Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking changes from David S Miller:

 1) Remove the ipv4 routing cache.  Now lookups go directly into the FIB
    trie and use prebuilt routes cached there.

    No more garbage collection, no more rDOS attacks on the routing
    cache.  Instead we now get predictable and consistent performance,
    no matter what the pattern of traffic we service.

    This has been almost 2 years in the making.  Special thanks to
    Julian Anastasov, Eric Dumazet, Steffen Klassert, and others who
    have helped along the way.

    I'm sure that with a change of this magnitude there will be some
    kind of fallout, but such things ought the be simple to fix at this
    point.  Luckily I'm not European so I'll be around all of August to
    fix things :-)

    The major stages of this work here are each fronted by a forced
    merge commit whose commit message contains a top-level description
    of the motivations and implementation issues.

 2) Pre-demux of established ipv4 TCP sockets, saves a route demux on
    input.

 3) TCP SYN/ACK performance tweaks from Eric Dumazet.

 4) Add namespace support for netfilter L4 conntrack helpers, from Gao
    Feng.

 5) Add config mechanism for Energy Efficient Ethernet to ethtool, from
    Yuval Mintz.

 6) Remove quadratic behavior from /proc/net/unix, from Eric Dumazet.

 7) Support for connection tracker helpers in userspace, from Pablo
    Neira Ayuso.

 8) Allow userspace driven TX load balancing functions in TEAM driver,
    from Jiri Pirko.

 9) Kill off NLMSG_PUT and RTA_PUT macros, more gross stuff with
    embedded gotos.

10) TCP Small Queues, essentially minimize the amount of TCP data queued
    up in the packet scheduler layer.  Whereas the existing BQL (Byte
    Queue Limits) limits the pkt_sched --> netdevice queuing levels,
    this controls the TCP --> pkt_sched queueing levels.

    From Eric Dumazet.

11) Reduce the number of get_page/put_page ops done on SKB fragments,
    from Alexander Duyck.

12) Implement protection against blind resets in TCP (RFC 5961), from
    Eric Dumazet.

13) Support the client side of TCP Fast Open, basically the ability to
    send data in the SYN exchange, from Yuchung Cheng.

    Basically, the sender queues up data with a sendmsg() call using
    MSG_FASTOPEN, then they do the connect() which emits the queued up
    fastopen data.

14) Avoid all the problems we get into in TCP when timers or PMTU events
    hit a locked socket.  The TCP Small Queues changes added a
    tcp_release_cb() that allows us to queue work up to the
    release_sock() caller, and that's what we use here too.  From Eric
    Dumazet.

15) Zero copy on TX support for TUN driver, from Michael S. Tsirkin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1870 commits)
  genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP
  r8169: revert "add byte queue limit support".
  ipv4: Change rt->rt_iif encoding.
  net: Make skb->skb_iif always track skb->dev
  ipv4: Prepare for change of rt->rt_iif encoding.
  ipv4: Remove all RTCF_DIRECTSRC handliing.
  ipv4: Really ignore ICMP address requests/replies.
  decnet: Don't set RTCF_DIRECTSRC.
  net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
  ipv4: Remove redundant assignment
  rds: set correct msg_namelen
  openvswitch: potential NULL deref in sample()
  tcp: dont drop MTU reduction indications
  bnx2x: Add new 57840 device IDs
  tcp: avoid oops in tcp_metrics and reset tcpm_stamp
  niu: Change niu_rbr_fill() to use unlikely() to check niu_rbr_add_page() return value
  niu: Fix to check for dma mapping errors.
  net: Fix references to out-of-scope variables in put_cmsg_compat()
  net: ethernet: davinci_emac: add pm_runtime support
  net: ethernet: davinci_emac: Remove unnecessary #include
  ...

1 files changed, 0 insertions, 509 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/sdio.c b/drivers/net/wireless/iwmc3200wifi/sdio.c
deleted file mode 100644
index 0042f204b07..00000000000
--- a/drivers/net/wireless/iwmc3200wifi/sdio.c
+++ /dev/null
@@ -1,509 +0,0 @@
-/*
- * Intel Wireless Multicomm 3200 WiFi driver
- *
- * Copyright (C) 2009 Intel Corporation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- *   * Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *   * Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in
- *     the documentation and/or other materials provided with the
- *     distribution.
- *   * Neither the name of Intel Corporation nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *
- * Intel Corporation <ilw@linux.intel.com>
- * Samuel Ortiz <samuel.ortiz@intel.com>
- * Zhu Yi <yi.zhu@intel.com>
- *
- */
-
-/*
- * This is the SDIO bus specific hooks for iwm.
- * It also is the module's entry point.
- *
- * Interesting code paths:
- * iwm_sdio_probe() (Called by an SDIO bus scan)
- *  -> iwm_if_alloc() (netdev.c)
- *      -> iwm_wdev_alloc() (cfg80211.c, allocates and register our wiphy)
- *          -> wiphy_new()
- *          -> wiphy_register()
- *      -> alloc_netdev_mq()
- *      -> register_netdev()
- *
- * iwm_sdio_remove()
- *  -> iwm_if_free() (netdev.c)
- *      -> unregister_netdev()
- *      -> iwm_wdev_free() (cfg80211.c)
- *          -> wiphy_unregister()
- *          -> wiphy_free()
- *
- * iwm_sdio_isr() (called in process context from the SDIO core code)
- *  -> queue_work(.., isr_worker)
- *      -- [async] --> iwm_sdio_isr_worker()
- *                      -> iwm_rx_handle()
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/netdevice.h>
-#include <linux/debugfs.h>
-#include <linux/mmc/sdio_ids.h>
-#include <linux/mmc/sdio.h>
-#include <linux/mmc/sdio_func.h>
-
-#include "iwm.h"
-#include "debug.h"
-#include "bus.h"
-#include "sdio.h"
-
-static void iwm_sdio_isr_worker(struct work_struct *work)
-{
-	struct iwm_sdio_priv *hw;
-	struct iwm_priv *iwm;
-	struct iwm_rx_info *rx_info;
-	struct sk_buff *skb;
-	u8 *rx_buf;
-	unsigned long rx_size;
-
-	hw = container_of(work, struct iwm_sdio_priv, isr_worker);
-	iwm = hw_to_iwm(hw);
-
-	while (!skb_queue_empty(&iwm->rx_list)) {
-		skb = skb_dequeue(&iwm->rx_list);
-		rx_info = skb_to_rx_info(skb);
-		rx_size = rx_info->rx_size;
-		rx_buf = skb->data;
-
-		IWM_HEXDUMP(iwm, DBG, SDIO, "RX: ", rx_buf, rx_size);
-		if (iwm_rx_handle(iwm, rx_buf, rx_size) < 0)
-			IWM_WARN(iwm, "RX error\n");
-
-		kfree_skb(skb);
-	}
-}
-
-static void iwm_sdio_isr(struct sdio_func *func)
-{
-	struct iwm_priv *iwm;
-	struct iwm_sdio_priv *hw;
-	struct iwm_rx_info *rx_info;
-	struct sk_buff *skb;
-	unsigned long buf_size, read_size;
-	int ret;
-	u8 val;
-
-	hw = sdio_get_drvdata(func);
-	iwm = hw_to_iwm(hw);
-
-	buf_size = hw->blk_size;
-
-	/* We're checking the status */
-	val = sdio_readb(func, IWM_SDIO_INTR_STATUS_ADDR, &ret);
-	if (val == 0 || ret < 0) {
-		IWM_ERR(iwm, "Wrong INTR_STATUS\n");
-		return;
-	}
-
-	/* See if we have free buffers */
-	if (skb_queue_len(&iwm->rx_list) > IWM_RX_LIST_SIZE) {
-		IWM_ERR(iwm, "No buffer for more Rx frames\n");
-		return;
-	}
-
-	/* We first read the transaction size */
-	read_size = sdio_readb(func, IWM_SDIO_INTR_GET_SIZE_ADDR + 1, &ret);
-	read_size = read_size << 8;
-
-	if (ret < 0) {
-		IWM_ERR(iwm, "Couldn't read the xfer size\n");
-		return;
-	}
-
-	/* We need to clear the INT register */
-	sdio_writeb(func, 1, IWM_SDIO_INTR_CLEAR_ADDR, &ret);
-	if (ret < 0) {
-		IWM_ERR(iwm, "Couldn't clear the INT register\n");
-		return;
-	}
-
-	while (buf_size < read_size)
-		buf_size <<= 1;
-
-	skb = dev_alloc_skb(buf_size);
-	if (!skb) {
-		IWM_ERR(iwm, "Couldn't alloc RX skb\n");
-		return;
-	}
-	rx_info = skb_to_rx_info(skb);
-	rx_info->rx_size = read_size;
-	rx_info->rx_buf_size = buf_size;
-
-	/* Now we can read the actual buffer */
-	ret = sdio_memcpy_fromio(func, skb_put(skb, read_size),
-				 IWM_SDIO_DATA_ADDR, read_size);
-
-	/* The skb is put on a driver's specific Rx SKB list */
-	skb_queue_tail(&iwm->rx_list, skb);
-
-	/* We can now schedule the actual worker */
-	queue_work(hw->isr_wq, &hw->isr_worker);
-}
-
-static void iwm_sdio_rx_free(struct iwm_sdio_priv *hw)
-{
-	struct iwm_priv *iwm = hw_to_iwm(hw);
-
-	flush_workqueue(hw->isr_wq);
-
-	skb_queue_purge(&iwm->rx_list);
-}
-
-/* Bus ops */
-static int if_sdio_enable(struct iwm_priv *iwm)
-{
-	struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
-	int ret;
-
-	sdio_claim_host(hw->func);
-
-	ret = sdio_enable_func(hw->func);
-	if (ret) {
-		IWM_ERR(iwm, "Couldn't enable the device: is TOP driver "
-			"loaded and functional?\n");
-		goto release_host;
-	}
-
-	iwm_reset(iwm);
-
-	ret = sdio_claim_irq(hw->func, iwm_sdio_isr);
-	if (ret) {
-		IWM_ERR(iwm, "Failed to claim irq: %d\n", ret);
-		goto release_host;
-	}
-
-	sdio_writeb(hw->func, 1, IWM_SDIO_INTR_ENABLE_ADDR, &ret);
-	if (ret < 0) {
-		IWM_ERR(iwm, "Couldn't enable INTR: %d\n", ret);
-		goto release_irq;
-	}
-
-	sdio_release_host(hw->func);
-
-	IWM_DBG_SDIO(iwm, INFO, "IWM SDIO enable\n");
-
-	return 0;
-
- release_irq:
-	sdio_release_irq(hw->func);
- release_host:
-	sdio_release_host(hw->func);
-
-	return ret;
-}
-
-static int if_sdio_disable(struct iwm_priv *iwm)
-{
-	struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
-	int ret;
-
-	sdio_claim_host(hw->func);
-	sdio_writeb(hw->func, 0, IWM_SDIO_INTR_ENABLE_ADDR, &ret);
-	if (ret < 0)
-		IWM_WARN(iwm, "Couldn't disable INTR: %d\n", ret);
-
-	sdio_release_irq(hw->func);
-	sdio_disable_func(hw->func);
-	sdio_release_host(hw->func);
-
-	iwm_sdio_rx_free(hw);
-
-	iwm_reset(iwm);
-
-	IWM_DBG_SDIO(iwm, INFO, "IWM SDIO disable\n");
-
-	return 0;
-}
-
-static int if_sdio_send_chunk(struct iwm_priv *iwm, u8 *buf, int count)
-{
-	struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
-	int aligned_count = ALIGN(count, hw->blk_size);
-	int ret;
-
-	if ((unsigned long)buf & 0x3) {
-		IWM_ERR(iwm, "buf <%p> is not dword aligned\n", buf);
-		/* TODO: Is this a hardware limitation? use get_unligned */
-		return -EINVAL;
-	}
-
-	sdio_claim_host(hw->func);
-	ret = sdio_memcpy_toio(hw->func, IWM_SDIO_DATA_ADDR, buf,
-			       aligned_count);
-	sdio_release_host(hw->func);
-
-	return ret;
-}
-
-static ssize_t iwm_debugfs_sdio_read(struct file *filp, char __user *buffer,
-				     size_t count, loff_t *ppos)
-{
-	struct iwm_priv *iwm = filp->private_data;
-	struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
-	char *buf;
-	u8 cccr;
-	int buf_len = 4096, ret;
-	size_t len = 0;
-
-	if (*ppos != 0)
-		return 0;
-	if (count < sizeof(buf))
-		return -ENOSPC;
-
-	buf = kzalloc(buf_len, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
-	sdio_claim_host(hw->func);
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_IOEx, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_IOEx\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_IOEx:  0x%x\n", cccr);
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_IORx, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_IORx\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_IORx:  0x%x\n", cccr);
-
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_IENx, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_IENx\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_IENx:  0x%x\n", cccr);
-
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_INTx, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_INTx\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_INTx:  0x%x\n", cccr);
-
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_ABORT, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_ABORTx\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_ABORT: 0x%x\n", cccr);
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_IF, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_IF\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_IF:    0x%x\n", cccr);
-
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_CAPS, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_CAPS\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_CAPS:  0x%x\n", cccr);
-
-	cccr =  sdio_f0_readb(hw->func, SDIO_CCCR_CIS, &ret);
-	if (ret) {
-		IWM_ERR(iwm, "Could not read SDIO_CCCR_CIS\n");
-		goto err;
-	}
-	len += snprintf(buf + len, buf_len - len, "CCCR_CIS:   0x%x\n", cccr);
-
-	ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
-err:
-	sdio_release_host(hw->func);
-
-	kfree(buf);
-
-	return ret;
-}
-
-static const struct file_operations iwm_debugfs_sdio_fops = {
-	.owner =	THIS_MODULE,
-	.open =		simple_open,
-	.read =		iwm_debugfs_sdio_read,
-	.llseek =	default_llseek,
-};
-
-static void if_sdio_debugfs_init(struct iwm_priv *iwm, struct dentry *parent_dir)
-{
-	struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
-
-	hw->cccr_dentry = debugfs_create_file("cccr", 0200,
-					      parent_dir, iwm,
-					      &iwm_debugfs_sdio_fops);
-}
-
-static void if_sdio_debugfs_exit(struct iwm_priv *iwm)
-{
-	struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
-
-	debugfs_remove(hw->cccr_dentry);
-}
-
-static struct iwm_if_ops if_sdio_ops = {
-	.enable = if_sdio_enable,
-	.disable = if_sdio_disable,
-	.send_chunk = if_sdio_send_chunk,
-	.debugfs_init = if_sdio_debugfs_init,
-	.debugfs_exit = if_sdio_debugfs_exit,
-	.umac_name = "iwmc3200wifi-umac-sdio.bin",
-	.calib_lmac_name = "iwmc3200wifi-calib-sdio.bin",
-	.lmac_name = "iwmc3200wifi-lmac-sdio.bin",
-};
-MODULE_FIRMWARE("iwmc3200wifi-umac-sdio.bin");
-MODULE_FIRMWARE("iwmc3200wifi-calib-sdio.bin");
-MODULE_FIRMWARE("iwmc3200wifi-lmac-sdio.bin");
-
-static int iwm_sdio_probe(struct sdio_func *func,
-			  const struct sdio_device_id *id)
-{
-	struct iwm_priv *iwm;
-	struct iwm_sdio_priv *hw;
-	struct device *dev = &func->dev;
-	int ret;
-
-	/* check if TOP has already initialized the card */
-	sdio_claim_host(func);
-	ret = sdio_enable_func(func);
-	if (ret) {
-		dev_err(dev, "wait for TOP to enable the device\n");
-		sdio_release_host(func);
-		return ret;
-	}
-
-	ret = sdio_set_block_size(func, IWM_SDIO_BLK_SIZE);
-
-	sdio_disable_func(func);
-	sdio_release_host(func);
-
-	if (ret < 0) {
-		dev_err(dev, "Failed to set block size: %d\n", ret);
-		return ret;
-	}
-
-	iwm = iwm_if_alloc(sizeof(struct iwm_sdio_priv), dev, &if_sdio_ops);
-	if (IS_ERR(iwm)) {
-		dev_err(dev, "allocate SDIO interface failed\n");
-		return PTR_ERR(iwm);
-	}
-
-	hw = iwm_private(iwm);
-	hw->iwm = iwm;
-
-	iwm_debugfs_init(iwm);
-
-	sdio_set_drvdata(func, hw);
-
-	hw->func = func;
-	hw->blk_size = IWM_SDIO_BLK_SIZE;
-
-	hw->isr_wq = create_singlethread_workqueue(KBUILD_MODNAME "_sdio");
-	if (!hw->isr_wq) {
-		ret = -ENOMEM;
-		goto debugfs_exit;
-	}
-
-	INIT_WORK(&hw->isr_worker, iwm_sdio_isr_worker);
-
-	ret = iwm_if_add(iwm);
-	if (ret) {
-		dev_err(dev, "add SDIO interface failed\n");
-		goto destroy_wq;
-	}
-
-	dev_info(dev, "IWM SDIO probe\n");
-
-	return 0;
-
- destroy_wq:
-	destroy_workqueue(hw->isr_wq);
- debugfs_exit:
-	iwm_debugfs_exit(iwm);
-	iwm_if_free(iwm);
-	return ret;
-}
-
-static void iwm_sdio_remove(struct sdio_func *func)
-{
-	struct iwm_sdio_priv *hw = sdio_get_drvdata(func);
-	struct iwm_priv *iwm = hw_to_iwm(hw);
-	struct device *dev = &func->dev;
-
-	iwm_if_remove(iwm);
-	destroy_workqueue(hw->isr_wq);
-	iwm_debugfs_exit(iwm);
-	iwm_if_free(iwm);
-
-	sdio_set_drvdata(func, NULL);
-
-	dev_info(dev, "IWM SDIO remove\n");
-}
-
-static const struct sdio_device_id iwm_sdio_ids[] = {
-	/* Global/AGN SKU */
-	{ SDIO_DEVICE(SDIO_VENDOR_ID_INTEL, 0x1403) },
-	/* BGN SKU */
-	{ SDIO_DEVICE(SDIO_VENDOR_ID_INTEL, 0x1408) },
-	{ /* end: all zeroes */	},
-};
-MODULE_DEVICE_TABLE(sdio, iwm_sdio_ids);
-
-static struct sdio_driver iwm_sdio_driver = {
-	.name		= "iwm_sdio",
-	.id_table	= iwm_sdio_ids,
-	.probe		= iwm_sdio_probe,
-	.remove		= iwm_sdio_remove,
-};
-
-static int __init iwm_sdio_init_module(void)
-{
-	return sdio_register_driver(&iwm_sdio_driver);
-}
-
-static void __exit iwm_sdio_exit_module(void)
-{
-	sdio_unregister_driver(&iwm_sdio_driver);
-}
-
-module_init(iwm_sdio_init_module);
-module_exit(iwm_sdio_exit_module);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR(IWM_COPYRIGHT " " IWM_AUTHOR);