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authorRichard Cochran <rcochran@linutronix.de>2018-07-03 22:42:48 (GMT)
committerDavid S. Miller <davem@davemloft.net>2018-07-04 13:30:27 (GMT)
commit80b14dee2bea128928537d61c333f24cb8cbb62f (patch)
tree94fda7f405d0ae225e35a2089111d3ad80006752 /arch/s390/include/uapi
parentc47d8c2f38f805ba541496ddd7d8c3aee59b49d5 (diff)
net: Add a new socket option for a future transmit time.
This patch introduces SO_TXTIME. User space enables this option in order to pass a desired future transmit time in a CMSG when calling sendmsg(2). The argument to this socket option is a 8-bytes long struct provided by the uapi header net_tstamp.h defined as: struct sock_txtime { clockid_t clockid; u32 flags; }; Note that new fields were added to struct sock by filling a 2-bytes hole found in the struct. For that reason, neither the struct size or number of cachelines were altered. Signed-off-by: Richard Cochran <rcochran@linutronix.de> Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/s390/include/uapi')
-rw-r--r--arch/s390/include/uapi/asm/socket.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/socket.h b/arch/s390/include/uapi/asm/socket.h
index 3510c0f..39d9014 100644
--- a/arch/s390/include/uapi/asm/socket.h
+++ b/arch/s390/include/uapi/asm/socket.h
@@ -111,4 +111,7 @@
#define SO_ZEROCOPY 60
+#define SO_TXTIME 61
+#define SCM_TXTIME SO_TXTIME
+
#endif /* _ASM_SOCKET_H */

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