source: rtems/cpukit/libnetworking/netinet/tcp_debug.c @ 7c7fd4d

4.104.114.84.95
Last change on this file since 7c7fd4d was 7c7fd4d, checked in by Joel Sherrill <joel.sherrill@…>, on Feb 4, 1999 at 2:53:06 PM

Modified to include comments on how to get TCPDEBUG turned on and
printing messages.

  • Property mode set to 100644
File size: 4.6 KB
Line 
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 * $Id$
35 */
36
37#include "opt_tcpdebug.h"
38
39#ifdef TCPDEBUG
40/* load symbolic names */
41#define PRUREQUESTS
42#define TCPSTATES
43#define TCPTIMERS
44#define TANAMES
45#endif
46
47#include <sys/param.h>
48#include <sys/queue.h>
49#include <sys/systm.h>
50#include <sys/mbuf.h>
51#include <sys/socket.h>
52#include <sys/socketvar.h>
53#include <sys/protosw.h>
54#include <sys/errno.h>
55
56#include <net/route.h>
57#include <net/if.h>
58
59#include <netinet/in.h>
60#include <netinet/in_systm.h>
61#include <netinet/ip.h>
62#include <netinet/in_pcb.h>
63#include <netinet/ip_var.h>
64#include <netinet/tcp.h>
65#include <netinet/tcp_fsm.h>
66#include <netinet/tcp_seq.h>
67#include <netinet/tcp_timer.h>
68#include <netinet/tcp_var.h>
69#include <netinet/tcpip.h>
70#include <netinet/tcp_debug.h>
71
72#ifdef TCPDEBUG
73static int      tcpconsdebug = 0; /* set to 1 to enable prints */
74#endif
75
76static struct tcp_debug tcp_debug[TCP_NDEBUG];
77static int      tcp_debx;
78
79/*
80 * Tcp debug routines
81 */
82void
83tcp_trace(act, ostate, tp, ti, req)
84        short act, ostate;
85        struct tcpcb *tp;
86        struct tcpiphdr *ti;
87        int req;
88{
89#ifdef TCPDEBUG
90        tcp_seq seq, ack;
91        int len, flags;
92#endif
93        struct tcp_debug *td = &tcp_debug[tcp_debx++];
94
95        if (tcp_debx == TCP_NDEBUG)
96                tcp_debx = 0;
97        td->td_time = iptime();
98        td->td_act = act;
99        td->td_ostate = ostate;
100        td->td_tcb = (caddr_t)tp;
101        if (tp)
102                td->td_cb = *tp;
103        else
104                bzero((caddr_t)&td->td_cb, sizeof (*tp));
105        if (ti)
106                td->td_ti = *ti;
107        else
108                bzero((caddr_t)&td->td_ti, sizeof (*ti));
109        td->td_req = req;
110#ifdef TCPDEBUG
111        if (tcpconsdebug == 0)
112                return;
113        if (tp)
114                printf("%p %s:", tp, tcpstates[ostate]);
115        else
116                printf("???????? ");
117        printf("%s ", tanames[act]);
118        switch (act) {
119
120        case TA_INPUT:
121        case TA_OUTPUT:
122        case TA_DROP:
123                if (ti == 0)
124                        break;
125                seq = ti->ti_seq;
126                ack = ti->ti_ack;
127                len = ti->ti_len;
128                if (act == TA_OUTPUT) {
129                        seq = ntohl(seq);
130                        ack = ntohl(ack);
131                        len = ntohs((u_short)len);
132                }
133                if (act == TA_OUTPUT)
134                        len -= sizeof (struct tcphdr);
135                if (len)
136                        printf("[%x..%x)", seq, seq+len);
137                else
138                        printf("%x", seq);
139                printf("@%x, urp=%x", ack, ti->ti_urp);
140                flags = ti->ti_flags;
141                if (flags) {
142                        char *cp = "<";
143#define pf(f) {                                 \
144        if (ti->ti_flags & TH_##f) {            \
145                printf("%s%s", cp, #f);         \
146                cp = ",";                       \
147        }                                       \
148}
149                        pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
150                        printf(">");
151                }
152                break;
153
154        case TA_USER:
155                printf("%s", prurequests[req&0xff]);
156                if ((req & 0xff) == PRU_SLOWTIMO)
157                        printf("<%s>", tcptimers[req>>8]);
158                break;
159        }
160        if (tp)
161                printf(" -> %s", tcpstates[tp->t_state]);
162        /* print out internal state of tp !?! */
163        printf("\n");
164        if (tp == 0)
165                return;
166        printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
167            tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
168            tp->snd_max);
169        printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
170            tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
171#endif /* TCPDEBUG */
172}
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