summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMaxim Mikityanskiy <maximmi@nvidia.com>2022-01-26 16:49:23 +0300
committerSaeed Mahameed <saeedm@nvidia.com>2022-03-17 21:51:54 +0300
commitc3cce0fff3a3be0372caa4821be58fc7cefaeb3c (patch)
treeaa7812bf7ec7501c3e4f4a0c780283c9886e6478
parent7c3b4df594b6c51c1fc95e6fd9f949bdddff34b5 (diff)
downloadlinux-c3cce0fff3a3be0372caa4821be58fc7cefaeb3c.tar.xz
net/mlx5e: Add headroom only to the first fragment in legacy RQ
Currently, rq->buff.headroom is applied to all fragments in legacy RQ. In the linear mode, there is a non-zero headroom, but there is only one fragment per packet. In the non-linear mode, the headroom is zero. This commit changes the logic to apply the headroom only to the first fragment. The current behavior remains the same for both linear and non-linear modes. However, it allows the next commit to enable headroom for the non-linear mode, which will be applied only to the first fragment. Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_rx.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 074a44b281b6..6eda906342c0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -373,12 +373,15 @@ static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe_cyc *wqe,
int i;
for (i = 0; i < rq->wqe.info.num_frags; i++, frag++) {
+ u16 headroom;
+
err = mlx5e_get_rx_frag(rq, frag);
if (unlikely(err))
goto free_frags;
+ headroom = i == 0 ? rq->buff.headroom : 0;
wqe->data[i].addr = cpu_to_be64(frag->di->addr +
- frag->offset + rq->buff.headroom);
+ frag->offset + headroom);
}
return 0;