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Message-Id: <1486549002-2056-2-git-send-email-jiri@resnulli.us>
Date: Wed, 8 Feb 2017 11:16:28 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, idosch@...lanox.com, eladr@...lanox.com,
mlxsw@...lanox.com
Subject: [patch net-next 01/15] mlxsw: spectrum_router: Nullify nexthop's neigh pointer
From: Ido Schimmel <idosch@...lanox.com>
When we invalidate a nexthop we should also invalidate its neighbour
entry pointer as it might be destroyed later on. This makes the nexthop
de-init function symmetric with its init and also ensures nobody will
try to access the neighbour entry.
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index b19f69f..31680de 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -1398,12 +1398,13 @@ static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp,
__mlxsw_sp_nexthop_neigh_update(nh, true);
list_del(&nh->neigh_list_node);
+ nh->neigh_entry = NULL;
/* If that is the last nexthop connected to that neigh, remove from
* nexthop_neighs_list
*/
- if (list_empty(&nh->neigh_entry->nexthop_list))
- list_del(&nh->neigh_entry->nexthop_neighs_list_node);
+ if (list_empty(&neigh_entry->nexthop_list))
+ list_del(&neigh_entry->nexthop_neighs_list_node);
if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
--
2.7.4
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