On Thu, May 14, 2009 at 03:01:33PM +0000, Michael Shalayeff wrote:
> On Thu, May 14, 2009 at 04:59:26PM +0200, Thierry Deval wrote:
> > Nice trick.
> > Though, wouldn't we break the cmsg loop once the SCM_TIMESTAMP is found ?
oh!
i had that break in my head already! (;
of course.
although we shall not have more timestamps than one (:
zefixt.
> > + for (cmsg = CMSG_FIRSTHDR(&somsg); cmsg != NULL;
> > + cmsg = CMSG_NXTHDR(&somsg, cmsg)) {
> > + if (cmsg->cmsg_level == SOL_SOCKET &&
> > + cmsg->cmsg_type == SCM_TIMESTAMP) {
> > + memcpy(&tv1, CMSG_DATA(cmsg), sizeof tv1);
> > + T4 += tv1.tv_sec + JAN_1970 + 1.0e-6 * tv1.tv_usec;
> > ++ break;
> > + }
> > + }
> >
> > Michael Shalayeff wrote:
> > >re
> > >this diff converts ntpd to use socket timestamps (SO_TIMESTAMP sockopt)
> > >for received packets. this seems to reduce deviation by a factor of 5.
> > >code pohnz0red from bgpd and others using recvmsg.
> > >this has ran on a number of servers already (and still should apply
> > >to original ntpd code ;) but surely can use another look.
> > >cu
> > >
> >
>
> --
> paranoic mickey (my employers have changed but, the name has
> remained)
--
paranoic mickey (my employers have changed but, the name has remained)
