From: Bodong Wang <bodong@mellanox.com>
Date: Sun, 13 Jan 2019 22:47:26 -0600
Subject: Revert "net/mlx5e: E-Switch, Initialize eswitch only if eswitch
manager"
Patch-mainline: v5.0-rc5
Git-commit: 4e046de0f50e04acd48eb373d6a9061ddf014e0c
References: bsc#1103990 FATE#326006
This reverts commit 5f5991f36dce1e69dd8bd7495763eec2e28f08e7.
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: 5f5991f36dce ("net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager")
Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reported-by: Yuval Avnery <yuvalav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1696,7 +1696,7 @@ int mlx5_eswitch_init(struct mlx5_core_d
int vport_num;
int err;
- if (!MLX5_ESWITCH_MANAGER(dev))
+ if (!MLX5_VPORT_MANAGER(dev))
return 0;
esw_info(dev,
@@ -1765,7 +1765,7 @@ abort:
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");