/* $OpenBSD: tcp_debug.c,v 1.4 1999/01/11 02:01:35 deraadt Exp $ */ /* $NetBSD: tcp_debug.c,v 1.10 1996/02/13 23:43:36 christos Exp $ */ /* * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93 */ /* %%% portions-copyright-nrl-95 Portions of this software are Copyright 1995-1998 by Randall Atkinson, Ronald Lee, Daniel McDonald, Bao Phan, and Chris Winters. All Rights Reserved. All rights under this copyright have been assigned to the US Naval Research Laboratory (NRL). The NRL Copyright Notice and License Agreement Version 1.1 (January 17, 1995) applies to these portions of the software. You should have received a copy of the license with this software. If you didn't get a copy, you may request one from . */ #ifdef TCPDEBUG /* load symbolic names */ #define PRUREQUESTS #define TCPSTATES #define TCPTIMERS #define TANAMES #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET6 #include #include #endif /* INET6 */ #ifdef TCPDEBUG int tcpconsdebug = 0; #endif /* * Tcp debug routines */ void tcp_trace(act, ostate, tp, ti, req, len) short act, ostate; struct tcpcb *tp; struct tcpiphdr *ti; int req; int len; { #ifdef TCPDEBUG tcp_seq seq, ack; int flags; #endif struct tcp_debug *td = &tcp_debug[tcp_debx++]; #ifdef INET6 struct tcphdr *th; struct tcpipv6hdr *ti6 = (struct tcpipv6hdr *)ti; #endif if (tcp_debx == TCP_NDEBUG) tcp_debx = 0; td->td_time = iptime(); td->td_act = act; td->td_ostate = ostate; td->td_tcb = (caddr_t)tp; if (tp) td->td_cb = *tp; else bzero((caddr_t)&td->td_cb, sizeof (*tp)); #ifdef INET6 if (tp->pf == PF_INET6) { if (ti) { th = &ti6->ti6_t; td->td_ti6 = *ti6; } else { bzero(&td->td_ti6, sizeof(struct tcpipv6hdr)); } } else { if (ti) { th = &ti->ti_t; td->td_ti = *ti; } else { bzero(&td->td_ti, sizeof(struct tcpiphdr)); } } #else /* INET6 */ if (ti) td->td_ti = *ti; else bzero((caddr_t)&td->td_ti, sizeof (*ti)); #endif /* INET6 */ td->td_req = req; #ifdef TCPDEBUG if (tcpconsdebug == 0) return; if (tp) printf("%x %s:", tp, tcpstates[ostate]); else printf("???????? "); printf("%s ", tanames[act]); switch (act) { case TA_INPUT: case TA_OUTPUT: case TA_DROP: if (ti == 0) break; seq = th->th_seq; ack = th->th_ack; if (act == TA_OUTPUT) { seq = ntohl(seq); ack = ntohl(ack); } if (len) printf("[%x..%x)", seq, seq+len); else printf("%x", seq); printf("@%x, urp=%x", ack, th->th_urp); flags = th->th_flags; if (flags) { #ifndef lint char *cp = "<"; #define pf(f) { if (th->th_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); #endif printf(">"); } break; case TA_USER: printf("%s", prurequests[req&0xff]); if ((req & 0xff) == PRU_SLOWTIMO) printf("<%s>", tcptimers[req>>8]); break; } if (tp) printf(" -> %s", tcpstates[tp->t_state]); /* print out internal state of tp !?! */ printf("\n"); if (tp == 0) return; printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, tp->snd_max); printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); #endif /* TCPDEBUG */ }