1 /* $OpenBSD: tcp_debug.c,v 1.10 2001/06/08 03:53:46 angelos Exp $ */ 2 /* $NetBSD: tcp_debug.c,v 1.10 1996/02/13 23:43:36 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1982, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)COPYRIGHT 1.1 (NRL) 17 January 1995 37 * 38 * NRL grants permission for redistribution and use in source and binary 39 * forms, with or without modification, of the software and documentation 40 * created at NRL provided that the following conditions are met: 41 * 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgements: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * This product includes software developed at the Information 52 * Technology Division, US Naval Research Laboratory. 53 * 4. Neither the name of the NRL nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THE SOFTWARE PROVIDED BY NRL IS PROVIDED BY NRL AND CONTRIBUTORS ``AS 58 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 60 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NRL OR 61 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 62 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 63 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 64 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 65 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 66 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 67 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 * 69 * The views and conclusions contained in the software and documentation 70 * are those of the authors and should not be interpreted as representing 71 * official policies, either expressed or implied, of the US Naval 72 * Research Laboratory (NRL). 73 */ 74 75 #ifdef TCPDEBUG 76 /* load symbolic names */ 77 #define PRUREQUESTS 78 #define TCPSTATES 79 #define TCPTIMERS 80 #define TANAMES 81 #endif 82 83 #include <sys/param.h> 84 #include <sys/systm.h> 85 #include <sys/mbuf.h> 86 #include <sys/socket.h> 87 88 #include <net/route.h> 89 #include <net/if.h> 90 91 #include <netinet/in.h> 92 #include <netinet/in_systm.h> 93 #include <netinet/ip.h> 94 #include <netinet/in_pcb.h> 95 #include <netinet/ip_var.h> 96 #include <netinet/tcp.h> 97 #include <netinet/tcp_timer.h> 98 #include <netinet/tcp_var.h> 99 #include <netinet/tcpip.h> 100 #include <netinet/tcp_debug.h> 101 102 #ifdef INET6 103 #ifndef INET 104 #include <netinet/in.h> 105 #endif 106 #include <netinet/ip6.h> 107 #endif /* INET6 */ 108 109 #ifdef TCPDEBUG 110 int tcpconsdebug = 0; 111 #endif 112 /* 113 * Tcp debug routines 114 */ 115 void 116 tcp_trace(act, ostate, tp, headers, req, len) 117 short act, ostate; 118 struct tcpcb *tp; 119 caddr_t headers; 120 int req; 121 int len; 122 { 123 #ifdef TCPDEBUG 124 tcp_seq seq, ack; 125 int flags; 126 #endif 127 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 128 struct tcpiphdr *ti = (struct tcpiphdr *)headers; 129 struct tcphdr *th; 130 #ifdef INET6 131 struct tcpipv6hdr *ti6 = (struct tcpipv6hdr *)ti; 132 #endif 133 134 if (tcp_debx == TCP_NDEBUG) 135 tcp_debx = 0; 136 td->td_time = iptime(); 137 td->td_act = act; 138 td->td_ostate = ostate; 139 td->td_tcb = (caddr_t)tp; 140 if (tp) 141 td->td_cb = *tp; 142 else 143 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 144 #ifdef INET6 145 if (tp->pf == PF_INET6) { 146 if (ti) { 147 th = &ti6->ti6_t; 148 td->td_ti6 = *ti6; 149 } else { 150 bzero(&td->td_ti6, sizeof(struct tcpipv6hdr)); 151 } 152 } else 153 #endif /* INET6 */ 154 { 155 if (ti) { 156 th = &ti->ti_t; 157 td->td_ti = *ti; 158 } else { 159 bzero(&td->td_ti, sizeof(struct tcpiphdr)); 160 } 161 } 162 163 td->td_req = req; 164 #ifdef TCPDEBUG 165 if (tcpconsdebug == 0) 166 return; 167 if (tp) 168 printf("%x %s:", tp, tcpstates[ostate]); 169 else 170 printf("???????? "); 171 printf("%s ", tanames[act]); 172 switch (act) { 173 174 case TA_INPUT: 175 case TA_OUTPUT: 176 case TA_DROP: 177 if (ti == 0) 178 break; 179 seq = th->th_seq; 180 ack = th->th_ack; 181 if (act == TA_OUTPUT) { 182 seq = ntohl(seq); 183 ack = ntohl(ack); 184 } 185 if (len) 186 printf("[%x..%x)", seq, seq+len); 187 else 188 printf("%x", seq); 189 printf("@%x, urp=%x", ack, th->th_urp); 190 flags = th->th_flags; 191 if (flags) { 192 #ifndef lint 193 char *cp = "<"; 194 #define pf(f) { if (th->th_flags&TH_##f) { printf("%s%s", cp, "f"); cp = ","; } } 195 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 196 #endif 197 printf(">"); 198 } 199 break; 200 201 case TA_USER: 202 printf("%s", prurequests[req&0xff]); 203 if ((req & 0xff) == PRU_SLOWTIMO) 204 printf("<%s>", tcptimers[req>>8]); 205 break; 206 } 207 if (tp) 208 printf(" -> %s", tcpstates[tp->t_state]); 209 /* print out internal state of tp !?! */ 210 printf("\n"); 211 if (tp == 0) 212 return; 213 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 214 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 215 tp->snd_max); 216 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 217 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 218 #endif /* TCPDEBUG */ 219 } 220