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Wed, 9 Sep 2020 04:51:11 +0000 From: Parav Pandit To: kuba@kernel.org, davem@davemloft.net, netdev@vger.kernel.org Cc: Parav Pandit , Jiri Pirko Subject: [PATCH net-next v3 4/6] devlink: Introduce external controller flag Date: Wed, 9 Sep 2020 07:50:36 +0300 Message-Id: <20200909045038.63181-5-parav@mellanox.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200909045038.63181-1-parav@mellanox.com> References: <20200825135839.106796-1-parav@mellanox.com> <20200909045038.63181-1-parav@mellanox.com> X-ClientProxiedBy: SN6PR04CA0091.namprd04.prod.outlook.com (2603:10b6:805:f2::32) To AM0PR05MB4866.eurprd05.prod.outlook.com (2603:10a6:208:c0::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from sw-mtx-036.mtx.labs.mlnx (208.176.44.194) by SN6PR04CA0091.namprd04.prod.outlook.com (2603:10b6:805:f2::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3370.16 via Frontend Transport; Wed, 9 Sep 2020 04:51:10 +0000 X-Mailer: git-send-email 2.26.2 X-Originating-IP: [208.176.44.194] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 4972d121-ae1a-4c90-578a-08d8547bf90d X-MS-TrafficTypeDiagnostic: AM0PR05MB5907: X-LD-Processed: a652971c-7d2e-4d9b-a6a4-d149256f461b,ExtAddr X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8273; 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A controller either located on same system or it can be an external controller located in host where such NIC is plugged in. Add the ability for driver to specify if a port is for external controller. Use such flag in the mlx5_core driver. An example of an external controller having VF1 of PF0 belong to controller 1. $ devlink port show pci/0000:06:00.0/2 pci/0000:06:00.0/2: type eth netdev ens2f0pf0vf1 flavour pcivf pfnum 0 vfnum 1 external true splittable false function: hw_addr 00:00:00:00:00:00 $ devlink port show pci/0000:06:00.0/2 -jp { "port": { "pci/0000:06:00.0/2": { "type": "eth", "netdev": "ens2f0pf0vf1", "flavour": "pcivf", "pfnum": 0, "vfnum": 1, "external": true, "splittable": false, "function": { "hw_addr": "00:00:00:00:00:00" } } } } Signed-off-by: Parav Pandit Reviewed-by: Jiri Pirko --- Changelog: v1->v2: - Addressed comments from Jiri and Jakub - New patch - Split 'external' attribute from 'external controller number'. - Merged mlx5_core driver to avoid compiliation break --- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 6 ++++-- include/net/devlink.h | 8 ++++++-- include/uapi/linux/devlink.h | 1 + net/core/devlink.c | 12 ++++++++++-- 4 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index e13e5d1b3eae..5b3599caa007 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -1215,11 +1215,13 @@ static int register_devlink_port(struct mlx5_core_dev *dev, struct devlink_port_attrs attrs = {}; struct netdev_phys_item_id ppid = {}; unsigned int dl_port_index = 0; + bool external; u16 pfnum; if (!is_devlink_port_supported(dev, rpriv)) return 0; + external = mlx5_core_is_ecpf_esw_manager(dev); mlx5e_rep_get_port_parent_id(rpriv->netdev, &ppid); dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev, rep->vport); pfnum = PCI_FUNC(dev->pdev->devfn); @@ -1232,12 +1234,12 @@ static int register_devlink_port(struct mlx5_core_dev *dev, } else if (rep->vport == MLX5_VPORT_PF) { memcpy(rpriv->dl_port.attrs.switch_id.id, &ppid.id[0], ppid.id_len); rpriv->dl_port.attrs.switch_id.id_len = ppid.id_len; - devlink_port_attrs_pci_pf_set(&rpriv->dl_port, pfnum); + devlink_port_attrs_pci_pf_set(&rpriv->dl_port, pfnum, external); } else if (mlx5_eswitch_is_vf_vport(dev->priv.eswitch, rpriv->rep->vport)) { memcpy(rpriv->dl_port.attrs.switch_id.id, &ppid.id[0], ppid.id_len); rpriv->dl_port.attrs.switch_id.id_len = ppid.id_len; devlink_port_attrs_pci_vf_set(&rpriv->dl_port, - pfnum, rep->vport - 1); + pfnum, rep->vport - 1, external); } return devlink_port_register(devlink, &rpriv->dl_port, dl_port_index); } diff --git a/include/net/devlink.h b/include/net/devlink.h index efff9274d248..2dad8c9151f4 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -60,19 +60,23 @@ struct devlink_port_phys_attrs { /** * struct devlink_port_pci_pf_attrs - devlink port's PCI PF attributes * @pf: Associated PCI PF number for this port. + * @external: when set, indicates if a port is for an external controller */ struct devlink_port_pci_pf_attrs { u16 pf; + u8 external:1; }; /** * struct devlink_port_pci_vf_attrs - devlink port's PCI VF attributes * @pf: Associated PCI PF number for this port. * @vf: Associated PCI VF for of the PCI PF for this port. + * @external: when set, indicates if a port is for an external controller */ struct devlink_port_pci_vf_attrs { u16 pf; u16 vf; + u8 external:1; }; /** @@ -1215,9 +1219,9 @@ void devlink_port_type_ib_set(struct devlink_port *devlink_port, void devlink_port_type_clear(struct devlink_port *devlink_port); void devlink_port_attrs_set(struct devlink_port *devlink_port, struct devlink_port_attrs *devlink_port_attrs); -void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf); +void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf, bool external); void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, - u16 pf, u16 vf); + u16 pf, u16 vf, bool external); int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, u32 size, u16 ingress_pools_count, u16 egress_pools_count, u16 ingress_tc_count, diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index cfef4245ea5a..40823ed7e05a 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -458,6 +458,7 @@ enum devlink_attr { DEVLINK_ATTR_PORT_LANES, /* u32 */ DEVLINK_ATTR_PORT_SPLITTABLE, /* u8 */ + DEVLINK_ATTR_PORT_EXTERNAL, /* u8 */ /* add new attributes above here, update the policy in devlink.c */ __DEVLINK_ATTR_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index 49e911c19881..6f5f85372721 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -526,6 +526,8 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg, if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf)) return -EMSGSIZE; + if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external)) + return -EMSGSIZE; break; case DEVLINK_PORT_FLAVOUR_PCI_VF: if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, @@ -533,6 +535,8 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg, nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf)) return -EMSGSIZE; + if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external)) + return -EMSGSIZE; break; case DEVLINK_PORT_FLAVOUR_PHYSICAL: case DEVLINK_PORT_FLAVOUR_CPU: @@ -7716,8 +7720,9 @@ EXPORT_SYMBOL_GPL(devlink_port_attrs_set); * * @devlink_port: devlink port * @pf: associated PF for the devlink port instance + * @external: indicates if the port is for an external controller */ -void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf) +void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf, bool external) { struct devlink_port_attrs *attrs = &devlink_port->attrs; int ret; @@ -7728,6 +7733,7 @@ void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf) return; attrs->pci_pf.pf = pf; + attrs->pci_pf.external = external; } EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set); @@ -7737,9 +7743,10 @@ EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set); * @devlink_port: devlink port * @pf: associated PF for the devlink port instance * @vf: associated VF of a PF for the devlink port instance + * @external: indicates if the port is for an external controller */ void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, - u16 pf, u16 vf) + u16 pf, u16 vf, bool external) { struct devlink_port_attrs *attrs = &devlink_port->attrs; int ret; @@ -7750,6 +7757,7 @@ void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, return; attrs->pci_vf.pf = pf; attrs->pci_vf.vf = vf; + attrs->pci_vf.external = external; } EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);