1 /* 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. 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 * from: @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93 34 * $Id: tcp_debug.c,v 1.7 1994/05/13 06:06:34 mycroft Exp $ 35 */ 36 37 #ifdef TCPDEBUG 38 /* load symbolic names */ 39 #define PRUREQUESTS 40 #define TCPSTATES 41 #define TCPTIMERS 42 #define TANAMES 43 #endif 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/mbuf.h> 48 #include <sys/socket.h> 49 #include <sys/socketvar.h> 50 #include <sys/protosw.h> 51 #include <sys/errno.h> 52 53 #include <net/route.h> 54 #include <net/if.h> 55 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/ip.h> 59 #include <netinet/in_pcb.h> 60 #include <netinet/ip_var.h> 61 #include <netinet/tcp.h> 62 #include <netinet/tcp_fsm.h> 63 #include <netinet/tcp_seq.h> 64 #include <netinet/tcp_timer.h> 65 #include <netinet/tcp_var.h> 66 #include <netinet/tcpip.h> 67 #include <netinet/tcp_debug.h> 68 69 #ifdef TCPDEBUG 70 int tcpconsdebug = 0; 71 #endif 72 /* 73 * Tcp debug routines 74 */ 75 void 76 tcp_trace(act, ostate, tp, ti, req) 77 short act, ostate; 78 struct tcpcb *tp; 79 struct tcpiphdr *ti; 80 int req; 81 { 82 tcp_seq seq, ack; 83 int len, flags; 84 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 85 86 if (tcp_debx == TCP_NDEBUG) 87 tcp_debx = 0; 88 td->td_time = iptime(); 89 td->td_act = act; 90 td->td_ostate = ostate; 91 td->td_tcb = (caddr_t)tp; 92 if (tp) 93 td->td_cb = *tp; 94 else 95 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 96 if (ti) 97 td->td_ti = *ti; 98 else 99 bzero((caddr_t)&td->td_ti, sizeof (*ti)); 100 td->td_req = req; 101 #ifdef TCPDEBUG 102 if (tcpconsdebug == 0) 103 return; 104 if (tp) 105 printf("%x %s:", tp, tcpstates[ostate]); 106 else 107 printf("???????? "); 108 printf("%s ", tanames[act]); 109 switch (act) { 110 111 case TA_INPUT: 112 case TA_OUTPUT: 113 case TA_DROP: 114 if (ti == 0) 115 break; 116 seq = ti->ti_seq; 117 ack = ti->ti_ack; 118 len = ti->ti_len; 119 if (act == TA_OUTPUT) { 120 seq = ntohl(seq); 121 ack = ntohl(ack); 122 len = ntohs((u_short)len); 123 } 124 if (act == TA_OUTPUT) 125 len -= sizeof (struct tcphdr); 126 if (len) 127 printf("[%x..%x)", seq, seq+len); 128 else 129 printf("%x", seq); 130 printf("@%x, urp=%x", ack, ti->ti_urp); 131 flags = ti->ti_flags; 132 if (flags) { 133 #ifndef lint 134 char *cp = "<"; 135 #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 136 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 137 #endif 138 printf(">"); 139 } 140 break; 141 142 case TA_USER: 143 printf("%s", prurequests[req&0xff]); 144 if ((req & 0xff) == PRU_SLOWTIMO) 145 printf("<%s>", tcptimers[req>>8]); 146 break; 147 } 148 if (tp) 149 printf(" -> %s", tcpstates[tp->t_state]); 150 /* print out internal state of tp !?! */ 151 printf("\n"); 152 if (tp == 0) 153 return; 154 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 155 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 156 tp->snd_max); 157 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 158 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 159 #endif /* TCPDEBUG */ 160 } 161