linux-kernel - [net-next,v1] net: stmmac: support for tc mqprio offload

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Date:   Sat, 28 Mar 2020 09:14:14 +0800
From:   Xiaoliang Yang <xiaoliang.yang_1@....com>
To:     xiaoliang.yang_1@....com, Jose.Abreu@...opsys.com,
        davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, olteanv@...il.com,
        ivan.khoronzhuk@...aro.org, alexandre.belloni@...tlin.com,
        andrew@...n.ch, vivien.didelot@...il.com, po.liu@....com,
        leoyang.li@....com
Subject: [net-next,v1] net: stmmac: support for tc mqprio offload

This patch add support for tc mqprio offload to configure multiple
prioritized TX traffic classes with mqprio.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@....com>
---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c   | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 0e8c80f23557..b9dcd109a282 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4214,6 +4214,21 @@ static int stmmac_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 
 static LIST_HEAD(stmmac_block_cb_list);
 
+static int stmmac_tc_setup_mqprio(struct net_device *ndev, void *type_data)
+{
+	struct tc_mqprio_qopt *mqprio = type_data;
+	u8 num_tc;
+	int i;
+
+	num_tc = mqprio->num_tc;
+	netif_set_real_num_tx_queues(ndev, num_tc);
+	netdev_set_num_tc(ndev, num_tc);
+	for (i = 0; i < num_tc; i++)
+		netdev_set_tc_queue(ndev, i, 1, i);
+
+	return 0;
+}
+
 static int stmmac_setup_tc(struct net_device *ndev, enum tc_setup_type type,
 			   void *type_data)
 {
@@ -4229,6 +4244,8 @@ static int stmmac_setup_tc(struct net_device *ndev, enum tc_setup_type type,
 		return stmmac_tc_setup_cbs(priv, priv, type_data);
 	case TC_SETUP_QDISC_TAPRIO:
 		return stmmac_tc_setup_taprio(priv, priv, type_data);
+	case TC_SETUP_QDISC_MQPRIO:
+		return stmmac_tc_setup_mqprio(ndev, type_data);
 	case TC_SETUP_QDISC_ETF:
 		return stmmac_tc_setup_etf(priv, priv, type_data);
 	default:
-- 
2.17.1