1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)tcp_debug.c 7.6 (Berkeley) 6/28/90 34 */ 35 36 #ifdef TCPDEBUG 37 /* load symbolic names */ 38 #define PRUREQUESTS 39 #define TCPSTATES 40 #define TCPTIMERS 41 #define TANAMES 42 #endif 43 44 #include "param.h" 45 #include "systm.h" 46 #include "mbuf.h" 47 #include "socket.h" 48 #include "socketvar.h" 49 #include "protosw.h" 50 #include "errno.h" 51 52 #include "../net/route.h" 53 #include "../net/if.h" 54 55 #include "in.h" 56 #include "in_systm.h" 57 #include "ip.h" 58 #include "in_pcb.h" 59 #include "ip_var.h" 60 #include "tcp.h" 61 #include "tcp_fsm.h" 62 #include "tcp_seq.h" 63 #include "tcp_timer.h" 64 #include "tcp_var.h" 65 #include "tcpip.h" 66 #include "tcp_debug.h" 67 68 #ifdef TCPDEBUG 69 int tcpconsdebug = 0; 70 #endif 71 /* 72 * Tcp debug routines 73 */ 74 tcp_trace(act, ostate, tp, ti, req) 75 short act, ostate; 76 struct tcpcb *tp; 77 struct tcpiphdr *ti; 78 int req; 79 { 80 tcp_seq seq, ack; 81 int len, flags; 82 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 83 84 if (tcp_debx == TCP_NDEBUG) 85 tcp_debx = 0; 86 td->td_time = iptime(); 87 td->td_act = act; 88 td->td_ostate = ostate; 89 td->td_tcb = (caddr_t)tp; 90 if (tp) 91 td->td_cb = *tp; 92 else 93 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 94 if (ti) 95 td->td_ti = *ti; 96 else 97 bzero((caddr_t)&td->td_ti, sizeof (*ti)); 98 td->td_req = req; 99 #ifdef TCPDEBUG 100 if (tcpconsdebug == 0) 101 return; 102 if (tp) 103 printf("%x %s:", tp, tcpstates[ostate]); 104 else 105 printf("???????? "); 106 printf("%s ", tanames[act]); 107 switch (act) { 108 109 case TA_INPUT: 110 case TA_OUTPUT: 111 case TA_DROP: 112 if (ti == 0) 113 break; 114 seq = ti->ti_seq; 115 ack = ti->ti_ack; 116 len = ti->ti_len; 117 if (act == TA_OUTPUT) { 118 seq = ntohl(seq); 119 ack = ntohl(ack); 120 len = ntohs((u_short)len); 121 } 122 if (act == TA_OUTPUT) 123 len -= sizeof (struct tcphdr); 124 if (len) 125 printf("[%x..%x)", seq, seq+len); 126 else 127 printf("%x", seq); 128 printf("@%x, urp=%x", ack, ti->ti_urp); 129 flags = ti->ti_flags; 130 if (flags) { 131 #ifndef lint 132 char *cp = "<"; 133 #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 134 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 135 #endif 136 printf(">"); 137 } 138 break; 139 140 case TA_USER: 141 printf("%s", prurequests[req&0xff]); 142 if ((req & 0xff) == PRU_SLOWTIMO) 143 printf("<%s>", tcptimers[req>>8]); 144 break; 145 } 146 if (tp) 147 printf(" -> %s", tcpstates[tp->t_state]); 148 /* print out internal state of tp !?! */ 149 printf("\n"); 150 if (tp == 0) 151 return; 152 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 153 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 154 tp->snd_max); 155 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 156 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 157 #endif /* TCPDEBUG */ 158 } 159