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net: stmmac: Report taprio offload status

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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: Rohan G Thomas <rohan.g.thomas@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rohan G Thomas 2024-01-27 12:04:43 +08:00 committed by David S. Miller
parent fd5a6a7131
commit 5ca63ffdb9
1 changed files with 58 additions and 4 deletions
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60
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
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@ -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) struct tc_taprio_qopt_offload *qopt)
{ {
u32 size, wid = priv->dma_cap.estwid, dep = priv->dma_cap.estdep; 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) if (qopt->cmd == TAPRIO_CMD_DESTROY)
goto disable; goto disable;
else if (qopt->cmd != TAPRIO_CMD_REPLACE)
return -EOPNOTSUPP;
if (qopt->num_entries >= dep) if (qopt->num_entries >= dep)
return -EINVAL; return -EINVAL;
@ -1102,6 +1100,11 @@ disable:
priv->plat->est->enable = false; priv->plat->est->enable = false;
stmmac_est_configure(priv, priv, priv->plat->est, stmmac_est_configure(priv, priv, priv->plat->est,
priv->plat->clk_ptp_rate); 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); mutex_unlock(&priv->plat->est->lock);
} }
@ -1119,6 +1122,57 @@ disable:
return ret; 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, static int tc_setup_etf(struct stmmac_priv *priv,
struct tc_etf_qopt_offload *qopt) struct tc_etf_qopt_offload *qopt)
{ {