3 files changed, 36 insertions, 1 deletions
diff --git a/include/uapi/linux/errqueue.h b/include/uapi/linux/errqueue.h
index ca5cb3e3c6df..3c70e8ac14b8 100644
--- a/include/uapi/linux/errqueue.h
+++ b/include/uapi/linux/errqueue.h
@@ -5,6 +5,13 @@
 #include <linux/types.h>
 #include <linux/time_types.h>
 
+/* RFC 4884: return offset to extension struct + validation */
+struct sock_ee_data_rfc4884 {
+	__u16	len;
+	__u8	flags;
+	__u8	reserved;
+};
+
 struct sock_extended_err {
 	__u32	ee_errno;	
 	__u8	ee_origin;
@@ -12,7 +19,10 @@ struct sock_extended_err {
 	__u8	ee_code;
 	__u8	ee_pad;
 	__u32   ee_info;
-	__u32   ee_data;
+	union	{
+		__u32   ee_data;
+		struct sock_ee_data_rfc4884 ee_rfc4884;
+	};
 };
 
 #define SO_EE_ORIGIN_NONE	0
@@ -31,6 +41,8 @@ struct sock_extended_err {
 #define SO_EE_CODE_TXTIME_INVALID_PARAM	1
 #define SO_EE_CODE_TXTIME_MISSED	2
 
+#define SO_EE_RFC4884_FLAG_INVALID	1
+
 /**
  *	struct scm_timestamping - timestamps exposed through cmsg
  *
diff --git a/include/uapi/linux/icmp.h b/include/uapi/linux/icmp.h
index 5589eeb791ca..fb169a50895e 100644
--- a/include/uapi/linux/icmp.h
+++ b/include/uapi/linux/icmp.h
@@ -19,6 +19,7 @@
 #define _UAPI_LINUX_ICMP_H
 
 #include <linux/types.h>
+#include <asm/byteorder.h>
 
 #define ICMP_ECHOREPLY		0	/* Echo Reply			*/
 #define ICMP_DEST_UNREACH	3	/* Destination Unreachable	*/
@@ -95,5 +96,26 @@ struct icmp_filter {
 	__u32		data;
 };
 
+/* RFC 4884 extension struct: one per message */
+struct icmp_ext_hdr {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	__u8		reserved1:4,
+			version:4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	__u8		version:4,
+			reserved1:4;
+#else
+#error	"Please fix <asm/byteorder.h>"
+#endif
+	__u8		reserved2;
+	__sum16		checksum;
+};
+
+/* RFC 4884 extension object header: one for each object */
+struct icmp_extobj_hdr {
+	__be16		length;
+	__u8		class_num;
+	__u8		class_type;
+};
 
 #endif /* _UAPI_LINUX_ICMP_H */
diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
index 8533bf07450f..3d0d8231dc19 100644
--- a/include/uapi/linux/in.h
+++ b/include/uapi/linux/in.h
@@ -123,6 +123,7 @@ struct in_addr {
 #define IP_CHECKSUM	23
 #define IP_BIND_ADDRESS_NO_PORT	24
 #define IP_RECVFRAGSIZE	25
+#define IP_RECVERR_RFC4884	26
 
 /* IP_MTU_DISCOVER values */
 #define IP_PMTUDISC_DONT		0	/* Never send DF frames */