korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-29 23:24:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

mlx4_en: Remove FCS bytes from packet length.

Browse Source 
When HW doesn't remove FCS bytes they are reported in the completion
byte count, we don't need to take them to skb.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yevgeny Petrilin 2011-11-14 14:25:36 -05:00 committed by David S. Miller
parent 06236ac372
commit 4a5f4dd859
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/mellanox/mlx4/en_rx.c
View File

@ -581,6 +581,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
* Packet is OK - process it.
*/
length = be32_to_cpu(cqe->byte_cnt);
length -= ring->fcs_del;
ring->bytes += length;
ring->packets++;
@ -813,8 +814,11 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, int qpn,
context->db_rec_addr = cpu_to_be64(ring->wqres.db.dma);
/* Cancel FCS removal if FW allows */
if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) {
context->param3 |= cpu_to_be32(1 << 29);
ring->fcs_del = ETH_FCS_LEN;
} else
ring->fcs_del = 0;
err = mlx4_qp_to_ready(mdev->dev, &ring->wqres.mtt, context, qp, state);
if (err) {

1
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
View File

@ -272,6 +272,7 @@ struct mlx4_en_rx_ring {
u32 prod;
u32 cons;
u32 buf_size;
u8 fcs_del;
void *buf;
void *rx_info;
unsigned long bytes;