datapath: Add support for 4.1 kernel.

[cascardo/ovs.git] / datapath / linux / compat / include / net / net_namespace.h

diff --git a/datapath/linux/compat/include/net/net_namespace.h b/datapath/linux/compat/include/net/net_namespace.h
index b7dbfe3..edfa131 100644 (file)
--- a/datapath/linux/compat/include/net/net_namespace.h
+++ b/datapath/linux/compat/include/net/net_namespace.h
@@ -51,4 +51,31 @@ static void rpl_unregister_pernet_gen_##TYPE(struct rpl_pernet_operations *rpl_p
 #define DEFINE_COMPAT_PNET_REG_FUNC(TYPE)
 #endif /* 2.6.33 */
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,1,0)
+typedef struct {
+#ifdef CONFIG_NET_NS
+       struct net *net;
+#endif
+} possible_net_t;
+
+static inline void rpl_write_pnet(possible_net_t *pnet, struct net *net)
+{
+#ifdef CONFIG_NET_NS
+       pnet->net = net;
+#endif
+}
+
+static inline struct net *rpl_read_pnet(const possible_net_t *pnet)
+{
+#ifdef CONFIG_NET_NS
+       return pnet->net;
+#else
+       return &init_net;
+#endif
+}
+#else /* Linux >= 4.1 */
+#define rpl_read_pnet read_pnet
+#define rpl_write_pnet write_pnet
+#endif /* Linux >= 4.1 */
+
 #endif /* net/net_namespace.h wrapper */