net/mlx5e: Register devlink ports for physical link, PCI PF, VFs

Register devlink port of physical port, PCI PF and PCI VF flavour
for each PF, VF when a given devlink instance is in switchdev mode.

Implement ndo_get_devlink_port callback API to make use of registered
devlink ports.
This eliminates ndo_get_phys_port_name() and ndo_get_port_parent_id()
callbacks. Hence, remove them.

An example output with 2 VFs, without a PF and single uplink port is
below.

$devlink port show
pci/0000:06:00.0/65535: type eth netdev ens2f0 flavour physical
pci/0000:05:00.0/1: type eth netdev eth1 flavour pcivf pfnum 0 vfnum 0
pci/0000:05:00.0/2: type eth netdev eth2 flavour pcivf pfnum 0 vfnum 1

Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 529f8e4..6810b9f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -37,6 +37,7 @@
 #include <net/act_api.h>
 #include <net/netevent.h>
 #include <net/arp.h>
+#include <net/devlink.h>
 
 #include "eswitch.h"
 #include "en.h"
@@ -1119,32 +1120,6 @@ static int mlx5e_rep_close(struct net_device *dev)
        return ret;
 }
 
-static int mlx5e_rep_get_phys_port_name(struct net_device *dev,
-                                       char *buf, size_t len)
-{
-       struct mlx5e_priv *priv = netdev_priv(dev);
-       struct mlx5e_rep_priv *rpriv = priv->ppriv;
-       struct mlx5_eswitch_rep *rep = rpriv->rep;
-       unsigned int fn;
-       int ret;
-
-       fn = PCI_FUNC(priv->mdev->pdev->devfn);
-       if (fn >= MLX5_MAX_PORTS)
-               return -EOPNOTSUPP;
-
-       if (rep->vport == MLX5_VPORT_UPLINK)
-               ret = snprintf(buf, len, "p%d", fn);
-       else if (rep->vport == MLX5_VPORT_PF)
-               ret = snprintf(buf, len, "pf%d", fn);
-       else
-               ret = snprintf(buf, len, "pf%dvf%d", fn, rep->vport - 1);
-
-       if (ret >= len)
-               return -EOPNOTSUPP;
-
-       return 0;
-}
-
 static int
 mlx5e_rep_setup_tc_cls_flower(struct mlx5e_priv *priv,
                              struct tc_cls_flower_offload *cls_flower, int flags)
@@ -1298,17 +1273,24 @@ static int mlx5e_uplink_rep_set_vf_vlan(struct net_device *dev, int vf, u16 vlan
        return 0;
 }
 
+static struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev)
+{
+       struct mlx5e_priv *priv = netdev_priv(dev);
+       struct mlx5e_rep_priv *rpriv = priv->ppriv;
+
+       return &rpriv->dl_port;
+}
+
 static const struct net_device_ops mlx5e_netdev_ops_rep = {
        .ndo_open                = mlx5e_rep_open,
        .ndo_stop                = mlx5e_rep_close,
        .ndo_start_xmit          = mlx5e_xmit,
-       .ndo_get_phys_port_name  = mlx5e_rep_get_phys_port_name,
        .ndo_setup_tc            = mlx5e_rep_setup_tc,
+       .ndo_get_devlink_port = mlx5e_get_devlink_port,
        .ndo_get_stats64         = mlx5e_rep_get_stats,
        .ndo_has_offload_stats   = mlx5e_rep_has_offload_stats,
        .ndo_get_offload_stats   = mlx5e_rep_get_offload_stats,
        .ndo_change_mtu          = mlx5e_rep_change_mtu,
-       .ndo_get_port_parent_id  = mlx5e_rep_get_port_parent_id,
 };
 
 static const struct net_device_ops mlx5e_netdev_ops_uplink_rep = {
@@ -1316,8 +1298,8 @@ static const struct net_device_ops mlx5e_netdev_ops_uplink_rep = {
        .ndo_stop                = mlx5e_close,
        .ndo_start_xmit          = mlx5e_xmit,
        .ndo_set_mac_address     = mlx5e_uplink_rep_set_mac,
-       .ndo_get_phys_port_name  = mlx5e_rep_get_phys_port_name,
        .ndo_setup_tc            = mlx5e_rep_setup_tc,
+       .ndo_get_devlink_port = mlx5e_get_devlink_port,
        .ndo_get_stats64         = mlx5e_get_stats,
        .ndo_has_offload_stats   = mlx5e_rep_has_offload_stats,
        .ndo_get_offload_stats   = mlx5e_rep_get_offload_stats,
@@ -1330,7 +1312,6 @@ static const struct net_device_ops mlx5e_netdev_ops_uplink_rep = {
        .ndo_get_vf_config       = mlx5e_get_vf_config,
        .ndo_get_vf_stats        = mlx5e_get_vf_stats,
        .ndo_set_vf_vlan         = mlx5e_uplink_rep_set_vf_vlan,
-       .ndo_get_port_parent_id  = mlx5e_rep_get_port_parent_id,
        .ndo_set_features        = mlx5e_set_features,
 };
 
@@ -1731,6 +1712,55 @@ static const struct mlx5e_profile mlx5e_uplink_rep_profile = {
        .max_tc                 = MLX5E_MAX_NUM_TC,
 };
 
+static bool
+is_devlink_port_supported(const struct mlx5_core_dev *dev,
+                         const struct mlx5e_rep_priv *rpriv)
+{
+       return rpriv->rep->vport == MLX5_VPORT_UPLINK ||
+              rpriv->rep->vport == MLX5_VPORT_PF ||
+              mlx5_eswitch_is_vf_vport(dev->priv.eswitch, rpriv->rep->vport);
+}
+
+static int register_devlink_port(struct mlx5_core_dev *dev,
+                                struct mlx5e_rep_priv *rpriv)
+{
+       struct devlink *devlink = priv_to_devlink(dev);
+       struct mlx5_eswitch_rep *rep = rpriv->rep;
+       struct netdev_phys_item_id ppid = {};
+       int ret;
+
+       if (!is_devlink_port_supported(dev, rpriv))
+               return 0;
+
+       ret = mlx5e_rep_get_port_parent_id(rpriv->netdev, &ppid);
+       if (ret)
+               return ret;
+
+       if (rep->vport == MLX5_VPORT_UPLINK)
+               devlink_port_attrs_set(&rpriv->dl_port,
+                                      DEVLINK_PORT_FLAVOUR_PHYSICAL,
+                                      PCI_FUNC(dev->pdev->devfn), false, 0,
+                                      &ppid.id[0], ppid.id_len);
+       else if (rep->vport == MLX5_VPORT_PF)
+               devlink_port_attrs_pci_pf_set(&rpriv->dl_port,
+                                             &ppid.id[0], ppid.id_len,
+                                             dev->pdev->devfn);
+       else if (mlx5_eswitch_is_vf_vport(dev->priv.eswitch, rpriv->rep->vport))
+               devlink_port_attrs_pci_vf_set(&rpriv->dl_port,
+                                             &ppid.id[0], ppid.id_len,
+                                             dev->pdev->devfn,
+                                             rep->vport - 1);
+
+       return devlink_port_register(devlink, &rpriv->dl_port, rep->vport);
+}
+
+static void unregister_devlink_port(struct mlx5_core_dev *dev,
+                                   struct mlx5e_rep_priv *rpriv)
+{
+       if (is_devlink_port_supported(dev, rpriv))
+               devlink_port_unregister(&rpriv->dl_port);
+}
+
 /* e-Switch vport representors */
 static int
 mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
@@ -1782,15 +1812,27 @@ mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
                goto err_detach_netdev;
        }
 
+       err = register_devlink_port(dev, rpriv);
+       if (err) {
+               esw_warn(dev, "Failed to register devlink port %d\n",
+                        rep->vport);
+               goto err_neigh_cleanup;
+       }
+
        err = register_netdev(netdev);
        if (err) {
                pr_warn("Failed to register representor netdev for vport %d\n",
                        rep->vport);
-               goto err_neigh_cleanup;
+               goto err_devlink_cleanup;
        }
 
+       if (is_devlink_port_supported(dev, rpriv))
+               devlink_port_type_eth_set(&rpriv->dl_port, netdev);
        return 0;
 
+err_devlink_cleanup:
+       unregister_devlink_port(dev, rpriv);
+
 err_neigh_cleanup:
        mlx5e_rep_neigh_cleanup(rpriv);
 
@@ -1813,9 +1855,13 @@ mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
        struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
        struct net_device *netdev = rpriv->netdev;
        struct mlx5e_priv *priv = netdev_priv(netdev);
+       struct mlx5_core_dev *dev = priv->mdev;
        void *ppriv = priv->ppriv;
 
+       if (is_devlink_port_supported(dev, rpriv))
+               devlink_port_type_clear(&rpriv->dl_port);
        unregister_netdev(netdev);
+       unregister_devlink_port(dev, rpriv);
        mlx5e_rep_neigh_cleanup(rpriv);
        mlx5e_detach_netdev(priv);
        if (rep->vport == MLX5_VPORT_UPLINK)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
index d4585f3..c56e6ee 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
@@ -86,6 +86,7 @@ struct mlx5e_rep_priv {
        struct mlx5_flow_handle *vport_rx_rule;
        struct list_head       vport_sqs_list;
        struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */
+       struct devlink_port dl_port;
 };
 
 static inline