1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* $OpenBSD: tcp_debug.c,v 1.31 2024/01/11 13:49:49 bluhm Exp $ */
/* $NetBSD: tcp_debug.c,v 1.10 1996/02/13 23:43:36 christos Exp $ */
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)COPYRIGHT 1.1 (NRL) 17 January 1995
*
* NRL grants permission for redistribution and use in source and binary
* forms, with or without modification, of the software and documentation
* created at NRL provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgements:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* This product includes software developed at the Information
* Technology Division, US Naval Research Laboratory.
* 4. Neither the name of the NRL nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THE SOFTWARE PROVIDED BY NRL IS PROVIDED BY NRL AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NRL OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the US Naval
* Research Laboratory (NRL).
*/
#ifdef TCPDEBUG
/* load symbolic names */
#define PRUREQUESTS
#define TCPSTATES
#define TCPTIMERS
#define TANAMES
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_debug.h>
#include <netinet/tcp_fsm.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif /* INET6 */
#ifdef TCPDEBUG
int tcpconsdebug = 0;
#endif
struct tcp_debug tcp_debug[TCP_NDEBUG];
int tcp_debx;
/*
* Tcp debug routines
*/
void
tcp_trace(short act, short ostate, struct tcpcb *tp, struct tcpcb *otp,
caddr_t headers, int req, int len)
{
#ifdef TCPDEBUG
tcp_seq seq, ack;
int flags;
#endif
int pf = PF_UNSPEC;
struct tcp_debug *td = &tcp_debug[tcp_debx++];
struct tcpiphdr *ti = (struct tcpiphdr *)headers;
struct tcpipv6hdr *ti6 = (struct tcpipv6hdr *)headers;
struct tcphdr *th;
if (tcp_debx == TCP_NDEBUG)
tcp_debx = 0;
td->td_time = iptime();
td->td_act = act;
td->td_ostate = ostate;
td->td_tcb = (caddr_t)otp;
if (tp) {
pf = tp->pf;
td->td_cb = *tp;
} else
bzero((caddr_t)&td->td_cb, sizeof (*tp));
bzero(&td->td_ti6, sizeof(struct tcpipv6hdr));
bzero(&td->td_ti, sizeof(struct tcpiphdr));
if (headers) {
/* The address family may be in tcpcb or ip header. */
if (pf == PF_UNSPEC) {
switch (ti6->ti6_i.ip6_vfc & IPV6_VERSION_MASK) {
#ifdef INET6
case IPV6_VERSION:
pf = PF_INET6;
break;
#endif /* INET6 */
case IPVERSION:
pf = PF_INET;
break;
}
}
switch (pf) {
#ifdef INET6
case PF_INET6:
th = &ti6->ti6_t;
td->td_ti6 = *ti6;
td->td_ti6.ti6_plen = len;
break;
#endif /* INET6 */
case PF_INET:
th = &ti->ti_t;
td->td_ti = *ti;
td->td_ti.ti_len = len;
break;
default:
headers = NULL;
break;
}
}
td->td_req = req;
#ifdef TCPDEBUG
if (tcpconsdebug == 0)
return;
if (otp)
printf("%p %s:", otp, tcpstates[ostate]);
else
printf("???????? ");
printf("%s ", tanames[act]);
switch (act) {
case TA_INPUT:
case TA_OUTPUT:
case TA_DROP:
if (headers == NULL)
break;
seq = th->th_seq;
ack = th->th_ack;
if (act == TA_OUTPUT) {
seq = ntohl(seq);
ack = ntohl(ack);
}
if (len)
printf("[%x..%x)", seq, seq+len);
else
printf("%x", seq);
printf("@%x, urp=%x", ack, th->th_urp);
flags = th->th_flags;
if (flags) {
char *cp = "<";
#define pf(f) { if (th->th_flags&TH_##f) { printf("%s%s", cp, #f); cp = ","; } }
pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
printf(">");
}
break;
case TA_USER:
printf("%s", prurequests[req]);
break;
case TA_TIMER:
printf("%s", tcptimers[req]);
break;
}
if (tp)
printf(" -> %s", tcpstates[tp->t_state]);
/* print out internal state of tp !?! */
printf("\n");
if (tp == NULL)
return;
printf("\trcv_(nxt,wnd,up) (%x,%lx,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
tp->snd_max);
printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%lx)\n",
tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
#endif /* TCPDEBUG */
}
|
