Commit fe20fb06 authored by Raed Salem's avatar Raed Salem Committed by Greg Kroah-Hartman

net/mlx5e: FPGA, fix Innova IPsec TX offload data path performance

[ Upstream commit 82eaa1fa ]

At Innova IPsec TX offload data path a special software parser metadata
is used to pass some packet attributes to the hardware, this metadata
is passed using the Ethernet control segment of a WQE (a HW descriptor)

The cited commit might nullify this header, hence the metadata is lost,
this caused a significant performance drop during hw offloading

Fix by restoring the metadata at the Ethernet control segment in case
it was nullified.

Fixes: 37fdffb2 ("net/mlx5: WQ, fixes for fragmented WQ buffers API")
Signed-off-by: default avatarRaed Salem <>
Reviewed-by: default avatarTariq Toukan <>
Signed-off-by: default avatarSaeed Mahameed <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 0860fb3a
......@@ -387,8 +387,14 @@ netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
num_wqebbs = DIV_ROUND_UP(ds_cnt, MLX5_SEND_WQEBB_NUM_DS);
contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi);
if (unlikely(contig_wqebbs_room < num_wqebbs)) {
struct mlx5_wqe_eth_seg cur_eth = wqe->eth;
mlx5e_fill_sq_frag_edge(sq, wq, pi, contig_wqebbs_room);
mlx5e_sq_fetch_wqe(sq, &wqe, &pi);
wqe->eth = cur_eth;
/* fill wqe */
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