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net: stmmac: tc: Add HLBS drop count to taprio stats

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Add the count of the frames dropped by Head-Of-Line Blocking due to
Scheduling(HLBS) error to taprio window drop count stats.

Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altera.com>
Reviewed-by: Furong Xu <0x1207@gmail.com>
Link: https://patch.msgid.link/20250925-hlbs_2-v3-2-3b39472776c2@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Rohan G Thomas 2025-09-25 22:06:14 +08:00 committed by Jakub Kicinski
parent 7ce48d4974
commit de17376cad
1 changed files with 5 additions and 2 deletions
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7
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
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@ -1080,6 +1080,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
for (i = 0; i < priv->plat->tx_queues_to_use; i++) {
priv->xstats.max_sdu_txq_drop[i] = 0;
priv->xstats.mtl_est_txq_hlbf[i] = 0;
priv->xstats.mtl_est_txq_hlbs[i] = 0;
}
mutex_unlock(&priv->est_lock);
}
@ -1097,7 +1098,8 @@ static void tc_taprio_stats(struct stmmac_priv *priv,
for (i = 0; i < priv->plat->tx_queues_to_use; i++)
window_drops += priv->xstats.max_sdu_txq_drop[i] +
priv->xstats.mtl_est_txq_hlbf[i];
priv->xstats.mtl_est_txq_hlbf[i] +
priv->xstats.mtl_est_txq_hlbs[i];
qopt->stats.window_drops = window_drops;
/* Transmission overrun doesn't happen for stmmac, hence always 0 */
@ -1111,7 +1113,8 @@ static void tc_taprio_queue_stats(struct stmmac_priv *priv,
int queue = qopt->queue_stats.queue;
q_stats->stats.window_drops = priv->xstats.max_sdu_txq_drop[queue] +
priv->xstats.mtl_est_txq_hlbf[queue];
priv->xstats.mtl_est_txq_hlbf[queue] +
priv->xstats.mtl_est_txq_hlbs[queue];
/* Transmission overrun doesn't happen for stmmac, hence always 0 */
q_stats->stats.tx_overruns = 0;