diff options
| author | David S. Miller <davem@davemloft.net> | 2013-02-13 13:22:24 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-13 13:22:24 -0500 |
| commit | b8fa4100350432504df438014e2e5e9c1bbb6325 (patch) | |
| tree | 0fc416746eeca68bbba228958636dd919fc3785f /include/uapi/linux | |
| parent | d0023f820e003857248d14f2213ac3930283f16c (diff) | |
| parent | ee684b6f2830047d19877e5547989740f18b1a5d (diff) | |
Merge branch 'tcp_tsoffset'
Andrey Vagin says:
====================
If a TCP socket will get live-migrated from one box to another the
timestamps (which are typically ON) will get screwed up -- the new
kernel will generate TS values that has nothing to do with what they
were on dump. The solution is to yet again fix the kernel and put a
"timestamp offset" on a socket.
A socket offset is added in places where externally visible tcp
timestamp option is parsed/initialized.
Connections in the SYN_RECV state are not supported, global
tcp_time_stamp is used for them, because repair mode doesn't support
this state. In a future it can be implemented by the similar way as for
TIME_WAIT sockets.
For time-wait sockets offset is inhereted by a proper tcp_sock.
A per-socket offset can be set only for sockets in repair mode.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/tcp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index e962faa5ab0d..6b1ead0b0c9d 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -111,6 +111,7 @@ enum { #define TCP_QUEUE_SEQ 21 #define TCP_REPAIR_OPTIONS 22 #define TCP_FASTOPEN 23 /* Enable FastOpen on listeners */ +#define TCP_TIMESTAMP 24 struct tcp_repair_opt { __u32 opt_code; |