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/* BGP Engine pThread -- header
* Copyright (C) 2009 Chris Hall (GMCH), Highwayman
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _QUAGGA_BGP_ENGINE_H
#define _QUAGGA_BGP_ENGINE_H
#include "lib/misc.h"
#include "bgpd/bgpd.h"
#include "lib/mqueue.h"
#include "lib/qpnexus.h"
#include "lib/log.h"
/*==============================================================================
* BGP_ENGINE_DEBUG setting
*
* Set to 1 if defined, but blank.
* Set to QDEBUG if not defined.
*
* Force to 0 if BGP_ENGINE_NO_DEBUG is defined and not zero.
*
* So: defaults to same as QDEBUG, but no matter what QDEBUG is set to:
*
* * can set BGP_ENGINE_DEBUG == 0 to turn off debug
* * or set BGP_ENGINE_DEBUG != 0 to turn on debug
* * or set BGP_ENGINE_NO_DEBUG != to force debug off
*/
#ifdef BGP_ENGINE_DEBUG /* If defined, make it 1 or 0 */
# if IS_BLANK_OPTION(BGP_ENGINE_DEBUG)
# undef BGP_ENGINE_DEBUG
# define BGP_ENGINE_DEBUG 1
# endif
#else /* If not defined, follow QDEBUG */
# define BGP_ENGINE_DEBUG QDEBUG
#endif
#ifdef BGP_ENGINE_NO_DEBUG /* Override, if defined */
# if IS_NOT_ZERO_OPTION(BGP_ENGINE_NO_DEBUG)
# undef BGP_ENGINE_DEBUG
# define BGP_ENGINE_DEBUG 0
# endif
#endif
enum { bgp_engine_debug = BGP_ENGINE_DEBUG } ;
/*==============================================================================
*
*/
struct queue_stats
{
unsigned count ;
unsigned long total ;
unsigned max ;
unsigned recent ;
unsigned xon ;
unsigned event ;
unsigned update ;
} ;
static struct queue_stats bgp_engine_queue_stats ;
static struct queue_stats routing_engine_queue_stats ;
Inline void
bgp_queue_logging(const char* name, mqueue_queue mq, struct queue_stats* stats)
{
unsigned long average ;
unsigned av_i ;
unsigned av_f ;
unsigned my_count ;
mqueue_block mqb ;
++stats->count ;
qpt_mutex_lock(mq->mutex) ;
if (mq->count > stats->max)
stats->max = mq->count ;
if (mq->count > stats->recent)
stats->recent = mq->count ;
stats->total += mq->count ;
if (stats->count < 1000)
{
qpt_mutex_unlock(mq->mutex) ;
return ;
} ;
my_count = 0 ;
mqb = mq->head ;
while (mqb != NULL)
{
++my_count ;
mqb = mqb->next ;
} ;
assert(my_count == mq->count) ;
qpt_mutex_unlock(mq->mutex) ;
average = stats->total * 1000 ;
average = (average / stats->count) + 5 ;
av_i = average / 1000 ;
av_f = (average % 1000) / 10 ;
zlog_debug("%s queue: max=%u recent: max=%u av=%d.%.2d (%u) [x=%u e=%u u=%u]",
name, stats->max, stats->recent, av_i, av_f, stats->count,
stats->xon, stats->event, stats->update) ;
stats->recent = 0 ;
stats->count = 0 ;
stats->total = 0 ;
stats->event = 0 ;
stats->update = 0 ;
stats->xon = 0 ;
} ;
/* Send given message to the BGP Engine -- priority/ordinary
*/
Inline void
bgp_to_bgp_engine(mqueue_block mqb, mqb_rank_b priority)
{
mqueue_enqueue(bgp_nexus->queue, mqb, priority) ;
if (bgp_engine_debug)
bgp_queue_logging("BGP Engine", bgp_nexus->queue, &bgp_engine_queue_stats) ;
} ;
/*==============================================================================
*
*/
/* Send given message to the Routing Engine -- priority/ordinary
*/
Inline void
bgp_to_routing_engine(mqueue_block mqb, mqb_rank_b priority)
{
mqueue_enqueue(routing_nexus->queue, mqb, priority) ;
if (bgp_engine_debug)
bgp_queue_logging("Routing Engine", routing_nexus->queue,
&routing_engine_queue_stats) ;
} ;
#endif /* QUAGGA_BGP_ENGINE_H */
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