FreeBSD/Linux Kernel Cross Reference
sys/kern/uipc_debug.c
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007 Robert N. M. Watson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 /*
30 * Debugger routines relating to sockets, protocols, etc, for use in DDB.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #include "opt_ddb.h"
37
38 #include <sys/param.h>
39 #include <sys/domain.h>
40 #include <sys/kernel.h>
41 #include <sys/protosw.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44
45 #ifdef DDB
46 #include <ddb/ddb.h>
47
48 static void
49 db_print_sotype(short so_type)
50 {
51
52 switch (so_type) {
53 case SOCK_STREAM:
54 db_printf("SOCK_STREAM");
55 break;
56
57 case SOCK_DGRAM:
58 db_printf("SOCK_DGRAM");
59 break;
60
61 case SOCK_RAW:
62 db_printf("SOCK_RAW");
63 break;
64
65 case SOCK_RDM:
66 db_printf("SOCK_RDM");
67 break;
68
69 case SOCK_SEQPACKET:
70 db_printf("SOCK_SEQPACKET");
71 break;
72
73 default:
74 db_printf("unknown");
75 break;
76 }
77 }
78
79 static void
80 db_print_sooptions(int so_options)
81 {
82 int comma;
83
84 comma = 0;
85 if (so_options & SO_DEBUG) {
86 db_printf("%sSO_DEBUG", comma ? ", " : "");
87 comma = 1;
88 }
89 if (so_options & SO_ACCEPTCONN) {
90 db_printf("%sSO_ACCEPTCONN", comma ? ", " : "");
91 comma = 1;
92 }
93 if (so_options & SO_REUSEADDR) {
94 db_printf("%sSO_REUSEADDR", comma ? ", " : "");
95 comma = 1;
96 }
97 if (so_options & SO_KEEPALIVE) {
98 db_printf("%sSO_KEEPALIVE", comma ? ", " : "");
99 comma = 1;
100 }
101 if (so_options & SO_DONTROUTE) {
102 db_printf("%sSO_DONTROUTE", comma ? ", " : "");
103 comma = 1;
104 }
105 if (so_options & SO_BROADCAST) {
106 db_printf("%sSO_BROADCAST", comma ? ", " : "");
107 comma = 1;
108 }
109 if (so_options & SO_USELOOPBACK) {
110 db_printf("%sSO_USELOOPBACK", comma ? ", " : "");
111 comma = 1;
112 }
113 if (so_options & SO_LINGER) {
114 db_printf("%sSO_LINGER", comma ? ", " : "");
115 comma = 1;
116 }
117 if (so_options & SO_OOBINLINE) {
118 db_printf("%sSO_OOBINLINE", comma ? ", " : "");
119 comma = 1;
120 }
121 if (so_options & SO_REUSEPORT) {
122 db_printf("%sSO_REUSEPORT", comma ? ", " : "");
123 comma = 1;
124 }
125 if (so_options & SO_REUSEPORT_LB) {
126 db_printf("%sSO_REUSEPORT_LB", comma ? ", " : "");
127 comma = 1;
128 }
129 if (so_options & SO_TIMESTAMP) {
130 db_printf("%sSO_TIMESTAMP", comma ? ", " : "");
131 comma = 1;
132 }
133 if (so_options & SO_NOSIGPIPE) {
134 db_printf("%sSO_NOSIGPIPE", comma ? ", " : "");
135 comma = 1;
136 }
137 if (so_options & SO_ACCEPTFILTER) {
138 db_printf("%sSO_ACCEPTFILTER", comma ? ", " : "");
139 comma = 1;
140 }
141 if (so_options & SO_BINTIME) {
142 db_printf("%sSO_BINTIME", comma ? ", " : "");
143 comma = 1;
144 }
145 if (so_options & SO_NO_OFFLOAD) {
146 db_printf("%sSO_NO_OFFLOAD", comma ? ", " : "");
147 comma = 1;
148 }
149 if (so_options & SO_NO_DDP) {
150 db_printf("%sSO_NO_DDP", comma ? ", " : "");
151 comma = 1;
152 }
153 }
154
155 static void
156 db_print_sostate(short so_state)
157 {
158 int comma;
159
160 comma = 0;
161 if (so_state & SS_ISCONNECTED) {
162 db_printf("%sSS_ISCONNECTED", comma ? ", " : "");
163 comma = 1;
164 }
165 if (so_state & SS_ISCONNECTING) {
166 db_printf("%sSS_ISCONNECTING", comma ? ", " : "");
167 comma = 1;
168 }
169 if (so_state & SS_ISDISCONNECTING) {
170 db_printf("%sSS_ISDISCONNECTING", comma ? ", " : "");
171 comma = 1;
172 }
173 if (so_state & SS_NBIO) {
174 db_printf("%sSS_NBIO", comma ? ", " : "");
175 comma = 1;
176 }
177 if (so_state & SS_ASYNC) {
178 db_printf("%sSS_ASYNC", comma ? ", " : "");
179 comma = 1;
180 }
181 if (so_state & SS_ISCONFIRMING) {
182 db_printf("%sSS_ISCONFIRMING", comma ? ", " : "");
183 comma = 1;
184 }
185 }
186
187 static void
188 db_print_soqstate(int so_qstate)
189 {
190 int comma;
191
192 comma = 0;
193 if (so_qstate & SQ_INCOMP) {
194 db_printf("%sSQ_INCOMP", comma ? ", " : "");
195 comma = 1;
196 }
197 if (so_qstate & SQ_COMP) {
198 db_printf("%sSQ_COMP", comma ? ", " : "");
199 comma = 1;
200 }
201 }
202
203 static void
204 db_print_sbstate(short sb_state)
205 {
206 int comma;
207
208 comma = 0;
209 if (sb_state & SBS_CANTSENDMORE) {
210 db_printf("%sSBS_CANTSENDMORE", comma ? ", " : "");
211 comma = 1;
212 }
213 if (sb_state & SBS_CANTRCVMORE) {
214 db_printf("%sSBS_CANTRCVMORE", comma ? ", " : "");
215 comma = 1;
216 }
217 if (sb_state & SBS_RCVATMARK) {
218 db_printf("%sSBS_RCVATMARK", comma ? ", " : "");
219 comma = 1;
220 }
221 }
222
223 static void
224 db_print_indent(int indent)
225 {
226 int i;
227
228 for (i = 0; i < indent; i++)
229 db_printf(" ");
230 }
231
232 static void
233 db_print_domain(struct domain *d, const char *domain_name, int indent)
234 {
235
236 db_print_indent(indent);
237 db_printf("%s at %p\n", domain_name, d);
238
239 indent += 2;
240
241 db_print_indent(indent);
242 db_printf("dom_family: %d ", d->dom_family);
243 db_printf("dom_name: %s\n", d->dom_name);
244
245 db_print_indent(indent);
246 db_printf("dom_externalize: %p ", d->dom_externalize);
247 db_printf("dom_dispose: %p\n", d->dom_dispose);
248
249 db_print_indent(indent);
250 db_printf("dom_protosw: %p ", d->dom_protosw);
251 db_printf("dom_next: %p\n", d->dom_next.sle_next);
252
253 db_print_indent(indent);
254 db_printf("dom_rtattach: %p ", d->dom_rtattach);
255
256 db_print_indent(indent);
257 db_printf("dom_ifattach: %p ", d->dom_ifattach);
258 db_printf("dom_ifdetach: %p\n", d->dom_ifdetach);
259 }
260
261 static void
262 db_print_prflags(short pr_flags)
263 {
264 int comma;
265
266 comma = 0;
267 if (pr_flags & PR_ATOMIC) {
268 db_printf("%sPR_ATOMIC", comma ? ", " : "");
269 comma = 1;
270 }
271 if (pr_flags & PR_ADDR) {
272 db_printf("%sPR_ADDR", comma ? ", " : "");
273 comma = 1;
274 }
275 if (pr_flags & PR_CONNREQUIRED) {
276 db_printf("%sPR_CONNREQUIRED", comma ? ", " : "");
277 comma = 1;
278 }
279 if (pr_flags & PR_WANTRCVD) {
280 db_printf("%sPR_WANTRCVD", comma ? ", " : "");
281 comma = 1;
282 }
283 if (pr_flags & PR_RIGHTS) {
284 db_printf("%sPR_RIGHTS", comma ? ", " : "");
285 comma = 1;
286 }
287 if (pr_flags & PR_IMPLOPCL) {
288 db_printf("%sPR_IMPLOPCL", comma ? ", " : "");
289 comma = 1;
290 }
291 }
292
293 static void
294 db_print_protosw(struct protosw *pr, const char *prname, int indent)
295 {
296
297 db_print_indent(indent);
298 db_printf("%s at %p\n", prname, pr);
299
300 indent += 2;
301
302 db_print_indent(indent);
303 db_printf("pr_type: %d ", pr->pr_type);
304 db_printf("pr_domain: %p\n", pr->pr_domain);
305 if (pr->pr_domain != NULL)
306 db_print_domain(pr->pr_domain, "pr_domain", indent);
307
308 db_print_indent(indent);
309 db_printf("pr_protocol: %d\n", pr->pr_protocol);
310
311 db_print_indent(indent);
312 db_printf("pr_flags: %d (", pr->pr_flags);
313 db_print_prflags(pr->pr_flags);
314 db_printf(")\n");
315
316 db_print_indent(indent);
317 db_printf("pr_ctloutput: %p ", pr->pr_ctloutput);
318 }
319
320 static void
321 db_print_sbflags(short sb_flags)
322 {
323 int comma;
324
325 comma = 0;
326 if (sb_flags & SB_WAIT) {
327 db_printf("%sSB_WAIT", comma ? ", " : "");
328 comma = 1;
329 }
330 if (sb_flags & SB_SEL) {
331 db_printf("%sSB_SEL", comma ? ", " : "");
332 comma = 1;
333 }
334 if (sb_flags & SB_ASYNC) {
335 db_printf("%sSB_ASYNC", comma ? ", " : "");
336 comma = 1;
337 }
338 if (sb_flags & SB_UPCALL) {
339 db_printf("%sSB_UPCALL", comma ? ", " : "");
340 comma = 1;
341 }
342 if (sb_flags & SB_NOINTR) {
343 db_printf("%sSB_NOINTR", comma ? ", " : "");
344 comma = 1;
345 }
346 if (sb_flags & SB_AIO) {
347 db_printf("%sSB_AIO", comma ? ", " : "");
348 comma = 1;
349 }
350 if (sb_flags & SB_KNOTE) {
351 db_printf("%sSB_KNOTE", comma ? ", " : "");
352 comma = 1;
353 }
354 if (sb_flags & SB_AUTOSIZE) {
355 db_printf("%sSB_AUTOSIZE", comma ? ", " : "");
356 comma = 1;
357 }
358 }
359
360 static void
361 db_print_sockbuf(struct sockbuf *sb, const char *sockbufname, int indent)
362 {
363
364 db_print_indent(indent);
365 db_printf("%s at %p\n", sockbufname, sb);
366
367 indent += 2;
368
369 db_print_indent(indent);
370 db_printf("sb_state: 0x%x (", sb->sb_state);
371 db_print_sbstate(sb->sb_state);
372 db_printf(")\n");
373
374 db_print_indent(indent);
375 db_printf("sb_mb: %p ", sb->sb_mb);
376 db_printf("sb_mbtail: %p ", sb->sb_mbtail);
377 db_printf("sb_lastrecord: %p\n", sb->sb_lastrecord);
378
379 db_print_indent(indent);
380 db_printf("sb_sndptr: %p ", sb->sb_sndptr);
381 db_printf("sb_sndptroff: %u\n", sb->sb_sndptroff);
382
383 db_print_indent(indent);
384 db_printf("sb_acc: %u ", sb->sb_acc);
385 db_printf("sb_ccc: %u ", sb->sb_ccc);
386 db_printf("sb_hiwat: %u ", sb->sb_hiwat);
387 db_printf("sb_mbcnt: %u ", sb->sb_mbcnt);
388 db_printf("sb_mbmax: %u\n", sb->sb_mbmax);
389
390 db_print_indent(indent);
391 db_printf("sb_ctl: %u ", sb->sb_ctl);
392 db_printf("sb_lowat: %d ", sb->sb_lowat);
393 db_printf("sb_timeo: %jd\n", sb->sb_timeo);
394
395 db_print_indent(indent);
396 db_printf("sb_flags: 0x%x (", sb->sb_flags);
397 db_print_sbflags(sb->sb_flags);
398 db_printf(")\n");
399
400 db_print_indent(indent);
401 db_printf("sb_aiojobq first: %p\n", TAILQ_FIRST(&sb->sb_aiojobq));
402 }
403
404 static void
405 db_print_socket(struct socket *so, const char *socketname, int indent)
406 {
407
408 db_print_indent(indent);
409 db_printf("%s at %p\n", socketname, so);
410
411 indent += 2;
412
413 db_print_indent(indent);
414 db_printf("so_count: %d ", so->so_count);
415 db_printf("so_type: %d (", so->so_type);
416 db_print_sotype(so->so_type);
417 db_printf(")\n");
418
419 db_print_indent(indent);
420 db_printf("so_options: 0x%x (", so->so_options);
421 db_print_sooptions(so->so_options);
422 db_printf(")\n");
423
424 db_print_indent(indent);
425 db_printf("so_linger: %d ", so->so_linger);
426 db_printf("so_state: 0x%x (", so->so_state);
427 db_print_sostate(so->so_state);
428 db_printf(")\n");
429
430 db_print_indent(indent);
431 db_printf("so_pcb: %p ", so->so_pcb);
432 db_printf("so_proto: %p\n", so->so_proto);
433
434 if (so->so_proto != NULL)
435 db_print_protosw(so->so_proto, "so_proto", indent);
436
437 db_print_indent(indent);
438 if (so->so_options & SO_ACCEPTCONN) {
439 db_printf("sol_incomp first: %p ",
440 TAILQ_FIRST(&so->sol_incomp));
441 db_printf("sol_comp first: %p\n", TAILQ_FIRST(&so->sol_comp));
442 db_printf("sol_qlen: %d ", so->sol_qlen);
443 db_printf("sol_incqlen: %d ", so->sol_incqlen);
444 db_printf("sol_qlimit: %d ", so->sol_qlimit);
445 } else {
446 db_printf("so_qstate: 0x%x (", so->so_qstate);
447 db_print_soqstate(so->so_qstate);
448 db_printf(") ");
449 db_printf("so_listen: %p ", so->so_listen);
450 /* so_list skipped */
451 db_printf("so_timeo: %d ", so->so_timeo);
452 db_printf("so_error: %d\n", so->so_error);
453
454 db_print_indent(indent);
455 db_printf("so_sigio: %p ", so->so_sigio);
456 db_printf("so_oobmark: %lu\n", so->so_oobmark);
457
458 db_print_sockbuf(&so->so_rcv, "so_rcv", indent);
459 db_print_sockbuf(&so->so_snd, "so_snd", indent);
460 }
461 }
462
463 DB_SHOW_COMMAND(socket, db_show_socket)
464 {
465 struct socket *so;
466
467 if (!have_addr) {
468 db_printf("usage: show socket <addr>\n");
469 return;
470 }
471 so = (struct socket *)addr;
472
473 db_print_socket(so, "socket", 0);
474 }
475
476 DB_SHOW_COMMAND(sockbuf, db_show_sockbuf)
477 {
478 struct sockbuf *sb;
479
480 if (!have_addr) {
481 db_printf("usage: show sockbuf <addr>\n");
482 return;
483 }
484 sb = (struct sockbuf *)addr;
485
486 db_print_sockbuf(sb, "sockbuf", 0);
487 }
488
489 DB_SHOW_COMMAND(protosw, db_show_protosw)
490 {
491 struct protosw *pr;
492
493 if (!have_addr) {
494 db_printf("usage: show protosw <addr>\n");
495 return;
496 }
497 pr = (struct protosw *)addr;
498
499 db_print_protosw(pr, "protosw", 0);
500 }
501
502 DB_SHOW_COMMAND(domain, db_show_domain)
503 {
504 struct domain *d;
505
506 if (!have_addr) {
507 db_printf("usage: show protosw <addr>\n");
508 return;
509 }
510 d = (struct domain *)addr;
511
512 db_print_domain(d, "domain", 0);
513 }
514 #endif
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