[PATCH net-next v3 2/2] net: stmmac: tc: Add HLBS drop count to taprio stats
From: Rohan G Thomas via B4 Relay <devnull+rohan.g.thomas.altera.com@kernel.org>
Date: 2025-09-25 14:06:28
Also in:
b4-sent, linux-arm-kernel, lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Rohan G Thomas <redacted> 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 <redacted> Reviewed-by: Matthew Gerlach <matthew.gerlach@altera.com> --- drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 694d6ee1438197bd4434af6e9b78f022e94ff98f..97e89a604abd7a01bb8e904c38f10716e0a911c1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c@@ -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;
--
2.35.3