net: bridge: Add/del switchdev object on host join/leave
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> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
parent
2a26028d11
commit
47d5b6db2a
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@ -76,6 +76,7 @@ enum switchdev_obj_id {
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SWITCHDEV_OBJ_ID_UNDEFINED,
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SWITCHDEV_OBJ_ID_UNDEFINED,
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SWITCHDEV_OBJ_ID_PORT_VLAN,
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SWITCHDEV_OBJ_ID_PORT_VLAN,
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SWITCHDEV_OBJ_ID_PORT_MDB,
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SWITCHDEV_OBJ_ID_PORT_MDB,
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SWITCHDEV_OBJ_ID_HOST_MDB,
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};
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};
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struct switchdev_obj {
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struct switchdev_obj {
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@ -292,6 +292,46 @@ err:
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kfree(priv);
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kfree(priv);
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}
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}
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static void br_mdb_switchdev_host_port(struct net_device *dev,
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struct net_device *lower_dev,
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struct br_mdb_entry *entry, int type)
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{
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struct switchdev_obj_port_mdb mdb = {
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.obj = {
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.id = SWITCHDEV_OBJ_ID_HOST_MDB,
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.flags = SWITCHDEV_F_DEFER,
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},
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.vid = entry->vid,
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};
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if (entry->addr.proto == htons(ETH_P_IP))
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ip_eth_mc_map(entry->addr.u.ip4, mdb.addr);
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#if IS_ENABLED(CONFIG_IPV6)
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else
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ipv6_eth_mc_map(&entry->addr.u.ip6, mdb.addr);
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#endif
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mdb.obj.orig_dev = dev;
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switch (type) {
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case RTM_NEWMDB:
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switchdev_port_obj_add(lower_dev, &mdb.obj);
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break;
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case RTM_DELMDB:
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switchdev_port_obj_del(lower_dev, &mdb.obj);
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break;
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}
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}
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static void br_mdb_switchdev_host(struct net_device *dev,
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struct br_mdb_entry *entry, int type)
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{
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struct net_device *lower_dev;
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struct list_head *iter;
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netdev_for_each_lower_dev(dev, lower_dev, iter)
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br_mdb_switchdev_host_port(dev, lower_dev, entry, type);
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}
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static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
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static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
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struct br_mdb_entry *entry, int type)
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struct br_mdb_entry *entry, int type)
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{
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{
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@ -331,6 +371,9 @@ static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
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switchdev_port_obj_del(port_dev, &mdb.obj);
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switchdev_port_obj_del(port_dev, &mdb.obj);
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}
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}
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if (!p)
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br_mdb_switchdev_host(dev, entry, type);
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skb = nlmsg_new(rtnl_mdb_nlmsg_size(), GFP_ATOMIC);
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skb = nlmsg_new(rtnl_mdb_nlmsg_size(), GFP_ATOMIC);
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if (!skb)
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if (!skb)
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goto errout;
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goto errout;
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@ -345,6 +345,8 @@ static size_t switchdev_obj_size(const struct switchdev_obj *obj)
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return sizeof(struct switchdev_obj_port_vlan);
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return sizeof(struct switchdev_obj_port_vlan);
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case SWITCHDEV_OBJ_ID_PORT_MDB:
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case SWITCHDEV_OBJ_ID_PORT_MDB:
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return sizeof(struct switchdev_obj_port_mdb);
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return sizeof(struct switchdev_obj_port_mdb);
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case SWITCHDEV_OBJ_ID_HOST_MDB:
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return sizeof(struct switchdev_obj_port_mdb);
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default:
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default:
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BUG();
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BUG();
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}
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}
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