tcp_debug.c revision 1.13.26.3
1 /* $NetBSD: tcp_debug.c,v 1.13.26.3 1999/11/30 13:35:34 itojun Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1982, 1986, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93 65 */ 66 67 #include "opt_inet.h" 68 69 #ifdef TCPDEBUG 70 /* load symbolic names */ 71 #define PRUREQUESTS 72 #define TCPSTATES 73 #define TCPTIMERS 74 #define TANAMES 75 #endif 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/mbuf.h> 80 #include <sys/socket.h> 81 #include <sys/socketvar.h> 82 #include <sys/protosw.h> 83 #include <sys/errno.h> 84 85 #include <net/route.h> 86 #include <net/if.h> 87 88 #include <netinet/in.h> 89 #include <netinet/in_systm.h> 90 #include <netinet/ip.h> 91 #include <netinet/in_pcb.h> 92 #include <netinet/ip_var.h> 93 94 #ifdef INET6 95 #ifndef INET 96 #include <netinet/in.h> 97 #endif 98 #include <netinet/ip6.h> 99 #endif 100 101 #include <netinet/tcp.h> 102 #include <netinet/tcp_fsm.h> 103 #include <netinet/tcp_seq.h> 104 #include <netinet/tcp_timer.h> 105 #include <netinet/tcp_var.h> 106 #include <netinet/tcpip.h> 107 #include <netinet/tcp_debug.h> 108 109 #ifdef TCPDEBUG 110 int tcpconsdebug = 0; 111 #endif 112 /* 113 * Tcp debug routines 114 */ 115 void 116 tcp_trace(act, ostate, tp, m, req) 117 short act, ostate; 118 struct tcpcb *tp; 119 struct mbuf *m; 120 int req; 121 { 122 #ifdef TCPDEBUG 123 tcp_seq seq, ack; 124 int len, flags; 125 struct tcphdr *th; 126 #endif 127 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 128 129 if (tcp_debx == TCP_NDEBUG) 130 tcp_debx = 0; 131 td->td_time = iptime(); 132 td->td_act = act; 133 td->td_ostate = ostate; 134 td->td_tcb = (caddr_t)tp; 135 if (tp) 136 td->td_cb = *tp; 137 else 138 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 139 td->td_family = tp->t_family; 140 bzero((caddr_t)&td->td_ti, sizeof (td->td_ti)); 141 #ifdef INET6 142 bzero((caddr_t)&td->td_ti6, sizeof (td->td_ti6)); 143 #endif 144 #ifdef TCPDEBUG 145 th = NULL; 146 #endif 147 if (m) { 148 struct ip *ip; 149 ip = mtod(m, struct ip *); 150 switch (ip->ip_v) { 151 case 4: 152 if (m->m_len < sizeof(td->td_ti)) 153 break; 154 bcopy(mtod(m, caddr_t), &td->td_ti, sizeof(td->td_ti)); 155 #ifdef TCPDEBUG 156 th = (struct tcphdr *)((caddr_t)td->td_ti + sizeof(struct ip)); 157 #endif 158 break; 159 #ifdef INET6 160 case 6: 161 if (m->m_len < sizeof(td->td_ti6)) 162 break; 163 bcopy(mtod(m, caddr_t), &td->td_ti6, 164 sizeof(td->td_ti6)); 165 #ifdef TCPDEBUG 166 th = (struct tcphdr *)((caddr_t)td->td_ti6 + sizeof(struct ip6_hdr)); 167 #endif 168 break; 169 #endif 170 } 171 } 172 td->td_req = req; 173 #ifdef TCPDEBUG 174 if (tcpconsdebug == 0) 175 return; 176 if (tp) 177 printf("%x %s:", tp, tcpstates[ostate]); 178 else 179 printf("???????? "); 180 printf("%s ", tanames[act]); 181 switch (act) { 182 183 case TA_INPUT: 184 case TA_OUTPUT: 185 case TA_DROP: 186 if (th == 0) 187 break; 188 seq = th->th_seq; 189 ack = th->th_ack; 190 len = th->th_len; 191 if (act == TA_OUTPUT) { 192 seq = ntohl(seq); 193 ack = ntohl(ack); 194 len = ntohs((u_int16_t)len); 195 } 196 if (act == TA_OUTPUT) 197 len -= sizeof (struct tcphdr); 198 if (len) 199 printf("[%x..%x)", seq, seq+len); 200 else 201 printf("%x", seq); 202 printf("@%x, urp=%x", ack, th->th_urp); 203 flags = th->th_flags; 204 if (flags) { 205 #ifndef lint 206 char *cp = "<"; 207 #define pf(f) { if (th->th_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 208 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 209 #endif 210 printf(">"); 211 } 212 break; 213 214 case TA_USER: 215 printf("%s", prurequests[req&0xff]); 216 if ((req & 0xff) == PRU_SLOWTIMO) 217 printf("<%s>", tcptimers[req>>8]); 218 break; 219 } 220 if (tp) 221 printf(" -> %s", tcpstates[tp->t_state]); 222 /* print out internal state of tp !?! */ 223 printf("\n"); 224 if (tp == 0) 225 return; 226 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 227 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 228 tp->snd_max); 229 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 230 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 231 #endif /* TCPDEBUG */ 232 } 233
Indexes created Sat Sep 20 22:09:52 GMT 2025