net/mlx5e: Make sure fib dev exists in fib event

For unreachable route entry the fib dev does not exists.

Fixes: 8914add2c9e5 ("net/mlx5e: Handle FIB events to update tunnel endpoint device")
Reported-by: Dennis Afanasev <dennis.afanasev@stateless.net>
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
index 593503b..f1fb116 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
@@ -1505,7 +1505,7 @@ mlx5e_init_fib_work_ipv4(struct mlx5e_priv *priv,
 
        fen_info = container_of(info, struct fib_entry_notifier_info, info);
        fib_dev = fib_info_nh(fen_info->fi, 0)->fib_nh_dev;
-       if (fib_dev->netdev_ops != &mlx5e_netdev_ops ||
+       if (!fib_dev || fib_dev->netdev_ops != &mlx5e_netdev_ops ||
            fen_info->dst_len != 32)
                return NULL;