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net/mlx5: Not returning mlx5_link_info table when speed is unknown

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Because mlx5e_link_info and mlx5e_ext_link_info have holes
e.g. Azure mlx5 reports PTYS 19. Do not return it unless speed
is retrieved successfully.

Fixes: 65a5d35571 ("net/mlx5: Refactor link speed handling with mlx5_link_info struct")
Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Li Tian <litian@redhat.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250910003732.5973-1-litian@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Li Tian
2025-09-10 08:37:32 +08:00
committed by Jakub Kicinski
parent 247981eecd
commit 5577352b55
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/mellanox/mlx5/core/port.c
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@@ -1170,7 +1170,11 @@ const struct mlx5_link_info *mlx5_port_ptys2info(struct mlx5_core_dev *mdev,
mlx5e_port_get_link_mode_info_arr(mdev, &table, &max_size,
force_legacy);
i = find_first_bit(&temp, max_size);
if (i < max_size)
/* mlx5e_link_info has holes. Check speed
* is not zero as indication of one.
*/
if (i < max_size && table[i].speed)
return &table[i];
return NULL;