can eventually get filled up and cause the BE to lock up.The fix is to use be_worker to reap mcc compls when the i/f is down.be_worker is now launched in be_probe() and canceled in be_remove(). Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller --- drivers/net/benet/be_main.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 6b80a06eb3a..c36cd2ffbad 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -1802,6 +1802,20 @@ static void be_worker(struct work_struct *work) struct be_rx_obj *rxo; int i; + /* when interrupts are not yet enabled, just reap any pending + * mcc completions */ + if (!netif_running(adapter->netdev)) { + int mcc_compl, status = 0; + + mcc_compl = be_process_mcc(adapter, &status); + + if (mcc_compl) { + struct be_mcc_obj *mcc_obj = &adapter->mcc_obj; + be_cq_notify(adapter, mcc_obj->cq.id, false, mcc_compl); + } + goto reschedule; + } + if (!adapter->stats_ioctl_sent) be_cmd_get_stats(adapter, &adapter->stats_cmd); @@ -1820,6 +1834,7 @@ static void be_worker(struct work_struct *work) if (!adapter->ue_detected) be_detect_dump_ue(adapter); +reschedule: schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000)); } @@ -2015,8 +2030,6 @@ static int be_close(struct net_device *netdev) struct be_eq_obj *tx_eq = &adapter->tx_eq; int vec, i; - cancel_delayed_work_sync(&adapter->work); - be_async_mcc_disable(adapter); netif_stop_queue(netdev); @@ -2081,8 +2094,6 @@ static int be_open(struct net_device *netdev) /* Now that interrupts are on we can process async mcc */ be_async_mcc_enable(adapter); - schedule_delayed_work(&adapter->work, msecs_to_jiffies(100)); - status = be_cmd_link_status_query(adapter, &link_up, &mac_speed, &link_speed); if (status) @@ -2707,6 +2718,8 @@ static void __devexit be_remove(struct pci_dev *pdev) if (!adapter) return; + cancel_delayed_work_sync(&adapter->work); + unregister_netdev(adapter->netdev); be_clear(adapter); @@ -2863,6 +2876,7 @@ static int __devinit be_probe(struct pci_dev *pdev, netif_carrier_off(netdev); dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num); + schedule_delayed_work(&adapter->work, msecs_to_jiffies(100)); return 0; unsetup: -- cgit v1.2.3-70-g09d2 From c1b60092cf307fef12f793abf7cf8167e26a6ccf Mon Sep 17 00:00:00 2001 From: Ron Mercer Date: Wed, 27 Oct 2010 04:58:12 +0000 Subject: qlge: bugfix: Restoring the vlan setting. Signed-off-by: Jitendra Kalsaria Signed-off-by: Ron Mercer Signed-off-by: David S. Miller --- drivers/net/qlge/qlge_main.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c index e6210563abd..c30e0fe55a3 100644 --- a/drivers/net/qlge/qlge_main.c +++ b/drivers/net/qlge/qlge_main.c @@ -2385,6 +2385,20 @@ static void qlge_vlan_rx_kill_vid(struct net_device *ndev, u16 vid) } +static void qlge_restore_vlan(struct ql_adapter *qdev) +{ + qlge_vlan_rx_register(qdev->ndev, qdev->vlgrp); + + if (qdev->vlgrp) { + u16 vid; + for (vid = 0; vid < VLAN_N_VID; vid++) { + if (!vlan_group_get_device(qdev->vlgrp, vid)) + continue; + qlge_vlan_rx_add_vid(qdev->ndev, vid); + } + } +} + /* MSI-X Multiple Vector Interrupt Handler for inbound completions. */ static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id) { @@ -3960,6 +3974,9 @@ static int ql_adapter_up(struct ql_adapter *qdev) clear_bit(QL_PROMISCUOUS, &qdev->flags); qlge_set_multicast_list(qdev->ndev); + /* Restore vlan setting. */ + qlge_restore_vlan(qdev); + ql_enable_interrupts(qdev); ql_enable_all_completion_interrupts(qdev); netif_tx_start_all_queues(qdev->ndev); -- cgit v1.2.3-70-g09d2 From 1c31720a74e19bb57f301350a3b03210fa2ba9e3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 21:02:07 +0000 Subject: ipv4: add __rcu annotations to routes.c Add __rcu annotations to : (struct dst_entry)->rt_next (struct rt_hash_bucket)->chain And use appropriate rcu primitives to reduce sparse warnings if CONFIG_SPARSE_RCU_POINTER=y Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/dst.h | 2 +- net/ipv4/route.c | 75 ++++++++++++++++++++++++++++++++++--------------------- 2 files changed, 47 insertions(+), 30 deletions(-) diff --git a/include/net/dst.h b/include/net/dst.h index a217c838ec0..ffe9cb719c0 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -95,7 +95,7 @@ struct dst_entry { unsigned long lastuse; union { struct dst_entry *next; - struct rtable *rt_next; + struct rtable __rcu *rt_next; struct rt6_info *rt6_next; struct dn_route *dn_next; }; diff --git a/net/ipv4/route.c b/net/ipv4/route.c index d6cb2bfcd8e..987bf9adb31 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -198,7 +198,7 @@ const __u8 ip_tos2prio[16] = { */ struct rt_hash_bucket { - struct rtable *chain; + struct rtable __rcu *chain; }; #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) || \ @@ -280,7 +280,7 @@ static struct rtable *rt_cache_get_first(struct seq_file *seq) struct rtable *r = NULL; for (st->bucket = rt_hash_mask; st->bucket >= 0; --st->bucket) { - if (!rt_hash_table[st->bucket].chain) + if (!rcu_dereference_raw(rt_hash_table[st->bucket].chain)) continue; rcu_read_lock_bh(); r = rcu_dereference_bh(rt_hash_table[st->bucket].chain); @@ -300,17 +300,17 @@ static struct rtable *__rt_cache_get_next(struct seq_file *seq, { struct rt_cache_iter_state *st = seq->private; - r = r->dst.rt_next; + r = rcu_dereference_bh(r->dst.rt_next); while (!r) { rcu_read_unlock_bh(); do { if (--st->bucket < 0) return NULL; - } while (!rt_hash_table[st->bucket].chain); + } while (!rcu_dereference_raw(rt_hash_table[st->bucket].chain)); rcu_read_lock_bh(); - r = rt_hash_table[st->bucket].chain; + r = rcu_dereference_bh(rt_hash_table[st->bucket].chain); } - return rcu_dereference_bh(r); + return r; } static struct rtable *rt_cache_get_next(struct seq_file *seq, @@ -721,19 +721,23 @@ static void rt_do_flush(int process_context) for (i = 0; i <= rt_hash_mask; i++) { if (process_context && need_resched()) cond_resched(); - rth = rt_hash_table[i].chain; + rth = rcu_dereference_raw(rt_hash_table[i].chain); if (!rth) continue; spin_lock_bh(rt_hash_lock_addr(i)); #ifdef CONFIG_NET_NS { - struct rtable ** prev, * p; + struct rtable __rcu **prev; + struct rtable *p; - rth = rt_hash_table[i].chain; + rth = rcu_dereference_protected(rt_hash_table[i].chain, + lockdep_is_held(rt_hash_lock_addr(i))); /* defer releasing the head of the list after spin_unlock */ - for (tail = rth; tail; tail = tail->dst.rt_next) + for (tail = rth; tail; + tail = rcu_dereference_protected(tail->dst.rt_next, + lockdep_is_held(rt_hash_lock_addr(i)))) if (!rt_is_expired(tail)) break; if (rth != tail) @@ -741,8 +745,12 @@ static void rt_do_flush(int process_context) /* call rt_free on entries after the tail requiring flush */ prev = &rt_hash_table[i].chain; - for (p = *prev; p; p = next) { - next = p->dst.rt_next; + for (p = rcu_dereference_protected(*prev, + lockdep_is_held(rt_hash_lock_addr(i))); + p != NULL; + p = next) { + next = rcu_dereference_protected(p->dst.rt_next, + lockdep_is_held(rt_hash_lock_addr(i))); if (!rt_is_expired(p)) { prev = &p->dst.rt_next; } else { @@ -752,14 +760,15 @@ static void rt_do_flush(int process_context) } } #else - rth = rt_hash_table[i].chain; - rt_hash_table[i].chain = NULL; + rth = rcu_dereference_protected(rt_hash_table[i].chain, + lockdep_is_held(rt_hash_lock_addr(i))); + rcu_assign_pointer(rt_hash_table[i].chain, NULL); tail = NULL; #endif spin_unlock_bh(rt_hash_lock_addr(i)); for (; rth != tail; rth = next) { - next = rth->dst.rt_next; + next = rcu_dereference_protected(rth->dst.rt_next, 1); rt_free(rth); } } @@ -790,7 +799,7 @@ static int has_noalias(const struct rtable *head, const struct rtable *rth) while (aux != rth) { if (compare_hash_inputs(&aux->fl, &rth->fl)) return 0; - aux = aux->dst.rt_next; + aux = rcu_dereference_protected(aux->dst.rt_next, 1); } return ONE; } @@ -799,7 +808,8 @@ static void rt_check_expire(void) { static unsigned int rover; unsigned int i = rover, goal; - struct rtable *rth, **rthp; + struct rtable *rth; + struct rtable __rcu **rthp; unsigned long samples = 0; unsigned long sum = 0, sum2 = 0; unsigned long delta; @@ -825,11 +835,12 @@ static void rt_check_expire(void) samples++; - if (*rthp == NULL) + if (rcu_dereference_raw(*rthp) == NULL) continue; length = 0; spin_lock_bh(rt_hash_lock_addr(i)); - while ((rth = *rthp) != NULL) { + while ((rth = rcu_dereference_protected(*rthp, + lockdep_is_held(rt_hash_lock_addr(i)))) != NULL) { prefetch(rth->dst.rt_next); if (rt_is_expired(rth)) { *rthp = rth->dst.rt_next; @@ -941,7 +952,8 @@ static int rt_garbage_collect(struct dst_ops *ops) static unsigned long last_gc; static int rover; static int equilibrium; - struct rtable *rth, **rthp; + struct rtable *rth; + struct rtable __rcu **rthp; unsigned long now = jiffies; int goal; int entries = dst_entries_get_fast(&ipv4_dst_ops); @@ -995,7 +1007,8 @@ static int rt_garbage_collect(struct dst_ops *ops) k = (k + 1) & rt_hash_mask; rthp = &rt_hash_table[k].chain; spin_lock_bh(rt_hash_lock_addr(k)); - while ((rth = *rthp) != NULL) { + while ((rth = rcu_dereference_protected(*rthp, + lockdep_is_held(rt_hash_lock_addr(k)))) != NULL) { if (!rt_is_expired(rth) && !rt_may_expire(rth, tmo, expire)) { tmo >>= 1; @@ -1071,7 +1084,7 @@ static int slow_chain_length(const struct rtable *head) while (rth) { length += has_noalias(head, rth); - rth = rth->dst.rt_next; + rth = rcu_dereference_protected(rth->dst.rt_next, 1); } return length >> FRACT_BITS; } @@ -1079,9 +1092,9 @@ static int slow_chain_length(const struct rtable *head) static int rt_intern_hash(unsigned hash, struct rtable *rt, struct rtable **rp, struct sk_buff *skb, int ifindex) { - struct rtable *rth, **rthp; + struct rtable *rth, *cand; + struct rtable __rcu **rthp, **candp; unsigned long now; - struct rtable *cand, **candp; u32 min_score; int chain_length; int attempts = !in_softirq(); @@ -1128,7 +1141,8 @@ restart: rthp = &rt_hash_table[hash].chain; spin_lock_bh(rt_hash_lock_addr(hash)); - while ((rth = *rthp) != NULL) { + while ((rth = rcu_dereference_protected(*rthp, + lockdep_is_held(rt_hash_lock_addr(hash)))) != NULL) { if (rt_is_expired(rth)) { *rthp = rth->dst.rt_next; rt_free(rth); @@ -1324,12 +1338,14 @@ EXPORT_SYMBOL(__ip_select_ident); static void rt_del(unsigned hash, struct rtable *rt) { - struct rtable **rthp, *aux; + struct rtable __rcu **rthp; + struct rtable *aux; rthp = &rt_hash_table[hash].chain; spin_lock_bh(rt_hash_lock_addr(hash)); ip_rt_put(rt); - while ((aux = *rthp) != NULL) { + while ((aux = rcu_dereference_protected(*rthp, + lockdep_is_held(rt_hash_lock_addr(hash)))) != NULL) { if (aux == rt || rt_is_expired(aux)) { *rthp = aux->dst.rt_next; rt_free(aux); @@ -1346,7 +1362,8 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw, { int i, k; struct in_device *in_dev = __in_dev_get_rcu(dev); - struct rtable *rth, **rthp; + struct rtable *rth; + struct rtable __rcu **rthp; __be32 skeys[2] = { saddr, 0 }; int ikeys[2] = { dev->ifindex, 0 }; struct netevent_redirect netevent; @@ -1379,7 +1396,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw, unsigned hash = rt_hash(daddr, skeys[i], ikeys[k], rt_genid(net)); - rthp=&rt_hash_table[hash].chain; + rthp = &rt_hash_table[hash].chain; while ((rth = rcu_dereference(*rthp)) != NULL) { struct rtable *rt; -- cgit v1.2.3-70-g09d2 From e0ad61ec867fdd262804afa7a68e11fc9930c2b9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 21:02:28 +0000 Subject: net: add __rcu annotations to protocol Add __rcu annotations to : struct net_protocol *inet_protos struct net_protocol *inet6_protos And use appropriate casts to reduce sparse warnings if CONFIG_SPARSE_RCU_POINTER=y Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/protocol.h | 4 ++-- net/ipv4/protocol.c | 8 +++++--- net/ipv6/protocol.c | 8 +++++--- 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/include/net/protocol.h b/include/net/protocol.h index f1effdd3c26..dc07495bce4 100644 --- a/include/net/protocol.h +++ b/include/net/protocol.h @@ -89,10 +89,10 @@ struct inet_protosw { #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */ #define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */ -extern const struct net_protocol *inet_protos[MAX_INET_PROTOS]; +extern const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS]; #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) -extern const struct inet6_protocol *inet6_protos[MAX_INET_PROTOS]; +extern const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS]; #endif extern int inet_add_protocol(const struct net_protocol *prot, unsigned char num); diff --git a/net/ipv4/protocol.c b/net/ipv4/protocol.c index 65699c24411..9ae5c01cd0b 100644 --- a/net/ipv4/protocol.c +++ b/net/ipv4/protocol.c @@ -28,7 +28,7 @@ #include #include -const struct net_protocol *inet_protos[MAX_INET_PROTOS] __read_mostly; +const struct net_protocol __rcu *inet_protos[MAX_INET_PROTOS] __read_mostly; /* * Add a protocol handler to the hash tables @@ -38,7 +38,8 @@ int inet_add_protocol(const struct net_protocol *prot, unsigned char protocol) { int hash = protocol & (MAX_INET_PROTOS - 1); - return !cmpxchg(&inet_protos[hash], NULL, prot) ? 0 : -1; + return !cmpxchg((const struct net_protocol **)&inet_protos[hash], + NULL, prot) ? 0 : -1; } EXPORT_SYMBOL(inet_add_protocol); @@ -50,7 +51,8 @@ int inet_del_protocol(const struct net_protocol *prot, unsigned char protocol) { int ret, hash = protocol & (MAX_INET_PROTOS - 1); - ret = (cmpxchg(&inet_protos[hash], prot, NULL) == prot) ? 0 : -1; + ret = (cmpxchg((const struct net_protocol **)&inet_protos[hash], + prot, NULL) == prot) ? 0 : -1; synchronize_net(); diff --git a/net/ipv6/protocol.c b/net/ipv6/protocol.c index 9bb936ae245..9a7978fdc02 100644 --- a/net/ipv6/protocol.c +++ b/net/ipv6/protocol.c @@ -25,13 +25,14 @@ #include #include -const struct inet6_protocol *inet6_protos[MAX_INET_PROTOS] __read_mostly; +const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly; int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol) { int hash = protocol & (MAX_INET_PROTOS - 1); - return !cmpxchg(&inet6_protos[hash], NULL, prot) ? 0 : -1; + return !cmpxchg((const struct inet6_protocol **)&inet6_protos[hash], + NULL, prot) ? 0 : -1; } EXPORT_SYMBOL(inet6_add_protocol); @@ -43,7 +44,8 @@ int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol { int ret, hash = protocol & (MAX_INET_PROTOS - 1); - ret = (cmpxchg(&inet6_protos[hash], prot, NULL) == prot) ? 0 : -1; + ret = (cmpxchg((const struct inet6_protocol **)&inet6_protos[hash], + prot, NULL) == prot) ? 0 : -1; synchronize_net(); -- cgit v1.2.3-70-g09d2 From b33eab08445d86c3d0dec3111ce10df561328705 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 21:01:26 +0000 Subject: tunnels: add __rcu annotations Add __rcu annotations to : (struct ip_tunnel)->prl (struct ip_tunnel_prl_entry)->next (struct xfrm_tunnel)->next struct xfrm_tunnel *tunnel4_handlers struct xfrm_tunnel *tunnel64_handlers And use appropriate rcu primitives to reduce sparse warnings if CONFIG_SPARSE_RCU_POINTER=y Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/ipip.h | 4 ++-- include/net/xfrm.h | 2 +- net/ipv4/tunnel4.c | 29 +++++++++++++++++++---------- 3 files changed, 22 insertions(+), 13 deletions(-) diff --git a/include/net/ipip.h b/include/net/ipip.h index 0403fe4c451..a32654d5273 100644 --- a/include/net/ipip.h +++ b/include/net/ipip.h @@ -34,12 +34,12 @@ struct ip_tunnel { #ifdef CONFIG_IPV6_SIT_6RD struct ip_tunnel_6rd_parm ip6rd; #endif - struct ip_tunnel_prl_entry *prl; /* potential router list */ + struct ip_tunnel_prl_entry __rcu *prl; /* potential router list */ unsigned int prl_count; /* # of entries in PRL */ }; struct ip_tunnel_prl_entry { - struct ip_tunnel_prl_entry *next; + struct ip_tunnel_prl_entry __rcu *next; __be32 addr; u16 flags; struct rcu_head rcu_head; diff --git a/include/net/xfrm.h b/include/net/xfrm.h index ffcd47820a5..bcfb6b24b01 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1264,7 +1264,7 @@ struct xfrm_tunnel { int (*handler)(struct sk_buff *skb); int (*err_handler)(struct sk_buff *skb, u32 info); - struct xfrm_tunnel *next; + struct xfrm_tunnel __rcu *next; int priority; }; diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c index 9a17bd2a0a3..ac3b3ee4b07 100644 --- a/net/ipv4/tunnel4.c +++ b/net/ipv4/tunnel4.c @@ -14,27 +14,32 @@ #include #include -static struct xfrm_tunnel *tunnel4_handlers __read_mostly; -static struct xfrm_tunnel *tunnel64_handlers __read_mostly; +static struct xfrm_tunnel __rcu *tunnel4_handlers __read_mostly; +static struct xfrm_tunnel __rcu *tunnel64_handlers __read_mostly; static DEFINE_MUTEX(tunnel4_mutex); -static inline struct xfrm_tunnel **fam_handlers(unsigned short family) +static inline struct xfrm_tunnel __rcu **fam_handlers(unsigned short family) { return (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers; } int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family) { - struct xfrm_tunnel **pprev; + struct xfrm_tunnel __rcu **pprev; + struct xfrm_tunnel *t; + int ret = -EEXIST; int priority = handler->priority; mutex_lock(&tunnel4_mutex); - for (pprev = fam_handlers(family); *pprev; pprev = &(*pprev)->next) { - if ((*pprev)->priority > priority) + for (pprev = fam_handlers(family); + (t = rcu_dereference_protected(*pprev, + lockdep_is_held(&tunnel4_mutex))) != NULL; + pprev = &t->next) { + if (t->priority > priority) break; - if ((*pprev)->priority == priority) + if (t->priority == priority) goto err; } @@ -52,13 +57,17 @@ EXPORT_SYMBOL(xfrm4_tunnel_register); int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family) { - struct xfrm_tunnel **pprev; + struct xfrm_tunnel __rcu **pprev; + struct xfrm_tunnel *t; int ret = -ENOENT; mutex_lock(&tunnel4_mutex); - for (pprev = fam_handlers(family); *pprev; pprev = &(*pprev)->next) { - if (*pprev == handler) { + for (pprev = fam_handlers(family); + (t = rcu_dereference_protected(*pprev, + lockdep_is_held(&tunnel4_mutex))) != NULL; + pprev = &t->next) { + if (t == handler) { *pprev = handler->next; ret = 0; break; -- cgit v1.2.3-70-g09d2 From 7a2b03c5175e9ddcc2a2d48ca86dea8a88b68383 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 26 Oct 2010 09:24:55 +0000 Subject: fib_rules: __rcu annotates ctarget Adds __rcu annotation to (struct fib_rule)->ctarget Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/fib_rules.h | 2 +- net/core/fib_rules.c | 11 ++++++----- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h index 106f3097d38..075f1e3a0fe 100644 --- a/include/net/fib_rules.h +++ b/include/net/fib_rules.h @@ -20,7 +20,7 @@ struct fib_rule { u32 table; u8 action; u32 target; - struct fib_rule * ctarget; + struct fib_rule __rcu *ctarget; char iifname[IFNAMSIZ]; char oifname[IFNAMSIZ]; struct rcu_head rcu; diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index 12b43cc2f88..82a4369ae15 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -351,12 +351,12 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) list_for_each_entry(r, &ops->rules_list, list) { if (r->pref == rule->target) { - rule->ctarget = r; + RCU_INIT_POINTER(rule->ctarget, r); break; } } - if (rule->ctarget == NULL) + if (rcu_dereference_protected(rule->ctarget, 1) == NULL) unresolved = 1; } else if (rule->action == FR_ACT_GOTO) goto errout_free; @@ -386,7 +386,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) list_for_each_entry(r, &ops->rules_list, list) { if (r->action == FR_ACT_GOTO && r->target == rule->pref) { - BUG_ON(r->ctarget != NULL); + BUG_ON(rtnl_dereference(r->ctarget) != NULL); rcu_assign_pointer(r->ctarget, rule); if (--ops->unresolved_rules == 0) break; @@ -487,7 +487,7 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) */ if (ops->nr_goto_rules > 0) { list_for_each_entry(tmp, &ops->rules_list, list) { - if (tmp->ctarget == rule) { + if (rtnl_dereference(tmp->ctarget) == rule) { rcu_assign_pointer(tmp->ctarget, NULL); ops->unresolved_rules++; } @@ -545,7 +545,8 @@ static int fib_nl_fill_rule(struct sk_buff *skb, struct fib_rule *rule, frh->action = rule->action; frh->flags = rule->flags; - if (rule->action == FR_ACT_GOTO && rule->ctarget == NULL) + if (rule->action == FR_ACT_GOTO && + rcu_dereference_raw(rule->ctarget) == NULL) frh->flags |= FIB_RULE_UNRESOLVED; if (rule->iifname[0]) { -- cgit v1.2.3-70-g09d2 From b914c4ea929a4ba6fb97967800dc473c31552b98 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 25 Oct 2010 23:55:38 +0000 Subject: inetpeer: __rcu annotations Adds __rcu annotations to inetpeer (struct inet_peer)->avl_left (struct inet_peer)->avl_right This is a tedious cleanup, but removes one smp_wmb() from link_to_pool() since we now use more self documenting rcu_assign_pointer(). Note the use of RCU_INIT_POINTER() instead of rcu_assign_pointer() in all cases we dont need a memory barrier. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/inetpeer.h | 2 +- net/ipv4/inetpeer.c | 138 ++++++++++++++++++++++++++++--------------------- 2 files changed, 81 insertions(+), 59 deletions(-) diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h index 417d0c894f2..fe239bfe5f7 100644 --- a/include/net/inetpeer.h +++ b/include/net/inetpeer.h @@ -15,7 +15,7 @@ struct inet_peer { /* group together avl_left,avl_right,v4daddr to speedup lookups */ - struct inet_peer *avl_left, *avl_right; + struct inet_peer __rcu *avl_left, *avl_right; __be32 v4daddr; /* peer's address */ __u32 avl_height; struct list_head unused; diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c index 9ffa24b9a80..9e94d7cf4f8 100644 --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -72,18 +72,19 @@ static struct kmem_cache *peer_cachep __read_mostly; #define node_height(x) x->avl_height #define peer_avl_empty ((struct inet_peer *)&peer_fake_node) +#define peer_avl_empty_rcu ((struct inet_peer __rcu __force *)&peer_fake_node) static const struct inet_peer peer_fake_node = { - .avl_left = peer_avl_empty, - .avl_right = peer_avl_empty, + .avl_left = peer_avl_empty_rcu, + .avl_right = peer_avl_empty_rcu, .avl_height = 0 }; static struct { - struct inet_peer *root; + struct inet_peer __rcu *root; spinlock_t lock; int total; } peers = { - .root = peer_avl_empty, + .root = peer_avl_empty_rcu, .lock = __SPIN_LOCK_UNLOCKED(peers.lock), .total = 0, }; @@ -156,11 +157,14 @@ static void unlink_from_unused(struct inet_peer *p) */ #define lookup(_daddr, _stack) \ ({ \ - struct inet_peer *u, **v; \ + struct inet_peer *u; \ + struct inet_peer __rcu **v; \ \ stackptr = _stack; \ *stackptr++ = &peers.root; \ - for (u = peers.root; u != peer_avl_empty; ) { \ + for (u = rcu_dereference_protected(peers.root, \ + lockdep_is_held(&peers.lock)); \ + u != peer_avl_empty; ) { \ if (_daddr == u->v4daddr) \ break; \ if ((__force __u32)_daddr < (__force __u32)u->v4daddr) \ @@ -168,7 +172,8 @@ static void unlink_from_unused(struct inet_peer *p) else \ v = &u->avl_right; \ *stackptr++ = v; \ - u = *v; \ + u = rcu_dereference_protected(*v, \ + lockdep_is_held(&peers.lock)); \ } \ u; \ }) @@ -209,13 +214,17 @@ static struct inet_peer *lookup_rcu_bh(__be32 daddr) /* Called with local BH disabled and the pool lock held. */ #define lookup_rightempty(start) \ ({ \ - struct inet_peer *u, **v; \ + struct inet_peer *u; \ + struct inet_peer __rcu **v; \ *stackptr++ = &start->avl_left; \ v = &start->avl_left; \ - for (u = *v; u->avl_right != peer_avl_empty; ) { \ + for (u = rcu_dereference_protected(*v, \ + lockdep_is_held(&peers.lock)); \ + u->avl_right != peer_avl_empty_rcu; ) { \ v = &u->avl_right; \ *stackptr++ = v; \ - u = *v; \ + u = rcu_dereference_protected(*v, \ + lockdep_is_held(&peers.lock)); \ } \ u; \ }) @@ -224,74 +233,86 @@ static struct inet_peer *lookup_rcu_bh(__be32 daddr) * Variable names are the proof of operation correctness. * Look into mm/map_avl.c for more detail description of the ideas. */ -static void peer_avl_rebalance(struct inet_peer **stack[], - struct inet_peer ***stackend) +static void peer_avl_rebalance(struct inet_peer __rcu **stack[], + struct inet_peer __rcu ***stackend) { - struct inet_peer **nodep, *node, *l, *r; + struct inet_peer __rcu **nodep; + struct inet_peer *node, *l, *r; int lh, rh; while (stackend > stack) { nodep = *--stackend; - node = *nodep; - l = node->avl_left; - r = node->avl_right; + node = rcu_dereference_protected(*nodep, + lockdep_is_held(&peers.lock)); + l = rcu_dereference_protected(node->avl_left, + lockdep_is_held(&peers.lock)); + r = rcu_dereference_protected(node->avl_right, + lockdep_is_held(&peers.lock)); lh = node_height(l); rh = node_height(r); if (lh > rh + 1) { /* l: RH+2 */ struct inet_peer *ll, *lr, *lrl, *lrr; int lrh; - ll = l->avl_left; - lr = l->avl_right; + ll = rcu_dereference_protected(l->avl_left, + lockdep_is_held(&peers.lock)); + lr = rcu_dereference_protected(l->avl_right, + lockdep_is_held(&peers.lock)); lrh = node_height(lr); if (lrh <= node_height(ll)) { /* ll: RH+1 */ - node->avl_left = lr; /* lr: RH or RH+1 */ - node->avl_right = r; /* r: RH */ + RCU_INIT_POINTER(node->avl_left, lr); /* lr: RH or RH+1 */ + RCU_INIT_POINTER(node->avl_right, r); /* r: RH */ node->avl_height = lrh + 1; /* RH+1 or RH+2 */ - l->avl_left = ll; /* ll: RH+1 */ - l->avl_right = node; /* node: RH+1 or RH+2 */ + RCU_INIT_POINTER(l->avl_left, ll); /* ll: RH+1 */ + RCU_INIT_POINTER(l->avl_right, node); /* node: RH+1 or RH+2 */ l->avl_height = node->avl_height + 1; - *nodep = l; + RCU_INIT_POINTER(*nodep, l); } else { /* ll: RH, lr: RH+1 */ - lrl = lr->avl_left; /* lrl: RH or RH-1 */ - lrr = lr->avl_right; /* lrr: RH or RH-1 */ - node->avl_left = lrr; /* lrr: RH or RH-1 */ - node->avl_right = r; /* r: RH */ + lrl = rcu_dereference_protected(lr->avl_left, + lockdep_is_held(&peers.lock)); /* lrl: RH or RH-1 */ + lrr = rcu_dereference_protected(lr->avl_right, + lockdep_is_held(&peers.lock)); /* lrr: RH or RH-1 */ + RCU_INIT_POINTER(node->avl_left, lrr); /* lrr: RH or RH-1 */ + RCU_INIT_POINTER(node->avl_right, r); /* r: RH */ node->avl_height = rh + 1; /* node: RH+1 */ - l->avl_left = ll; /* ll: RH */ - l->avl_right = lrl; /* lrl: RH or RH-1 */ + RCU_INIT_POINTER(l->avl_left, ll); /* ll: RH */ + RCU_INIT_POINTER(l->avl_right, lrl); /* lrl: RH or RH-1 */ l->avl_height = rh + 1; /* l: RH+1 */ - lr->avl_left = l; /* l: RH+1 */ - lr->avl_right = node; /* node: RH+1 */ + RCU_INIT_POINTER(lr->avl_left, l); /* l: RH+1 */ + RCU_INIT_POINTER(lr->avl_right, node); /* node: RH+1 */ lr->avl_height = rh + 2; - *nodep = lr; + RCU_INIT_POINTER(*nodep, lr); } } else if (rh > lh + 1) { /* r: LH+2 */ struct inet_peer *rr, *rl, *rlr, *rll; int rlh; - rr = r->avl_right; - rl = r->avl_left; + rr = rcu_dereference_protected(r->avl_right, + lockdep_is_held(&peers.lock)); + rl = rcu_dereference_protected(r->avl_left, + lockdep_is_held(&peers.lock)); rlh = node_height(rl); if (rlh <= node_height(rr)) { /* rr: LH+1 */ - node->avl_right = rl; /* rl: LH or LH+1 */ - node->avl_left = l; /* l: LH */ + RCU_INIT_POINTER(node->avl_right, rl); /* rl: LH or LH+1 */ + RCU_INIT_POINTER(node->avl_left, l); /* l: LH */ node->avl_height = rlh + 1; /* LH+1 or LH+2 */ - r->avl_right = rr; /* rr: LH+1 */ - r->avl_left = node; /* node: LH+1 or LH+2 */ + RCU_INIT_POINTER(r->avl_right, rr); /* rr: LH+1 */ + RCU_INIT_POINTER(r->avl_left, node); /* node: LH+1 or LH+2 */ r->avl_height = node->avl_height + 1; - *nodep = r; + RCU_INIT_POINTER(*nodep, r); } else { /* rr: RH, rl: RH+1 */ - rlr = rl->avl_right; /* rlr: LH or LH-1 */ - rll = rl->avl_left; /* rll: LH or LH-1 */ - node->avl_right = rll; /* rll: LH or LH-1 */ - node->avl_left = l; /* l: LH */ + rlr = rcu_dereference_protected(rl->avl_right, + lockdep_is_held(&peers.lock)); /* rlr: LH or LH-1 */ + rll = rcu_dereference_protected(rl->avl_left, + lockdep_is_held(&peers.lock)); /* rll: LH or LH-1 */ + RCU_INIT_POINTER(node->avl_right, rll); /* rll: LH or LH-1 */ + RCU_INIT_POINTER(node->avl_left, l); /* l: LH */ node->avl_height = lh + 1; /* node: LH+1 */ - r->avl_right = rr; /* rr: LH */ - r->avl_left = rlr; /* rlr: LH or LH-1 */ + RCU_INIT_POINTER(r->avl_right, rr); /* rr: LH */ + RCU_INIT_POINTER(r->avl_left, rlr); /* rlr: LH or LH-1 */ r->avl_height = lh + 1; /* r: LH+1 */ - rl->avl_right = r; /* r: LH+1 */ - rl->avl_left = node; /* node: LH+1 */ + RCU_INIT_POINTER(rl->avl_right, r); /* r: LH+1 */ + RCU_INIT_POINTER(rl->avl_left, node); /* node: LH+1 */ rl->avl_height = lh + 2; - *nodep = rl; + RCU_INIT_POINTER(*nodep, rl); } } else { node->avl_height = (lh > rh ? lh : rh) + 1; @@ -303,10 +324,10 @@ static void peer_avl_rebalance(struct inet_peer **stack[], #define link_to_pool(n) \ do { \ n->avl_height = 1; \ - n->avl_left = peer_avl_empty; \ - n->avl_right = peer_avl_empty; \ - smp_wmb(); /* lockless readers can catch us now */ \ - **--stackptr = n; \ + n->avl_left = peer_avl_empty_rcu; \ + n->avl_right = peer_avl_empty_rcu; \ + /* lockless readers can catch us now */ \ + rcu_assign_pointer(**--stackptr, n); \ peer_avl_rebalance(stack, stackptr); \ } while (0) @@ -330,24 +351,25 @@ static void unlink_from_pool(struct inet_peer *p) * We use refcnt=-1 to alert lockless readers this entry is deleted. */ if (atomic_cmpxchg(&p->refcnt, 1, -1) == 1) { - struct inet_peer **stack[PEER_MAXDEPTH]; - struct inet_peer ***stackptr, ***delp; + struct inet_peer __rcu **stack[PEER_MAXDEPTH]; + struct inet_peer __rcu ***stackptr, ***delp; if (lookup(p->v4daddr, stack) != p) BUG(); delp = stackptr - 1; /* *delp[0] == p */ - if (p->avl_left == peer_avl_empty) { + if (p->avl_left == peer_avl_empty_rcu) { *delp[0] = p->avl_right; --stackptr; } else { /* look for a node to insert instead of p */ struct inet_peer *t; t = lookup_rightempty(p); - BUG_ON(*stackptr[-1] != t); + BUG_ON(rcu_dereference_protected(*stackptr[-1], + lockdep_is_held(&peers.lock)) != t); **--stackptr = t->avl_left; /* t is removed, t->v4daddr > x->v4daddr for any * x in p->avl_left subtree. * Put t in the old place of p. */ - *delp[0] = t; + RCU_INIT_POINTER(*delp[0], t); t->avl_left = p->avl_left; t->avl_right = p->avl_right; t->avl_height = p->avl_height; @@ -414,7 +436,7 @@ static int cleanup_once(unsigned long ttl) struct inet_peer *inet_getpeer(__be32 daddr, int create) { struct inet_peer *p; - struct inet_peer **stack[PEER_MAXDEPTH], ***stackptr; + struct inet_peer __rcu **stack[PEER_MAXDEPTH], ***stackptr; /* Look up for the address quickly, lockless. * Because of a concurrent writer, we might not find an existing entry. -- cgit v1.2.3-70-g09d2 From e5ccd96110d5ac0f73b695ba606feb6d69472f26 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 26 Oct 2010 19:21:07 +0000 Subject: ehea: fix use after free ehea_start_xmit() dereferences skb after its freeing in ehea_xmit3() to get vlan tags. Move the offending block before the potential ehea_xmit3() call. Signed-off-by: Eric Dumazet Signed-off-by: Breno Leitao Signed-off-by: David S. Miller --- drivers/net/ehea/ehea_main.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index bb7d306fb44..e59d3862909 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -2249,6 +2249,11 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) memset(swqe, 0, SWQE_HEADER_SIZE); atomic_dec(&pr->swqe_avail); + if (vlan_tx_tag_present(skb)) { + swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; + swqe->vlan_tag = vlan_tx_tag_get(skb); + } + if (skb->len <= SWQE3_MAX_IMM) { u32 sig_iv = port->sig_comp_iv; u32 swqe_num = pr->swqe_id_counter; @@ -2279,11 +2284,6 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) } pr->swqe_id_counter += 1; - if (vlan_tx_tag_present(skb)) { - swqe->tx_control |= EHEA_SWQE_VLAN_INSERT; - swqe->vlan_tag = vlan_tx_tag_get(skb); - } - if (netif_msg_tx_queued(port)) { ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr); ehea_dump(swqe, 512, "swqe"); -- cgit v1.2.3-70-g09d2 From e5edb7b19fd207f78adfdf4d9d5e1dd74a7eabd3 Mon Sep 17 00:00:00 2001 From: amit salecha Date: Tue, 26 Oct 2010 17:53:07 +0000 Subject: qlcnic: fix mac learning In failover bonding case, same mac address can be programmed on other slave function. Fw will delete old entry (original func) associated with that mac address. Need to reporgram mac address, if failover again happen to original function. Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/qlcnic/qlcnic.h | 1 + drivers/net/qlcnic/qlcnic_main.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h index 26c37d3a586..a60ff17eafd 100644 --- a/drivers/net/qlcnic/qlcnic.h +++ b/drivers/net/qlcnic/qlcnic.h @@ -942,6 +942,7 @@ struct qlcnic_ipaddr { #define QLCNIC_LOOPBACK_TEST 2 #define QLCNIC_FILTER_AGE 80 +#define QLCNIC_READD_AGE 20 #define QLCNIC_LB_MAX_FILTERS 64 struct qlcnic_filter { diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c index f047c7c4831..5a3ce084c39 100644 --- a/drivers/net/qlcnic/qlcnic_main.c +++ b/drivers/net/qlcnic/qlcnic_main.c @@ -1860,6 +1860,11 @@ qlcnic_send_filter(struct qlcnic_adapter *adapter, hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) { if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) && tmp_fil->vlan_id == vlan_id) { + + if (jiffies > + (QLCNIC_READD_AGE * HZ + tmp_fil->ftime)) + qlcnic_change_filter(adapter, src_addr, vlan_id, + tx_ring); tmp_fil->ftime = jiffies; return; } -- cgit v1.2.3-70-g09d2 From 90d190055589b35986c2ff3f56e2f47613b9a67f Mon Sep 17 00:00:00 2001 From: Sony Chacko Date: Tue, 26 Oct 2010 17:53:08 +0000 Subject: qlcnic: reduce rx ring size If eswitch is enabled, rcv ring size can be reduce, as physical port is partition-ed. Signed-off-by: Sony Chacko Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/qlcnic/qlcnic.h | 4 ++++ drivers/net/qlcnic/qlcnic_ethtool.c | 23 +++++------------------ drivers/net/qlcnic/qlcnic_main.c | 14 ++++++++++++-- 3 files changed, 21 insertions(+), 20 deletions(-) diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h index a60ff17eafd..6400e6a6d7e 100644 --- a/drivers/net/qlcnic/qlcnic.h +++ b/drivers/net/qlcnic/qlcnic.h @@ -146,11 +146,13 @@ #define MAX_CMD_DESCRIPTORS 1024 #define MAX_RCV_DESCRIPTORS_1G 4096 #define MAX_RCV_DESCRIPTORS_10G 8192 +#define MAX_RCV_DESCRIPTORS_VF 2048 #define MAX_JUMBO_RCV_DESCRIPTORS_1G 512 #define MAX_JUMBO_RCV_DESCRIPTORS_10G 1024 #define DEFAULT_RCV_DESCRIPTORS_1G 2048 #define DEFAULT_RCV_DESCRIPTORS_10G 4096 +#define DEFAULT_RCV_DESCRIPTORS_VF 1024 #define MAX_RDS_RINGS 2 #define get_next_index(index, length) \ @@ -971,6 +973,8 @@ struct qlcnic_adapter { u16 num_txd; u16 num_rxd; u16 num_jumbo_rxd; + u16 max_rxd; + u16 max_jumbo_rxd; u8 max_rds_rings; u8 max_sds_rings; diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c index 25e93a53fca..ec21d24015c 100644 --- a/drivers/net/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/qlcnic/qlcnic_ethtool.c @@ -437,14 +437,8 @@ qlcnic_get_ringparam(struct net_device *dev, ring->rx_jumbo_pending = adapter->num_jumbo_rxd; ring->tx_pending = adapter->num_txd; - if (adapter->ahw.port_type == QLCNIC_GBE) { - ring->rx_max_pending = MAX_RCV_DESCRIPTORS_1G; - ring->rx_jumbo_max_pending = MAX_JUMBO_RCV_DESCRIPTORS_1G; - } else { - ring->rx_max_pending = MAX_RCV_DESCRIPTORS_10G; - ring->rx_jumbo_max_pending = MAX_JUMBO_RCV_DESCRIPTORS_10G; - } - + ring->rx_max_pending = adapter->max_rxd; + ring->rx_jumbo_max_pending = adapter->max_jumbo_rxd; ring->tx_max_pending = MAX_CMD_DESCRIPTORS; ring->rx_mini_max_pending = 0; @@ -472,24 +466,17 @@ qlcnic_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring) { struct qlcnic_adapter *adapter = netdev_priv(dev); - u16 max_rcv_desc = MAX_RCV_DESCRIPTORS_10G; - u16 max_jumbo_desc = MAX_JUMBO_RCV_DESCRIPTORS_10G; u16 num_rxd, num_jumbo_rxd, num_txd; - if (ring->rx_mini_pending) return -EOPNOTSUPP; - if (adapter->ahw.port_type == QLCNIC_GBE) { - max_rcv_desc = MAX_RCV_DESCRIPTORS_1G; - max_jumbo_desc = MAX_JUMBO_RCV_DESCRIPTORS_10G; - } - num_rxd = qlcnic_validate_ringparam(ring->rx_pending, - MIN_RCV_DESCRIPTORS, max_rcv_desc, "rx"); + MIN_RCV_DESCRIPTORS, adapter->max_rxd, "rx"); num_jumbo_rxd = qlcnic_validate_ringparam(ring->rx_jumbo_pending, - MIN_JUMBO_DESCRIPTORS, max_jumbo_desc, "rx jumbo"); + MIN_JUMBO_DESCRIPTORS, adapter->max_jumbo_rxd, + "rx jumbo"); num_txd = qlcnic_validate_ringparam(ring->tx_pending, MIN_CMD_DESCRIPTORS, MAX_CMD_DESCRIPTORS, "tx"); diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c index 5a3ce084c39..7a298cdf9ab 100644 --- a/drivers/net/qlcnic/qlcnic_main.c +++ b/drivers/net/qlcnic/qlcnic_main.c @@ -656,13 +656,23 @@ qlcnic_check_options(struct qlcnic_adapter *adapter) dev_info(&pdev->dev, "firmware v%d.%d.%d\n", fw_major, fw_minor, fw_build); - if (adapter->ahw.port_type == QLCNIC_XGBE) { - adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G; + if (adapter->flags & QLCNIC_ESWITCH_ENABLED) { + adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_VF; + adapter->max_rxd = MAX_RCV_DESCRIPTORS_VF; + } else { + adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G; + adapter->max_rxd = MAX_RCV_DESCRIPTORS_10G; + } + adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G; + adapter->max_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G; + } else if (adapter->ahw.port_type == QLCNIC_GBE) { adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G; adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G; + adapter->max_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G; + adapter->max_rxd = MAX_RCV_DESCRIPTORS_1G; } adapter->msix_supported = !!use_msi_x; -- cgit v1.2.3-70-g09d2 From 0184bbba1cb535dec2eaacacabe188964fbddd7c Mon Sep 17 00:00:00 2001 From: Sony Chacko Date: Tue, 26 Oct 2010 17:53:09 +0000 Subject: qlcnic: define valid vlan id range 4095 vlan id is reserved and should not be use. Signed-off-by: Sony Chacko Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/qlcnic/qlcnic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h index 6400e6a6d7e..8ecc170c9b7 100644 --- a/drivers/net/qlcnic/qlcnic.h +++ b/drivers/net/qlcnic/qlcnic.h @@ -1134,7 +1134,7 @@ struct qlcnic_eswitch { #define MAX_RX_QUEUES 4 #define DEFAULT_MAC_LEARN 1 -#define IS_VALID_VLAN(vlan) (vlan >= MIN_VLAN_ID && vlan <= MAX_VLAN_ID) +#define IS_VALID_VLAN(vlan) (vlan >= MIN_VLAN_ID && vlan < MAX_VLAN_ID) #define IS_VALID_BW(bw) (bw >= MIN_BW && bw <= MAX_BW) #define IS_VALID_TX_QUEUES(que) (que > 0 && que <= MAX_TX_QUEUES) #define IS_VALID_RX_QUEUES(que) (que > 0 && que <= MAX_RX_QUEUES) -- cgit v1.2.3-70-g09d2 From d58c0e95622c0de271ae57c083ad25ff4eb032c8 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 26 Oct 2010 00:25:34 +0000 Subject: drivers/net/sb1000.c: delete double assignment The other code around these duplicated assignments initializes the 0 1 2 and 3 elements of an array, so change the initialization of the rx_session_id array to do the same. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression i; @@ *i = ...; i = ...; // Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- drivers/net/sb1000.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/sb1000.c b/drivers/net/sb1000.c index a9ae505e1ba..66c2f1a0196 100644 --- a/drivers/net/sb1000.c +++ b/drivers/net/sb1000.c @@ -961,9 +961,9 @@ sb1000_open(struct net_device *dev) lp->rx_error_count = 0; lp->rx_error_dpc_count = 0; lp->rx_session_id[0] = 0x50; - lp->rx_session_id[0] = 0x48; - lp->rx_session_id[0] = 0x44; - lp->rx_session_id[0] = 0x42; + lp->rx_session_id[1] = 0x48; + lp->rx_session_id[2] = 0x44; + lp->rx_session_id[3] = 0x42; lp->rx_frame_id[0] = 0; lp->rx_frame_id[1] = 0; lp->rx_frame_id[2] = 0; -- cgit v1.2.3-70-g09d2 From 13c3ab86f27967488b8182a173ebc899c9111bf0 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 26 Oct 2010 00:25:36 +0000 Subject: drivers/net/typhoon.c: delete double assignment Delete successive assignments to the same location. The current definition does not initialize the respRing structure, which has the same type as the cmdRing structure, so initialize that one instead. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression i; @@ *i = ...; i = ...; // Signed-off-by: Julia Lawall Acked-by: David Dillow Signed-off-by: David S. Miller --- drivers/net/typhoon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c index b550da008a0..5b83c3f35f4 100644 --- a/drivers/net/typhoon.c +++ b/drivers/net/typhoon.c @@ -1300,7 +1300,7 @@ typhoon_init_rings(struct typhoon *tp) tp->rxHiRing.lastWrite = 0; tp->rxBuffRing.lastWrite = 0; tp->cmdRing.lastWrite = 0; - tp->cmdRing.lastWrite = 0; + tp->respRing.lastWrite = 0; tp->txLoRing.lastRead = 0; tp->txHiRing.lastRead = 0; -- cgit v1.2.3-70-g09d2 From 4101e976e0376a1820ae55adf8bca7dda5089a7d Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 26 Oct 2010 02:20:56 +0000 Subject: drivers/isdn: delete double assignment Delete successive assignments to the same location. In the first case, the hscx array has two elements, so change the assignment to initialize the second one. In the second case, the two assignments are simply identical. Furthermore, neither is necessary, because the effect of the assignment is only visible in the next line, in the assignment in the if test. The patch inlines the right hand side value in the latter assignment and pulls that assignment out of the if test. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression i; @@ *i = ...; i = ...; // Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- drivers/isdn/hardware/mISDN/mISDNinfineon.c | 2 +- drivers/isdn/hisax/l3_1tr6.c | 6 ++---- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/isdn/hardware/mISDN/mISDNinfineon.c b/drivers/isdn/hardware/mISDN/mISDNinfineon.c index af25e1f3efd..e90db8870b6 100644 --- a/drivers/isdn/hardware/mISDN/mISDNinfineon.c +++ b/drivers/isdn/hardware/mISDN/mISDNinfineon.c @@ -563,7 +563,7 @@ reset_inf(struct inf_hw *hw) mdelay(10); hw->ipac.isac.adf2 = 0x87; hw->ipac.hscx[0].slot = 0x1f; - hw->ipac.hscx[0].slot = 0x23; + hw->ipac.hscx[1].slot = 0x23; break; case INF_GAZEL_R753: val = inl((u32)hw->cfg.start + GAZEL_CNTRL); diff --git a/drivers/isdn/hisax/l3_1tr6.c b/drivers/isdn/hisax/l3_1tr6.c index b0554f80bfb..ee4dae1382e 100644 --- a/drivers/isdn/hisax/l3_1tr6.c +++ b/drivers/isdn/hisax/l3_1tr6.c @@ -164,11 +164,9 @@ l3_1tr6_setup(struct l3_process *pc, u_char pr, void *arg) char tmp[80]; struct sk_buff *skb = arg; - p = skb->data; - /* Channel Identification */ - p = skb->data; - if ((p = findie(p, skb->len, WE0_chanID, 0))) { + p = findie(skb->data, skb->len, WE0_chanID, 0); + if (p) { if (p[1] != 1) { l3_1tr6_error(pc, "setup wrong chanID len", skb); return; -- cgit v1.2.3-70-g09d2 From a10c02036f82b1fa30d69a62f7c7d9a927e8adbc Mon Sep 17 00:00:00 2001 From: Amarnath Revanna Date: Wed, 27 Oct 2010 08:34:39 +0000 Subject: caif-u5500: Adding shared memory include Signed-off-by: Sjur Braendeland Signed-off-by: David S. Miller --- include/net/caif/caif_shm.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 include/net/caif/caif_shm.h diff --git a/include/net/caif/caif_shm.h b/include/net/caif/caif_shm.h new file mode 100644 index 00000000000..5bcce55438c --- /dev/null +++ b/include/net/caif/caif_shm.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) ST-Ericsson AB 2010 + * Contact: Sjur Brendeland / sjur.brandeland@stericsson.com + * Author: Amarnath Revanna / amarnath.bangalore.revanna@stericsson.com + * License terms: GNU General Public License (GPL) version 2 + */ + +#ifndef CAIF_SHM_H_ +#define CAIF_SHM_H_ + +struct shmdev_layer { + u32 shm_base_addr; + u32 shm_total_sz; + u32 shm_id; + u32 shm_loopback; + void *hmbx; + int (*pshmdev_mbxsend) (u32 shm_id, u32 mbx_msg); + int (*pshmdev_mbxsetup) (void *pshmdrv_cb, + struct shmdev_layer *pshm_dev, void *pshm_drv); + struct net_device *pshm_netdev; +}; + +extern int caif_shmcore_probe(struct shmdev_layer *pshm_dev); +extern void caif_shmcore_remove(struct net_device *pshm_netdev); + +#endif -- cgit v1.2.3-70-g09d2 From dfae55d6a5873718fe0d996fc929519073a85ff7 Mon Sep 17 00:00:00 2001 From: "sjur.brandeland@stericsson.com" Date: Wed, 27 Oct 2010 08:34:40 +0000 Subject: caif-u5500: CAIF shared memory transport protocol Signed-off-by: Sjur Braendeland Signed-off-by: David S. Miller --- drivers/net/caif/caif_shmcore.c | 744 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 744 insertions(+) create mode 100644 drivers/net/caif/caif_shmcore.c diff --git a/drivers/net/caif/caif_shmcore.c b/drivers/net/caif/caif_shmcore.c new file mode 100644 index 00000000000..19f9c065666 --- /dev/null +++ b/drivers/net/caif/caif_shmcore.c @@ -0,0 +1,744 @@ +/* + * Copyright (C) ST-Ericsson AB 2010 + * Contact: Sjur Brendeland / sjur.brandeland@stericsson.com + * Authors: Amarnath Revanna / amarnath.bangalore.revanna@stericsson.com, + * Daniel Martensson / daniel.martensson@stericsson.com + * License terms: GNU General Public License (GPL) version 2 + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ":" __func__ "():" fmt + +#include +#include +#include +#include +#include + +#include +#include + +#define NR_TX_BUF 6 +#define NR_RX_BUF 6 +#define TX_BUF_SZ 0x2000 +#define RX_BUF_SZ 0x2000 + +#define CAIF_NEEDED_HEADROOM 32 + +#define CAIF_FLOW_ON 1 +#define CAIF_FLOW_OFF 0 + +#define LOW_WATERMARK 3 +#define HIGH_WATERMARK 4 + +/* Maximum number of CAIF buffers per shared memory buffer. */ +#define SHM_MAX_FRMS_PER_BUF 10 + +/* + * Size in bytes of the descriptor area + * (With end of descriptor signalling) + */ +#define SHM_CAIF_DESC_SIZE ((SHM_MAX_FRMS_PER_BUF + 1) * \ + sizeof(struct shm_pck_desc)) + +/* + * Offset to the first CAIF frame within a shared memory buffer. + * Aligned on 32 bytes. + */ +#define SHM_CAIF_FRM_OFS (SHM_CAIF_DESC_SIZE + (SHM_CAIF_DESC_SIZE % 32)) + +/* Number of bytes for CAIF shared memory header. */ +#define SHM_HDR_LEN 1 + +/* Number of padding bytes for the complete CAIF frame. */ +#define SHM_FRM_PAD_LEN 4 + +#define CAIF_MAX_MTU 4096 + +#define SHM_SET_FULL(x) (((x+1) & 0x0F) << 0) +#define SHM_GET_FULL(x) (((x >> 0) & 0x0F) - 1) + +#define SHM_SET_EMPTY(x) (((x+1) & 0x0F) << 4) +#define SHM_GET_EMPTY(x) (((x >> 4) & 0x0F) - 1) + +#define SHM_FULL_MASK (0x0F << 0) +#define SHM_EMPTY_MASK (0x0F << 4) + +struct shm_pck_desc { + /* + * Offset from start of shared memory area to start of + * shared memory CAIF frame. + */ + u32 frm_ofs; + u32 frm_len; +}; + +struct buf_list { + unsigned char *desc_vptr; + u32 phy_addr; + u32 index; + u32 len; + u32 frames; + u32 frm_ofs; + struct list_head list; +}; + +struct shm_caif_frm { + /* Number of bytes of padding before the CAIF frame. */ + u8 hdr_ofs; +}; + +struct shmdrv_layer { + /* caif_dev_common must always be first in the structure*/ + struct caif_dev_common cfdev; + + u32 shm_tx_addr; + u32 shm_rx_addr; + u32 shm_base_addr; + u32 tx_empty_available; + spinlock_t lock; + + struct list_head tx_empty_list; + struct list_head tx_pend_list; + struct list_head tx_full_list; + struct list_head rx_empty_list; + struct list_head rx_pend_list; + struct list_head rx_full_list; + + struct workqueue_struct *pshm_tx_workqueue; + struct workqueue_struct *pshm_rx_workqueue; + + struct work_struct shm_tx_work; + struct work_struct shm_rx_work; + + struct sk_buff_head sk_qhead; + struct shmdev_layer *pshm_dev; +}; + +static int shm_netdev_open(struct net_device *shm_netdev) +{ + netif_wake_queue(shm_netdev); + return 0; +} + +static int shm_netdev_close(struct net_device *shm_netdev) +{ + netif_stop_queue(shm_netdev); + return 0; +} + +int caif_shmdrv_rx_cb(u32 mbx_msg, void *priv) +{ + struct buf_list *pbuf; + struct shmdrv_layer *pshm_drv; + struct list_head *pos; + u32 avail_emptybuff = 0; + unsigned long flags = 0; + + pshm_drv = (struct shmdrv_layer *)priv; + + /* Check for received buffers. */ + if (mbx_msg & SHM_FULL_MASK) { + int idx; + + spin_lock_irqsave(&pshm_drv->lock, flags); + + /* Check whether we have any outstanding buffers. */ + if (list_empty(&pshm_drv->rx_empty_list)) { + + /* Release spin lock. */ + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* We print even in IRQ context... */ + pr_warn("No empty Rx buffers to fill: " + "mbx_msg:%x\n", mbx_msg); + + /* Bail out. */ + goto err_sync; + } + + pbuf = + list_entry(pshm_drv->rx_empty_list.next, + struct buf_list, list); + idx = pbuf->index; + + /* Check buffer synchronization. */ + if (idx != SHM_GET_FULL(mbx_msg)) { + + /* We print even in IRQ context... */ + pr_warn( + "phyif_shm_mbx_msg_cb: RX full out of sync:" + " idx:%d, msg:%x SHM_GET_FULL(mbx_msg):%x\n", + idx, mbx_msg, SHM_GET_FULL(mbx_msg)); + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* Bail out. */ + goto err_sync; + } + + list_del_init(&pbuf->list); + list_add_tail(&pbuf->list, &pshm_drv->rx_full_list); + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* Schedule RX work queue. */ + if (!work_pending(&pshm_drv->shm_rx_work)) + queue_work(pshm_drv->pshm_rx_workqueue, + &pshm_drv->shm_rx_work); + } + + /* Check for emptied buffers. */ + if (mbx_msg & SHM_EMPTY_MASK) { + int idx; + + spin_lock_irqsave(&pshm_drv->lock, flags); + + /* Check whether we have any outstanding buffers. */ + if (list_empty(&pshm_drv->tx_full_list)) { + + /* We print even in IRQ context... */ + pr_warn("No TX to empty: msg:%x\n", mbx_msg); + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* Bail out. */ + goto err_sync; + } + + pbuf = + list_entry(pshm_drv->tx_full_list.next, + struct buf_list, list); + idx = pbuf->index; + + /* Check buffer synchronization. */ + if (idx != SHM_GET_EMPTY(mbx_msg)) { + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* We print even in IRQ context... */ + pr_warn("TX empty " + "out of sync:idx:%d, msg:%x\n", idx, mbx_msg); + + /* Bail out. */ + goto err_sync; + } + list_del_init(&pbuf->list); + + /* Reset buffer parameters. */ + pbuf->frames = 0; + pbuf->frm_ofs = SHM_CAIF_FRM_OFS; + + list_add_tail(&pbuf->list, &pshm_drv->tx_empty_list); + + /* Check the available no. of buffers in the empty list */ + list_for_each(pos, &pshm_drv->tx_empty_list) + avail_emptybuff++; + + /* Check whether we have to wake up the transmitter. */ + if ((avail_emptybuff > HIGH_WATERMARK) && + (!pshm_drv->tx_empty_available)) { + pshm_drv->tx_empty_available = 1; + pshm_drv->cfdev.flowctrl + (pshm_drv->pshm_dev->pshm_netdev, + CAIF_FLOW_ON); + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* Schedule the work queue. if required */ + if (!work_pending(&pshm_drv->shm_tx_work)) + queue_work(pshm_drv->pshm_tx_workqueue, + &pshm_drv->shm_tx_work); + } else + spin_unlock_irqrestore(&pshm_drv->lock, flags); + } + + return 0; + +err_sync: + return -EIO; +} + +static void shm_rx_work_func(struct work_struct *rx_work) +{ + struct shmdrv_layer *pshm_drv; + struct buf_list *pbuf; + unsigned long flags = 0; + struct sk_buff *skb; + char *p; + int ret; + + pshm_drv = container_of(rx_work, struct shmdrv_layer, shm_rx_work); + + while (1) { + + struct shm_pck_desc *pck_desc; + + spin_lock_irqsave(&pshm_drv->lock, flags); + + /* Check for received buffers. */ + if (list_empty(&pshm_drv->rx_full_list)) { + spin_unlock_irqrestore(&pshm_drv->lock, flags); + break; + } + + pbuf = + list_entry(pshm_drv->rx_full_list.next, struct buf_list, + list); + list_del_init(&pbuf->list); + + /* Retrieve pointer to start of the packet descriptor area. */ + pck_desc = (struct shm_pck_desc *) pbuf->desc_vptr; + + /* + * Check whether descriptor contains a CAIF shared memory + * frame. + */ + while (pck_desc->frm_ofs) { + unsigned int frm_buf_ofs; + unsigned int frm_pck_ofs; + unsigned int frm_pck_len; + /* + * Check whether offset is within buffer limits + * (lower). + */ + if (pck_desc->frm_ofs < + (pbuf->phy_addr - pshm_drv->shm_base_addr)) + break; + /* + * Check whether offset is within buffer limits + * (higher). + */ + if (pck_desc->frm_ofs > + ((pbuf->phy_addr - pshm_drv->shm_base_addr) + + pbuf->len)) + break; + + /* Calculate offset from start of buffer. */ + frm_buf_ofs = + pck_desc->frm_ofs - (pbuf->phy_addr - + pshm_drv->shm_base_addr); + + /* + * Calculate offset and length of CAIF packet while + * taking care of the shared memory header. + */ + frm_pck_ofs = + frm_buf_ofs + SHM_HDR_LEN + + (*(pbuf->desc_vptr + frm_buf_ofs)); + frm_pck_len = + (pck_desc->frm_len - SHM_HDR_LEN - + (*(pbuf->desc_vptr + frm_buf_ofs))); + + /* Check whether CAIF packet is within buffer limits */ + if ((frm_pck_ofs + pck_desc->frm_len) > pbuf->len) + break; + + /* Get a suitable CAIF packet and copy in data. */ + skb = netdev_alloc_skb(pshm_drv->pshm_dev->pshm_netdev, + frm_pck_len + 1); + BUG_ON(skb == NULL); + + p = skb_put(skb, frm_pck_len); + memcpy(p, pbuf->desc_vptr + frm_pck_ofs, frm_pck_len); + + skb->protocol = htons(ETH_P_CAIF); + skb_reset_mac_header(skb); + skb->dev = pshm_drv->pshm_dev->pshm_netdev; + + /* Push received packet up the stack. */ + ret = netif_rx_ni(skb); + + if (!ret) { + pshm_drv->pshm_dev->pshm_netdev->stats. + rx_packets++; + pshm_drv->pshm_dev->pshm_netdev->stats. + rx_bytes += pck_desc->frm_len; + } else + ++pshm_drv->pshm_dev->pshm_netdev->stats. + rx_dropped; + /* Move to next packet descriptor. */ + pck_desc++; + } + + list_add_tail(&pbuf->list, &pshm_drv->rx_pend_list); + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + } + + /* Schedule the work queue. if required */ + if (!work_pending(&pshm_drv->shm_tx_work)) + queue_work(pshm_drv->pshm_tx_workqueue, &pshm_drv->shm_tx_work); + +} + +static void shm_tx_work_func(struct work_struct *tx_work) +{ + u32 mbox_msg; + unsigned int frmlen, avail_emptybuff, append = 0; + unsigned long flags = 0; + struct buf_list *pbuf = NULL; + struct shmdrv_layer *pshm_drv; + struct shm_caif_frm *frm; + struct sk_buff *skb; + struct shm_pck_desc *pck_desc; + struct list_head *pos; + + pshm_drv = container_of(tx_work, struct shmdrv_layer, shm_tx_work); + + do { + /* Initialize mailbox message. */ + mbox_msg = 0x00; + avail_emptybuff = 0; + + spin_lock_irqsave(&pshm_drv->lock, flags); + + /* Check for pending receive buffers. */ + if (!list_empty(&pshm_drv->rx_pend_list)) { + + pbuf = list_entry(pshm_drv->rx_pend_list.next, + struct buf_list, list); + + list_del_init(&pbuf->list); + list_add_tail(&pbuf->list, &pshm_drv->rx_empty_list); + /* + * Value index is never changed, + * so read access should be safe. + */ + mbox_msg |= SHM_SET_EMPTY(pbuf->index); + } + + skb = skb_peek(&pshm_drv->sk_qhead); + + if (skb == NULL) + goto send_msg; + + /* Check the available no. of buffers in the empty list */ + list_for_each(pos, &pshm_drv->tx_empty_list) + avail_emptybuff++; + + if ((avail_emptybuff < LOW_WATERMARK) && + pshm_drv->tx_empty_available) { + /* Update blocking condition. */ + pshm_drv->tx_empty_available = 0; + pshm_drv->cfdev.flowctrl + (pshm_drv->pshm_dev->pshm_netdev, + CAIF_FLOW_OFF); + } + /* + * We simply return back to the caller if we do not have space + * either in Tx pending list or Tx empty list. In this case, + * we hold the received skb in the skb list, waiting to + * be transmitted once Tx buffers become available + */ + if (list_empty(&pshm_drv->tx_empty_list)) + goto send_msg; + + /* Get the first free Tx buffer. */ + pbuf = list_entry(pshm_drv->tx_empty_list.next, + struct buf_list, list); + do { + if (append) { + skb = skb_peek(&pshm_drv->sk_qhead); + if (skb == NULL) + break; + } + + frm = (struct shm_caif_frm *) + (pbuf->desc_vptr + pbuf->frm_ofs); + + frm->hdr_ofs = 0; + frmlen = 0; + frmlen += SHM_HDR_LEN + frm->hdr_ofs + skb->len; + + /* Add tail padding if needed. */ + if (frmlen % SHM_FRM_PAD_LEN) + frmlen += SHM_FRM_PAD_LEN - + (frmlen % SHM_FRM_PAD_LEN); + + /* + * Verify that packet, header and additional padding + * can fit within the buffer frame area. + */ + if (frmlen >= (pbuf->len - pbuf->frm_ofs)) + break; + + if (!append) { + list_del_init(&pbuf->list); + append = 1; + } + + skb = skb_dequeue(&pshm_drv->sk_qhead); + /* Copy in CAIF frame. */ + skb_copy_bits(skb, 0, pbuf->desc_vptr + + pbuf->frm_ofs + SHM_HDR_LEN + + frm->hdr_ofs, skb->len); + + pshm_drv->pshm_dev->pshm_netdev->stats.tx_packets++; + pshm_drv->pshm_dev->pshm_netdev->stats.tx_bytes += + frmlen; + dev_kfree_skb(skb); + + /* Fill in the shared memory packet descriptor area. */ + pck_desc = (struct shm_pck_desc *) (pbuf->desc_vptr); + /* Forward to current frame. */ + pck_desc += pbuf->frames; + pck_desc->frm_ofs = (pbuf->phy_addr - + pshm_drv->shm_base_addr) + + pbuf->frm_ofs; + pck_desc->frm_len = frmlen; + /* Terminate packet descriptor area. */ + pck_desc++; + pck_desc->frm_ofs = 0; + /* Update buffer parameters. */ + pbuf->frames++; + pbuf->frm_ofs += frmlen + (frmlen % 32); + + } while (pbuf->frames < SHM_MAX_FRMS_PER_BUF); + + /* Assign buffer as full. */ + list_add_tail(&pbuf->list, &pshm_drv->tx_full_list); + append = 0; + mbox_msg |= SHM_SET_FULL(pbuf->index); +send_msg: + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + if (mbox_msg) + pshm_drv->pshm_dev->pshmdev_mbxsend + (pshm_drv->pshm_dev->shm_id, mbox_msg); + } while (mbox_msg); +} + +static int shm_netdev_tx(struct sk_buff *skb, struct net_device *shm_netdev) +{ + struct shmdrv_layer *pshm_drv; + unsigned long flags = 0; + + pshm_drv = netdev_priv(shm_netdev); + + spin_lock_irqsave(&pshm_drv->lock, flags); + + skb_queue_tail(&pshm_drv->sk_qhead, skb); + + spin_unlock_irqrestore(&pshm_drv->lock, flags); + + /* Schedule Tx work queue. for deferred processing of skbs*/ + if (!work_pending(&pshm_drv->shm_tx_work)) + queue_work(pshm_drv->pshm_tx_workqueue, &pshm_drv->shm_tx_work); + + return 0; +} + +static const struct net_device_ops netdev_ops = { + .ndo_open = shm_netdev_open, + .ndo_stop = shm_netdev_close, + .ndo_start_xmit = shm_netdev_tx, +}; + +static void shm_netdev_setup(struct net_device *pshm_netdev) +{ + struct shmdrv_layer *pshm_drv; + pshm_netdev->netdev_ops = &netdev_ops; + + pshm_netdev->mtu = CAIF_MAX_MTU; + pshm_netdev->type = ARPHRD_CAIF; + pshm_netdev->hard_header_len = CAIF_NEEDED_HEADROOM; + pshm_netdev->tx_queue_len = 0; + pshm_netdev->destructor = free_netdev; + + pshm_drv = netdev_priv(pshm_netdev); + + /* Initialize structures in a clean state. */ + memset(pshm_drv, 0, sizeof(struct shmdrv_layer)); + + pshm_drv->cfdev.link_select = CAIF_LINK_LOW_LATENCY; +} + +int caif_shmcore_probe(struct shmdev_layer *pshm_dev) +{ + int result, j; + struct shmdrv_layer *pshm_drv = NULL; + + pshm_dev->pshm_netdev = alloc_netdev(sizeof(struct shmdrv_layer), + "cfshm%d", shm_netdev_setup); + if (!pshm_dev->pshm_netdev) + return -ENOMEM; + + pshm_drv = netdev_priv(pshm_dev->pshm_netdev); + pshm_drv->pshm_dev = pshm_dev; + + /* + * Initialization starts with the verification of the + * availability of MBX driver by calling its setup function. + * MBX driver must be available by this time for proper + * functioning of SHM driver. + */ + if ((pshm_dev->pshmdev_mbxsetup + (caif_shmdrv_rx_cb, pshm_dev, pshm_drv)) != 0) { + pr_warn("Could not config. SHM Mailbox," + " Bailing out.....\n"); + free_netdev(pshm_dev->pshm_netdev); + return -ENODEV; + } + + skb_queue_head_init(&pshm_drv->sk_qhead); + + pr_info("SHM DEVICE[%d] PROBED BY DRIVER, NEW SHM DRIVER" + " INSTANCE AT pshm_drv =0x%p\n", + pshm_drv->pshm_dev->shm_id, pshm_drv); + + if (pshm_dev->shm_total_sz < + (NR_TX_BUF * TX_BUF_SZ + NR_RX_BUF * RX_BUF_SZ)) { + + pr_warn("ERROR, Amount of available" + " Phys. SHM cannot accomodate current SHM " + "driver configuration, Bailing out ...\n"); + free_netdev(pshm_dev->pshm_netdev); + return -ENOMEM; + } + + pshm_drv->shm_base_addr = pshm_dev->shm_base_addr; + pshm_drv->shm_tx_addr = pshm_drv->shm_base_addr; + + if (pshm_dev->shm_loopback) + pshm_drv->shm_rx_addr = pshm_drv->shm_tx_addr; + else + pshm_drv->shm_rx_addr = pshm_dev->shm_base_addr + + (NR_TX_BUF * TX_BUF_SZ); + + INIT_LIST_HEAD(&pshm_drv->tx_empty_list); + INIT_LIST_HEAD(&pshm_drv->tx_pend_list); + INIT_LIST_HEAD(&pshm_drv->tx_full_list); + + INIT_LIST_HEAD(&pshm_drv->rx_empty_list); + INIT_LIST_HEAD(&pshm_drv->rx_pend_list); + INIT_LIST_HEAD(&pshm_drv->rx_full_list); + + INIT_WORK(&pshm_drv->shm_tx_work, shm_tx_work_func); + INIT_WORK(&pshm_drv->shm_rx_work, shm_rx_work_func); + + pshm_drv->pshm_tx_workqueue = + create_singlethread_workqueue("shm_tx_work"); + pshm_drv->pshm_rx_workqueue = + create_singlethread_workqueue("shm_rx_work"); + + for (j = 0; j < NR_TX_BUF; j++) { + struct buf_list *tx_buf = + kmalloc(sizeof(struct buf_list), GFP_KERNEL); + + if (tx_buf == NULL) { + pr_warn("ERROR, Could not" + " allocate dynamic mem. for tx_buf," + " Bailing out ...\n"); + free_netdev(pshm_dev->pshm_netdev); + return -ENOMEM; + } + tx_buf->index = j; + tx_buf->phy_addr = pshm_drv->shm_tx_addr + (TX_BUF_SZ * j); + tx_buf->len = TX_BUF_SZ; + tx_buf->frames = 0; + tx_buf->frm_ofs = SHM_CAIF_FRM_OFS; + + if (pshm_dev->shm_loopback) + tx_buf->desc_vptr = (char *)tx_buf->phy_addr; + else + tx_buf->desc_vptr = + ioremap(tx_buf->phy_addr, TX_BUF_SZ); + + list_add_tail(&tx_buf->list, &pshm_drv->tx_empty_list); + } + + for (j = 0; j < NR_RX_BUF; j++) { + struct buf_list *rx_buf = + kmalloc(sizeof(struct buf_list), GFP_KERNEL); + + if (rx_buf == NULL) { + pr_warn("ERROR, Could not" + " allocate dynamic mem.for rx_buf," + " Bailing out ...\n"); + free_netdev(pshm_dev->pshm_netdev); + return -ENOMEM; + } + rx_buf->index = j; + rx_buf->phy_addr = pshm_drv->shm_rx_addr + (RX_BUF_SZ * j); + rx_buf->len = RX_BUF_SZ; + + if (pshm_dev->shm_loopback) + rx_buf->desc_vptr = (char *)rx_buf->phy_addr; + else + rx_buf->desc_vptr = + ioremap(rx_buf->phy_addr, RX_BUF_SZ); + list_add_tail(&rx_buf->list, &pshm_drv->rx_empty_list); + } + + pshm_drv->tx_empty_available = 1; + result = register_netdev(pshm_dev->pshm_netdev); + if (result) + pr_warn("ERROR[%d], SHM could not, " + "register with NW FRMWK Bailing out ...\n", result); + + return result; +} + +void caif_shmcore_remove(struct net_device *pshm_netdev) +{ + struct buf_list *pbuf; + struct shmdrv_layer *pshm_drv = NULL; + + pshm_drv = netdev_priv(pshm_netdev); + + while (!(list_empty(&pshm_drv->tx_pend_list))) { + pbuf = + list_entry(pshm_drv->tx_pend_list.next, + struct buf_list, list); + + list_del(&pbuf->list); + kfree(pbuf); + } + + while (!(list_empty(&pshm_drv->tx_full_list))) { + pbuf = + list_entry(pshm_drv->tx_full_list.next, + struct buf_list, list); + list_del(&pbuf->list); + kfree(pbuf); + } + + while (!(list_empty(&pshm_drv->tx_empty_list))) { + pbuf = + list_entry(pshm_drv->tx_empty_list.next, + struct buf_list, list); + list_del(&pbuf->list); + kfree(pbuf); + } + + while (!(list_empty(&pshm_drv->rx_full_list))) { + pbuf = + list_entry(pshm_drv->tx_full_list.next, + struct buf_list, list); + list_del(&pbuf->list); + kfree(pbuf); + } + + while (!(list_empty(&pshm_drv->rx_pend_list))) { + pbuf = + list_entry(pshm_drv->tx_pend_list.next, + struct buf_list, list); + list_del(&pbuf->list); + kfree(pbuf); + } + + while (!(list_empty(&pshm_drv->rx_empty_list))) { + pbuf = + list_entry(pshm_drv->rx_empty_list.next, + struct buf_list, list); + list_del(&pbuf->list); + kfree(pbuf); + } + + /* Destroy work queues. */ + destroy_workqueue(pshm_drv->pshm_tx_workqueue); + destroy_workqueue(pshm_drv->pshm_rx_workqueue); + + unregister_netdev(pshm_netdev); +} -- cgit v1.2.3-70-g09d2 From e57731f4dda7a5d0c82ec3cc9ba91691b826b76e Mon Sep 17 00:00:00 2001 From: Amarnath Revanna Date: Wed, 27 Oct 2010 08:34:41 +0000 Subject: caif-u5500: CAIF shared memory mailbox interface Signed-off-by: Sjur Braendeland Signed-off-by: David S. Miller --- drivers/net/caif/caif_shm_u5500.c | 129 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 drivers/net/caif/caif_shm_u5500.c diff --git a/drivers/net/caif/caif_shm_u5500.c b/drivers/net/caif/caif_shm_u5500.c new file mode 100644 index 00000000000..1cd90da86f1 --- /dev/null +++ b/drivers/net/caif/caif_shm_u5500.c @@ -0,0 +1,129 @@ +/* + * Copyright (C) ST-Ericsson AB 2010 + * Contact: Sjur Brendeland / sjur.brandeland@stericsson.com + * Author: Amarnath Revanna / amarnath.bangalore.revanna@stericsson.com + * License terms: GNU General Public License (GPL) version 2 + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ":" __func__ "():" fmt + +#include +#include +#include +#include +#include +#include + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("CAIF Shared Memory protocol driver"); + +#define MAX_SHM_INSTANCES 1 + +enum { + MBX_ACC0, + MBX_ACC1, + MBX_DSP +}; + +static struct shmdev_layer shmdev_lyr[MAX_SHM_INSTANCES]; + +static unsigned int shm_start; +static unsigned int shm_size; + +module_param(shm_size, uint , 0440); +MODULE_PARM_DESC(shm_total_size, "Start of SHM shared memory"); + +module_param(shm_start, uint , 0440); +MODULE_PARM_DESC(shm_total_start, "Total Size of SHM shared memory"); + +static int shmdev_send_msg(u32 dev_id, u32 mbx_msg) +{ + /* Always block until msg is written successfully */ + mbox_send(shmdev_lyr[dev_id].hmbx, mbx_msg, true); + return 0; +} + +static int shmdev_mbx_setup(void *pshmdrv_cb, struct shmdev_layer *pshm_dev, + void *pshm_drv) +{ + /* + * For UX5500, we have only 1 SHM instance which uses MBX0 + * for communication with the peer modem + */ + pshm_dev->hmbx = mbox_setup(MBX_ACC0, pshmdrv_cb, pshm_drv); + + if (!pshm_dev->hmbx) + return -ENODEV; + else + return 0; +} + +static int __init caif_shmdev_init(void) +{ + int i, result; + + /* Loop is currently overkill, there is only one instance */ + for (i = 0; i < MAX_SHM_INSTANCES; i++) { + + shmdev_lyr[i].shm_base_addr = shm_start; + shmdev_lyr[i].shm_total_sz = shm_size; + + if (((char *)shmdev_lyr[i].shm_base_addr == NULL) + || (shmdev_lyr[i].shm_total_sz <= 0)) { + pr_warn("ERROR," + "Shared memory Address and/or Size incorrect" + ", Bailing out ...\n"); + result = -EINVAL; + goto clean; + } + + pr_info("SHM AREA (instance %d) STARTS" + " AT %p\n", i, (char *)shmdev_lyr[i].shm_base_addr); + + shmdev_lyr[i].shm_id = i; + shmdev_lyr[i].pshmdev_mbxsend = shmdev_send_msg; + shmdev_lyr[i].pshmdev_mbxsetup = shmdev_mbx_setup; + + /* + * Finally, CAIF core module is called with details in place: + * 1. SHM base address + * 2. SHM size + * 3. MBX handle + */ + result = caif_shmcore_probe(&shmdev_lyr[i]); + if (result) { + pr_warn("ERROR[%d]," + "Could not probe SHM core (instance %d)" + " Bailing out ...\n", result, i); + goto clean; + } + } + + return 0; + +clean: + /* + * For now, we assume that even if one instance of SHM fails, we bail + * out of the driver support completely. For this, we need to release + * any memory allocated and unregister any instance of SHM net device. + */ + for (i = 0; i < MAX_SHM_INSTANCES; i++) { + if (shmdev_lyr[i].pshm_netdev) + unregister_netdev(shmdev_lyr[i].pshm_netdev); + } + return result; +} + +static void __exit caif_shmdev_exit(void) +{ + int i; + + for (i = 0; i < MAX_SHM_INSTANCES; i++) { + caif_shmcore_remove(shmdev_lyr[i].pshm_netdev); + kfree((void *)shmdev_lyr[i].shm_base_addr); + } + +} + +module_init(caif_shmdev_init); +module_exit(caif_shmdev_exit); -- cgit v1.2.3-70-g09d2 From 1933f0c09438ed8ccfee2281b814d9b26cef336c Mon Sep 17 00:00:00 2001 From: Amarnath Revanna Date: Wed, 27 Oct 2010 08:34:42 +0000 Subject: caif-u5500: Build config for CAIF shared mem driver Signed-off-by: Sjur Braendeland Signed-off-by: David S. Miller --- drivers/net/caif/Kconfig | 7 +++++++ drivers/net/caif/Makefile | 4 ++++ 2 files changed, 11 insertions(+) diff --git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 75bfc3a9d95..09ed3f42d67 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -31,3 +31,10 @@ config CAIF_SPI_SYNC Putting the next command and length in the start of the frame can help to synchronize to the next transfer in case of over or under-runs. This option also needs to be enabled on the modem. + +config CAIF_SHM + tristate "CAIF shared memory protocol driver" + depends on CAIF && U5500_MBOX + default n + ---help--- + The CAIF shared memory protocol driver for the STE UX5500 platform. diff --git a/drivers/net/caif/Makefile b/drivers/net/caif/Makefile index 3a11d619452..b38d987da67 100644 --- a/drivers/net/caif/Makefile +++ b/drivers/net/caif/Makefile @@ -8,3 +8,7 @@ obj-$(CONFIG_CAIF_TTY) += caif_serial.o # SPI slave physical interfaces module cfspi_slave-objs := caif_spi.o caif_spi_slave.o obj-$(CONFIG_CAIF_SPI_SLAVE) += cfspi_slave.o + +# Shared memory +caif_shm-objs := caif_shmcore.o caif_shm_u5500.o +obj-$(CONFIG_CAIF_SHM) += caif_shm.o -- cgit v1.2.3-70-g09d2 From 74b0b85b88aaa952023762e0280799aaae849841 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Wed, 27 Oct 2010 05:43:53 +0000 Subject: tunnels: Fix tunnels change rcu protection After making rcu protection for tunnels (ipip, gre, sit and ip6) a bug was introduced into the SIOCCHGTUNNEL code. The tunnel is first unlinked, then addresses change, then it is linked back probably into another bucket. But while changing the parms, the hash table is unlocked to readers and they can lookup the improper tunnel. Respective commits are b7285b79 (ipip: get rid of ipip_lock), 1507850b (gre: get rid of ipgre_lock), 3a43be3c (sit: get rid of ipip6_lock) and 94767632 (ip6tnl: get rid of ip6_tnl_lock). The quick fix is to wait for quiescent state to pass after unlinking, but if it is inappropriate I can invent something better, just let me know. Signed-off-by: Pavel Emelyanov Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 1 + net/ipv4/ipip.c | 1 + net/ipv6/ip6_tunnel.c | 1 + net/ipv6/sit.c | 1 + 4 files changed, 4 insertions(+) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index d0ffcbe369b..01087e035b7 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1072,6 +1072,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) break; } ipgre_tunnel_unlink(ign, t); + synchronize_net(); t->parms.iph.saddr = p.iph.saddr; t->parms.iph.daddr = p.iph.daddr; t->parms.i_key = p.i_key; diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index e9b816e6cd7..cd300aaee78 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -676,6 +676,7 @@ ipip_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) } t = netdev_priv(dev); ipip_tunnel_unlink(ipn, t); + synchronize_net(); t->parms.iph.saddr = p.iph.saddr; t->parms.iph.daddr = p.iph.daddr; memcpy(dev->dev_addr, &p.iph.saddr, 4); diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 38b9a56c173..2a59610c2a5 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1284,6 +1284,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) t = netdev_priv(dev); ip6_tnl_unlink(ip6n, t); + synchronize_net(); err = ip6_tnl_change(t, &p); ip6_tnl_link(ip6n, t); netdev_state_change(dev); diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 367a6cc584c..d6bfaec3bbb 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -963,6 +963,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) } t = netdev_priv(dev); ipip6_tunnel_unlink(sitn, t); + synchronize_net(); t->parms.iph.saddr = p.iph.saddr; t->parms.iph.daddr = p.iph.daddr; memcpy(dev->dev_addr, &p.iph.saddr, 4); -- cgit v1.2.3-70-g09d2 From a71fb88145a03678fef3796930993e390db68a15 Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Wed, 27 Oct 2010 07:08:22 +0000 Subject: bonding: Fix lockdep warning after bond_vlan_rx_register() Fix lockdep warning: [ 52.991402] ====================================================== [ 52.991511] [ INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected ] [ 52.991569] 2.6.36-04573-g4b60626-dirty #65 [ 52.991622] ------------------------------------------------------ [ 52.991696] ip/4842 [HC0[0]:SC0[4]:HE1:SE0] is trying to acquire: [ 52.991758] (&bond->lock){++++..}, at: [] bond_set_multicast_list+0x60/0x2c0 [bonding] [ 52.991966] [ 52.991967] and this task is already holding: [ 52.992008] (&bonding_netdev_addr_lock_key){+.....}, at: [] dev_mc_sync+0x50/0xa0 [ 52.992008] which would create a new lock dependency: [ 52.992008] (&bonding_netdev_addr_lock_key){+.....} -> (&bond->lock){++++..} [ 52.992008] [ 52.992008] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 52.992008] (&(&mc->mca_lock)->rlock){+.-...} [ 52.992008] ... which became SOFTIRQ-irq-safe at: [ 52.992008] [] __lock_acquire+0x96b/0x1960 [ 52.992008] [] lock_acquire+0x7e/0xf0 [ 52.992008] [] _raw_spin_lock_bh+0x3d/0x50 [ 52.992008] [] mld_ifc_timer_expire+0xf0/0x280 [ 52.992008] [] run_timer_softirq+0x146/0x310 [ 52.992008] [] __do_softirq+0xad/0x1c0 [ 52.992008] [ 52.992008] to a SOFTIRQ-irq-unsafe lock: [ 52.992008] (&bond->lock){++++..} [ 52.992008] ... which became SOFTIRQ-irq-unsafe at: [ 52.992008] ... [] __lock_acquire+0x9bb/0x1960 [ 52.992008] [] lock_acquire+0x7e/0xf0 [ 52.992008] [] _raw_write_lock+0x38/0x50 [ 52.992008] [] bond_vlan_rx_register+0x24/0x70 [bonding] [ 52.992008] [] register_vlan_dev+0xc0/0x280 [ 52.992008] [] vlan_newlink+0xaa/0xd0 [ 52.992008] [] rtnl_newlink+0x404/0x490 [ 52.992008] [] rtnetlink_rcv_msg+0x1e5/0x220 [ 52.992008] [] netlink_rcv_skb+0x8e/0xb0 [ 52.992008] [] rtnetlink_rcv+0x1c/0x30 [ 52.992008] [] netlink_unicast+0x24b/0x290 [ 52.992008] [] netlink_sendmsg+0x1f7/0x310 [ 52.992008] [] sock_sendmsg+0xac/0xe0 [ 52.992008] [] sys_sendmsg+0x130/0x230 [ 52.992008] [] sys_socketcall+0xde/0x280 [ 52.992008] [] sysenter_do_call+0x12/0x36 [ 52.992008] [ 52.992008] other info that might help us debug this: ... [ Full info at netdev: Wed, 27 Oct 2010 12:24:30 +0200 Subject: [BUG net-2.6 vlan/bonding] lockdep splats ] Use BH variant of write_lock(&bond->lock) (as elsewhere in bond_main) to prevent this dependency. Fixes commit f35188faa0fbabefac476536994f4b6f3677380f [v2.6.36] Reported-by: Eric Dumazet Tested-by: Eric Dumazet Signed-off-by: Jarek Poplawski Acked-by: Eric Dumazet Cc: Jay Vosburgh --- drivers/net/bonding/bond_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index beb3b7cecd5..bdb68a60038 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -493,9 +493,9 @@ static void bond_vlan_rx_register(struct net_device *bond_dev, struct slave *slave; int i; - write_lock(&bond->lock); + write_lock_bh(&bond->lock); bond->vlgrp = grp; - write_unlock(&bond->lock); + write_unlock_bh(&bond->lock); bond_for_each_slave(bond, slave, i) { struct net_device *slave_dev = slave->dev; -- cgit v1.2.3-70-g09d2 From ce45b873028fdf94a24f0850cd554e6fda593e16 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 27 Oct 2010 08:45:14 +0000 Subject: ehea: Fixing statistics (Applied over Eric's "ehea: fix use after free" patch) Currently ehea stats are broken. The bytes counters are got from the hardware, while the packets counters are got from the device driver. Also, the device driver counters are resetted during the the down process, and the hardware aren't, causing some weird numbers. This patch just consolidates the packets and bytes on the device driver. Signed-off-by: Breno Leitao Reviewed-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/ehea/ehea.h | 2 ++ drivers/net/ehea/ehea_main.c | 32 ++++++++++++++++++++++++++------ 2 files changed, 28 insertions(+), 6 deletions(-) diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h index 1321cb6401c..8e745e74828 100644 --- a/drivers/net/ehea/ehea.h +++ b/drivers/net/ehea/ehea.h @@ -396,7 +396,9 @@ struct ehea_port_res { int swqe_ll_count; u32 swqe_id_counter; u64 tx_packets; + u64 tx_bytes; u64 rx_packets; + u64 rx_bytes; u32 poll_counter; struct net_lro_mgr lro_mgr; struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS]; diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index e59d3862909..182b2a7be8d 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -330,7 +330,7 @@ static struct net_device_stats *ehea_get_stats(struct net_device *dev) struct ehea_port *port = netdev_priv(dev); struct net_device_stats *stats = &port->stats; struct hcp_ehea_port_cb2 *cb2; - u64 hret, rx_packets, tx_packets; + u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0; int i; memset(stats, 0, sizeof(*stats)); @@ -353,18 +353,22 @@ static struct net_device_stats *ehea_get_stats(struct net_device *dev) ehea_dump(cb2, sizeof(*cb2), "net_device_stats"); rx_packets = 0; - for (i = 0; i < port->num_def_qps; i++) + for (i = 0; i < port->num_def_qps; i++) { rx_packets += port->port_res[i].rx_packets; + rx_bytes += port->port_res[i].rx_bytes; + } tx_packets = 0; - for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) + for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { tx_packets += port->port_res[i].tx_packets; + tx_bytes += port->port_res[i].tx_bytes; + } stats->tx_packets = tx_packets; stats->multicast = cb2->rxmcp; stats->rx_errors = cb2->rxuerr; - stats->rx_bytes = cb2->rxo; - stats->tx_bytes = cb2->txo; + stats->rx_bytes = rx_bytes; + stats->tx_bytes = tx_bytes; stats->rx_packets = rx_packets; out_herr: @@ -703,6 +707,7 @@ static int ehea_proc_rwqes(struct net_device *dev, int skb_arr_rq2_len = pr->rq2_skba.len; int skb_arr_rq3_len = pr->rq3_skba.len; int processed, processed_rq1, processed_rq2, processed_rq3; + u64 processed_bytes = 0; int wqe_index, last_wqe_index, rq, port_reset; processed = processed_rq1 = processed_rq2 = processed_rq3 = 0; @@ -760,6 +765,7 @@ static int ehea_proc_rwqes(struct net_device *dev, processed_rq3++; } + processed_bytes += skb->len; ehea_proc_skb(pr, cqe, skb); } else { pr->p_stats.poll_receive_errors++; @@ -775,6 +781,7 @@ static int ehea_proc_rwqes(struct net_device *dev, lro_flush_all(&pr->lro_mgr); pr->rx_packets += processed; + pr->rx_bytes += processed_bytes; ehea_refill_rq1(pr, last_wqe_index, processed_rq1); ehea_refill_rq2(pr, processed_rq2); @@ -1509,9 +1516,20 @@ static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr, enum ehea_eq_type eq_type = EHEA_EQ; struct ehea_qp_init_attr *init_attr = NULL; int ret = -EIO; + u64 tx_bytes, rx_bytes, tx_packets, rx_packets; + + tx_bytes = pr->tx_bytes; + tx_packets = pr->tx_packets; + rx_bytes = pr->rx_bytes; + rx_packets = pr->rx_packets; memset(pr, 0, sizeof(struct ehea_port_res)); + pr->tx_bytes = rx_bytes; + pr->tx_packets = tx_packets; + pr->rx_bytes = rx_bytes; + pr->rx_packets = rx_packets; + pr->port = port; spin_lock_init(&pr->xmit_lock); spin_lock_init(&pr->netif_queue); @@ -2254,6 +2272,9 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) swqe->vlan_tag = vlan_tx_tag_get(skb); } + pr->tx_packets++; + pr->tx_bytes += skb->len; + if (skb->len <= SWQE3_MAX_IMM) { u32 sig_iv = port->sig_comp_iv; u32 swqe_num = pr->swqe_id_counter; @@ -2295,7 +2316,6 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev) } ehea_post_swqe(pr->qp, swqe); - pr->tx_packets++; if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) { spin_lock_irqsave(&pr->netif_queue, flags); -- cgit v1.2.3-70-g09d2