Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
ba75bb98 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
ba75bb98 | 5 | #include <linux/types.h> |
5a0e3ad6 | 6 | #include <linux/slab.h> |
ba75bb98 SW |
7 | #include <linux/random.h> |
8 | #include <linux/sched.h> | |
9 | ||
220abf5a | 10 | #include <linux/ceph/ceph_features.h> |
3d14c5d2 YS |
11 | #include <linux/ceph/mon_client.h> |
12 | #include <linux/ceph/libceph.h> | |
ab434b60 | 13 | #include <linux/ceph/debugfs.h> |
3d14c5d2 | 14 | #include <linux/ceph/decode.h> |
3d14c5d2 | 15 | #include <linux/ceph/auth.h> |
ba75bb98 SW |
16 | |
17 | /* | |
18 | * Interact with Ceph monitor cluster. Handle requests for new map | |
19 | * versions, and periodically resend as needed. Also implement | |
20 | * statfs() and umount(). | |
21 | * | |
22 | * A small cluster of Ceph "monitors" are responsible for managing critical | |
23 | * cluster configuration and state information. An odd number (e.g., 3, 5) | |
24 | * of cmon daemons use a modified version of the Paxos part-time parliament | |
25 | * algorithm to manage the MDS map (mds cluster membership), OSD map, and | |
26 | * list of clients who have mounted the file system. | |
27 | * | |
28 | * We maintain an open, active session with a monitor at all times in order to | |
29 | * receive timely MDSMap updates. We periodically send a keepalive byte on the | |
30 | * TCP socket to ensure we detect a failure. If the connection does break, we | |
31 | * randomly hunt for a new monitor. Once the connection is reestablished, we | |
32 | * resend any outstanding requests. | |
33 | */ | |
34 | ||
9e32789f | 35 | static const struct ceph_connection_operations mon_con_ops; |
ba75bb98 | 36 | |
9bd2e6f8 SW |
37 | static int __validate_auth(struct ceph_mon_client *monc); |
38 | ||
a5cbd5fc ID |
39 | static int decode_mon_info(void **p, void *end, bool msgr2, |
40 | struct ceph_entity_addr *addr) | |
41 | { | |
42 | void *mon_info_end; | |
43 | u32 struct_len; | |
44 | u8 struct_v; | |
45 | int ret; | |
46 | ||
47 | ret = ceph_start_decoding(p, end, 1, "mon_info_t", &struct_v, | |
48 | &struct_len); | |
49 | if (ret) | |
50 | return ret; | |
51 | ||
52 | mon_info_end = *p + struct_len; | |
53 | ceph_decode_skip_string(p, end, e_inval); /* skip mon name */ | |
54 | ret = ceph_decode_entity_addrvec(p, end, msgr2, addr); | |
55 | if (ret) | |
56 | return ret; | |
57 | ||
58 | *p = mon_info_end; | |
59 | return 0; | |
60 | ||
61 | e_inval: | |
62 | return -EINVAL; | |
63 | } | |
64 | ||
ba75bb98 SW |
65 | /* |
66 | * Decode a monmap blob (e.g., during mount). | |
a5cbd5fc ID |
67 | * |
68 | * Assume MonMap v3 (i.e. encoding with MONNAMES and MONENC). | |
ba75bb98 | 69 | */ |
a5cbd5fc | 70 | static struct ceph_monmap *ceph_monmap_decode(void **p, void *end, bool msgr2) |
ba75bb98 | 71 | { |
a5cbd5fc | 72 | struct ceph_monmap *monmap = NULL; |
ba75bb98 | 73 | struct ceph_fsid fsid; |
a5cbd5fc ID |
74 | u32 struct_len; |
75 | int blob_len; | |
76 | int num_mon; | |
77 | u8 struct_v; | |
78 | u32 epoch; | |
79 | int ret; | |
80 | int i; | |
81 | ||
82 | ceph_decode_32_safe(p, end, blob_len, e_inval); | |
83 | ceph_decode_need(p, end, blob_len, e_inval); | |
84 | ||
85 | ret = ceph_start_decoding(p, end, 6, "monmap", &struct_v, &struct_len); | |
86 | if (ret) | |
87 | goto fail; | |
88 | ||
89 | dout("%s struct_v %d\n", __func__, struct_v); | |
90 | ceph_decode_copy_safe(p, end, &fsid, sizeof(fsid), e_inval); | |
91 | ceph_decode_32_safe(p, end, epoch, e_inval); | |
92 | if (struct_v >= 6) { | |
93 | u32 feat_struct_len; | |
94 | u8 feat_struct_v; | |
4e7a5dcd | 95 | |
a5cbd5fc ID |
96 | *p += sizeof(struct ceph_timespec); /* skip last_changed */ |
97 | *p += sizeof(struct ceph_timespec); /* skip created */ | |
ba75bb98 | 98 | |
a5cbd5fc ID |
99 | ret = ceph_start_decoding(p, end, 1, "mon_feature_t", |
100 | &feat_struct_v, &feat_struct_len); | |
101 | if (ret) | |
102 | goto fail; | |
ba75bb98 | 103 | |
a5cbd5fc | 104 | *p += feat_struct_len; /* skip persistent_features */ |
ba75bb98 | 105 | |
a5cbd5fc ID |
106 | ret = ceph_start_decoding(p, end, 1, "mon_feature_t", |
107 | &feat_struct_v, &feat_struct_len); | |
108 | if (ret) | |
109 | goto fail; | |
ba75bb98 | 110 | |
a5cbd5fc ID |
111 | *p += feat_struct_len; /* skip optional_features */ |
112 | } | |
113 | ceph_decode_32_safe(p, end, num_mon, e_inval); | |
114 | ||
115 | dout("%s fsid %pU epoch %u num_mon %d\n", __func__, &fsid, epoch, | |
116 | num_mon); | |
7377324e | 117 | if (num_mon > CEPH_MAX_MON) |
a5cbd5fc ID |
118 | goto e_inval; |
119 | ||
120 | monmap = kmalloc(struct_size(monmap, mon_inst, num_mon), GFP_NOIO); | |
121 | if (!monmap) { | |
122 | ret = -ENOMEM; | |
123 | goto fail; | |
0bfb0f28 | 124 | } |
a5cbd5fc ID |
125 | monmap->fsid = fsid; |
126 | monmap->epoch = epoch; | |
127 | monmap->num_mon = num_mon; | |
128 | ||
129 | /* legacy_mon_addr map or mon_info map */ | |
130 | for (i = 0; i < num_mon; i++) { | |
131 | struct ceph_entity_inst *inst = &monmap->mon_inst[i]; | |
132 | ||
133 | ceph_decode_skip_string(p, end, e_inval); /* skip mon name */ | |
134 | inst->name.type = CEPH_ENTITY_TYPE_MON; | |
135 | inst->name.num = cpu_to_le64(i); | |
136 | ||
137 | if (struct_v >= 6) | |
138 | ret = decode_mon_info(p, end, msgr2, &inst->addr); | |
139 | else | |
140 | ret = ceph_decode_entity_addr(p, end, &inst->addr); | |
141 | if (ret) | |
142 | goto fail; | |
143 | ||
144 | dout("%s mon%d addr %s\n", __func__, i, | |
145 | ceph_pr_addr(&inst->addr)); | |
146 | } | |
147 | ||
148 | return monmap; | |
149 | ||
150 | e_inval: | |
151 | ret = -EINVAL; | |
152 | fail: | |
153 | kfree(monmap); | |
154 | return ERR_PTR(ret); | |
ba75bb98 SW |
155 | } |
156 | ||
157 | /* | |
158 | * return true if *addr is included in the monmap. | |
159 | */ | |
160 | int ceph_monmap_contains(struct ceph_monmap *m, struct ceph_entity_addr *addr) | |
161 | { | |
162 | int i; | |
163 | ||
313771e8 ID |
164 | for (i = 0; i < m->num_mon; i++) { |
165 | if (ceph_addr_equal_no_type(addr, &m->mon_inst[i].addr)) | |
ba75bb98 | 166 | return 1; |
313771e8 ID |
167 | } |
168 | ||
ba75bb98 SW |
169 | return 0; |
170 | } | |
171 | ||
5ce6e9db SW |
172 | /* |
173 | * Send an auth request. | |
174 | */ | |
175 | static void __send_prepared_auth_request(struct ceph_mon_client *monc, int len) | |
176 | { | |
177 | monc->pending_auth = 1; | |
178 | monc->m_auth->front.iov_len = len; | |
179 | monc->m_auth->hdr.front_len = cpu_to_le32(len); | |
6740a845 | 180 | ceph_msg_revoke(monc->m_auth); |
5ce6e9db | 181 | ceph_msg_get(monc->m_auth); /* keep our ref */ |
67130934 | 182 | ceph_con_send(&monc->con, monc->m_auth); |
5ce6e9db SW |
183 | } |
184 | ||
ba75bb98 SW |
185 | /* |
186 | * Close monitor session, if any. | |
187 | */ | |
188 | static void __close_session(struct ceph_mon_client *monc) | |
189 | { | |
f6a2f5be | 190 | dout("__close_session closing mon%d\n", monc->cur_mon); |
6740a845 | 191 | ceph_msg_revoke(monc->m_auth); |
4f471e4a SW |
192 | ceph_msg_revoke_incoming(monc->m_auth_reply); |
193 | ceph_msg_revoke(monc->m_subscribe); | |
194 | ceph_msg_revoke_incoming(monc->m_subscribe_ack); | |
67130934 | 195 | ceph_con_close(&monc->con); |
0e04dc26 | 196 | |
f6a2f5be SW |
197 | monc->pending_auth = 0; |
198 | ceph_auth_reset(monc->auth); | |
ba75bb98 SW |
199 | } |
200 | ||
201 | /* | |
0e04dc26 ID |
202 | * Pick a new monitor at random and set cur_mon. If we are repicking |
203 | * (i.e. cur_mon is already set), be sure to pick a different one. | |
ba75bb98 | 204 | */ |
0e04dc26 | 205 | static void pick_new_mon(struct ceph_mon_client *monc) |
ba75bb98 | 206 | { |
0e04dc26 | 207 | int old_mon = monc->cur_mon; |
ba75bb98 | 208 | |
0e04dc26 | 209 | BUG_ON(monc->monmap->num_mon < 1); |
ba75bb98 | 210 | |
0e04dc26 ID |
211 | if (monc->monmap->num_mon == 1) { |
212 | monc->cur_mon = 0; | |
213 | } else { | |
214 | int max = monc->monmap->num_mon; | |
215 | int o = -1; | |
216 | int n; | |
217 | ||
218 | if (monc->cur_mon >= 0) { | |
219 | if (monc->cur_mon < monc->monmap->num_mon) | |
220 | o = monc->cur_mon; | |
221 | if (o >= 0) | |
222 | max--; | |
223 | } | |
4e7a5dcd | 224 | |
8032bf12 | 225 | n = get_random_u32_below(max); |
0e04dc26 ID |
226 | if (o >= 0 && n >= o) |
227 | n++; | |
8b9558aa | 228 | |
0e04dc26 | 229 | monc->cur_mon = n; |
ba75bb98 | 230 | } |
0e04dc26 ID |
231 | |
232 | dout("%s mon%d -> mon%d out of %d mons\n", __func__, old_mon, | |
233 | monc->cur_mon, monc->monmap->num_mon); | |
234 | } | |
235 | ||
236 | /* | |
237 | * Open a session with a new monitor. | |
238 | */ | |
239 | static void __open_session(struct ceph_mon_client *monc) | |
240 | { | |
241 | int ret; | |
242 | ||
243 | pick_new_mon(monc); | |
244 | ||
1752b50c | 245 | monc->hunting = true; |
168b9090 ID |
246 | if (monc->had_a_connection) { |
247 | monc->hunt_mult *= CEPH_MONC_HUNT_BACKOFF; | |
248 | if (monc->hunt_mult > CEPH_MONC_HUNT_MAX_MULT) | |
249 | monc->hunt_mult = CEPH_MONC_HUNT_MAX_MULT; | |
250 | } | |
251 | ||
0e04dc26 ID |
252 | monc->sub_renew_after = jiffies; /* i.e., expired */ |
253 | monc->sub_renew_sent = 0; | |
254 | ||
255 | dout("%s opening mon%d\n", __func__, monc->cur_mon); | |
256 | ceph_con_open(&monc->con, CEPH_ENTITY_TYPE_MON, monc->cur_mon, | |
257 | &monc->monmap->mon_inst[monc->cur_mon].addr); | |
258 | ||
259 | /* | |
cd1a677c ID |
260 | * Queue a keepalive to ensure that in case of an early fault |
261 | * the messenger doesn't put us into STANDBY state and instead | |
262 | * retries. This also ensures that our timestamp is valid by | |
263 | * the time we finish hunting and delayed_work() checks it. | |
0e04dc26 ID |
264 | */ |
265 | ceph_con_keepalive(&monc->con); | |
cd1a677c ID |
266 | if (ceph_msgr2(monc->client)) { |
267 | monc->pending_auth = 1; | |
268 | return; | |
269 | } | |
0e04dc26 ID |
270 | |
271 | /* initiate authentication handshake */ | |
272 | ret = ceph_auth_build_hello(monc->auth, | |
273 | monc->m_auth->front.iov_base, | |
274 | monc->m_auth->front_alloc_len); | |
275 | BUG_ON(ret <= 0); | |
276 | __send_prepared_auth_request(monc, ret); | |
ba75bb98 SW |
277 | } |
278 | ||
1752b50c ID |
279 | static void reopen_session(struct ceph_mon_client *monc) |
280 | { | |
281 | if (!monc->hunting) | |
282 | pr_info("mon%d %s session lost, hunting for new mon\n", | |
b726ec97 | 283 | monc->cur_mon, ceph_pr_addr(&monc->con.peer_addr)); |
1752b50c ID |
284 | |
285 | __close_session(monc); | |
286 | __open_session(monc); | |
287 | } | |
288 | ||
120a75ea YZ |
289 | void ceph_monc_reopen_session(struct ceph_mon_client *monc) |
290 | { | |
291 | mutex_lock(&monc->mutex); | |
292 | reopen_session(monc); | |
293 | mutex_unlock(&monc->mutex); | |
294 | } | |
295 | ||
facb9f6e ID |
296 | static void un_backoff(struct ceph_mon_client *monc) |
297 | { | |
298 | monc->hunt_mult /= 2; /* reduce by 50% */ | |
299 | if (monc->hunt_mult < 1) | |
300 | monc->hunt_mult = 1; | |
301 | dout("%s hunt_mult now %d\n", __func__, monc->hunt_mult); | |
302 | } | |
303 | ||
ba75bb98 SW |
304 | /* |
305 | * Reschedule delayed work timer. | |
306 | */ | |
307 | static void __schedule_delayed(struct ceph_mon_client *monc) | |
308 | { | |
8b9558aa | 309 | unsigned long delay; |
ba75bb98 | 310 | |
168b9090 ID |
311 | if (monc->hunting) |
312 | delay = CEPH_MONC_HUNT_INTERVAL * monc->hunt_mult; | |
313 | else | |
58d81b12 | 314 | delay = CEPH_MONC_PING_INTERVAL; |
168b9090 | 315 | |
8b9558aa | 316 | dout("__schedule_delayed after %lu\n", delay); |
bee3a37c ID |
317 | mod_delayed_work(system_wq, &monc->delayed_work, |
318 | round_jiffies_relative(delay)); | |
ba75bb98 SW |
319 | } |
320 | ||
82dcabad | 321 | const char *ceph_sub_str[] = { |
82dcabad ID |
322 | [CEPH_SUB_MONMAP] = "monmap", |
323 | [CEPH_SUB_OSDMAP] = "osdmap", | |
0cabbd94 YZ |
324 | [CEPH_SUB_FSMAP] = "fsmap.user", |
325 | [CEPH_SUB_MDSMAP] = "mdsmap", | |
82dcabad ID |
326 | }; |
327 | ||
ba75bb98 | 328 | /* |
82dcabad ID |
329 | * Send subscribe request for one or more maps, according to |
330 | * monc->subs. | |
ba75bb98 SW |
331 | */ |
332 | static void __send_subscribe(struct ceph_mon_client *monc) | |
333 | { | |
82dcabad ID |
334 | struct ceph_msg *msg = monc->m_subscribe; |
335 | void *p = msg->front.iov_base; | |
336 | void *const end = p + msg->front_alloc_len; | |
337 | int num = 0; | |
338 | int i; | |
339 | ||
340 | dout("%s sent %lu\n", __func__, monc->sub_renew_sent); | |
341 | ||
342 | BUG_ON(monc->cur_mon < 0); | |
343 | ||
344 | if (!monc->sub_renew_sent) | |
345 | monc->sub_renew_sent = jiffies | 1; /* never 0 */ | |
346 | ||
347 | msg->hdr.version = cpu_to_le16(2); | |
348 | ||
349 | for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { | |
350 | if (monc->subs[i].want) | |
351 | num++; | |
352 | } | |
353 | BUG_ON(num < 1); /* monmap sub is always there */ | |
354 | ceph_encode_32(&p, num); | |
355 | for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { | |
737cc81e ID |
356 | char buf[32]; |
357 | int len; | |
82dcabad ID |
358 | |
359 | if (!monc->subs[i].want) | |
360 | continue; | |
361 | ||
737cc81e ID |
362 | len = sprintf(buf, "%s", ceph_sub_str[i]); |
363 | if (i == CEPH_SUB_MDSMAP && | |
364 | monc->fs_cluster_id != CEPH_FS_CLUSTER_ID_NONE) | |
365 | len += sprintf(buf + len, ".%d", monc->fs_cluster_id); | |
366 | ||
367 | dout("%s %s start %llu flags 0x%x\n", __func__, buf, | |
82dcabad ID |
368 | le64_to_cpu(monc->subs[i].item.start), |
369 | monc->subs[i].item.flags); | |
737cc81e | 370 | ceph_encode_string(&p, end, buf, len); |
82dcabad ID |
371 | memcpy(p, &monc->subs[i].item, sizeof(monc->subs[i].item)); |
372 | p += sizeof(monc->subs[i].item); | |
ba75bb98 | 373 | } |
82dcabad | 374 | |
737cc81e | 375 | BUG_ON(p > end); |
82dcabad ID |
376 | msg->front.iov_len = p - msg->front.iov_base; |
377 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
378 | ceph_msg_revoke(msg); | |
379 | ceph_con_send(&monc->con, ceph_msg_get(msg)); | |
ba75bb98 SW |
380 | } |
381 | ||
382 | static void handle_subscribe_ack(struct ceph_mon_client *monc, | |
383 | struct ceph_msg *msg) | |
384 | { | |
95c96174 | 385 | unsigned int seconds; |
07bd10fb SW |
386 | struct ceph_mon_subscribe_ack *h = msg->front.iov_base; |
387 | ||
388 | if (msg->front.iov_len < sizeof(*h)) | |
389 | goto bad; | |
390 | seconds = le32_to_cpu(h->duration); | |
ba75bb98 | 391 | |
ba75bb98 | 392 | mutex_lock(&monc->mutex); |
82dcabad | 393 | if (monc->sub_renew_sent) { |
220abf5a ID |
394 | /* |
395 | * This is only needed for legacy (infernalis or older) | |
396 | * MONs -- see delayed_work(). | |
397 | */ | |
82dcabad ID |
398 | monc->sub_renew_after = monc->sub_renew_sent + |
399 | (seconds >> 1) * HZ - 1; | |
400 | dout("%s sent %lu duration %d renew after %lu\n", __func__, | |
401 | monc->sub_renew_sent, seconds, monc->sub_renew_after); | |
402 | monc->sub_renew_sent = 0; | |
403 | } else { | |
404 | dout("%s sent %lu renew after %lu, ignoring\n", __func__, | |
405 | monc->sub_renew_sent, monc->sub_renew_after); | |
406 | } | |
ba75bb98 SW |
407 | mutex_unlock(&monc->mutex); |
408 | return; | |
409 | bad: | |
410 | pr_err("got corrupt subscribe-ack msg\n"); | |
9ec7cab1 | 411 | ceph_msg_dump(msg); |
ba75bb98 SW |
412 | } |
413 | ||
414 | /* | |
82dcabad ID |
415 | * Register interest in a map |
416 | * | |
417 | * @sub: one of CEPH_SUB_* | |
418 | * @epoch: X for "every map since X", or 0 for "just the latest" | |
ba75bb98 | 419 | */ |
82dcabad ID |
420 | static bool __ceph_monc_want_map(struct ceph_mon_client *monc, int sub, |
421 | u32 epoch, bool continuous) | |
ba75bb98 | 422 | { |
82dcabad ID |
423 | __le64 start = cpu_to_le64(epoch); |
424 | u8 flags = !continuous ? CEPH_SUBSCRIBE_ONETIME : 0; | |
425 | ||
426 | dout("%s %s epoch %u continuous %d\n", __func__, ceph_sub_str[sub], | |
427 | epoch, continuous); | |
428 | ||
429 | if (monc->subs[sub].want && | |
430 | monc->subs[sub].item.start == start && | |
431 | monc->subs[sub].item.flags == flags) | |
432 | return false; | |
433 | ||
434 | monc->subs[sub].item.start = start; | |
435 | monc->subs[sub].item.flags = flags; | |
436 | monc->subs[sub].want = true; | |
437 | ||
438 | return true; | |
439 | } | |
440 | ||
441 | bool ceph_monc_want_map(struct ceph_mon_client *monc, int sub, u32 epoch, | |
442 | bool continuous) | |
443 | { | |
444 | bool need_request; | |
445 | ||
ba75bb98 | 446 | mutex_lock(&monc->mutex); |
82dcabad | 447 | need_request = __ceph_monc_want_map(monc, sub, epoch, continuous); |
ba75bb98 | 448 | mutex_unlock(&monc->mutex); |
82dcabad ID |
449 | |
450 | return need_request; | |
451 | } | |
452 | EXPORT_SYMBOL(ceph_monc_want_map); | |
453 | ||
454 | /* | |
455 | * Keep track of which maps we have | |
456 | * | |
457 | * @sub: one of CEPH_SUB_* | |
458 | */ | |
459 | static void __ceph_monc_got_map(struct ceph_mon_client *monc, int sub, | |
460 | u32 epoch) | |
461 | { | |
462 | dout("%s %s epoch %u\n", __func__, ceph_sub_str[sub], epoch); | |
463 | ||
464 | if (monc->subs[sub].want) { | |
465 | if (monc->subs[sub].item.flags & CEPH_SUBSCRIBE_ONETIME) | |
466 | monc->subs[sub].want = false; | |
467 | else | |
468 | monc->subs[sub].item.start = cpu_to_le64(epoch + 1); | |
469 | } | |
470 | ||
471 | monc->subs[sub].have = epoch; | |
ba75bb98 SW |
472 | } |
473 | ||
82dcabad | 474 | void ceph_monc_got_map(struct ceph_mon_client *monc, int sub, u32 epoch) |
ba75bb98 SW |
475 | { |
476 | mutex_lock(&monc->mutex); | |
82dcabad | 477 | __ceph_monc_got_map(monc, sub, epoch); |
ba75bb98 | 478 | mutex_unlock(&monc->mutex); |
ba75bb98 | 479 | } |
82dcabad | 480 | EXPORT_SYMBOL(ceph_monc_got_map); |
ba75bb98 | 481 | |
42c1b124 ID |
482 | void ceph_monc_renew_subs(struct ceph_mon_client *monc) |
483 | { | |
484 | mutex_lock(&monc->mutex); | |
485 | __send_subscribe(monc); | |
486 | mutex_unlock(&monc->mutex); | |
487 | } | |
488 | EXPORT_SYMBOL(ceph_monc_renew_subs); | |
489 | ||
a319bf56 ID |
490 | /* |
491 | * Wait for an osdmap with a given epoch. | |
492 | * | |
493 | * @epoch: epoch to wait for | |
494 | * @timeout: in jiffies, 0 means "wait forever" | |
495 | */ | |
6044cde6 ID |
496 | int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch, |
497 | unsigned long timeout) | |
498 | { | |
499 | unsigned long started = jiffies; | |
216639dd | 500 | long ret; |
6044cde6 ID |
501 | |
502 | mutex_lock(&monc->mutex); | |
82dcabad | 503 | while (monc->subs[CEPH_SUB_OSDMAP].have < epoch) { |
6044cde6 ID |
504 | mutex_unlock(&monc->mutex); |
505 | ||
a319bf56 | 506 | if (timeout && time_after_eq(jiffies, started + timeout)) |
6044cde6 ID |
507 | return -ETIMEDOUT; |
508 | ||
509 | ret = wait_event_interruptible_timeout(monc->client->auth_wq, | |
82dcabad ID |
510 | monc->subs[CEPH_SUB_OSDMAP].have >= epoch, |
511 | ceph_timeout_jiffies(timeout)); | |
6044cde6 ID |
512 | if (ret < 0) |
513 | return ret; | |
514 | ||
515 | mutex_lock(&monc->mutex); | |
516 | } | |
517 | ||
518 | mutex_unlock(&monc->mutex); | |
519 | return 0; | |
520 | } | |
521 | EXPORT_SYMBOL(ceph_monc_wait_osdmap); | |
ba75bb98 | 522 | |
4e7a5dcd | 523 | /* |
82dcabad ID |
524 | * Open a session with a random monitor. Request monmap and osdmap, |
525 | * which are waited upon in __ceph_open_session(). | |
4e7a5dcd SW |
526 | */ |
527 | int ceph_monc_open_session(struct ceph_mon_client *monc) | |
ba75bb98 | 528 | { |
ba75bb98 | 529 | mutex_lock(&monc->mutex); |
82dcabad ID |
530 | __ceph_monc_want_map(monc, CEPH_SUB_MONMAP, 0, true); |
531 | __ceph_monc_want_map(monc, CEPH_SUB_OSDMAP, 0, false); | |
4e7a5dcd | 532 | __open_session(monc); |
ba75bb98 SW |
533 | __schedule_delayed(monc); |
534 | mutex_unlock(&monc->mutex); | |
535 | return 0; | |
536 | } | |
3d14c5d2 | 537 | EXPORT_SYMBOL(ceph_monc_open_session); |
ba75bb98 | 538 | |
0743304d SW |
539 | static void ceph_monc_handle_map(struct ceph_mon_client *monc, |
540 | struct ceph_msg *msg) | |
4e7a5dcd SW |
541 | { |
542 | struct ceph_client *client = monc->client; | |
4d8b8fb4 | 543 | struct ceph_monmap *monmap; |
4e7a5dcd SW |
544 | void *p, *end; |
545 | ||
546 | mutex_lock(&monc->mutex); | |
547 | ||
548 | dout("handle_monmap\n"); | |
549 | p = msg->front.iov_base; | |
550 | end = p + msg->front.iov_len; | |
551 | ||
cd1a677c | 552 | monmap = ceph_monmap_decode(&p, end, ceph_msgr2(client)); |
4e7a5dcd SW |
553 | if (IS_ERR(monmap)) { |
554 | pr_err("problem decoding monmap, %d\n", | |
555 | (int)PTR_ERR(monmap)); | |
0bfb0f28 | 556 | ceph_msg_dump(msg); |
d4a780ce | 557 | goto out; |
4e7a5dcd | 558 | } |
0743304d | 559 | |
4d8b8fb4 | 560 | if (ceph_check_fsid(client, &monmap->fsid) < 0) { |
4e7a5dcd | 561 | kfree(monmap); |
d4a780ce | 562 | goto out; |
4e7a5dcd SW |
563 | } |
564 | ||
4d8b8fb4 ID |
565 | kfree(monc->monmap); |
566 | monc->monmap = monmap; | |
4e7a5dcd | 567 | |
82dcabad | 568 | __ceph_monc_got_map(monc, CEPH_SUB_MONMAP, monc->monmap->epoch); |
02ac956c | 569 | client->have_fsid = true; |
d1c338a5 | 570 | |
d4a780ce | 571 | out: |
4e7a5dcd | 572 | mutex_unlock(&monc->mutex); |
03066f23 | 573 | wake_up_all(&client->auth_wq); |
4e7a5dcd SW |
574 | } |
575 | ||
ba75bb98 | 576 | /* |
7a6fdeb2 | 577 | * generic requests (currently statfs, mon_get_version) |
ba75bb98 | 578 | */ |
fcd00b68 | 579 | DEFINE_RB_FUNCS(generic_request, struct ceph_mon_generic_request, tid, node) |
85ff03f6 | 580 | |
f8c76f6f | 581 | static void release_generic_request(struct kref *kref) |
3143edd3 | 582 | { |
f8c76f6f YS |
583 | struct ceph_mon_generic_request *req = |
584 | container_of(kref, struct ceph_mon_generic_request, kref); | |
3143edd3 | 585 | |
d0b19705 ID |
586 | dout("%s greq %p request %p reply %p\n", __func__, req, req->request, |
587 | req->reply); | |
588 | WARN_ON(!RB_EMPTY_NODE(&req->node)); | |
589 | ||
3143edd3 SW |
590 | if (req->reply) |
591 | ceph_msg_put(req->reply); | |
592 | if (req->request) | |
593 | ceph_msg_put(req->request); | |
20547567 YS |
594 | |
595 | kfree(req); | |
3143edd3 SW |
596 | } |
597 | ||
f8c76f6f | 598 | static void put_generic_request(struct ceph_mon_generic_request *req) |
3143edd3 | 599 | { |
d0b19705 ID |
600 | if (req) |
601 | kref_put(&req->kref, release_generic_request); | |
3143edd3 SW |
602 | } |
603 | ||
f8c76f6f | 604 | static void get_generic_request(struct ceph_mon_generic_request *req) |
3143edd3 SW |
605 | { |
606 | kref_get(&req->kref); | |
607 | } | |
608 | ||
d0b19705 ID |
609 | static struct ceph_mon_generic_request * |
610 | alloc_generic_request(struct ceph_mon_client *monc, gfp_t gfp) | |
611 | { | |
612 | struct ceph_mon_generic_request *req; | |
613 | ||
614 | req = kzalloc(sizeof(*req), gfp); | |
615 | if (!req) | |
616 | return NULL; | |
617 | ||
618 | req->monc = monc; | |
619 | kref_init(&req->kref); | |
620 | RB_CLEAR_NODE(&req->node); | |
621 | init_completion(&req->completion); | |
622 | ||
623 | dout("%s greq %p\n", __func__, req); | |
624 | return req; | |
625 | } | |
626 | ||
627 | static void register_generic_request(struct ceph_mon_generic_request *req) | |
628 | { | |
629 | struct ceph_mon_client *monc = req->monc; | |
630 | ||
631 | WARN_ON(req->tid); | |
632 | ||
633 | get_generic_request(req); | |
634 | req->tid = ++monc->last_tid; | |
635 | insert_generic_request(&monc->generic_request_tree, req); | |
636 | } | |
637 | ||
638 | static void send_generic_request(struct ceph_mon_client *monc, | |
639 | struct ceph_mon_generic_request *req) | |
640 | { | |
641 | WARN_ON(!req->tid); | |
642 | ||
643 | dout("%s greq %p tid %llu\n", __func__, req, req->tid); | |
644 | req->request->hdr.tid = cpu_to_le64(req->tid); | |
645 | ceph_con_send(&monc->con, ceph_msg_get(req->request)); | |
646 | } | |
647 | ||
648 | static void __finish_generic_request(struct ceph_mon_generic_request *req) | |
649 | { | |
650 | struct ceph_mon_client *monc = req->monc; | |
651 | ||
652 | dout("%s greq %p tid %llu\n", __func__, req, req->tid); | |
653 | erase_generic_request(&monc->generic_request_tree, req); | |
654 | ||
655 | ceph_msg_revoke(req->request); | |
656 | ceph_msg_revoke_incoming(req->reply); | |
657 | } | |
658 | ||
659 | static void finish_generic_request(struct ceph_mon_generic_request *req) | |
660 | { | |
661 | __finish_generic_request(req); | |
662 | put_generic_request(req); | |
663 | } | |
664 | ||
665 | static void complete_generic_request(struct ceph_mon_generic_request *req) | |
666 | { | |
667 | if (req->complete_cb) | |
668 | req->complete_cb(req); | |
669 | else | |
670 | complete_all(&req->completion); | |
671 | put_generic_request(req); | |
672 | } | |
673 | ||
f52ec33c | 674 | static void cancel_generic_request(struct ceph_mon_generic_request *req) |
d0b19705 ID |
675 | { |
676 | struct ceph_mon_client *monc = req->monc; | |
677 | struct ceph_mon_generic_request *lookup_req; | |
678 | ||
679 | dout("%s greq %p tid %llu\n", __func__, req, req->tid); | |
680 | ||
681 | mutex_lock(&monc->mutex); | |
682 | lookup_req = lookup_generic_request(&monc->generic_request_tree, | |
683 | req->tid); | |
684 | if (lookup_req) { | |
685 | WARN_ON(lookup_req != req); | |
686 | finish_generic_request(req); | |
687 | } | |
688 | ||
689 | mutex_unlock(&monc->mutex); | |
690 | } | |
691 | ||
692 | static int wait_generic_request(struct ceph_mon_generic_request *req) | |
693 | { | |
694 | int ret; | |
695 | ||
696 | dout("%s greq %p tid %llu\n", __func__, req, req->tid); | |
697 | ret = wait_for_completion_interruptible(&req->completion); | |
698 | if (ret) | |
699 | cancel_generic_request(req); | |
700 | else | |
701 | ret = req->result; /* completed */ | |
702 | ||
703 | return ret; | |
704 | } | |
705 | ||
f8c76f6f | 706 | static struct ceph_msg *get_generic_reply(struct ceph_connection *con, |
3143edd3 SW |
707 | struct ceph_msg_header *hdr, |
708 | int *skip) | |
709 | { | |
710 | struct ceph_mon_client *monc = con->private; | |
f8c76f6f | 711 | struct ceph_mon_generic_request *req; |
3143edd3 SW |
712 | u64 tid = le64_to_cpu(hdr->tid); |
713 | struct ceph_msg *m; | |
714 | ||
715 | mutex_lock(&monc->mutex); | |
fcd00b68 | 716 | req = lookup_generic_request(&monc->generic_request_tree, tid); |
3143edd3 | 717 | if (!req) { |
f8c76f6f | 718 | dout("get_generic_reply %lld dne\n", tid); |
3143edd3 SW |
719 | *skip = 1; |
720 | m = NULL; | |
721 | } else { | |
f8c76f6f | 722 | dout("get_generic_reply %lld got %p\n", tid, req->reply); |
1c20f2d2 | 723 | *skip = 0; |
3143edd3 SW |
724 | m = ceph_msg_get(req->reply); |
725 | /* | |
726 | * we don't need to track the connection reading into | |
727 | * this reply because we only have one open connection | |
728 | * at a time, ever. | |
729 | */ | |
730 | } | |
731 | mutex_unlock(&monc->mutex); | |
732 | return m; | |
733 | } | |
734 | ||
e56fa10e YS |
735 | /* |
736 | * statfs | |
737 | */ | |
ba75bb98 SW |
738 | static void handle_statfs_reply(struct ceph_mon_client *monc, |
739 | struct ceph_msg *msg) | |
740 | { | |
f8c76f6f | 741 | struct ceph_mon_generic_request *req; |
ba75bb98 | 742 | struct ceph_mon_statfs_reply *reply = msg->front.iov_base; |
3143edd3 | 743 | u64 tid = le64_to_cpu(msg->hdr.tid); |
ba75bb98 | 744 | |
d0b19705 ID |
745 | dout("%s msg %p tid %llu\n", __func__, msg, tid); |
746 | ||
ba75bb98 SW |
747 | if (msg->front.iov_len != sizeof(*reply)) |
748 | goto bad; | |
ba75bb98 SW |
749 | |
750 | mutex_lock(&monc->mutex); | |
fcd00b68 | 751 | req = lookup_generic_request(&monc->generic_request_tree, tid); |
d0b19705 ID |
752 | if (!req) { |
753 | mutex_unlock(&monc->mutex); | |
754 | return; | |
ba75bb98 | 755 | } |
d0b19705 ID |
756 | |
757 | req->result = 0; | |
758 | *req->u.st = reply->st; /* struct */ | |
759 | __finish_generic_request(req); | |
ba75bb98 | 760 | mutex_unlock(&monc->mutex); |
d0b19705 ID |
761 | |
762 | complete_generic_request(req); | |
ba75bb98 SW |
763 | return; |
764 | ||
765 | bad: | |
7a6fdeb2 | 766 | pr_err("corrupt statfs reply, tid %llu\n", tid); |
9ec7cab1 | 767 | ceph_msg_dump(msg); |
ba75bb98 SW |
768 | } |
769 | ||
770 | /* | |
3143edd3 | 771 | * Do a synchronous statfs(). |
ba75bb98 | 772 | */ |
06d74376 DF |
773 | int ceph_monc_do_statfs(struct ceph_mon_client *monc, u64 data_pool, |
774 | struct ceph_statfs *buf) | |
ba75bb98 | 775 | { |
f8c76f6f | 776 | struct ceph_mon_generic_request *req; |
ba75bb98 | 777 | struct ceph_mon_statfs *h; |
d0b19705 | 778 | int ret = -ENOMEM; |
3143edd3 | 779 | |
d0b19705 | 780 | req = alloc_generic_request(monc, GFP_NOFS); |
3143edd3 | 781 | if (!req) |
d0b19705 | 782 | goto out; |
ba75bb98 | 783 | |
b61c2763 SW |
784 | req->request = ceph_msg_new(CEPH_MSG_STATFS, sizeof(*h), GFP_NOFS, |
785 | true); | |
a79832f2 | 786 | if (!req->request) |
3143edd3 | 787 | goto out; |
d0b19705 ID |
788 | |
789 | req->reply = ceph_msg_new(CEPH_MSG_STATFS_REPLY, 64, GFP_NOFS, true); | |
a79832f2 | 790 | if (!req->reply) |
3143edd3 | 791 | goto out; |
3143edd3 | 792 | |
d0b19705 | 793 | req->u.st = buf; |
06d74376 | 794 | req->request->hdr.version = cpu_to_le16(2); |
d0b19705 ID |
795 | |
796 | mutex_lock(&monc->mutex); | |
797 | register_generic_request(req); | |
3143edd3 SW |
798 | /* fill out request */ |
799 | h = req->request->front.iov_base; | |
13e38c8a SW |
800 | h->monhdr.have_version = 0; |
801 | h->monhdr.session_mon = cpu_to_le16(-1); | |
802 | h->monhdr.session_mon_tid = 0; | |
ba75bb98 | 803 | h->fsid = monc->monmap->fsid; |
06d74376 DF |
804 | h->contains_data_pool = (data_pool != CEPH_NOPOOL); |
805 | h->data_pool = cpu_to_le64(data_pool); | |
d0b19705 ID |
806 | send_generic_request(monc, req); |
807 | mutex_unlock(&monc->mutex); | |
ba75bb98 | 808 | |
d0b19705 | 809 | ret = wait_generic_request(req); |
e56fa10e | 810 | out: |
f646912d | 811 | put_generic_request(req); |
d0b19705 | 812 | return ret; |
e56fa10e | 813 | } |
3d14c5d2 | 814 | EXPORT_SYMBOL(ceph_monc_do_statfs); |
e56fa10e | 815 | |
513a8243 ID |
816 | static void handle_get_version_reply(struct ceph_mon_client *monc, |
817 | struct ceph_msg *msg) | |
818 | { | |
819 | struct ceph_mon_generic_request *req; | |
820 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
821 | void *p = msg->front.iov_base; | |
822 | void *end = p + msg->front_alloc_len; | |
823 | u64 handle; | |
824 | ||
d0b19705 | 825 | dout("%s msg %p tid %llu\n", __func__, msg, tid); |
513a8243 ID |
826 | |
827 | ceph_decode_need(&p, end, 2*sizeof(u64), bad); | |
828 | handle = ceph_decode_64(&p); | |
829 | if (tid != 0 && tid != handle) | |
830 | goto bad; | |
831 | ||
832 | mutex_lock(&monc->mutex); | |
fcd00b68 | 833 | req = lookup_generic_request(&monc->generic_request_tree, handle); |
d0b19705 ID |
834 | if (!req) { |
835 | mutex_unlock(&monc->mutex); | |
836 | return; | |
513a8243 | 837 | } |
d0b19705 ID |
838 | |
839 | req->result = 0; | |
840 | req->u.newest = ceph_decode_64(&p); | |
841 | __finish_generic_request(req); | |
513a8243 | 842 | mutex_unlock(&monc->mutex); |
513a8243 | 843 | |
d0b19705 | 844 | complete_generic_request(req); |
513a8243 | 845 | return; |
d0b19705 | 846 | |
513a8243 | 847 | bad: |
7a6fdeb2 | 848 | pr_err("corrupt mon_get_version reply, tid %llu\n", tid); |
513a8243 ID |
849 | ceph_msg_dump(msg); |
850 | } | |
851 | ||
d0b19705 ID |
852 | static struct ceph_mon_generic_request * |
853 | __ceph_monc_get_version(struct ceph_mon_client *monc, const char *what, | |
854 | ceph_monc_callback_t cb, u64 private_data) | |
513a8243 ID |
855 | { |
856 | struct ceph_mon_generic_request *req; | |
513a8243 | 857 | |
d0b19705 | 858 | req = alloc_generic_request(monc, GFP_NOIO); |
513a8243 | 859 | if (!req) |
d0b19705 | 860 | goto err_put_req; |
513a8243 ID |
861 | |
862 | req->request = ceph_msg_new(CEPH_MSG_MON_GET_VERSION, | |
863 | sizeof(u64) + sizeof(u32) + strlen(what), | |
d0b19705 ID |
864 | GFP_NOIO, true); |
865 | if (!req->request) | |
866 | goto err_put_req; | |
513a8243 | 867 | |
d0b19705 ID |
868 | req->reply = ceph_msg_new(CEPH_MSG_MON_GET_VERSION_REPLY, 32, GFP_NOIO, |
869 | true); | |
870 | if (!req->reply) | |
871 | goto err_put_req; | |
513a8243 | 872 | |
d0b19705 ID |
873 | req->complete_cb = cb; |
874 | req->private_data = private_data; | |
513a8243 | 875 | |
513a8243 | 876 | mutex_lock(&monc->mutex); |
d0b19705 ID |
877 | register_generic_request(req); |
878 | { | |
879 | void *p = req->request->front.iov_base; | |
880 | void *const end = p + req->request->front_alloc_len; | |
881 | ||
882 | ceph_encode_64(&p, req->tid); /* handle */ | |
883 | ceph_encode_string(&p, end, what, strlen(what)); | |
884 | WARN_ON(p != end); | |
885 | } | |
886 | send_generic_request(monc, req); | |
887 | mutex_unlock(&monc->mutex); | |
513a8243 | 888 | |
d0b19705 | 889 | return req; |
513a8243 | 890 | |
d0b19705 | 891 | err_put_req: |
f646912d | 892 | put_generic_request(req); |
d0b19705 | 893 | return ERR_PTR(-ENOMEM); |
513a8243 | 894 | } |
d0b19705 ID |
895 | |
896 | /* | |
897 | * Send MMonGetVersion and wait for the reply. | |
898 | * | |
899 | * @what: one of "mdsmap", "osdmap" or "monmap" | |
900 | */ | |
901 | int ceph_monc_get_version(struct ceph_mon_client *monc, const char *what, | |
902 | u64 *newest) | |
903 | { | |
904 | struct ceph_mon_generic_request *req; | |
905 | int ret; | |
906 | ||
907 | req = __ceph_monc_get_version(monc, what, NULL, 0); | |
908 | if (IS_ERR(req)) | |
909 | return PTR_ERR(req); | |
910 | ||
911 | ret = wait_generic_request(req); | |
912 | if (!ret) | |
913 | *newest = req->u.newest; | |
914 | ||
915 | put_generic_request(req); | |
916 | return ret; | |
917 | } | |
918 | EXPORT_SYMBOL(ceph_monc_get_version); | |
919 | ||
920 | /* | |
921 | * Send MMonGetVersion, | |
922 | * | |
923 | * @what: one of "mdsmap", "osdmap" or "monmap" | |
924 | */ | |
925 | int ceph_monc_get_version_async(struct ceph_mon_client *monc, const char *what, | |
926 | ceph_monc_callback_t cb, u64 private_data) | |
927 | { | |
928 | struct ceph_mon_generic_request *req; | |
929 | ||
930 | req = __ceph_monc_get_version(monc, what, cb, private_data); | |
931 | if (IS_ERR(req)) | |
932 | return PTR_ERR(req); | |
933 | ||
934 | put_generic_request(req); | |
935 | return 0; | |
936 | } | |
937 | EXPORT_SYMBOL(ceph_monc_get_version_async); | |
513a8243 | 938 | |
6305a3b4 DF |
939 | static void handle_command_ack(struct ceph_mon_client *monc, |
940 | struct ceph_msg *msg) | |
941 | { | |
942 | struct ceph_mon_generic_request *req; | |
943 | void *p = msg->front.iov_base; | |
944 | void *const end = p + msg->front_alloc_len; | |
945 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
946 | ||
947 | dout("%s msg %p tid %llu\n", __func__, msg, tid); | |
948 | ||
949 | ceph_decode_need(&p, end, sizeof(struct ceph_mon_request_header) + | |
950 | sizeof(u32), bad); | |
951 | p += sizeof(struct ceph_mon_request_header); | |
952 | ||
953 | mutex_lock(&monc->mutex); | |
954 | req = lookup_generic_request(&monc->generic_request_tree, tid); | |
955 | if (!req) { | |
956 | mutex_unlock(&monc->mutex); | |
957 | return; | |
958 | } | |
959 | ||
960 | req->result = ceph_decode_32(&p); | |
961 | __finish_generic_request(req); | |
962 | mutex_unlock(&monc->mutex); | |
963 | ||
964 | complete_generic_request(req); | |
965 | return; | |
966 | ||
967 | bad: | |
968 | pr_err("corrupt mon_command ack, tid %llu\n", tid); | |
969 | ceph_msg_dump(msg); | |
970 | } | |
971 | ||
1b05fae7 ID |
972 | static __printf(2, 0) |
973 | int do_mon_command_vargs(struct ceph_mon_client *monc, const char *fmt, | |
974 | va_list ap) | |
6305a3b4 DF |
975 | { |
976 | struct ceph_mon_generic_request *req; | |
977 | struct ceph_mon_command *h; | |
978 | int ret = -ENOMEM; | |
979 | int len; | |
980 | ||
981 | req = alloc_generic_request(monc, GFP_NOIO); | |
982 | if (!req) | |
983 | goto out; | |
984 | ||
985 | req->request = ceph_msg_new(CEPH_MSG_MON_COMMAND, 256, GFP_NOIO, true); | |
986 | if (!req->request) | |
987 | goto out; | |
988 | ||
989 | req->reply = ceph_msg_new(CEPH_MSG_MON_COMMAND_ACK, 512, GFP_NOIO, | |
990 | true); | |
991 | if (!req->reply) | |
992 | goto out; | |
993 | ||
994 | mutex_lock(&monc->mutex); | |
995 | register_generic_request(req); | |
996 | h = req->request->front.iov_base; | |
997 | h->monhdr.have_version = 0; | |
998 | h->monhdr.session_mon = cpu_to_le16(-1); | |
999 | h->monhdr.session_mon_tid = 0; | |
1000 | h->fsid = monc->monmap->fsid; | |
1001 | h->num_strs = cpu_to_le32(1); | |
1b05fae7 | 1002 | len = vsprintf(h->str, fmt, ap); |
6305a3b4 DF |
1003 | h->str_len = cpu_to_le32(len); |
1004 | send_generic_request(monc, req); | |
1005 | mutex_unlock(&monc->mutex); | |
1006 | ||
1007 | ret = wait_generic_request(req); | |
1008 | out: | |
1009 | put_generic_request(req); | |
1010 | return ret; | |
1011 | } | |
1b05fae7 ID |
1012 | |
1013 | static __printf(2, 3) | |
1014 | int do_mon_command(struct ceph_mon_client *monc, const char *fmt, ...) | |
1015 | { | |
1016 | va_list ap; | |
1017 | int ret; | |
1018 | ||
1019 | va_start(ap, fmt); | |
1020 | ret = do_mon_command_vargs(monc, fmt, ap); | |
1021 | va_end(ap); | |
1022 | return ret; | |
1023 | } | |
1024 | ||
1025 | int ceph_monc_blocklist_add(struct ceph_mon_client *monc, | |
1026 | struct ceph_entity_addr *client_addr) | |
1027 | { | |
1028 | int ret; | |
1029 | ||
1030 | ret = do_mon_command(monc, | |
1031 | "{ \"prefix\": \"osd blocklist\", \ | |
1032 | \"blocklistop\": \"add\", \ | |
1033 | \"addr\": \"%pISpc/%u\" }", | |
1034 | &client_addr->in_addr, | |
1035 | le32_to_cpu(client_addr->nonce)); | |
1036 | if (ret == -EINVAL) { | |
1037 | /* | |
1038 | * The monitor returns EINVAL on an unrecognized command. | |
1039 | * Try the legacy command -- it is exactly the same except | |
1040 | * for the name. | |
1041 | */ | |
1042 | ret = do_mon_command(monc, | |
1043 | "{ \"prefix\": \"osd blacklist\", \ | |
1044 | \"blacklistop\": \"add\", \ | |
1045 | \"addr\": \"%pISpc/%u\" }", | |
1046 | &client_addr->in_addr, | |
1047 | le32_to_cpu(client_addr->nonce)); | |
1048 | } | |
1049 | if (ret) | |
1050 | return ret; | |
1051 | ||
1052 | /* | |
1053 | * Make sure we have the osdmap that includes the blocklist | |
1054 | * entry. This is needed to ensure that the OSDs pick up the | |
1055 | * new blocklist before processing any future requests from | |
1056 | * this client. | |
1057 | */ | |
1058 | return ceph_wait_for_latest_osdmap(monc->client, 0); | |
1059 | } | |
0b98acd6 | 1060 | EXPORT_SYMBOL(ceph_monc_blocklist_add); |
6305a3b4 | 1061 | |
ba75bb98 | 1062 | /* |
e56fa10e | 1063 | * Resend pending generic requests. |
ba75bb98 | 1064 | */ |
f8c76f6f | 1065 | static void __resend_generic_request(struct ceph_mon_client *monc) |
ba75bb98 | 1066 | { |
f8c76f6f | 1067 | struct ceph_mon_generic_request *req; |
85ff03f6 | 1068 | struct rb_node *p; |
ba75bb98 | 1069 | |
f8c76f6f YS |
1070 | for (p = rb_first(&monc->generic_request_tree); p; p = rb_next(p)) { |
1071 | req = rb_entry(p, struct ceph_mon_generic_request, node); | |
6740a845 | 1072 | ceph_msg_revoke(req->request); |
4f471e4a | 1073 | ceph_msg_revoke_incoming(req->reply); |
67130934 | 1074 | ceph_con_send(&monc->con, ceph_msg_get(req->request)); |
ba75bb98 SW |
1075 | } |
1076 | } | |
1077 | ||
1078 | /* | |
1079 | * Delayed work. If we haven't mounted yet, retry. Otherwise, | |
1080 | * renew/retry subscription as needed (in case it is timing out, or we | |
1081 | * got an ENOMEM). And keep the monitor connection alive. | |
1082 | */ | |
1083 | static void delayed_work(struct work_struct *work) | |
1084 | { | |
1085 | struct ceph_mon_client *monc = | |
1086 | container_of(work, struct ceph_mon_client, delayed_work.work); | |
1087 | ||
1088 | dout("monc delayed_work\n"); | |
1089 | mutex_lock(&monc->mutex); | |
4e7a5dcd | 1090 | if (monc->hunting) { |
1752b50c ID |
1091 | dout("%s continuing hunt\n", __func__); |
1092 | reopen_session(monc); | |
ba75bb98 | 1093 | } else { |
8b9558aa YZ |
1094 | int is_auth = ceph_auth_is_authenticated(monc->auth); |
1095 | if (ceph_con_keepalive_expired(&monc->con, | |
58d81b12 | 1096 | CEPH_MONC_PING_TIMEOUT)) { |
8b9558aa YZ |
1097 | dout("monc keepalive timeout\n"); |
1098 | is_auth = 0; | |
1752b50c | 1099 | reopen_session(monc); |
8b9558aa | 1100 | } |
9bd2e6f8 | 1101 | |
8b9558aa YZ |
1102 | if (!monc->hunting) { |
1103 | ceph_con_keepalive(&monc->con); | |
1104 | __validate_auth(monc); | |
facb9f6e | 1105 | un_backoff(monc); |
8b9558aa | 1106 | } |
9bd2e6f8 | 1107 | |
220abf5a ID |
1108 | if (is_auth && |
1109 | !(monc->con.peer_features & CEPH_FEATURE_MON_STATEFUL_SUB)) { | |
82dcabad ID |
1110 | unsigned long now = jiffies; |
1111 | ||
1112 | dout("%s renew subs? now %lu renew after %lu\n", | |
1113 | __func__, now, monc->sub_renew_after); | |
1114 | if (time_after_eq(now, monc->sub_renew_after)) | |
1115 | __send_subscribe(monc); | |
1116 | } | |
ba75bb98 | 1117 | } |
ba75bb98 SW |
1118 | __schedule_delayed(monc); |
1119 | mutex_unlock(&monc->mutex); | |
1120 | } | |
1121 | ||
6b805185 SW |
1122 | /* |
1123 | * On startup, we build a temporary monmap populated with the IPs | |
1124 | * provided by mount(2). | |
1125 | */ | |
1126 | static int build_initial_monmap(struct ceph_mon_client *monc) | |
1127 | { | |
cd1a677c ID |
1128 | __le32 my_type = ceph_msgr2(monc->client) ? |
1129 | CEPH_ENTITY_ADDR_TYPE_MSGR2 : CEPH_ENTITY_ADDR_TYPE_LEGACY; | |
3d14c5d2 | 1130 | struct ceph_options *opt = monc->client->options; |
3d14c5d2 | 1131 | int num_mon = opt->num_mon; |
6b805185 SW |
1132 | int i; |
1133 | ||
1134 | /* build initial monmap */ | |
acafe7e3 | 1135 | monc->monmap = kzalloc(struct_size(monc->monmap, mon_inst, num_mon), |
6b805185 SW |
1136 | GFP_KERNEL); |
1137 | if (!monc->monmap) | |
1138 | return -ENOMEM; | |
cd1a677c | 1139 | |
6b805185 | 1140 | for (i = 0; i < num_mon; i++) { |
cd1a677c ID |
1141 | struct ceph_entity_inst *inst = &monc->monmap->mon_inst[i]; |
1142 | ||
1143 | memcpy(&inst->addr.in_addr, &opt->mon_addr[i].in_addr, | |
1144 | sizeof(inst->addr.in_addr)); | |
1145 | inst->addr.type = my_type; | |
1146 | inst->addr.nonce = 0; | |
1147 | inst->name.type = CEPH_ENTITY_TYPE_MON; | |
1148 | inst->name.num = cpu_to_le64(i); | |
6b805185 SW |
1149 | } |
1150 | monc->monmap->num_mon = num_mon; | |
6b805185 SW |
1151 | return 0; |
1152 | } | |
1153 | ||
ba75bb98 SW |
1154 | int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl) |
1155 | { | |
a341131e | 1156 | int err; |
ba75bb98 SW |
1157 | |
1158 | dout("init\n"); | |
1159 | memset(monc, 0, sizeof(*monc)); | |
1160 | monc->client = cl; | |
ba75bb98 SW |
1161 | mutex_init(&monc->mutex); |
1162 | ||
6b805185 SW |
1163 | err = build_initial_monmap(monc); |
1164 | if (err) | |
1165 | goto out; | |
1166 | ||
f6a2f5be | 1167 | /* connection */ |
4e7a5dcd | 1168 | /* authentication */ |
00498b99 ID |
1169 | monc->auth = ceph_auth_init(cl->options->name, cl->options->key, |
1170 | cl->options->con_modes); | |
49d9224c NW |
1171 | if (IS_ERR(monc->auth)) { |
1172 | err = PTR_ERR(monc->auth); | |
67130934 | 1173 | goto out_monmap; |
49d9224c | 1174 | } |
4e7a5dcd SW |
1175 | monc->auth->want_keys = |
1176 | CEPH_ENTITY_TYPE_AUTH | CEPH_ENTITY_TYPE_MON | | |
1177 | CEPH_ENTITY_TYPE_OSD | CEPH_ENTITY_TYPE_MDS; | |
1178 | ||
240ed68e | 1179 | /* msgs */ |
a79832f2 | 1180 | err = -ENOMEM; |
7c315c55 | 1181 | monc->m_subscribe_ack = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE_ACK, |
34d23762 | 1182 | sizeof(struct ceph_mon_subscribe_ack), |
5418d0a2 | 1183 | GFP_KERNEL, true); |
a79832f2 | 1184 | if (!monc->m_subscribe_ack) |
49d9224c | 1185 | goto out_auth; |
6694d6b9 | 1186 | |
5418d0a2 ID |
1187 | monc->m_subscribe = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE, 128, |
1188 | GFP_KERNEL, true); | |
240ed68e SW |
1189 | if (!monc->m_subscribe) |
1190 | goto out_subscribe_ack; | |
1191 | ||
5418d0a2 ID |
1192 | monc->m_auth_reply = ceph_msg_new(CEPH_MSG_AUTH_REPLY, 4096, |
1193 | GFP_KERNEL, true); | |
a79832f2 | 1194 | if (!monc->m_auth_reply) |
240ed68e | 1195 | goto out_subscribe; |
4e7a5dcd | 1196 | |
5418d0a2 | 1197 | monc->m_auth = ceph_msg_new(CEPH_MSG_AUTH, 4096, GFP_KERNEL, true); |
9bd2e6f8 | 1198 | monc->pending_auth = 0; |
a79832f2 | 1199 | if (!monc->m_auth) |
6694d6b9 | 1200 | goto out_auth_reply; |
ba75bb98 | 1201 | |
735a72ef SW |
1202 | ceph_con_init(&monc->con, monc, &mon_con_ops, |
1203 | &monc->client->msgr); | |
1204 | ||
ba75bb98 | 1205 | monc->cur_mon = -1; |
168b9090 ID |
1206 | monc->had_a_connection = false; |
1207 | monc->hunt_mult = 1; | |
ba75bb98 SW |
1208 | |
1209 | INIT_DELAYED_WORK(&monc->delayed_work, delayed_work); | |
f8c76f6f | 1210 | monc->generic_request_tree = RB_ROOT; |
ba75bb98 SW |
1211 | monc->last_tid = 0; |
1212 | ||
737cc81e ID |
1213 | monc->fs_cluster_id = CEPH_FS_CLUSTER_ID_NONE; |
1214 | ||
4e7a5dcd SW |
1215 | return 0; |
1216 | ||
6694d6b9 SW |
1217 | out_auth_reply: |
1218 | ceph_msg_put(monc->m_auth_reply); | |
240ed68e SW |
1219 | out_subscribe: |
1220 | ceph_msg_put(monc->m_subscribe); | |
7c315c55 SW |
1221 | out_subscribe_ack: |
1222 | ceph_msg_put(monc->m_subscribe_ack); | |
49d9224c NW |
1223 | out_auth: |
1224 | ceph_auth_destroy(monc->auth); | |
4e7a5dcd SW |
1225 | out_monmap: |
1226 | kfree(monc->monmap); | |
ba75bb98 SW |
1227 | out: |
1228 | return err; | |
1229 | } | |
3d14c5d2 | 1230 | EXPORT_SYMBOL(ceph_monc_init); |
ba75bb98 SW |
1231 | |
1232 | void ceph_monc_stop(struct ceph_mon_client *monc) | |
1233 | { | |
1234 | dout("stop\n"); | |
1235 | cancel_delayed_work_sync(&monc->delayed_work); | |
1236 | ||
1237 | mutex_lock(&monc->mutex); | |
1238 | __close_session(monc); | |
0e04dc26 | 1239 | monc->cur_mon = -1; |
ba75bb98 SW |
1240 | mutex_unlock(&monc->mutex); |
1241 | ||
f3dea7ed SW |
1242 | /* |
1243 | * flush msgr queue before we destroy ourselves to ensure that: | |
1244 | * - any work that references our embedded con is finished. | |
1245 | * - any osd_client or other work that may reference an authorizer | |
1246 | * finishes before we shut down the auth subsystem. | |
1247 | */ | |
1248 | ceph_msgr_flush(); | |
1249 | ||
4e7a5dcd SW |
1250 | ceph_auth_destroy(monc->auth); |
1251 | ||
d0b19705 ID |
1252 | WARN_ON(!RB_EMPTY_ROOT(&monc->generic_request_tree)); |
1253 | ||
4e7a5dcd | 1254 | ceph_msg_put(monc->m_auth); |
6694d6b9 | 1255 | ceph_msg_put(monc->m_auth_reply); |
240ed68e | 1256 | ceph_msg_put(monc->m_subscribe); |
7c315c55 | 1257 | ceph_msg_put(monc->m_subscribe_ack); |
ba75bb98 SW |
1258 | |
1259 | kfree(monc->monmap); | |
1260 | } | |
3d14c5d2 | 1261 | EXPORT_SYMBOL(ceph_monc_stop); |
ba75bb98 | 1262 | |
0f9af169 ID |
1263 | static void finish_hunting(struct ceph_mon_client *monc) |
1264 | { | |
1265 | if (monc->hunting) { | |
1266 | dout("%s found mon%d\n", __func__, monc->cur_mon); | |
1267 | monc->hunting = false; | |
168b9090 | 1268 | monc->had_a_connection = true; |
facb9f6e | 1269 | un_backoff(monc); |
7b4c443d | 1270 | __schedule_delayed(monc); |
0f9af169 ID |
1271 | } |
1272 | } | |
1273 | ||
8921f251 ID |
1274 | static void finish_auth(struct ceph_mon_client *monc, int auth_err, |
1275 | bool was_authed) | |
4e7a5dcd | 1276 | { |
8921f251 ID |
1277 | dout("%s auth_err %d was_authed %d\n", __func__, auth_err, was_authed); |
1278 | WARN_ON(auth_err > 0); | |
4e7a5dcd | 1279 | |
9bd2e6f8 | 1280 | monc->pending_auth = 0; |
8921f251 ID |
1281 | if (auth_err) { |
1282 | monc->client->auth_err = auth_err; | |
1283 | wake_up_all(&monc->client->auth_wq); | |
1284 | return; | |
0f9af169 ID |
1285 | } |
1286 | ||
8921f251 ID |
1287 | if (!was_authed && ceph_auth_is_authenticated(monc->auth)) { |
1288 | dout("%s authenticated, starting session global_id %llu\n", | |
1289 | __func__, monc->auth->global_id); | |
0743304d | 1290 | |
15d9882c AE |
1291 | monc->client->msgr.inst.name.type = CEPH_ENTITY_TYPE_CLIENT; |
1292 | monc->client->msgr.inst.name.num = | |
0cf5537b | 1293 | cpu_to_le64(monc->auth->global_id); |
0743304d | 1294 | |
4e7a5dcd | 1295 | __send_subscribe(monc); |
f8c76f6f | 1296 | __resend_generic_request(monc); |
0f9af169 ID |
1297 | |
1298 | pr_info("mon%d %s session established\n", monc->cur_mon, | |
b726ec97 | 1299 | ceph_pr_addr(&monc->con.peer_addr)); |
4e7a5dcd | 1300 | } |
8921f251 | 1301 | } |
0f9af169 | 1302 | |
8921f251 ID |
1303 | static void handle_auth_reply(struct ceph_mon_client *monc, |
1304 | struct ceph_msg *msg) | |
1305 | { | |
1306 | bool was_authed; | |
1307 | int ret; | |
1308 | ||
1309 | mutex_lock(&monc->mutex); | |
1310 | was_authed = ceph_auth_is_authenticated(monc->auth); | |
1311 | ret = ceph_handle_auth_reply(monc->auth, msg->front.iov_base, | |
1312 | msg->front.iov_len, | |
1313 | monc->m_auth->front.iov_base, | |
1314 | monc->m_auth->front_alloc_len); | |
1315 | if (ret > 0) { | |
1316 | __send_prepared_auth_request(monc, ret); | |
1317 | } else { | |
1318 | finish_auth(monc, ret, was_authed); | |
1319 | finish_hunting(monc); | |
1320 | } | |
4e7a5dcd SW |
1321 | mutex_unlock(&monc->mutex); |
1322 | } | |
1323 | ||
9bd2e6f8 SW |
1324 | static int __validate_auth(struct ceph_mon_client *monc) |
1325 | { | |
1326 | int ret; | |
1327 | ||
1328 | if (monc->pending_auth) | |
1329 | return 0; | |
1330 | ||
1331 | ret = ceph_build_auth(monc->auth, monc->m_auth->front.iov_base, | |
3cea4c30 | 1332 | monc->m_auth->front_alloc_len); |
9bd2e6f8 SW |
1333 | if (ret <= 0) |
1334 | return ret; /* either an error, or no need to authenticate */ | |
1335 | __send_prepared_auth_request(monc, ret); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | int ceph_monc_validate_auth(struct ceph_mon_client *monc) | |
1340 | { | |
1341 | int ret; | |
1342 | ||
1343 | mutex_lock(&monc->mutex); | |
1344 | ret = __validate_auth(monc); | |
1345 | mutex_unlock(&monc->mutex); | |
1346 | return ret; | |
1347 | } | |
3d14c5d2 | 1348 | EXPORT_SYMBOL(ceph_monc_validate_auth); |
9bd2e6f8 | 1349 | |
cd1a677c ID |
1350 | static int mon_get_auth_request(struct ceph_connection *con, |
1351 | void *buf, int *buf_len, | |
1352 | void **authorizer, int *authorizer_len) | |
1353 | { | |
1354 | struct ceph_mon_client *monc = con->private; | |
1355 | int ret; | |
1356 | ||
1357 | mutex_lock(&monc->mutex); | |
1358 | ret = ceph_auth_get_request(monc->auth, buf, *buf_len); | |
1359 | mutex_unlock(&monc->mutex); | |
1360 | if (ret < 0) | |
1361 | return ret; | |
1362 | ||
1363 | *buf_len = ret; | |
1364 | *authorizer = NULL; | |
1365 | *authorizer_len = 0; | |
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | static int mon_handle_auth_reply_more(struct ceph_connection *con, | |
1370 | void *reply, int reply_len, | |
1371 | void *buf, int *buf_len, | |
1372 | void **authorizer, int *authorizer_len) | |
1373 | { | |
1374 | struct ceph_mon_client *monc = con->private; | |
1375 | int ret; | |
1376 | ||
1377 | mutex_lock(&monc->mutex); | |
1378 | ret = ceph_auth_handle_reply_more(monc->auth, reply, reply_len, | |
1379 | buf, *buf_len); | |
1380 | mutex_unlock(&monc->mutex); | |
1381 | if (ret < 0) | |
1382 | return ret; | |
1383 | ||
1384 | *buf_len = ret; | |
1385 | *authorizer = NULL; | |
1386 | *authorizer_len = 0; | |
1387 | return 0; | |
1388 | } | |
1389 | ||
1390 | static int mon_handle_auth_done(struct ceph_connection *con, | |
1391 | u64 global_id, void *reply, int reply_len, | |
1392 | u8 *session_key, int *session_key_len, | |
1393 | u8 *con_secret, int *con_secret_len) | |
1394 | { | |
1395 | struct ceph_mon_client *monc = con->private; | |
1396 | bool was_authed; | |
1397 | int ret; | |
1398 | ||
1399 | mutex_lock(&monc->mutex); | |
1400 | WARN_ON(!monc->hunting); | |
1401 | was_authed = ceph_auth_is_authenticated(monc->auth); | |
1402 | ret = ceph_auth_handle_reply_done(monc->auth, global_id, | |
1403 | reply, reply_len, | |
1404 | session_key, session_key_len, | |
1405 | con_secret, con_secret_len); | |
1406 | finish_auth(monc, ret, was_authed); | |
1407 | if (!ret) | |
1408 | finish_hunting(monc); | |
1409 | mutex_unlock(&monc->mutex); | |
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | static int mon_handle_auth_bad_method(struct ceph_connection *con, | |
1414 | int used_proto, int result, | |
1415 | const int *allowed_protos, int proto_cnt, | |
1416 | const int *allowed_modes, int mode_cnt) | |
1417 | { | |
1418 | struct ceph_mon_client *monc = con->private; | |
1419 | bool was_authed; | |
1420 | ||
1421 | mutex_lock(&monc->mutex); | |
1422 | WARN_ON(!monc->hunting); | |
1423 | was_authed = ceph_auth_is_authenticated(monc->auth); | |
1424 | ceph_auth_handle_bad_method(monc->auth, used_proto, result, | |
1425 | allowed_protos, proto_cnt, | |
1426 | allowed_modes, mode_cnt); | |
1427 | finish_auth(monc, -EACCES, was_authed); | |
1428 | mutex_unlock(&monc->mutex); | |
1429 | return 0; | |
1430 | } | |
1431 | ||
ba75bb98 SW |
1432 | /* |
1433 | * handle incoming message | |
1434 | */ | |
4972cf60 | 1435 | static void mon_dispatch(struct ceph_connection *con, struct ceph_msg *msg) |
ba75bb98 SW |
1436 | { |
1437 | struct ceph_mon_client *monc = con->private; | |
1438 | int type = le16_to_cpu(msg->hdr.type); | |
1439 | ||
ba75bb98 | 1440 | switch (type) { |
4e7a5dcd SW |
1441 | case CEPH_MSG_AUTH_REPLY: |
1442 | handle_auth_reply(monc, msg); | |
ba75bb98 SW |
1443 | break; |
1444 | ||
1445 | case CEPH_MSG_MON_SUBSCRIBE_ACK: | |
1446 | handle_subscribe_ack(monc, msg); | |
1447 | break; | |
1448 | ||
1449 | case CEPH_MSG_STATFS_REPLY: | |
1450 | handle_statfs_reply(monc, msg); | |
1451 | break; | |
1452 | ||
513a8243 ID |
1453 | case CEPH_MSG_MON_GET_VERSION_REPLY: |
1454 | handle_get_version_reply(monc, msg); | |
1455 | break; | |
1456 | ||
6305a3b4 DF |
1457 | case CEPH_MSG_MON_COMMAND_ACK: |
1458 | handle_command_ack(monc, msg); | |
1459 | break; | |
1460 | ||
4e7a5dcd SW |
1461 | case CEPH_MSG_MON_MAP: |
1462 | ceph_monc_handle_map(monc, msg); | |
1463 | break; | |
1464 | ||
ba75bb98 SW |
1465 | case CEPH_MSG_OSD_MAP: |
1466 | ceph_osdc_handle_map(&monc->client->osdc, msg); | |
1467 | break; | |
1468 | ||
1469 | default: | |
3d14c5d2 YS |
1470 | /* can the chained handler handle it? */ |
1471 | if (monc->client->extra_mon_dispatch && | |
1472 | monc->client->extra_mon_dispatch(monc->client, msg) == 0) | |
1473 | break; | |
24e1dd6a | 1474 | |
ba75bb98 SW |
1475 | pr_err("received unknown message type %d %s\n", type, |
1476 | ceph_msg_type_name(type)); | |
1477 | } | |
1478 | ceph_msg_put(msg); | |
1479 | } | |
1480 | ||
1481 | /* | |
1482 | * Allocate memory for incoming message | |
1483 | */ | |
1484 | static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con, | |
2450418c YS |
1485 | struct ceph_msg_header *hdr, |
1486 | int *skip) | |
ba75bb98 SW |
1487 | { |
1488 | struct ceph_mon_client *monc = con->private; | |
1489 | int type = le16_to_cpu(hdr->type); | |
2450418c | 1490 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 1491 | struct ceph_msg *m = NULL; |
ba75bb98 | 1492 | |
2450418c | 1493 | *skip = 0; |
0547a9b3 | 1494 | |
ba75bb98 | 1495 | switch (type) { |
ba75bb98 | 1496 | case CEPH_MSG_MON_SUBSCRIBE_ACK: |
7c315c55 | 1497 | m = ceph_msg_get(monc->m_subscribe_ack); |
2450418c | 1498 | break; |
ba75bb98 | 1499 | case CEPH_MSG_STATFS_REPLY: |
6305a3b4 | 1500 | case CEPH_MSG_MON_COMMAND_ACK: |
f8c76f6f | 1501 | return get_generic_reply(con, hdr, skip); |
4e7a5dcd | 1502 | case CEPH_MSG_AUTH_REPLY: |
6694d6b9 | 1503 | m = ceph_msg_get(monc->m_auth_reply); |
2450418c | 1504 | break; |
513a8243 ID |
1505 | case CEPH_MSG_MON_GET_VERSION_REPLY: |
1506 | if (le64_to_cpu(hdr->tid) != 0) | |
1507 | return get_generic_reply(con, hdr, skip); | |
1508 | ||
1509 | /* | |
dd0d91b9 | 1510 | * Older OSDs don't set reply tid even if the original |
18370b36 GS |
1511 | * request had a non-zero tid. Work around this weirdness |
1512 | * by allocating a new message. | |
513a8243 | 1513 | */ |
df561f66 | 1514 | fallthrough; |
5b3a4db3 SW |
1515 | case CEPH_MSG_MON_MAP: |
1516 | case CEPH_MSG_MDS_MAP: | |
1517 | case CEPH_MSG_OSD_MAP: | |
0cabbd94 | 1518 | case CEPH_MSG_FS_MAP_USER: |
b61c2763 | 1519 | m = ceph_msg_new(type, front_len, GFP_NOFS, false); |
1c20f2d2 AE |
1520 | if (!m) |
1521 | return NULL; /* ENOMEM--return skip == 0 */ | |
5b3a4db3 | 1522 | break; |
ba75bb98 | 1523 | } |
2450418c | 1524 | |
5b3a4db3 SW |
1525 | if (!m) { |
1526 | pr_info("alloc_msg unknown type %d\n", type); | |
2450418c | 1527 | *skip = 1; |
73c3d481 | 1528 | } else if (front_len > m->front_alloc_len) { |
b9a67899 JP |
1529 | pr_warn("mon_alloc_msg front %d > prealloc %d (%u#%llu)\n", |
1530 | front_len, m->front_alloc_len, | |
1531 | (unsigned int)con->peer_name.type, | |
1532 | le64_to_cpu(con->peer_name.num)); | |
73c3d481 SW |
1533 | ceph_msg_put(m); |
1534 | m = ceph_msg_new(type, front_len, GFP_NOFS, false); | |
5b3a4db3 | 1535 | } |
73c3d481 | 1536 | |
2450418c | 1537 | return m; |
ba75bb98 SW |
1538 | } |
1539 | ||
1540 | /* | |
1541 | * If the monitor connection resets, pick a new monitor and resubmit | |
1542 | * any pending requests. | |
1543 | */ | |
1544 | static void mon_fault(struct ceph_connection *con) | |
1545 | { | |
1546 | struct ceph_mon_client *monc = con->private; | |
1547 | ||
ba75bb98 | 1548 | mutex_lock(&monc->mutex); |
b5d91704 ID |
1549 | dout("%s mon%d\n", __func__, monc->cur_mon); |
1550 | if (monc->cur_mon >= 0) { | |
1551 | if (!monc->hunting) { | |
1552 | dout("%s hunting for new mon\n", __func__); | |
1553 | reopen_session(monc); | |
1554 | __schedule_delayed(monc); | |
1555 | } else { | |
1556 | dout("%s already hunting\n", __func__); | |
1557 | } | |
ba75bb98 | 1558 | } |
ba75bb98 SW |
1559 | mutex_unlock(&monc->mutex); |
1560 | } | |
1561 | ||
ec87ef43 SW |
1562 | /* |
1563 | * We can ignore refcounting on the connection struct, as all references | |
1564 | * will come from the messenger workqueue, which is drained prior to | |
1565 | * mon_client destruction. | |
1566 | */ | |
4972cf60 | 1567 | static struct ceph_connection *mon_get_con(struct ceph_connection *con) |
ec87ef43 SW |
1568 | { |
1569 | return con; | |
1570 | } | |
1571 | ||
4972cf60 | 1572 | static void mon_put_con(struct ceph_connection *con) |
ec87ef43 SW |
1573 | { |
1574 | } | |
1575 | ||
9e32789f | 1576 | static const struct ceph_connection_operations mon_con_ops = { |
4972cf60 ID |
1577 | .get = mon_get_con, |
1578 | .put = mon_put_con, | |
ba75bb98 | 1579 | .alloc_msg = mon_alloc_msg, |
4972cf60 ID |
1580 | .dispatch = mon_dispatch, |
1581 | .fault = mon_fault, | |
cd1a677c ID |
1582 | .get_auth_request = mon_get_auth_request, |
1583 | .handle_auth_reply_more = mon_handle_auth_reply_more, | |
1584 | .handle_auth_done = mon_handle_auth_done, | |
1585 | .handle_auth_bad_method = mon_handle_auth_bad_method, | |
ba75bb98 | 1586 | }; |