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