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net: Introduce netif_xmit_timeout_ms() helper

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Introduce a new helper function netif_xmit_timeout_ms() to check
if a TX queue is stopped and has timed out and report the timeout
duration. This makes the timeout logic reusable, and will be used
in several places in subsequent patches.

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/1768209383-1546791-2-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 11:16:21 +02:00 committed by Paolo Abeni
parent cc75d43783
commit cfbc8b6bab
1 changed files with 11 additions and 0 deletions
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11
include/net/netdev_queues.h
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@ -310,6 +310,17 @@ static inline void netif_subqueue_sent(const struct net_device *dev,
netdev_tx_sent_queue(txq, bytes);
}
static inline unsigned int netif_xmit_timeout_ms(struct netdev_queue *txq)
{
unsigned long trans_start = READ_ONCE(txq->trans_start);
if (netif_xmit_stopped(txq) &&
time_after(jiffies, trans_start + txq->dev->watchdog_timeo))
return jiffies_to_msecs(jiffies - trans_start);
return 0;
}
#define netif_subqueue_maybe_stop(dev, idx, get_desc, stop_thrs, start_thrs) \
({ \
struct netdev_queue *_txq; \