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 are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)tcp_debug.c 7.4 (Berkeley) 04/03/90 18 */ 19 20 #include "param.h" 21 #include "systm.h" 22 #include "mbuf.h" 23 #include "socket.h" 24 #include "socketvar.h" 25 #define PRUREQUESTS 26 #include "protosw.h" 27 #include "errno.h" 28 29 #include "../net/route.h" 30 #include "../net/if.h" 31 32 #include "in.h" 33 #include "in_systm.h" 34 #include "ip.h" 35 #include "in_pcb.h" 36 #include "ip_var.h" 37 #include "tcp.h" 38 #define TCPSTATES 39 #include "tcp_fsm.h" 40 #include "tcp_seq.h" 41 #define TCPTIMERS 42 #include "tcp_timer.h" 43 #include "tcp_var.h" 44 #include "tcpip.h" 45 #define TANAMES 46 #include "tcp_debug.h" 47 48 int tcpconsdebug = 0; 49 /* 50 * Tcp debug routines 51 */ 52 tcp_trace(act, ostate, tp, ti, req) 53 short act, ostate; 54 struct tcpcb *tp; 55 struct tcpiphdr *ti; 56 int req; 57 { 58 tcp_seq seq, ack; 59 int len, flags; 60 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 61 62 if (tcp_debx == TCP_NDEBUG) 63 tcp_debx = 0; 64 td->td_time = iptime(); 65 td->td_act = act; 66 td->td_ostate = ostate; 67 td->td_tcb = (caddr_t)tp; 68 if (tp) 69 td->td_cb = *tp; 70 else 71 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 72 if (ti) 73 td->td_ti = *ti; 74 else 75 bzero((caddr_t)&td->td_ti, sizeof (*ti)); 76 td->td_req = req; 77 if (tcpconsdebug == 0) 78 return; 79 if (tp) 80 printf("%x %s:", tp, tcpstates[ostate]); 81 else 82 printf("???????? "); 83 printf("%s ", tanames[act]); 84 switch (act) { 85 86 case TA_INPUT: 87 case TA_OUTPUT: 88 case TA_DROP: 89 if (ti == 0) 90 break; 91 seq = ti->ti_seq; 92 ack = ti->ti_ack; 93 len = ti->ti_len; 94 if (act == TA_OUTPUT) { 95 seq = ntohl(seq); 96 ack = ntohl(ack); 97 len = ntohs((u_short)len); 98 } 99 if (act == TA_OUTPUT) 100 len -= sizeof (struct tcphdr); 101 if (len) 102 printf("[%x..%x)", seq, seq+len); 103 else 104 printf("%x", seq); 105 printf("@%x, urp=%x", ack, ti->ti_urp); 106 flags = ti->ti_flags; 107 if (flags) { 108 #ifndef lint 109 char *cp = "<"; 110 #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 111 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 112 #endif 113 printf(">"); 114 } 115 break; 116 117 case TA_USER: 118 printf("%s", prurequests[req&0xff]); 119 if ((req & 0xff) == PRU_SLOWTIMO) 120 printf("<%s>", tcptimers[req>>8]); 121 break; 122 } 123 if (tp) 124 printf(" -> %s", tcpstates[tp->t_state]); 125 /* print out internal state of tp !?! */ 126 printf("\n"); 127 if (tp == 0) 128 return; 129 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 130 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 131 tp->snd_max); 132 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 133 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 134 } 135