IPv6: convert addrconf hash list to RCU

Convert from reader/writer lock to RCU and spinlock for addrconf
hash list.

Adds an additional helper macro for hlist_for_each_entry_continue_rcu
to handle the continue case.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
index 498401541519..22a00b1d2c38 100644
--- a/include/net/if_inet6.h
+++ b/include/net/if_inet6.h
@@ -64,6 +64,7 @@ struct inet6_ifaddr {
 #endif
 
         int                     dead;
+        struct rcu_head         rcu;
 };
 
 struct ip6_sf_socklist {