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[NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support

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Now that network timestamps use ktime_t infrastructure, we can add a new
SOL_SOCKET sockopt  SO_TIMESTAMPNS.

This command is similar to SO_TIMESTAMP, but permits transmission of
a 'timespec struct' instead of a 'timeval struct' control message.
(nanosecond resolution instead of microsecond)

Control message is labelled SCM_TIMESTAMPNS instead of SCM_TIMESTAMP

A socket cannot mix SO_TIMESTAMP and SO_TIMESTAMPNS : the two modes are
mutually exclusive.

sock_recv_timestamp() became too big to be fully inlined so I added a
__sock_recv_timestamp() helper function.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: linux-arch@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2007-03-25 22:14:49 -07:00 • committed by David S. Miller
parent c7a3c5da35
commit 92f37fd2ee
25 changed files with 101 additions and 13 deletions
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2
include/asm-sparc/socket.h
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@ -49,6 +49,8 @@
#define SO_PEERSEC 0x001e
#define SO_PASSSEC 0x001f
#define SO_TIMESTAMPNS 0x0021
#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
/* Security levels - as per NRL IPv6 - don't actually do anything */
#define SO_SECURITY_AUTHENTICATION 0x5001