diff options
| author |   Richard Cochran <rcochran@linutronix.de> | 2018-07-03 15:42:48 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-07-04 22:30:27 +0900 |
| commit | 80b14dee2bea128928537d61c333f24cb8cbb62f (patch) | |
| tree | 94fda7f405d0ae225e35a2089111d3ad80006752 /include/uapi/asm-generic | |
| parent | net: Clear skb->tstamp only on the forwarding path (diff) | |
| download | linux-dev-80b14dee2bea128928537d61c333f24cb8cbb62f.tar.xz linux-dev-80b14dee2bea128928537d61c333f24cb8cbb62f.zip | |
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 'include/uapi/asm-generic')
| -rw-r--r-- | include/uapi/asm-generic/socket.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/asm-generic/socket.h b/include/uapi/asm-generic/socket.h index 0ae758c90e54..a12692e5f7a8 100644 --- a/include/uapi/asm-generic/socket.h +++ b/include/uapi/asm-generic/socket.h @@ -107,4 +107,7 @@ #define SO_ZEROCOPY 60 +#define SO_TXTIME 61 +#define SCM_TXTIME SO_TXTIME + #endif /* __ASM_GENERIC_SOCKET_H */ |