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authorViacheslav Ovsiienko <viacheslavo@mellanox.com>2019-07-21 14:56:40 +0000
committerFerruh Yigit <ferruh.yigit@intel.com>2019-07-23 14:31:36 +0200
commitfa2e14d4921a2c4a1268231e72ccd73d1e7e58fc (patch)
tree97434700561cc9cf19bce71f8566b0cda2125400 /drivers/net/mlx5/mlx5_ethdev.c
parentcb9cb61e547b50552c82151b9a4aeefd5acda796 (diff)
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net/mlx5: cache associated network device index
The associated device index is retrieved via Netlink request to underlying Infiniband device driver. This network device index is permanent throughout the lifetime of device. We do not spawn the rte_eth_dev ports without associated network device, and if network device is being unbound we get the remove notification message and rte_eth_dev port is also detached. So, we may store the ifindex in mlx5_device_spawn() routine at rte_eth_dev port creation and initialization time and use the cached value further instead of doing actual Netlink request. Reported-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com> Acked-by: Yongseok Koh <yskoh@mellanox.com>
Diffstat (limited to 'drivers/net/mlx5/mlx5_ethdev.c')
-rw-r--r--drivers/net/mlx5/mlx5_ethdev.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 6c9bcf1..dfd9e97 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -225,10 +225,7 @@ mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
assert(priv);
assert(priv->sh);
- ifindex = priv->nl_socket_rdma >= 0 ?
- mlx5_nl_ifindex(priv->nl_socket_rdma,
- priv->sh->ibdev_name,
- priv->ibv_port) : 0;
+ ifindex = mlx5_ifindex(dev);
if (!ifindex) {
if (!priv->representor)
return mlx5_get_master_ifname(priv->sh->ibdev_path,
@@ -299,14 +296,14 @@ mlx5_get_ifname_base(const struct rte_eth_dev *base,
unsigned int
mlx5_ifindex(const struct rte_eth_dev *dev)
{
- char ifname[IF_NAMESIZE];
+ struct mlx5_priv *priv = dev->data->dev_private;
unsigned int ifindex;
- if (mlx5_get_ifname(dev, &ifname))
- return 0;
- ifindex = if_nametoindex(ifname);
+ assert(priv);
+ assert(priv->if_index);
+ ifindex = priv->if_index;
if (!ifindex)
- rte_errno = errno;
+ rte_errno = ENXIO;
return ifindex;
}
@@ -641,7 +638,6 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
unsigned int max;
- char ifname[IF_NAMESIZE];
/* FIXME: we should ask the device for these values. */
info->min_rx_bufsize = 32;
@@ -662,8 +658,7 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
info->rx_queue_offload_capa);
info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
- if (mlx5_get_ifname(dev, &ifname) == 0)
- info->if_index = if_nametoindex(ifname);
+ info->if_index = mlx5_ifindex(dev);
info->reta_size = priv->reta_idx_n ?
priv->reta_idx_n : config->ind_table_max_size;
info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;