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| author | Feras Daoud <ferasda@mellanox.com> | 2018-07-15 13:59:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-06 16:18:19 +0200 |
| commit | 1c83fc5eeecc322cb7e1b3c05703a3c0f88cfed6 (patch) | |
| tree | b158a690ab7fffaaf2c90cae955cdac2ccc74bb9 | |
| parent | e4cecd1c061143d090ad39cdf06784c36bafd69d (diff) | |
| download | linux-stable-1c83fc5eeecc322cb7e1b3c05703a3c0f88cfed6.tar.gz linux-stable-1c83fc5eeecc322cb7e1b3c05703a3c0f88cfed6.tar.bz2 linux-stable-1c83fc5eeecc322cb7e1b3c05703a3c0f88cfed6.zip | |
net/mlx5e: IPoIB, Set the netdevice sw mtu in ipoib enhanced flow
[ Upstream commit 8e1d162d8e81838119de18b4ca1e302ce906f2a6 ]
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: 472a1e44b349 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c index af3bb2f7a504..b7c21eb21a21 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c @@ -76,6 +76,7 @@ void mlx5i_init(struct mlx5_core_dev *mdev, void *ppriv) { struct mlx5e_priv *priv = mlx5i_epriv(netdev); + u16 max_mtu; /* priv init */ priv->mdev = mdev; @@ -84,6 +85,9 @@ void mlx5i_init(struct mlx5_core_dev *mdev, priv->ppriv = ppriv; 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, profile->max_nch(mdev), netdev->mtu); mlx5i_build_nic_params(mdev, &priv->channels.params); |