Merge branch 'ipv6-convert-rtm_-new-del-addr-and-more-to-per-netns-rtnl'

Kuniyuki Iwashima says:

====================
ipv6: Convert RTM_{NEW,DEL}ADDR and more to per-netns RTNL.

This series converts RTM_NEWADDR/RTM_DELADDR and some more
RTNL users in addrconf.c to per-netns RTNL.

v1: https://lore.kernel.org/20250114080516.46155-1-kuniyu@amazon.com
====================

Link: https://patch.msgid.link/20250115080608.28127-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: kuba-moo

include/net/addrconf.h

@@ -347,6 +347,11 @@ static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev)
 	return rcu_dereference_rtnl(dev->ip6_ptr);
 }
 
+static inline struct inet6_dev *__in6_dev_get_rtnl_net(const struct net_device *dev)
+{
+	return rtnl_net_dereference(dev_net(dev), dev->ip6_ptr);
+}
+
 /**
  * __in6_dev_stats_get - get inet6_dev pointer for stats
  * @dev: network device