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-rw-r--r--net/bridge/br_mdb.c10
-rw-r--r--net/bridge/br_multicast.c134
-rw-r--r--net/bridge/br_private.h14
3 files changed, 151 insertions, 7 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 482edb9aadc7..10c416c7bf47 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -18,7 +18,12 @@
static bool br_rports_have_mc_router(struct net_bridge *br)
{
+#if IS_ENABLED(CONFIG_IPV6)
+ return !hlist_empty(&br->ip4_mc_router_list) ||
+ !hlist_empty(&br->ip6_mc_router_list);
+#else
return !hlist_empty(&br->ip4_mc_router_list);
+#endif
}
static bool
@@ -31,8 +36,13 @@ br_ip4_rports_get_timer(struct net_bridge_port *port, unsigned long *timer)
static bool
br_ip6_rports_get_timer(struct net_bridge_port *port, unsigned long *timer)
{
+#if IS_ENABLED(CONFIG_IPV6)
+ *timer = br_timer_value(&port->ip6_mc_router_timer);
+ return !hlist_unhashed(&port->ip6_rlist);
+#else
*timer = 0;
return false;
+#endif
}
static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 30144f9d19d7..f234c48036c8 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -63,6 +63,8 @@ static void br_multicast_port_group_rexmit(struct timer_list *t);
static void
br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted);
#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_add_router(struct net_bridge *br,
+ struct net_bridge_port *port);
static void br_ip6_multicast_leave_group(struct net_bridge *br,
struct net_bridge_port *port,
const struct in6_addr *group,
@@ -1369,6 +1371,15 @@ static bool br_ip4_multicast_rport_del(struct net_bridge_port *p)
return br_multicast_rport_del(&p->ip4_rlist);
}
+static bool br_ip6_multicast_rport_del(struct net_bridge_port *p)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ return br_multicast_rport_del(&p->ip6_rlist);
+#else
+ return false;
+#endif
+}
+
static void br_multicast_router_expired(struct net_bridge_port *port,
struct timer_list *t,
struct hlist_node *rlist)
@@ -1395,6 +1406,15 @@ static void br_ip4_multicast_router_expired(struct timer_list *t)
br_multicast_router_expired(port, t, &port->ip4_rlist);
}
+#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_router_expired(struct timer_list *t)
+{
+ struct net_bridge_port *port = from_timer(port, t, ip6_mc_router_timer);
+
+ br_multicast_router_expired(port, t, &port->ip6_rlist);
+}
+#endif
+
static void br_mc_router_state_change(struct net_bridge *p,
bool is_mc_router)
{
@@ -1430,6 +1450,15 @@ static void br_ip4_multicast_local_router_expired(struct timer_list *t)
br_multicast_local_router_expired(br, t);
}
+#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_local_router_expired(struct timer_list *t)
+{
+ struct net_bridge *br = from_timer(br, t, ip6_mc_router_timer);
+
+ br_multicast_local_router_expired(br, t);
+}
+#endif
+
static void br_multicast_querier_expired(struct net_bridge *br,
struct bridge_mcast_own_query *query)
{
@@ -1649,6 +1678,8 @@ int br_multicast_add_port(struct net_bridge_port *port)
timer_setup(&port->ip4_own_query.timer,
br_ip4_multicast_port_query_expired, 0);
#if IS_ENABLED(CONFIG_IPV6)
+ timer_setup(&port->ip6_mc_router_timer,
+ br_ip6_multicast_router_expired, 0);
timer_setup(&port->ip6_own_query.timer,
br_ip6_multicast_port_query_expired, 0);
#endif
@@ -1681,6 +1712,9 @@ void br_multicast_del_port(struct net_bridge_port *port)
spin_unlock_bh(&br->multicast_lock);
br_multicast_gc(&deleted_head);
del_timer_sync(&port->ip4_mc_router_timer);
+#if IS_ENABLED(CONFIG_IPV6)
+ del_timer_sync(&port->ip6_mc_router_timer);
+#endif
free_percpu(port->mcast_stats);
}
@@ -1704,8 +1738,10 @@ static void __br_multicast_enable_port(struct net_bridge_port *port)
#if IS_ENABLED(CONFIG_IPV6)
br_multicast_enable(&port->ip6_own_query);
#endif
- if (port->multicast_router == MDB_RTR_TYPE_PERM)
+ if (port->multicast_router == MDB_RTR_TYPE_PERM) {
br_ip4_multicast_add_router(br, port);
+ br_ip6_multicast_add_router(br, port);
+ }
}
void br_multicast_enable_port(struct net_bridge_port *port)
@@ -1732,7 +1768,9 @@ void br_multicast_disable_port(struct net_bridge_port *port)
del |= br_ip4_multicast_rport_del(port);
del_timer(&port->ip4_mc_router_timer);
del_timer(&port->ip4_own_query.timer);
+ del |= br_ip6_multicast_rport_del(port);
#if IS_ENABLED(CONFIG_IPV6)
+ del_timer(&port->ip6_mc_router_timer);
del_timer(&port->ip6_own_query.timer);
#endif
br_multicast_rport_del_notify(port, del);
@@ -2675,6 +2713,10 @@ br_multicast_rport_from_node(struct net_bridge *br,
struct hlist_head *mc_router_list,
struct hlist_node *rlist)
{
+#if IS_ENABLED(CONFIG_IPV6)
+ if (mc_router_list == &br->ip6_mc_router_list)
+ return hlist_entry(rlist, struct net_bridge_port, ip6_rlist);
+#endif
return hlist_entry(rlist, struct net_bridge_port, ip4_rlist);
}
@@ -2700,6 +2742,19 @@ br_multicast_get_rport_slot(struct net_bridge *br,
return slot;
}
+static bool br_multicast_no_router_otherpf(struct net_bridge_port *port,
+ struct hlist_node *rnode)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ if (rnode != &port->ip6_rlist)
+ return hlist_unhashed(&port->ip6_rlist);
+ else
+ return hlist_unhashed(&port->ip4_rlist);
+#else
+ return true;
+#endif
+}
+
/* Add port to router_list
* list is maintained ordered by pointer value
* and locked by br->multicast_lock and RCU
@@ -2721,8 +2776,14 @@ static void br_multicast_add_router(struct net_bridge *br,
else
hlist_add_head_rcu(rlist, mc_router_list);
- br_rtr_notify(br->dev, port, RTM_NEWMDB);
- br_port_mc_router_state_change(port, true);
+ /* For backwards compatibility for now, only notify if we
+ * switched from no IPv4/IPv6 multicast router to a new
+ * IPv4 or IPv6 multicast router.
+ */
+ if (br_multicast_no_router_otherpf(port, rlist)) {
+ br_rtr_notify(br->dev, port, RTM_NEWMDB);
+ br_port_mc_router_state_change(port, true);
+ }
}
/* Add port to router_list
@@ -2736,6 +2797,19 @@ static void br_ip4_multicast_add_router(struct net_bridge *br,
&br->ip4_mc_router_list);
}
+/* Add port to router_list
+ * list is maintained ordered by pointer value
+ * and locked by br->multicast_lock and RCU
+ */
+static void br_ip6_multicast_add_router(struct net_bridge *br,
+ struct net_bridge_port *port)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ br_multicast_add_router(br, port, &port->ip6_rlist,
+ &br->ip6_mc_router_list);
+#endif
+}
+
static void br_multicast_mark_router(struct net_bridge *br,
struct net_bridge_port *port,
struct timer_list *timer,
@@ -2777,6 +2851,23 @@ static void br_ip4_multicast_mark_router(struct net_bridge *br,
&br->ip4_mc_router_list);
}
+static void br_ip6_multicast_mark_router(struct net_bridge *br,
+ struct net_bridge_port *port)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+ struct timer_list *timer = &br->ip6_mc_router_timer;
+ struct hlist_node *rlist = NULL;
+
+ if (port) {
+ timer = &port->ip6_mc_router_timer;
+ rlist = &port->ip6_rlist;
+ }
+
+ br_multicast_mark_router(br, port, timer, rlist,
+ &br->ip6_mc_router_list);
+#endif
+}
+
static void
br_ip4_multicast_query_received(struct net_bridge *br,
struct net_bridge_port *port,
@@ -2803,7 +2894,7 @@ br_ip6_multicast_query_received(struct net_bridge *br,
return;
br_multicast_update_query_timer(br, query, max_delay);
- br_ip4_multicast_mark_router(br, port);
+ br_ip6_multicast_mark_router(br, port);
}
#endif
@@ -3252,7 +3343,7 @@ static void br_ip6_multicast_mrd_rcv(struct net_bridge *br,
if (icmp6_hdr(skb)->icmp6_type != ICMPV6_MRDISC_ADV)
return;
- br_ip4_multicast_mark_router(br, port);
+ br_ip6_multicast_mark_router(br, port);
}
static int br_multicast_ipv6_rcv(struct net_bridge *br,
@@ -3409,6 +3500,8 @@ void br_multicast_init(struct net_bridge *br)
timer_setup(&br->ip4_own_query.timer,
br_ip4_multicast_query_expired, 0);
#if IS_ENABLED(CONFIG_IPV6)
+ timer_setup(&br->ip6_mc_router_timer,
+ br_ip6_multicast_local_router_expired, 0);
timer_setup(&br->ip6_other_query.timer,
br_ip6_multicast_querier_expired, 0);
timer_setup(&br->ip6_own_query.timer,
@@ -3506,6 +3599,7 @@ void br_multicast_stop(struct net_bridge *br)
del_timer_sync(&br->ip4_other_query.timer);
del_timer_sync(&br->ip4_own_query.timer);
#if IS_ENABLED(CONFIG_IPV6)
+ del_timer_sync(&br->ip6_mc_router_timer);
del_timer_sync(&br->ip6_other_query.timer);
del_timer_sync(&br->ip6_own_query.timer);
#endif
@@ -3540,6 +3634,9 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val)
case MDB_RTR_TYPE_PERM:
br_mc_router_state_change(br, val == MDB_RTR_TYPE_PERM);
del_timer(&br->ip4_mc_router_timer);
+#if IS_ENABLED(CONFIG_IPV6)
+ del_timer(&br->ip6_mc_router_timer);
+#endif
br->multicast_router = val;
err = 0;
break;
@@ -3562,6 +3659,16 @@ br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted)
if (!deleted)
return;
+ /* For backwards compatibility for now, only notify if there is
+ * no multicast router anymore for both IPv4 and IPv6.
+ */
+ if (!hlist_unhashed(&p->ip4_rlist))
+ return;
+#if IS_ENABLED(CONFIG_IPV6)
+ if (!hlist_unhashed(&p->ip6_rlist))
+ return;
+#endif
+
br_rtr_notify(p->br->dev, p, RTM_DELMDB);
br_port_mc_router_state_change(p, false);
@@ -3580,9 +3687,14 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val)
spin_lock(&br->multicast_lock);
if (p->multicast_router == val) {
/* Refresh the temp router port timer */
- if (p->multicast_router == MDB_RTR_TYPE_TEMP)
+ if (p->multicast_router == MDB_RTR_TYPE_TEMP) {
mod_timer(&p->ip4_mc_router_timer,
now + br->multicast_querier_interval);
+#if IS_ENABLED(CONFIG_IPV6)
+ mod_timer(&p->ip6_mc_router_timer,
+ now + br->multicast_querier_interval);
+#endif
+ }
err = 0;
goto unlock;
}
@@ -3591,21 +3703,31 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val)
p->multicast_router = MDB_RTR_TYPE_DISABLED;
del |= br_ip4_multicast_rport_del(p);
del_timer(&p->ip4_mc_router_timer);
+ del |= br_ip6_multicast_rport_del(p);
+#if IS_ENABLED(CONFIG_IPV6)
+ del_timer(&p->ip6_mc_router_timer);
+#endif
br_multicast_rport_del_notify(p, del);
break;
case MDB_RTR_TYPE_TEMP_QUERY:
p->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
del |= br_ip4_multicast_rport_del(p);
+ del |= br_ip6_multicast_rport_del(p);
br_multicast_rport_del_notify(p, del);
break;
case MDB_RTR_TYPE_PERM:
p->multicast_router = MDB_RTR_TYPE_PERM;
del_timer(&p->ip4_mc_router_timer);
br_ip4_multicast_add_router(br, p);
+#if IS_ENABLED(CONFIG_IPV6)
+ del_timer(&p->ip6_mc_router_timer);
+#endif
+ br_ip6_multicast_add_router(br, p);
break;
case MDB_RTR_TYPE_TEMP:
p->multicast_router = MDB_RTR_TYPE_TEMP;
br_ip4_multicast_mark_router(br, p);
+ br_ip6_multicast_mark_router(br, p);
break;
default:
goto unlock;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index f9a381fcff09..03197ab4af76 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -311,6 +311,8 @@ struct net_bridge_port {
struct hlist_node ip4_rlist;
#if IS_ENABLED(CONFIG_IPV6)
struct bridge_mcast_own_query ip6_own_query;
+ struct timer_list ip6_mc_router_timer;
+ struct hlist_node ip6_rlist;
#endif /* IS_ENABLED(CONFIG_IPV6) */
u32 multicast_eht_hosts_limit;
u32 multicast_eht_hosts_cnt;
@@ -457,6 +459,8 @@ struct net_bridge {
struct bridge_mcast_querier ip4_querier;
struct bridge_mcast_stats __percpu *mcast_stats;
#if IS_ENABLED(CONFIG_IPV6)
+ struct hlist_head ip6_mc_router_list;
+ struct timer_list ip6_mc_router_timer;
struct bridge_mcast_other_query ip6_other_query;
struct bridge_mcast_own_query ip6_own_query;
struct bridge_mcast_querier ip6_querier;
@@ -866,11 +870,19 @@ static inline bool br_group_is_l2(const struct br_ip *group)
static inline struct hlist_node *
br_multicast_get_first_rport_node(struct net_bridge *b, struct sk_buff *skb) {
+#if IS_ENABLED(CONFIG_IPV6)
+ if (skb->protocol == htons(ETH_P_IPV6))
+ return rcu_dereference(hlist_first_rcu(&b->ip6_mc_router_list));
+#endif
return rcu_dereference(hlist_first_rcu(&b->ip4_mc_router_list));
}
static inline struct net_bridge_port *
br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) {
+#if IS_ENABLED(CONFIG_IPV6)
+ if (skb->protocol == htons(ETH_P_IPV6))
+ return hlist_entry_safe(rp, struct net_bridge_port, ip6_rlist);
+#endif
return hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist);
}
@@ -882,7 +894,7 @@ static inline bool br_ip4_multicast_is_router(struct net_bridge *br)
static inline bool br_ip6_multicast_is_router(struct net_bridge *br)
{
#if IS_ENABLED(CONFIG_IPV6)
- return timer_pending(&br->ip4_mc_router_timer);
+ return timer_pending(&br->ip6_mc_router_timer);
#else
return false;
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-05 01:57:25 +0000