Author: hselasky
Date: Thu Nov 7 13:12:38 2019
New Revision: 354440
URL: https://svnweb.freebsd.org/changeset/base/354440
Log:
Check CSUM_SND_TAG flag before classifying packet has having a send
tag in mlx5en(4). This fixes an issue with packets being dropped when
doing packet forwarding, because the rcvif field is still set. The
send tag pointer and rcvif field share the same memory location.
This is a direct commit.
Reported by: olivier@
Sponsored by: Mellanox Technologies
Modified:
stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c
Modified: stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c
==============================================================================
--- stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Thu Nov 7 13:01:09 2019
(r354439)
+++ stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Thu Nov 7 13:12:38 2019
(r354440)
@@ -609,7 +609,8 @@ mlx5e_xmit(struct ifnet *ifp, struct mbuf *mb)
struct mlx5e_sq *sq;
int ret;
- if (mb->m_pkthdr.snd_tag != NULL) {
+ if ((mb->m_pkthdr.csum_flags & CSUM_SND_TAG) != 0 &&
+ (mb->m_pkthdr.snd_tag != NULL)) {
sq = mlx5e_select_queue_by_send_tag(ifp, mb);
if (unlikely(sq == NULL)) {
/* Check for route change */
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