250 lines
7.6 KiB
C
250 lines
7.6 KiB
C
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/*
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* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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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.c 8.1 (Berkeley) 6/10/93
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* $FreeBSD: src/sys/netinet/tcp_debug.c,v 1.16.2.1 2000/07/15 07:14:31 kris Exp $
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*/
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#ifndef INET
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#error The option TCPDEBUG requires option INET.
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#endif
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#if TCPDEBUG
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/* load symbolic names */
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#define PRUREQUESTS
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#define TCPSTATES
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#define TCPTIMERS
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#define TANAMES
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/protosw.h>
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#include <sys/sysctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/ip_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <netinet/tcpip.h>
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#include <netinet/tcp_debug.h>
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#if TCPDEBUG
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__private_extern__ int tcpconsdebug = 0;
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SYSCTL_INT(_net_inet_tcp, OID_AUTO, tcpconsdebug, CTLFLAG_RW | CTLFLAG_LOCKED,
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&tcpconsdebug, 0, "Turn tcp debugging on or off");
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#endif
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static struct tcp_debug tcp_debug[TCP_NDEBUG];
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static int tcp_debx;
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/*
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* Tcp debug routines
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*/
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void
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tcp_trace(act, ostate, tp, ipgen, th, req)
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short act, ostate;
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struct tcpcb *tp;
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void *ipgen;
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struct tcphdr *th;
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int req;
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{
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int isipv6;
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tcp_seq seq, ack;
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int len, flags;
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struct tcp_debug *td = &tcp_debug[tcp_debx++];
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isipv6 = (ipgen != NULL && ((struct ip *)ipgen)->ip_v == 6) ? 1 : 0;
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td->td_family = (isipv6 != 0) ? AF_INET6 : AF_INET;
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if (tcp_debx == TCP_NDEBUG) {
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tcp_debx = 0;
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}
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td->td_time = iptime();
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td->td_act = act;
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td->td_ostate = ostate;
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td->td_tcb = (caddr_t)tp;
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if (tp) {
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td->td_cb = *tp;
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} else {
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bzero((caddr_t)&td->td_cb, sizeof(*tp));
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}
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if (ipgen) {
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switch (td->td_family) {
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case AF_INET:
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bcopy((caddr_t)ipgen, (caddr_t)&td->td_ti.ti_i,
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sizeof(td->td_ti.ti_i));
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bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf));
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break;
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case AF_INET6:
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bcopy((caddr_t)ipgen, (caddr_t)td->td_ip6buf,
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sizeof(td->td_ip6buf));
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bzero((caddr_t)&td->td_ti.ti_i,
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sizeof(td->td_ti.ti_i));
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break;
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default:
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bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf));
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bzero((caddr_t)&td->td_ti.ti_i,
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sizeof(td->td_ti.ti_i));
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break;
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}
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} else {
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bzero((caddr_t)&td->td_ti.ti_i, sizeof(td->td_ti.ti_i));
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bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf));
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}
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if (th) {
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switch (td->td_family) {
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case AF_INET:
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td->td_ti.ti_t = *th;
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bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th));
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break;
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case AF_INET6:
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td->td_ti6.th = *th;
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bzero((caddr_t)&td->td_ti.ti_t,
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sizeof(td->td_ti.ti_t));
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break;
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default:
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bzero((caddr_t)&td->td_ti.ti_t,
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sizeof(td->td_ti.ti_t));
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bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th));
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break;
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}
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} else {
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bzero((caddr_t)&td->td_ti.ti_t, sizeof(td->td_ti.ti_t));
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bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th));
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}
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td->td_req = req;
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#if TCPDEBUG
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if (tcpconsdebug == 0) {
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return;
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}
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if (tp) {
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printf("%x %s:", tp, tcpstates[ostate]);
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} else {
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printf("???????? ");
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}
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printf("%s ", tanames[act]);
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switch (act) {
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case TA_INPUT:
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case TA_OUTPUT:
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case TA_DROP:
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if (ipgen == NULL || th == NULL) {
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break;
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}
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seq = th->th_seq;
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ack = th->th_ack;
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len = isipv6 ? ((struct ip6_hdr *)ipgen)->ip6_plen : ((struct ip *)ipgen)->ip_len;
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if (act == TA_OUTPUT) {
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seq = ntohl(seq);
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ack = ntohl(ack);
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len = ntohs((u_short)len);
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}
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if (act == TA_OUTPUT) {
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len -= sizeof(struct tcphdr);
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}
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if (len) {
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printf("[%x..%x)", seq, seq + len);
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} else {
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printf("%x", seq);
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}
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printf("@%x, urp=%x", ack, th->th_urp);
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flags = th->th_flags;
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if (flags) {
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char *cp = "<";
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#define pf(f) { \
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if (th->th_flags & TH_##f) { \
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printf("%s%s", cp, #f); \
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cp = ","; \
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} \
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}
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pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
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printf(">");
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}
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break;
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case TA_USER:
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printf("%s", prurequests[req & 0xff]);
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if ((req & 0xff) == PRU_SLOWTIMO) {
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printf("<%s>", tcptimers[req >> 8]);
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}
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break;
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}
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if (tp) {
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printf(" -> %s", tcpstates[tp->t_state]);
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}
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/* print out internal state of tp !?! */
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printf("\n");
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if (tp == 0) {
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return;
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}
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printf(
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"\trcv_(nxt,wnd,up) (%lx,%lx,%lx) snd_(una,nxt,max) (%lx,%lx,%lx)\n",
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(uint32_t)tp->rcv_nxt, tp->rcv_wnd, (uint32_t)tp->rcv_up,
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(uint32_t)tp->snd_una, (uint32_t)tp->snd_nxt, (uint32_t)tp->snd_max);
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printf("\tsnd_(wl1,wl2,wnd) (%lx,%lx,%lx)\n",
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(uint32_t)tp->snd_wl1, (uint32_t)tp->snd_wl2, tp->snd_wnd);
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#endif /* TCPDEBUG */
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}
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