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authorMichael Chan <mchan@broadcom.com>2006-03-23 01:13:43 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-23 01:13:43 -0800
commit29b12174ac14f110225d6d9ebb66c30df5023baf (patch)
tree2c90b0bb6d3e6e4e7528cd381688b4413c77507b /drivers
parentf2a4f05216e95f3b8c06b858abc0fe9a77500816 (diff)
[BNX2]: Separate tx producer and consumer fields
Put the tx producer and consumer fields in separate cache lines in the device structure, similar to the VJ net channel queue structure. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/bnx2.c1
-rw-r--r--drivers/net/bnx2.h21
2 files changed, 13 insertions, 9 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 3f2eaf52d19..6ccacb5f254 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -48,6 +48,7 @@
#include <linux/workqueue.h>
#include <linux/crc32.h>
#include <linux/prefetch.h>
+#include <linux/cache.h>
#include "bnx2.h"
#include "bnx2_fw.h"
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index 60598849acd..b87925f6a22 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -3877,15 +3877,17 @@ struct bnx2 {
#define USING_MSI_FLAG 0x20
#define ASF_ENABLE_FLAG 0x40
- struct tx_bd *tx_desc_ring;
- struct sw_bd *tx_buf_ring;
- u32 tx_prod_bseq;
- u16 tx_prod;
- u16 tx_cons;
- int tx_ring_size;
-
- u16 hw_tx_cons;
- u16 hw_rx_cons;
+ /* Put tx producer and consumer fields in separate cache lines. */
+
+ u32 tx_prod_bseq __attribute__((aligned(L1_CACHE_BYTES)));
+ u16 tx_prod;
+
+ struct tx_bd *tx_desc_ring;
+ struct sw_bd *tx_buf_ring;
+ int tx_ring_size;
+
+ u16 tx_cons __attribute__((aligned(L1_CACHE_BYTES)));
+ u16 hw_tx_cons;
#ifdef BCM_VLAN
struct vlan_group *vlgrp;
@@ -3899,6 +3901,7 @@ struct bnx2 {
u32 rx_prod_bseq;
u16 rx_prod;
u16 rx_cons;
+ u16 hw_rx_cons;
u32 rx_csum;