diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2021-08-10 14:50:24 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-08-10 13:22:57 -0700 |
| commit | c35b57ceff906856dd85af2d6709dab18fbca81f (patch) | |
| tree | a96656f74efb2533a6f11f38ed59b62693e141e9 /drivers/net/ethernet/mellanox | |
| parent | 45a687879b31caae4032abd1c2402e289d2b8083 (diff) | |
| download | linux-c35b57ceff906856dd85af2d6709dab18fbca81f.tar.bz2 | |
net: switchdev: zero-initialize struct switchdev_notifier_fdb_info emitted by drivers towards the bridge
The blamed commit added a new field to struct switchdev_notifier_fdb_info,
but did not make sure that all call paths set it to something valid.
For example, a switchdev driver may emit a SWITCHDEV_FDB_ADD_TO_BRIDGE
notifier, and since the 'is_local' flag is not set, it contains junk
from the stack, so the bridge might interpret those notifications as
being for local FDB entries when that was not intended.
To avoid that now and in the future, zero-initialize all
switchdev_notifier_fdb_info structures created by drivers such that all
newly added fields to not need to touch drivers again.
Fixes: 2c4eca3ef716 ("net: bridge: switchdev: include local flag in FDB notifications")
Reported-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20210810115024.1629983-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c index f3f56f32e435..69a3630818d7 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c @@ -69,7 +69,7 @@ static void mlx5_esw_bridge_fdb_offload_notify(struct net_device *dev, const unsigned char *addr, u16 vid, unsigned long val) { - struct switchdev_notifier_fdb_info send_info; + struct switchdev_notifier_fdb_info send_info = {}; send_info.addr = addr; send_info.vid = vid; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 7e221ef01437..f69cbb3852d5 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -9079,7 +9079,7 @@ mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif, static void mlxsw_sp_rif_fid_fdb_del(struct mlxsw_sp_rif *rif, const char *mac) { - struct switchdev_notifier_fdb_info info; + struct switchdev_notifier_fdb_info info = {}; struct net_device *dev; dev = br_fdb_find_port(rif->dev, mac, 0); @@ -9127,8 +9127,8 @@ mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif, static void mlxsw_sp_rif_vlan_fdb_del(struct mlxsw_sp_rif *rif, const char *mac) { + struct switchdev_notifier_fdb_info info = {}; u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); - struct switchdev_notifier_fdb_info info; struct net_device *br_dev; struct net_device *dev; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index c5ef9aa64efe..8f90cd323d5f 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -2508,7 +2508,7 @@ mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, const char *mac, u16 vid, struct net_device *dev, bool offloaded) { - struct switchdev_notifier_fdb_info info; + struct switchdev_notifier_fdb_info info = {}; info.addr = mac; info.vid = vid; |