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