Add more IPV6_* macros to sysdeps/unix/sysv/linux/bits/in.h

[Joseph Myers]

Linux 4.10 adds IPV6_RECVFRAGSIZE to include/uapi/linux/in6.h, which
shows that several such IPV6_* macros are missing from glibc's
sysdeps/unix/sysv/linux/bits/in.h (while older ones are present).  I
don't know whether any of these might be deliberately omitted, but
this patch adds what appear to be the missing more recent macros to
glibc.

Tested for x86_64.

2017-02-21  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/unix/sysv/linux/bits/in.h (IPV6_AUTOFLOWLABEL): New
	macro.
	(IPV6_ADDR_PREFERENCES): Likewise.
	(IPV6_MINHOPCOUNT): Likewise.
	(IPV6_ORIGDSTADDR): Likewise.
	(IPV6_RECVORIGDSTADDR): Likewise.
	(IPV6_TRANSPARENT): Likewise.
	(IPV6_UNICAST_IF): Likewise.
	(IPV6_RECVFRAGSIZE): Likewise.

diff --git a/sysdeps/unix/sysv/linux/bits/in.h b/sysdeps/unix/sysv/linux/bits/in.h
index cd7fd31..377732b 100644
--- a/sysdeps/unix/sysv/linux/bits/in.h
+++ b/sysdeps/unix/sysv/linux/bits/in.h
@@ -215,6 +215,20 @@ struct in_pktinfo
 #define IPV6_RECVTCLASS		66
 #define IPV6_TCLASS		67
 
+#define IPV6_AUTOFLOWLABEL	70
+
+/* RFC5014.  */
+#define IPV6_ADDR_PREFERENCES	72
+
+/* RFC5082.  */
+#define IPV6_MINHOPCOUNT	73
+
+#define IPV6_ORIGDSTADDR	74
+#define IPV6_RECVORIGDSTADDR	IPV6_ORIGDSTADDR
+#define IPV6_TRANSPARENT	75
+#define IPV6_UNICAST_IF		76
+#define IPV6_RECVFRAGSIZE	77
+
 /* Obsolete synonyms for the above.  */
 #if !__USE_KERNEL_IPV6_DEFS
 # define IPV6_ADD_MEMBERSHIP	IPV6_JOIN_GROUP

-- 
Joseph S. Myers
joseph@codesourcery.com