diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2015-04-14 12:07:56 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-04-14 14:57:10 -0400 |
| commit | 4b62dce450e2447146ff6924a1ce8ad1a6592107 (patch) | |
| tree | 118cff26acaebcfe3fdb2918b1dbc9e43f71c049 /drivers/net/ethernet/broadcom/bgmac.h | |
| parent | eb64e2923a886441c7b322f138b36029f3fa6a36 (diff) | |
bgmac: set received skb headroom to NET_SKB_PAD
A packet buffer offset of 30 bytes is inefficient, because the first 2
bytes end up in a different cacheline.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bgmac.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bgmac.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h index abd50d128e6c..3db0d5211c5d 100644 --- a/drivers/net/ethernet/broadcom/bgmac.h +++ b/drivers/net/ethernet/broadcom/bgmac.h @@ -360,9 +360,11 @@ #define BGMAC_RX_HEADER_LEN 28 /* Last 24 bytes are unused. Well... */ #define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */ +#define BGMAC_RX_BUF_OFFSET (NET_SKB_PAD + NET_IP_ALIGN - \ + BGMAC_RX_FRAME_OFFSET) #define BGMAC_RX_MAX_FRAME_SIZE 1536 /* Copied from b44/tg3 */ #define BGMAC_RX_BUF_SIZE (BGMAC_RX_FRAME_OFFSET + BGMAC_RX_MAX_FRAME_SIZE) -#define BGMAC_RX_ALLOC_SIZE (SKB_DATA_ALIGN(BGMAC_RX_BUF_SIZE) + \ +#define BGMAC_RX_ALLOC_SIZE (SKB_DATA_ALIGN(BGMAC_RX_BUF_SIZE + BGMAC_RX_BUF_OFFSET) + \ SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) #define BGMAC_BFL_ENETROBO 0x0010 /* has ephy roboswitch spi */ |