1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)tcp_debug.c 7.1 (Berkeley) 06/05/86 7 */ 8 9 #include "param.h" 10 #include "systm.h" 11 #include "mbuf.h" 12 #include "socket.h" 13 #include "socketvar.h" 14 #define PRUREQUESTS 15 #include "protosw.h" 16 #include "errno.h" 17 18 #include "../net/route.h" 19 #include "../net/if.h" 20 21 #include "in.h" 22 #include "in_pcb.h" 23 #include "in_systm.h" 24 #include "ip.h" 25 #include "ip_var.h" 26 #include "tcp.h" 27 #define TCPSTATES 28 #include "tcp_fsm.h" 29 #include "tcp_seq.h" 30 #define TCPTIMERS 31 #include "tcp_timer.h" 32 #include "tcp_var.h" 33 #include "tcpip.h" 34 #define TANAMES 35 #include "tcp_debug.h" 36 37 int tcpconsdebug = 0; 38 /* 39 * Tcp debug routines 40 */ 41 tcp_trace(act, ostate, tp, ti, req) 42 short act, ostate; 43 struct tcpcb *tp; 44 struct tcpiphdr *ti; 45 int req; 46 { 47 tcp_seq seq, ack; 48 int len, flags; 49 struct tcp_debug *td = &tcp_debug[tcp_debx++]; 50 51 if (tcp_debx == TCP_NDEBUG) 52 tcp_debx = 0; 53 td->td_time = iptime(); 54 td->td_act = act; 55 td->td_ostate = ostate; 56 td->td_tcb = (caddr_t)tp; 57 if (tp) 58 td->td_cb = *tp; 59 else 60 bzero((caddr_t)&td->td_cb, sizeof (*tp)); 61 if (ti) 62 td->td_ti = *ti; 63 else 64 bzero((caddr_t)&td->td_ti, sizeof (*ti)); 65 td->td_req = req; 66 if (tcpconsdebug == 0) 67 return; 68 if (tp) 69 printf("%x %s:", tp, tcpstates[ostate]); 70 else 71 printf("???????? "); 72 printf("%s ", tanames[act]); 73 switch (act) { 74 75 case TA_INPUT: 76 case TA_OUTPUT: 77 case TA_DROP: 78 if (ti == 0) 79 break; 80 seq = ti->ti_seq; 81 ack = ti->ti_ack; 82 len = ti->ti_len; 83 if (act == TA_OUTPUT) { 84 seq = ntohl(seq); 85 ack = ntohl(ack); 86 len = ntohs((u_short)len); 87 } 88 if (act == TA_OUTPUT) 89 len -= sizeof (struct tcphdr); 90 if (len) 91 printf("[%x..%x)", seq, seq+len); 92 else 93 printf("%x", seq); 94 printf("@%x, urp=%x", ack, ti->ti_urp); 95 flags = ti->ti_flags; 96 if (flags) { 97 #ifndef lint 98 char *cp = "<"; 99 #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } 100 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); 101 #endif 102 printf(">"); 103 } 104 break; 105 106 case TA_USER: 107 printf("%s", prurequests[req&0xff]); 108 if ((req & 0xff) == PRU_SLOWTIMO) 109 printf("<%s>", tcptimers[req>>8]); 110 break; 111 } 112 if (tp) 113 printf(" -> %s", tcpstates[tp->t_state]); 114 /* print out internal state of tp !?! */ 115 printf("\n"); 116 if (tp == 0) 117 return; 118 printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", 119 tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, 120 tp->snd_max); 121 printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", 122 tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); 123 } 124