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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Florian Fainelli , Petr Machata , Ido Schimmel , Claudiu Manoil , Alexandre Belloni , UNGLinuxDriver@microchip.com, Jamal Hadi Salim , Cong Wang , Jiri Pirko , Vlad Buslov , Simon Horman , Christian Marangi , Arun Ramadoss , =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= , linux-kernel@vger.kernel.org Subject: [PATCH v3 net-next 4/6] net: dsa: add more extack messages in dsa_user_add_cls_matchall_mirred() Date: Wed, 23 Oct 2024 16:52:49 +0300 Message-ID: <20241023135251.1752488-5-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241023135251.1752488-1-vladimir.oltean@nxp.com> References: <20241023135251.1752488-1-vladimir.oltean@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: VI1PR10CA0105.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:803:28::34) To AM8PR04MB7779.eurprd04.prod.outlook.com (2603:10a6:20b:24b::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM8PR04MB7779:EE_|AS1PR04MB9683:EE_ X-MS-Office365-Filtering-Correlation-Id: f4638d73-ca06-4c10-5d35-08dcf36a0617 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|366016|52116014|376014|1800799024|38350700014; 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charset="utf-8" Do not leave -EOPNOTSUPP errors without an explanation. It is confusing for the user to figure out what is wrong otherwise. Signed-off-by: Vladimir Oltean --- v1->v3: none net/dsa/user.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/net/dsa/user.c b/net/dsa/user.c index c398a4479b36..2fead3a4fa84 100644 --- a/net/dsa/user.c +++ b/net/dsa/user.c @@ -1377,11 +1377,17 @@ dsa_user_add_cls_matchall_mirred(struct net_device = *dev, struct dsa_port *to_dp; int err; =20 - if (cls->common.protocol !=3D htons(ETH_P_ALL)) + if (cls->common.protocol !=3D htons(ETH_P_ALL)) { + NL_SET_ERR_MSG_MOD(extack, + "Can only offload \"protocol all\" matchall filter"); return -EOPNOTSUPP; + } =20 - if (!ds->ops->port_mirror_add) + if (!ds->ops->port_mirror_add) { + NL_SET_ERR_MSG_MOD(extack, + "Switch does not support mirroring operation"); return -EOPNOTSUPP; + } =20 if (!flow_action_basic_hw_stats_check(&cls->rule->action, extack)) return -EOPNOTSUPP; @@ -1488,9 +1494,13 @@ static int dsa_user_add_cls_matchall(struct net_devi= ce *dev, bool ingress) { const struct flow_action *action =3D &cls->rule->action; + struct netlink_ext_ack *extack =3D cls->common.extack; =20 - if (!flow_offload_has_one_action(action)) + if (!flow_offload_has_one_action(action)) { + NL_SET_ERR_MSG_MOD(extack, + "Cannot offload matchall filter with more than one action"); return -EOPNOTSUPP; + } =20 switch (action->entries[0].id) { case FLOW_ACTION_MIRRED: @@ -1498,6 +1508,7 @@ static int dsa_user_add_cls_matchall(struct net_devic= e *dev, case FLOW_ACTION_POLICE: return dsa_user_add_cls_matchall_police(dev, cls, ingress); default: + NL_SET_ERR_MSG_MOD(extack, "Unknown action"); break; } =20 --=20 2.43.0