iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/mlx5e: Don't modify CQ before it was created

Browse Source 
[ Upstream commit 2fcb92fbd04eef26dfe7e67839da6262d83d6b65 ]

Calling mlx5e_set_coalesce while the interface is down will result in
modifying CQs that don't exist.

Fixes: f62b8bb8f2d3 ('net/mlx5: Extend mlx5_core to support ConnectX-4
Ethernet functionality')
Signed-off-by: Gal Pressman <galp@mellanox.com>

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gal Pressman 2016-03-02 00:13:38 +02:00 committed by Greg Kroah-Hartman
parent 3b763fc8f0
commit 160790a044
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -422,11 +422,15 @@ static int mlx5e_set_coalesce(struct net_device *netdev,
if (!MLX5_CAP_GEN(mdev, cq_moderation))
return -ENOTSUPP;
mutex_lock(&priv->state_lock);
priv->params.tx_cq_moderation_usec = coal->tx_coalesce_usecs;
priv->params.tx_cq_moderation_pkts = coal->tx_max_coalesced_frames;
priv->params.rx_cq_moderation_usec = coal->rx_coalesce_usecs;
priv->params.rx_cq_moderation_pkts = coal->rx_max_coalesced_frames;
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
goto out;
for (i = 0; i < priv->params.num_channels; ++i) {
c = priv->channel[i];
@ -442,6 +446,8 @@ static int mlx5e_set_coalesce(struct net_device *netdev,
coal->rx_max_coalesced_frames);
}
out:
mutex_unlock(&priv->state_lock);
return 0;
}