kmem_cache_free(br_fdb_cache, ent);
}
+/* When a static FDB entry is added, the mac address from the entry is
+ * added to the bridge private HW address list and all required ports
+ * are then updated with the new information.
+ * Called under RTNL.
+ */
+static void fdb_add_hw(struct net_bridge *br, const unsigned char *addr)
+{
+ int err;
+ struct net_bridge_port *p;
+
+ ASSERT_RTNL();
+
+ list_for_each_entry(p, &br->port_list, list) {
+ if (!br_promisc_port(p)) {
+ err = dev_uc_add(p->dev, addr);
+ if (err)
+ goto undo;
+ }
+ }
+
+ return;
+undo:
+ list_for_each_entry_continue_reverse(p, &br->port_list, list) {
+ if (!br_promisc_port(p))
+ dev_uc_del(p->dev, addr);
+ }
+}
+
+/* When a static FDB entry is deleted, the HW address from that entry is
+ * also removed from the bridge private HW address list and updates all
+ * the ports with needed information.
+ * Called under RTNL.
+ */
+static void fdb_del_hw(struct net_bridge *br, const unsigned char *addr)
+{
+ struct net_bridge_port *p;
+
+ ASSERT_RTNL();
+
+ list_for_each_entry(p, &br->port_list, list) {
+ if (!br_promisc_port(p))
+ dev_uc_del(p->dev, addr);
+ }
+}
+
static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
{
+ if (f->is_static)
+ fdb_del_hw(br, f->addr.addr);
+
hlist_del_rcu(&f->hlist);
fdb_notify(br, f, RTM_DELNEIGH);
call_rcu(&f->rcu, fdb_rcu_free);
return -ENOMEM;
fdb->is_local = fdb->is_static = 1;
+ fdb_add_hw(br, addr);
fdb_notify(br, fdb, RTM_NEWNEIGH);
return 0;
}
if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->addr))
goto nla_put_failure;
+ if (nla_put_u32(skb, NDA_MASTER, br->dev->ifindex))
+ goto nla_put_failure;
ci.ndm_used = jiffies_to_clock_t(now - fdb->used);
ci.ndm_confirmed = 0;
ci.ndm_updated = jiffies_to_clock_t(now - fdb->updated);
{
return NLMSG_ALIGN(sizeof(struct ndmsg))
+ nla_total_size(ETH_ALEN) /* NDA_LLADDR */
+ + nla_total_size(sizeof(u32)) /* NDA_MASTER */
+ nla_total_size(sizeof(u16)) /* NDA_VLAN */
+ nla_total_size(sizeof(struct nda_cacheinfo));
}
int br_fdb_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct net_device *dev,
+ struct net_device *filter_dev,
int idx)
{
struct net_bridge *br = netdev_priv(dev);
if (idx < cb->args[0])
goto skip;
+ if (filter_dev && (!f->dst || !f->dst->dev ||
+ f->dst->dev != filter_dev))
+ goto skip;
+
if (fdb_fill_info(skb, br, f,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
}
if (fdb_to_nud(fdb) != state) {
- if (state & NUD_PERMANENT)
- fdb->is_local = fdb->is_static = 1;
- else if (state & NUD_NOARP) {
+ if (state & NUD_PERMANENT) {
+ fdb->is_local = 1;
+ if (!fdb->is_static) {
+ fdb->is_static = 1;
+ fdb_add_hw(br, addr);
+ }
+ } else if (state & NUD_NOARP) {
+ fdb->is_local = 0;
+ if (!fdb->is_static) {
+ fdb->is_static = 1;
+ fdb_add_hw(br, addr);
+ }
+ } else {
fdb->is_local = 0;
- fdb->is_static = 1;
- } else
- fdb->is_local = fdb->is_static = 0;
+ if (fdb->is_static) {
+ fdb->is_static = 0;
+ fdb_del_hw(br, addr);
+ }
+ }
modified = true;
}
out:
return err;
}
+
+int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p)
+{
+ struct net_bridge_fdb_entry *fdb, *tmp;
+ int i;
+ int err;
+
+ ASSERT_RTNL();
+
+ for (i = 0; i < BR_HASH_SIZE; i++) {
+ hlist_for_each_entry(fdb, &br->hash[i], hlist) {
+ /* We only care for static entries */
+ if (!fdb->is_static)
+ continue;
+
+ err = dev_uc_add(p->dev, fdb->addr.addr);
+ if (err)
+ goto rollback;
+ }
+ }
+ return 0;
+
+rollback:
+ for (i = 0; i < BR_HASH_SIZE; i++) {
+ hlist_for_each_entry(tmp, &br->hash[i], hlist) {
+ /* If we reached the fdb that failed, we can stop */
+ if (tmp == fdb)
+ break;
+
+ /* We only care for static entries */
+ if (!tmp->is_static)
+ continue;
+
+ dev_uc_del(p->dev, tmp->addr.addr);
+ }
+ }
+ return err;
+}
+
+void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
+{
+ struct net_bridge_fdb_entry *fdb;
+ int i;
+
+ ASSERT_RTNL();
+
+ for (i = 0; i < BR_HASH_SIZE; i++) {
+ hlist_for_each_entry_rcu(fdb, &br->hash[i], hlist) {
+ /* We only care for static entries */
+ if (!fdb->is_static)
+ continue;
+
+ dev_uc_del(p->dev, fdb->addr.addr);
+ }
+ }
+}