Update sysdeps/unix/sysv/linux/bits/socket.h for Linux 4.6.

This patch updates sysdeps/unix/sysv/linux/bits/socket.h for new
constants added in Linux 4.6.  AF_KCM / PF_KCM are added.  SOL_KCM is
new, and I added a lot of SOL_* values postdating the last one present
in the header, since I saw no apparent reason for the set in glibc to
stop at SOL_IRDA.  MSG_BATCH is added; Linux also has
MSG_SENDPAGE_NOTLAST which is not in glibc, but given the comment
starts "sendpage() internal" I presume it's correct for it not to be
in glibc.

(Note that this is a case where the Linux kernel header with userspace
relevant values is *not* a uapi header but include/linux/socket.h - I
don't know why, but at least this header, as well as uapi headers,
needs reviewing for glibc-relevant changes each release.)

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

	* sysdeps/unix/sysv/linux/bits/socket.h (PF_KCM): New macro.
	(PF_MAX): Update value.
	(AF_KCM): New macro.
	(SOL_NETBEUI): Likewise.
	(SOL_LLC): Likewise.
	(SOL_DCCP): Likewise.
	(SOL_NETLINK): Likewise.
	(SOL_TIPC): Likewise.
	(SOL_RXRPC): Likewise.
	(SOL_PPPOL2TP): Likewise.
	(SOL_BLUETOOTH): Likewise.
	(SOL_PNPIPE): Likewise.
	(SOL_RDS): Likewise.
	(SOL_IUCV): Likewise.
	(SOL_CAIF): Likewise.
	(SOL_ALG): Likewise.
	(SOL_NFC): Likewise.
	(SOL_KCM): Likewise.
	(MSG_BATCH): New enum value and macro.

ChangeLog

@@ -1,3 +1,25 @@
+2016-05-23  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/bits/socket.h (PF_KCM): New macro.
+	(PF_MAX): Update value.
+	(AF_KCM): New macro.
+	(SOL_NETBEUI): Likewise.
+	(SOL_LLC): Likewise.
+	(SOL_DCCP): Likewise.
+	(SOL_NETLINK): Likewise.
+	(SOL_TIPC): Likewise.
+	(SOL_RXRPC): Likewise.
+	(SOL_PPPOL2TP): Likewise.
+	(SOL_BLUETOOTH): Likewise.
+	(SOL_PNPIPE): Likewise.
+	(SOL_RDS): Likewise.
+	(SOL_IUCV): Likewise.
+	(SOL_CAIF): Likewise.
+	(SOL_ALG): Likewise.
+	(SOL_NFC): Likewise.
+	(SOL_KCM): Likewise.
+	(MSG_BATCH): New enum value and macro.
+
 2016-05-20  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #18185]

sysdeps/unix/sysv/linux/bits/socket.h

@@ -82,7 +82,8 @@ typedef __socklen_t socklen_t;
 #define PF_ALG		38	/* Algorithm sockets.  */
 #define PF_NFC		39	/* NFC sockets.  */
 #define PF_VSOCK	40	/* vSockets.  */
-#define PF_MAX		41	/* For now..  */
+#define PF_KCM		41	/* Kernel Connection Multiplexor.  */
+#define PF_MAX		42	/* For now..  */
 
 /* Address families.  */
 #define AF_UNSPEC	PF_UNSPEC
@@ -129,6 +130,7 @@ typedef __socklen_t socklen_t;
 #define AF_ALG		PF_ALG
 #define AF_NFC		PF_NFC
 #define AF_VSOCK	PF_VSOCK
+#define AF_KCM		PF_KCM
 #define AF_MAX		PF_MAX
 
 /* Socket level values.  Others are defined in the appropriate headers.
@@ -142,6 +144,21 @@ typedef __socklen_t socklen_t;
 #define SOL_ATM		264	/* ATM layer (cell level).  */
 #define SOL_AAL		265	/* ATM Adaption Layer (packet level).  */
 #define SOL_IRDA	266
+#define SOL_NETBEUI	267
+#define SOL_LLC		268
+#define SOL_DCCP	269
+#define SOL_NETLINK	270
+#define SOL_TIPC	271
+#define SOL_RXRPC	272
+#define SOL_PPPOL2TP	273
+#define SOL_BLUETOOTH	274
+#define SOL_PNPIPE	275
+#define SOL_RDS		276
+#define SOL_IUCV	277
+#define SOL_CAIF	278
+#define SOL_ALG		279
+#define SOL_NFC		280
+#define SOL_KCM		281
 
 /* Maximum queue length specifiable by listen.  */
 #define SOMAXCONN	128
@@ -213,6 +230,8 @@ enum
 #define MSG_MORE	MSG_MORE
     MSG_WAITFORONE	= 0x10000, /* Wait for at least one packet to return.*/
 #define MSG_WAITFORONE	MSG_WAITFORONE
+    MSG_BATCH		= 0x40000, /* sendmmsg: more messages coming.  */
+#define MSG_BATCH	MSG_BATCH
     MSG_FASTOPEN	= 0x20000000, /* Send data in TCP SYN.  */
 #define MSG_FASTOPEN	MSG_FASTOPEN