6lowpan: add helper to get 6lowpan namespace

This will simplify the new reassembly backport
with no code changes being required.

CC: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: linux-zigbee-devel@lists.sourceforge.net
Cc: David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 5f9eb260990f..bc4118ede5b5 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -373,6 +373,21 @@ static inline void rt_genid_bump_ipv6(struct net *net)
 }
 #endif
 
+#if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
+static inline struct netns_ieee802154_lowpan *
+net_ieee802154_lowpan(struct net *net)
+{
+        return &net->ieee802154_lowpan;
+}
+#else
+static inline struct netns_ieee802154_lowpan *
+net_ieee802154_lowpan(struct net *net)
+{
+        return NULL;
+}
+#endif
+
+
 /* For callers who don't really care about whether it's IPv4 or IPv6 */
 static inline void rt_genid_bump_all(struct net *net)
 {