Author: hselasky
Date: Thu Sep 6 12:19:36 2018
New Revision: 338490
URL: https://svnweb.freebsd.org/changeset/base/338490
Log:
Don't stall transmit queue on drops in mlx5en(4).
When a transmitted packet is dropped don't stall the transmit queue.
MFC after: 3 days
Approved by: re (marius)
Sponsored by: Mellanox Technologies
Modified:
head/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c
Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Thu Sep 6 11:06:07 2018
(r338489)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Thu Sep 6 12:19:36 2018
(r338490)
@@ -528,13 +528,11 @@ mlx5e_xmit_locked(struct ifnet *ifp, struct mlx5e_sq *
/* Process the queue */
while ((next = drbr_peek(ifp, sq->br)) != NULL) {
if (mlx5e_sq_xmit(sq, &next) != 0) {
- if (next == NULL) {
- drbr_advance(ifp, sq->br);
- } else {
+ if (next != NULL) {
drbr_putback(ifp, sq->br, next);
atomic_store_rel_int(&sq->queue_state,
MLX5E_SQ_FULL);
+ break;
}
- break;
}
drbr_advance(ifp, sq->br);
}
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