path: root/arch/alpha/include/uapi/asm/socket.h
diff options
authorRichard Cochran <rcochran@linutronix.de>2018-07-03 15:42:48 -0700
committerDavid S. Miller <davem@davemloft.net>2018-07-04 22:30:27 +0900
commit80b14dee2bea128928537d61c333f24cb8cbb62f (patch)
tree94fda7f405d0ae225e35a2089111d3ad80006752 /arch/alpha/include/uapi/asm/socket.h
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/alpha/include/uapi/asm/socket.h')
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/alpha/include/uapi/asm/socket.h b/arch/alpha/include/uapi/asm/socket.h
index be14f16149d5..065fb372e355 100644
--- a/arch/alpha/include/uapi/asm/socket.h
+++ b/arch/alpha/include/uapi/asm/socket.h
@@ -112,4 +112,7 @@
#define SO_ZEROCOPY 60
+#define SO_TXTIME 61
#endif /* _UAPI_ASM_SOCKET_H */