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/*
* Copyright (C) 2009 iptelorg GmbH
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*! \file
* \brief Kamailio core :: tcp_stats.h - tcp statistics macros
* \ingroup core
*/
#ifndef __tcp_stats_h
#define __tcp_stats_h
/* enable tcp stats by default */
#ifndef NO_TCP_STATS
#define USE_TCP_STATS
#endif
#ifndef USE_TCP_STATS
#define INIT_TCP_STATS() 0 /* success */
#define DESTROY_TCP_STATS()
#define TCP_STATS_ESTABLISHED(state)
#define TCP_STATS_CONNECT_FAILED()
#define TCP_STATS_LOCAL_REJECT()
#define TCP_STATS_CON_TIMEOUT()
#define TCP_STATS_CON_RESET()
#define TCP_STATS_SEND_TIMEOUT()
#define TCP_STATS_SENDQ_FULL()
#else /* USE_TCP_STATS */
#include "counters.h"
struct tcp_counters_h {
counter_handle_t established;
counter_handle_t passive_open;
counter_handle_t connect_success;
counter_handle_t connect_failed;
counter_handle_t local_reject;
counter_handle_t con_timeout;
counter_handle_t con_reset;
counter_handle_t send_timeout;
counter_handle_t sendq_full;
};
extern struct tcp_counters_h tcp_cnts_h;
int tcp_stats_init(void);
void tcp_stats_destroy(void);
#define INIT_TCP_STATS() tcp_stats_init()
#define DESTROY_TCP_STATS() tcp_stats_destroy()
/** called each time a new tcp connection is established.
* @param state - S_CONN_ACCEPT if it was the result of an accept()
* - S_CONN_CONNECT if it was the result of a connect()
* Note: in general it will be called when the first packet was received or
* sent on the new connection and not immediately after accept() or
* connect()
*/
#define TCP_STATS_ESTABLISHED(state) \
do { \
counter_inc(tcp_cnts_h.established); \
if (state == S_CONN_ACCEPT) \
counter_inc(tcp_cnts_h.passive_open); \
else \
counter_inc(tcp_cnts_h.connect_success); \
}while(0)
/** called each time a new outgoing connection fails. */
#define TCP_STATS_CONNECT_FAILED() \
counter_inc(tcp_cnts_h.connect_failed)
/** called each time a new incoming connection is rejected.
* (accept() denied due to maximum number of TCP connections being exceeded)
*/
#define TCP_STATS_LOCAL_REJECT() \
counter_inc(tcp_cnts_h.local_reject)
/** called each time a connection lifetime expires.
* (the connection is closed for being idle for too long)
*/
#define TCP_STATS_CON_TIMEOUT() \
counter_inc(tcp_cnts_h.con_timeout)
/** called each time a TCP RST is received on an established connection. */
#define TCP_STATS_CON_RESET() \
counter_inc(tcp_cnts_h.con_reset)
/** called each time a send operation fails due to a timeout.
* FIXME: it works only in async mode (in sync. mode a send might timeout
* but the stats won't be increased).
*/
#define TCP_STATS_SEND_TIMEOUT() \
counter_inc(tcp_cnts_h.send_timeout)
/** called each time a send fails due to the buffering capacity being exceeded.
* (used only in tcp async mode)
*/
#define TCP_STATS_SENDQ_FULL() \
counter_inc(tcp_cnts_h.sendq_full)
#endif /* USE_TCP_STATS */
#endif /*__tcp_stats_h*/
/* vi: set ts=4 sw=4 tw=79:ai:cindent: */
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