net/mlx5: fix multi-process port ID

The device port_id is used for inter-process communication and must
be the same both for primary and secondary process

This IPC port_id was configured with the invalid temporary value in
port spawn routine. This temporary value was used by the function
rte_eth_dev_get_port_by_name() to check whether the port exists.

This commit corrects the mp port_id with rte_eth_dev port_id.

Fixes: 2eb4d0107acc ("net/mlx5: refactor PCI probing on Linux")
Cc: stable@dpdk.org
Signed-off-by: Suanming Mou <suanmingm@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 7efa7c6..a8cc5f3 100644 (file)
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -930,8 +930,6 @@ err_secondary:
        priv->dev_port = spawn->phys_port;
        priv->pci_dev = spawn->pci_dev;
        priv->mtu = RTE_ETHER_MTU;
-       priv->mp_id.port_id = port_id;
-       strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
        /* Some internal functions rely on Netlink sockets, open them now. */
        priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
        priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
@@ -1347,6 +1345,8 @@ err_secondary:
                eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
                eth_dev->data->representor_id = priv->representor_id;
        }
+       priv->mp_id.port_id = eth_dev->data->port_id;
+       strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
        /*
         * Store associated network device interface index. This index
         * is permanent throughout the lifetime of device. So, we may store