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author | Ido Schimmel <idosch@mellanox.com> | 2018-11-21 08:02:47 +0000 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2018-11-21 17:10:31 -0800 |
commit | 981f084b36754b4e5179e8a3fbba554ba0183f0a (patch) | |
tree | 498c343e1265943f1d6dd827360790133f2c79f1 /drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | |
parent | 3c55bdaca015839ca1d1e5695e7667a9bcfa6e35 (diff) | |
download | linux-stable-981f084b36754b4e5179e8a3fbba554ba0183f0a.tar.gz linux-stable-981f084b36754b4e5179e8a3fbba554ba0183f0a.tar.bz2 linux-stable-981f084b36754b4e5179e8a3fbba554ba0183f0a.zip |
mlxsw: spectrum_switchdev: Process learned VxLAN FDB entries
Start processing two new entry types in addition to current ones:
* Learned unicast tunnel entry
* Aged-out unicast tunnel entry
In both cases the device reports on a new {MAC, FID, IP address} tuple
that was learned / aged-out. Based on this notification, the driver
instructs the device to add / delete the entry to / from its database.
The driver also makes sure to notify the bridge and VxLAN drivers about
the new entry.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 203 |
1 files changed, 189 insertions, 14 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 739a51f0a366..d3d1c1d00d98 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -2312,6 +2312,71 @@ void mlxsw_sp_bridge_vxlan_leave(struct mlxsw_sp *mlxsw_sp, } static void +mlxsw_sp_switchdev_vxlan_addr_convert(const union vxlan_addr *vxlan_addr, + enum mlxsw_sp_l3proto *proto, + union mlxsw_sp_l3addr *addr) +{ + if (vxlan_addr->sa.sa_family == AF_INET) { + addr->addr4 = vxlan_addr->sin.sin_addr.s_addr; + *proto = MLXSW_SP_L3_PROTO_IPV4; + } else { + addr->addr6 = vxlan_addr->sin6.sin6_addr; + *proto = MLXSW_SP_L3_PROTO_IPV6; + } +} + +static void +mlxsw_sp_switchdev_addr_vxlan_convert(enum mlxsw_sp_l3proto proto, + const union mlxsw_sp_l3addr *addr, + union vxlan_addr *vxlan_addr) +{ + switch (proto) { + case MLXSW_SP_L3_PROTO_IPV4: + vxlan_addr->sa.sa_family = AF_INET; + vxlan_addr->sin.sin_addr.s_addr = addr->addr4; + break; + case MLXSW_SP_L3_PROTO_IPV6: + vxlan_addr->sa.sa_family = AF_INET6; + vxlan_addr->sin6.sin6_addr = addr->addr6; + break; + } +} + +static void mlxsw_sp_fdb_vxlan_call_notifiers(struct net_device *dev, + const char *mac, + enum mlxsw_sp_l3proto proto, + union mlxsw_sp_l3addr *addr, + __be32 vni, bool adding) +{ + struct switchdev_notifier_vxlan_fdb_info info; + struct vxlan_dev *vxlan = netdev_priv(dev); + enum switchdev_notifier_type type; + + type = adding ? SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE : + SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE; + mlxsw_sp_switchdev_addr_vxlan_convert(proto, addr, &info.remote_ip); + info.remote_port = vxlan->cfg.dst_port; + info.remote_vni = vni; + info.remote_ifindex = 0; + ether_addr_copy(info.eth_addr, mac); + info.vni = vni; + info.offloaded = adding; + call_switchdev_notifiers(type, dev, &info.info); +} + +static void mlxsw_sp_fdb_nve_call_notifiers(struct net_device *dev, + const char *mac, + enum mlxsw_sp_l3proto proto, + union mlxsw_sp_l3addr *addr, + __be32 vni, + bool adding) +{ + if (netif_is_vxlan(dev)) + mlxsw_sp_fdb_vxlan_call_notifiers(dev, mac, proto, addr, vni, + adding); +} + +static void mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, const char *mac, u16 vid, struct net_device *dev, bool offloaded) @@ -2442,6 +2507,122 @@ just_remove: goto do_fdb_op; } +static int +__mlxsw_sp_fdb_notify_mac_uc_tunnel_process(struct mlxsw_sp *mlxsw_sp, + const struct mlxsw_sp_fid *fid, + bool adding, + struct net_device **nve_dev, + u16 *p_vid, __be32 *p_vni) +{ + struct mlxsw_sp_bridge_device *bridge_device; + struct net_device *br_dev, *dev; + int nve_ifindex; + int err; + + err = mlxsw_sp_fid_nve_ifindex(fid, &nve_ifindex); + if (err) + return err; + + err = mlxsw_sp_fid_vni(fid, p_vni); + if (err) + return err; + + dev = __dev_get_by_index(&init_net, nve_ifindex); + if (!dev) + return -EINVAL; + *nve_dev = dev; + + if (!netif_running(dev)) + return -EINVAL; + + if (adding && !br_port_flag_is_set(dev, BR_LEARNING)) + return -EINVAL; + + if (adding && netif_is_vxlan(dev)) { + struct vxlan_dev *vxlan = netdev_priv(dev); + + if (!(vxlan->cfg.flags & VXLAN_F_LEARN)) + return -EINVAL; + } + + br_dev = netdev_master_upper_dev_get(dev); + if (!br_dev) + return -EINVAL; + + bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); + if (!bridge_device) + return -EINVAL; + + *p_vid = bridge_device->ops->fid_vid(bridge_device, fid); + + return 0; +} + +static void mlxsw_sp_fdb_notify_mac_uc_tunnel_process(struct mlxsw_sp *mlxsw_sp, + char *sfn_pl, + int rec_index, + bool adding) +{ + enum mlxsw_reg_sfn_uc_tunnel_protocol sfn_proto; + enum switchdev_notifier_type type; + struct net_device *nve_dev; + union mlxsw_sp_l3addr addr; + struct mlxsw_sp_fid *fid; + char mac[ETH_ALEN]; + u16 fid_index, vid; + __be32 vni; + u32 uip; + int err; + + mlxsw_reg_sfn_uc_tunnel_unpack(sfn_pl, rec_index, mac, &fid_index, + &uip, &sfn_proto); + + fid = mlxsw_sp_fid_lookup_by_index(mlxsw_sp, fid_index); + if (!fid) + goto err_fid_lookup; + + err = mlxsw_sp_nve_learned_ip_resolve(mlxsw_sp, uip, + (enum mlxsw_sp_l3proto) sfn_proto, + &addr); + if (err) + goto err_ip_resolve; + + err = __mlxsw_sp_fdb_notify_mac_uc_tunnel_process(mlxsw_sp, fid, adding, + &nve_dev, &vid, &vni); + if (err) + goto err_fdb_process; + + err = mlxsw_sp_port_fdb_tunnel_uc_op(mlxsw_sp, mac, fid_index, + (enum mlxsw_sp_l3proto) sfn_proto, + &addr, adding, true); + if (err) + goto err_fdb_op; + + mlxsw_sp_fdb_nve_call_notifiers(nve_dev, mac, + (enum mlxsw_sp_l3proto) sfn_proto, + &addr, vni, adding); + + type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : + SWITCHDEV_FDB_DEL_TO_BRIDGE; + mlxsw_sp_fdb_call_notifiers(type, mac, vid, nve_dev, adding); + + mlxsw_sp_fid_put(fid); + + return; + +err_fdb_op: +err_fdb_process: +err_ip_resolve: + mlxsw_sp_fid_put(fid); +err_fid_lookup: + /* Remove an FDB entry in case we cannot process it. Otherwise the + * device will keep sending the same notification over and over again. + */ + mlxsw_sp_port_fdb_tunnel_uc_op(mlxsw_sp, mac, fid_index, + (enum mlxsw_sp_l3proto) sfn_proto, &addr, + false, true); +} + static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, char *sfn_pl, int rec_index) { @@ -2462,6 +2643,14 @@ static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, rec_index, false); break; + case MLXSW_REG_SFN_REC_TYPE_LEARNED_UNICAST_TUNNEL: + mlxsw_sp_fdb_notify_mac_uc_tunnel_process(mlxsw_sp, sfn_pl, + rec_index, true); + break; + case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_UNICAST_TUNNEL: + mlxsw_sp_fdb_notify_mac_uc_tunnel_process(mlxsw_sp, sfn_pl, + rec_index, false); + break; } } @@ -2517,20 +2706,6 @@ struct mlxsw_sp_switchdev_event_work { }; static void -mlxsw_sp_switchdev_vxlan_addr_convert(const union vxlan_addr *vxlan_addr, - enum mlxsw_sp_l3proto *proto, - union mlxsw_sp_l3addr *addr) -{ - if (vxlan_addr->sa.sa_family == AF_INET) { - addr->addr4 = vxlan_addr->sin.sin_addr.s_addr; - *proto = MLXSW_SP_L3_PROTO_IPV4; - } else { - addr->addr6 = vxlan_addr->sin6.sin6_addr; - *proto = MLXSW_SP_L3_PROTO_IPV6; - } -} - -static void mlxsw_sp_switchdev_bridge_vxlan_fdb_event(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_switchdev_event_work * switchdev_work, |