Commit fd5a6a71 authored by Rohan G Thomas's avatar Rohan G Thomas Committed by David S. Miller
Browse files

net: stmmac: est: Per Tx-queue error count for HLBF 



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: default avatarRohan G Thomas <rohan.g.thomas@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c5c3e1bf

drivers/net/ethernet/stmicro/stmmac/common.h

+1 −0
Original line number Diff line number Diff line
@@ -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];

drivers/net/ethernet/stmicro/stmmac/stmmac_est.c

+6 −0
Original line number Diff line number Diff line
@@ -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);