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ipv6: Add __in6_dev_get_rtnl_net().

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We will convert rtnl_lock() with rtnl_net_lock(), and we want to
convert __in6_dev_get() too.

__in6_dev_get() uses rcu_dereference_rtnl(), but as written in its
comment, rtnl_dereference() or rcu_dereference() is preferable.

Let's add __in6_dev_get_rtnl_net() that uses rtnl_net_dereference().

We can add the RCU version helper later if needed.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250115080608.28127-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Kuniyuki Iwashima 2025-01-15 17:05:58 +09:00 committed by Jakub Kicinski
parent ba5f78505f
commit f7a6082b5e
1 changed files with 5 additions and 0 deletions
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5
include/net/addrconf.h
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@ -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