bonding: IGMP handling cleanup

[net-next-2.6.git] / net / ipv4 / igmp.c

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index afb1e82a59f9acea63d1037f0ca5414cb8df58bf..50f6bc1a002acc7324dd46586d5698fed1090b62 100644 (file)
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1267,26 +1267,32 @@ EXPORT_SYMBOL(ip_mc_inc_group);
 
 /*
  *     Resend IGMP JOIN report; used for bonding.
+ *     Called with rcu_read_lock()
  */
-void ip_mc_rejoin_group(struct ip_mc_list *im)
+void ip_mc_rejoin_groups(struct in_device *in_dev)
 {
 #ifdef CONFIG_IP_MULTICAST
-       struct in_device *in_dev = im->interface;
+       struct ip_mc_list *im;
+       int type;
 
-       if (im->multiaddr == IGMP_ALL_HOSTS)
-               return;
+       for_each_pmc_rcu(in_dev, im) {
+               if (im->multiaddr == IGMP_ALL_HOSTS)
+                       continue;
 
-       /* a failover is happening and switches
-        * must be notified immediately */
-       if (IGMP_V1_SEEN(in_dev))
-               igmp_send_report(in_dev, im, IGMP_HOST_MEMBERSHIP_REPORT);
-       else if (IGMP_V2_SEEN(in_dev))
-               igmp_send_report(in_dev, im, IGMPV2_HOST_MEMBERSHIP_REPORT);
-       else
-               igmp_send_report(in_dev, im, IGMPV3_HOST_MEMBERSHIP_REPORT);
+               /* a failover is happening and switches
+                * must be notified immediately
+                */
+               if (IGMP_V1_SEEN(in_dev))
+                       type = IGMP_HOST_MEMBERSHIP_REPORT;
+               else if (IGMP_V2_SEEN(in_dev))
+                       type = IGMPV2_HOST_MEMBERSHIP_REPORT;
+               else
+                       type = IGMPV3_HOST_MEMBERSHIP_REPORT;
+               igmp_send_report(in_dev, im, type);
+       }
 #endif
 }
-EXPORT_SYMBOL(ip_mc_rejoin_group);
+EXPORT_SYMBOL(ip_mc_rejoin_groups);
 
 /*
  *     A socket has left a multicast group on device dev