Add MSG_ZEROCOPY from Linux 4.14 to bits/socket.h.

This patch adds the new MSG_ZEROCOPY constant from Linux 4.14 to the
Linux bits/socket.h.

Tested for x86_64.

	* sysdeps/unix/sysv/linux/bits/socket.h (MSG_ZEROCOPY): New enum
	constant and macro.

diff --git a/ChangeLog b/ChangeLog
index 6ebdeed..f8f46ae 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2017-11-15  Joseph Myers  <joseph@codesourcery.com>
 
+       * sysdeps/unix/sysv/linux/bits/socket.h (MSG_ZEROCOPY): New enum
+       constant and macro.
+
        * sysdeps/unix/sysv/linux/bits/mman-linux.h
        [__USE_MISC] (MADV_WIPEONFORK): New macro.
        [__USE_MISC] (MADV_KEEPONFORK): Likewise.

diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index a9d16e2..168a8e5 100644 (file)
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -237,6 +237,8 @@ enum
 #define MSG_WAITFORONE MSG_WAITFORONE
     MSG_BATCH          = 0x40000, /* sendmmsg: more messages coming.  */
 #define MSG_BATCH      MSG_BATCH
+    MSG_ZEROCOPY       = 0x4000000, /* Use user data in kernel path.  */
+#define MSG_ZEROCOPY   MSG_ZEROCOPY
     MSG_FASTOPEN       = 0x20000000, /* Send data in TCP SYN.  */
 #define MSG_FASTOPEN   MSG_FASTOPEN