1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/ip.h b/include/net/ip.h
index ab6761a7c883..821cedcc8e73 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -33,6 +33,8 @@
 #include <net/flow.h>
 #include <net/flow_dissector.h>
 
+#define IPV4_MAX_PMTU		65535U		/* RFC 2675, Section 5.1 */
+
 struct sock;
 
 struct inet_skb_parm {
@@ -263,11 +265,21 @@ static inline bool sysctl_dev_name_is_allowed(const char *name)
 	return strcmp(name, "default") != 0  && strcmp(name, "all") != 0;
 }
 
+static inline int inet_prot_sock(struct net *net)
+{
+	return net->ipv4.sysctl_ip_prot_sock;
+}
+
 #else
 static inline int inet_is_local_reserved_port(struct net *net, int port)
 {
 	return 0;
 }
+
+static inline int inet_prot_sock(struct net *net)
+{
+	return PROT_SOCK;
+}
 #endif
 
 __be32 inet_current_timestamp(void);