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| author | Maxim Mikityanskiy <maximmi@nvidia.com> | 2021-10-11 18:39:35 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2021-10-12 23:52:03 +0300 |
| commit | 84c8a87402cf073ba7948dd62d4815a3f4a224c8 (patch) | |
| tree | 6ec2706ef59b7ef549657ef58d36a08fd9a4981b | |
| parent | 0bc73ad46a76ed6ece4dcacb28858e7b38561e1c (diff) | |
| download | linux-84c8a87402cf073ba7948dd62d4815a3f4a224c8.tar.xz | |
net/mlx5e: Fix division by 0 in mlx5e_select_queue for representors
Commit 846d6da1fcdb ("net/mlx5e: Fix division by 0 in
mlx5e_select_queue") makes mlx5e_build_nic_params assign a non-zero
initial value to priv->num_tc_x_num_ch, so that mlx5e_select_queue
doesn't fail with division by 0 if called before the first activation of
channels. However, the initialization flow of representors doesn't call
mlx5e_build_nic_params, so this bug can still happen with representors.
This commit fixes the bug by adding the missing assignment to
mlx5e_build_rep_params.
Fixes: 846d6da1fcdb ("net/mlx5e: Fix division by 0 in mlx5e_select_queue")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 0439203fc7d9..0684ac6699b2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -618,6 +618,11 @@ static void mlx5e_build_rep_params(struct net_device *netdev) params->mqprio.num_tc = 1; params->tunneled_offload_en = false; + /* Set an initial non-zero value, so that mlx5e_select_queue won't + * divide by zero if called before first activating channels. + */ + priv->num_tc_x_num_ch = params->num_channels * params->mqprio.num_tc; + mlx5_query_min_inline(mdev, ¶ms->tx_min_inline_mode); } |