@@ -75,6 +75,7 @@ enum switchdev_obj_id {
SWITCHDEV_OBJ_ID_UNDEFINED,
SWITCHDEV_OBJ_ID_PORT_VLAN,
SWITCHDEV_OBJ_ID_PORT_MDB,
+ SWITCHDEV_OBJ_ID_HOST_MDB,
};
struct switchdev_obj {
@@ -291,6 +291,42 @@ static void br_mdb_complete(struct net_device *dev, int err, void *priv)
kfree(priv);
}
+static void br_mdb_switchdev_host_port(struct net_device *dev,
+ struct net_device *lower_dev,
+ struct br_mdb_entry *entry, int type)
+{
+ struct switchdev_obj_port_mdb mdb = {
+ .obj = {
+ .id = SWITCHDEV_OBJ_ID_HOST_MDB,
+ .flags = SWITCHDEV_F_DEFER,
+ },
+ .vid = entry->vid,
+ };
+
+ if (entry->addr.proto == htons(ETH_P_IP))
+ ip_eth_mc_map(entry->addr.u.ip4, mdb.addr);
+#if IS_ENABLED(CONFIG_IPV6)
+ else
+ ipv6_eth_mc_map(&entry->addr.u.ip6, mdb.addr);
+#endif
+
+ mdb.obj.orig_dev = dev;
+ if (type == RTM_NEWMDB)
+ switchdev_port_obj_add(lower_dev, &mdb.obj);
+ if (type == RTM_DELMDB)
+ switchdev_port_obj_del(lower_dev, &mdb.obj);
+}
+
+static void br_mdb_switchdev_host(struct net_device *dev,
+ struct br_mdb_entry *entry, int type)
+{
+ struct net_device *lower_dev;
+ struct list_head *iter;
+
+ netdev_for_each_lower_dev(dev, lower_dev, iter)
+ br_mdb_switchdev_host_port(dev, lower_dev, entry, type);
+}
+
static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
struct br_mdb_entry *entry, int type)
{
@@ -330,6 +366,9 @@ static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
switchdev_port_obj_del(port_dev, &mdb.obj);
}
+ if (!p)
+ br_mdb_switchdev_host(dev, entry, type);
+
skb = nlmsg_new(rtnl_mdb_nlmsg_size(), GFP_ATOMIC);
if (!skb)
goto errout;
@@ -345,6 +345,8 @@ static size_t switchdev_obj_size(const struct switchdev_obj *obj)
return sizeof(struct switchdev_obj_port_vlan);
case SWITCHDEV_OBJ_ID_PORT_MDB:
return sizeof(struct switchdev_obj_port_mdb);
+ case SWITCHDEV_OBJ_ID_HOST_MDB:
+ return sizeof(struct switchdev_obj_port_mdb);
default:
BUG();
}
When the host joins or leaves a multicast group, use switchdev to add an object to the hardware to forward traffic for the group to the host. Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- include/net/switchdev.h | 1 + net/bridge/br_mdb.c | 39 +++++++++++++++++++++++++++++++++++++++ net/switchdev/switchdev.c | 2 ++ 3 files changed, 42 insertions(+)