FreeBSD/Linux Kernel Cross Reference
sys/kern/uipc_debug.c
1 /*-
2 * Copyright (c) 2007 Robert N. M. Watson
3 * 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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /*
28 * Debugger routines relating to sockets, protocols, etc, for use in DDB.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD: releng/11.0/sys/kern/uipc_debug.c 296277 2016-03-01 18:12:14Z jhb $");
33
34 #include "opt_ddb.h"
35
36 #include <sys/param.h>
37 #include <sys/domain.h>
38 #include <sys/kernel.h>
39 #include <sys/protosw.h>
40 #include <sys/socket.h>
41 #include <sys/socketvar.h>
42
43 #ifdef DDB
44 #include <ddb/ddb.h>
45
46 static void
47 db_print_sotype(short so_type)
48 {
49
50 switch (so_type) {
51 case SOCK_STREAM:
52 db_printf("SOCK_STREAM");
53 break;
54
55 case SOCK_DGRAM:
56 db_printf("SOCK_DGRAM");
57 break;
58
59 case SOCK_RAW:
60 db_printf("SOCK_RAW");
61 break;
62
63 case SOCK_RDM:
64 db_printf("SOCK_RDM");
65 break;
66
67 case SOCK_SEQPACKET:
68 db_printf("SOCK_SEQPACKET");
69 break;
70
71 default:
72 db_printf("unknown");
73 break;
74 }
75 }
76
77 static void
78 db_print_sooptions(short so_options)
79 {
80 int comma;
81
82 comma = 0;
83 if (so_options & SO_DEBUG) {
84 db_printf("%sSO_DEBUG", comma ? ", " : "");
85 comma = 1;
86 }
87 if (so_options & SO_ACCEPTCONN) {
88 db_printf("%sSO_ACCEPTCONN", comma ? ", " : "");
89 comma = 1;
90 }
91 if (so_options & SO_REUSEADDR) {
92 db_printf("%sSO_REUSEADDR", comma ? ", " : "");
93 comma = 1;
94 }
95 if (so_options & SO_KEEPALIVE) {
96 db_printf("%sSO_KEEPALIVE", comma ? ", " : "");
97 comma = 1;
98 }
99 if (so_options & SO_DONTROUTE) {
100 db_printf("%sSO_DONTROUTE", comma ? ", " : "");
101 comma = 1;
102 }
103 if (so_options & SO_BROADCAST) {
104 db_printf("%sSO_BROADCAST", comma ? ", " : "");
105 comma = 1;
106 }
107 if (so_options & SO_USELOOPBACK) {
108 db_printf("%sSO_USELOOPBACK", comma ? ", " : "");
109 comma = 1;
110 }
111 if (so_options & SO_LINGER) {
112 db_printf("%sSO_LINGER", comma ? ", " : "");
113 comma = 1;
114 }
115 if (so_options & SO_OOBINLINE) {
116 db_printf("%sSO_OOBINLINE", comma ? ", " : "");
117 comma = 1;
118 }
119 if (so_options & SO_REUSEPORT) {
120 db_printf("%sSO_REUSEPORT", comma ? ", " : "");
121 comma = 1;
122 }
123 if (so_options & SO_TIMESTAMP) {
124 db_printf("%sSO_TIMESTAMP", comma ? ", " : "");
125 comma = 1;
126 }
127 if (so_options & SO_NOSIGPIPE) {
128 db_printf("%sSO_NOSIGPIPE", comma ? ", " : "");
129 comma = 1;
130 }
131 if (so_options & SO_ACCEPTFILTER) {
132 db_printf("%sSO_ACCEPTFILTER", comma ? ", " : "");
133 comma = 1;
134 }
135 if (so_options & SO_BINTIME) {
136 db_printf("%sSO_BINTIME", comma ? ", " : "");
137 comma = 1;
138 }
139 if (so_options & SO_NO_OFFLOAD) {
140 db_printf("%sSO_NO_OFFLOAD", comma ? ", " : "");
141 comma = 1;
142 }
143 if (so_options & SO_NO_DDP) {
144 db_printf("%sSO_NO_DDP", comma ? ", " : "");
145 comma = 1;
146 }
147 }
148
149 static void
150 db_print_sostate(short so_state)
151 {
152 int comma;
153
154 comma = 0;
155 if (so_state & SS_NOFDREF) {
156 db_printf("%sSS_NOFDREF", comma ? ", " : "");
157 comma = 1;
158 }
159 if (so_state & SS_ISCONNECTED) {
160 db_printf("%sSS_ISCONNECTED", comma ? ", " : "");
161 comma = 1;
162 }
163 if (so_state & SS_ISCONNECTING) {
164 db_printf("%sSS_ISCONNECTING", comma ? ", " : "");
165 comma = 1;
166 }
167 if (so_state & SS_ISDISCONNECTING) {
168 db_printf("%sSS_ISDISCONNECTING", comma ? ", " : "");
169 comma = 1;
170 }
171 if (so_state & SS_NBIO) {
172 db_printf("%sSS_NBIO", comma ? ", " : "");
173 comma = 1;
174 }
175 if (so_state & SS_ASYNC) {
176 db_printf("%sSS_ASYNC", comma ? ", " : "");
177 comma = 1;
178 }
179 if (so_state & SS_ISCONFIRMING) {
180 db_printf("%sSS_ISCONFIRMING", comma ? ", " : "");
181 comma = 1;
182 }
183 if (so_state & SS_PROTOREF) {
184 db_printf("%sSS_PROTOREF", comma ? ", " : "");
185 comma = 1;
186 }
187 }
188
189 static void
190 db_print_soqstate(int so_qstate)
191 {
192 int comma;
193
194 comma = 0;
195 if (so_qstate & SQ_INCOMP) {
196 db_printf("%sSQ_INCOMP", comma ? ", " : "");
197 comma = 1;
198 }
199 if (so_qstate & SQ_COMP) {
200 db_printf("%sSQ_COMP", comma ? ", " : "");
201 comma = 1;
202 }
203 }
204
205 static void
206 db_print_sbstate(short sb_state)
207 {
208 int comma;
209
210 comma = 0;
211 if (sb_state & SBS_CANTSENDMORE) {
212 db_printf("%sSBS_CANTSENDMORE", comma ? ", " : "");
213 comma = 1;
214 }
215 if (sb_state & SBS_CANTRCVMORE) {
216 db_printf("%sSBS_CANTRCVMORE", comma ? ", " : "");
217 comma = 1;
218 }
219 if (sb_state & SBS_RCVATMARK) {
220 db_printf("%sSBS_RCVATMARK", comma ? ", " : "");
221 comma = 1;
222 }
223 }
224
225 static void
226 db_print_indent(int indent)
227 {
228 int i;
229
230 for (i = 0; i < indent; i++)
231 db_printf(" ");
232 }
233
234 static void
235 db_print_domain(struct domain *d, const char *domain_name, int indent)
236 {
237
238 db_print_indent(indent);
239 db_printf("%s at %p\n", domain_name, d);
240
241 indent += 2;
242
243 db_print_indent(indent);
244 db_printf("dom_family: %d ", d->dom_family);
245 db_printf("dom_name: %s\n", d->dom_name);
246
247 db_print_indent(indent);
248 db_printf("dom_init: %p ", d->dom_init);
249 db_printf("dom_externalize: %p ", d->dom_externalize);
250 db_printf("dom_dispose: %p\n", d->dom_dispose);
251
252 db_print_indent(indent);
253 db_printf("dom_protosw: %p ", d->dom_protosw);
254 db_printf("dom_next: %p\n", d->dom_next);
255
256 db_print_indent(indent);
257 db_printf("dom_rtattach: %p ", d->dom_rtattach);
258
259 db_print_indent(indent);
260 db_printf("dom_ifattach: %p ", d->dom_ifattach);
261 db_printf("dom_ifdetach: %p\n", d->dom_ifdetach);
262 }
263
264 static void
265 db_print_prflags(short pr_flags)
266 {
267 int comma;
268
269 comma = 0;
270 if (pr_flags & PR_ATOMIC) {
271 db_printf("%sPR_ATOMIC", comma ? ", " : "");
272 comma = 1;
273 }
274 if (pr_flags & PR_ADDR) {
275 db_printf("%sPR_ADDR", comma ? ", " : "");
276 comma = 1;
277 }
278 if (pr_flags & PR_CONNREQUIRED) {
279 db_printf("%sPR_CONNREQUIRED", comma ? ", " : "");
280 comma = 1;
281 }
282 if (pr_flags & PR_WANTRCVD) {
283 db_printf("%sPR_WANTRCVD", comma ? ", " : "");
284 comma = 1;
285 }
286 if (pr_flags & PR_RIGHTS) {
287 db_printf("%sPR_RIGHTS", comma ? ", " : "");
288 comma = 1;
289 }
290 if (pr_flags & PR_IMPLOPCL) {
291 db_printf("%sPR_IMPLOPCL", comma ? ", " : "");
292 comma = 1;
293 }
294 if (pr_flags & PR_LASTHDR) {
295 db_printf("%sPR_LASTHDR", comma ? ", " : "");
296 comma = 1;
297 }
298 }
299
300 static void
301 db_print_protosw(struct protosw *pr, const char *prname, int indent)
302 {
303
304 db_print_indent(indent);
305 db_printf("%s at %p\n", prname, pr);
306
307 indent += 2;
308
309 db_print_indent(indent);
310 db_printf("pr_type: %d ", pr->pr_type);
311 db_printf("pr_domain: %p\n", pr->pr_domain);
312 if (pr->pr_domain != NULL)
313 db_print_domain(pr->pr_domain, "pr_domain", indent);
314
315 db_print_indent(indent);
316 db_printf("pr_protocol: %d\n", pr->pr_protocol);
317
318 db_print_indent(indent);
319 db_printf("pr_flags: %d (", pr->pr_flags);
320 db_print_prflags(pr->pr_flags);
321 db_printf(")\n");
322
323 db_print_indent(indent);
324 db_printf("pr_input: %p ", pr->pr_input);
325 db_printf("pr_output: %p ", pr->pr_output);
326 db_printf("pr_ctlinput: %p\n", pr->pr_ctlinput);
327
328 db_print_indent(indent);
329 db_printf("pr_ctloutput: %p ", pr->pr_ctloutput);
330 db_printf("pr_init: %p\n", pr->pr_init);
331
332 db_print_indent(indent);
333 db_printf("pr_fasttimo: %p ", pr->pr_fasttimo);
334 db_printf("pr_slowtimo: %p ", pr->pr_slowtimo);
335 db_printf("pr_drain: %p\n", pr->pr_drain);
336
337 db_print_indent(indent);
338 }
339
340 static void
341 db_print_sbflags(short sb_flags)
342 {
343 int comma;
344
345 comma = 0;
346 if (sb_flags & SB_WAIT) {
347 db_printf("%sSB_WAIT", comma ? ", " : "");
348 comma = 1;
349 }
350 if (sb_flags & SB_SEL) {
351 db_printf("%sSB_SEL", comma ? ", " : "");
352 comma = 1;
353 }
354 if (sb_flags & SB_ASYNC) {
355 db_printf("%sSB_ASYNC", comma ? ", " : "");
356 comma = 1;
357 }
358 if (sb_flags & SB_UPCALL) {
359 db_printf("%sSB_UPCALL", comma ? ", " : "");
360 comma = 1;
361 }
362 if (sb_flags & SB_NOINTR) {
363 db_printf("%sSB_NOINTR", comma ? ", " : "");
364 comma = 1;
365 }
366 if (sb_flags & SB_AIO) {
367 db_printf("%sSB_AIO", comma ? ", " : "");
368 comma = 1;
369 }
370 if (sb_flags & SB_KNOTE) {
371 db_printf("%sSB_KNOTE", comma ? ", " : "");
372 comma = 1;
373 }
374 if (sb_flags & SB_AUTOSIZE) {
375 db_printf("%sSB_AUTOSIZE", comma ? ", " : "");
376 comma = 1;
377 }
378 }
379
380 static void
381 db_print_sockbuf(struct sockbuf *sb, const char *sockbufname, int indent)
382 {
383
384 db_print_indent(indent);
385 db_printf("%s at %p\n", sockbufname, sb);
386
387 indent += 2;
388
389 db_print_indent(indent);
390 db_printf("sb_state: 0x%x (", sb->sb_state);
391 db_print_sbstate(sb->sb_state);
392 db_printf(")\n");
393
394 db_print_indent(indent);
395 db_printf("sb_mb: %p ", sb->sb_mb);
396 db_printf("sb_mbtail: %p ", sb->sb_mbtail);
397 db_printf("sb_lastrecord: %p\n", sb->sb_lastrecord);
398
399 db_print_indent(indent);
400 db_printf("sb_sndptr: %p ", sb->sb_sndptr);
401 db_printf("sb_sndptroff: %u\n", sb->sb_sndptroff);
402
403 db_print_indent(indent);
404 db_printf("sb_acc: %u ", sb->sb_acc);
405 db_printf("sb_ccc: %u ", sb->sb_ccc);
406 db_printf("sb_hiwat: %u ", sb->sb_hiwat);
407 db_printf("sb_mbcnt: %u ", sb->sb_mbcnt);
408 db_printf("sb_mbmax: %u\n", sb->sb_mbmax);
409
410 db_print_indent(indent);
411 db_printf("sb_ctl: %u ", sb->sb_ctl);
412 db_printf("sb_lowat: %d ", sb->sb_lowat);
413 db_printf("sb_timeo: %jd\n", sb->sb_timeo);
414
415 db_print_indent(indent);
416 db_printf("sb_flags: 0x%x (", sb->sb_flags);
417 db_print_sbflags(sb->sb_flags);
418 db_printf(")\n");
419
420 db_print_indent(indent);
421 db_printf("sb_aiojobq first: %p\n", TAILQ_FIRST(&sb->sb_aiojobq));
422 }
423
424 static void
425 db_print_socket(struct socket *so, const char *socketname, int indent)
426 {
427
428 db_print_indent(indent);
429 db_printf("%s at %p\n", socketname, so);
430
431 indent += 2;
432
433 db_print_indent(indent);
434 db_printf("so_count: %d ", so->so_count);
435 db_printf("so_type: %d (", so->so_type);
436 db_print_sotype(so->so_type);
437 db_printf(")\n");
438
439 db_print_indent(indent);
440 db_printf("so_options: 0x%x (", so->so_options);
441 db_print_sooptions(so->so_options);
442 db_printf(")\n");
443
444 db_print_indent(indent);
445 db_printf("so_linger: %d ", so->so_linger);
446 db_printf("so_state: 0x%x (", so->so_state);
447 db_print_sostate(so->so_state);
448 db_printf(")\n");
449
450 db_print_indent(indent);
451 db_printf("so_qstate: 0x%x (", so->so_qstate);
452 db_print_soqstate(so->so_qstate);
453 db_printf(") ");
454 db_printf("so_pcb: %p ", so->so_pcb);
455 db_printf("so_proto: %p\n", so->so_proto);
456
457 if (so->so_proto != NULL)
458 db_print_protosw(so->so_proto, "so_proto", indent);
459
460 db_print_indent(indent);
461 db_printf("so_head: %p ", so->so_head);
462 db_printf("so_incomp first: %p ", TAILQ_FIRST(&so->so_incomp));
463 db_printf("so_comp first: %p\n", TAILQ_FIRST(&so->so_comp));
464
465 db_print_indent(indent);
466 /* so_list skipped */
467 db_printf("so_qlen: %u ", so->so_qlen);
468 db_printf("so_incqlen: %u ", so->so_incqlen);
469 db_printf("so_qlimit: %u ", so->so_qlimit);
470 db_printf("so_timeo: %d ", so->so_timeo);
471 db_printf("so_error: %d\n", so->so_error);
472
473 db_print_indent(indent);
474 db_printf("so_sigio: %p ", so->so_sigio);
475 db_printf("so_oobmark: %lu ", so->so_oobmark);
476
477 db_print_sockbuf(&so->so_rcv, "so_rcv", indent);
478 db_print_sockbuf(&so->so_snd, "so_snd", indent);
479 }
480
481 DB_SHOW_COMMAND(socket, db_show_socket)
482 {
483 struct socket *so;
484
485 if (!have_addr) {
486 db_printf("usage: show socket <addr>\n");
487 return;
488 }
489 so = (struct socket *)addr;
490
491 db_print_socket(so, "socket", 0);
492 }
493
494 DB_SHOW_COMMAND(sockbuf, db_show_sockbuf)
495 {
496 struct sockbuf *sb;
497
498 if (!have_addr) {
499 db_printf("usage: show sockbuf <addr>\n");
500 return;
501 }
502 sb = (struct sockbuf *)addr;
503
504 db_print_sockbuf(sb, "sockbuf", 0);
505 }
506
507 DB_SHOW_COMMAND(protosw, db_show_protosw)
508 {
509 struct protosw *pr;
510
511 if (!have_addr) {
512 db_printf("usage: show protosw <addr>\n");
513 return;
514 }
515 pr = (struct protosw *)addr;
516
517 db_print_protosw(pr, "protosw", 0);
518 }
519
520 DB_SHOW_COMMAND(domain, db_show_domain)
521 {
522 struct domain *d;
523
524 if (!have_addr) {
525 db_printf("usage: show protosw <addr>\n");
526 return;
527 }
528 d = (struct domain *)addr;
529
530 db_print_domain(d, "domain", 0);
531 }
532 #endif
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