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Commit 9927b514 authored by Dmitry Kravkov's avatar Dmitry Kravkov Committed by David S. Miller
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bnx2x: enlarge minimal alignemnt of data offset 



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: default avatarDmitry Kravkov <Dmitry.Kravkov@qlogic.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarAriel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6495d15a

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

+4 −2
Original line number Diff line number Diff line
@@ -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

	 *