[PATCH net-next v1 3/5] net: stmmac: support fp parameter of tc-taprio
From: Furong Xu <hidden>
Date: 2024-07-31 10:44:19
Also in:
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
tc-taprio can select whether traffic classes are express or preemptible.
After some traffic tests, MAC merge layer statistics are all good.
Local device:
ethtool --include-statistics --json --show-mm eth1
[ {
"ifname": "eth1",
"pmac-enabled": true,
"tx-enabled": true,
"tx-active": true,
"tx-min-frag-size": 60,
"rx-min-frag-size": 60,
"verify-enabled": true,
"verify-time": 100,
"max-verify-time": 128,
"verify-status": "SUCCEEDED",
"statistics": {
"MACMergeFrameAssErrorCount": 0,
"MACMergeFrameSmdErrorCount": 0,
"MACMergeFrameAssOkCount": 0,
"MACMergeFragCountRx": 0,
"MACMergeFragCountTx": 1398,
"MACMergeHoldCount": 15783
}
} ]
Remote device:
ethtool --include-statistics --json --show-mm eth1
[ {
"ifname": "eth1",
"pmac-enabled": true,
"tx-enabled": true,
"tx-active": true,
"tx-min-frag-size": 60,
"rx-min-frag-size": 60,
"verify-enabled": true,
"verify-time": 100,
"max-verify-time": 128,
"verify-status": "SUCCEEDED",
"statistics": {
"MACMergeFrameAssErrorCount": 0,
"MACMergeFrameSmdErrorCount": 0,
"MACMergeFrameAssOkCount": 1388,
"MACMergeFragCountRx": 1398,
"MACMergeFragCountTx": 0,
"MACMergeHoldCount": 0
}
} ]
Tested on DWMAC CORE 5.10a
Signed-off-by: Furong Xu <redacted>
---
.../net/ethernet/stmicro/stmmac/stmmac_tc.c | 34 ++-----------------
1 file changed, 3 insertions(+), 31 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 494fe2f68300..eeb5eb453b98 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c@@ -943,7 +943,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv, u32 size, wid = priv->dma_cap.estwid, dep = priv->dma_cap.estdep; struct timespec64 time, current_time, qopt_time; ktime_t current_time_ns; - bool fpe = false; int i, ret = 0; u64 ctr;
@@ -1028,16 +1027,6 @@ static int tc_taprio_configure(struct stmmac_priv *priv, switch (qopt->entries[i].command) { case TC_TAPRIO_CMD_SET_GATES: - if (fpe) - return -EINVAL; - break; - case TC_TAPRIO_CMD_SET_AND_HOLD: - gates |= BIT(0); - fpe = true; - break; - case TC_TAPRIO_CMD_SET_AND_RELEASE: - gates &= ~BIT(0); - fpe = true; break; default: return -EOPNOTSUPP;
@@ -1068,16 +1057,11 @@ static int tc_taprio_configure(struct stmmac_priv *priv, tc_taprio_map_maxsdu_txq(priv, qopt); - if (fpe && !priv->dma_cap.fpesel) { + if (qopt->mqprio.preemptible_tcs && !priv->dma_cap.fpesel) { mutex_unlock(&priv->est_lock); return -EOPNOTSUPP; } - /* Actual FPE register configuration will be done after FPE handshake - * is success. - */ - priv->plat->fpe_cfg->enable = fpe; - ret = stmmac_est_configure(priv, priv, priv->est, priv->plat->clk_ptp_rate); mutex_unlock(&priv->est_lock);
@@ -1088,10 +1072,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv, netdev_info(priv->dev, "configured EST\n"); - if (fpe) { - stmmac_fpe_handshake(priv, true); - netdev_info(priv->dev, "start FPE handshake\n"); - } + stmmac_fpe_set_preemptible_tcs(priv, priv->ioaddr, qopt->mqprio.preemptible_tcs); return 0;
@@ -1109,16 +1090,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv, mutex_unlock(&priv->est_lock); } - priv->plat->fpe_cfg->enable = false; - stmmac_fpe_configure(priv, priv->ioaddr, - priv->plat->fpe_cfg, - priv->plat->tx_queues_to_use, - priv->plat->rx_queues_to_use, - false); - netdev_info(priv->dev, "disabled FPE\n"); - - stmmac_fpe_handshake(priv, false); - netdev_info(priv->dev, "stop FPE handshake\n"); + stmmac_fpe_set_preemptible_tcs(priv, priv->ioaddr, 0); return ret; }
--
2.34.1