sctp_stats.c
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 /* 
  * $Id$
  * 
  * Copyright (C) 2010 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.
  */
 /** sctp statistics.
  * @file sctp_stats.c
  * @ingroup:  core (sctp)
  */
 /*
  * History:
  * --------
  *  2010-08-09  initial version (andrei)
 */
 
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 #ifdef USE_SCTP
 
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 #include "sctp_stats.h"
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 #ifdef USE_SCTP_STATS
 
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 #include "counters.h"
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 #include "sctp_server.h"
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 struct sctp_counters_h sctp_cnts_h;
 
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 enum sctp_info_req { SCTP_INFO_NONE, SCTP_INFO_CONN_NO, SCTP_INFO_TRACKED_NO };
 static counter_val_t sctp_info(counter_handle_t h, void* what);
 
 
 
 /* sctp counters definitions */
 counter_def_t sctp_cnt_defs[] =  {
 	{&sctp_cnts_h.established, "established", 0, 0, 0,
 		"incremented each time a new association is established."},
 	{&sctp_cnts_h.connect_failed, "connect_failed", 0, 0, 0,
 		"incremented each time a new outgoing connection fails."},
 	{&sctp_cnts_h.local_reject, "local_reject", 0, 0, 0,
 		"number of rejected incoming connections."},
 	{&sctp_cnts_h.remote_shutdown, "remote_shutdown", 0, 0, 0,
 		"incremented each time an association is closed by the peer."},
 	{&sctp_cnts_h.assoc_shutdown, "assoc_shutdown", 0, 0, 0,
 		"incremented each time an association is shutdown."},
 	{&sctp_cnts_h.comm_lost, "comm_lost", 0, 0, 0,
 		"incremented each time an established connection is close due to"
 			"some error."},
 	{&sctp_cnts_h.sendq_full, "sendq_full", 0, 0, 0,
 		"number of failed send attempt due to exceeded buffering capacity"
 	    " (full kernel buffers)."},
 	{&sctp_cnts_h.send_failed, "send_failed", 0, 0, 0,
 		"number of failed send attempt for any reason except full buffers."},
 	{&sctp_cnts_h.send_force_retry, "send_force_retry", 0, 0, 0,
 		"incremented each time a failed send is force-retried"
 			"(possible only if sctp_send_retries ! = 0"},
 	{0, "current_opened_connections", 0,
 		sctp_info, (void*)(long)SCTP_INFO_CONN_NO,
 		"number of currently opened associations."},
 	{0, "current_tracked_connections", 0,
 		sctp_info, (void*)(long)SCTP_INFO_TRACKED_NO,
 		"number of currently tracked associations."},
 	{0, 0, 0, 0, 0, 0 }
 };
 
 
 
 /** helper function for some stats (which are kept internally inside sctp).
  */
 static counter_val_t sctp_info(counter_handle_t h, void* what)
 {
 	enum sctp_info_req w;
 	struct sctp_gen_info i;
 
 	if (sctp_disable)
 		return 0;
 	w = (int)(long)what;
 	sctp_get_info(&i);
 	switch(w) {
 		case SCTP_INFO_CONN_NO:
 			return i.sctp_connections_no;
 		case SCTP_INFO_TRACKED_NO:
 			return i.sctp_tracked_no;
 		case SCTP_INFO_NONE:
 			break;
 	};
 	return 0;
 }
 
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 /** intialize sctp statistics.
  *  Must be called before forking.
  * @return < 0 on errror, 0 on success.
  */
 int sctp_stats_init()
 {
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 	if (counter_register_array("sctp", sctp_cnt_defs) < 0)
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 		goto error;
 	return 0;
 error:
 	return -1;
 }
 
 
 void sctp_stats_destroy()
 {
 	/* do nothing */
 }
 
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 #endif /* USE_SCTP_STATS */
 #endif /* USE_SCTP */
 
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 /* vi: set ts=4 sw=4 tw=79:ai:cindent: */