netdev - [PATCH v1 net-next 04/13] ipv6: Add in6_dev

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Message-ID: <20251028033812.2043964-5-kuniyu@google.com>
Date: Tue, 28 Oct 2025 03:36:59 +0000
From: Kuniyuki Iwashima <kuniyu@...gle.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, Kuniyuki Iwashima <kuniyu@...gle.com>, 
	Kuniyuki Iwashima <kuni1840@...il.com>, netdev@...r.kernel.org
Subject: [PATCH v1 net-next 04/13] ipv6: Add in6_dev_rcu().

rcu_dereference_rtnl() does not clearly tell whether the caller
is under RCU or RTNL.

Let's add in6_dev_rcu() to make it easy to remove __in6_dev_get()
in the future.

Signed-off-by: Kuniyuki Iwashima <kuniyu@...gle.com>
---
 include/net/addrconf.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 9e5e95988b9e..78e8b877fb25 100644
--- a/include/net/addrconf.h
+++ b/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_rcu(const struct net_device *dev)
+{
+	return rcu_dereference(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);
-- 
2.51.1.838.g19442a804e-goog