Commit eb31b906 authored by Bodong Wang's avatar Bodong Wang Committed by Greg Kroah-Hartman

Revert "net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager"

[ Upstream commit 4e046de0 ]

This reverts commit 5f5991f3.

With the original commit, eswitch instance will not be initialized for
a function which is vport group manager but not eswitch manager such as
host PF on SmartNIC (BlueField) card. This will result in a kernel crash
when such a vport group manager is trying to access vports in its group.
E.g, PF vport manager (not eswitch manager) tries to configure the MAC
of its VF vport, a kernel trace will happen similar as bellow:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
 ...
 RIP: 0010:mlx5_eswitch_get_vport_config+0xc/0x180 [mlx5_core]
 ...

Fixes: 5f5991f3 ("net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager")
Signed-off-by: default avatarBodong Wang <bodong@mellanox.com>
Reported-by: default avatarYuval Avnery <yuvalav@mellanox.com>
Reviewed-by: default avatarDaniel Jurgens <danielj@mellanox.com>
Reviewed-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d3ee1e68
......@@ -1607,7 +1607,7 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
int vport_num;
int err;
if (!MLX5_ESWITCH_MANAGER(dev))
if (!MLX5_VPORT_MANAGER(dev))
return 0;
esw_info(dev,
......@@ -1680,7 +1680,7 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw)
{
if (!esw || !MLX5_ESWITCH_MANAGER(esw->dev))
if (!esw || !MLX5_VPORT_MANAGER(esw->dev))
return;
esw_info(esw->dev, "cleanup\n");
......
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