Make more room for extra code in the NETDEV_PRECHANGEUPPER handlers from mlxsw by moving the existing sanity checks to 2 new dedicated functions.
Signed-off-by: Vladimir Oltean <vladimir.olt...@nxp.com> Reviewed-by: Florian Fainelli <f.faine...@gmail.com> --- v2->v3: patch is new v3->v4: none .../net/ethernet/mellanox/mlxsw/spectrum.c | 272 +++++++++++------- 1 file changed, 169 insertions(+), 103 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 88699e678544..c1b78878e5cf 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -4055,6 +4055,118 @@ static bool mlxsw_sp_bridge_vxlan_is_valid(struct net_device *br_dev, return true; } +static int +mlxsw_sp_prechangeupper_sanity_checks(struct mlxsw_sp *mlxsw_sp, + struct net_device *dev, + struct net_device *lower_dev, + struct net_device *upper_dev, + struct netdev_notifier_changeupper_info *info, + struct netlink_ext_ack *extack) +{ + u16 proto; + + if (!is_vlan_dev(upper_dev) && + !netif_is_lag_master(upper_dev) && + !netif_is_bridge_master(upper_dev) && + !netif_is_ovs_master(upper_dev) && + !netif_is_macvlan(upper_dev)) { + NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type"); + return -EINVAL; + } + + if (!info->linking) + return 0; + + if (netif_is_bridge_master(upper_dev) && + !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, upper_dev) && + mlxsw_sp_bridge_has_vxlan(upper_dev) && + !mlxsw_sp_bridge_vxlan_is_valid(upper_dev, extack)) + return -EOPNOTSUPP; + + if (netdev_has_any_upper_dev(upper_dev) && + (!netif_is_bridge_master(upper_dev) || + !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, + upper_dev))) { + NL_SET_ERR_MSG_MOD(extack, + "Enslaving a port to a device that already has an upper device is not supported"); + return -EINVAL; + } + + if (netif_is_lag_master(upper_dev) && + !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev, + info->upper_info, extack)) + return -EINVAL; + + if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev)) { + NL_SET_ERR_MSG_MOD(extack, + "Master device is a LAG master and this device has a VLAN"); + return -EINVAL; + } + + if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) && + !netif_is_lag_master(vlan_dev_real_dev(upper_dev))) { + NL_SET_ERR_MSG_MOD(extack, "Can not put a VLAN on a LAG port"); + return -EINVAL; + } + + if (netif_is_macvlan(upper_dev) && + !mlxsw_sp_rif_exists(mlxsw_sp, lower_dev)) { + NL_SET_ERR_MSG_MOD(extack, + "macvlan is only supported on top of router interfaces"); + return -EOPNOTSUPP; + } + + if (netif_is_ovs_master(upper_dev) && vlan_uses_dev(dev)) { + NL_SET_ERR_MSG_MOD(extack, + "Master device is an OVS master and this device has a VLAN"); + return -EINVAL; + } + + if (netif_is_ovs_port(dev) && is_vlan_dev(upper_dev)) { + NL_SET_ERR_MSG_MOD(extack, "Can not put a VLAN on an OVS port"); + return -EINVAL; + } + + if (netif_is_bridge_master(upper_dev)) { + br_vlan_get_proto(upper_dev, &proto); + if (br_vlan_enabled(upper_dev) && + proto != ETH_P_8021Q && proto != ETH_P_8021AD) { + NL_SET_ERR_MSG_MOD(extack, + "Enslaving a port to a bridge with unknown VLAN protocol is not supported"); + return -EOPNOTSUPP; + } + if (vlan_uses_dev(lower_dev) && + br_vlan_enabled(upper_dev) && + proto == ETH_P_8021AD) { + NL_SET_ERR_MSG_MOD(extack, + "Enslaving a port that already has a VLAN upper to an 802.1ad bridge is not supported"); + return -EOPNOTSUPP; + } + } + + if (netif_is_bridge_port(lower_dev) && is_vlan_dev(upper_dev)) { + struct net_device *br_dev = netdev_master_upper_dev_get(lower_dev); + + if (br_vlan_enabled(br_dev)) { + br_vlan_get_proto(br_dev, &proto); + if (proto == ETH_P_8021AD) { + NL_SET_ERR_MSG_MOD(extack, + "VLAN uppers are not supported on a port enslaved to an 802.1ad bridge"); + return -EOPNOTSUPP; + } + } + } + + if (is_vlan_dev(upper_dev) && + ntohs(vlan_dev_vlan_proto(upper_dev)) != ETH_P_8021Q) { + NL_SET_ERR_MSG_MOD(extack, + "VLAN uppers are only supported with 802.1q VLAN protocol"); + return -EOPNOTSUPP; + } + + return 0; +} + static int mlxsw_sp_netdevice_port_upper_event(struct net_device *lower_dev, struct net_device *dev, unsigned long event, void *ptr) @@ -4065,7 +4177,6 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *lower_dev, struct net_device *upper_dev; struct mlxsw_sp *mlxsw_sp; int err = 0; - u16 proto; mlxsw_sp_port = netdev_priv(dev); mlxsw_sp = mlxsw_sp_port->mlxsw_sp; @@ -4075,84 +4186,15 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *lower_dev, switch (event) { case NETDEV_PRECHANGEUPPER: upper_dev = info->upper_dev; - if (!is_vlan_dev(upper_dev) && - !netif_is_lag_master(upper_dev) && - !netif_is_bridge_master(upper_dev) && - !netif_is_ovs_master(upper_dev) && - !netif_is_macvlan(upper_dev)) { - NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type"); - return -EINVAL; - } - if (!info->linking) - break; - if (netif_is_bridge_master(upper_dev) && - !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, upper_dev) && - mlxsw_sp_bridge_has_vxlan(upper_dev) && - !mlxsw_sp_bridge_vxlan_is_valid(upper_dev, extack)) - return -EOPNOTSUPP; - if (netdev_has_any_upper_dev(upper_dev) && - (!netif_is_bridge_master(upper_dev) || - !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, - upper_dev))) { - NL_SET_ERR_MSG_MOD(extack, "Enslaving a port to a device that already has an upper device is not supported"); - return -EINVAL; - } - if (netif_is_lag_master(upper_dev) && - !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev, - info->upper_info, extack)) - return -EINVAL; - if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev)) { - NL_SET_ERR_MSG_MOD(extack, "Master device is a LAG master and this device has a VLAN"); - return -EINVAL; - } - if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) && - !netif_is_lag_master(vlan_dev_real_dev(upper_dev))) { - NL_SET_ERR_MSG_MOD(extack, "Can not put a VLAN on a LAG port"); - return -EINVAL; - } - if (netif_is_macvlan(upper_dev) && - !mlxsw_sp_rif_exists(mlxsw_sp, lower_dev)) { - NL_SET_ERR_MSG_MOD(extack, "macvlan is only supported on top of router interfaces"); - return -EOPNOTSUPP; - } - if (netif_is_ovs_master(upper_dev) && vlan_uses_dev(dev)) { - NL_SET_ERR_MSG_MOD(extack, "Master device is an OVS master and this device has a VLAN"); - return -EINVAL; - } - if (netif_is_ovs_port(dev) && is_vlan_dev(upper_dev)) { - NL_SET_ERR_MSG_MOD(extack, "Can not put a VLAN on an OVS port"); - return -EINVAL; - } - if (netif_is_bridge_master(upper_dev)) { - br_vlan_get_proto(upper_dev, &proto); - if (br_vlan_enabled(upper_dev) && - proto != ETH_P_8021Q && proto != ETH_P_8021AD) { - NL_SET_ERR_MSG_MOD(extack, "Enslaving a port to a bridge with unknown VLAN protocol is not supported"); - return -EOPNOTSUPP; - } - if (vlan_uses_dev(lower_dev) && - br_vlan_enabled(upper_dev) && - proto == ETH_P_8021AD) { - NL_SET_ERR_MSG_MOD(extack, "Enslaving a port that already has a VLAN upper to an 802.1ad bridge is not supported"); - return -EOPNOTSUPP; - } - } - if (netif_is_bridge_port(lower_dev) && is_vlan_dev(upper_dev)) { - struct net_device *br_dev = netdev_master_upper_dev_get(lower_dev); - - if (br_vlan_enabled(br_dev)) { - br_vlan_get_proto(br_dev, &proto); - if (proto == ETH_P_8021AD) { - NL_SET_ERR_MSG_MOD(extack, "VLAN uppers are not supported on a port enslaved to an 802.1ad bridge"); - return -EOPNOTSUPP; - } - } - } - if (is_vlan_dev(upper_dev) && - ntohs(vlan_dev_vlan_proto(upper_dev)) != ETH_P_8021Q) { - NL_SET_ERR_MSG_MOD(extack, "VLAN uppers are only supported with 802.1q VLAN protocol"); - return -EOPNOTSUPP; - } + + err = mlxsw_sp_prechangeupper_sanity_checks(mlxsw_sp, + dev, lower_dev, + upper_dev, + info, + extack); + if (err) + return err; + break; case NETDEV_CHANGEUPPER: upper_dev = info->upper_dev; @@ -4260,6 +4302,46 @@ static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev, return 0; } +static int +mlxsw_sp_vlan_prechangeupper_sanity_checks(struct mlxsw_sp *mlxsw_sp, + struct net_device *vlan_dev, + struct net_device *upper_dev, + struct netdev_notifier_changeupper_info *info, + struct netlink_ext_ack *extack) +{ + if (!netif_is_bridge_master(upper_dev) && + !netif_is_macvlan(upper_dev)) { + NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type"); + return -EINVAL; + } + + if (!info->linking) + return 0; + + if (netif_is_bridge_master(upper_dev) && + !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, upper_dev) && + mlxsw_sp_bridge_has_vxlan(upper_dev) && + !mlxsw_sp_bridge_vxlan_is_valid(upper_dev, extack)) + return -EOPNOTSUPP; + + if (netdev_has_any_upper_dev(upper_dev) && + (!netif_is_bridge_master(upper_dev) || + !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, + upper_dev))) { + NL_SET_ERR_MSG_MOD(extack, + "Enslaving a port to a device that already has an upper device is not supported"); + return -EINVAL; + } + + if (netif_is_macvlan(upper_dev) && + !mlxsw_sp_rif_exists(mlxsw_sp, vlan_dev)) { + NL_SET_ERR_MSG_MOD(extack, "macvlan is only supported on top of router interfaces"); + return -EOPNOTSUPP; + } + + return 0; +} + static int mlxsw_sp_netdevice_port_vlan_event(struct net_device *vlan_dev, struct net_device *dev, unsigned long event, void *ptr, @@ -4277,30 +4359,14 @@ static int mlxsw_sp_netdevice_port_vlan_event(struct net_device *vlan_dev, switch (event) { case NETDEV_PRECHANGEUPPER: upper_dev = info->upper_dev; - if (!netif_is_bridge_master(upper_dev) && - !netif_is_macvlan(upper_dev)) { - NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type"); - return -EINVAL; - } - if (!info->linking) - break; - if (netif_is_bridge_master(upper_dev) && - !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, upper_dev) && - mlxsw_sp_bridge_has_vxlan(upper_dev) && - !mlxsw_sp_bridge_vxlan_is_valid(upper_dev, extack)) - return -EOPNOTSUPP; - if (netdev_has_any_upper_dev(upper_dev) && - (!netif_is_bridge_master(upper_dev) || - !mlxsw_sp_bridge_device_is_offloaded(mlxsw_sp, - upper_dev))) { - NL_SET_ERR_MSG_MOD(extack, "Enslaving a port to a device that already has an upper device is not supported"); - return -EINVAL; - } - if (netif_is_macvlan(upper_dev) && - !mlxsw_sp_rif_exists(mlxsw_sp, vlan_dev)) { - NL_SET_ERR_MSG_MOD(extack, "macvlan is only supported on top of router interfaces"); - return -EOPNOTSUPP; - } + + err = mlxsw_sp_vlan_prechangeupper_sanity_checks(mlxsw_sp, + vlan_dev, + upper_dev, + info, extack); + if (err) + return err; + break; case NETDEV_CHANGEUPPER: upper_dev = info->upper_dev; -- 2.25.1