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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2016 XSKY <haomai@xsky.com> | |
7 | * | |
8 | * Author: Haomai Wang <haomaiwang@gmail.com> | |
9 | * | |
10 | * This is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU Lesser General Public | |
12 | * License version 2.1, as published by the Free Software | |
13 | * Foundation. See file COPYING. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include "Infiniband.h" | |
7c673cae FG |
18 | #include "common/errno.h" |
19 | #include "common/debug.h" | |
31f18b77 | 20 | #include "RDMAStack.h" |
7c673cae FG |
21 | |
22 | #define dout_subsys ceph_subsys_ms | |
23 | #undef dout_prefix | |
24 | #define dout_prefix *_dout << "Infiniband " | |
25 | ||
31f18b77 | 26 | static const uint32_t MAX_SHARED_RX_SGE_COUNT = 1; |
7c673cae | 27 | static const uint32_t MAX_INLINE_DATA = 0; |
31f18b77 FG |
28 | static const uint32_t TCP_MSG_LEN = sizeof("0000:00000000:00000000:00000000:00000000000000000000000000000000"); |
29 | static const uint32_t CQ_DEPTH = 30000; | |
30 | ||
31 | Port::Port(CephContext *cct, struct ibv_context* ictxt, uint8_t ipn): ctxt(ictxt), port_num(ipn), port_attr(new ibv_port_attr) | |
32 | { | |
33 | #ifdef HAVE_IBV_EXP | |
34 | union ibv_gid cgid; | |
35 | struct ibv_exp_gid_attr gid_attr; | |
36 | bool malformed = false; | |
37 | ||
38 | ldout(cct,1) << __func__ << " using experimental verbs for gid" << dendl; | |
39 | int r = ibv_query_port(ctxt, port_num, port_attr); | |
40 | if (r == -1) { | |
41 | lderr(cct) << __func__ << " query port failed " << cpp_strerror(errno) << dendl; | |
42 | ceph_abort(); | |
43 | } | |
44 | ||
45 | lid = port_attr->lid; | |
46 | ||
47 | // search for requested GID in GIDs table | |
48 | ldout(cct, 1) << __func__ << " looking for local GID " << (cct->_conf->ms_async_rdma_local_gid) | |
49 | << " of type " << (cct->_conf->ms_async_rdma_roce_ver) << dendl; | |
50 | r = sscanf(cct->_conf->ms_async_rdma_local_gid.c_str(), | |
51 | "%02hhx%02hhx:%02hhx%02hhx:%02hhx%02hhx:%02hhx%02hhx" | |
52 | ":%02hhx%02hhx:%02hhx%02hhx:%02hhx%02hhx:%02hhx%02hhx", | |
53 | &cgid.raw[ 0], &cgid.raw[ 1], | |
54 | &cgid.raw[ 2], &cgid.raw[ 3], | |
55 | &cgid.raw[ 4], &cgid.raw[ 5], | |
56 | &cgid.raw[ 6], &cgid.raw[ 7], | |
57 | &cgid.raw[ 8], &cgid.raw[ 9], | |
58 | &cgid.raw[10], &cgid.raw[11], | |
59 | &cgid.raw[12], &cgid.raw[13], | |
60 | &cgid.raw[14], &cgid.raw[15]); | |
61 | ||
62 | if (r != 16) { | |
63 | ldout(cct, 1) << __func__ << " malformed or no GID supplied, using GID index 0" << dendl; | |
64 | malformed = true; | |
65 | } | |
66 | ||
67 | gid_attr.comp_mask = IBV_EXP_QUERY_GID_ATTR_TYPE; | |
68 | ||
69 | for (gid_idx = 0; gid_idx < port_attr->gid_tbl_len; gid_idx++) { | |
70 | r = ibv_query_gid(ctxt, port_num, gid_idx, &gid); | |
71 | if (r) { | |
72 | lderr(cct) << __func__ << " query gid of port " << port_num << " index " << gid_idx << " failed " << cpp_strerror(errno) << dendl; | |
73 | ceph_abort(); | |
74 | } | |
75 | r = ibv_exp_query_gid_attr(ctxt, port_num, gid_idx, &gid_attr); | |
76 | if (r) { | |
77 | lderr(cct) << __func__ << " query gid attributes of port " << port_num << " index " << gid_idx << " failed " << cpp_strerror(errno) << dendl; | |
78 | ceph_abort(); | |
79 | } | |
80 | ||
81 | if (malformed) break; // stay with gid_idx=0 | |
82 | if ( (gid_attr.type == cct->_conf->ms_async_rdma_roce_ver) && | |
83 | (memcmp(&gid, &cgid, 16) == 0) ) { | |
84 | ldout(cct, 1) << __func__ << " found at index " << gid_idx << dendl; | |
85 | break; | |
86 | } | |
87 | } | |
88 | ||
89 | if (gid_idx == port_attr->gid_tbl_len) { | |
90 | lderr(cct) << __func__ << " Requested local GID was not found in GID table" << dendl; | |
91 | ceph_abort(); | |
92 | } | |
93 | #else | |
94 | int r = ibv_query_port(ctxt, port_num, port_attr); | |
95 | if (r == -1) { | |
96 | lderr(cct) << __func__ << " query port failed " << cpp_strerror(errno) << dendl; | |
97 | ceph_abort(); | |
98 | } | |
99 | ||
100 | lid = port_attr->lid; | |
101 | r = ibv_query_gid(ctxt, port_num, 0, &gid); | |
102 | if (r) { | |
103 | lderr(cct) << __func__ << " query gid failed " << cpp_strerror(errno) << dendl; | |
104 | ceph_abort(); | |
105 | } | |
106 | #endif | |
107 | } | |
108 | ||
109 | ||
110 | Device::Device(CephContext *cct, ibv_device* d): device(d), device_attr(new ibv_device_attr), active_port(nullptr) | |
111 | { | |
112 | if (device == NULL) { | |
113 | lderr(cct) << __func__ << " device == NULL" << cpp_strerror(errno) << dendl; | |
114 | ceph_abort(); | |
115 | } | |
116 | name = ibv_get_device_name(device); | |
117 | ctxt = ibv_open_device(device); | |
118 | if (ctxt == NULL) { | |
119 | lderr(cct) << __func__ << " open rdma device failed. " << cpp_strerror(errno) << dendl; | |
120 | ceph_abort(); | |
121 | } | |
122 | int r = ibv_query_device(ctxt, device_attr); | |
123 | if (r == -1) { | |
124 | lderr(cct) << __func__ << " failed to query rdma device. " << cpp_strerror(errno) << dendl; | |
125 | ceph_abort(); | |
126 | } | |
127 | } | |
128 | ||
129 | void Device::binding_port(CephContext *cct, int port_num) { | |
130 | port_cnt = device_attr->phys_port_cnt; | |
131 | for (uint8_t i = 0; i < port_cnt; ++i) { | |
132 | Port *port = new Port(cct, ctxt, i+1); | |
133 | if (i + 1 == port_num && port->get_port_attr()->state == IBV_PORT_ACTIVE) { | |
134 | active_port = port; | |
135 | ldout(cct, 1) << __func__ << " found active port " << i+1 << dendl; | |
136 | break; | |
137 | } else { | |
138 | ldout(cct, 10) << __func__ << " port " << i+1 << " is not what we want. state: " << port->get_port_attr()->state << ")"<< dendl; | |
139 | } | |
140 | delete port; | |
141 | } | |
142 | if (nullptr == active_port) { | |
143 | lderr(cct) << __func__ << " port not found" << dendl; | |
144 | assert(active_port); | |
145 | } | |
146 | } | |
147 | ||
7c673cae FG |
148 | |
149 | Infiniband::QueuePair::QueuePair( | |
31f18b77 | 150 | CephContext *c, Infiniband& infiniband, ibv_qp_type type, |
7c673cae FG |
151 | int port, ibv_srq *srq, |
152 | Infiniband::CompletionQueue* txcq, Infiniband::CompletionQueue* rxcq, | |
153 | uint32_t max_send_wr, uint32_t max_recv_wr, uint32_t q_key) | |
31f18b77 | 154 | : cct(c), infiniband(infiniband), |
7c673cae | 155 | type(type), |
31f18b77 | 156 | ctxt(infiniband.device->ctxt), |
7c673cae | 157 | ib_physical_port(port), |
31f18b77 | 158 | pd(infiniband.pd->pd), |
7c673cae FG |
159 | srq(srq), |
160 | qp(NULL), | |
161 | txcq(txcq), | |
162 | rxcq(rxcq), | |
163 | initial_psn(0), | |
164 | max_send_wr(max_send_wr), | |
165 | max_recv_wr(max_recv_wr), | |
166 | q_key(q_key), | |
167 | dead(false) | |
168 | { | |
169 | initial_psn = lrand48() & 0xffffff; | |
170 | if (type != IBV_QPT_RC && type != IBV_QPT_UD && type != IBV_QPT_RAW_PACKET) { | |
171 | lderr(cct) << __func__ << " invalid queue pair type" << cpp_strerror(errno) << dendl; | |
172 | ceph_abort(); | |
173 | } | |
31f18b77 | 174 | pd = infiniband.pd->pd; |
7c673cae FG |
175 | } |
176 | ||
177 | int Infiniband::QueuePair::init() | |
178 | { | |
179 | ldout(cct, 20) << __func__ << " started." << dendl; | |
180 | ibv_qp_init_attr qpia; | |
181 | memset(&qpia, 0, sizeof(qpia)); | |
182 | qpia.send_cq = txcq->get_cq(); | |
183 | qpia.recv_cq = rxcq->get_cq(); | |
184 | qpia.srq = srq; // use the same shared receive queue | |
185 | qpia.cap.max_send_wr = max_send_wr; // max outstanding send requests | |
186 | qpia.cap.max_send_sge = 1; // max send scatter-gather elements | |
187 | qpia.cap.max_inline_data = MAX_INLINE_DATA; // max bytes of immediate data on send q | |
188 | qpia.qp_type = type; // RC, UC, UD, or XRC | |
189 | qpia.sq_sig_all = 0; // only generate CQEs on requested WQEs | |
190 | ||
191 | qp = ibv_create_qp(pd, &qpia); | |
192 | if (qp == NULL) { | |
193 | lderr(cct) << __func__ << " failed to create queue pair" << cpp_strerror(errno) << dendl; | |
194 | if (errno == ENOMEM) { | |
195 | lderr(cct) << __func__ << " try reducing ms_async_rdma_receive_buffers, " | |
196 | " ms_async_rdma_send_buffers or" | |
197 | " ms_async_rdma_buffer_size" << dendl; | |
198 | } | |
199 | return -1; | |
200 | } | |
201 | ||
202 | ldout(cct, 20) << __func__ << " successfully create queue pair: " | |
203 | << "qp=" << qp << dendl; | |
204 | ||
205 | // move from RESET to INIT state | |
206 | ibv_qp_attr qpa; | |
207 | memset(&qpa, 0, sizeof(qpa)); | |
208 | qpa.qp_state = IBV_QPS_INIT; | |
209 | qpa.pkey_index = 0; | |
210 | qpa.port_num = (uint8_t)(ib_physical_port); | |
211 | qpa.qp_access_flags = IBV_ACCESS_REMOTE_WRITE | IBV_ACCESS_LOCAL_WRITE; | |
212 | qpa.qkey = q_key; | |
213 | ||
214 | int mask = IBV_QP_STATE | IBV_QP_PORT; | |
215 | switch (type) { | |
216 | case IBV_QPT_RC: | |
217 | mask |= IBV_QP_ACCESS_FLAGS; | |
218 | mask |= IBV_QP_PKEY_INDEX; | |
219 | break; | |
220 | case IBV_QPT_UD: | |
221 | mask |= IBV_QP_QKEY; | |
222 | mask |= IBV_QP_PKEY_INDEX; | |
223 | break; | |
224 | case IBV_QPT_RAW_PACKET: | |
225 | break; | |
226 | default: | |
227 | ceph_abort(); | |
228 | } | |
229 | ||
230 | int ret = ibv_modify_qp(qp, &qpa, mask); | |
231 | if (ret) { | |
232 | ibv_destroy_qp(qp); | |
233 | lderr(cct) << __func__ << " failed to transition to INIT state: " | |
234 | << cpp_strerror(errno) << dendl; | |
235 | return -1; | |
236 | } | |
237 | ldout(cct, 20) << __func__ << " successfully change queue pair to INIT:" | |
238 | << " qp=" << qp << dendl; | |
239 | return 0; | |
240 | } | |
241 | ||
242 | /** | |
243 | * Change RC QueuePair into the ERROR state. This is necessary modify | |
244 | * the Queue Pair into the Error state and poll all of the relevant | |
245 | * Work Completions prior to destroying a Queue Pair. | |
246 | * Since destroying a Queue Pair does not guarantee that its Work | |
247 | * Completions are removed from the CQ upon destruction. Even if the | |
248 | * Work Completions are already in the CQ, it might not be possible to | |
249 | * retrieve them. If the Queue Pair is associated with an SRQ, it is | |
250 | * recommended wait for the affiliated event IBV_EVENT_QP_LAST_WQE_REACHED | |
251 | * | |
252 | * \return | |
253 | * -errno if the QueuePair can't switch to ERROR | |
254 | * 0 for success. | |
255 | */ | |
256 | int Infiniband::QueuePair::to_dead() | |
257 | { | |
258 | if (dead) | |
259 | return 0; | |
260 | ibv_qp_attr qpa; | |
261 | memset(&qpa, 0, sizeof(qpa)); | |
262 | qpa.qp_state = IBV_QPS_ERR; | |
263 | ||
264 | int mask = IBV_QP_STATE; | |
265 | int ret = ibv_modify_qp(qp, &qpa, mask); | |
266 | if (ret) { | |
267 | lderr(cct) << __func__ << " failed to transition to ERROR state: " | |
268 | << cpp_strerror(errno) << dendl; | |
269 | return -errno; | |
270 | } | |
271 | dead = true; | |
272 | return ret; | |
273 | } | |
274 | ||
275 | int Infiniband::QueuePair::get_remote_qp_number(uint32_t *rqp) const | |
276 | { | |
277 | ibv_qp_attr qpa; | |
278 | ibv_qp_init_attr qpia; | |
279 | ||
280 | int r = ibv_query_qp(qp, &qpa, IBV_QP_DEST_QPN, &qpia); | |
281 | if (r) { | |
282 | lderr(cct) << __func__ << " failed to query qp: " | |
283 | << cpp_strerror(errno) << dendl; | |
284 | return -1; | |
285 | } | |
286 | ||
287 | if (rqp) | |
288 | *rqp = qpa.dest_qp_num; | |
289 | return 0; | |
290 | } | |
291 | ||
292 | /** | |
293 | * Get the remote infiniband address for this QueuePair, as set in #plumb(). | |
294 | * LIDs are "local IDs" in infiniband terminology. They are short, locally | |
295 | * routable addresses. | |
296 | */ | |
297 | int Infiniband::QueuePair::get_remote_lid(uint16_t *lid) const | |
298 | { | |
299 | ibv_qp_attr qpa; | |
300 | ibv_qp_init_attr qpia; | |
301 | ||
302 | int r = ibv_query_qp(qp, &qpa, IBV_QP_AV, &qpia); | |
303 | if (r) { | |
304 | lderr(cct) << __func__ << " failed to query qp: " | |
305 | << cpp_strerror(errno) << dendl; | |
306 | return -1; | |
307 | } | |
308 | ||
309 | if (lid) | |
310 | *lid = qpa.ah_attr.dlid; | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /** | |
315 | * Get the state of a QueuePair. | |
316 | */ | |
317 | int Infiniband::QueuePair::get_state() const | |
318 | { | |
319 | ibv_qp_attr qpa; | |
320 | ibv_qp_init_attr qpia; | |
321 | ||
322 | int r = ibv_query_qp(qp, &qpa, IBV_QP_STATE, &qpia); | |
323 | if (r) { | |
324 | lderr(cct) << __func__ << " failed to get state: " | |
325 | << cpp_strerror(errno) << dendl; | |
326 | return -1; | |
327 | } | |
328 | return qpa.qp_state; | |
329 | } | |
330 | ||
331 | /** | |
332 | * Return true if the queue pair is in an error state, false otherwise. | |
333 | */ | |
334 | bool Infiniband::QueuePair::is_error() const | |
335 | { | |
336 | ibv_qp_attr qpa; | |
337 | ibv_qp_init_attr qpia; | |
338 | ||
339 | int r = ibv_query_qp(qp, &qpa, -1, &qpia); | |
340 | if (r) { | |
341 | lderr(cct) << __func__ << " failed to get state: " | |
342 | << cpp_strerror(errno) << dendl; | |
343 | return true; | |
344 | } | |
345 | return qpa.cur_qp_state == IBV_QPS_ERR; | |
346 | } | |
347 | ||
348 | ||
31f18b77 FG |
349 | Infiniband::CompletionChannel::CompletionChannel(CephContext *c, Infiniband &ib) |
350 | : cct(c), infiniband(ib), channel(NULL), cq(NULL), cq_events_that_need_ack(0) | |
7c673cae FG |
351 | { |
352 | } | |
353 | ||
354 | Infiniband::CompletionChannel::~CompletionChannel() | |
355 | { | |
356 | if (channel) { | |
357 | int r = ibv_destroy_comp_channel(channel); | |
358 | if (r < 0) | |
359 | lderr(cct) << __func__ << " failed to destroy cc: " << cpp_strerror(errno) << dendl; | |
360 | assert(r == 0); | |
361 | } | |
362 | } | |
363 | ||
364 | int Infiniband::CompletionChannel::init() | |
365 | { | |
366 | ldout(cct, 20) << __func__ << " started." << dendl; | |
31f18b77 | 367 | channel = ibv_create_comp_channel(infiniband.device->ctxt); |
7c673cae FG |
368 | if (!channel) { |
369 | lderr(cct) << __func__ << " failed to create receive completion channel: " | |
370 | << cpp_strerror(errno) << dendl; | |
371 | return -1; | |
372 | } | |
373 | int rc = NetHandler(cct).set_nonblock(channel->fd); | |
374 | if (rc < 0) { | |
375 | ibv_destroy_comp_channel(channel); | |
376 | return -1; | |
377 | } | |
378 | return 0; | |
379 | } | |
380 | ||
381 | void Infiniband::CompletionChannel::ack_events() | |
382 | { | |
383 | ibv_ack_cq_events(cq, cq_events_that_need_ack); | |
384 | cq_events_that_need_ack = 0; | |
385 | } | |
386 | ||
387 | bool Infiniband::CompletionChannel::get_cq_event() | |
388 | { | |
389 | ibv_cq *cq = NULL; | |
390 | void *ev_ctx; | |
391 | if (ibv_get_cq_event(channel, &cq, &ev_ctx)) { | |
392 | if (errno != EAGAIN && errno != EINTR) | |
393 | lderr(cct) << __func__ << " failed to retrieve CQ event: " | |
394 | << cpp_strerror(errno) << dendl; | |
395 | return false; | |
396 | } | |
397 | ||
398 | /* accumulate number of cq events that need to | |
399 | * * be acked, and periodically ack them | |
400 | * */ | |
401 | if (++cq_events_that_need_ack == MAX_ACK_EVENT) { | |
402 | ldout(cct, 20) << __func__ << " ack aq events." << dendl; | |
403 | ibv_ack_cq_events(cq, MAX_ACK_EVENT); | |
404 | cq_events_that_need_ack = 0; | |
405 | } | |
406 | ||
407 | return true; | |
408 | } | |
409 | ||
410 | ||
411 | Infiniband::CompletionQueue::~CompletionQueue() | |
412 | { | |
413 | if (cq) { | |
414 | int r = ibv_destroy_cq(cq); | |
415 | if (r < 0) | |
416 | lderr(cct) << __func__ << " failed to destroy cq: " << cpp_strerror(errno) << dendl; | |
417 | assert(r == 0); | |
418 | } | |
419 | } | |
420 | ||
421 | int Infiniband::CompletionQueue::init() | |
422 | { | |
31f18b77 | 423 | cq = ibv_create_cq(infiniband.device->ctxt, queue_depth, this, channel->get_channel(), 0); |
7c673cae FG |
424 | if (!cq) { |
425 | lderr(cct) << __func__ << " failed to create receive completion queue: " | |
426 | << cpp_strerror(errno) << dendl; | |
427 | return -1; | |
428 | } | |
429 | ||
430 | if (ibv_req_notify_cq(cq, 0)) { | |
431 | lderr(cct) << __func__ << " ibv_req_notify_cq failed: " << cpp_strerror(errno) << dendl; | |
432 | ibv_destroy_cq(cq); | |
433 | cq = nullptr; | |
434 | return -1; | |
435 | } | |
436 | ||
437 | channel->bind_cq(cq); | |
438 | ldout(cct, 20) << __func__ << " successfully create cq=" << cq << dendl; | |
439 | return 0; | |
440 | } | |
441 | ||
442 | int Infiniband::CompletionQueue::rearm_notify(bool solicite_only) | |
443 | { | |
444 | ldout(cct, 20) << __func__ << " started." << dendl; | |
445 | int r = ibv_req_notify_cq(cq, 0); | |
446 | if (r < 0) | |
447 | lderr(cct) << __func__ << " failed to notify cq: " << cpp_strerror(errno) << dendl; | |
448 | return r; | |
449 | } | |
450 | ||
451 | int Infiniband::CompletionQueue::poll_cq(int num_entries, ibv_wc *ret_wc_array) { | |
452 | int r = ibv_poll_cq(cq, num_entries, ret_wc_array); | |
453 | if (r < 0) { | |
454 | lderr(cct) << __func__ << " poll_completion_queue occur met error: " | |
455 | << cpp_strerror(errno) << dendl; | |
456 | return -1; | |
457 | } | |
458 | return r; | |
459 | } | |
460 | ||
461 | ||
462 | Infiniband::ProtectionDomain::ProtectionDomain(CephContext *cct, Device *device) | |
463 | : pd(ibv_alloc_pd(device->ctxt)) | |
464 | { | |
465 | if (pd == NULL) { | |
466 | lderr(cct) << __func__ << " failed to allocate infiniband protection domain: " << cpp_strerror(errno) << dendl; | |
467 | ceph_abort(); | |
468 | } | |
469 | } | |
470 | ||
471 | Infiniband::ProtectionDomain::~ProtectionDomain() | |
472 | { | |
224ce89b | 473 | ibv_dealloc_pd(pd); |
7c673cae FG |
474 | } |
475 | ||
476 | ||
477 | Infiniband::MemoryManager::Chunk::Chunk(ibv_mr* m, uint32_t len, char* b) | |
478 | : mr(m), bytes(len), offset(0), buffer(b) | |
479 | { | |
480 | } | |
481 | ||
482 | Infiniband::MemoryManager::Chunk::~Chunk() | |
483 | { | |
7c673cae FG |
484 | } |
485 | ||
486 | void Infiniband::MemoryManager::Chunk::set_offset(uint32_t o) | |
487 | { | |
488 | offset = o; | |
489 | } | |
490 | ||
491 | uint32_t Infiniband::MemoryManager::Chunk::get_offset() | |
492 | { | |
493 | return offset; | |
494 | } | |
495 | ||
496 | void Infiniband::MemoryManager::Chunk::set_bound(uint32_t b) | |
497 | { | |
498 | bound = b; | |
499 | } | |
500 | ||
501 | void Infiniband::MemoryManager::Chunk::prepare_read(uint32_t b) | |
502 | { | |
503 | offset = 0; | |
504 | bound = b; | |
505 | } | |
506 | ||
507 | uint32_t Infiniband::MemoryManager::Chunk::get_bound() | |
508 | { | |
509 | return bound; | |
510 | } | |
511 | ||
512 | uint32_t Infiniband::MemoryManager::Chunk::read(char* buf, uint32_t len) | |
513 | { | |
514 | uint32_t left = bound - offset; | |
515 | if (left >= len) { | |
516 | memcpy(buf, buffer+offset, len); | |
517 | offset += len; | |
518 | return len; | |
519 | } else { | |
520 | memcpy(buf, buffer+offset, left); | |
521 | offset = 0; | |
522 | bound = 0; | |
523 | return left; | |
524 | } | |
525 | } | |
526 | ||
527 | uint32_t Infiniband::MemoryManager::Chunk::write(char* buf, uint32_t len) | |
528 | { | |
529 | uint32_t left = bytes - offset; | |
530 | if (left >= len) { | |
531 | memcpy(buffer+offset, buf, len); | |
532 | offset += len; | |
533 | return len; | |
534 | } else { | |
535 | memcpy(buffer+offset, buf, left); | |
536 | offset = bytes; | |
537 | return left; | |
538 | } | |
539 | } | |
540 | ||
541 | bool Infiniband::MemoryManager::Chunk::full() | |
542 | { | |
543 | return offset == bytes; | |
544 | } | |
545 | ||
546 | bool Infiniband::MemoryManager::Chunk::over() | |
547 | { | |
548 | return Infiniband::MemoryManager::Chunk::offset == bound; | |
549 | } | |
550 | ||
551 | void Infiniband::MemoryManager::Chunk::clear() | |
552 | { | |
553 | offset = 0; | |
554 | bound = 0; | |
555 | } | |
556 | ||
31f18b77 FG |
557 | void Infiniband::MemoryManager::Chunk::post_srq(Infiniband *ib) |
558 | { | |
559 | ib->post_chunk(this); | |
560 | } | |
561 | ||
7c673cae FG |
562 | Infiniband::MemoryManager::Cluster::Cluster(MemoryManager& m, uint32_t s) |
563 | : manager(m), buffer_size(s), lock("cluster_lock") | |
564 | { | |
565 | } | |
566 | ||
567 | Infiniband::MemoryManager::Cluster::~Cluster() | |
568 | { | |
224ce89b WB |
569 | int r = ibv_dereg_mr(chunk_base->mr); |
570 | assert(r == 0); | |
7c673cae FG |
571 | const auto chunk_end = chunk_base + num_chunk; |
572 | for (auto chunk = chunk_base; chunk != chunk_end; chunk++) { | |
573 | chunk->~Chunk(); | |
574 | } | |
575 | ||
576 | ::free(chunk_base); | |
577 | if (manager.enabled_huge_page) | |
578 | manager.free_huge_pages(base); | |
579 | else | |
580 | ::free(base); | |
581 | } | |
582 | ||
583 | int Infiniband::MemoryManager::Cluster::fill(uint32_t num) | |
584 | { | |
585 | assert(!base); | |
586 | num_chunk = num; | |
587 | uint32_t bytes = buffer_size * num; | |
588 | if (manager.enabled_huge_page) { | |
589 | base = (char*)manager.malloc_huge_pages(bytes); | |
590 | } else { | |
591 | base = (char*)memalign(CEPH_PAGE_SIZE, bytes); | |
592 | } | |
593 | end = base + bytes; | |
594 | assert(base); | |
595 | chunk_base = static_cast<Chunk*>(::malloc(sizeof(Chunk) * num)); | |
596 | memset(chunk_base, 0, sizeof(Chunk) * num); | |
597 | free_chunks.reserve(num); | |
224ce89b WB |
598 | ibv_mr* m = ibv_reg_mr(manager.pd->pd, base, bytes, IBV_ACCESS_REMOTE_WRITE | IBV_ACCESS_LOCAL_WRITE); |
599 | assert(m); | |
7c673cae FG |
600 | Chunk* chunk = chunk_base; |
601 | for (uint32_t offset = 0; offset < bytes; offset += buffer_size){ | |
7c673cae FG |
602 | new(chunk) Chunk(m, buffer_size, base+offset); |
603 | free_chunks.push_back(chunk); | |
604 | chunk++; | |
605 | } | |
606 | return 0; | |
607 | } | |
608 | ||
609 | void Infiniband::MemoryManager::Cluster::take_back(std::vector<Chunk*> &ck) | |
610 | { | |
611 | Mutex::Locker l(lock); | |
612 | for (auto c : ck) { | |
613 | c->clear(); | |
614 | free_chunks.push_back(c); | |
615 | } | |
616 | } | |
617 | ||
618 | int Infiniband::MemoryManager::Cluster::get_buffers(std::vector<Chunk*> &chunks, size_t bytes) | |
619 | { | |
620 | uint32_t num = bytes / buffer_size + 1; | |
621 | if (bytes % buffer_size == 0) | |
622 | --num; | |
623 | int r = num; | |
624 | Mutex::Locker l(lock); | |
625 | if (free_chunks.empty()) | |
626 | return 0; | |
627 | if (!bytes) { | |
628 | r = free_chunks.size(); | |
629 | for (auto c : free_chunks) | |
630 | chunks.push_back(c); | |
631 | free_chunks.clear(); | |
632 | return r; | |
633 | } | |
634 | if (free_chunks.size() < num) { | |
635 | num = free_chunks.size(); | |
636 | r = num; | |
637 | } | |
638 | for (uint32_t i = 0; i < num; ++i) { | |
639 | chunks.push_back(free_chunks.back()); | |
640 | free_chunks.pop_back(); | |
641 | } | |
642 | return r; | |
643 | } | |
644 | ||
645 | ||
646 | Infiniband::MemoryManager::MemoryManager(Device *d, ProtectionDomain *p, bool hugepage) | |
647 | : device(d), pd(p) | |
648 | { | |
649 | enabled_huge_page = hugepage; | |
650 | } | |
651 | ||
652 | Infiniband::MemoryManager::~MemoryManager() | |
653 | { | |
654 | if (channel) | |
655 | delete channel; | |
656 | if (send) | |
657 | delete send; | |
658 | } | |
659 | ||
660 | void* Infiniband::MemoryManager::malloc_huge_pages(size_t size) | |
661 | { | |
662 | size_t real_size = ALIGN_TO_PAGE_SIZE(size + HUGE_PAGE_SIZE); | |
663 | char *ptr = (char *)mmap(NULL, real_size, PROT_READ | PROT_WRITE,MAP_PRIVATE | MAP_ANONYMOUS |MAP_POPULATE | MAP_HUGETLB,-1, 0); | |
664 | if (ptr == MAP_FAILED) { | |
665 | ptr = (char *)malloc(real_size); | |
666 | if (ptr == NULL) return NULL; | |
667 | real_size = 0; | |
668 | } | |
669 | *((size_t *)ptr) = real_size; | |
670 | return ptr + HUGE_PAGE_SIZE; | |
671 | } | |
672 | ||
673 | void Infiniband::MemoryManager::free_huge_pages(void *ptr) | |
674 | { | |
675 | if (ptr == NULL) return; | |
676 | void *real_ptr = (char *)ptr -HUGE_PAGE_SIZE; | |
677 | size_t real_size = *((size_t *)real_ptr); | |
678 | assert(real_size % HUGE_PAGE_SIZE == 0); | |
679 | if (real_size != 0) | |
680 | munmap(real_ptr, real_size); | |
681 | else | |
682 | free(real_ptr); | |
683 | } | |
684 | ||
685 | void Infiniband::MemoryManager::register_rx_tx(uint32_t size, uint32_t rx_num, uint32_t tx_num) | |
686 | { | |
687 | assert(device); | |
688 | assert(pd); | |
689 | channel = new Cluster(*this, size); | |
690 | channel->fill(rx_num); | |
691 | ||
692 | send = new Cluster(*this, size); | |
693 | send->fill(tx_num); | |
694 | } | |
695 | ||
696 | void Infiniband::MemoryManager::return_tx(std::vector<Chunk*> &chunks) | |
697 | { | |
698 | send->take_back(chunks); | |
699 | } | |
700 | ||
701 | int Infiniband::MemoryManager::get_send_buffers(std::vector<Chunk*> &c, size_t bytes) | |
702 | { | |
703 | return send->get_buffers(c, bytes); | |
704 | } | |
705 | ||
706 | int Infiniband::MemoryManager::get_channel_buffers(std::vector<Chunk*> &chunks, size_t bytes) | |
707 | { | |
708 | return channel->get_buffers(chunks, bytes); | |
709 | } | |
710 | ||
711 | ||
31f18b77 FG |
712 | Infiniband::Infiniband(CephContext *cct, const std::string &device_name, uint8_t port_num) |
713 | : cct(cct), lock("IB lock"), device_name(device_name), port_num(port_num) | |
7c673cae FG |
714 | { |
715 | } | |
716 | ||
7c673cae FG |
717 | void Infiniband::init() |
718 | { | |
719 | Mutex::Locker l(lock); | |
720 | ||
721 | if (initialized) | |
722 | return; | |
723 | ||
31f18b77 | 724 | device_list = new DeviceList(cct); |
7c673cae FG |
725 | initialized = true; |
726 | ||
31f18b77 FG |
727 | device = device_list->get_device(device_name.c_str()); |
728 | device->binding_port(cct, port_num); | |
729 | assert(device); | |
730 | ib_physical_port = device->active_port->get_port_num(); | |
731 | pd = new ProtectionDomain(cct, device); | |
732 | assert(NetHandler(cct).set_nonblock(device->ctxt->async_fd) == 0); | |
733 | ||
734 | max_recv_wr = device->device_attr->max_srq_wr; | |
735 | if (max_recv_wr > cct->_conf->ms_async_rdma_receive_buffers) { | |
736 | max_recv_wr = cct->_conf->ms_async_rdma_receive_buffers; | |
737 | ldout(cct, 1) << __func__ << " assigning: " << max_recv_wr << " receive buffers" << dendl; | |
738 | } else { | |
739 | ldout(cct, 1) << __func__ << " using the max allowed receive buffers: " << max_recv_wr << dendl; | |
740 | } | |
741 | ||
742 | max_send_wr = device->device_attr->max_qp_wr; | |
743 | if (max_send_wr > cct->_conf->ms_async_rdma_send_buffers) { | |
744 | max_send_wr = cct->_conf->ms_async_rdma_send_buffers; | |
745 | ldout(cct, 1) << __func__ << " assigning: " << max_send_wr << " send buffers" << dendl; | |
746 | } else { | |
747 | ldout(cct, 1) << __func__ << " using the max allowed send buffers: " << max_send_wr << dendl; | |
748 | } | |
749 | ||
750 | ldout(cct, 1) << __func__ << " device allow " << device->device_attr->max_cqe | |
751 | << " completion entries" << dendl; | |
752 | ||
753 | memory_manager = new MemoryManager(device, pd, | |
754 | cct->_conf->ms_async_rdma_enable_hugepage); | |
755 | memory_manager->register_rx_tx( | |
756 | cct->_conf->ms_async_rdma_buffer_size, max_recv_wr, max_send_wr); | |
757 | ||
758 | srq = create_shared_receive_queue(max_recv_wr, MAX_SHARED_RX_SGE_COUNT); | |
759 | post_channel_cluster(); | |
760 | ||
7c673cae FG |
761 | dispatcher->polling_start(); |
762 | } | |
763 | ||
31f18b77 FG |
764 | Infiniband::~Infiniband() |
765 | { | |
766 | if (!initialized) | |
767 | return; | |
768 | ||
769 | if (dispatcher) | |
770 | dispatcher->polling_stop(); | |
771 | ||
772 | ibv_destroy_srq(srq); | |
773 | delete memory_manager; | |
774 | delete pd; | |
775 | } | |
776 | ||
7c673cae FG |
777 | void Infiniband::set_dispatcher(RDMADispatcher *d) |
778 | { | |
779 | assert(!d ^ !dispatcher); | |
780 | ||
781 | dispatcher = d; | |
782 | } | |
783 | ||
31f18b77 FG |
784 | /** |
785 | * Create a shared receive queue. This basically wraps the verbs call. | |
786 | * | |
787 | * \param[in] max_wr | |
788 | * The max number of outstanding work requests in the SRQ. | |
789 | * \param[in] max_sge | |
790 | * The max number of scatter elements per WR. | |
791 | * \return | |
792 | * A valid ibv_srq pointer, or NULL on error. | |
793 | */ | |
794 | ibv_srq* Infiniband::create_shared_receive_queue(uint32_t max_wr, uint32_t max_sge) | |
795 | { | |
796 | ibv_srq_init_attr sia; | |
797 | memset(&sia, 0, sizeof(sia)); | |
798 | sia.srq_context = device->ctxt; | |
799 | sia.attr.max_wr = max_wr; | |
800 | sia.attr.max_sge = max_sge; | |
801 | return ibv_create_srq(pd->pd, &sia); | |
802 | } | |
803 | ||
804 | int Infiniband::get_tx_buffers(std::vector<Chunk*> &c, size_t bytes) | |
805 | { | |
806 | return memory_manager->get_send_buffers(c, bytes); | |
807 | } | |
808 | ||
809 | /** | |
810 | * Create a new QueuePair. This factory should be used in preference to | |
811 | * the QueuePair constructor directly, since this lets derivatives of | |
812 | * Infiniband, e.g. MockInfiniband (if it existed), | |
813 | * return mocked out QueuePair derivatives. | |
814 | * | |
815 | * \return | |
816 | * QueuePair on success or NULL if init fails | |
817 | * See QueuePair::QueuePair for parameter documentation. | |
818 | */ | |
819 | Infiniband::QueuePair* Infiniband::create_queue_pair(CephContext *cct, CompletionQueue *tx, CompletionQueue* rx, ibv_qp_type type) | |
820 | { | |
821 | Infiniband::QueuePair *qp = new QueuePair( | |
822 | cct, *this, type, ib_physical_port, srq, tx, rx, max_send_wr, max_recv_wr); | |
823 | if (qp->init()) { | |
824 | delete qp; | |
825 | return NULL; | |
826 | } | |
827 | return qp; | |
828 | } | |
829 | ||
830 | int Infiniband::post_chunk(Chunk* chunk) | |
831 | { | |
832 | ibv_sge isge; | |
833 | isge.addr = reinterpret_cast<uint64_t>(chunk->buffer); | |
834 | isge.length = chunk->bytes; | |
835 | isge.lkey = chunk->mr->lkey; | |
836 | ibv_recv_wr rx_work_request; | |
837 | ||
838 | memset(&rx_work_request, 0, sizeof(rx_work_request)); | |
839 | rx_work_request.wr_id = reinterpret_cast<uint64_t>(chunk);// stash descriptor ptr | |
840 | rx_work_request.next = NULL; | |
841 | rx_work_request.sg_list = &isge; | |
842 | rx_work_request.num_sge = 1; | |
843 | ||
844 | ibv_recv_wr *badWorkRequest; | |
845 | int ret = ibv_post_srq_recv(srq, &rx_work_request, &badWorkRequest); | |
846 | if (ret) | |
847 | return -errno; | |
848 | return 0; | |
849 | } | |
850 | ||
851 | int Infiniband::post_channel_cluster() | |
852 | { | |
853 | vector<Chunk*> free_chunks; | |
854 | int r = memory_manager->get_channel_buffers(free_chunks, 0); | |
855 | assert(r > 0); | |
856 | for (vector<Chunk*>::iterator iter = free_chunks.begin(); iter != free_chunks.end(); ++iter) { | |
857 | r = post_chunk(*iter); | |
858 | assert(r == 0); | |
859 | } | |
860 | return 0; | |
861 | } | |
862 | ||
863 | Infiniband::CompletionChannel* Infiniband::create_comp_channel(CephContext *c) | |
7c673cae | 864 | { |
31f18b77 FG |
865 | Infiniband::CompletionChannel *cc = new Infiniband::CompletionChannel(c, *this); |
866 | if (cc->init()) { | |
867 | delete cc; | |
868 | return NULL; | |
869 | } | |
870 | return cc; | |
7c673cae FG |
871 | } |
872 | ||
31f18b77 FG |
873 | Infiniband::CompletionQueue* Infiniband::create_comp_queue( |
874 | CephContext *cct, CompletionChannel *cc) | |
7c673cae | 875 | { |
31f18b77 FG |
876 | Infiniband::CompletionQueue *cq = new Infiniband::CompletionQueue( |
877 | cct, *this, CQ_DEPTH, cc); | |
878 | if (cq->init()) { | |
879 | delete cq; | |
880 | return NULL; | |
881 | } | |
882 | return cq; | |
883 | } | |
884 | ||
885 | // 1 means no valid buffer read, 0 means got enough buffer | |
886 | // else return < 0 means error | |
887 | int Infiniband::recv_msg(CephContext *cct, int sd, IBSYNMsg& im) | |
888 | { | |
889 | char msg[TCP_MSG_LEN]; | |
890 | char gid[33]; | |
891 | ssize_t r = ::read(sd, &msg, sizeof(msg)); | |
892 | // Drop incoming qpt | |
893 | if (cct->_conf->ms_inject_socket_failures && sd >= 0) { | |
894 | if (rand() % cct->_conf->ms_inject_socket_failures == 0) { | |
895 | ldout(cct, 0) << __func__ << " injecting socket failure" << dendl; | |
896 | return -EINVAL; | |
897 | } | |
898 | } | |
899 | if (r < 0) { | |
900 | r = -errno; | |
901 | lderr(cct) << __func__ << " got error " << r << ": " | |
902 | << cpp_strerror(r) << dendl; | |
903 | } else if (r == 0) { // valid disconnect message of length 0 | |
904 | ldout(cct, 10) << __func__ << " got disconnect message " << dendl; | |
905 | } else if ((size_t)r != sizeof(msg)) { // invalid message | |
906 | ldout(cct, 1) << __func__ << " got bad length (" << r << ") " << dendl; | |
907 | r = -EINVAL; | |
908 | } else { // valid message | |
909 | sscanf(msg, "%hu:%x:%x:%x:%s", &(im.lid), &(im.qpn), &(im.psn), &(im.peer_qpn),gid); | |
910 | wire_gid_to_gid(gid, &(im.gid)); | |
911 | ldout(cct, 5) << __func__ << " recevd: " << im.lid << ", " << im.qpn << ", " << im.psn << ", " << im.peer_qpn << ", " << gid << dendl; | |
912 | } | |
913 | return r; | |
914 | } | |
915 | ||
916 | int Infiniband::send_msg(CephContext *cct, int sd, IBSYNMsg& im) | |
917 | { | |
918 | int retry = 0; | |
919 | ssize_t r; | |
920 | ||
921 | char msg[TCP_MSG_LEN]; | |
922 | char gid[33]; | |
923 | retry: | |
924 | gid_to_wire_gid(&(im.gid), gid); | |
925 | sprintf(msg, "%04x:%08x:%08x:%08x:%s", im.lid, im.qpn, im.psn, im.peer_qpn, gid); | |
926 | ldout(cct, 10) << __func__ << " sending: " << im.lid << ", " << im.qpn << ", " << im.psn | |
927 | << ", " << im.peer_qpn << ", " << gid << dendl; | |
928 | r = ::write(sd, msg, sizeof(msg)); | |
929 | // Drop incoming qpt | |
930 | if (cct->_conf->ms_inject_socket_failures && sd >= 0) { | |
931 | if (rand() % cct->_conf->ms_inject_socket_failures == 0) { | |
932 | ldout(cct, 0) << __func__ << " injecting socket failure" << dendl; | |
933 | return -EINVAL; | |
934 | } | |
935 | } | |
936 | ||
937 | if ((size_t)r != sizeof(msg)) { | |
938 | // FIXME need to handle EAGAIN instead of retry | |
939 | if (r < 0 && (errno == EINTR || errno == EAGAIN) && retry < 3) { | |
940 | retry++; | |
941 | goto retry; | |
942 | } | |
943 | if (r < 0) | |
944 | lderr(cct) << __func__ << " send returned error " << errno << ": " | |
945 | << cpp_strerror(errno) << dendl; | |
946 | else | |
947 | lderr(cct) << __func__ << " send got bad length (" << r << ") " << cpp_strerror(errno) << dendl; | |
948 | return -errno; | |
949 | } | |
950 | return 0; | |
951 | } | |
952 | ||
953 | void Infiniband::wire_gid_to_gid(const char *wgid, union ibv_gid *gid) | |
954 | { | |
955 | char tmp[9]; | |
956 | uint32_t v32; | |
957 | int i; | |
958 | ||
959 | for (tmp[8] = 0, i = 0; i < 4; ++i) { | |
960 | memcpy(tmp, wgid + i * 8, 8); | |
961 | sscanf(tmp, "%x", &v32); | |
962 | *(uint32_t *)(&gid->raw[i * 4]) = ntohl(v32); | |
963 | } | |
964 | } | |
965 | ||
966 | void Infiniband::gid_to_wire_gid(const union ibv_gid *gid, char wgid[]) | |
967 | { | |
968 | for (int i = 0; i < 4; ++i) | |
969 | sprintf(&wgid[i * 8], "%08x", htonl(*(uint32_t *)(gid->raw + i * 4))); | |
7c673cae FG |
970 | } |
971 | ||
972 | Infiniband::QueuePair::~QueuePair() | |
973 | { | |
974 | if (qp) { | |
975 | ldout(cct, 20) << __func__ << " destroy qp=" << qp << dendl; | |
976 | assert(!ibv_destroy_qp(qp)); | |
977 | } | |
978 | } | |
979 | ||
980 | /** | |
981 | * Given a string representation of the `status' field from Verbs | |
982 | * struct `ibv_wc'. | |
983 | * | |
984 | * \param[in] status | |
985 | * The integer status obtained in ibv_wc.status. | |
986 | * \return | |
987 | * A string corresponding to the given status. | |
988 | */ | |
989 | const char* Infiniband::wc_status_to_string(int status) | |
990 | { | |
991 | static const char *lookup[] = { | |
992 | "SUCCESS", | |
993 | "LOC_LEN_ERR", | |
994 | "LOC_QP_OP_ERR", | |
995 | "LOC_EEC_OP_ERR", | |
996 | "LOC_PROT_ERR", | |
997 | "WR_FLUSH_ERR", | |
998 | "MW_BIND_ERR", | |
999 | "BAD_RESP_ERR", | |
1000 | "LOC_ACCESS_ERR", | |
1001 | "REM_INV_REQ_ERR", | |
1002 | "REM_ACCESS_ERR", | |
1003 | "REM_OP_ERR", | |
1004 | "RETRY_EXC_ERR", | |
1005 | "RNR_RETRY_EXC_ERR", | |
1006 | "LOC_RDD_VIOL_ERR", | |
1007 | "REM_INV_RD_REQ_ERR", | |
1008 | "REM_ABORT_ERR", | |
1009 | "INV_EECN_ERR", | |
1010 | "INV_EEC_STATE_ERR", | |
1011 | "FATAL_ERR", | |
1012 | "RESP_TIMEOUT_ERR", | |
1013 | "GENERAL_ERR" | |
1014 | }; | |
1015 | ||
1016 | if (status < IBV_WC_SUCCESS || status > IBV_WC_GENERAL_ERR) | |
1017 | return "<status out of range!>"; | |
1018 | return lookup[status]; | |
1019 | } | |
1020 | ||
1021 | const char* Infiniband::qp_state_string(int status) { | |
1022 | switch(status) { | |
1023 | case IBV_QPS_RESET : return "IBV_QPS_RESET"; | |
1024 | case IBV_QPS_INIT : return "IBV_QPS_INIT"; | |
1025 | case IBV_QPS_RTR : return "IBV_QPS_RTR"; | |
1026 | case IBV_QPS_RTS : return "IBV_QPS_RTS"; | |
1027 | case IBV_QPS_SQD : return "IBV_QPS_SQD"; | |
1028 | case IBV_QPS_SQE : return "IBV_QPS_SQE"; | |
1029 | case IBV_QPS_ERR : return "IBV_QPS_ERR"; | |
1030 | default: return " out of range."; | |
1031 | } | |
1032 | } |