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11fdf7f2 TL |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include <type_traits> | |
5 | ||
6 | #include "ProtocolV2.h" | |
7 | #include "AsyncMessenger.h" | |
8 | ||
9 | #include "common/EventTrace.h" | |
10 | #include "common/ceph_crypto.h" | |
11 | #include "common/errno.h" | |
12 | #include "include/random.h" | |
13 | #include "auth/AuthClient.h" | |
14 | #include "auth/AuthServer.h" | |
15 | ||
16 | #define dout_subsys ceph_subsys_ms | |
17 | #undef dout_prefix | |
18 | #define dout_prefix _conn_prefix(_dout) | |
f67539c2 | 19 | std::ostream &ProtocolV2::_conn_prefix(std::ostream *_dout) { |
11fdf7f2 TL |
20 | return *_dout << "--2- " << messenger->get_myaddrs() << " >> " |
21 | << *connection->peer_addrs << " conn(" << connection << " " | |
22 | << this | |
23 | << " " << ceph_con_mode_name(auth_meta->con_mode) | |
24 | << " :" << connection->port | |
25 | << " s=" << get_state_name(state) << " pgs=" << peer_global_seq | |
26 | << " cs=" << connect_seq << " l=" << connection->policy.lossy | |
f6b5b4d7 TL |
27 | << " rev1=" << HAVE_MSGR2_FEATURE(peer_supported_features, |
28 | REVISION_1) | |
11fdf7f2 TL |
29 | << " rx=" << session_stream_handlers.rx.get() |
30 | << " tx=" << session_stream_handlers.tx.get() | |
31 | << ")."; | |
32 | } | |
33 | ||
34 | using namespace ceph::msgr::v2; | |
35 | ||
36 | using CtPtr = Ct<ProtocolV2> *; | |
37 | using CtRef = Ct<ProtocolV2> &; | |
38 | ||
39 | void ProtocolV2::run_continuation(CtPtr pcontinuation) { | |
40 | if (pcontinuation) { | |
41 | run_continuation(*pcontinuation); | |
42 | } | |
43 | } | |
44 | ||
45 | void ProtocolV2::run_continuation(CtRef continuation) { | |
46 | try { | |
47 | CONTINUATION_RUN(continuation) | |
f67539c2 TL |
48 | } catch (const ceph::buffer::error &e) { |
49 | lderr(cct) << __func__ << " failed decoding of frame header: " << e.what() | |
11fdf7f2 TL |
50 | << dendl; |
51 | _fault(); | |
52 | } catch (const ceph::crypto::onwire::MsgAuthError &e) { | |
53 | lderr(cct) << __func__ << " " << e.what() << dendl; | |
54 | _fault(); | |
55 | } catch (const DecryptionError &) { | |
56 | lderr(cct) << __func__ << " failed to decrypt frame payload" << dendl; | |
57 | } | |
58 | } | |
59 | ||
60 | #define WRITE(B, D, C) write(D, CONTINUATION(C), B) | |
61 | ||
f67539c2 | 62 | #define READ(L, C) read(CONTINUATION(C), ceph::buffer::ptr_node::create(ceph::buffer::create(L))) |
11fdf7f2 TL |
63 | |
64 | #define READ_RXBUF(B, C) read(CONTINUATION(C), B) | |
65 | ||
66 | #ifdef UNIT_TESTS_BUILT | |
67 | ||
68 | #define INTERCEPT(S) { \ | |
69 | if(connection->interceptor) { \ | |
70 | auto a = connection->interceptor->intercept(connection, (S)); \ | |
71 | if (a == Interceptor::ACTION::FAIL) { \ | |
72 | return _fault(); \ | |
73 | } else if (a == Interceptor::ACTION::STOP) { \ | |
74 | stop(); \ | |
75 | connection->dispatch_queue->queue_reset(connection); \ | |
76 | return nullptr; \ | |
77 | }}} | |
78 | ||
79 | #else | |
80 | #define INTERCEPT(S) | |
81 | #endif | |
82 | ||
83 | ProtocolV2::ProtocolV2(AsyncConnection *connection) | |
84 | : Protocol(2, connection), | |
85 | state(NONE), | |
f6b5b4d7 | 86 | peer_supported_features(0), |
11fdf7f2 TL |
87 | client_cookie(0), |
88 | server_cookie(0), | |
89 | global_seq(0), | |
90 | connect_seq(0), | |
91 | peer_global_seq(0), | |
92 | message_seq(0), | |
93 | reconnecting(false), | |
94 | replacing(false), | |
95 | can_write(false), | |
96 | bannerExchangeCallback(nullptr), | |
f6b5b4d7 TL |
97 | tx_frame_asm(&session_stream_handlers, false), |
98 | rx_frame_asm(&session_stream_handlers, false), | |
11fdf7f2 TL |
99 | next_tag(static_cast<Tag>(0)), |
100 | keepalive(false) { | |
101 | } | |
102 | ||
103 | ProtocolV2::~ProtocolV2() { | |
104 | } | |
105 | ||
106 | void ProtocolV2::connect() { | |
107 | ldout(cct, 1) << __func__ << dendl; | |
108 | state = START_CONNECT; | |
109 | pre_auth.enabled = true; | |
110 | } | |
111 | ||
112 | void ProtocolV2::accept() { | |
113 | ldout(cct, 1) << __func__ << dendl; | |
114 | state = START_ACCEPT; | |
115 | } | |
116 | ||
117 | bool ProtocolV2::is_connected() { return can_write; } | |
118 | ||
119 | /* | |
120 | * Tears down the message queues, and removes them from the | |
121 | * DispatchQueue Must hold write_lock prior to calling. | |
122 | */ | |
123 | void ProtocolV2::discard_out_queue() { | |
124 | ldout(cct, 10) << __func__ << " started" << dendl; | |
125 | ||
f67539c2 | 126 | for (auto p = sent.begin(); p != sent.end(); ++p) { |
11fdf7f2 TL |
127 | ldout(cct, 20) << __func__ << " discard " << *p << dendl; |
128 | (*p)->put(); | |
129 | } | |
130 | sent.clear(); | |
131 | for (auto& [ prio, entries ] : out_queue) { | |
132 | static_cast<void>(prio); | |
133 | for (auto& entry : entries) { | |
134 | ldout(cct, 20) << __func__ << " discard " << *entry.m << dendl; | |
135 | entry.m->put(); | |
136 | } | |
137 | } | |
138 | out_queue.clear(); | |
494da23a | 139 | write_in_progress = false; |
11fdf7f2 TL |
140 | } |
141 | ||
142 | void ProtocolV2::reset_session() { | |
143 | ldout(cct, 1) << __func__ << dendl; | |
144 | ||
145 | std::lock_guard<std::mutex> l(connection->write_lock); | |
146 | if (connection->delay_state) { | |
147 | connection->delay_state->discard(); | |
148 | } | |
149 | ||
150 | connection->dispatch_queue->discard_queue(connection->conn_id); | |
151 | discard_out_queue(); | |
9f95a23c | 152 | connection->outgoing_bl.clear(); |
11fdf7f2 TL |
153 | |
154 | connection->dispatch_queue->queue_remote_reset(connection); | |
155 | ||
156 | out_seq = 0; | |
157 | in_seq = 0; | |
158 | client_cookie = 0; | |
159 | server_cookie = 0; | |
160 | connect_seq = 0; | |
161 | peer_global_seq = 0; | |
162 | message_seq = 0; | |
163 | ack_left = 0; | |
164 | can_write = false; | |
165 | } | |
166 | ||
167 | void ProtocolV2::stop() { | |
168 | ldout(cct, 1) << __func__ << dendl; | |
169 | if (state == CLOSED) { | |
170 | return; | |
171 | } | |
172 | ||
173 | if (connection->delay_state) connection->delay_state->flush(); | |
174 | ||
175 | std::lock_guard<std::mutex> l(connection->write_lock); | |
176 | ||
177 | reset_recv_state(); | |
178 | discard_out_queue(); | |
179 | ||
180 | connection->_stop(); | |
181 | ||
182 | can_write = false; | |
183 | state = CLOSED; | |
184 | } | |
185 | ||
186 | void ProtocolV2::fault() { _fault(); } | |
187 | ||
188 | void ProtocolV2::requeue_sent() { | |
494da23a | 189 | write_in_progress = false; |
11fdf7f2 TL |
190 | if (sent.empty()) { |
191 | return; | |
192 | } | |
193 | ||
194 | auto& rq = out_queue[CEPH_MSG_PRIO_HIGHEST]; | |
195 | out_seq -= sent.size(); | |
196 | while (!sent.empty()) { | |
197 | Message *m = sent.back(); | |
198 | sent.pop_back(); | |
199 | ldout(cct, 5) << __func__ << " requeueing message m=" << m | |
200 | << " seq=" << m->get_seq() << " type=" << m->get_type() << " " | |
201 | << *m << dendl; | |
9f95a23c | 202 | m->clear_payload(); |
11fdf7f2 TL |
203 | rq.emplace_front(out_queue_entry_t{false, m}); |
204 | } | |
205 | } | |
206 | ||
207 | uint64_t ProtocolV2::discard_requeued_up_to(uint64_t out_seq, uint64_t seq) { | |
208 | ldout(cct, 10) << __func__ << " " << seq << dendl; | |
209 | std::lock_guard<std::mutex> l(connection->write_lock); | |
210 | if (out_queue.count(CEPH_MSG_PRIO_HIGHEST) == 0) { | |
211 | return seq; | |
212 | } | |
213 | auto& rq = out_queue[CEPH_MSG_PRIO_HIGHEST]; | |
214 | uint64_t count = out_seq; | |
215 | while (!rq.empty()) { | |
216 | Message* const m = rq.front().m; | |
217 | if (m->get_seq() == 0 || m->get_seq() > seq) break; | |
218 | ldout(cct, 5) << __func__ << " discarding message m=" << m | |
219 | << " seq=" << m->get_seq() << " ack_seq=" << seq << " " | |
220 | << *m << dendl; | |
221 | m->put(); | |
222 | rq.pop_front(); | |
223 | count++; | |
224 | } | |
225 | if (rq.empty()) out_queue.erase(CEPH_MSG_PRIO_HIGHEST); | |
226 | return count; | |
227 | } | |
228 | ||
9f95a23c TL |
229 | void ProtocolV2::reset_security() { |
230 | ldout(cct, 5) << __func__ << dendl; | |
231 | ||
494da23a | 232 | auth_meta.reset(new AuthConnectionMeta); |
494da23a | 233 | session_stream_handlers.rx.reset(nullptr); |
9f95a23c | 234 | session_stream_handlers.tx.reset(nullptr); |
494da23a | 235 | pre_auth.rxbuf.clear(); |
9f95a23c TL |
236 | pre_auth.txbuf.clear(); |
237 | } | |
238 | ||
239 | // it's expected the `write_lock` is held while calling this method. | |
240 | void ProtocolV2::reset_recv_state() { | |
241 | ldout(cct, 5) << __func__ << dendl; | |
242 | ||
243 | if (!connection->center->in_thread()) { | |
244 | // execute in the same thread that uses the rx/tx handlers. We need | |
245 | // to do the warp because holding `write_lock` is not enough as | |
246 | // `write_event()` unlocks it just before calling `write_message()`. | |
247 | // `submit_to()` here is NOT blocking. | |
248 | connection->center->submit_to(connection->center->get_id(), [this] { | |
249 | ldout(cct, 5) << "reset_recv_state (warped) reseting crypto handlers" | |
250 | << dendl; | |
251 | // Possibly unnecessary. See the comment in `deactivate_existing`. | |
252 | std::lock_guard<std::mutex> l(connection->lock); | |
253 | std::lock_guard<std::mutex> wl(connection->write_lock); | |
254 | reset_security(); | |
255 | }, /* always_async = */true); | |
256 | } else { | |
257 | reset_security(); | |
258 | } | |
11fdf7f2 TL |
259 | |
260 | // clean read and write callbacks | |
261 | connection->pendingReadLen.reset(); | |
262 | connection->writeCallback.reset(); | |
263 | ||
264 | next_tag = static_cast<Tag>(0); | |
265 | ||
266 | reset_throttle(); | |
267 | } | |
268 | ||
269 | size_t ProtocolV2::get_current_msg_size() const { | |
f6b5b4d7 | 270 | ceph_assert(rx_frame_asm.get_num_segments() > 0); |
11fdf7f2 TL |
271 | size_t sum = 0; |
272 | // we don't include SegmentIndex::Msg::HEADER. | |
f6b5b4d7 TL |
273 | for (size_t i = 1; i < rx_frame_asm.get_num_segments(); i++) { |
274 | sum += rx_frame_asm.get_segment_logical_len(i); | |
11fdf7f2 TL |
275 | } |
276 | return sum; | |
277 | } | |
278 | ||
279 | void ProtocolV2::reset_throttle() { | |
280 | if (state > THROTTLE_MESSAGE && state <= THROTTLE_DONE && | |
281 | connection->policy.throttler_messages) { | |
282 | ldout(cct, 10) << __func__ << " releasing " << 1 | |
283 | << " message to policy throttler " | |
284 | << connection->policy.throttler_messages->get_current() | |
285 | << "/" << connection->policy.throttler_messages->get_max() | |
286 | << dendl; | |
287 | connection->policy.throttler_messages->put(); | |
288 | } | |
289 | if (state > THROTTLE_BYTES && state <= THROTTLE_DONE) { | |
290 | if (connection->policy.throttler_bytes) { | |
291 | const size_t cur_msg_size = get_current_msg_size(); | |
292 | ldout(cct, 10) << __func__ << " releasing " << cur_msg_size | |
293 | << " bytes to policy throttler " | |
294 | << connection->policy.throttler_bytes->get_current() << "/" | |
295 | << connection->policy.throttler_bytes->get_max() << dendl; | |
296 | connection->policy.throttler_bytes->put(cur_msg_size); | |
297 | } | |
298 | } | |
299 | if (state > THROTTLE_DISPATCH_QUEUE && state <= THROTTLE_DONE) { | |
300 | const size_t cur_msg_size = get_current_msg_size(); | |
301 | ldout(cct, 10) | |
302 | << __func__ << " releasing " << cur_msg_size | |
303 | << " bytes to dispatch_queue throttler " | |
304 | << connection->dispatch_queue->dispatch_throttler.get_current() << "/" | |
305 | << connection->dispatch_queue->dispatch_throttler.get_max() << dendl; | |
306 | connection->dispatch_queue->dispatch_throttle_release(cur_msg_size); | |
307 | } | |
308 | } | |
309 | ||
310 | CtPtr ProtocolV2::_fault() { | |
311 | ldout(cct, 10) << __func__ << dendl; | |
312 | ||
313 | if (state == CLOSED || state == NONE) { | |
314 | ldout(cct, 10) << __func__ << " connection is already closed" << dendl; | |
315 | return nullptr; | |
316 | } | |
317 | ||
318 | if (connection->policy.lossy && | |
319 | !(state >= START_CONNECT && state <= SESSION_RECONNECTING)) { | |
320 | ldout(cct, 2) << __func__ << " on lossy channel, failing" << dendl; | |
321 | stop(); | |
322 | connection->dispatch_queue->queue_reset(connection); | |
323 | return nullptr; | |
324 | } | |
325 | ||
326 | connection->write_lock.lock(); | |
327 | ||
328 | can_write = false; | |
329 | // requeue sent items | |
330 | requeue_sent(); | |
331 | ||
332 | if (out_queue.empty() && state >= START_ACCEPT && | |
333 | state <= SESSION_ACCEPTING && !replacing) { | |
334 | ldout(cct, 2) << __func__ << " with nothing to send and in the half " | |
335 | << " accept state just closed" << dendl; | |
336 | connection->write_lock.unlock(); | |
337 | stop(); | |
338 | connection->dispatch_queue->queue_reset(connection); | |
339 | return nullptr; | |
340 | } | |
341 | ||
342 | replacing = false; | |
343 | connection->fault(); | |
344 | reset_recv_state(); | |
345 | ||
346 | reconnecting = false; | |
347 | ||
348 | if (connection->policy.standby && out_queue.empty() && !keepalive && | |
349 | state != WAIT) { | |
350 | ldout(cct, 1) << __func__ << " with nothing to send, going to standby" | |
351 | << dendl; | |
352 | state = STANDBY; | |
353 | connection->write_lock.unlock(); | |
354 | return nullptr; | |
355 | } | |
356 | if (connection->policy.server) { | |
357 | ldout(cct, 1) << __func__ << " server, going to standby, even though i have stuff queued" << dendl; | |
358 | state = STANDBY; | |
359 | connection->write_lock.unlock(); | |
360 | return nullptr; | |
361 | } | |
362 | ||
363 | connection->write_lock.unlock(); | |
364 | ||
365 | if (!(state >= START_CONNECT && state <= SESSION_RECONNECTING) && | |
366 | state != WAIT && | |
367 | state != SESSION_ACCEPTING /* due to connection race */) { | |
368 | // policy maybe empty when state is in accept | |
369 | if (connection->policy.server) { | |
370 | ldout(cct, 1) << __func__ << " server, going to standby" << dendl; | |
371 | state = STANDBY; | |
372 | } else { | |
373 | ldout(cct, 1) << __func__ << " initiating reconnect" << dendl; | |
374 | connect_seq++; | |
375 | global_seq = messenger->get_global_seq(); | |
376 | state = START_CONNECT; | |
377 | pre_auth.enabled = true; | |
378 | connection->state = AsyncConnection::STATE_CONNECTING; | |
379 | } | |
380 | backoff = utime_t(); | |
381 | connection->center->dispatch_event_external(connection->read_handler); | |
382 | } else { | |
383 | if (state == WAIT) { | |
384 | backoff.set_from_double(cct->_conf->ms_max_backoff); | |
385 | } else if (backoff == utime_t()) { | |
386 | backoff.set_from_double(cct->_conf->ms_initial_backoff); | |
387 | } else { | |
388 | backoff += backoff; | |
389 | if (backoff > cct->_conf->ms_max_backoff) | |
390 | backoff.set_from_double(cct->_conf->ms_max_backoff); | |
391 | } | |
392 | ||
393 | if (server_cookie) { | |
394 | connect_seq++; | |
395 | } | |
396 | ||
397 | global_seq = messenger->get_global_seq(); | |
398 | state = START_CONNECT; | |
399 | pre_auth.enabled = true; | |
400 | connection->state = AsyncConnection::STATE_CONNECTING; | |
401 | ldout(cct, 1) << __func__ << " waiting " << backoff << dendl; | |
402 | // woke up again; | |
403 | connection->register_time_events.insert( | |
404 | connection->center->create_time_event(backoff.to_nsec() / 1000, | |
405 | connection->wakeup_handler)); | |
406 | } | |
407 | return nullptr; | |
408 | } | |
409 | ||
410 | void ProtocolV2::prepare_send_message(uint64_t features, | |
411 | Message *m) { | |
412 | ldout(cct, 20) << __func__ << " m=" << *m << dendl; | |
413 | ||
414 | // associate message with Connection (for benefit of encode_payload) | |
9f95a23c TL |
415 | ldout(cct, 20) << __func__ << (m->empty_payload() ? " encoding features " : " half-reencoding features ") |
416 | << features << " " << m << " " << *m << dendl; | |
11fdf7f2 TL |
417 | |
418 | // encode and copy out of *m | |
419 | m->encode(features, 0); | |
420 | } | |
421 | ||
422 | void ProtocolV2::send_message(Message *m) { | |
423 | uint64_t f = connection->get_features(); | |
424 | ||
425 | // TODO: Currently not all messages supports reencode like MOSDMap, so here | |
426 | // only let fast dispatch support messages prepare message | |
427 | const bool can_fast_prepare = messenger->ms_can_fast_dispatch(m); | |
428 | if (can_fast_prepare) { | |
429 | prepare_send_message(f, m); | |
430 | } | |
431 | ||
432 | std::lock_guard<std::mutex> l(connection->write_lock); | |
433 | bool is_prepared = can_fast_prepare; | |
434 | // "features" changes will change the payload encoding | |
435 | if (can_fast_prepare && (!can_write || connection->get_features() != f)) { | |
436 | // ensure the correctness of message encoding | |
437 | m->clear_payload(); | |
438 | is_prepared = false; | |
439 | ldout(cct, 10) << __func__ << " clear encoded buffer previous " << f | |
440 | << " != " << connection->get_features() << dendl; | |
441 | } | |
442 | if (state == CLOSED) { | |
443 | ldout(cct, 10) << __func__ << " connection closed." | |
444 | << " Drop message " << m << dendl; | |
445 | m->put(); | |
446 | } else { | |
447 | ldout(cct, 5) << __func__ << " enqueueing message m=" << m | |
448 | << " type=" << m->get_type() << " " << *m << dendl; | |
9f95a23c | 449 | m->queue_start = ceph::mono_clock::now(); |
11fdf7f2 TL |
450 | m->trace.event("async enqueueing message"); |
451 | out_queue[m->get_priority()].emplace_back( | |
452 | out_queue_entry_t{is_prepared, m}); | |
453 | ldout(cct, 15) << __func__ << " inline write is denied, reschedule m=" << m | |
454 | << dendl; | |
494da23a TL |
455 | if (((!replacing && can_write) || state == STANDBY) && !write_in_progress) { |
456 | write_in_progress = true; | |
11fdf7f2 TL |
457 | connection->center->dispatch_event_external(connection->write_handler); |
458 | } | |
459 | } | |
460 | } | |
461 | ||
462 | void ProtocolV2::send_keepalive() { | |
463 | ldout(cct, 10) << __func__ << dendl; | |
464 | std::lock_guard<std::mutex> l(connection->write_lock); | |
465 | if (state != CLOSED) { | |
466 | keepalive = true; | |
467 | connection->center->dispatch_event_external(connection->write_handler); | |
468 | } | |
469 | } | |
470 | ||
471 | void ProtocolV2::read_event() { | |
472 | ldout(cct, 20) << __func__ << dendl; | |
473 | ||
474 | switch (state) { | |
475 | case START_CONNECT: | |
476 | run_continuation(CONTINUATION(start_client_banner_exchange)); | |
477 | break; | |
478 | case START_ACCEPT: | |
479 | run_continuation(CONTINUATION(start_server_banner_exchange)); | |
480 | break; | |
481 | case READY: | |
482 | run_continuation(CONTINUATION(read_frame)); | |
483 | break; | |
484 | case THROTTLE_MESSAGE: | |
485 | run_continuation(CONTINUATION(throttle_message)); | |
486 | break; | |
487 | case THROTTLE_BYTES: | |
488 | run_continuation(CONTINUATION(throttle_bytes)); | |
489 | break; | |
490 | case THROTTLE_DISPATCH_QUEUE: | |
491 | run_continuation(CONTINUATION(throttle_dispatch_queue)); | |
492 | break; | |
493 | default: | |
494 | break; | |
495 | } | |
496 | } | |
497 | ||
498 | ProtocolV2::out_queue_entry_t ProtocolV2::_get_next_outgoing() { | |
499 | out_queue_entry_t out_entry; | |
500 | ||
501 | if (!out_queue.empty()) { | |
502 | auto it = out_queue.rbegin(); | |
503 | auto& entries = it->second; | |
504 | ceph_assert(!entries.empty()); | |
505 | out_entry = entries.front(); | |
506 | entries.pop_front(); | |
507 | if (entries.empty()) { | |
508 | out_queue.erase(it->first); | |
509 | } | |
510 | } | |
511 | return out_entry; | |
512 | } | |
513 | ||
514 | ssize_t ProtocolV2::write_message(Message *m, bool more) { | |
515 | FUNCTRACE(cct); | |
516 | ceph_assert(connection->center->in_thread()); | |
517 | m->set_seq(++out_seq); | |
518 | ||
519 | connection->lock.lock(); | |
520 | uint64_t ack_seq = in_seq; | |
521 | ack_left = 0; | |
522 | connection->lock.unlock(); | |
523 | ||
524 | ceph_msg_header &header = m->get_header(); | |
525 | ceph_msg_footer &footer = m->get_footer(); | |
526 | ||
527 | ceph_msg_header2 header2{header.seq, header.tid, | |
528 | header.type, header.priority, | |
529 | header.version, | |
eafe8130 TL |
530 | init_le32(0), header.data_off, |
531 | init_le64(ack_seq), | |
11fdf7f2 TL |
532 | footer.flags, header.compat_version, |
533 | header.reserved}; | |
534 | ||
535 | auto message = MessageFrame::Encode( | |
536 | header2, | |
537 | m->get_payload(), | |
538 | m->get_middle(), | |
539 | m->get_data()); | |
801d1391 TL |
540 | if (!append_frame(message)) { |
541 | m->put(); | |
542 | return -EILSEQ; | |
543 | } | |
11fdf7f2 TL |
544 | |
545 | ldout(cct, 5) << __func__ << " sending message m=" << m | |
546 | << " seq=" << m->get_seq() << " " << *m << dendl; | |
547 | ||
548 | m->trace.event("async writing message"); | |
549 | ldout(cct, 20) << __func__ << " sending m=" << m << " seq=" << m->get_seq() | |
550 | << " src=" << entity_name_t(messenger->get_myname()) | |
551 | << " off=" << header2.data_off | |
552 | << dendl; | |
9f95a23c | 553 | ssize_t total_send_size = connection->outgoing_bl.length(); |
11fdf7f2 TL |
554 | ssize_t rc = connection->_try_send(more); |
555 | if (rc < 0) { | |
556 | ldout(cct, 1) << __func__ << " error sending " << m << ", " | |
557 | << cpp_strerror(rc) << dendl; | |
558 | } else { | |
559 | connection->logger->inc( | |
9f95a23c | 560 | l_msgr_send_bytes, total_send_size - connection->outgoing_bl.length()); |
11fdf7f2 TL |
561 | ldout(cct, 10) << __func__ << " sending " << m |
562 | << (rc ? " continuely." : " done.") << dendl; | |
563 | } | |
9f95a23c TL |
564 | |
565 | #if defined(WITH_EVENTTRACE) | |
11fdf7f2 TL |
566 | if (m->get_type() == CEPH_MSG_OSD_OP) |
567 | OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OP_END", false); | |
568 | else if (m->get_type() == CEPH_MSG_OSD_OPREPLY) | |
569 | OID_EVENT_TRACE_WITH_MSG(m, "SEND_MSG_OSD_OPREPLY_END", false); | |
9f95a23c | 570 | #endif |
11fdf7f2 TL |
571 | m->put(); |
572 | ||
573 | return rc; | |
574 | } | |
575 | ||
801d1391 TL |
576 | template <class F> |
577 | bool ProtocolV2::append_frame(F& frame) { | |
578 | ceph::bufferlist bl; | |
579 | try { | |
f6b5b4d7 | 580 | bl = frame.get_buffer(tx_frame_asm); |
801d1391 TL |
581 | } catch (ceph::crypto::onwire::TxHandlerError &e) { |
582 | ldout(cct, 1) << __func__ << " " << e.what() << dendl; | |
583 | return false; | |
584 | } | |
f6b5b4d7 TL |
585 | |
586 | ldout(cct, 25) << __func__ << " assembled frame " << bl.length() | |
587 | << " bytes " << tx_frame_asm << dendl; | |
801d1391 TL |
588 | connection->outgoing_bl.append(bl); |
589 | return true; | |
11fdf7f2 TL |
590 | } |
591 | ||
592 | void ProtocolV2::handle_message_ack(uint64_t seq) { | |
593 | if (connection->policy.lossy) { // lossy connections don't keep sent messages | |
594 | return; | |
595 | } | |
596 | ||
597 | ldout(cct, 15) << __func__ << " seq=" << seq << dendl; | |
598 | ||
599 | // trim sent list | |
600 | static const int max_pending = 128; | |
601 | int i = 0; | |
602 | Message *pending[max_pending]; | |
9f95a23c | 603 | auto now = ceph::mono_clock::now(); |
11fdf7f2 TL |
604 | connection->write_lock.lock(); |
605 | while (!sent.empty() && sent.front()->get_seq() <= seq && i < max_pending) { | |
606 | Message *m = sent.front(); | |
607 | sent.pop_front(); | |
608 | pending[i++] = m; | |
609 | ldout(cct, 10) << __func__ << " got ack seq " << seq | |
610 | << " >= " << m->get_seq() << " on " << m << " " << *m | |
611 | << dendl; | |
612 | } | |
613 | connection->write_lock.unlock(); | |
9f95a23c | 614 | connection->logger->tinc(l_msgr_handle_ack_lat, ceph::mono_clock::now() - now); |
11fdf7f2 TL |
615 | for (int k = 0; k < i; k++) { |
616 | pending[k]->put(); | |
617 | } | |
618 | } | |
619 | ||
620 | void ProtocolV2::write_event() { | |
621 | ldout(cct, 10) << __func__ << dendl; | |
622 | ssize_t r = 0; | |
623 | ||
624 | connection->write_lock.lock(); | |
625 | if (can_write) { | |
626 | if (keepalive) { | |
801d1391 TL |
627 | ldout(cct, 10) << __func__ << " appending keepalive" << dendl; |
628 | auto keepalive_frame = KeepAliveFrame::Encode(); | |
629 | if (!append_frame(keepalive_frame)) { | |
630 | connection->write_lock.unlock(); | |
631 | connection->lock.lock(); | |
632 | fault(); | |
633 | connection->lock.unlock(); | |
634 | return; | |
635 | } | |
11fdf7f2 TL |
636 | keepalive = false; |
637 | } | |
638 | ||
639 | auto start = ceph::mono_clock::now(); | |
640 | bool more; | |
641 | do { | |
642 | const auto out_entry = _get_next_outgoing(); | |
643 | if (!out_entry.m) { | |
644 | break; | |
645 | } | |
646 | ||
647 | if (!connection->policy.lossy) { | |
648 | // put on sent list | |
649 | sent.push_back(out_entry.m); | |
650 | out_entry.m->get(); | |
651 | } | |
652 | more = !out_queue.empty(); | |
653 | connection->write_lock.unlock(); | |
654 | ||
655 | // send_message or requeue messages may not encode message | |
656 | if (!out_entry.is_prepared) { | |
657 | prepare_send_message(connection->get_features(), out_entry.m); | |
658 | } | |
659 | ||
9f95a23c TL |
660 | if (out_entry.m->queue_start != ceph::mono_time()) { |
661 | connection->logger->tinc(l_msgr_send_messages_queue_lat, | |
662 | ceph::mono_clock::now() - | |
663 | out_entry.m->queue_start); | |
664 | } | |
665 | ||
11fdf7f2 TL |
666 | r = write_message(out_entry.m, more); |
667 | ||
668 | connection->write_lock.lock(); | |
669 | if (r == 0) { | |
670 | ; | |
671 | } else if (r < 0) { | |
672 | ldout(cct, 1) << __func__ << " send msg failed" << dendl; | |
673 | break; | |
9f95a23c TL |
674 | } else if (r > 0) { |
675 | // Outbound message in-progress, thread will be re-awoken | |
676 | // when the outbound socket is writeable again | |
11fdf7f2 | 677 | break; |
9f95a23c | 678 | } |
11fdf7f2 | 679 | } while (can_write); |
494da23a | 680 | write_in_progress = false; |
11fdf7f2 TL |
681 | |
682 | // if r > 0 mean data still lefted, so no need _try_send. | |
683 | if (r == 0) { | |
684 | uint64_t left = ack_left; | |
685 | if (left) { | |
11fdf7f2 TL |
686 | ldout(cct, 10) << __func__ << " try send msg ack, acked " << left |
687 | << " messages" << dendl; | |
801d1391 TL |
688 | auto ack_frame = AckFrame::Encode(in_seq); |
689 | if (append_frame(ack_frame)) { | |
690 | ack_left -= left; | |
691 | left = ack_left; | |
692 | r = connection->_try_send(left); | |
693 | } else { | |
694 | r = -EILSEQ; | |
695 | } | |
11fdf7f2 TL |
696 | } else if (is_queued()) { |
697 | r = connection->_try_send(); | |
698 | } | |
699 | } | |
700 | connection->write_lock.unlock(); | |
701 | ||
702 | connection->logger->tinc(l_msgr_running_send_time, | |
703 | ceph::mono_clock::now() - start); | |
704 | if (r < 0) { | |
705 | ldout(cct, 1) << __func__ << " send msg failed" << dendl; | |
706 | connection->lock.lock(); | |
707 | fault(); | |
708 | connection->lock.unlock(); | |
709 | return; | |
710 | } | |
711 | } else { | |
494da23a | 712 | write_in_progress = false; |
11fdf7f2 TL |
713 | connection->write_lock.unlock(); |
714 | connection->lock.lock(); | |
715 | connection->write_lock.lock(); | |
716 | if (state == STANDBY && !connection->policy.server && is_queued()) { | |
717 | ldout(cct, 10) << __func__ << " policy.server is false" << dendl; | |
718 | if (server_cookie) { // only increment connect_seq if there is a session | |
719 | connect_seq++; | |
720 | } | |
721 | connection->_connect(); | |
722 | } else if (connection->cs && state != NONE && state != CLOSED && | |
723 | state != START_CONNECT) { | |
724 | r = connection->_try_send(); | |
725 | if (r < 0) { | |
726 | ldout(cct, 1) << __func__ << " send outcoming bl failed" << dendl; | |
727 | connection->write_lock.unlock(); | |
728 | fault(); | |
729 | connection->lock.unlock(); | |
730 | return; | |
731 | } | |
732 | } | |
733 | connection->write_lock.unlock(); | |
734 | connection->lock.unlock(); | |
735 | } | |
736 | } | |
737 | ||
738 | bool ProtocolV2::is_queued() { | |
739 | return !out_queue.empty() || connection->is_queued(); | |
740 | } | |
741 | ||
11fdf7f2 TL |
742 | CtPtr ProtocolV2::read(CONTINUATION_RXBPTR_TYPE<ProtocolV2> &next, |
743 | rx_buffer_t &&buffer) { | |
744 | const auto len = buffer->length(); | |
745 | const auto buf = buffer->c_str(); | |
746 | next.node = std::move(buffer); | |
747 | ssize_t r = connection->read(len, buf, | |
748 | [&next, this](char *buffer, int r) { | |
749 | if (unlikely(pre_auth.enabled) && r >= 0) { | |
750 | pre_auth.rxbuf.append(*next.node); | |
751 | ceph_assert(!cct->_conf->ms_die_on_bug || | |
adb31ebb | 752 | pre_auth.rxbuf.length() < 20000000); |
11fdf7f2 TL |
753 | } |
754 | next.r = r; | |
755 | run_continuation(next); | |
756 | }); | |
757 | if (r <= 0) { | |
758 | // error or done synchronously | |
f67539c2 | 759 | if (unlikely(pre_auth.enabled) && r == 0) { |
11fdf7f2 TL |
760 | pre_auth.rxbuf.append(*next.node); |
761 | ceph_assert(!cct->_conf->ms_die_on_bug || | |
adb31ebb | 762 | pre_auth.rxbuf.length() < 20000000); |
11fdf7f2 TL |
763 | } |
764 | next.r = r; | |
765 | return &next; | |
766 | } | |
767 | ||
768 | return nullptr; | |
769 | } | |
770 | ||
771 | template <class F> | |
772 | CtPtr ProtocolV2::write(const std::string &desc, | |
773 | CONTINUATION_TYPE<ProtocolV2> &next, | |
774 | F &frame) { | |
801d1391 TL |
775 | ceph::bufferlist bl; |
776 | try { | |
f6b5b4d7 | 777 | bl = frame.get_buffer(tx_frame_asm); |
801d1391 TL |
778 | } catch (ceph::crypto::onwire::TxHandlerError &e) { |
779 | ldout(cct, 1) << __func__ << " " << e.what() << dendl; | |
780 | return _fault(); | |
781 | } | |
f6b5b4d7 TL |
782 | |
783 | ldout(cct, 25) << __func__ << " assembled frame " << bl.length() | |
784 | << " bytes " << tx_frame_asm << dendl; | |
11fdf7f2 TL |
785 | return write(desc, next, bl); |
786 | } | |
787 | ||
788 | CtPtr ProtocolV2::write(const std::string &desc, | |
789 | CONTINUATION_TYPE<ProtocolV2> &next, | |
f67539c2 | 790 | ceph::bufferlist &buffer) { |
11fdf7f2 TL |
791 | if (unlikely(pre_auth.enabled)) { |
792 | pre_auth.txbuf.append(buffer); | |
793 | ceph_assert(!cct->_conf->ms_die_on_bug || | |
adb31ebb | 794 | pre_auth.txbuf.length() < 20000000); |
11fdf7f2 TL |
795 | } |
796 | ||
797 | ssize_t r = | |
798 | connection->write(buffer, [&next, desc, this](int r) { | |
799 | if (r < 0) { | |
800 | ldout(cct, 1) << __func__ << " " << desc << " write failed r=" << r | |
801 | << " (" << cpp_strerror(r) << ")" << dendl; | |
802 | connection->inject_delay(); | |
803 | _fault(); | |
804 | } | |
805 | run_continuation(next); | |
806 | }); | |
807 | ||
808 | if (r < 0) { | |
809 | ldout(cct, 1) << __func__ << " " << desc << " write failed r=" << r | |
810 | << " (" << cpp_strerror(r) << ")" << dendl; | |
811 | return _fault(); | |
812 | } else if (r == 0) { | |
813 | next.setParams(); | |
814 | return &next; | |
815 | } | |
816 | ||
817 | return nullptr; | |
818 | } | |
819 | ||
820 | CtPtr ProtocolV2::_banner_exchange(CtRef callback) { | |
821 | ldout(cct, 20) << __func__ << dendl; | |
822 | bannerExchangeCallback = &callback; | |
823 | ||
f67539c2 TL |
824 | ceph::bufferlist banner_payload; |
825 | using ceph::encode; | |
11fdf7f2 TL |
826 | encode((uint64_t)CEPH_MSGR2_SUPPORTED_FEATURES, banner_payload, 0); |
827 | encode((uint64_t)CEPH_MSGR2_REQUIRED_FEATURES, banner_payload, 0); | |
828 | ||
f67539c2 | 829 | ceph::bufferlist bl; |
11fdf7f2 TL |
830 | bl.append(CEPH_BANNER_V2_PREFIX, strlen(CEPH_BANNER_V2_PREFIX)); |
831 | encode((uint16_t)banner_payload.length(), bl, 0); | |
832 | bl.claim_append(banner_payload); | |
833 | ||
834 | INTERCEPT(state == BANNER_CONNECTING ? 3 : 4); | |
835 | ||
836 | return WRITE(bl, "banner", _wait_for_peer_banner); | |
837 | } | |
838 | ||
839 | CtPtr ProtocolV2::_wait_for_peer_banner() { | |
9f95a23c | 840 | unsigned banner_len = strlen(CEPH_BANNER_V2_PREFIX) + sizeof(ceph_le16); |
11fdf7f2 TL |
841 | return READ(banner_len, _handle_peer_banner); |
842 | } | |
843 | ||
844 | CtPtr ProtocolV2::_handle_peer_banner(rx_buffer_t &&buffer, int r) { | |
845 | ldout(cct, 20) << __func__ << " r=" << r << dendl; | |
846 | ||
847 | if (r < 0) { | |
848 | ldout(cct, 1) << __func__ << " read peer banner failed r=" << r << " (" | |
849 | << cpp_strerror(r) << ")" << dendl; | |
850 | return _fault(); | |
851 | } | |
852 | ||
853 | unsigned banner_prefix_len = strlen(CEPH_BANNER_V2_PREFIX); | |
854 | ||
855 | if (memcmp(buffer->c_str(), CEPH_BANNER_V2_PREFIX, banner_prefix_len)) { | |
856 | if (memcmp(buffer->c_str(), CEPH_BANNER, strlen(CEPH_BANNER)) == 0) { | |
857 | lderr(cct) << __func__ << " peer " << *connection->peer_addrs | |
858 | << " is using msgr V1 protocol" << dendl; | |
859 | return _fault(); | |
860 | } | |
861 | ldout(cct, 1) << __func__ << " accept peer sent bad banner" << dendl; | |
862 | return _fault(); | |
863 | } | |
864 | ||
865 | uint16_t payload_len; | |
f67539c2 | 866 | ceph::bufferlist bl; |
11fdf7f2 | 867 | buffer->set_offset(banner_prefix_len); |
9f95a23c | 868 | buffer->set_length(sizeof(ceph_le16)); |
11fdf7f2 TL |
869 | bl.push_back(std::move(buffer)); |
870 | auto ti = bl.cbegin(); | |
f67539c2 | 871 | using ceph::decode; |
11fdf7f2 TL |
872 | try { |
873 | decode(payload_len, ti); | |
f67539c2 | 874 | } catch (const ceph::buffer::error &e) { |
11fdf7f2 TL |
875 | lderr(cct) << __func__ << " decode banner payload len failed " << dendl; |
876 | return _fault(); | |
877 | } | |
878 | ||
879 | INTERCEPT(state == BANNER_CONNECTING ? 5 : 6); | |
880 | ||
881 | return READ(payload_len, _handle_peer_banner_payload); | |
882 | } | |
883 | ||
884 | CtPtr ProtocolV2::_handle_peer_banner_payload(rx_buffer_t &&buffer, int r) { | |
885 | ldout(cct, 20) << __func__ << " r=" << r << dendl; | |
886 | ||
887 | if (r < 0) { | |
888 | ldout(cct, 1) << __func__ << " read peer banner payload failed r=" << r | |
889 | << " (" << cpp_strerror(r) << ")" << dendl; | |
890 | return _fault(); | |
891 | } | |
892 | ||
893 | uint64_t peer_supported_features; | |
894 | uint64_t peer_required_features; | |
895 | ||
f67539c2 TL |
896 | ceph::bufferlist bl; |
897 | using ceph::decode; | |
11fdf7f2 TL |
898 | bl.push_back(std::move(buffer)); |
899 | auto ti = bl.cbegin(); | |
900 | try { | |
901 | decode(peer_supported_features, ti); | |
902 | decode(peer_required_features, ti); | |
f67539c2 | 903 | } catch (const ceph::buffer::error &e) { |
11fdf7f2 TL |
904 | lderr(cct) << __func__ << " decode banner payload failed " << dendl; |
905 | return _fault(); | |
906 | } | |
907 | ||
908 | ldout(cct, 1) << __func__ << " supported=" << std::hex | |
909 | << peer_supported_features << " required=" << std::hex | |
910 | << peer_required_features << std::dec << dendl; | |
911 | ||
912 | // Check feature bit compatibility | |
913 | ||
914 | uint64_t supported_features = CEPH_MSGR2_SUPPORTED_FEATURES; | |
915 | uint64_t required_features = CEPH_MSGR2_REQUIRED_FEATURES; | |
916 | ||
917 | if ((required_features & peer_supported_features) != required_features) { | |
918 | ldout(cct, 1) << __func__ << " peer does not support all required features" | |
919 | << " required=" << std::hex << required_features | |
920 | << " supported=" << std::hex << peer_supported_features | |
921 | << std::dec << dendl; | |
922 | stop(); | |
923 | connection->dispatch_queue->queue_reset(connection); | |
924 | return nullptr; | |
925 | } | |
926 | if ((supported_features & peer_required_features) != peer_required_features) { | |
927 | ldout(cct, 1) << __func__ << " we do not support all peer required features" | |
928 | << " required=" << std::hex << peer_required_features | |
929 | << " supported=" << supported_features << std::dec << dendl; | |
930 | stop(); | |
931 | connection->dispatch_queue->queue_reset(connection); | |
932 | return nullptr; | |
933 | } | |
934 | ||
f6b5b4d7 TL |
935 | this->peer_supported_features = peer_supported_features; |
936 | if (peer_required_features == 0) { | |
11fdf7f2 TL |
937 | this->connection_features = msgr2_required; |
938 | } | |
939 | ||
f6b5b4d7 TL |
940 | // if the peer supports msgr2.1, switch to it |
941 | bool is_rev1 = HAVE_MSGR2_FEATURE(peer_supported_features, REVISION_1); | |
942 | tx_frame_asm.set_is_rev1(is_rev1); | |
943 | rx_frame_asm.set_is_rev1(is_rev1); | |
11fdf7f2 TL |
944 | |
945 | if (state == BANNER_CONNECTING) { | |
946 | state = HELLO_CONNECTING; | |
947 | } | |
948 | else { | |
949 | ceph_assert(state == BANNER_ACCEPTING); | |
950 | state = HELLO_ACCEPTING; | |
951 | } | |
952 | ||
953 | auto hello = HelloFrame::Encode(messenger->get_mytype(), | |
954 | connection->target_addr); | |
955 | ||
956 | INTERCEPT(state == HELLO_CONNECTING ? 7 : 8); | |
957 | ||
958 | return WRITE(hello, "hello frame", read_frame); | |
959 | } | |
960 | ||
961 | CtPtr ProtocolV2::handle_hello(ceph::bufferlist &payload) | |
962 | { | |
963 | ldout(cct, 20) << __func__ | |
964 | << " payload.length()=" << payload.length() << dendl; | |
965 | ||
966 | if (state != HELLO_CONNECTING && state != HELLO_ACCEPTING) { | |
967 | lderr(cct) << __func__ << " not in hello exchange state!" << dendl; | |
968 | return _fault(); | |
969 | } | |
970 | ||
971 | auto hello = HelloFrame::Decode(payload); | |
972 | ||
973 | ldout(cct, 5) << __func__ << " received hello:" | |
974 | << " peer_type=" << (int)hello.entity_type() | |
975 | << " peer_addr_for_me=" << hello.peer_addr() << dendl; | |
976 | ||
81eedcae TL |
977 | sockaddr_storage ss; |
978 | socklen_t len = sizeof(ss); | |
979 | getsockname(connection->cs.fd(), (sockaddr *)&ss, &len); | |
980 | ldout(cct, 5) << __func__ << " getsockname says I am " << (sockaddr *)&ss | |
981 | << " when talking to " << connection->target_addr << dendl; | |
982 | ||
11fdf7f2 TL |
983 | if (connection->get_peer_type() == -1) { |
984 | connection->set_peer_type(hello.entity_type()); | |
985 | ||
986 | ceph_assert(state == HELLO_ACCEPTING); | |
987 | connection->policy = messenger->get_policy(hello.entity_type()); | |
988 | ldout(cct, 10) << __func__ << " accept of host_type " | |
989 | << (int)hello.entity_type() | |
990 | << ", policy.lossy=" << connection->policy.lossy | |
991 | << " policy.server=" << connection->policy.server | |
992 | << " policy.standby=" << connection->policy.standby | |
993 | << " policy.resetcheck=" << connection->policy.resetcheck | |
994 | << dendl; | |
995 | } else { | |
996 | ceph_assert(state == HELLO_CONNECTING); | |
997 | if (connection->get_peer_type() != hello.entity_type()) { | |
998 | ldout(cct, 1) << __func__ << " connection peer type does not match what" | |
999 | << " peer advertises " << connection->get_peer_type() | |
1000 | << " != " << (int)hello.entity_type() << dendl; | |
1001 | stop(); | |
1002 | connection->dispatch_queue->queue_reset(connection); | |
1003 | return nullptr; | |
1004 | } | |
1005 | } | |
1006 | ||
81eedcae TL |
1007 | if (messenger->get_myaddrs().empty() || |
1008 | messenger->get_myaddrs().front().is_blank_ip()) { | |
1009 | entity_addr_t a; | |
1010 | if (cct->_conf->ms_learn_addr_from_peer) { | |
1011 | ldout(cct, 1) << __func__ << " peer " << connection->target_addr | |
1012 | << " says I am " << hello.peer_addr() << " (socket says " | |
1013 | << (sockaddr*)&ss << ")" << dendl; | |
1014 | a = hello.peer_addr(); | |
1015 | } else { | |
1016 | ldout(cct, 1) << __func__ << " socket to " << connection->target_addr | |
1017 | << " says I am " << (sockaddr*)&ss | |
1018 | << " (peer says " << hello.peer_addr() << ")" << dendl; | |
1019 | a.set_sockaddr((sockaddr *)&ss); | |
1020 | } | |
1021 | a.set_type(entity_addr_t::TYPE_MSGR2); // anything but NONE; learned_addr ignores this | |
1022 | a.set_port(0); | |
1023 | connection->lock.unlock(); | |
1024 | messenger->learned_addr(a); | |
1025 | if (cct->_conf->ms_inject_internal_delays && | |
1026 | cct->_conf->ms_inject_socket_failures) { | |
1027 | if (rand() % cct->_conf->ms_inject_socket_failures == 0) { | |
1028 | ldout(cct, 10) << __func__ << " sleep for " | |
1029 | << cct->_conf->ms_inject_internal_delays << dendl; | |
1030 | utime_t t; | |
1031 | t.set_from_double(cct->_conf->ms_inject_internal_delays); | |
1032 | t.sleep(); | |
1033 | } | |
1034 | } | |
1035 | connection->lock.lock(); | |
1036 | if (state != HELLO_CONNECTING) { | |
1037 | ldout(cct, 1) << __func__ | |
1038 | << " state changed while learned_addr, mark_down or " | |
1039 | << " replacing must be happened just now" << dendl; | |
1040 | return nullptr; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | ||
1045 | ||
11fdf7f2 TL |
1046 | CtPtr callback; |
1047 | callback = bannerExchangeCallback; | |
1048 | bannerExchangeCallback = nullptr; | |
1049 | ceph_assert(callback); | |
1050 | return callback; | |
1051 | } | |
1052 | ||
1053 | CtPtr ProtocolV2::read_frame() { | |
1054 | if (state == CLOSED) { | |
1055 | return nullptr; | |
1056 | } | |
1057 | ||
1058 | ldout(cct, 20) << __func__ << dendl; | |
f6b5b4d7 TL |
1059 | rx_preamble.clear(); |
1060 | rx_epilogue.clear(); | |
1061 | rx_segments_data.clear(); | |
1062 | ||
1063 | return READ(rx_frame_asm.get_preamble_onwire_len(), | |
1064 | handle_read_frame_preamble_main); | |
11fdf7f2 TL |
1065 | } |
1066 | ||
1067 | CtPtr ProtocolV2::handle_read_frame_preamble_main(rx_buffer_t &&buffer, int r) { | |
1068 | ldout(cct, 20) << __func__ << " r=" << r << dendl; | |
1069 | ||
1070 | if (r < 0) { | |
f6b5b4d7 | 1071 | ldout(cct, 1) << __func__ << " read frame preamble failed r=" << r |
11fdf7f2 TL |
1072 | << " (" << cpp_strerror(r) << ")" << dendl; |
1073 | return _fault(); | |
1074 | } | |
1075 | ||
f6b5b4d7 | 1076 | rx_preamble.push_back(std::move(buffer)); |
11fdf7f2 TL |
1077 | |
1078 | ldout(cct, 30) << __func__ << " preamble\n"; | |
f6b5b4d7 | 1079 | rx_preamble.hexdump(*_dout); |
11fdf7f2 TL |
1080 | *_dout << dendl; |
1081 | ||
f6b5b4d7 TL |
1082 | try { |
1083 | next_tag = rx_frame_asm.disassemble_preamble(rx_preamble); | |
1084 | } catch (FrameError& e) { | |
1085 | ldout(cct, 1) << __func__ << " " << e.what() << dendl; | |
1086 | return _fault(); | |
1087 | } catch (ceph::crypto::onwire::MsgAuthError&) { | |
1088 | ldout(cct, 1) << __func__ << "bad auth tag" << dendl; | |
1089 | return _fault(); | |
1090 | } | |
11fdf7f2 | 1091 | |
f6b5b4d7 TL |
1092 | ldout(cct, 25) << __func__ << " disassembled preamble " << rx_frame_asm |
1093 | << dendl; | |
11fdf7f2 | 1094 | |
f6b5b4d7 | 1095 | if (session_stream_handlers.rx) { |
11fdf7f2 | 1096 | ldout(cct, 30) << __func__ << " preamble after decrypt\n"; |
f6b5b4d7 | 1097 | rx_preamble.hexdump(*_dout); |
11fdf7f2 TL |
1098 | *_dout << dendl; |
1099 | } | |
1100 | ||
11fdf7f2 TL |
1101 | // does it need throttle? |
1102 | if (next_tag == Tag::MESSAGE) { | |
1103 | if (state != READY) { | |
1104 | lderr(cct) << __func__ << " not in ready state!" << dendl; | |
1105 | return _fault(); | |
1106 | } | |
a4b75251 | 1107 | recv_stamp = ceph_clock_now(); |
11fdf7f2 TL |
1108 | state = THROTTLE_MESSAGE; |
1109 | return CONTINUE(throttle_message); | |
1110 | } else { | |
1111 | return read_frame_segment(); | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | CtPtr ProtocolV2::handle_read_frame_dispatch() { | |
1116 | ldout(cct, 10) << __func__ | |
1117 | << " tag=" << static_cast<uint32_t>(next_tag) << dendl; | |
1118 | ||
1119 | switch (next_tag) { | |
1120 | case Tag::HELLO: | |
1121 | case Tag::AUTH_REQUEST: | |
1122 | case Tag::AUTH_BAD_METHOD: | |
1123 | case Tag::AUTH_REPLY_MORE: | |
1124 | case Tag::AUTH_REQUEST_MORE: | |
1125 | case Tag::AUTH_DONE: | |
1126 | case Tag::AUTH_SIGNATURE: | |
1127 | case Tag::CLIENT_IDENT: | |
1128 | case Tag::SERVER_IDENT: | |
1129 | case Tag::IDENT_MISSING_FEATURES: | |
1130 | case Tag::SESSION_RECONNECT: | |
1131 | case Tag::SESSION_RESET: | |
1132 | case Tag::SESSION_RETRY: | |
1133 | case Tag::SESSION_RETRY_GLOBAL: | |
1134 | case Tag::SESSION_RECONNECT_OK: | |
1135 | case Tag::KEEPALIVE2: | |
1136 | case Tag::KEEPALIVE2_ACK: | |
1137 | case Tag::ACK: | |
1138 | case Tag::WAIT: | |
1139 | return handle_frame_payload(); | |
1140 | case Tag::MESSAGE: | |
1141 | return handle_message(); | |
1142 | default: { | |
1143 | lderr(cct) << __func__ | |
1144 | << " received unknown tag=" << static_cast<uint32_t>(next_tag) | |
1145 | << dendl; | |
1146 | return _fault(); | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | return nullptr; | |
1151 | } | |
1152 | ||
1153 | CtPtr ProtocolV2::read_frame_segment() { | |
f6b5b4d7 TL |
1154 | size_t seg_idx = rx_segments_data.size(); |
1155 | ldout(cct, 20) << __func__ << " seg_idx=" << seg_idx << dendl; | |
1156 | rx_segments_data.emplace_back(); | |
1157 | ||
1158 | uint32_t onwire_len = rx_frame_asm.get_segment_onwire_len(seg_idx); | |
1159 | if (onwire_len == 0) { | |
1160 | return _handle_read_frame_segment(); | |
1161 | } | |
11fdf7f2 | 1162 | |
11fdf7f2 | 1163 | rx_buffer_t rx_buffer; |
f6b5b4d7 | 1164 | uint16_t align = rx_frame_asm.get_segment_align(seg_idx); |
11fdf7f2 | 1165 | try { |
f67539c2 | 1166 | rx_buffer = ceph::buffer::ptr_node::create(ceph::buffer::create_aligned( |
f6b5b4d7 | 1167 | onwire_len, align)); |
b3b6e05e | 1168 | } catch (const ceph::buffer::bad_alloc&) { |
11fdf7f2 | 1169 | // Catching because of potential issues with satisfying alignment. |
f6b5b4d7 TL |
1170 | ldout(cct, 1) << __func__ << " can't allocate aligned rx_buffer" |
1171 | << " len=" << onwire_len | |
1172 | << " align=" << align | |
1173 | << dendl; | |
11fdf7f2 TL |
1174 | return _fault(); |
1175 | } | |
1176 | ||
1177 | return READ_RXBUF(std::move(rx_buffer), handle_read_frame_segment); | |
1178 | } | |
1179 | ||
1180 | CtPtr ProtocolV2::handle_read_frame_segment(rx_buffer_t &&rx_buffer, int r) { | |
1181 | ldout(cct, 20) << __func__ << " r=" << r << dendl; | |
1182 | ||
1183 | if (r < 0) { | |
1184 | ldout(cct, 1) << __func__ << " read frame segment failed r=" << r << " (" | |
1185 | << cpp_strerror(r) << ")" << dendl; | |
1186 | return _fault(); | |
1187 | } | |
1188 | ||
11fdf7f2 | 1189 | rx_segments_data.back().push_back(std::move(rx_buffer)); |
f6b5b4d7 TL |
1190 | return _handle_read_frame_segment(); |
1191 | } | |
11fdf7f2 | 1192 | |
f6b5b4d7 TL |
1193 | CtPtr ProtocolV2::_handle_read_frame_segment() { |
1194 | if (rx_segments_data.size() == rx_frame_asm.get_num_segments()) { | |
11fdf7f2 | 1195 | // OK, all segments planned to read are read. Can go with epilogue. |
f6b5b4d7 TL |
1196 | uint32_t epilogue_onwire_len = rx_frame_asm.get_epilogue_onwire_len(); |
1197 | if (epilogue_onwire_len == 0) { | |
1198 | return _handle_read_frame_epilogue_main(); | |
1199 | } | |
1200 | return READ(epilogue_onwire_len, handle_read_frame_epilogue_main); | |
11fdf7f2 | 1201 | } |
f6b5b4d7 TL |
1202 | // TODO: for makeshift only. This will be more generic and throttled |
1203 | return read_frame_segment(); | |
11fdf7f2 TL |
1204 | } |
1205 | ||
1206 | CtPtr ProtocolV2::handle_frame_payload() { | |
1207 | ceph_assert(!rx_segments_data.empty()); | |
1208 | auto& payload = rx_segments_data.back(); | |
1209 | ||
1210 | ldout(cct, 30) << __func__ << "\n"; | |
1211 | payload.hexdump(*_dout); | |
1212 | *_dout << dendl; | |
1213 | ||
1214 | switch (next_tag) { | |
1215 | case Tag::HELLO: | |
1216 | return handle_hello(payload); | |
1217 | case Tag::AUTH_REQUEST: | |
1218 | return handle_auth_request(payload); | |
1219 | case Tag::AUTH_BAD_METHOD: | |
1220 | return handle_auth_bad_method(payload); | |
1221 | case Tag::AUTH_REPLY_MORE: | |
1222 | return handle_auth_reply_more(payload); | |
1223 | case Tag::AUTH_REQUEST_MORE: | |
1224 | return handle_auth_request_more(payload); | |
1225 | case Tag::AUTH_DONE: | |
1226 | return handle_auth_done(payload); | |
1227 | case Tag::AUTH_SIGNATURE: | |
1228 | return handle_auth_signature(payload); | |
1229 | case Tag::CLIENT_IDENT: | |
1230 | return handle_client_ident(payload); | |
1231 | case Tag::SERVER_IDENT: | |
1232 | return handle_server_ident(payload); | |
1233 | case Tag::IDENT_MISSING_FEATURES: | |
1234 | return handle_ident_missing_features(payload); | |
1235 | case Tag::SESSION_RECONNECT: | |
1236 | return handle_reconnect(payload); | |
1237 | case Tag::SESSION_RESET: | |
1238 | return handle_session_reset(payload); | |
1239 | case Tag::SESSION_RETRY: | |
1240 | return handle_session_retry(payload); | |
1241 | case Tag::SESSION_RETRY_GLOBAL: | |
1242 | return handle_session_retry_global(payload); | |
1243 | case Tag::SESSION_RECONNECT_OK: | |
1244 | return handle_reconnect_ok(payload); | |
1245 | case Tag::KEEPALIVE2: | |
1246 | return handle_keepalive2(payload); | |
1247 | case Tag::KEEPALIVE2_ACK: | |
1248 | return handle_keepalive2_ack(payload); | |
1249 | case Tag::ACK: | |
1250 | return handle_message_ack(payload); | |
1251 | case Tag::WAIT: | |
1252 | return handle_wait(payload); | |
1253 | default: | |
1254 | ceph_abort(); | |
1255 | } | |
1256 | return nullptr; | |
1257 | } | |
1258 | ||
1259 | CtPtr ProtocolV2::ready() { | |
1260 | ldout(cct, 25) << __func__ << dendl; | |
1261 | ||
1262 | reconnecting = false; | |
1263 | replacing = false; | |
1264 | ||
1265 | // make sure no pending tick timer | |
1266 | if (connection->last_tick_id) { | |
1267 | connection->center->delete_time_event(connection->last_tick_id); | |
1268 | } | |
1269 | connection->last_tick_id = connection->center->create_time_event( | |
1270 | connection->inactive_timeout_us, connection->tick_handler); | |
1271 | ||
1272 | { | |
1273 | std::lock_guard<std::mutex> l(connection->write_lock); | |
1274 | can_write = true; | |
1275 | if (!out_queue.empty()) { | |
1276 | connection->center->dispatch_event_external(connection->write_handler); | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | connection->maybe_start_delay_thread(); | |
1281 | ||
1282 | state = READY; | |
1283 | ldout(cct, 1) << __func__ << " entity=" << peer_name << " client_cookie=" | |
1284 | << std::hex << client_cookie << " server_cookie=" | |
1285 | << server_cookie << std::dec << " in_seq=" << in_seq | |
1286 | << " out_seq=" << out_seq << dendl; | |
1287 | ||
1288 | INTERCEPT(15); | |
1289 | ||
1290 | return CONTINUE(read_frame); | |
1291 | } | |
1292 | ||
1293 | CtPtr ProtocolV2::handle_read_frame_epilogue_main(rx_buffer_t &&buffer, int r) | |
1294 | { | |
1295 | ldout(cct, 20) << __func__ << " r=" << r << dendl; | |
1296 | ||
1297 | if (r < 0) { | |
f6b5b4d7 TL |
1298 | ldout(cct, 1) << __func__ << " read frame epilogue failed r=" << r |
1299 | << " (" << cpp_strerror(r) << ")" << dendl; | |
11fdf7f2 TL |
1300 | return _fault(); |
1301 | } | |
1302 | ||
f6b5b4d7 TL |
1303 | rx_epilogue.push_back(std::move(buffer)); |
1304 | return _handle_read_frame_epilogue_main(); | |
1305 | } | |
11fdf7f2 | 1306 | |
f6b5b4d7 TL |
1307 | CtPtr ProtocolV2::_handle_read_frame_epilogue_main() { |
1308 | bool aborted; | |
1309 | try { | |
1310 | rx_frame_asm.disassemble_first_segment(rx_preamble, rx_segments_data[0]); | |
1311 | aborted = !rx_frame_asm.disassemble_remaining_segments( | |
1312 | rx_segments_data.data(), rx_epilogue); | |
1313 | } catch (FrameError& e) { | |
1314 | ldout(cct, 1) << __func__ << " " << e.what() << dendl; | |
1315 | return _fault(); | |
1316 | } catch (ceph::crypto::onwire::MsgAuthError&) { | |
1317 | ldout(cct, 1) << __func__ << "bad auth tag" << dendl; | |
1318 | return _fault(); | |
11fdf7f2 TL |
1319 | } |
1320 | ||
1321 | // we do have a mechanism that allows transmitter to start sending message | |
1322 | // and abort after putting entire data field on wire. This will be used by | |
1323 | // the kernel client to avoid unnecessary buffering. | |
f6b5b4d7 | 1324 | if (aborted) { |
11fdf7f2 TL |
1325 | reset_throttle(); |
1326 | state = READY; | |
1327 | return CONTINUE(read_frame); | |
11fdf7f2 | 1328 | } |
f6b5b4d7 | 1329 | return handle_read_frame_dispatch(); |
11fdf7f2 TL |
1330 | } |
1331 | ||
1332 | CtPtr ProtocolV2::handle_message() { | |
1333 | ldout(cct, 20) << __func__ << dendl; | |
1334 | ceph_assert(state == THROTTLE_DONE); | |
1335 | ||
11fdf7f2 | 1336 | const size_t cur_msg_size = get_current_msg_size(); |
f6b5b4d7 | 1337 | auto msg_frame = MessageFrame::Decode(rx_segments_data); |
11fdf7f2 TL |
1338 | |
1339 | // XXX: paranoid copy just to avoid oops | |
1340 | ceph_msg_header2 current_header = msg_frame.header(); | |
1341 | ||
1342 | ldout(cct, 5) << __func__ | |
1343 | << " got " << msg_frame.front_len() | |
1344 | << " + " << msg_frame.middle_len() | |
1345 | << " + " << msg_frame.data_len() | |
1346 | << " byte message." | |
1347 | << " envelope type=" << current_header.type | |
1348 | << " src " << peer_name | |
1349 | << " off " << current_header.data_off | |
1350 | << dendl; | |
1351 | ||
1352 | INTERCEPT(16); | |
1353 | ceph_msg_header header{current_header.seq, | |
1354 | current_header.tid, | |
1355 | current_header.type, | |
1356 | current_header.priority, | |
1357 | current_header.version, | |
eafe8130 TL |
1358 | init_le32(msg_frame.front_len()), |
1359 | init_le32(msg_frame.middle_len()), | |
1360 | init_le32(msg_frame.data_len()), | |
11fdf7f2 TL |
1361 | current_header.data_off, |
1362 | peer_name, | |
1363 | current_header.compat_version, | |
1364 | current_header.reserved, | |
eafe8130 TL |
1365 | init_le32(0)}; |
1366 | ceph_msg_footer footer{init_le32(0), init_le32(0), | |
1367 | init_le32(0), init_le64(0), current_header.flags}; | |
11fdf7f2 TL |
1368 | |
1369 | Message *message = decode_message(cct, 0, header, footer, | |
1370 | msg_frame.front(), | |
1371 | msg_frame.middle(), | |
1372 | msg_frame.data(), | |
1373 | connection); | |
1374 | if (!message) { | |
1375 | ldout(cct, 1) << __func__ << " decode message failed " << dendl; | |
1376 | return _fault(); | |
1377 | } else { | |
1378 | state = READ_MESSAGE_COMPLETE; | |
1379 | } | |
1380 | ||
1381 | INTERCEPT(17); | |
1382 | ||
1383 | message->set_byte_throttler(connection->policy.throttler_bytes); | |
1384 | message->set_message_throttler(connection->policy.throttler_messages); | |
1385 | ||
1386 | // store reservation size in message, so we don't get confused | |
1387 | // by messages entering the dispatch queue through other paths. | |
1388 | message->set_dispatch_throttle_size(cur_msg_size); | |
1389 | ||
1390 | message->set_recv_stamp(recv_stamp); | |
1391 | message->set_throttle_stamp(throttle_stamp); | |
1392 | message->set_recv_complete_stamp(ceph_clock_now()); | |
1393 | ||
1394 | // check received seq#. if it is old, drop the message. | |
1395 | // note that incoming messages may skip ahead. this is convenient for the | |
1396 | // client side queueing because messages can't be renumbered, but the (kernel) | |
1397 | // client will occasionally pull a message out of the sent queue to send | |
1398 | // elsewhere. in that case it doesn't matter if we "got" it or not. | |
1399 | uint64_t cur_seq = in_seq; | |
1400 | if (message->get_seq() <= cur_seq) { | |
1401 | ldout(cct, 0) << __func__ << " got old message " << message->get_seq() | |
1402 | << " <= " << cur_seq << " " << message << " " << *message | |
1403 | << ", discarding" << dendl; | |
1404 | message->put(); | |
1405 | if (connection->has_feature(CEPH_FEATURE_RECONNECT_SEQ) && | |
1406 | cct->_conf->ms_die_on_old_message) { | |
1407 | ceph_assert(0 == "old msgs despite reconnect_seq feature"); | |
1408 | } | |
1409 | return nullptr; | |
1410 | } | |
1411 | if (message->get_seq() > cur_seq + 1) { | |
1412 | ldout(cct, 0) << __func__ << " missed message? skipped from seq " | |
1413 | << cur_seq << " to " << message->get_seq() << dendl; | |
1414 | if (cct->_conf->ms_die_on_skipped_message) { | |
1415 | ceph_assert(0 == "skipped incoming seq"); | |
1416 | } | |
1417 | } | |
1418 | ||
9f95a23c | 1419 | #if defined(WITH_EVENTTRACE) |
11fdf7f2 TL |
1420 | if (message->get_type() == CEPH_MSG_OSD_OP || |
1421 | message->get_type() == CEPH_MSG_OSD_OPREPLY) { | |
1422 | utime_t ltt_processed_stamp = ceph_clock_now(); | |
1423 | double usecs_elapsed = | |
a4b75251 | 1424 | (ltt_processed_stamp.to_nsec() - recv_stamp.to_nsec()) / 1000; |
11fdf7f2 TL |
1425 | ostringstream buf; |
1426 | if (message->get_type() == CEPH_MSG_OSD_OP) | |
1427 | OID_ELAPSED_WITH_MSG(message, usecs_elapsed, "TIME_TO_DECODE_OSD_OP", | |
1428 | false); | |
1429 | else | |
1430 | OID_ELAPSED_WITH_MSG(message, usecs_elapsed, "TIME_TO_DECODE_OSD_OPREPLY", | |
1431 | false); | |
1432 | } | |
1433 | #endif | |
1434 | ||
1435 | // note last received message. | |
1436 | in_seq = message->get_seq(); | |
1437 | ldout(cct, 5) << __func__ << " received message m=" << message | |
1438 | << " seq=" << message->get_seq() | |
1439 | << " from=" << message->get_source() << " type=" << header.type | |
1440 | << " " << *message << dendl; | |
1441 | ||
1442 | bool need_dispatch_writer = false; | |
1443 | if (!connection->policy.lossy) { | |
1444 | ack_left++; | |
1445 | need_dispatch_writer = true; | |
1446 | } | |
1447 | ||
1448 | state = READY; | |
1449 | ||
9f95a23c TL |
1450 | ceph::mono_time fast_dispatch_time; |
1451 | ||
1452 | if (connection->is_blackhole()) { | |
1453 | ldout(cct, 10) << __func__ << " blackhole " << *message << dendl; | |
1454 | message->put(); | |
1455 | goto out; | |
1456 | } | |
1457 | ||
11fdf7f2 | 1458 | connection->logger->inc(l_msgr_recv_messages); |
f6b5b4d7 TL |
1459 | connection->logger->inc(l_msgr_recv_bytes, |
1460 | rx_frame_asm.get_frame_onwire_len()); | |
11fdf7f2 TL |
1461 | |
1462 | messenger->ms_fast_preprocess(message); | |
9f95a23c | 1463 | fast_dispatch_time = ceph::mono_clock::now(); |
11fdf7f2 | 1464 | connection->logger->tinc(l_msgr_running_recv_time, |
9f95a23c | 1465 | fast_dispatch_time - connection->recv_start_time); |
11fdf7f2 TL |
1466 | if (connection->delay_state) { |
1467 | double delay_period = 0; | |
1468 | if (rand() % 10000 < cct->_conf->ms_inject_delay_probability * 10000.0) { | |
1469 | delay_period = | |
1470 | cct->_conf->ms_inject_delay_max * (double)(rand() % 10000) / 10000.0; | |
1471 | ldout(cct, 1) << "queue_received will delay after " | |
1472 | << (ceph_clock_now() + delay_period) << " on " << message | |
1473 | << " " << *message << dendl; | |
1474 | } | |
1475 | connection->delay_state->queue(delay_period, message); | |
1476 | } else if (messenger->ms_can_fast_dispatch(message)) { | |
1477 | connection->lock.unlock(); | |
1478 | connection->dispatch_queue->fast_dispatch(message); | |
1479 | connection->recv_start_time = ceph::mono_clock::now(); | |
1480 | connection->logger->tinc(l_msgr_running_fast_dispatch_time, | |
1481 | connection->recv_start_time - fast_dispatch_time); | |
1482 | connection->lock.lock(); | |
9f95a23c TL |
1483 | // we might have been reused by another connection |
1484 | // let's check if that is the case | |
1485 | if (state != READY) { | |
1486 | // yes, that was the case, let's do nothing | |
1487 | return nullptr; | |
1488 | } | |
11fdf7f2 TL |
1489 | } else { |
1490 | connection->dispatch_queue->enqueue(message, message->get_priority(), | |
1491 | connection->conn_id); | |
1492 | } | |
1493 | ||
1494 | handle_message_ack(current_header.ack_seq); | |
1495 | ||
9f95a23c | 1496 | out: |
11fdf7f2 TL |
1497 | if (need_dispatch_writer && connection->is_connected()) { |
1498 | connection->center->dispatch_event_external(connection->write_handler); | |
1499 | } | |
1500 | ||
1501 | return CONTINUE(read_frame); | |
1502 | } | |
1503 | ||
1504 | ||
1505 | CtPtr ProtocolV2::throttle_message() { | |
1506 | ldout(cct, 20) << __func__ << dendl; | |
1507 | ||
1508 | if (connection->policy.throttler_messages) { | |
1509 | ldout(cct, 10) << __func__ << " wants " << 1 | |
1510 | << " message from policy throttler " | |
1511 | << connection->policy.throttler_messages->get_current() | |
1512 | << "/" << connection->policy.throttler_messages->get_max() | |
1513 | << dendl; | |
1514 | if (!connection->policy.throttler_messages->get_or_fail()) { | |
1515 | ldout(cct, 10) << __func__ << " wants 1 message from policy throttle " | |
1516 | << connection->policy.throttler_messages->get_current() | |
1517 | << "/" << connection->policy.throttler_messages->get_max() | |
1518 | << " failed, just wait." << dendl; | |
1519 | // following thread pool deal with th full message queue isn't a | |
1520 | // short time, so we can wait a ms. | |
1521 | if (connection->register_time_events.empty()) { | |
1522 | connection->register_time_events.insert( | |
1523 | connection->center->create_time_event(1000, | |
1524 | connection->wakeup_handler)); | |
1525 | } | |
1526 | return nullptr; | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | state = THROTTLE_BYTES; | |
1531 | return CONTINUE(throttle_bytes); | |
1532 | } | |
1533 | ||
1534 | CtPtr ProtocolV2::throttle_bytes() { | |
1535 | ldout(cct, 20) << __func__ << dendl; | |
1536 | ||
1537 | const size_t cur_msg_size = get_current_msg_size(); | |
1538 | if (cur_msg_size) { | |
1539 | if (connection->policy.throttler_bytes) { | |
1540 | ldout(cct, 10) << __func__ << " wants " << cur_msg_size | |
1541 | << " bytes from policy throttler " | |
1542 | << connection->policy.throttler_bytes->get_current() << "/" | |
1543 | << connection->policy.throttler_bytes->get_max() << dendl; | |
1544 | if (!connection->policy.throttler_bytes->get_or_fail(cur_msg_size)) { | |
1545 | ldout(cct, 10) << __func__ << " wants " << cur_msg_size | |
1546 | << " bytes from policy throttler " | |
1547 | << connection->policy.throttler_bytes->get_current() | |
1548 | << "/" << connection->policy.throttler_bytes->get_max() | |
1549 | << " failed, just wait." << dendl; | |
1550 | // following thread pool deal with th full message queue isn't a | |
1551 | // short time, so we can wait a ms. | |
1552 | if (connection->register_time_events.empty()) { | |
1553 | connection->register_time_events.insert( | |
1554 | connection->center->create_time_event( | |
1555 | 1000, connection->wakeup_handler)); | |
1556 | } | |
1557 | return nullptr; | |
1558 | } | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | state = THROTTLE_DISPATCH_QUEUE; | |
1563 | return CONTINUE(throttle_dispatch_queue); | |
1564 | } | |
1565 | ||
1566 | CtPtr ProtocolV2::throttle_dispatch_queue() { | |
1567 | ldout(cct, 20) << __func__ << dendl; | |
1568 | ||
1569 | const size_t cur_msg_size = get_current_msg_size(); | |
1570 | if (cur_msg_size) { | |
1571 | if (!connection->dispatch_queue->dispatch_throttler.get_or_fail( | |
1572 | cur_msg_size)) { | |
1573 | ldout(cct, 10) | |
1574 | << __func__ << " wants " << cur_msg_size | |
1575 | << " bytes from dispatch throttle " | |
1576 | << connection->dispatch_queue->dispatch_throttler.get_current() << "/" | |
1577 | << connection->dispatch_queue->dispatch_throttler.get_max() | |
1578 | << " failed, just wait." << dendl; | |
1579 | // following thread pool deal with th full message queue isn't a | |
1580 | // short time, so we can wait a ms. | |
1581 | if (connection->register_time_events.empty()) { | |
1582 | connection->register_time_events.insert( | |
1583 | connection->center->create_time_event(1000, | |
1584 | connection->wakeup_handler)); | |
1585 | } | |
1586 | return nullptr; | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | throttle_stamp = ceph_clock_now(); | |
1591 | state = THROTTLE_DONE; | |
1592 | ||
1593 | return read_frame_segment(); | |
1594 | } | |
1595 | ||
1596 | CtPtr ProtocolV2::handle_keepalive2(ceph::bufferlist &payload) | |
1597 | { | |
1598 | ldout(cct, 20) << __func__ | |
1599 | << " payload.length()=" << payload.length() << dendl; | |
1600 | ||
1601 | if (state != READY) { | |
1602 | lderr(cct) << __func__ << " not in ready state!" << dendl; | |
1603 | return _fault(); | |
1604 | } | |
1605 | ||
1606 | auto keepalive_frame = KeepAliveFrame::Decode(payload); | |
1607 | ||
1608 | ldout(cct, 30) << __func__ << " got KEEPALIVE2 tag ..." << dendl; | |
1609 | ||
1610 | connection->write_lock.lock(); | |
801d1391 TL |
1611 | auto keepalive_ack_frame = KeepAliveFrameAck::Encode(keepalive_frame.timestamp()); |
1612 | if (!append_frame(keepalive_ack_frame)) { | |
1613 | connection->write_lock.unlock(); | |
1614 | return _fault(); | |
1615 | } | |
11fdf7f2 TL |
1616 | connection->write_lock.unlock(); |
1617 | ||
1618 | ldout(cct, 20) << __func__ << " got KEEPALIVE2 " | |
1619 | << keepalive_frame.timestamp() << dendl; | |
1620 | connection->set_last_keepalive(ceph_clock_now()); | |
1621 | ||
1622 | if (is_connected()) { | |
1623 | connection->center->dispatch_event_external(connection->write_handler); | |
1624 | } | |
1625 | ||
1626 | return CONTINUE(read_frame); | |
1627 | } | |
1628 | ||
1629 | CtPtr ProtocolV2::handle_keepalive2_ack(ceph::bufferlist &payload) | |
1630 | { | |
1631 | ldout(cct, 20) << __func__ | |
1632 | << " payload.length()=" << payload.length() << dendl; | |
1633 | ||
1634 | if (state != READY) { | |
1635 | lderr(cct) << __func__ << " not in ready state!" << dendl; | |
1636 | return _fault(); | |
1637 | } | |
1638 | ||
1639 | auto keepalive_ack_frame = KeepAliveFrameAck::Decode(payload); | |
1640 | connection->set_last_keepalive_ack(keepalive_ack_frame.timestamp()); | |
1641 | ldout(cct, 20) << __func__ << " got KEEPALIVE_ACK" << dendl; | |
1642 | ||
1643 | return CONTINUE(read_frame); | |
1644 | } | |
1645 | ||
1646 | CtPtr ProtocolV2::handle_message_ack(ceph::bufferlist &payload) | |
1647 | { | |
1648 | ldout(cct, 20) << __func__ | |
1649 | << " payload.length()=" << payload.length() << dendl; | |
1650 | ||
1651 | if (state != READY) { | |
1652 | lderr(cct) << __func__ << " not in ready state!" << dendl; | |
1653 | return _fault(); | |
1654 | } | |
1655 | ||
1656 | auto ack = AckFrame::Decode(payload); | |
1657 | handle_message_ack(ack.seq()); | |
1658 | return CONTINUE(read_frame); | |
1659 | } | |
1660 | ||
1661 | /* Client Protocol Methods */ | |
1662 | ||
1663 | CtPtr ProtocolV2::start_client_banner_exchange() { | |
1664 | ldout(cct, 20) << __func__ << dendl; | |
1665 | ||
1666 | INTERCEPT(1); | |
1667 | ||
1668 | state = BANNER_CONNECTING; | |
1669 | ||
1670 | global_seq = messenger->get_global_seq(); | |
1671 | ||
1672 | return _banner_exchange(CONTINUATION(post_client_banner_exchange)); | |
1673 | } | |
1674 | ||
1675 | CtPtr ProtocolV2::post_client_banner_exchange() { | |
1676 | ldout(cct, 20) << __func__ << dendl; | |
1677 | ||
1678 | state = AUTH_CONNECTING; | |
1679 | ||
1680 | return send_auth_request(); | |
1681 | } | |
1682 | ||
1683 | CtPtr ProtocolV2::send_auth_request(std::vector<uint32_t> &allowed_methods) { | |
9f95a23c | 1684 | ceph_assert(messenger->auth_client); |
11fdf7f2 TL |
1685 | ldout(cct, 20) << __func__ << " peer_type " << (int)connection->peer_type |
1686 | << " auth_client " << messenger->auth_client << dendl; | |
11fdf7f2 | 1687 | |
f67539c2 TL |
1688 | ceph::bufferlist bl; |
1689 | std::vector<uint32_t> preferred_modes; | |
11fdf7f2 TL |
1690 | auto am = auth_meta; |
1691 | connection->lock.unlock(); | |
1692 | int r = messenger->auth_client->get_auth_request( | |
1693 | connection, am.get(), | |
1694 | &am->auth_method, &preferred_modes, &bl); | |
1695 | connection->lock.lock(); | |
1696 | if (state != AUTH_CONNECTING) { | |
1697 | ldout(cct, 1) << __func__ << " state changed!" << dendl; | |
1698 | return _fault(); | |
1699 | } | |
1700 | if (r < 0) { | |
1701 | ldout(cct, 0) << __func__ << " get_initial_auth_request returned " << r | |
1702 | << dendl; | |
1703 | stop(); | |
1704 | connection->dispatch_queue->queue_reset(connection); | |
1705 | return nullptr; | |
1706 | } | |
1707 | ||
1708 | INTERCEPT(9); | |
1709 | ||
1710 | auto frame = AuthRequestFrame::Encode(auth_meta->auth_method, preferred_modes, | |
1711 | bl); | |
1712 | return WRITE(frame, "auth request", read_frame); | |
1713 | } | |
1714 | ||
1715 | CtPtr ProtocolV2::handle_auth_bad_method(ceph::bufferlist &payload) { | |
1716 | ldout(cct, 20) << __func__ | |
1717 | << " payload.length()=" << payload.length() << dendl; | |
1718 | ||
1719 | if (state != AUTH_CONNECTING) { | |
1720 | lderr(cct) << __func__ << " not in auth connect state!" << dendl; | |
1721 | return _fault(); | |
1722 | } | |
1723 | ||
1724 | auto bad_method = AuthBadMethodFrame::Decode(payload); | |
1725 | ldout(cct, 1) << __func__ << " method=" << bad_method.method() | |
1726 | << " result " << cpp_strerror(bad_method.result()) | |
1727 | << ", allowed methods=" << bad_method.allowed_methods() | |
1728 | << ", allowed modes=" << bad_method.allowed_modes() | |
1729 | << dendl; | |
1730 | ceph_assert(messenger->auth_client); | |
1731 | auto am = auth_meta; | |
1732 | connection->lock.unlock(); | |
1733 | int r = messenger->auth_client->handle_auth_bad_method( | |
1734 | connection, | |
1735 | am.get(), | |
1736 | bad_method.method(), bad_method.result(), | |
1737 | bad_method.allowed_methods(), | |
1738 | bad_method.allowed_modes()); | |
1739 | connection->lock.lock(); | |
1740 | if (state != AUTH_CONNECTING || r < 0) { | |
1741 | return _fault(); | |
1742 | } | |
1743 | return send_auth_request(bad_method.allowed_methods()); | |
1744 | } | |
1745 | ||
1746 | CtPtr ProtocolV2::handle_auth_reply_more(ceph::bufferlist &payload) | |
1747 | { | |
1748 | ldout(cct, 20) << __func__ | |
1749 | << " payload.length()=" << payload.length() << dendl; | |
1750 | ||
1751 | if (state != AUTH_CONNECTING) { | |
1752 | lderr(cct) << __func__ << " not in auth connect state!" << dendl; | |
1753 | return _fault(); | |
1754 | } | |
1755 | ||
1756 | auto auth_more = AuthReplyMoreFrame::Decode(payload); | |
1757 | ldout(cct, 5) << __func__ | |
1758 | << " auth reply more len=" << auth_more.auth_payload().length() | |
1759 | << dendl; | |
1760 | ceph_assert(messenger->auth_client); | |
1761 | ceph::bufferlist reply; | |
1762 | auto am = auth_meta; | |
1763 | connection->lock.unlock(); | |
1764 | int r = messenger->auth_client->handle_auth_reply_more( | |
1765 | connection, am.get(), auth_more.auth_payload(), &reply); | |
1766 | connection->lock.lock(); | |
1767 | if (state != AUTH_CONNECTING) { | |
1768 | ldout(cct, 1) << __func__ << " state changed!" << dendl; | |
1769 | return _fault(); | |
1770 | } | |
1771 | if (r < 0) { | |
1772 | lderr(cct) << __func__ << " auth_client handle_auth_reply_more returned " | |
1773 | << r << dendl; | |
1774 | return _fault(); | |
1775 | } | |
1776 | auto more_reply = AuthRequestMoreFrame::Encode(reply); | |
1777 | return WRITE(more_reply, "auth request more", read_frame); | |
1778 | } | |
1779 | ||
1780 | CtPtr ProtocolV2::handle_auth_done(ceph::bufferlist &payload) | |
1781 | { | |
1782 | ldout(cct, 20) << __func__ | |
1783 | << " payload.length()=" << payload.length() << dendl; | |
1784 | ||
1785 | if (state != AUTH_CONNECTING) { | |
1786 | lderr(cct) << __func__ << " not in auth connect state!" << dendl; | |
1787 | return _fault(); | |
1788 | } | |
1789 | ||
1790 | auto auth_done = AuthDoneFrame::Decode(payload); | |
1791 | ||
1792 | ceph_assert(messenger->auth_client); | |
1793 | auto am = auth_meta; | |
1794 | connection->lock.unlock(); | |
1795 | int r = messenger->auth_client->handle_auth_done( | |
1796 | connection, | |
1797 | am.get(), | |
1798 | auth_done.global_id(), | |
1799 | auth_done.con_mode(), | |
1800 | auth_done.auth_payload(), | |
1801 | &am->session_key, | |
1802 | &am->connection_secret); | |
1803 | connection->lock.lock(); | |
1804 | if (state != AUTH_CONNECTING) { | |
1805 | ldout(cct, 1) << __func__ << " state changed!" << dendl; | |
1806 | return _fault(); | |
1807 | } | |
1808 | if (r < 0) { | |
1809 | return _fault(); | |
1810 | } | |
1811 | auth_meta->con_mode = auth_done.con_mode(); | |
f6b5b4d7 TL |
1812 | bool is_rev1 = HAVE_MSGR2_FEATURE(peer_supported_features, REVISION_1); |
1813 | session_stream_handlers = ceph::crypto::onwire::rxtx_t::create_handler_pair( | |
1814 | cct, *auth_meta, /*new_nonce_format=*/is_rev1, /*crossed=*/false); | |
11fdf7f2 TL |
1815 | |
1816 | state = AUTH_CONNECTING_SIGN; | |
1817 | ||
1818 | const auto sig = auth_meta->session_key.empty() ? sha256_digest_t() : | |
1819 | auth_meta->session_key.hmac_sha256(cct, pre_auth.rxbuf); | |
1820 | auto sig_frame = AuthSignatureFrame::Encode(sig); | |
1821 | pre_auth.enabled = false; | |
1822 | pre_auth.rxbuf.clear(); | |
1823 | return WRITE(sig_frame, "auth signature", read_frame); | |
1824 | } | |
1825 | ||
1826 | CtPtr ProtocolV2::finish_client_auth() { | |
1827 | if (!server_cookie) { | |
1828 | ceph_assert(connect_seq == 0); | |
1829 | state = SESSION_CONNECTING; | |
1830 | return send_client_ident(); | |
1831 | } else { // reconnecting to previous session | |
1832 | state = SESSION_RECONNECTING; | |
1833 | ceph_assert(connect_seq > 0); | |
1834 | return send_reconnect(); | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | CtPtr ProtocolV2::send_client_ident() { | |
1839 | ldout(cct, 20) << __func__ << dendl; | |
1840 | ||
1841 | if (!connection->policy.lossy && !client_cookie) { | |
1842 | client_cookie = ceph::util::generate_random_number<uint64_t>(1, -1ll); | |
1843 | } | |
1844 | ||
1845 | uint64_t flags = 0; | |
1846 | if (connection->policy.lossy) { | |
1847 | flags |= CEPH_MSG_CONNECT_LOSSY; | |
1848 | } | |
1849 | ||
11fdf7f2 TL |
1850 | auto client_ident = ClientIdentFrame::Encode( |
1851 | messenger->get_myaddrs(), | |
1852 | connection->target_addr, | |
1853 | messenger->get_myname().num(), | |
1854 | global_seq, | |
1855 | connection->policy.features_supported, | |
1856 | connection->policy.features_required | msgr2_required, | |
1857 | flags, | |
1858 | client_cookie); | |
1859 | ||
1860 | ldout(cct, 5) << __func__ << " sending identification: " | |
1861 | << "addrs=" << messenger->get_myaddrs() | |
1862 | << " target=" << connection->target_addr | |
1863 | << " gid=" << messenger->get_myname().num() | |
1864 | << " global_seq=" << global_seq | |
1865 | << " features_supported=" << std::hex | |
1866 | << connection->policy.features_supported | |
1867 | << " features_required=" | |
1868 | << (connection->policy.features_required | msgr2_required) | |
1869 | << " flags=" << flags | |
1870 | << " cookie=" << client_cookie << std::dec << dendl; | |
1871 | ||
1872 | INTERCEPT(11); | |
1873 | ||
1874 | return WRITE(client_ident, "client ident", read_frame); | |
1875 | } | |
1876 | ||
1877 | CtPtr ProtocolV2::send_reconnect() { | |
1878 | ldout(cct, 20) << __func__ << dendl; | |
1879 | ||
1880 | auto reconnect = ReconnectFrame::Encode(messenger->get_myaddrs(), | |
1881 | client_cookie, | |
1882 | server_cookie, | |
1883 | global_seq, | |
1884 | connect_seq, | |
1885 | in_seq); | |
1886 | ||
1887 | ldout(cct, 5) << __func__ << " reconnect to session: client_cookie=" | |
1888 | << std::hex << client_cookie << " server_cookie=" | |
1889 | << server_cookie << std::dec | |
1890 | << " gs=" << global_seq << " cs=" << connect_seq | |
1891 | << " ms=" << in_seq << dendl; | |
1892 | ||
1893 | INTERCEPT(13); | |
1894 | ||
1895 | return WRITE(reconnect, "reconnect", read_frame); | |
1896 | } | |
1897 | ||
1898 | CtPtr ProtocolV2::handle_ident_missing_features(ceph::bufferlist &payload) | |
1899 | { | |
1900 | ldout(cct, 20) << __func__ | |
1901 | << " payload.length()=" << payload.length() << dendl; | |
1902 | ||
1903 | if (state != SESSION_CONNECTING) { | |
1904 | lderr(cct) << __func__ << " not in session connect state!" << dendl; | |
1905 | return _fault(); | |
1906 | } | |
1907 | ||
1908 | auto ident_missing = | |
1909 | IdentMissingFeaturesFrame::Decode(payload); | |
1910 | lderr(cct) << __func__ | |
1911 | << " client does not support all server features: " << std::hex | |
1912 | << ident_missing.features() << std::dec << dendl; | |
1913 | ||
1914 | return _fault(); | |
1915 | } | |
1916 | ||
1917 | CtPtr ProtocolV2::handle_session_reset(ceph::bufferlist &payload) | |
1918 | { | |
1919 | ldout(cct, 20) << __func__ | |
1920 | << " payload.length()=" << payload.length() << dendl; | |
1921 | ||
1922 | if (state != SESSION_RECONNECTING) { | |
1923 | lderr(cct) << __func__ << " not in session reconnect state!" << dendl; | |
1924 | return _fault(); | |
1925 | } | |
1926 | ||
1927 | auto reset = ResetFrame::Decode(payload); | |
1928 | ||
1929 | ldout(cct, 1) << __func__ << " received session reset full=" << reset.full() | |
1930 | << dendl; | |
1931 | if (reset.full()) { | |
1932 | reset_session(); | |
1933 | } else { | |
1934 | server_cookie = 0; | |
1935 | connect_seq = 0; | |
1936 | in_seq = 0; | |
1937 | } | |
1938 | ||
1939 | state = SESSION_CONNECTING; | |
1940 | return send_client_ident(); | |
1941 | } | |
1942 | ||
1943 | CtPtr ProtocolV2::handle_session_retry(ceph::bufferlist &payload) | |
1944 | { | |
1945 | ldout(cct, 20) << __func__ | |
1946 | << " payload.length()=" << payload.length() << dendl; | |
1947 | ||
1948 | if (state != SESSION_RECONNECTING) { | |
1949 | lderr(cct) << __func__ << " not in session reconnect state!" << dendl; | |
1950 | return _fault(); | |
1951 | } | |
1952 | ||
1953 | auto retry = RetryFrame::Decode(payload); | |
1954 | connect_seq = retry.connect_seq() + 1; | |
1955 | ||
1956 | ldout(cct, 1) << __func__ | |
1957 | << " received session retry connect_seq=" << retry.connect_seq() | |
1958 | << ", inc to cs=" << connect_seq << dendl; | |
1959 | ||
1960 | return send_reconnect(); | |
1961 | } | |
1962 | ||
1963 | CtPtr ProtocolV2::handle_session_retry_global(ceph::bufferlist &payload) | |
1964 | { | |
1965 | ldout(cct, 20) << __func__ | |
1966 | << " payload.length()=" << payload.length() << dendl; | |
1967 | ||
1968 | if (state != SESSION_RECONNECTING) { | |
1969 | lderr(cct) << __func__ << " not in session reconnect state!" << dendl; | |
1970 | return _fault(); | |
1971 | } | |
1972 | ||
1973 | auto retry = RetryGlobalFrame::Decode(payload); | |
1974 | global_seq = messenger->get_global_seq(retry.global_seq()); | |
1975 | ||
1976 | ldout(cct, 1) << __func__ << " received session retry global global_seq=" | |
1977 | << retry.global_seq() << ", choose new gs=" << global_seq | |
1978 | << dendl; | |
1979 | ||
1980 | return send_reconnect(); | |
1981 | } | |
1982 | ||
1983 | CtPtr ProtocolV2::handle_wait(ceph::bufferlist &payload) { | |
1984 | ldout(cct, 20) << __func__ | |
1985 | << " received WAIT (connection race)" | |
1986 | << " payload.length()=" << payload.length() | |
1987 | << dendl; | |
1988 | ||
1989 | if (state != SESSION_CONNECTING && state != SESSION_RECONNECTING) { | |
1990 | lderr(cct) << __func__ << " not in session (re)connect state!" << dendl; | |
1991 | return _fault(); | |
1992 | } | |
1993 | ||
1994 | state = WAIT; | |
1995 | WaitFrame::Decode(payload); | |
1996 | return _fault(); | |
1997 | } | |
1998 | ||
1999 | CtPtr ProtocolV2::handle_reconnect_ok(ceph::bufferlist &payload) | |
2000 | { | |
2001 | ldout(cct, 20) << __func__ | |
2002 | << " payload.length()=" << payload.length() << dendl; | |
2003 | ||
2004 | if (state != SESSION_RECONNECTING) { | |
2005 | lderr(cct) << __func__ << " not in session reconnect state!" << dendl; | |
2006 | return _fault(); | |
2007 | } | |
2008 | ||
2009 | auto reconnect_ok = ReconnectOkFrame::Decode(payload); | |
2010 | ldout(cct, 5) << __func__ | |
2011 | << " reconnect accepted: sms=" << reconnect_ok.msg_seq() | |
2012 | << dendl; | |
2013 | ||
2014 | out_seq = discard_requeued_up_to(out_seq, reconnect_ok.msg_seq()); | |
2015 | ||
2016 | backoff = utime_t(); | |
2017 | ldout(cct, 10) << __func__ << " reconnect success " << connect_seq | |
2018 | << ", lossy = " << connection->policy.lossy << ", features " | |
2019 | << connection->get_features() << dendl; | |
2020 | ||
2021 | if (connection->delay_state) { | |
2022 | ceph_assert(connection->delay_state->ready()); | |
2023 | } | |
2024 | ||
2025 | connection->dispatch_queue->queue_connect(connection); | |
2026 | messenger->ms_deliver_handle_fast_connect(connection); | |
2027 | ||
2028 | return ready(); | |
2029 | } | |
2030 | ||
2031 | CtPtr ProtocolV2::handle_server_ident(ceph::bufferlist &payload) | |
2032 | { | |
2033 | ldout(cct, 20) << __func__ | |
2034 | << " payload.length()=" << payload.length() << dendl; | |
2035 | ||
2036 | if (state != SESSION_CONNECTING) { | |
2037 | lderr(cct) << __func__ << " not in session connect state!" << dendl; | |
2038 | return _fault(); | |
2039 | } | |
2040 | ||
2041 | auto server_ident = ServerIdentFrame::Decode(payload); | |
2042 | ldout(cct, 5) << __func__ << " received server identification:" | |
2043 | << " addrs=" << server_ident.addrs() | |
2044 | << " gid=" << server_ident.gid() | |
2045 | << " global_seq=" << server_ident.global_seq() | |
2046 | << " features_supported=" << std::hex | |
2047 | << server_ident.supported_features() | |
2048 | << " features_required=" << server_ident.required_features() | |
f6b5b4d7 TL |
2049 | << " flags=" << server_ident.flags() |
2050 | << " cookie=" << server_ident.cookie() << std::dec << dendl; | |
11fdf7f2 TL |
2051 | |
2052 | // is this who we intended to talk to? | |
2053 | // be a bit forgiving here, since we may be connecting based on addresses parsed out | |
2054 | // of mon_host or something. | |
2055 | if (!server_ident.addrs().contains(connection->target_addr)) { | |
2056 | ldout(cct,1) << __func__ << " peer identifies as " << server_ident.addrs() | |
2057 | << ", does not include " << connection->target_addr << dendl; | |
2058 | return _fault(); | |
2059 | } | |
2060 | ||
2061 | server_cookie = server_ident.cookie(); | |
2062 | ||
2063 | connection->set_peer_addrs(server_ident.addrs()); | |
2064 | peer_name = entity_name_t(connection->get_peer_type(), server_ident.gid()); | |
2065 | connection->set_features(server_ident.supported_features() & | |
2066 | connection->policy.features_supported); | |
2067 | peer_global_seq = server_ident.global_seq(); | |
2068 | ||
2069 | connection->policy.lossy = server_ident.flags() & CEPH_MSG_CONNECT_LOSSY; | |
2070 | ||
2071 | backoff = utime_t(); | |
2072 | ldout(cct, 10) << __func__ << " connect success " << connect_seq | |
2073 | << ", lossy = " << connection->policy.lossy << ", features " | |
2074 | << connection->get_features() << dendl; | |
2075 | ||
2076 | if (connection->delay_state) { | |
2077 | ceph_assert(connection->delay_state->ready()); | |
2078 | } | |
2079 | ||
2080 | connection->dispatch_queue->queue_connect(connection); | |
2081 | messenger->ms_deliver_handle_fast_connect(connection); | |
2082 | ||
2083 | return ready(); | |
2084 | } | |
2085 | ||
2086 | /* Server Protocol Methods */ | |
2087 | ||
2088 | CtPtr ProtocolV2::start_server_banner_exchange() { | |
2089 | ldout(cct, 20) << __func__ << dendl; | |
2090 | ||
2091 | INTERCEPT(2); | |
2092 | ||
2093 | state = BANNER_ACCEPTING; | |
2094 | ||
2095 | return _banner_exchange(CONTINUATION(post_server_banner_exchange)); | |
2096 | } | |
2097 | ||
2098 | CtPtr ProtocolV2::post_server_banner_exchange() { | |
2099 | ldout(cct, 20) << __func__ << dendl; | |
2100 | ||
2101 | state = AUTH_ACCEPTING; | |
2102 | ||
2103 | return CONTINUE(read_frame); | |
2104 | } | |
2105 | ||
2106 | CtPtr ProtocolV2::handle_auth_request(ceph::bufferlist &payload) { | |
2107 | ldout(cct, 20) << __func__ << " payload.length()=" << payload.length() | |
2108 | << dendl; | |
2109 | ||
2110 | if (state != AUTH_ACCEPTING) { | |
2111 | lderr(cct) << __func__ << " not in auth accept state!" << dendl; | |
2112 | return _fault(); | |
2113 | } | |
2114 | ||
2115 | auto request = AuthRequestFrame::Decode(payload); | |
2116 | ldout(cct, 10) << __func__ << " AuthRequest(method=" << request.method() | |
2117 | << ", preferred_modes=" << request.preferred_modes() | |
2118 | << ", payload_len=" << request.auth_payload().length() << ")" | |
2119 | << dendl; | |
2120 | auth_meta->auth_method = request.method(); | |
2121 | auth_meta->con_mode = messenger->auth_server->pick_con_mode( | |
2122 | connection->get_peer_type(), auth_meta->auth_method, | |
2123 | request.preferred_modes()); | |
2124 | if (auth_meta->con_mode == CEPH_CON_MODE_UNKNOWN) { | |
2125 | return _auth_bad_method(-EOPNOTSUPP); | |
2126 | } | |
2127 | return _handle_auth_request(request.auth_payload(), false); | |
2128 | } | |
2129 | ||
2130 | CtPtr ProtocolV2::_auth_bad_method(int r) | |
2131 | { | |
2132 | ceph_assert(r < 0); | |
2133 | std::vector<uint32_t> allowed_methods; | |
2134 | std::vector<uint32_t> allowed_modes; | |
2135 | messenger->auth_server->get_supported_auth_methods( | |
2136 | connection->get_peer_type(), &allowed_methods, &allowed_modes); | |
2137 | ldout(cct, 1) << __func__ << " auth_method " << auth_meta->auth_method | |
2138 | << " r " << cpp_strerror(r) | |
2139 | << ", allowed_methods " << allowed_methods | |
2140 | << ", allowed_modes " << allowed_modes | |
2141 | << dendl; | |
2142 | auto bad_method = AuthBadMethodFrame::Encode(auth_meta->auth_method, r, | |
2143 | allowed_methods, allowed_modes); | |
2144 | return WRITE(bad_method, "bad auth method", read_frame); | |
2145 | } | |
2146 | ||
f67539c2 | 2147 | CtPtr ProtocolV2::_handle_auth_request(ceph::bufferlist& auth_payload, bool more) |
11fdf7f2 TL |
2148 | { |
2149 | if (!messenger->auth_server) { | |
2150 | return _fault(); | |
2151 | } | |
f67539c2 | 2152 | ceph::bufferlist reply; |
11fdf7f2 TL |
2153 | auto am = auth_meta; |
2154 | connection->lock.unlock(); | |
2155 | int r = messenger->auth_server->handle_auth_request( | |
2156 | connection, am.get(), | |
2157 | more, am->auth_method, auth_payload, | |
2158 | &reply); | |
2159 | connection->lock.lock(); | |
2160 | if (state != AUTH_ACCEPTING && state != AUTH_ACCEPTING_MORE) { | |
2161 | ldout(cct, 1) << __func__ | |
2162 | << " state changed while accept, it must be mark_down" | |
2163 | << dendl; | |
2164 | ceph_assert(state == CLOSED); | |
2165 | return _fault(); | |
2166 | } | |
2167 | if (r == 1) { | |
2168 | INTERCEPT(10); | |
2169 | state = AUTH_ACCEPTING_SIGN; | |
2170 | ||
2171 | auto auth_done = AuthDoneFrame::Encode(connection->peer_global_id, | |
2172 | auth_meta->con_mode, | |
2173 | reply); | |
2174 | return WRITE(auth_done, "auth done", finish_auth); | |
2175 | } else if (r == 0) { | |
2176 | state = AUTH_ACCEPTING_MORE; | |
2177 | ||
2178 | auto more = AuthReplyMoreFrame::Encode(reply); | |
2179 | return WRITE(more, "auth reply more", read_frame); | |
2180 | } else if (r == -EBUSY) { | |
2181 | // kick the client and maybe they'll come back later | |
2182 | return _fault(); | |
2183 | } else { | |
2184 | return _auth_bad_method(r); | |
2185 | } | |
2186 | } | |
2187 | ||
2188 | CtPtr ProtocolV2::finish_auth() | |
2189 | { | |
2190 | ceph_assert(auth_meta); | |
2191 | // TODO: having a possibility to check whether we're server or client could | |
2192 | // allow reusing finish_auth(). | |
f6b5b4d7 TL |
2193 | bool is_rev1 = HAVE_MSGR2_FEATURE(peer_supported_features, REVISION_1); |
2194 | session_stream_handlers = ceph::crypto::onwire::rxtx_t::create_handler_pair( | |
2195 | cct, *auth_meta, /*new_nonce_format=*/is_rev1, /*crossed=*/true); | |
11fdf7f2 TL |
2196 | |
2197 | const auto sig = auth_meta->session_key.empty() ? sha256_digest_t() : | |
2198 | auth_meta->session_key.hmac_sha256(cct, pre_auth.rxbuf); | |
2199 | auto sig_frame = AuthSignatureFrame::Encode(sig); | |
2200 | pre_auth.enabled = false; | |
2201 | pre_auth.rxbuf.clear(); | |
2202 | return WRITE(sig_frame, "auth signature", read_frame); | |
2203 | } | |
2204 | ||
2205 | CtPtr ProtocolV2::handle_auth_request_more(ceph::bufferlist &payload) | |
2206 | { | |
2207 | ldout(cct, 20) << __func__ | |
2208 | << " payload.length()=" << payload.length() << dendl; | |
2209 | ||
2210 | if (state != AUTH_ACCEPTING_MORE) { | |
2211 | lderr(cct) << __func__ << " not in auth accept more state!" << dendl; | |
2212 | return _fault(); | |
2213 | } | |
2214 | ||
2215 | auto auth_more = AuthRequestMoreFrame::Decode(payload); | |
2216 | return _handle_auth_request(auth_more.auth_payload(), true); | |
2217 | } | |
2218 | ||
2219 | CtPtr ProtocolV2::handle_auth_signature(ceph::bufferlist &payload) | |
2220 | { | |
2221 | ldout(cct, 20) << __func__ | |
2222 | << " payload.length()=" << payload.length() << dendl; | |
2223 | ||
2224 | if (state != AUTH_ACCEPTING_SIGN && state != AUTH_CONNECTING_SIGN) { | |
2225 | lderr(cct) << __func__ | |
2226 | << " pre-auth verification signature seen in wrong state!" | |
2227 | << dendl; | |
2228 | return _fault(); | |
2229 | } | |
2230 | ||
2231 | auto sig_frame = AuthSignatureFrame::Decode(payload); | |
2232 | ||
2233 | const auto actual_tx_sig = auth_meta->session_key.empty() ? | |
2234 | sha256_digest_t() : auth_meta->session_key.hmac_sha256(cct, pre_auth.txbuf); | |
2235 | if (sig_frame.signature() != actual_tx_sig) { | |
2236 | ldout(cct, 2) << __func__ << " pre-auth signature mismatch" | |
2237 | << " actual_tx_sig=" << actual_tx_sig | |
2238 | << " sig_frame.signature()=" << sig_frame.signature() | |
2239 | << dendl; | |
2240 | return _fault(); | |
2241 | } else { | |
2242 | ldout(cct, 20) << __func__ << " pre-auth signature success" | |
2243 | << " sig_frame.signature()=" << sig_frame.signature() | |
2244 | << dendl; | |
2245 | pre_auth.txbuf.clear(); | |
2246 | } | |
2247 | ||
2248 | if (state == AUTH_ACCEPTING_SIGN) { | |
2249 | // server had sent AuthDone and client responded with correct pre-auth | |
2250 | // signature. we can start accepting new sessions/reconnects. | |
2251 | state = SESSION_ACCEPTING; | |
2252 | return CONTINUE(read_frame); | |
2253 | } else if (state == AUTH_CONNECTING_SIGN) { | |
2254 | // this happened at client side | |
2255 | return finish_client_auth(); | |
2256 | } else { | |
9f95a23c | 2257 | ceph_abort("state corruption"); |
11fdf7f2 TL |
2258 | } |
2259 | } | |
2260 | ||
2261 | CtPtr ProtocolV2::handle_client_ident(ceph::bufferlist &payload) | |
2262 | { | |
2263 | ldout(cct, 20) << __func__ | |
2264 | << " payload.length()=" << payload.length() << dendl; | |
2265 | ||
2266 | if (state != SESSION_ACCEPTING) { | |
2267 | lderr(cct) << __func__ << " not in session accept state!" << dendl; | |
2268 | return _fault(); | |
2269 | } | |
2270 | ||
2271 | auto client_ident = ClientIdentFrame::Decode(payload); | |
2272 | ||
2273 | ldout(cct, 5) << __func__ << " received client identification:" | |
2274 | << " addrs=" << client_ident.addrs() | |
2275 | << " target=" << client_ident.target_addr() | |
2276 | << " gid=" << client_ident.gid() | |
2277 | << " global_seq=" << client_ident.global_seq() | |
2278 | << " features_supported=" << std::hex | |
2279 | << client_ident.supported_features() | |
2280 | << " features_required=" << client_ident.required_features() | |
2281 | << " flags=" << client_ident.flags() | |
2282 | << " cookie=" << client_ident.cookie() << std::dec << dendl; | |
2283 | ||
2284 | if (client_ident.addrs().empty() || | |
2285 | client_ident.addrs().front() == entity_addr_t()) { | |
2286 | ldout(cct,5) << __func__ << " oops, client_ident.addrs() is empty" << dendl; | |
2287 | return _fault(); // a v2 peer should never do this | |
2288 | } | |
2289 | if (!messenger->get_myaddrs().contains(client_ident.target_addr())) { | |
2290 | ldout(cct,5) << __func__ << " peer is trying to reach " | |
2291 | << client_ident.target_addr() | |
2292 | << " which is not us (" << messenger->get_myaddrs() << ")" | |
2293 | << dendl; | |
2294 | return _fault(); | |
2295 | } | |
2296 | ||
2297 | connection->set_peer_addrs(client_ident.addrs()); | |
2298 | connection->target_addr = connection->_infer_target_addr(client_ident.addrs()); | |
2299 | ||
2300 | peer_name = entity_name_t(connection->get_peer_type(), client_ident.gid()); | |
2301 | connection->set_peer_id(client_ident.gid()); | |
2302 | ||
2303 | client_cookie = client_ident.cookie(); | |
2304 | ||
2305 | uint64_t feat_missing = | |
2306 | (connection->policy.features_required | msgr2_required) & | |
2307 | ~(uint64_t)client_ident.supported_features(); | |
2308 | if (feat_missing) { | |
2309 | ldout(cct, 1) << __func__ << " peer missing required features " << std::hex | |
2310 | << feat_missing << std::dec << dendl; | |
2311 | auto ident_missing_features = | |
2312 | IdentMissingFeaturesFrame::Encode(feat_missing); | |
2313 | ||
2314 | return WRITE(ident_missing_features, "ident missing features", read_frame); | |
2315 | } | |
2316 | ||
2317 | connection_features = | |
2318 | client_ident.supported_features() & connection->policy.features_supported; | |
2319 | ||
2320 | peer_global_seq = client_ident.global_seq(); | |
2321 | ||
9f95a23c TL |
2322 | if (connection->policy.server && |
2323 | connection->policy.lossy && | |
2324 | !connection->policy.register_lossy_clients) { | |
2325 | // incoming lossy client, no need to register this connection | |
2326 | } else { | |
2327 | // Looks good so far, let's check if there is already an existing connection | |
2328 | // to this peer. | |
2329 | connection->lock.unlock(); | |
2330 | AsyncConnectionRef existing = messenger->lookup_conn( | |
2331 | *connection->peer_addrs); | |
2332 | ||
2333 | if (existing && | |
2334 | existing->protocol->proto_type != 2) { | |
2335 | ldout(cct,1) << __func__ << " existing " << existing << " proto " | |
2336 | << existing->protocol.get() << " version is " | |
2337 | << existing->protocol->proto_type << ", marking down" | |
2338 | << dendl; | |
2339 | existing->mark_down(); | |
2340 | existing = nullptr; | |
2341 | } | |
11fdf7f2 | 2342 | |
9f95a23c | 2343 | connection->inject_delay(); |
11fdf7f2 | 2344 | |
9f95a23c TL |
2345 | connection->lock.lock(); |
2346 | if (state != SESSION_ACCEPTING) { | |
2347 | ldout(cct, 1) << __func__ | |
2348 | << " state changed while accept, it must be mark_down" | |
2349 | << dendl; | |
2350 | ceph_assert(state == CLOSED); | |
2351 | return _fault(); | |
2352 | } | |
11fdf7f2 | 2353 | |
9f95a23c TL |
2354 | if (existing) { |
2355 | return handle_existing_connection(existing); | |
2356 | } | |
11fdf7f2 TL |
2357 | } |
2358 | ||
2359 | // if everything is OK reply with server identification | |
2360 | return send_server_ident(); | |
2361 | } | |
2362 | ||
2363 | CtPtr ProtocolV2::handle_reconnect(ceph::bufferlist &payload) | |
2364 | { | |
2365 | ldout(cct, 20) << __func__ | |
2366 | << " payload.length()=" << payload.length() << dendl; | |
2367 | ||
2368 | if (state != SESSION_ACCEPTING) { | |
2369 | lderr(cct) << __func__ << " not in session accept state!" << dendl; | |
2370 | return _fault(); | |
2371 | } | |
2372 | ||
2373 | auto reconnect = ReconnectFrame::Decode(payload); | |
2374 | ||
2375 | ldout(cct, 5) << __func__ | |
2376 | << " received reconnect:" | |
2377 | << " client_cookie=" << std::hex << reconnect.client_cookie() | |
2378 | << " server_cookie=" << reconnect.server_cookie() << std::dec | |
2379 | << " gs=" << reconnect.global_seq() | |
2380 | << " cs=" << reconnect.connect_seq() | |
2381 | << " ms=" << reconnect.msg_seq() | |
2382 | << dendl; | |
2383 | ||
2384 | // Should we check if one of the ident.addrs match connection->target_addr | |
2385 | // as we do in ProtocolV1? | |
2386 | connection->set_peer_addrs(reconnect.addrs()); | |
2387 | connection->target_addr = connection->_infer_target_addr(reconnect.addrs()); | |
2388 | peer_global_seq = reconnect.global_seq(); | |
2389 | ||
2390 | connection->lock.unlock(); | |
2391 | AsyncConnectionRef existing = messenger->lookup_conn(*connection->peer_addrs); | |
2392 | ||
2393 | if (existing && | |
2394 | existing->protocol->proto_type != 2) { | |
2395 | ldout(cct,1) << __func__ << " existing " << existing << " proto " | |
2396 | << existing->protocol.get() << " version is " | |
2397 | << existing->protocol->proto_type << ", marking down" << dendl; | |
2398 | existing->mark_down(); | |
2399 | existing = nullptr; | |
2400 | } | |
2401 | ||
2402 | connection->inject_delay(); | |
2403 | ||
2404 | connection->lock.lock(); | |
2405 | if (state != SESSION_ACCEPTING) { | |
2406 | ldout(cct, 1) << __func__ | |
2407 | << " state changed while accept, it must be mark_down" | |
2408 | << dendl; | |
2409 | ceph_assert(state == CLOSED); | |
2410 | return _fault(); | |
2411 | } | |
2412 | ||
2413 | if (!existing) { | |
2414 | // there is no existing connection therefore cannot reconnect to previous | |
2415 | // session | |
2416 | ldout(cct, 0) << __func__ | |
2417 | << " no existing connection exists, reseting client" << dendl; | |
2418 | auto reset = ResetFrame::Encode(true); | |
2419 | return WRITE(reset, "session reset", read_frame); | |
2420 | } | |
2421 | ||
2422 | std::lock_guard<std::mutex> l(existing->lock); | |
2423 | ||
2424 | ProtocolV2 *exproto = dynamic_cast<ProtocolV2 *>(existing->protocol.get()); | |
2425 | if (!exproto) { | |
2426 | ldout(cct, 1) << __func__ << " existing=" << existing << dendl; | |
2427 | ceph_assert(false); | |
2428 | } | |
2429 | ||
2430 | if (exproto->state == CLOSED) { | |
2431 | ldout(cct, 5) << __func__ << " existing " << existing | |
2432 | << " already closed. Reseting client" << dendl; | |
2433 | auto reset = ResetFrame::Encode(true); | |
2434 | return WRITE(reset, "session reset", read_frame); | |
2435 | } | |
2436 | ||
2437 | if (exproto->replacing) { | |
2438 | ldout(cct, 1) << __func__ | |
2439 | << " existing racing replace happened while replacing." | |
2440 | << " existing=" << existing << dendl; | |
2441 | auto retry = RetryGlobalFrame::Encode(exproto->peer_global_seq); | |
2442 | return WRITE(retry, "session retry", read_frame); | |
2443 | } | |
2444 | ||
2445 | if (exproto->client_cookie != reconnect.client_cookie()) { | |
2446 | ldout(cct, 1) << __func__ << " existing=" << existing | |
2447 | << " client cookie mismatch, I must have reseted:" | |
2448 | << " cc=" << std::hex << exproto->client_cookie | |
2449 | << " rcc=" << reconnect.client_cookie() | |
2450 | << ", reseting client." << std::dec | |
2451 | << dendl; | |
2452 | auto reset = ResetFrame::Encode(connection->policy.resetcheck); | |
2453 | return WRITE(reset, "session reset", read_frame); | |
2454 | } else if (exproto->server_cookie == 0) { | |
2455 | // this happens when: | |
2456 | // - a connects to b | |
2457 | // - a sends client_ident | |
2458 | // - b gets client_ident, sends server_ident and sets cookie X | |
2459 | // - connection fault | |
2460 | // - b reconnects to a with cookie X, connect_seq=1 | |
2461 | // - a has cookie==0 | |
2462 | ldout(cct, 1) << __func__ << " I was a client and didn't received the" | |
2463 | << " server_ident. Asking peer to resume session" | |
2464 | << " establishment" << dendl; | |
2465 | auto reset = ResetFrame::Encode(false); | |
2466 | return WRITE(reset, "session reset", read_frame); | |
2467 | } | |
2468 | ||
2469 | if (exproto->peer_global_seq > reconnect.global_seq()) { | |
2470 | ldout(cct, 5) << __func__ | |
2471 | << " stale global_seq: sgs=" << exproto->peer_global_seq | |
2472 | << " cgs=" << reconnect.global_seq() | |
2473 | << ", ask client to retry global" << dendl; | |
2474 | auto retry = RetryGlobalFrame::Encode(exproto->peer_global_seq); | |
2475 | ||
2476 | INTERCEPT(18); | |
2477 | ||
2478 | return WRITE(retry, "session retry", read_frame); | |
2479 | } | |
2480 | ||
2481 | if (exproto->connect_seq > reconnect.connect_seq()) { | |
2482 | ldout(cct, 5) << __func__ | |
2483 | << " stale connect_seq scs=" << exproto->connect_seq | |
2484 | << " ccs=" << reconnect.connect_seq() | |
2485 | << " , ask client to retry" << dendl; | |
2486 | auto retry = RetryFrame::Encode(exproto->connect_seq); | |
2487 | return WRITE(retry, "session retry", read_frame); | |
2488 | } | |
2489 | ||
2490 | if (exproto->connect_seq == reconnect.connect_seq()) { | |
2491 | // reconnect race: both peers are sending reconnect messages | |
2492 | if (existing->peer_addrs->msgr2_addr() > | |
2493 | messenger->get_myaddrs().msgr2_addr() && | |
2494 | !existing->policy.server) { | |
2495 | // the existing connection wins | |
2496 | ldout(cct, 1) | |
2497 | << __func__ | |
2498 | << " reconnect race detected, this connection loses to existing=" | |
2499 | << existing << dendl; | |
2500 | ||
2501 | auto wait = WaitFrame::Encode(); | |
2502 | return WRITE(wait, "wait", read_frame); | |
2503 | } else { | |
2504 | // this connection wins | |
2505 | ldout(cct, 1) << __func__ | |
2506 | << " reconnect race detected, replacing existing=" | |
2507 | << existing << " socket by this connection's socket" | |
2508 | << dendl; | |
2509 | } | |
2510 | } | |
2511 | ||
2512 | ldout(cct, 1) << __func__ << " reconnect to existing=" << existing << dendl; | |
2513 | ||
2514 | reconnecting = true; | |
2515 | ||
2516 | // everything looks good | |
2517 | exproto->connect_seq = reconnect.connect_seq(); | |
2518 | exproto->message_seq = reconnect.msg_seq(); | |
2519 | ||
2520 | return reuse_connection(existing, exproto); | |
2521 | } | |
2522 | ||
9f95a23c | 2523 | CtPtr ProtocolV2::handle_existing_connection(const AsyncConnectionRef& existing) { |
11fdf7f2 TL |
2524 | ldout(cct, 20) << __func__ << " existing=" << existing << dendl; |
2525 | ||
2526 | std::lock_guard<std::mutex> l(existing->lock); | |
2527 | ||
2528 | ProtocolV2 *exproto = dynamic_cast<ProtocolV2 *>(existing->protocol.get()); | |
2529 | if (!exproto) { | |
2530 | ldout(cct, 1) << __func__ << " existing=" << existing << dendl; | |
2531 | ceph_assert(false); | |
2532 | } | |
2533 | ||
2534 | if (exproto->state == CLOSED) { | |
2535 | ldout(cct, 1) << __func__ << " existing " << existing << " already closed." | |
2536 | << dendl; | |
2537 | return send_server_ident(); | |
2538 | } | |
2539 | ||
2540 | if (exproto->replacing) { | |
2541 | ldout(cct, 1) << __func__ | |
2542 | << " existing racing replace happened while replacing." | |
2543 | << " existing=" << existing << dendl; | |
2544 | auto wait = WaitFrame::Encode(); | |
2545 | return WRITE(wait, "wait", read_frame); | |
2546 | } | |
2547 | ||
2548 | if (exproto->peer_global_seq > peer_global_seq) { | |
2549 | ldout(cct, 1) << __func__ << " this is a stale connection, peer_global_seq=" | |
2550 | << peer_global_seq | |
2551 | << " existing->peer_global_seq=" << exproto->peer_global_seq | |
2552 | << ", stopping this connection." << dendl; | |
2553 | stop(); | |
2554 | connection->dispatch_queue->queue_reset(connection); | |
2555 | return nullptr; | |
2556 | } | |
2557 | ||
2558 | if (existing->policy.lossy) { | |
2559 | // existing connection can be thrown out in favor of this one | |
2560 | ldout(cct, 1) | |
2561 | << __func__ << " existing=" << existing | |
2562 | << " is a lossy channel. Stopping existing in favor of this connection" | |
2563 | << dendl; | |
2564 | existing->protocol->stop(); | |
2565 | existing->dispatch_queue->queue_reset(existing.get()); | |
2566 | return send_server_ident(); | |
2567 | } | |
2568 | ||
2569 | if (exproto->server_cookie && exproto->client_cookie && | |
2570 | exproto->client_cookie != client_cookie) { | |
2571 | // Found previous session | |
2572 | // peer has reseted and we're going to reuse the existing connection | |
2573 | // by replacing the communication socket | |
2574 | ldout(cct, 1) << __func__ << " found previous session existing=" << existing | |
2575 | << ", peer must have reseted." << dendl; | |
2576 | if (connection->policy.resetcheck) { | |
2577 | exproto->reset_session(); | |
2578 | } | |
2579 | return reuse_connection(existing, exproto); | |
2580 | } | |
2581 | ||
2582 | if (exproto->client_cookie == client_cookie) { | |
2583 | // session establishment interrupted between client_ident and server_ident, | |
2584 | // continuing... | |
2585 | ldout(cct, 1) << __func__ << " found previous session existing=" << existing | |
2586 | << ", continuing session establishment." << dendl; | |
2587 | return reuse_connection(existing, exproto); | |
2588 | } | |
2589 | ||
2590 | if (exproto->state == READY || exproto->state == STANDBY) { | |
2591 | ldout(cct, 1) << __func__ << " existing=" << existing | |
2592 | << " is READY/STANDBY, lets reuse it" << dendl; | |
2593 | return reuse_connection(existing, exproto); | |
2594 | } | |
2595 | ||
2596 | // Looks like a connection race: server and client are both connecting to | |
2597 | // each other at the same time. | |
2598 | if (connection->peer_addrs->msgr2_addr() < | |
2599 | messenger->get_myaddrs().msgr2_addr() || | |
2600 | existing->policy.server) { | |
2601 | // this connection wins | |
2602 | ldout(cct, 1) << __func__ | |
2603 | << " connection race detected, replacing existing=" | |
2604 | << existing << " socket by this connection's socket" << dendl; | |
2605 | return reuse_connection(existing, exproto); | |
2606 | } else { | |
2607 | // the existing connection wins | |
2608 | ldout(cct, 1) | |
2609 | << __func__ | |
2610 | << " connection race detected, this connection loses to existing=" | |
2611 | << existing << dendl; | |
2612 | ceph_assert(connection->peer_addrs->msgr2_addr() > | |
2613 | messenger->get_myaddrs().msgr2_addr()); | |
2614 | ||
2615 | // make sure we follow through with opening the existing | |
2616 | // connection (if it isn't yet open) since we know the peer | |
2617 | // has something to send to us. | |
2618 | existing->send_keepalive(); | |
2619 | auto wait = WaitFrame::Encode(); | |
2620 | return WRITE(wait, "wait", read_frame); | |
2621 | } | |
2622 | } | |
2623 | ||
9f95a23c | 2624 | CtPtr ProtocolV2::reuse_connection(const AsyncConnectionRef& existing, |
11fdf7f2 TL |
2625 | ProtocolV2 *exproto) { |
2626 | ldout(cct, 20) << __func__ << " existing=" << existing | |
2627 | << " reconnect=" << reconnecting << dendl; | |
2628 | ||
2629 | connection->inject_delay(); | |
2630 | ||
2631 | std::lock_guard<std::mutex> l(existing->write_lock); | |
2632 | ||
2633 | connection->center->delete_file_event(connection->cs.fd(), | |
2634 | EVENT_READABLE | EVENT_WRITABLE); | |
2635 | ||
2636 | if (existing->delay_state) { | |
2637 | existing->delay_state->flush(); | |
2638 | ceph_assert(!connection->delay_state); | |
2639 | } | |
2640 | exproto->reset_recv_state(); | |
2641 | exproto->pre_auth.enabled = false; | |
2642 | ||
2643 | if (!reconnecting) { | |
f6b5b4d7 TL |
2644 | exproto->peer_supported_features = peer_supported_features; |
2645 | exproto->tx_frame_asm.set_is_rev1(tx_frame_asm.get_is_rev1()); | |
2646 | exproto->rx_frame_asm.set_is_rev1(rx_frame_asm.get_is_rev1()); | |
2647 | ||
11fdf7f2 TL |
2648 | exproto->client_cookie = client_cookie; |
2649 | exproto->peer_name = peer_name; | |
2650 | exproto->connection_features = connection_features; | |
2651 | existing->set_features(connection_features); | |
2652 | } | |
2653 | exproto->peer_global_seq = peer_global_seq; | |
2654 | ||
9f95a23c | 2655 | ceph_assert(connection->center->in_thread()); |
11fdf7f2 TL |
2656 | auto temp_cs = std::move(connection->cs); |
2657 | EventCenter *new_center = connection->center; | |
2658 | Worker *new_worker = connection->worker; | |
9f95a23c TL |
2659 | // we can steal the session_stream_handlers under the assumption |
2660 | // this happens in the event center's thread as there should be | |
2661 | // no user outside its boundaries (simlarly to e.g. outgoing_bl). | |
2662 | auto temp_stream_handlers = std::move(session_stream_handlers); | |
2663 | exproto->auth_meta = auth_meta; | |
11fdf7f2 TL |
2664 | |
2665 | ldout(messenger->cct, 5) << __func__ << " stop myself to swap existing" | |
2666 | << dendl; | |
494da23a | 2667 | |
11fdf7f2 TL |
2668 | // avoid _stop shutdown replacing socket |
2669 | // queue a reset on the new connection, which we're dumping for the old | |
2670 | stop(); | |
2671 | ||
2672 | connection->dispatch_queue->queue_reset(connection); | |
2673 | ||
2674 | exproto->can_write = false; | |
494da23a | 2675 | exproto->write_in_progress = false; |
11fdf7f2 TL |
2676 | exproto->reconnecting = reconnecting; |
2677 | exproto->replacing = true; | |
11fdf7f2 TL |
2678 | existing->state_offset = 0; |
2679 | // avoid previous thread modify event | |
2680 | exproto->state = NONE; | |
2681 | existing->state = AsyncConnection::STATE_NONE; | |
2682 | // Discard existing prefetch buffer in `recv_buf` | |
2683 | existing->recv_start = existing->recv_end = 0; | |
2684 | // there shouldn't exist any buffer | |
2685 | ceph_assert(connection->recv_start == connection->recv_end); | |
2686 | ||
2687 | auto deactivate_existing = std::bind( | |
9f95a23c TL |
2688 | [ existing, |
2689 | new_worker, | |
2690 | new_center, | |
2691 | exproto, | |
2692 | temp_stream_handlers=std::move(temp_stream_handlers) | |
2693 | ](ConnectedSocket &cs) mutable { | |
11fdf7f2 TL |
2694 | // we need to delete time event in original thread |
2695 | { | |
2696 | std::lock_guard<std::mutex> l(existing->lock); | |
2697 | existing->write_lock.lock(); | |
2698 | exproto->requeue_sent(); | |
9f95a23c TL |
2699 | // XXX: do we really need the locking for `outgoing_bl`? There is |
2700 | // a comment just above its definition saying "lockfree, only used | |
2701 | // in own thread". I'm following lockfull schema just in the case. | |
2702 | // From performance point of view it should be fine – this happens | |
2703 | // far away from hot paths. | |
2704 | existing->outgoing_bl.clear(); | |
11fdf7f2 | 2705 | existing->open_write = false; |
9f95a23c | 2706 | exproto->session_stream_handlers = std::move(temp_stream_handlers); |
11fdf7f2 TL |
2707 | existing->write_lock.unlock(); |
2708 | if (exproto->state == NONE) { | |
2709 | existing->shutdown_socket(); | |
2710 | existing->cs = std::move(cs); | |
2711 | existing->worker->references--; | |
2712 | new_worker->references++; | |
2713 | existing->logger = new_worker->get_perf_counter(); | |
2714 | existing->worker = new_worker; | |
2715 | existing->center = new_center; | |
2716 | if (existing->delay_state) | |
2717 | existing->delay_state->set_center(new_center); | |
2718 | } else if (exproto->state == CLOSED) { | |
2719 | auto back_to_close = std::bind( | |
2720 | [](ConnectedSocket &cs) mutable { cs.close(); }, std::move(cs)); | |
2721 | new_center->submit_to(new_center->get_id(), | |
2722 | std::move(back_to_close), true); | |
2723 | return; | |
2724 | } else { | |
2725 | ceph_abort(); | |
2726 | } | |
2727 | } | |
2728 | ||
2729 | // Before changing existing->center, it may already exists some | |
2730 | // events in existing->center's queue. Then if we mark down | |
2731 | // `existing`, it will execute in another thread and clean up | |
2732 | // connection. Previous event will result in segment fault | |
2733 | auto transfer_existing = [existing, exproto]() mutable { | |
2734 | std::lock_guard<std::mutex> l(existing->lock); | |
2735 | if (exproto->state == CLOSED) return; | |
2736 | ceph_assert(exproto->state == NONE); | |
2737 | ||
2738 | exproto->state = SESSION_ACCEPTING; | |
81eedcae TL |
2739 | // we have called shutdown_socket above |
2740 | ceph_assert(existing->last_tick_id == 0); | |
2741 | // restart timer since we are going to re-build connection | |
2742 | existing->last_connect_started = ceph::coarse_mono_clock::now(); | |
2743 | existing->last_tick_id = existing->center->create_time_event( | |
2744 | existing->connect_timeout_us, existing->tick_handler); | |
11fdf7f2 TL |
2745 | existing->state = AsyncConnection::STATE_CONNECTION_ESTABLISHED; |
2746 | existing->center->create_file_event(existing->cs.fd(), EVENT_READABLE, | |
2747 | existing->read_handler); | |
2748 | if (!exproto->reconnecting) { | |
2749 | exproto->run_continuation(exproto->send_server_ident()); | |
2750 | } else { | |
2751 | exproto->run_continuation(exproto->send_reconnect_ok()); | |
2752 | } | |
2753 | }; | |
2754 | if (existing->center->in_thread()) | |
2755 | transfer_existing(); | |
2756 | else | |
2757 | existing->center->submit_to(existing->center->get_id(), | |
2758 | std::move(transfer_existing), true); | |
2759 | }, | |
2760 | std::move(temp_cs)); | |
2761 | ||
2762 | existing->center->submit_to(existing->center->get_id(), | |
2763 | std::move(deactivate_existing), true); | |
2764 | return nullptr; | |
2765 | } | |
2766 | ||
2767 | CtPtr ProtocolV2::send_server_ident() { | |
2768 | ldout(cct, 20) << __func__ << dendl; | |
2769 | ||
2770 | // this is required for the case when this connection is being replaced | |
2771 | out_seq = discard_requeued_up_to(out_seq, 0); | |
2772 | in_seq = 0; | |
2773 | ||
2774 | if (!connection->policy.lossy) { | |
2775 | server_cookie = ceph::util::generate_random_number<uint64_t>(1, -1ll); | |
2776 | } | |
2777 | ||
2778 | uint64_t flags = 0; | |
2779 | if (connection->policy.lossy) { | |
2780 | flags = flags | CEPH_MSG_CONNECT_LOSSY; | |
2781 | } | |
2782 | ||
2783 | uint64_t gs = messenger->get_global_seq(); | |
2784 | auto server_ident = ServerIdentFrame::Encode( | |
2785 | messenger->get_myaddrs(), | |
2786 | messenger->get_myname().num(), | |
2787 | gs, | |
2788 | connection->policy.features_supported, | |
2789 | connection->policy.features_required | msgr2_required, | |
2790 | flags, | |
2791 | server_cookie); | |
2792 | ||
2793 | ldout(cct, 5) << __func__ << " sending identification:" | |
2794 | << " addrs=" << messenger->get_myaddrs() | |
2795 | << " gid=" << messenger->get_myname().num() | |
2796 | << " global_seq=" << gs << " features_supported=" << std::hex | |
2797 | << connection->policy.features_supported | |
2798 | << " features_required=" | |
2799 | << (connection->policy.features_required | msgr2_required) | |
f6b5b4d7 TL |
2800 | << " flags=" << flags |
2801 | << " cookie=" << server_cookie << std::dec << dendl; | |
11fdf7f2 TL |
2802 | |
2803 | connection->lock.unlock(); | |
2804 | // Because "replacing" will prevent other connections preempt this addr, | |
2805 | // it's safe that here we don't acquire Connection's lock | |
2806 | ssize_t r = messenger->accept_conn(connection); | |
2807 | ||
2808 | connection->inject_delay(); | |
2809 | ||
2810 | connection->lock.lock(); | |
2811 | ||
2812 | if (r < 0) { | |
2813 | ldout(cct, 1) << __func__ << " existing race replacing process for addr = " | |
2814 | << connection->peer_addrs->msgr2_addr() | |
2815 | << " just fail later one(this)" << dendl; | |
2816 | connection->inject_delay(); | |
2817 | return _fault(); | |
2818 | } | |
2819 | if (state != SESSION_ACCEPTING) { | |
2820 | ldout(cct, 1) << __func__ | |
2821 | << " state changed while accept_conn, it must be mark_down" | |
2822 | << dendl; | |
2823 | ceph_assert(state == CLOSED || state == NONE); | |
2824 | messenger->unregister_conn(connection); | |
2825 | connection->inject_delay(); | |
2826 | return _fault(); | |
2827 | } | |
2828 | ||
2829 | connection->set_features(connection_features); | |
2830 | ||
2831 | // notify | |
2832 | connection->dispatch_queue->queue_accept(connection); | |
2833 | messenger->ms_deliver_handle_fast_accept(connection); | |
2834 | ||
2835 | INTERCEPT(12); | |
2836 | ||
2837 | return WRITE(server_ident, "server ident", server_ready); | |
2838 | } | |
2839 | ||
2840 | CtPtr ProtocolV2::server_ready() { | |
2841 | ldout(cct, 20) << __func__ << dendl; | |
2842 | ||
2843 | if (connection->delay_state) { | |
2844 | ceph_assert(connection->delay_state->ready()); | |
2845 | } | |
2846 | ||
2847 | return ready(); | |
2848 | } | |
2849 | ||
2850 | CtPtr ProtocolV2::send_reconnect_ok() { | |
2851 | ldout(cct, 20) << __func__ << dendl; | |
2852 | ||
2853 | out_seq = discard_requeued_up_to(out_seq, message_seq); | |
2854 | ||
2855 | uint64_t ms = in_seq; | |
2856 | auto reconnect_ok = ReconnectOkFrame::Encode(ms); | |
2857 | ||
2858 | ldout(cct, 5) << __func__ << " sending reconnect_ok: msg_seq=" << ms << dendl; | |
2859 | ||
2860 | connection->lock.unlock(); | |
2861 | // Because "replacing" will prevent other connections preempt this addr, | |
2862 | // it's safe that here we don't acquire Connection's lock | |
2863 | ssize_t r = messenger->accept_conn(connection); | |
2864 | ||
2865 | connection->inject_delay(); | |
2866 | ||
2867 | connection->lock.lock(); | |
2868 | ||
2869 | if (r < 0) { | |
2870 | ldout(cct, 1) << __func__ << " existing race replacing process for addr = " | |
2871 | << connection->peer_addrs->msgr2_addr() | |
2872 | << " just fail later one(this)" << dendl; | |
2873 | connection->inject_delay(); | |
2874 | return _fault(); | |
2875 | } | |
2876 | if (state != SESSION_ACCEPTING) { | |
2877 | ldout(cct, 1) << __func__ | |
2878 | << " state changed while accept_conn, it must be mark_down" | |
2879 | << dendl; | |
2880 | ceph_assert(state == CLOSED || state == NONE); | |
2881 | messenger->unregister_conn(connection); | |
2882 | connection->inject_delay(); | |
2883 | return _fault(); | |
2884 | } | |
2885 | ||
2886 | // notify | |
2887 | connection->dispatch_queue->queue_accept(connection); | |
2888 | messenger->ms_deliver_handle_fast_accept(connection); | |
2889 | ||
2890 | INTERCEPT(14); | |
2891 | ||
2892 | return WRITE(reconnect_ok, "reconnect ok", server_ready); | |
2893 | } |