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| author | Dmitry Kravkov | 2014-06-26 13:31:05 +0200 |
|---|---|---|
| committer | David S. Miller | 2014-07-02 00:52:29 +0200 |
| commit | 9927b51469494d50956978b533d848748b792cef (patch) | |
| tree | 43205c1445ce98e296f9efb635c9cf9f429bc0c2 /drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | |
| parent | bnx2x: VF can report link speed (diff) | |
| download | kernel-qcow2-linux-9927b51469494d50956978b533d848748b792cef.tar.gz kernel-qcow2-linux-9927b51469494d50956978b533d848748b792cef.tar.xz kernel-qcow2-linux-9927b51469494d50956978b533d848748b792cef.zip | |
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: 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>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnx2x/bnx2x.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h index faf262a0d6c4..ce8f86966c11 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h @@ -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 * |