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bnx2x: enlarge minimal alignemnt of data offset

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This improves the performance of driver on machine with L1_CACHE_SHIFT of at
most 32 bytes [HW was planned for 64-byte aligned fastpath data].

Signed-off-by: Dmitry Kravkov <Dmitry.Kravkov@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Kravkov 2014-06-26 14:31:05 +03:00 committed by David S. Miller
parent 6495d15a7c
commit 9927b51469
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
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@ -1508,8 +1508,10 @@ struct bnx2x {
/* TCP with Timestamp Option (32) + IPv6 (40) */
#define ETH_MAX_TPA_HEADER_SIZE 72
/* Max supported alignment is 256 (8 shift) */
#define BNX2X_RX_ALIGN_SHIFT min(8, L1_CACHE_SHIFT)
/* Max supported alignment is 256 (8 shift)
* minimal alignment shift 6 is optimal for 57xxx HW performance
*/
#define BNX2X_RX_ALIGN_SHIFT max(6, min(8, L1_CACHE_SHIFT))
/* FW uses 2 Cache lines Alignment for start packet and size
*