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bgpd: use recent monotonic time for readtime

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The readtime value is for diagnostic, and doesn't have to be highly
accurate. This also fixes a problem where the readtime was being measured
with system clock, but the peer_uptime() was comparing with bgp_clock.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
Stephen Hemminger 2013-01-04 22:29:23 +00:00 committed by David Lamparter
parent 47f6aef02b
commit d61c1bbd4b
1 changed files with 11 additions and 2 deletions
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13
bgpd/bgp_packet.c
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@ -2385,6 +2385,15 @@ bgp_marker_all_one (struct stream *s, int length)
return 1; return 1;
} }
/* Recent thread time.
On same clock base as bgp_clock (MONOTONIC)
but can be time of last context switch to bgp_read thread. */
static time_t
bgp_recent_clock (void)
{
return recent_relative_time().tv_sec;
}
/* Starting point of packet process function. */ /* Starting point of packet process function. */
int int
bgp_read (struct thread *thread) bgp_read (struct thread *thread)
@ -2513,14 +2522,14 @@ bgp_read (struct thread *thread)
bgp_open_receive (peer, size); /* XXX return value ignored! */ bgp_open_receive (peer, size); /* XXX return value ignored! */
break; break;
case BGP_MSG_UPDATE: case BGP_MSG_UPDATE:
peer->readtime = time(NULL); /* Last read timer reset */ peer->readtime = bgp_recent_clock ();
bgp_update_receive (peer, size); bgp_update_receive (peer, size);
break; break;
case BGP_MSG_NOTIFY: case BGP_MSG_NOTIFY:
bgp_notify_receive (peer, size); bgp_notify_receive (peer, size);
break; break;
case BGP_MSG_KEEPALIVE: case BGP_MSG_KEEPALIVE:
peer->readtime = time(NULL); /* Last read timer reset */ peer->readtime = bgp_recent_clock ();
bgp_keepalive_receive (peer, size); bgp_keepalive_receive (peer, size);
break; break;
case BGP_MSG_ROUTE_REFRESH_NEW: case BGP_MSG_ROUTE_REFRESH_NEW: