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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jamal Hadi Salim , Cong Wang , Jiri Pirko , Vinicius Costa Gomes , Kurt Kanzenbach , Gerhard Engleder , Amritha Nambiar , Claudiu Manoil , Alexandre Belloni , UNGLinuxDriver@microchip.com, Andrew Lunn , Florian Fainelli , Ferenc Fejes , Xiaoliang Yang , Roger Quadros , Pranavi Somisetty , Harini Katakam , Giuseppe Cavallaro , Alexandre Torgue , Michael Sit Wei Hong , Mohammad Athari Bin Ismail , Jacob Keller , linux-kernel@vger.kernel.org, Ferenc Fejes Subject: [PATCH v3 net-next 10/13] net: mscc: ocelot: add support for mqprio offload Date: Mon, 20 Feb 2023 14:23:40 +0200 Message-Id: <20230220122343.1156614-11-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230220122343.1156614-1-vladimir.oltean@nxp.com> References: <20230220122343.1156614-1-vladimir.oltean@nxp.com> X-ClientProxiedBy: BE1P281CA0183.DEUP281.PROD.OUTLOOK.COM (2603:10a6:b10:8d::17) To VI1PR04MB5136.eurprd04.prod.outlook.com (2603:10a6:803:55::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB5136:EE_|PA4PR04MB7725:EE_ X-MS-Office365-Filtering-Correlation-Id: 973680fb-9fc1-41f6-1074-08db133d6427 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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The reason we add this is to be able to parse one more field added to struct tc_mqprio_qopt_offload, namely preemptible_tcs. Signed-off-by: Vladimir Oltean Reviewed-by: Ferenc Fejes --- v2->v3: use NL_SET_ERR_MSG_MOD() instead of netdev_err() v1->v2: none drivers/net/dsa/ocelot/felix_vsc9959.c | 9 +++++ drivers/net/ethernet/mscc/ocelot.c | 50 ++++++++++++++++++++++++++ include/soc/mscc/ocelot.h | 4 +++ 3 files changed, 63 insertions(+) diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index 354aa3dbfde7..3df71444dde1 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c @@ -1612,6 +1612,13 @@ static int vsc9959_qos_port_cbs_set(struct dsa_switch *ds, int port, static int vsc9959_qos_query_caps(struct tc_query_caps_base *base) { switch (base->type) { + case TC_SETUP_QDISC_MQPRIO: { + struct tc_mqprio_caps *caps = base->caps; + + caps->validate_queue_counts = true; + + return 0; + } case TC_SETUP_QDISC_TAPRIO: { struct tc_taprio_caps *caps = base->caps; @@ -1635,6 +1642,8 @@ static int vsc9959_port_setup_tc(struct dsa_switch *ds, int port, return vsc9959_qos_query_caps(type_data); case TC_SETUP_QDISC_TAPRIO: return vsc9959_qos_port_tas_set(ocelot, port, type_data); + case TC_SETUP_QDISC_MQPRIO: + return ocelot_port_mqprio(ocelot, port, type_data); case TC_SETUP_QDISC_CBS: return vsc9959_qos_port_cbs_set(ds, port, type_data); default: diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 08acb7b89086..8227d2027c94 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include "ocelot.h" #include "ocelot_vcap.h" @@ -2602,6 +2603,55 @@ void ocelot_port_mirror_del(struct ocelot *ocelot, int from, bool ingress) } EXPORT_SYMBOL_GPL(ocelot_port_mirror_del); +static void ocelot_port_reset_mqprio(struct ocelot *ocelot, int port) +{ + struct net_device *dev = ocelot->ops->port_to_netdev(ocelot, port); + + netdev_reset_tc(dev); +} + +int ocelot_port_mqprio(struct ocelot *ocelot, int port, + struct tc_mqprio_qopt_offload *mqprio) +{ + struct net_device *dev = ocelot->ops->port_to_netdev(ocelot, port); + struct netlink_ext_ack *extack = mqprio->extack; + struct tc_mqprio_qopt *qopt = &mqprio->qopt; + int num_tc = qopt->num_tc; + int tc, err; + + if (!num_tc) { + ocelot_port_reset_mqprio(ocelot, port); + return 0; + } + + err = netdev_set_num_tc(dev, num_tc); + if (err) + return err; + + for (tc = 0; tc < num_tc; tc++) { + if (qopt->count[tc] != 1) { + NL_SET_ERR_MSG_MOD(extack, + "Only one TXQ per TC supported"); + return -EINVAL; + } + + err = netdev_set_tc_queue(dev, tc, 1, qopt->offset[tc]); + if (err) + goto err_reset_tc; + } + + err = netif_set_real_num_tx_queues(dev, num_tc); + if (err) + goto err_reset_tc; + + return 0; + +err_reset_tc: + ocelot_port_reset_mqprio(ocelot, port); + return err; +} +EXPORT_SYMBOL_GPL(ocelot_port_mqprio); + void ocelot_init_port(struct ocelot *ocelot, int port) { struct ocelot_port *ocelot_port = ocelot->ports[port]; diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index 2080879e4134..27ff770a6c53 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -11,6 +11,8 @@ #include #include +struct tc_mqprio_qopt_offload; + /* Port Group IDs (PGID) are masks of destination ports. * * For L2 forwarding, the switch performs 3 lookups in the PGID table for each @@ -1145,6 +1147,8 @@ int ocelot_port_set_mm(struct ocelot *ocelot, int port, struct netlink_ext_ack *extack); int ocelot_port_get_mm(struct ocelot *ocelot, int port, struct ethtool_mm_state *state); +int ocelot_port_mqprio(struct ocelot *ocelot, int port, + struct tc_mqprio_qopt_offload *mqprio); #if IS_ENABLED(CONFIG_BRIDGE_MRP) int ocelot_mrp_add(struct ocelot *ocelot, int port,