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-rw-r--r--net/batman-adv/multicast.c41
1 files changed, 5 insertions, 36 deletions
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 1d63c8cbbfe7..923e2197c2db 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -193,53 +193,22 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get(struct batadv_priv *bat_priv,
* BATADV_MCAST_WANT_NO_RTR6: No IPv6 multicast router is present
* The former two OR'd: no multicast router is present
*/
-#if IS_ENABLED(CONFIG_IPV6)
static u8 batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv,
struct net_device *bridge)
{
- struct list_head bridge_mcast_list = LIST_HEAD_INIT(bridge_mcast_list);
struct net_device *dev = bat_priv->soft_iface;
- struct br_ip_list *br_ip_entry, *tmp;
- u8 flags = BATADV_MCAST_WANT_NO_RTR6;
- int ret;
+ u8 flags = BATADV_NO_FLAGS;
if (!bridge)
return BATADV_MCAST_WANT_NO_RTR4 | BATADV_MCAST_WANT_NO_RTR6;
- /* TODO: ask the bridge if a multicast router is present (the bridge
- * is capable of performing proper RFC4286 multicast router
- * discovery) instead of searching for a ff02::2 listener here
- */
- ret = br_multicast_list_adjacent(dev, &bridge_mcast_list);
- if (ret < 0)
- return BATADV_NO_FLAGS;
-
- list_for_each_entry_safe(br_ip_entry, tmp, &bridge_mcast_list, list) {
- /* the bridge snooping does not maintain IPv4 link-local
- * addresses - therefore we won't find any IPv4 multicast router
- * address here, only IPv6 ones
- */
- if (br_ip_entry->addr.proto == htons(ETH_P_IPV6) &&
- ipv6_addr_is_ll_all_routers(&br_ip_entry->addr.dst.ip6))
- flags &= ~BATADV_MCAST_WANT_NO_RTR6;
-
- list_del(&br_ip_entry->list);
- kfree(br_ip_entry);
- }
+ if (!br_multicast_has_router_adjacent(dev, ETH_P_IP))
+ flags |= BATADV_MCAST_WANT_NO_RTR4;
+ if (!br_multicast_has_router_adjacent(dev, ETH_P_IPV6))
+ flags |= BATADV_MCAST_WANT_NO_RTR6;
return flags;
}
-#else
-static inline u8
-batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv,
- struct net_device *bridge)
-{
- if (bridge)
- return BATADV_NO_FLAGS;
- else
- return BATADV_MCAST_WANT_NO_RTR4 | BATADV_MCAST_WANT_NO_RTR6;
-}
-#endif
/**
* batadv_mcast_mla_rtr_flags_get() - get multicast router flags