[PATCH net-next RFC v1 15/27] afnetns: add ipv6_get_ifaddr_afnetns_rcu

[Hannes Frederic Sowa]

Signed-off-by: Hannes Frederic Sowa <han...@stressinduktion.org>
---
 include/net/addrconf.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index e3f1920ca57968..644fa68bb4ddef 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -104,6 +104,23 @@ int addrconf_prefix_rcv_add_addr(struct net *net, struct 
net_device *dev,
                                 u32 addr_flags, bool sllao, bool tokenized,
                                 __u32 valid_lft, u32 prefered_lft);
 
+static inline
+struct afnetns *ipv6_get_ifaddr_afnetns_rcu(struct net *net,
+                                           const struct in6_addr *addr,
+                                           struct net_device *dev)
+{
+#if IS_ENABLED(CONFIG_AFNETNS)
+       struct inet6_ifaddr *ifp;
+
+       ifp = ipv6_get_ifaddr(net, addr, dev, 1);
+       if (ifp)
+               return ifp->afnetns;
+       return net->afnet_ns;
+#else
+       return NULL;
+#endif
+}
+
 static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev)
 {
        if (dev->addr_len != ETH_ALEN)
-- 
2.9.3