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[net-next,RFC,v1,10/27] afnetns: add ifa_find_afnetns_rcu

Message ID 20170312230151.5185-11-hannes@stressinduktion.org
State RFC, archived
Delegated to: David Miller
Headers show

Commit Message

Hannes Frederic Sowa March 12, 2017, 11:01 p.m. UTC 
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
---
 include/linux/inetdevice.h | 11 +++++++++++
 1 file changed, 11 insertions(+)
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Patch

diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index eb1b662f62626f..01cbcfe93383b7 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -180,6 +180,17 @@  static __inline__ bool inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
 	return !((addr^ifa->ifa_address)&ifa->ifa_mask);
 }
 
+static inline struct afnetns *ifa_find_afnetns_rcu(struct net *net, __be32 addr)
+{
+#if IS_ENABLED(CONFIG_AFNETNS)
+	struct in_ifaddr *ifa = ifa_find_rcu(net, addr);
+
+	return ifa ? ifa->afnetns : net->afnet_ns;
+#else
+	return NULL;
+#endif
+}
+
 /*
  *	Check if a mask is acceptable.
  */