Commit 5ca63ffd authored by Rohan G Thomas's avatar Rohan G Thomas Committed by David S. Miller
Browse files

net: stmmac: Report taprio offload status 



Report taprio offload status. This includes per txq and global
counters of window_drops and tx_overruns.

Window_drops count include count of frames dropped because of
queueMaxSDU setting and HLBF error. Transmission overrun counter
inform the user application whether any packets are currently being
transmitted on a particular queue during a gate-close event.DWMAC IPs
takes care Transmission overrun won't happen hence this is always 0.

Signed-off-by: default avatarRohan G Thomas <rohan.g.thomas@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fd5a6a71

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

+58 −4
Original line number Diff line number Diff line
@@ -937,7 +937,7 @@ static void tc_taprio_map_maxsdu_txq(struct stmmac_priv *priv, 
	}

}



static int tc_setup_taprio(struct stmmac_priv *priv,

static int tc_taprio_configure(struct stmmac_priv *priv,

			       struct tc_taprio_qopt_offload *qopt)

{

	u32 size, wid = priv->dma_cap.estwid, dep = priv->dma_cap.estdep;
@@ -990,8 +990,6 @@ static int tc_setup_taprio(struct stmmac_priv *priv, 


	if (qopt->cmd == TAPRIO_CMD_DESTROY)

		goto disable;

	else if (qopt->cmd != TAPRIO_CMD_REPLACE)

		return -EOPNOTSUPP;



	if (qopt->num_entries >= dep)

		return -EINVAL;
@@ -1102,6 +1100,11 @@ static int tc_setup_taprio(struct stmmac_priv *priv, 
		priv->plat->est->enable = false;

		stmmac_est_configure(priv, priv, priv->plat->est,

				     priv->plat->clk_ptp_rate);

		/* Reset taprio status */

		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;

		}

		mutex_unlock(&priv->plat->est->lock);

	}
@@ -1119,6 +1122,57 @@ static int tc_setup_taprio(struct stmmac_priv *priv, 
	return ret;

}



static void tc_taprio_stats(struct stmmac_priv *priv,

			    struct tc_taprio_qopt_offload *qopt)

{

	u64 window_drops = 0;

	int i = 0;



	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];

	qopt->stats.window_drops = window_drops;



	/* Transmission overrun doesn't happen for stmmac, hence always 0 */

	qopt->stats.tx_overruns = 0;

}



static void tc_taprio_queue_stats(struct stmmac_priv *priv,

				  struct tc_taprio_qopt_offload *qopt)

{

	struct tc_taprio_qopt_queue_stats *q_stats = &qopt->queue_stats;

	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];



	/* Transmission overrun doesn't happen for stmmac, hence always 0 */

	q_stats->stats.tx_overruns = 0;

}



static int tc_setup_taprio(struct stmmac_priv *priv,

			   struct tc_taprio_qopt_offload *qopt)

{

	int err = 0;



	switch (qopt->cmd) {

	case TAPRIO_CMD_REPLACE:

	case TAPRIO_CMD_DESTROY:

		err = tc_taprio_configure(priv, qopt);

		break;

	case TAPRIO_CMD_STATS:

		tc_taprio_stats(priv, qopt);

		break;

	case TAPRIO_CMD_QUEUE_STATS:

		tc_taprio_queue_stats(priv, qopt);

		break;

	default:

		err = -EOPNOTSUPP;

	}



	return err;

}



static int tc_setup_etf(struct stmmac_priv *priv,

			struct tc_etf_qopt_offload *qopt)

{