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Add MSG_ZEROCOPY from Linux 4.14 to bits/socket.h

Message ID alpine.DEB.2.20.1711151807210.15924@digraph.polyomino.org.uk
State New
Headers show

Commit Message

Joseph Myers Nov. 15, 2017, 6:07 p.m. UTC
This patch adds the new MSG_ZEROCOPY constant from Linux 4.14 to the
Linux bits/socket.h.

Tested for x86_64.

2017-11-15  Joseph Myers  <joseph@codesourcery.com>

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

Comments

Florian Weimer Nov. 15, 2017, 6:39 p.m. UTC | #1
On 11/15/2017 07:07 PM, Joseph Myers wrote:
> +    MSG_ZEROCOPY	= 0x4000000, /* Use user data in kernel path.  */
> +#define MSG_ZEROCOPY	MSG_ZEROCOPY

The constant value is the same as in the kernel header, so this loks okay.

Thanks,
Florian
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Patch

diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index a9d16e2..168a8e5 100644
--- 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