bridge: Add functionality to sync static fdb entries to hw

Add code that allows static fdb entires to be synced to the
hw list for a specified port.  This will be used later to
program ports that can function in non-promiscuous mode.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 56 insertions, 0 deletions

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 9203d5a1943f..fe124e59a344 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -874,3 +874,59 @@ int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 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);
+                }
+        }
+}