tcp_debug.c revision 1.13.26.1
1 /* $NetBSD: tcp_debug.c,v 1.13.26.1 1999/06/28 06:37:01 itojun Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93 36 */ 37 38 #include "opt_inet.h" 39 40 #ifdef TCPDEBUG 41 /* load symbolic names */ 42 #define PRUREQUESTS 43 #define TCPSTATES 44 #define TCPTIMERS 45 #define TANAMES 46 #endif 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/mbuf.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 #include <sys/protosw.h> 54 #include <sys/errno.h> 55 56 #include <net/route.h> 57 #include <net/if.h> 58 59 #include <netinet/in.h> 60 #include <netinet/in_systm.h> 61 #include <netinet/ip.h> 62 #include <netinet/in_pcb.h> 63 #include <netinet/ip_var.h> 64 65 #ifdef INET6 66 #ifndef INET 67 #include <netinet/in.h> 68 #endif 69 #include <netinet/ip6.h> 70 #endif 71 72 #include <netinet/tcp.h> 73 #include <netinet/tcp_fsm.h> 74 #include <netinet/tcp_seq.h> 75 #include <netinet/tcp_timer.h> 76 #include <netinet/tcp_var.h> 77 #include <netinet/tcpip.h> 78 #include <netinet/tcp_debug.h> 79 80 #ifdef TCPDEBUG 81 int tcpconsdebug = 0; 82 #endif 83 /* 84 * Tcp debug routines 85 */ 86 void 87 tcp_trace(act, ostate, tp, m, req) 88 short act, ostate; 89 struct tcpcb *tp; 90 struct mbuf *m; 91 int req; 92 { 93 #ifdef TCPDEBUG 94 tcp_seq seq, ack; 95 int len, flags; 96 struct tcphdr *th; 97 #endif 98 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 99 100 if (tcp_debx == TCP_NDEBUG) 101 tcp_debx = 0; 102 td->td_time = iptime(); 103 td->td_act = act; 104 td->td_ostate = ostate; 105 td->td_tcb = (caddr_t)tp; 106 if (tp) 107 td->td_cb = *tp; 108 else 109 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 110 td->td_family = tp->t_family; 111 bzero((caddr_t)&td->td_ti, sizeof (td->td_ti)); 112 #ifdef INET6 113 bzero((caddr_t)&td->td_ti6, sizeof (td->td_ti6)); 114 #endif 115 #ifdef TCPDEBUG 116 th = NULL; 117 #endif 118 if (m) { 119 struct ip *ip; 120 ip = mtod(m, struct ip *); 121 switch (ip->ip_v) { 122 case 4: 123 if (m->m_len < sizeof(td->td_ti)) 124 break; 125 bcopy(mtod(m, caddr_t), &td->td_ti, sizeof(td->td_ti)); 126 #ifdef TCPDEBUG 127 th = (struct tcphdr *)((caddr_t)td->td_ti + sizeof(struct ip)); 128 #endif 129 break; 130 #ifdef INET6 131 case 6: 132 if (m->m_len < sizeof(td->td_ti6)) 133 break; 134 bcopy(mtod(m, caddr_t), &td->td_ti6, 135 sizeof(td->td_ti6)); 136 #ifdef TCPDEBUG 137 th = (struct tcphdr *)((caddr_t)td->td_ti6 + sizeof(struct ip6_hdr)); 138 #endif 139 break; 140 #endif 141 } 142 } 143 td->td_req = req; 144 #ifdef TCPDEBUG 145 if (tcpconsdebug == 0) 146 return; 147 if (tp) 148 printf("%x %s:", tp, tcpstates[ostate]); 149 else 150 printf("???????? "); 151 printf("%s ", tanames[act]); 152 switch (act) { 153 154 case TA_INPUT: 155 case TA_OUTPUT: 156 case TA_DROP: 157 if (th == 0) 158 break; 159 seq = th->th_seq; 160 ack = th->th_ack; 161 len = th->th_len; 162 if (act == TA_OUTPUT) { 163 seq = ntohl(seq); 164 ack = ntohl(ack); 165 len = ntohs((u_int16_t)len); 166 } 167 if (act == TA_OUTPUT) 168 len -= sizeof (struct tcphdr); 169 if (len) 170 printf("[%x..%x)", seq, seq+len); 171 else 172 printf("%x", seq); 173 printf("@%x, urp=%x", ack, th->th_urp); 174 flags = th->th_flags; 175 if (flags) { 176 #ifndef lint 177 char *cp = "<"; 178 #define pf(f) { if (th->th_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 179 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 180 #endif 181 printf(">"); 182 } 183 break; 184 185 case TA_USER: 186 printf("%s", prurequests[req&0xff]); 187 if ((req & 0xff) == PRU_SLOWTIMO) 188 printf("<%s>", tcptimers[req>>8]); 189 break; 190 } 191 if (tp) 192 printf(" -> %s", tcpstates[tp->t_state]); 193 /* print out internal state of tp !?! */ 194 printf("\n"); 195 if (tp == 0) 196 return; 197 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 198 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 199 tp->snd_max); 200 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 201 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 202 #endif /* TCPDEBUG */ 203 } 204
Indexes created Sat Sep 20 22:09:52 GMT 2025