diff options
Diffstat (limited to 'net/bridge/br_vlan_options.c')
| -rw-r--r-- | net/bridge/br_vlan_options.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c index d3618da32b8e..138e180cf4d8 100644 --- a/net/bridge/br_vlan_options.c +++ b/net/bridge/br_vlan_options.c @@ -85,6 +85,40 @@ static int br_vlan_modify_state(struct net_bridge_vlan_group *vg, return 0; } +static int br_vlan_modify_tunnel(const struct net_bridge_port *p, + struct net_bridge_vlan *v, + struct nlattr **tb, + bool *changed, + struct netlink_ext_ack *extack) +{ + struct bridge_vlan_info *vinfo; + int cmdmap; + u32 tun_id; + + if (!p) { + NL_SET_ERR_MSG_MOD(extack, "Can't modify tunnel mapping of non-port vlans"); + return -EINVAL; + } + if (!(p->flags & BR_VLAN_TUNNEL)) { + NL_SET_ERR_MSG_MOD(extack, "Port doesn't have tunnel flag set"); + return -EINVAL; + } + + /* vlan info attribute is guaranteed by br_vlan_rtm_process_one */ + vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); + cmdmap = vinfo->flags & BRIDGE_VLAN_INFO_REMOVE_TUN ? RTM_DELLINK : + RTM_SETLINK; + /* when working on vlan ranges this represents the starting tunnel id */ + tun_id = nla_get_u32(tb[BRIDGE_VLANDB_ENTRY_TUNNEL_ID]); + /* tunnel ids are mapped to each vlan in increasing order, + * the starting vlan is in BRIDGE_VLANDB_ENTRY_INFO and v is the + * current vlan, so we compute: tun_id + v - vinfo->vid + */ + tun_id += v->vid - vinfo->vid; + + return br_vlan_tunnel_info(p, cmdmap, v->vid, tun_id, changed); +} + static int br_vlan_process_one_opts(const struct net_bridge *br, const struct net_bridge_port *p, struct net_bridge_vlan_group *vg, @@ -103,6 +137,11 @@ static int br_vlan_process_one_opts(const struct net_bridge *br, if (err) return err; } + if (tb[BRIDGE_VLANDB_ENTRY_TUNNEL_ID]) { + err = br_vlan_modify_tunnel(p, v, tb, changed, extack); + if (err) + return err; + } return 0; } |