From 610e89e05c3f28a7394935aa6b91f99548c4fd3c Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Wed, 28 Dec 2016 14:58:41 +0200 Subject: [PATCH] net/mlx5e: Don't sync netdev state when not registered Skip setting netdev vxlan ports and netdev rx_mode on driver load when netdev is not yet registered. Synchronizing with netdev state is needed only on reset flow where the netdev remains registered for the whole reset period. This also fixes an access before initialization of net_device.addr_list_lock - which for some reason initialized on register_netdev - where we queued set_rx_mode work on driver load before netdev registration. Fixes: 26e59d8077a3 ("net/mlx5e: Implement mlx5e interface attach/detach callbacks") Signed-off-by: Saeed Mahameed Reported-by: Sebastian Ott Reviewed-by: Mohamad Haj Yahia Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/en_main.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index be5ef036401d..cf270f6c90e8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -3781,14 +3781,7 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv) mlx5_lag_add(mdev, netdev); - if (mlx5e_vxlan_allowed(mdev)) { - rtnl_lock(); - udp_tunnel_get_rx_info(netdev); - rtnl_unlock(); - } - mlx5e_enable_async_events(priv); - queue_work(priv->wq, &priv->set_rx_mode_work); if (MLX5_CAP_GEN(mdev, vport_group_manager)) { mlx5_query_nic_vport_mac_address(mdev, 0, rep.hw_id); @@ -3798,6 +3791,18 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv) rep.netdev = netdev; mlx5_eswitch_register_vport_rep(esw, 0, &rep); } + + if (netdev->reg_state != NETREG_REGISTERED) + return; + + /* Device already registered: sync netdev system state */ + if (mlx5e_vxlan_allowed(mdev)) { + rtnl_lock(); + udp_tunnel_get_rx_info(netdev); + rtnl_unlock(); + } + + queue_work(priv->wq, &priv->set_rx_mode_work); } static void mlx5e_nic_disable(struct mlx5e_priv *priv) -- 2.20.1