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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 16:29:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 16:29:25 -0700
commit7a6362800cb7d1d618a697a650c7aaed3eb39320 (patch)
tree087f9bc6c13ef1fad4b392c5cf9325cd28fa8523 /drivers/net/sfc/net_driver.h
parent6445ced8670f37cfc2c5e24a9de9b413dbfc788d (diff)
parentceda86a108671294052cbf51660097b6534672f5 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1480 commits) bonding: enable netpoll without checking link status xfrm: Refcount destination entry on xfrm_lookup net: introduce rx_handler results and logic around that bonding: get rid of IFF_SLAVE_INACTIVE netdev->priv_flag bonding: wrap slave state work net: get rid of multiple bond-related netdevice->priv_flags bonding: register slave pointer for rx_handler be2net: Bump up the version number be2net: Copyright notice change. Update to Emulex instead of ServerEngines e1000e: fix kconfig for crc32 dependency netfilter ebtables: fix xt_AUDIT to work with ebtables xen network backend driver bonding: Improve syslog message at device creation time bonding: Call netif_carrier_off after register_netdevice bonding: Incorrect TX queue offset net_sched: fix ip_tos2prio xfrm: fix __xfrm_route_forward() be2net: Fix UDP packet detected status in RX compl Phonet: fix aligned-mode pipe socket buffer header reserve netxen: support for GbE port settings ... Fix up conflicts in drivers/staging/brcm80211/brcmsmac/wl_mac80211.c with the staging updates.
Diffstat (limited to 'drivers/net/sfc/net_driver.h')
-rw-r--r--drivers/net/sfc/net_driver.h83
1 files changed, 61 insertions, 22 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 28df8665256..215d5c51bfa 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -1,7 +1,7 @@
/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2005-2009 Solarflare Communications Inc.
+ * Copyright 2005-2011 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
@@ -41,7 +41,7 @@
*
**************************************************************************/
-#define EFX_DRIVER_VERSION "3.0"
+#define EFX_DRIVER_VERSION "3.1"
#ifdef EFX_ENABLE_DEBUG
#define EFX_BUG_ON_PARANOID(x) BUG_ON(x)
@@ -63,10 +63,12 @@
/* Checksum generation is a per-queue option in hardware, so each
* queue visible to the networking core is backed by two hardware TX
* queues. */
-#define EFX_MAX_CORE_TX_QUEUES EFX_MAX_CHANNELS
-#define EFX_TXQ_TYPE_OFFLOAD 1
-#define EFX_TXQ_TYPES 2
-#define EFX_MAX_TX_QUEUES (EFX_TXQ_TYPES * EFX_MAX_CORE_TX_QUEUES)
+#define EFX_MAX_TX_TC 2
+#define EFX_MAX_CORE_TX_QUEUES (EFX_MAX_TX_TC * EFX_MAX_CHANNELS)
+#define EFX_TXQ_TYPE_OFFLOAD 1 /* flag */
+#define EFX_TXQ_TYPE_HIGHPRI 2 /* flag */
+#define EFX_TXQ_TYPES 4
+#define EFX_MAX_TX_QUEUES (EFX_TXQ_TYPES * EFX_MAX_CHANNELS)
/**
* struct efx_special_buffer - An Efx special buffer
@@ -140,6 +142,7 @@ struct efx_tx_buffer {
* @buffer: The software buffer ring
* @txd: The hardware descriptor ring
* @ptr_mask: The size of the ring minus 1.
+ * @initialised: Has hardware queue been initialised?
* @flushed: Used when handling queue flushing
* @read_count: Current read pointer.
* This is the number of buffers that have been removed from both rings.
@@ -182,6 +185,7 @@ struct efx_tx_queue {
struct efx_tx_buffer *buffer;
struct efx_special_buffer txd;
unsigned int ptr_mask;
+ bool initialised;
enum efx_flush_state flushed;
/* Members used mainly on the completion path */
@@ -210,15 +214,17 @@ struct efx_tx_queue {
* If both this and page are %NULL, the buffer slot is currently free.
* @page: The associated page buffer, if any.
* If both this and skb are %NULL, the buffer slot is currently free.
- * @data: Pointer to ethernet header
* @len: Buffer length, in bytes.
+ * @is_page: Indicates if @page is valid. If false, @skb is valid.
*/
struct efx_rx_buffer {
dma_addr_t dma_addr;
- struct sk_buff *skb;
- struct page *page;
- char *data;
+ union {
+ struct sk_buff *skb;
+ struct page *page;
+ } u;
unsigned int len;
+ bool is_page;
};
/**
@@ -358,6 +364,9 @@ struct efx_channel {
unsigned int irq_count;
unsigned int irq_mod_score;
+#ifdef CONFIG_RFS_ACCEL
+ unsigned int rfs_filters_added;
+#endif
int rx_alloc_level;
int rx_alloc_push_pages;
@@ -377,7 +386,7 @@ struct efx_channel {
bool rx_pkt_csummed;
struct efx_rx_queue rx_queue;
- struct efx_tx_queue tx_queue[2];
+ struct efx_tx_queue tx_queue[EFX_TXQ_TYPES];
};
enum efx_led_mode {
@@ -906,7 +915,7 @@ struct efx_nic_type {
unsigned int phys_addr_channels;
unsigned int tx_dc_base;
unsigned int rx_dc_base;
- unsigned long offload_features;
+ u32 offload_features;
u32 reset_world_flags;
};
@@ -938,18 +947,40 @@ efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type)
return &efx->channel[efx->tx_channel_offset + index]->tx_queue[type];
}
+static inline bool efx_channel_has_tx_queues(struct efx_channel *channel)
+{
+ return channel->channel - channel->efx->tx_channel_offset <
+ channel->efx->n_tx_channels;
+}
+
static inline struct efx_tx_queue *
efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type)
{
- struct efx_tx_queue *tx_queue = channel->tx_queue;
- EFX_BUG_ON_PARANOID(type >= EFX_TXQ_TYPES);
- return tx_queue->channel ? tx_queue + type : NULL;
+ EFX_BUG_ON_PARANOID(!efx_channel_has_tx_queues(channel) ||
+ type >= EFX_TXQ_TYPES);
+ return &channel->tx_queue[type];
+}
+
+static inline bool efx_tx_queue_used(struct efx_tx_queue *tx_queue)
+{
+ return !(tx_queue->efx->net_dev->num_tc < 2 &&
+ tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI);
}
/* Iterate over all TX queues belonging to a channel */
#define efx_for_each_channel_tx_queue(_tx_queue, _channel) \
- for (_tx_queue = efx_channel_get_tx_queue(channel, 0); \
- _tx_queue && _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \
+ if (!efx_channel_has_tx_queues(_channel)) \
+ ; \
+ else \
+ for (_tx_queue = (_channel)->tx_queue; \
+ _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES && \
+ efx_tx_queue_used(_tx_queue); \
+ _tx_queue++)
+
+/* Iterate over all possible TX queues belonging to a channel */
+#define efx_for_each_possible_channel_tx_queue(_tx_queue, _channel) \
+ for (_tx_queue = (_channel)->tx_queue; \
+ _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \
_tx_queue++)
static inline struct efx_rx_queue *
@@ -959,18 +990,26 @@ efx_get_rx_queue(struct efx_nic *efx, unsigned index)
return &efx->channel[index]->rx_queue;
}
+static inline bool efx_channel_has_rx_queue(struct efx_channel *channel)
+{
+ return channel->channel < channel->efx->n_rx_channels;
+}
+
static inline struct efx_rx_queue *
efx_channel_get_rx_queue(struct efx_channel *channel)
{
- return channel->channel < channel->efx->n_rx_channels ?
- &channel->rx_queue : NULL;
+ EFX_BUG_ON_PARANOID(!efx_channel_has_rx_queue(channel));
+ return &channel->rx_queue;
}
/* Iterate over all RX queues belonging to a channel */
#define efx_for_each_channel_rx_queue(_rx_queue, _channel) \
- for (_rx_queue = efx_channel_get_rx_queue(channel); \
- _rx_queue; \
- _rx_queue = NULL)
+ if (!efx_channel_has_rx_queue(_channel)) \
+ ; \
+ else \
+ for (_rx_queue = &(_channel)->rx_queue; \
+ _rx_queue; \
+ _rx_queue = NULL)
static inline struct efx_channel *
efx_rx_queue_channel(struct efx_rx_queue *rx_queue)