From: Szabolcs Nagy <nsz@port70.net>
Date: Sun, 26 Nov 2017 22:53:48 +0000 (+0000)
Subject: sys/socket.h: add MSG_ZEROCOPY from linux v4.14
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=986bc21713b1c9b38d37356033c02aec188333bf;p=musl

sys/socket.h: add MSG_ZEROCOPY from linux v4.14

MSG_ZEROCOPY socket send flag avoids copy in the kernel
new in linux commit 52267790ef52d7513879238ca9fac22c1733e0e3
SO_ZEROCOPY socket option enables MSG_ZEROCOPY if availale
new in linux commit 76851d1212c11365362525e1e2c0a18c97478e6b
---

diff --git a/include/sys/socket.h b/include/sys/socket.h
index 26d16bdf..507da5cc 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -232,6 +232,7 @@ struct linger {
 #define SO_COOKIE               57
 #define SCM_TIMESTAMPING_PKTINFO 58
 #define SO_PEERGROUPS           59
+#define SO_ZEROCOPY             60
 
 #ifndef SOL_SOCKET
 #define SOL_SOCKET      1
@@ -285,6 +286,7 @@ struct linger {
 #define MSG_MORE      0x8000
 #define MSG_WAITFORONE 0x10000
 #define MSG_BATCH     0x40000
+#define MSG_ZEROCOPY  0x4000000
 #define MSG_FASTOPEN  0x20000000
 #define MSG_CMSG_CLOEXEC 0x40000000