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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 , linux-kernel@vger.kernel.org, Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , Wong Vee Khee , Michael Sit Wei Hong , Jacob Keller Subject: [PATCH v2 net-next 02/12] net: mscc: ocelot: add support for mqprio offload Date: Sun, 19 Feb 2023 15:52:58 +0200 Message-Id: <20230219135309.594188-3-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230219135309.594188-1-vladimir.oltean@nxp.com> References: <20230219135309.594188-1-vladimir.oltean@nxp.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: BE1P281CA0136.DEUP281.PROD.OUTLOOK.COM (2603:10a6:b10:7c::6) To VI1PR04MB5136.eurprd04.prod.outlook.com (2603:10a6:803:55::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB5136:EE_|PAXPR04MB8238:EE_ X-MS-Office365-Filtering-Correlation-Id: 46cde5f2-fa84-405b-0ae3-08db1280b527 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?aDBJSRvxdgWDK3r5GsKUMga64n1kH6m0/AV8a9MrvjS8do8AMRTbAhD5d4G9?= =?us-ascii?Q?NepEzKE+wV0CIhWZw4Pb/fA2os/JWOm+uHSl+oEj4EgHB7rAgF0Sb0Z2Gt3O?= =?us-ascii?Q?0hbAiOl3iLMGWC58Rg2wVCjmdr5f05vLLKwogZ0Ad/ChfmtBIV+9qW9+czuJ?= =?us-ascii?Q?Ou6shk0bVgyqrY2GrAg/7cnKi9eCD8O8+FDgUUDspGSvaDpM4+KE/0TqP/bf?= =?us-ascii?Q?UtlWxW3AyoQcy48INT3bZC+iCGI6p3Ngwl+cgAzgIr1xI08wpTKeiX1/ql3F?= =?us-ascii?Q?XmUJyArUc2Bdn6V2v0VCc3NFROHffmKZ+viL4eNcWjYMMw/+r1BIS8WAAcqG?= =?us-ascii?Q?f9jJdhaS58OAJtJkH0BzOQ8fyEkop9HHxuJ3NtpICNdTXDEVfu+v/d4RNtme?= =?us-ascii?Q?NslVDKqDNxTHd8eMmNbhpPFYqR299Gh8zvlbZVQDx+MX3iMwl17zQ4fRib5o?= =?us-ascii?Q?+NGe5fTrjFUgPTqxhg9NbIcm8GKGiB4PuZko1cqAO86oejVorXBH6zTK0eM5?= =?us-ascii?Q?6PP8KJQQKp7W/pdMojKCUjQWpa5EIg90EElId/vBirg7tPtznQQeTOh1ZpVk?= =?us-ascii?Q?X38Rk6ThLA992+NdkJ5QXKlVdLHFOzx/LYEHUgaDaoON1M8SVXAulJ2QxKEA?= =?us-ascii?Q?d3dGJvC+YOZE/EFyLkyDBa3Bz+RVG54xu6N/o1TWq0OiWNGpj4XPu8NbqbXx?= =?us-ascii?Q?FF/ReJeelnqmv6Iq4IlB25+Qk9jgTxygrKFL2n3lyD+TTHMU6HhBEoccWq3s?= =?us-ascii?Q?b4dMa2R1OcCFnjnfvJkg/UInGf6ygDl6E3/zx+JzJRvIMN41f/5qQaoLHlNH?= =?us-ascii?Q?RpOv7BeLKnFr7Ve/zIYtIuO52pDj+iFjgqP1JP8fV9fj0CjNO+HkskQ5G84h?= =?us-ascii?Q?LHUJpyrdFkfr8kM/PHl0pt5K6tXHU0M9ej9zY2fVjF24pYssi9ti5WAzZn6m?= =?us-ascii?Q?ru98YQ939ZHYps2hrRLi4szfa9xhQYpvD8IC1jJsqOs1mZEBtWXiCOAJ+WGZ?= =?us-ascii?Q?4Wxg8Z7d2FlTpgd1F8pJcSWRFflZYWkvKjmopFFWrclIvSdHZ2F9cIw62F6a?= =?us-ascii?Q?MvTzJIJTei9EbvRiIR4RBm3jen6QzJRoy4n8ayLmf8aNe4syrjjrT9PSSu+f?= =?us-ascii?Q?lE6E90XzJ7xeuOn+uk194AXuiLOF/+inr0XvFVGPF+4HP2blI4erjjgGtyJ3?= =?us-ascii?Q?3H6iUukOJ/OOzRFkgq3BxT08a2mKNFJHqGBqc0hSNzeVJQcEHrtNyFVSIU9T?= =?us-ascii?Q?QYUNOPNFB7jwh6L60fKHEkZRuzidP3TziVkgkSssUO+KCFvTRhdwkQhDYcA2?= =?us-ascii?Q?yzFudo3CobQQugJT/ynAApOKugdlyhXl/uBbnrSzmqc58I/X+XVKoIVptKvS?= =?us-ascii?Q?JP8MAmRhMcr9sdHA3Hg5tQvi8eBQddZn4TG65o1iGJtSbw8j/53X7C6hlWFp?= =?us-ascii?Q?dRw97BF83mf74woYmIYhFvj/LrLNn6M5/I4rpJeMDFDXzuMFQIuvVbQDoy7x?= =?us-ascii?Q?EASe9VgTJ12A1tkamqyyqOexe8wT5tLBJHsunB/RM79mSHCXW0/8vLQFgK23?= =?us-ascii?Q?2swJEihfXQ8EEnYLvpC5UCrbZHjuVp076nCDsmacBtquUjfGfJ4GJh31QBRD?= =?us-ascii?Q?ZA=3D=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 46cde5f2-fa84-405b-0ae3-08db1280b527 X-MS-Exchange-CrossTenant-AuthSource: VI1PR04MB5136.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Feb 2023 13:53:40.9280 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: t5sjtOhkCTOpNmIJ+tlzZ3nKNBkWshgBHM5aJb1sXWvo785rgi8bHotH7i+L6ZjERx3dLCKM/rAnvbddid9WBg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAXPR04MB8238 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This doesn't apply anything to hardware and in general doesn't do anything that the software variant doesn't do, except for checking that there isn't more than 1 TXQ per TC (TXQs for a DSA switch are a dubious concept anyway). 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 --- v1->v2: none drivers/net/dsa/ocelot/felix_vsc9959.c | 9 +++++ drivers/net/ethernet/mscc/ocelot.c | 48 ++++++++++++++++++++++++++ include/soc/mscc/ocelot.h | 4 +++ 3 files changed, 61 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..20557a9c46e6 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 +2603,53 @@ 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 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) { + netdev_err(dev, "Only one TXQ per TC supported\n"); + 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, -- 2.34.1