Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next

[cascardo/linux.git] / include / uapi / linux / in.h

diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
index f9e8e49..393c5de 100644 (file)
--- a/include/uapi/linux/in.h
+++ b/include/uapi/linux/in.h
@@ -115,6 +115,11 @@ struct in_addr {
 #define IP_PMTUDISC_WANT               1       /* Use per route hints  */
 #define IP_PMTUDISC_DO                 2       /* Always DF            */
 #define IP_PMTUDISC_PROBE              3       /* Ignore dst pmtu      */
+/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
+ * Also incoming ICMP frag_needed notifications will be ignored on
+ * this socket to prevent accepting spoofed ones.
+ */
+#define IP_PMTUDISC_INTERFACE          4
 
 #define IP_MULTICAST_IF                        32
 #define IP_MULTICAST_TTL               33