From 1ec047eb4751e331bc61cff0e98f0db67db8b8dc Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Thu, 27 Jun 2013 00:06:56 +0200 Subject: ipv6: introduce per-interface counter for dad-completed ipv6 addresses To reduce the number of unnecessary router solicitations, MLDv2 and IGMPv3 messages we need to track the number of valid (as in non-optimistic, no-dad-failed and non-tentative) link-local addresses. Therefore, this patch implements a valid_ll_addr_cnt in struct inet6_dev. We now only emit router solicitations if the first link-local address finishes duplicate address detection. The changes for MLDv2 and IGMPv3 are in a follow-up patch. While there, also simplify one if statement(one minor nit I made in one of my previous patches): if (!...) do(); else return; <> if (...) return; do(); Cc: Flavio Leitner Cc: YOSHIFUJI Hideaki Cc: David Stevens Suggested-by: David Stevens Signed-off-by: Hannes Frederic Sowa Acked-by: Flavio Leitner Signed-off-by: David S. Miller --- include/net/if_inet6.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/if_inet6.h') diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index e4c5a2d2ba34..1628b8f5fb26 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -166,6 +166,7 @@ struct inet6_dev { struct net_device *dev; struct list_head addr_list; + int valid_ll_addr_cnt; struct ifmcaddr6 *mc_list; struct ifmcaddr6 *mc_tomb; -- cgit v1.2.1