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net/mlx5e: IPoIB, Set the netdevice sw mtu in ipoib enhanced flow 

After introduction of the cited commit, mlx5e_build_nic_params
receives the netdevice mtu in order to set the sw_mtu of mlx5e_params.
For enhanced IPoIB, the netdevice mtu is not set in this stage,
therefore, the initial sw_mtu equals zero. As a result, the hw_mtu
of the receive queue will be calculated incorrectly causing traffic
issues.

To fix this issue, query for port mtu before building the nic params.

Fixes: 472a1e44b3 ("net/mlx5e: Save MTU in channels params")
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Feras Daoud 2018-07-15 13:59:36 +03:00 committed by Saeed Mahameed
parent eacecf2760
commit 8e1d162d8e
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
View File

@ -76,6 +76,7 @@ void mlx5i_init(struct mlx5_core_dev *mdev,
void *ppriv) void *ppriv)
{ {
struct mlx5e_priv *priv = mlx5i_epriv(netdev); struct mlx5e_priv *priv = mlx5i_epriv(netdev);
u16 max_mtu;
/* priv init */ /* priv init */
priv->mdev = mdev; priv->mdev = mdev;
@ -84,6 +85,9 @@ void mlx5i_init(struct mlx5_core_dev *mdev,
priv->ppriv = ppriv; priv->ppriv = ppriv;
mutex_init(&priv->state_lock); mutex_init(&priv->state_lock);
mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
netdev->mtu = max_mtu;
mlx5e_build_nic_params(mdev, &priv->channels.params, mlx5e_build_nic_params(mdev, &priv->channels.params,
profile->max_nch(mdev), netdev->mtu); profile->max_nch(mdev), netdev->mtu);
mlx5i_build_nic_params(mdev, &priv->channels.params); mlx5i_build_nic_params(mdev, &priv->channels.params);