This is a note to let you know that I've just added the patch titled
mlxsw: spectrum: Relax sanity checks during enslavement
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: mlxsw-spectrum-relax-sanity-checks-during-enslavement.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Sat Jan 13 10:51:05 CET 2018
From: Ido Schimmel idosch@mellanox.com Date: Mon, 25 Dec 2017 09:05:33 +0100 Subject: mlxsw: spectrum: Relax sanity checks during enslavement
From: Ido Schimmel idosch@mellanox.com
[ Upstream commit 90045fc9c78855bdc625a0ab185d97b72a937613 ]
Since commit 25cc72a33835 ("mlxsw: spectrum: Forbid linking to devices that have uppers") the driver forbids enslavement to netdevs that already have uppers of their own, as this can result in various ordering problems.
This requirement proved to be too strict for some users who need to be able to enslave ports to a bridge that already has uppers. In this case, we can allow the enslavement if the bridge is already known to us, as any configuration performed on top of the bridge was already reflected to the device.
Fixes: 25cc72a33835 ("mlxsw: spectrum: Forbid linking to devices that have uppers") Signed-off-by: Ido Schimmel idosch@mellanox.com Reported-by: Alexander Petrovskiy alexpe@mellanox.com Tested-by: Alexander Petrovskiy alexpe@mellanox.com Signed-off-by: Jiri Pirko jiri@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 11 +++++++++-- drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 2 ++ drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 6 ++++++ 3 files changed, 17 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -4235,7 +4235,10 @@ static int mlxsw_sp_netdevice_port_upper return -EINVAL; if (!info->linking) break; - if (netdev_has_any_upper_dev(upper_dev)) + if (netdev_has_any_upper_dev(upper_dev) && + (!netif_is_bridge_master(upper_dev) || + !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, + upper_dev))) return -EINVAL; if (netif_is_lag_master(upper_dev) && !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev, @@ -4347,6 +4350,7 @@ static int mlxsw_sp_netdevice_port_vlan_ u16 vid) { struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; struct netdev_notifier_changeupper_info *info = ptr; struct net_device *upper_dev; int err = 0; @@ -4358,7 +4362,10 @@ static int mlxsw_sp_netdevice_port_vlan_ return -EINVAL; if (!info->linking) break; - if (netdev_has_any_upper_dev(upper_dev)) + if (netdev_has_any_upper_dev(upper_dev) && + (!netif_is_bridge_master(upper_dev) || + !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, + upper_dev))) return -EINVAL; break; case NETDEV_CHANGEUPPER: --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -326,6 +326,8 @@ int mlxsw_sp_port_bridge_join(struct mlx void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, struct net_device *brport_dev, struct net_device *br_dev); +bool mlxsw_sp_bridge_device_is_offloaded(const struct mlxsw_sp *mlxsw_sp, + const struct net_device *br_dev);
/* spectrum.c */ int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port, --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -134,6 +134,12 @@ mlxsw_sp_bridge_device_find(const struct return NULL; }
+bool mlxsw_sp_bridge_device_is_offloaded(const struct mlxsw_sp *mlxsw_sp, + const struct net_device *br_dev) +{ + return !!mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); +} + static struct mlxsw_sp_bridge_device * mlxsw_sp_bridge_device_create(struct mlxsw_sp_bridge *bridge, struct net_device *br_dev)
Patches currently in stable-queue which might be from idosch@mellanox.com are
queue-4.14/mlxsw-spectrum_router-fix-null-pointer-deref.patch queue-4.14/mlxsw-spectrum-relax-sanity-checks-during-enslavement.patch