tcp_debug.c revision 1.16
1 /* $NetBSD: tcp_debug.c,v 1.16 2001/07/08 16:18:57 abs 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 #include "opt_tcp_debug.h" 69 70 #ifdef TCP_DEBUG 71 /* load symbolic names */ 72 #define PRUREQUESTS 73 #define TCPSTATES 74 #define TCPTIMERS 75 #define TANAMES 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 struct tcp_debug tcp_debug[TCP_NDEBUG]; 110 int tcp_debx; 111 int tcpconsdebug = 0; 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 tcp_seq seq, ack; 123 int len, flags; 124 struct tcphdr *th; 125 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 126 127 if (tcp_debx == TCP_NDEBUG) 128 tcp_debx = 0; 129 td->td_time = iptime(); 130 td->td_act = act; 131 td->td_ostate = ostate; 132 td->td_tcb = (caddr_t)tp; 133 if (tp) 134 td->td_cb = *tp; 135 else 136 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 137 td->td_family = tp->t_family; 138 bzero((caddr_t)&td->td_ti, sizeof (td->td_ti)); 139 #ifdef INET6 140 bzero((caddr_t)&td->td_ti6, sizeof (td->td_ti6)); 141 #endif 142 th = NULL; 143 if (m) { 144 struct ip *ip; 145 ip = mtod(m, struct ip *); 146 switch (ip->ip_v) { 147 case 4: 148 if (m->m_len < sizeof(td->td_ti)) 149 break; 150 bcopy(mtod(m, caddr_t), &td->td_ti, sizeof(td->td_ti)); 151 th = (struct tcphdr *)((caddr_t)&td->td_ti + sizeof(struct ip)); 152 break; 153 #ifdef INET6 154 case 6: 155 if (m->m_len < sizeof(td->td_ti6)) 156 break; 157 bcopy(mtod(m, caddr_t), &td->td_ti6, 158 sizeof(td->td_ti6)); 159 th = (struct tcphdr *)((caddr_t)&td->td_ti6 + sizeof(struct ip6_hdr)); 160 break; 161 #endif 162 } 163 } 164 td->td_req = req; 165 if (tcpconsdebug == 0) 166 return; 167 if (tp) 168 printf("%p %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 (th == 0) 178 break; 179 seq = th->th_seq; 180 ack = th->th_ack; 181 len = m->m_pkthdr.len; 182 if (act == TA_OUTPUT) { 183 seq = ntohl(seq); 184 ack = ntohl(ack); 185 len = ntohs((u_int16_t)len); 186 } 187 if (act == TA_OUTPUT) 188 len -= sizeof (struct tcphdr); 189 if (len) 190 printf("[%x..%x)", seq, seq+len); 191 else 192 printf("%x", seq); 193 printf("@%x, urp=%x", ack, th->th_urp); 194 flags = th->th_flags; 195 if (flags) { 196 #ifndef lint 197 char *cp = "<"; 198 #define pf(f) { if (th->th_flags&__CONCAT(TH_,f)) { printf("%s%s", cp, "f"); cp = ","; } } 199 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 200 #endif 201 printf(">"); 202 } 203 break; 204 205 case TA_USER: 206 printf("%s", prurequests[req&0xff]); 207 if ((req & 0xff) == PRU_SLOWTIMO) 208 printf("<%s>", tcptimers[req>>8]); 209 break; 210 } 211 if (tp) 212 printf(" -> %s", tcpstates[tp->t_state]); 213 /* print out internal state of tp !?! */ 214 printf("\n"); 215 if (tp == 0) 216 return; 217 printf("\trcv_(nxt,wnd,up) (%x,%lx,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 218 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 219 tp->snd_max); 220 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%lx)\n", 221 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 222 } 223 #endif /* TCP_DEBUG */ 224
Indexes created Sat Sep 20 22:09:52 GMT 2025