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>
This commit is contained in:
Ido Schimmel
David S. Miller
parent
3c55bdaca0
commit
981f084b36
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@ -2311,6 +2311,71 @@ void mlxsw_sp_bridge_vxlan_leave(struct mlxsw_sp *mlxsw_sp,
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bridge_device->ops->vxlan_leave(bridge_device, vxlan_dev);
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}
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static void
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mlxsw_sp_switchdev_vxlan_addr_convert(const union vxlan_addr *vxlan_addr,
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enum mlxsw_sp_l3proto *proto,
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union mlxsw_sp_l3addr *addr)
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{
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if (vxlan_addr->sa.sa_family == AF_INET) {
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addr->addr4 = vxlan_addr->sin.sin_addr.s_addr;
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*proto = MLXSW_SP_L3_PROTO_IPV4;
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} else {
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addr->addr6 = vxlan_addr->sin6.sin6_addr;
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*proto = MLXSW_SP_L3_PROTO_IPV6;
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}
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}
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static void
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mlxsw_sp_switchdev_addr_vxlan_convert(enum mlxsw_sp_l3proto proto,
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const union mlxsw_sp_l3addr *addr,
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union vxlan_addr *vxlan_addr)
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{
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switch (proto) {
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case MLXSW_SP_L3_PROTO_IPV4:
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vxlan_addr->sa.sa_family = AF_INET;
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vxlan_addr->sin.sin_addr.s_addr = addr->addr4;
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break;
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case MLXSW_SP_L3_PROTO_IPV6:
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vxlan_addr->sa.sa_family = AF_INET6;
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vxlan_addr->sin6.sin6_addr = addr->addr6;
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break;
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}
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}
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static void mlxsw_sp_fdb_vxlan_call_notifiers(struct net_device *dev,
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const char *mac,
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enum mlxsw_sp_l3proto proto,
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union mlxsw_sp_l3addr *addr,
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__be32 vni, bool adding)
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{
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struct switchdev_notifier_vxlan_fdb_info info;
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struct vxlan_dev *vxlan = netdev_priv(dev);
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enum switchdev_notifier_type type;
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type = adding ? SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE :
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SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE;
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mlxsw_sp_switchdev_addr_vxlan_convert(proto, addr, &info.remote_ip);
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info.remote_port = vxlan->cfg.dst_port;
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info.remote_vni = vni;
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info.remote_ifindex = 0;
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ether_addr_copy(info.eth_addr, mac);
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info.vni = vni;
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info.offloaded = adding;
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call_switchdev_notifiers(type, dev, &info.info);
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}
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static void mlxsw_sp_fdb_nve_call_notifiers(struct net_device *dev,
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const char *mac,
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enum mlxsw_sp_l3proto proto,
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union mlxsw_sp_l3addr *addr,
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__be32 vni,
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bool adding)
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{
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if (netif_is_vxlan(dev))
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mlxsw_sp_fdb_vxlan_call_notifiers(dev, mac, proto, addr, vni,
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adding);
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}
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static void
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mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type,
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const char *mac, u16 vid,
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@ -2442,6 +2507,122 @@ just_remove:
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goto do_fdb_op;
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}
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static int
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__mlxsw_sp_fdb_notify_mac_uc_tunnel_process(struct mlxsw_sp *mlxsw_sp,
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const struct mlxsw_sp_fid *fid,
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bool adding,
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struct net_device **nve_dev,
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u16 *p_vid, __be32 *p_vni)
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{
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struct mlxsw_sp_bridge_device *bridge_device;
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struct net_device *br_dev, *dev;
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int nve_ifindex;
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int err;
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err = mlxsw_sp_fid_nve_ifindex(fid, &nve_ifindex);
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if (err)
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return err;
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err = mlxsw_sp_fid_vni(fid, p_vni);
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if (err)
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return err;
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dev = __dev_get_by_index(&init_net, nve_ifindex);
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if (!dev)
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return -EINVAL;
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*nve_dev = dev;
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if (!netif_running(dev))
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return -EINVAL;
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if (adding && !br_port_flag_is_set(dev, BR_LEARNING))
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return -EINVAL;
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if (adding && netif_is_vxlan(dev)) {
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struct vxlan_dev *vxlan = netdev_priv(dev);
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if (!(vxlan->cfg.flags & VXLAN_F_LEARN))
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return -EINVAL;
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}
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br_dev = netdev_master_upper_dev_get(dev);
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if (!br_dev)
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return -EINVAL;
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bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev);
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if (!bridge_device)
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return -EINVAL;
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*p_vid = bridge_device->ops->fid_vid(bridge_device, fid);
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return 0;
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}
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static void mlxsw_sp_fdb_notify_mac_uc_tunnel_process(struct mlxsw_sp *mlxsw_sp,
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char *sfn_pl,
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int rec_index,
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bool adding)
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{
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enum mlxsw_reg_sfn_uc_tunnel_protocol sfn_proto;
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enum switchdev_notifier_type type;
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struct net_device *nve_dev;
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union mlxsw_sp_l3addr addr;
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struct mlxsw_sp_fid *fid;
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char mac[ETH_ALEN];
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u16 fid_index, vid;
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__be32 vni;
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u32 uip;
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int err;
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mlxsw_reg_sfn_uc_tunnel_unpack(sfn_pl, rec_index, mac, &fid_index,
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&uip, &sfn_proto);
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fid = mlxsw_sp_fid_lookup_by_index(mlxsw_sp, fid_index);
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if (!fid)
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goto err_fid_lookup;
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err = mlxsw_sp_nve_learned_ip_resolve(mlxsw_sp, uip,
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(enum mlxsw_sp_l3proto) sfn_proto,
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&addr);
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if (err)
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goto err_ip_resolve;
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err = __mlxsw_sp_fdb_notify_mac_uc_tunnel_process(mlxsw_sp, fid, adding,
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&nve_dev, &vid, &vni);
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if (err)
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goto err_fdb_process;
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err = mlxsw_sp_port_fdb_tunnel_uc_op(mlxsw_sp, mac, fid_index,
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(enum mlxsw_sp_l3proto) sfn_proto,
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&addr, adding, true);
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if (err)
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goto err_fdb_op;
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mlxsw_sp_fdb_nve_call_notifiers(nve_dev, mac,
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(enum mlxsw_sp_l3proto) sfn_proto,
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&addr, vni, adding);
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type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE :
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SWITCHDEV_FDB_DEL_TO_BRIDGE;
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mlxsw_sp_fdb_call_notifiers(type, mac, vid, nve_dev, adding);
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mlxsw_sp_fid_put(fid);
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return;
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err_fdb_op:
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err_fdb_process:
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err_ip_resolve:
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mlxsw_sp_fid_put(fid);
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err_fid_lookup:
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/* Remove an FDB entry in case we cannot process it. Otherwise the
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* device will keep sending the same notification over and over again.
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*/
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mlxsw_sp_port_fdb_tunnel_uc_op(mlxsw_sp, mac, fid_index,
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(enum mlxsw_sp_l3proto) sfn_proto, &addr,
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false, true);
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}
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static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
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char *sfn_pl, int rec_index)
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{
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@ -2462,6 +2643,14 @@ static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
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mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
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rec_index, false);
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break;
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case MLXSW_REG_SFN_REC_TYPE_LEARNED_UNICAST_TUNNEL:
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mlxsw_sp_fdb_notify_mac_uc_tunnel_process(mlxsw_sp, sfn_pl,
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rec_index, true);
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break;
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case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_UNICAST_TUNNEL:
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mlxsw_sp_fdb_notify_mac_uc_tunnel_process(mlxsw_sp, sfn_pl,
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rec_index, false);
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break;
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}
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}
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@ -2516,20 +2705,6 @@ struct mlxsw_sp_switchdev_event_work {
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unsigned long event;
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};
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static void
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mlxsw_sp_switchdev_vxlan_addr_convert(const union vxlan_addr *vxlan_addr,
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enum mlxsw_sp_l3proto *proto,
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union mlxsw_sp_l3addr *addr)
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{
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if (vxlan_addr->sa.sa_family == AF_INET) {
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addr->addr4 = vxlan_addr->sin.sin_addr.s_addr;
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*proto = MLXSW_SP_L3_PROTO_IPV4;
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} else {
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addr->addr6 = vxlan_addr->sin6.sin6_addr;
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*proto = MLXSW_SP_L3_PROTO_IPV6;
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}
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}
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static void
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mlxsw_sp_switchdev_bridge_vxlan_fdb_event(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_switchdev_event_work *
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