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net/mlx5e: Refine TX timeout handling to skip non-timed-out SQ

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mlx5e_tx_timeout_work() is invoked when the dev_watchdog reports a
timed-out TX queue. Currently, the recovery flow is triggered for all
stopped SQs, which is not always correct — some SQs may be temporarily
stopped without actually timing out. Attempting to recover such SQs
results in no EQE being polled (since no real timeout occurred), which
the driver misinterprets as a recovery failure, unnecessarily causing
channel reopening.

Improve the logic to initiate recovery only for SQs that are both
stopped and timed out. Utilize the helper introduced in the previous
patch to determine whether the netdevice watchdog timeout period has
elapsed since the SQ’s last transmit timestamp.

Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Reviewed-by: Yael Chemla <ychemla@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1768209383-1546791-4-git-send-email-tariqt@nvidia.com
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Shahar Shitrit 2026-01-12 11:16:23 +02:00 committed by Paolo Abeni
parent 3ae02d6597
commit b0ba734516
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
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@ -5137,7 +5137,7 @@ static void mlx5e_tx_timeout_work(struct work_struct *work)
netdev_get_tx_queue(netdev, i);
struct mlx5e_txqsq *sq = priv->txq2sq[i];
if (!netif_xmit_stopped(dev_queue))
if (!netif_xmit_timeout_ms(dev_queue))
continue;
if (mlx5e_reporter_tx_timeout(sq))