[39e6e65a] | 1 | /* |
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| 2 | * Copyright (c) 1982, 1986, 1993 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. All advertising materials mentioning features or use of this software |
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| 14 | * must display the following acknowledgement: |
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| 15 | * This product includes software developed by the University of |
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| 16 | * California, Berkeley and its contributors. |
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| 17 | * 4. Neither the name of the University nor the names of its contributors |
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| 18 | * may be used to endorse or promote products derived from this software |
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| 19 | * without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 31 | * SUCH DAMAGE. |
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| 32 | * |
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| 33 | * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93 |
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| 34 | * $Id$ |
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| 35 | */ |
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| 36 | |
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| 37 | #include "opt_tcpdebug.h" |
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| 38 | |
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| 39 | #ifdef TCPDEBUG |
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| 40 | /* load symbolic names */ |
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| 41 | #define PRUREQUESTS |
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| 42 | #define TCPSTATES |
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| 43 | #define TCPTIMERS |
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| 44 | #define TANAMES |
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| 45 | #endif |
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| 46 | |
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| 47 | #include <sys/param.h> |
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| 48 | #include <sys/queue.h> |
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| 49 | #include <sys/systm.h> |
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| 50 | #include <sys/mbuf.h> |
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| 51 | #include <sys/socket.h> |
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| 52 | #include <sys/socketvar.h> |
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| 53 | #include <sys/protosw.h> |
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| 54 | #include <sys/errno.h> |
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| 55 | |
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| 56 | #include <net/route.h> |
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| 57 | #include <net/if.h> |
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| 58 | |
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| 59 | #include <netinet/in.h> |
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| 60 | #include <netinet/in_systm.h> |
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| 61 | #include <netinet/ip.h> |
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| 62 | #include <netinet/in_pcb.h> |
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| 63 | #include <netinet/ip_var.h> |
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| 64 | #include <netinet/tcp.h> |
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| 65 | #include <netinet/tcp_fsm.h> |
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| 66 | #include <netinet/tcp_seq.h> |
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| 67 | #include <netinet/tcp_timer.h> |
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| 68 | #include <netinet/tcp_var.h> |
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| 69 | #include <netinet/tcpip.h> |
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| 70 | #include <netinet/tcp_debug.h> |
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| 71 | |
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| 72 | #ifdef TCPDEBUG |
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| 73 | static int tcpconsdebug = 0; |
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| 74 | #endif |
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| 75 | |
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| 76 | static struct tcp_debug tcp_debug[TCP_NDEBUG]; |
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| 77 | static int tcp_debx; |
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| 78 | |
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| 79 | /* |
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| 80 | * Tcp debug routines |
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| 81 | */ |
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| 82 | void |
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| 83 | tcp_trace(act, ostate, tp, ti, req) |
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| 84 | short act, ostate; |
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| 85 | struct tcpcb *tp; |
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| 86 | struct tcpiphdr *ti; |
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| 87 | int req; |
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| 88 | { |
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[ff0f694d] | 89 | #ifdef TCPDEBUG |
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[39e6e65a] | 90 | tcp_seq seq, ack; |
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| 91 | int len, flags; |
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[ff0f694d] | 92 | #endif |
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[39e6e65a] | 93 | struct tcp_debug *td = &tcp_debug[tcp_debx++]; |
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| 94 | |
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| 95 | if (tcp_debx == TCP_NDEBUG) |
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| 96 | tcp_debx = 0; |
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| 97 | td->td_time = iptime(); |
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| 98 | td->td_act = act; |
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| 99 | td->td_ostate = ostate; |
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| 100 | td->td_tcb = (caddr_t)tp; |
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| 101 | if (tp) |
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| 102 | td->td_cb = *tp; |
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| 103 | else |
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| 104 | bzero((caddr_t)&td->td_cb, sizeof (*tp)); |
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| 105 | if (ti) |
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| 106 | td->td_ti = *ti; |
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| 107 | else |
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| 108 | bzero((caddr_t)&td->td_ti, sizeof (*ti)); |
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| 109 | td->td_req = req; |
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| 110 | #ifdef TCPDEBUG |
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| 111 | if (tcpconsdebug == 0) |
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| 112 | return; |
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| 113 | if (tp) |
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| 114 | printf("%p %s:", tp, tcpstates[ostate]); |
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| 115 | else |
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| 116 | printf("???????? "); |
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| 117 | printf("%s ", tanames[act]); |
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| 118 | switch (act) { |
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| 119 | |
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| 120 | case TA_INPUT: |
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| 121 | case TA_OUTPUT: |
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| 122 | case TA_DROP: |
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| 123 | if (ti == 0) |
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| 124 | break; |
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| 125 | seq = ti->ti_seq; |
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| 126 | ack = ti->ti_ack; |
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| 127 | len = ti->ti_len; |
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| 128 | if (act == TA_OUTPUT) { |
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| 129 | seq = ntohl(seq); |
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| 130 | ack = ntohl(ack); |
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| 131 | len = ntohs((u_short)len); |
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| 132 | } |
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| 133 | if (act == TA_OUTPUT) |
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| 134 | len -= sizeof (struct tcphdr); |
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| 135 | if (len) |
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| 136 | printf("[%x..%x)", seq, seq+len); |
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| 137 | else |
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| 138 | printf("%x", seq); |
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| 139 | printf("@%x, urp=%x", ack, ti->ti_urp); |
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| 140 | flags = ti->ti_flags; |
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| 141 | if (flags) { |
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| 142 | char *cp = "<"; |
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| 143 | #define pf(f) { \ |
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| 144 | if (ti->ti_flags & TH_##f) { \ |
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| 145 | printf("%s%s", cp, #f); \ |
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| 146 | cp = ","; \ |
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| 147 | } \ |
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| 148 | } |
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| 149 | pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); |
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| 150 | printf(">"); |
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| 151 | } |
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| 152 | break; |
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| 153 | |
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| 154 | case TA_USER: |
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| 155 | printf("%s", prurequests[req&0xff]); |
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| 156 | if ((req & 0xff) == PRU_SLOWTIMO) |
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| 157 | printf("<%s>", tcptimers[req>>8]); |
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| 158 | break; |
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| 159 | } |
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| 160 | if (tp) |
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| 161 | printf(" -> %s", tcpstates[tp->t_state]); |
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| 162 | /* print out internal state of tp !?! */ |
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| 163 | printf("\n"); |
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| 164 | if (tp == 0) |
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| 165 | return; |
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| 166 | printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", |
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| 167 | tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, |
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| 168 | tp->snd_max); |
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| 169 | printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", |
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| 170 | tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); |
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| 171 | #endif /* TCPDEBUG */ |
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| 172 | } |
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