@@ -203,6 +203,7 @@ struct stmmac_extra_stats {
unsigned long mtl_est_btre;
unsigned long mtl_est_btrlm;
unsigned long max_sdu_txq_drop[MTL_MAX_TX_QUEUES];
+ unsigned long mtl_est_txq_hlbf[MTL_MAX_TX_QUEUES];
/* per queue statistics */
struct stmmac_txq_stats txq_stats[MTL_MAX_TX_QUEUES];
struct stmmac_rxq_stats rxq_stats[MTL_MAX_RX_QUEUES];
@@ -81,6 +81,7 @@ static void est_irq_status(struct stmmac_priv *priv, struct net_device *dev,
u32 status, value, feqn, hbfq, hbfs, btrl, btrl_max;
void __iomem *est_addr = priv->estaddr;
u32 txqcnt_mask = BIT(txqcnt) - 1;
+ int i;
status = readl(est_addr + EST_STATUS);
@@ -125,6 +126,11 @@ static void est_irq_status(struct stmmac_priv *priv, struct net_device *dev,
x->mtl_est_hlbf++;
+ for (i = 0; i < txqcnt; i++) {
+ if (feqn & BIT(i))
+ x->mtl_est_txq_hlbf[i]++;
+ }
+
/* Clear Interrupt */
writel(feqn, est_addr + EST_FRM_SZ_ERR);
Keep per Tx-queue error count on Head-Of-Line Blocking due to frame size(HLBF) error. The MAC raises HLBF error on one or more queues when none of the time Intervals of open-gates in the GCL is greater than or equal to the duration needed for frame transmission and by default drops those packets that causes HLBF error. EST_FRM_SZ_ERR register provides the One Hot encoded Queue numbers that have the Frame Size related error. Signed-off-by: Rohan G Thomas <rohan.g.thomas@intel.com> --- drivers/net/ethernet/stmicro/stmmac/common.h | 1 + drivers/net/ethernet/stmicro/stmmac/stmmac_est.c | 6 ++++++ 2 files changed, 7 insertions(+)