1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)tcp_debug.c 7.6 (Berkeley) 06/28/90 8 */ 9 10 #ifdef TCPDEBUG 11 /* load symbolic names */ 12 #define PRUREQUESTS 13 #define TCPSTATES 14 #define TCPTIMERS 15 #define TANAMES 16 #endif 17 18 #include "param.h" 19 #include "systm.h" 20 #include "mbuf.h" 21 #include "socket.h" 22 #include "socketvar.h" 23 #include "protosw.h" 24 #include "errno.h" 25 26 #include "../net/route.h" 27 #include "../net/if.h" 28 29 #include "in.h" 30 #include "in_systm.h" 31 #include "ip.h" 32 #include "in_pcb.h" 33 #include "ip_var.h" 34 #include "tcp.h" 35 #include "tcp_fsm.h" 36 #include "tcp_seq.h" 37 #include "tcp_timer.h" 38 #include "tcp_var.h" 39 #include "tcpip.h" 40 #include "tcp_debug.h" 41 42 #ifdef TCPDEBUG 43 int tcpconsdebug = 0; 44 #endif 45 /* 46 * Tcp debug routines 47 */ 48 tcp_trace(act, ostate, tp, ti, req) 49 short act, ostate; 50 struct tcpcb *tp; 51 struct tcpiphdr *ti; 52 int req; 53 { 54 tcp_seq seq, ack; 55 int len, flags; 56 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 57 58 if (tcp_debx == TCP_NDEBUG) 59 tcp_debx = 0; 60 td->td_time = iptime(); 61 td->td_act = act; 62 td->td_ostate = ostate; 63 td->td_tcb = (caddr_t)tp; 64 if (tp) 65 td->td_cb = *tp; 66 else 67 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 68 if (ti) 69 td->td_ti = *ti; 70 else 71 bzero((caddr_t)&td->td_ti, sizeof (*ti)); 72 td->td_req = req; 73 #ifdef TCPDEBUG 74 if (tcpconsdebug == 0) 75 return; 76 if (tp) 77 printf("%x %s:", tp, tcpstates[ostate]); 78 else 79 printf("???????? "); 80 printf("%s ", tanames[act]); 81 switch (act) { 82 83 case TA_INPUT: 84 case TA_OUTPUT: 85 case TA_DROP: 86 if (ti == 0) 87 break; 88 seq = ti->ti_seq; 89 ack = ti->ti_ack; 90 len = ti->ti_len; 91 if (act == TA_OUTPUT) { 92 seq = ntohl(seq); 93 ack = ntohl(ack); 94 len = ntohs((u_short)len); 95 } 96 if (act == TA_OUTPUT) 97 len -= sizeof (struct tcphdr); 98 if (len) 99 printf("[%x..%x)", seq, seq+len); 100 else 101 printf("%x", seq); 102 printf("@%x, urp=%x", ack, ti->ti_urp); 103 flags = ti->ti_flags; 104 if (flags) { 105 #ifndef lint 106 char *cp = "<"; 107 #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 108 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 109 #endif 110 printf(">"); 111 } 112 break; 113 114 case TA_USER: 115 printf("%s", prurequests[req&0xff]); 116 if ((req & 0xff) == PRU_SLOWTIMO) 117 printf("<%s>", tcptimers[req>>8]); 118 break; 119 } 120 if (tp) 121 printf(" -> %s", tcpstates[tp->t_state]); 122 /* print out internal state of tp !?! */ 123 printf("\n"); 124 if (tp == 0) 125 return; 126 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 127 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 128 tp->snd_max); 129 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 130 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 131 #endif /* TCPDEBUG */ 132 } 133