net/mlx5: Enable devlink port for embedded cpu VF vports

Enable creation of a devlink port for EC VF vports.
Signed-off-by: Daniel Jurgens <danielj@nvidia.com>
Reviewed-by: William Tu <witu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/esw/devlink_port.c

@@ -18,7 +18,8 @@ static bool mlx5_esw_devlink_port_supported(struct mlx5_eswitch *esw, u16 vport_
 {
 	return vport_num == MLX5_VPORT_UPLINK ||
 	       (mlx5_core_is_ecpf(esw->dev) && vport_num == MLX5_VPORT_PF) ||
-	       mlx5_eswitch_is_vf_vport(esw, vport_num);
+	       mlx5_eswitch_is_vf_vport(esw, vport_num) ||
+	       mlx5_core_is_ec_vf_vport(esw->dev, vport_num);
 }
 
 static struct devlink_port *mlx5_esw_dl_port_alloc(struct mlx5_eswitch *esw, u16 vport_num)
@@ -56,6 +57,11 @@ static struct devlink_port *mlx5_esw_dl_port_alloc(struct mlx5_eswitch *esw, u16
 		dl_port->attrs.switch_id.id_len = ppid.id_len;
 		devlink_port_attrs_pci_vf_set(dl_port, controller_num, pfnum,
 					      vport_num - 1, external);
+	}  else if (mlx5_core_is_ec_vf_vport(esw->dev, vport_num)) {
+		memcpy(dl_port->attrs.switch_id.id, ppid.id, ppid.id_len);
+		dl_port->attrs.switch_id.id_len = ppid.id_len;
+		devlink_port_attrs_pci_vf_set(dl_port, controller_num, pfnum,
+					      vport_num - 1, false);
 	}
 	return dl_port;
 }

drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h

@@ -343,4 +343,24 @@ bool mlx5_rdma_supported(struct mlx5_core_dev *dev);
 bool mlx5_vnet_supported(struct mlx5_core_dev *dev);
 bool mlx5_same_hw_devs(struct mlx5_core_dev *dev, struct mlx5_core_dev *peer_dev);
 
+static inline u16 mlx5_core_ec_vf_vport_base(const struct mlx5_core_dev *dev)
+{
+	return MLX5_CAP_GEN_2(dev, ec_vf_vport_base);
+}
+
+static inline u16 mlx5_core_ec_sriov_enabled(const struct mlx5_core_dev *dev)
+{
+	return mlx5_core_is_ecpf(dev) && mlx5_core_ec_vf_vport_base(dev);
+}
+
+static inline bool mlx5_core_is_ec_vf_vport(const struct mlx5_core_dev *dev, u16 vport_num)
+{
+	int base_vport = mlx5_core_ec_vf_vport_base(dev);
+	int max_vport = base_vport + mlx5_core_max_ec_vfs(dev);
+
+	if (!mlx5_core_ec_sriov_enabled(dev))
+		return false;
+
+	return (vport_num >= base_vport && vport_num < max_vport);
+}
 #endif /* __MLX5_CORE_H__ */

include/linux/mlx5/driver.h

@@ -474,6 +474,7 @@ struct mlx5_core_sriov {
 	struct mlx5_vf_context	*vfs_ctx;
 	int			num_vfs;
 	u16			max_vfs;
+	u16			max_ec_vfs;
 };
 
 struct mlx5_fc_pool {
@@ -1244,6 +1245,11 @@ static inline u16 mlx5_core_max_vfs(const struct mlx5_core_dev *dev)
 	return dev->priv.sriov.max_vfs;
 }
 
+static inline u16 mlx5_core_max_ec_vfs(const struct mlx5_core_dev *dev)
+{
+	return dev->priv.sriov.max_ec_vfs;
+}
+
 static inline int mlx5_get_gid_table_len(u16 param)
 {
 	if (param > 4) {