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mateuszvis |
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/*!\file netinet/tcp_debu.h
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* TCP debugging.
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*/
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/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tcp_debug.h 8.1 (Berkeley) 6/10/93
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* $Id: tcp_debug.h,v 1.5 1996/04/13 12:45:57 bde Exp $
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*/
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#ifndef __NETINET_TCP_DEBUG_H
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#define __NETINET_TCP_DEBUG_H
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struct tcp_debug {
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n_time td_time;
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short td_act;
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short td_ostate;
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caddr_t td_tcb;
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struct tcpiphdr td_ti;
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short td_req;
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struct tcpcb td_cb;
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};
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#define TA_INPUT 0
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#define TA_OUTPUT 1
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#define TA_USER 2
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#define TA_RESPOND 3
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#define TA_DROP 4
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#ifdef TANAMES
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static char *tanames[] = {
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"input", "output", "user", "respond", "drop"
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};
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#endif
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#define TCP_NDEBUG 100
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#ifdef TCP_AUTO_DEBUG
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#include <sys/wtime.h>
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/* The following table is used as a circular buffer in which TCP
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* autotuning statistics can be kept.
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* It is intended that these statistics will be periodically read
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* by a debugging application using kvm.
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*/
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#define TAD_ENTRIES 1024 /* number of entries in monitor_table */
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struct tad_entry {
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u_long seq_no; /* tad entry number */
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struct timeval time; /* time of entry */
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u_long snd_cwnd; /* congestion window */
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u_long sb_hiwat; /* send socket buffer hi water mark */
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u_long sb_target_hiwat; /* target for same */
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u_long sb_cc; /* space used in send socket buf */
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u_long m_clused; /* m_clusters - m_clfree */
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u_short lport; /* local port number */
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u_short rport; /* remote port number */
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u_long debug; /* used for debugging */
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tcp_seq snd_max; /* highest sequence number sent */
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} tad_table[TAD_ENTRIES];
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extern struct tad_entry *tad_index; /* insert point */
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extern u_long tad_seq;
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extern u_long tad_debug;
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/* increment the index into the table
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*/
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#define TAD_INDEX_INCR tad_index = (struct tad_entry*)((u_long)tad_index + \
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sizeof(struct tad_entry)); \
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if ((u_long) tad_index >= \
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(u_long) &tad_table[TAD_ENTRIES]) \
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tad_index = tad_table;
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/* add a log entry to the table
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*/
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#define TAD_SNAPSHOT(tp, so) tad_index->seq_no = tad_seq++; \
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microtime(&(tad_index->time)); \
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tad_index->snd_cwnd = tp->snd_cwnd; \
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tad_index->sb_hiwat = so->so_snd.sb_hiwat; \
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tad_index->sb_target_hiwat = so->so_snd.sb_net_target; \
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tad_index->sb_cc = so->so_snd.sb_cc; \
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tad_index->m_clused = mbstat.m_clusters - mbstat.m_clfree;\
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tad_index->lport = tp->t_inpcb->inp_lport; \
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tad_index->rport = tp->t_inpcb->inp_fport; \
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tad_index->debug = tad_debug; \
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tad_index->snd_max = tp->snd_max; \
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TAD_INDEX_INCR;
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#endif /* TCP_AUTO_DEBUG */
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#endif /* __NETINET_TCP_DEBUG_H */
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