Commit | Line | Data |
---|---|---|
e4c4625f JM |
1 | /* |
2 | * librpma_gpspm: IO engine that uses PMDK librpma to write data, | |
3 | * based on General Purpose Server Persistency Method | |
4 | * | |
5 | * Copyright 2020-2021, Intel Corporation | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License, | |
9 | * version 2 as published by the Free Software Foundation.. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | */ | |
16 | ||
17 | #include "librpma_fio.h" | |
18 | ||
19 | #include <libpmem.h> | |
20 | ||
21 | /* Generated by the protocol buffer compiler from: librpma_gpspm_flush.proto */ | |
22 | #include "librpma_gpspm_flush.pb-c.h" | |
23 | ||
24 | #define MAX_MSG_SIZE (512) | |
25 | #define IO_U_BUF_LEN (2 * MAX_MSG_SIZE) | |
26 | #define SEND_OFFSET (0) | |
27 | #define RECV_OFFSET (SEND_OFFSET + MAX_MSG_SIZE) | |
28 | ||
29 | #define GPSPM_FLUSH_REQUEST__LAST \ | |
30 | { PROTOBUF_C_MESSAGE_INIT(&gpspm_flush_request__descriptor), 0, 0, 0 } | |
31 | ||
32 | /* | |
33 | * 'Flush_req_last' is the last flush request | |
34 | * the client has to send to server to indicate | |
35 | * that the client is done. | |
36 | */ | |
37 | static const GPSPMFlushRequest Flush_req_last = GPSPM_FLUSH_REQUEST__LAST; | |
38 | ||
39 | #define IS_NOT_THE_LAST_MESSAGE(flush_req) \ | |
40 | (flush_req->length != Flush_req_last.length || \ | |
41 | flush_req->offset != Flush_req_last.offset) | |
42 | ||
43 | /* client side implementation */ | |
44 | ||
45 | /* get next io_u message buffer in the round-robin fashion */ | |
46 | #define IO_U_NEXT_BUF_OFF_CLIENT(cd) \ | |
47 | (IO_U_BUF_LEN * ((cd->msg_curr++) % cd->msg_num)) | |
48 | ||
49 | struct client_data { | |
50 | /* memory for sending and receiving buffered */ | |
51 | char *io_us_msgs; | |
52 | ||
53 | /* resources for messaging buffer */ | |
54 | uint32_t msg_num; | |
55 | uint32_t msg_curr; | |
56 | struct rpma_mr_local *msg_mr; | |
57 | }; | |
58 | ||
59 | static inline int client_io_flush(struct thread_data *td, | |
60 | struct io_u *first_io_u, struct io_u *last_io_u, | |
61 | unsigned long long int len); | |
62 | ||
4ef7dd21 | 63 | static int client_get_io_u_index(struct ibv_wc *wc, unsigned int *io_u_index); |
e4c4625f JM |
64 | |
65 | static int client_init(struct thread_data *td) | |
66 | { | |
67 | struct librpma_fio_client_data *ccd; | |
68 | struct client_data *cd; | |
69 | uint32_t write_num; | |
70 | struct rpma_conn_cfg *cfg = NULL; | |
71 | int ret; | |
72 | ||
73 | /* | |
74 | * not supported: | |
75 | * - readwrite = read / trim / randread / randtrim / | |
76 | * / rw / randrw / trimwrite | |
77 | */ | |
78 | if (td_read(td) || td_trim(td)) { | |
79 | td_verror(td, EINVAL, "Not supported mode."); | |
80 | return -1; | |
81 | } | |
82 | ||
83 | /* allocate client's data */ | |
84 | cd = calloc(1, sizeof(*cd)); | |
85 | if (cd == NULL) { | |
86 | td_verror(td, errno, "calloc"); | |
87 | return -1; | |
88 | } | |
89 | ||
90 | /* | |
91 | * Calculate the required number of WRITEs and FLUSHes. | |
92 | * | |
93 | * Note: Each flush is a request (SEND) and response (RECV) pair. | |
94 | */ | |
95 | if (td_random(td)) { | |
96 | write_num = td->o.iodepth; /* WRITE * N */ | |
97 | cd->msg_num = td->o.iodepth; /* FLUSH * N */ | |
98 | } else { | |
99 | if (td->o.sync_io) { | |
100 | write_num = 1; /* WRITE */ | |
101 | cd->msg_num = 1; /* FLUSH */ | |
102 | } else { | |
103 | write_num = td->o.iodepth; /* WRITE * N */ | |
104 | /* | |
105 | * FLUSH * B where: | |
106 | * - B == ceil(iodepth / iodepth_batch) | |
107 | * which is the number of batches for N writes | |
108 | */ | |
109 | cd->msg_num = LIBRPMA_FIO_CEIL(td->o.iodepth, | |
110 | td->o.iodepth_batch); | |
111 | } | |
112 | } | |
113 | ||
114 | /* create a connection configuration object */ | |
115 | if ((ret = rpma_conn_cfg_new(&cfg))) { | |
116 | librpma_td_verror(td, ret, "rpma_conn_cfg_new"); | |
117 | goto err_free_cd; | |
118 | } | |
119 | ||
120 | /* | |
121 | * Calculate the required queue sizes where: | |
122 | * - the send queue (SQ) has to be big enough to accommodate | |
123 | * all io_us (WRITEs) and all flush requests (SENDs) | |
124 | * - the receive queue (RQ) has to be big enough to accommodate | |
125 | * all flush responses (RECVs) | |
126 | * - the completion queue (CQ) has to be big enough to accommodate all | |
127 | * success and error completions (sq_size + rq_size) | |
128 | */ | |
129 | if ((ret = rpma_conn_cfg_set_sq_size(cfg, write_num + cd->msg_num))) { | |
130 | librpma_td_verror(td, ret, "rpma_conn_cfg_set_sq_size"); | |
131 | goto err_cfg_delete; | |
132 | } | |
133 | if ((ret = rpma_conn_cfg_set_rq_size(cfg, cd->msg_num))) { | |
134 | librpma_td_verror(td, ret, "rpma_conn_cfg_set_rq_size"); | |
135 | goto err_cfg_delete; | |
136 | } | |
137 | if ((ret = rpma_conn_cfg_set_cq_size(cfg, write_num + cd->msg_num * 2))) { | |
138 | librpma_td_verror(td, ret, "rpma_conn_cfg_set_cq_size"); | |
139 | goto err_cfg_delete; | |
140 | } | |
141 | ||
142 | if (librpma_fio_client_init(td, cfg)) | |
143 | goto err_cfg_delete; | |
144 | ||
145 | ccd = td->io_ops_data; | |
146 | ||
147 | if (ccd->ws->direct_write_to_pmem && | |
148 | ccd->server_mr_flush_type == RPMA_FLUSH_TYPE_PERSISTENT && | |
149 | td->thread_number == 1) { | |
150 | /* XXX log_info mixes with the JSON output */ | |
151 | log_err( | |
152 | "Note: The server side supports Direct Write to PMem and it is equipped with PMem (direct_write_to_pmem).\n" | |
153 | "You can use librpma_client and librpma_server engines for better performance instead of GPSPM.\n"); | |
154 | } | |
155 | ||
156 | /* validate the server's RQ capacity */ | |
157 | if (cd->msg_num > ccd->ws->max_msg_num) { | |
158 | log_err( | |
159 | "server's RQ size (iodepth) too small to handle the client's workspace requirements (%u < %u)\n", | |
160 | ccd->ws->max_msg_num, cd->msg_num); | |
161 | goto err_cleanup_common; | |
162 | } | |
163 | ||
164 | if ((ret = rpma_conn_cfg_delete(&cfg))) { | |
165 | librpma_td_verror(td, ret, "rpma_conn_cfg_delete"); | |
166 | /* non fatal error - continue */ | |
167 | } | |
168 | ||
169 | ccd->flush = client_io_flush; | |
170 | ccd->get_io_u_index = client_get_io_u_index; | |
171 | ccd->client_data = cd; | |
172 | ||
173 | return 0; | |
174 | ||
175 | err_cleanup_common: | |
176 | librpma_fio_client_cleanup(td); | |
177 | ||
178 | err_cfg_delete: | |
179 | (void) rpma_conn_cfg_delete(&cfg); | |
180 | ||
181 | err_free_cd: | |
182 | free(cd); | |
183 | ||
184 | return -1; | |
185 | } | |
186 | ||
187 | static int client_post_init(struct thread_data *td) | |
188 | { | |
189 | struct librpma_fio_client_data *ccd = td->io_ops_data; | |
190 | struct client_data *cd = ccd->client_data; | |
191 | unsigned int io_us_msgs_size; | |
192 | int ret; | |
193 | ||
194 | /* message buffers initialization and registration */ | |
195 | io_us_msgs_size = cd->msg_num * IO_U_BUF_LEN; | |
196 | if ((ret = posix_memalign((void **)&cd->io_us_msgs, page_size, | |
197 | io_us_msgs_size))) { | |
198 | td_verror(td, ret, "posix_memalign"); | |
199 | return ret; | |
200 | } | |
201 | if ((ret = rpma_mr_reg(ccd->peer, cd->io_us_msgs, io_us_msgs_size, | |
202 | RPMA_MR_USAGE_SEND | RPMA_MR_USAGE_RECV, | |
203 | &cd->msg_mr))) { | |
204 | librpma_td_verror(td, ret, "rpma_mr_reg"); | |
205 | return ret; | |
206 | } | |
207 | ||
208 | return librpma_fio_client_post_init(td); | |
209 | } | |
210 | ||
211 | static void client_cleanup(struct thread_data *td) | |
212 | { | |
213 | struct librpma_fio_client_data *ccd = td->io_ops_data; | |
214 | struct client_data *cd; | |
215 | size_t flush_req_size; | |
216 | size_t io_u_buf_off; | |
217 | size_t send_offset; | |
218 | void *send_ptr; | |
219 | int ret; | |
220 | ||
221 | if (ccd == NULL) | |
222 | return; | |
223 | ||
224 | cd = ccd->client_data; | |
225 | if (cd == NULL) { | |
226 | librpma_fio_client_cleanup(td); | |
227 | return; | |
228 | } | |
229 | ||
230 | /* | |
231 | * Make sure all SEND completions are collected ergo there are free | |
232 | * slots in the SQ for the last SEND message. | |
233 | * | |
234 | * Note: If any operation will fail we still can send the termination | |
235 | * notice. | |
236 | */ | |
237 | (void) librpma_fio_client_io_complete_all_sends(td); | |
238 | ||
239 | /* prepare the last flush message and pack it to the send buffer */ | |
240 | flush_req_size = gpspm_flush_request__get_packed_size(&Flush_req_last); | |
241 | if (flush_req_size > MAX_MSG_SIZE) { | |
242 | log_err( | |
243 | "Packed flush request size is bigger than available send buffer space (%zu > %d\n", | |
244 | flush_req_size, MAX_MSG_SIZE); | |
245 | } else { | |
246 | io_u_buf_off = IO_U_NEXT_BUF_OFF_CLIENT(cd); | |
247 | send_offset = io_u_buf_off + SEND_OFFSET; | |
248 | send_ptr = cd->io_us_msgs + send_offset; | |
249 | (void) gpspm_flush_request__pack(&Flush_req_last, send_ptr); | |
250 | ||
251 | /* send the flush message */ | |
252 | if ((ret = rpma_send(ccd->conn, cd->msg_mr, send_offset, | |
253 | flush_req_size, RPMA_F_COMPLETION_ALWAYS, | |
254 | NULL))) | |
255 | librpma_td_verror(td, ret, "rpma_send"); | |
256 | ||
257 | ++ccd->op_send_posted; | |
258 | ||
259 | /* Wait for the SEND to complete */ | |
260 | (void) librpma_fio_client_io_complete_all_sends(td); | |
261 | } | |
262 | ||
263 | /* deregister the messaging buffer memory */ | |
264 | if ((ret = rpma_mr_dereg(&cd->msg_mr))) | |
265 | librpma_td_verror(td, ret, "rpma_mr_dereg"); | |
266 | ||
267 | free(ccd->client_data); | |
268 | ||
269 | librpma_fio_client_cleanup(td); | |
270 | } | |
271 | ||
272 | static inline int client_io_flush(struct thread_data *td, | |
273 | struct io_u *first_io_u, struct io_u *last_io_u, | |
274 | unsigned long long int len) | |
275 | { | |
276 | struct librpma_fio_client_data *ccd = td->io_ops_data; | |
277 | struct client_data *cd = ccd->client_data; | |
278 | size_t io_u_buf_off = IO_U_NEXT_BUF_OFF_CLIENT(cd); | |
279 | size_t send_offset = io_u_buf_off + SEND_OFFSET; | |
280 | size_t recv_offset = io_u_buf_off + RECV_OFFSET; | |
281 | void *send_ptr = cd->io_us_msgs + send_offset; | |
282 | void *recv_ptr = cd->io_us_msgs + recv_offset; | |
283 | GPSPMFlushRequest flush_req = GPSPM_FLUSH_REQUEST__INIT; | |
284 | size_t flush_req_size = 0; | |
285 | int ret; | |
286 | ||
287 | /* prepare a response buffer */ | |
288 | if ((ret = rpma_recv(ccd->conn, cd->msg_mr, recv_offset, MAX_MSG_SIZE, | |
289 | recv_ptr))) { | |
290 | librpma_td_verror(td, ret, "rpma_recv"); | |
291 | return -1; | |
292 | } | |
293 | ||
294 | /* prepare a flush message and pack it to a send buffer */ | |
295 | flush_req.offset = first_io_u->offset; | |
296 | flush_req.length = len; | |
297 | flush_req.op_context = last_io_u->index; | |
298 | flush_req_size = gpspm_flush_request__get_packed_size(&flush_req); | |
299 | if (flush_req_size > MAX_MSG_SIZE) { | |
300 | log_err( | |
301 | "Packed flush request size is bigger than available send buffer space (%" | |
302 | PRIu64 " > %d\n", flush_req_size, MAX_MSG_SIZE); | |
303 | return -1; | |
304 | } | |
305 | (void) gpspm_flush_request__pack(&flush_req, send_ptr); | |
306 | ||
307 | /* send the flush message */ | |
308 | if ((ret = rpma_send(ccd->conn, cd->msg_mr, send_offset, flush_req_size, | |
309 | RPMA_F_COMPLETION_ALWAYS, NULL))) { | |
310 | librpma_td_verror(td, ret, "rpma_send"); | |
311 | return -1; | |
312 | } | |
313 | ||
314 | ++ccd->op_send_posted; | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
4ef7dd21 | 319 | static int client_get_io_u_index(struct ibv_wc *wc, unsigned int *io_u_index) |
e4c4625f JM |
320 | { |
321 | GPSPMFlushResponse *flush_resp; | |
322 | ||
4ef7dd21 | 323 | if (wc->opcode != IBV_WC_RECV) |
e4c4625f JM |
324 | return 0; |
325 | ||
326 | /* unpack a response from the received buffer */ | |
327 | flush_resp = gpspm_flush_response__unpack(NULL, | |
4ef7dd21 | 328 | wc->byte_len, (void *)wc->wr_id); |
e4c4625f JM |
329 | if (flush_resp == NULL) { |
330 | log_err("Cannot unpack the flush response buffer\n"); | |
331 | return -1; | |
332 | } | |
333 | ||
334 | memcpy(io_u_index, &flush_resp->op_context, sizeof(*io_u_index)); | |
335 | ||
336 | gpspm_flush_response__free_unpacked(flush_resp, NULL); | |
337 | ||
338 | return 1; | |
339 | } | |
340 | ||
341 | FIO_STATIC struct ioengine_ops ioengine_client = { | |
342 | .name = "librpma_gpspm_client", | |
343 | .version = FIO_IOOPS_VERSION, | |
344 | .init = client_init, | |
345 | .post_init = client_post_init, | |
346 | .get_file_size = librpma_fio_client_get_file_size, | |
347 | .open_file = librpma_fio_file_nop, | |
348 | .queue = librpma_fio_client_queue, | |
349 | .commit = librpma_fio_client_commit, | |
350 | .getevents = librpma_fio_client_getevents, | |
351 | .event = librpma_fio_client_event, | |
352 | .errdetails = librpma_fio_client_errdetails, | |
353 | .close_file = librpma_fio_file_nop, | |
354 | .cleanup = client_cleanup, | |
355 | .flags = FIO_DISKLESSIO, | |
356 | .options = librpma_fio_options, | |
357 | .option_struct_size = sizeof(struct librpma_fio_options_values), | |
358 | }; | |
359 | ||
360 | /* server side implementation */ | |
361 | ||
362 | #define IO_U_BUFF_OFF_SERVER(i) (i * IO_U_BUF_LEN) | |
363 | ||
364 | struct server_data { | |
365 | /* aligned td->orig_buffer */ | |
366 | char *orig_buffer_aligned; | |
367 | ||
368 | /* resources for messaging buffer from DRAM allocated by fio */ | |
369 | struct rpma_mr_local *msg_mr; | |
370 | ||
371 | uint32_t msg_sqe_available; /* # of free SQ slots */ | |
372 | ||
373 | /* in-memory queues */ | |
4ef7dd21 | 374 | struct ibv_wc *msgs_queued; |
e4c4625f JM |
375 | uint32_t msg_queued_nr; |
376 | }; | |
377 | ||
378 | static int server_init(struct thread_data *td) | |
379 | { | |
380 | struct librpma_fio_server_data *csd; | |
381 | struct server_data *sd; | |
382 | int ret = -1; | |
383 | ||
384 | if ((ret = librpma_fio_server_init(td))) | |
385 | return ret; | |
386 | ||
387 | csd = td->io_ops_data; | |
388 | ||
389 | /* allocate server's data */ | |
390 | sd = calloc(1, sizeof(*sd)); | |
391 | if (sd == NULL) { | |
392 | td_verror(td, errno, "calloc"); | |
393 | goto err_server_cleanup; | |
394 | } | |
395 | ||
396 | /* allocate in-memory queue */ | |
397 | sd->msgs_queued = calloc(td->o.iodepth, sizeof(*sd->msgs_queued)); | |
398 | if (sd->msgs_queued == NULL) { | |
399 | td_verror(td, errno, "calloc"); | |
400 | goto err_free_sd; | |
401 | } | |
402 | ||
403 | /* | |
404 | * Assure a single io_u buffer can store both SEND and RECV messages and | |
405 | * an io_us buffer allocation is page-size-aligned which is required | |
406 | * to register for RDMA. User-provided values are intentionally ignored. | |
407 | */ | |
408 | td->o.max_bs[DDIR_READ] = IO_U_BUF_LEN; | |
409 | td->o.mem_align = page_size; | |
410 | ||
411 | csd->server_data = sd; | |
412 | ||
413 | return 0; | |
414 | ||
415 | err_free_sd: | |
416 | free(sd); | |
417 | ||
418 | err_server_cleanup: | |
419 | librpma_fio_server_cleanup(td); | |
420 | ||
421 | return -1; | |
422 | } | |
423 | ||
424 | static int server_post_init(struct thread_data *td) | |
425 | { | |
426 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
427 | struct server_data *sd = csd->server_data; | |
428 | size_t io_us_size; | |
429 | size_t io_u_buflen; | |
430 | int ret; | |
431 | ||
432 | /* | |
433 | * td->orig_buffer is not aligned. The engine requires aligned io_us | |
fc002f14 | 434 | * so FIO aligns up the address using the formula below. |
e4c4625f JM |
435 | */ |
436 | sd->orig_buffer_aligned = PTR_ALIGN(td->orig_buffer, page_mask) + | |
437 | td->o.mem_align; | |
438 | ||
439 | /* | |
440 | * XXX | |
441 | * Each io_u message buffer contains recv and send messages. | |
442 | * Aligning each of those buffers may potentially give | |
443 | * some performance benefits. | |
444 | */ | |
445 | io_u_buflen = td_max_bs(td); | |
446 | ||
447 | /* check whether io_u buffer is big enough */ | |
448 | if (io_u_buflen < IO_U_BUF_LEN) { | |
449 | log_err( | |
450 | "blocksize too small to accommodate assumed maximal request/response pair size (%" PRIu64 " < %d)\n", | |
451 | io_u_buflen, IO_U_BUF_LEN); | |
452 | return -1; | |
453 | } | |
454 | ||
455 | /* | |
456 | * td->orig_buffer_size beside the space really consumed by io_us | |
457 | * has paddings which can be omitted for the memory registration. | |
458 | */ | |
459 | io_us_size = (unsigned long long)io_u_buflen * | |
460 | (unsigned long long)td->o.iodepth; | |
461 | ||
462 | if ((ret = rpma_mr_reg(csd->peer, sd->orig_buffer_aligned, io_us_size, | |
463 | RPMA_MR_USAGE_SEND | RPMA_MR_USAGE_RECV, | |
464 | &sd->msg_mr))) { | |
465 | librpma_td_verror(td, ret, "rpma_mr_reg"); | |
466 | return -1; | |
467 | } | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | static void server_cleanup(struct thread_data *td) | |
473 | { | |
474 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
475 | struct server_data *sd; | |
476 | int ret; | |
477 | ||
478 | if (csd == NULL) | |
479 | return; | |
480 | ||
481 | sd = csd->server_data; | |
482 | ||
483 | if (sd != NULL) { | |
484 | /* rpma_mr_dereg(messaging buffer from DRAM) */ | |
485 | if ((ret = rpma_mr_dereg(&sd->msg_mr))) | |
486 | librpma_td_verror(td, ret, "rpma_mr_dereg"); | |
487 | ||
488 | free(sd->msgs_queued); | |
489 | free(sd); | |
490 | } | |
491 | ||
492 | librpma_fio_server_cleanup(td); | |
493 | } | |
494 | ||
495 | static int prepare_connection(struct thread_data *td, | |
496 | struct rpma_conn_req *conn_req) | |
497 | { | |
498 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
499 | struct server_data *sd = csd->server_data; | |
500 | int ret; | |
501 | int i; | |
502 | ||
503 | /* prepare buffers for a flush requests */ | |
504 | sd->msg_sqe_available = td->o.iodepth; | |
505 | for (i = 0; i < td->o.iodepth; i++) { | |
506 | size_t offset_recv_msg = IO_U_BUFF_OFF_SERVER(i) + RECV_OFFSET; | |
507 | if ((ret = rpma_conn_req_recv(conn_req, sd->msg_mr, | |
508 | offset_recv_msg, MAX_MSG_SIZE, | |
509 | (const void *)(uintptr_t)i))) { | |
510 | librpma_td_verror(td, ret, "rpma_conn_req_recv"); | |
511 | return ret; | |
512 | } | |
513 | } | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | static int server_open_file(struct thread_data *td, struct fio_file *f) | |
519 | { | |
520 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
521 | struct rpma_conn_cfg *cfg = NULL; | |
522 | uint16_t max_msg_num = td->o.iodepth; | |
523 | int ret; | |
524 | ||
525 | csd->prepare_connection = prepare_connection; | |
526 | ||
527 | /* create a connection configuration object */ | |
528 | if ((ret = rpma_conn_cfg_new(&cfg))) { | |
529 | librpma_td_verror(td, ret, "rpma_conn_cfg_new"); | |
530 | return -1; | |
531 | } | |
532 | ||
533 | /* | |
534 | * Calculate the required queue sizes where: | |
535 | * - the send queue (SQ) has to be big enough to accommodate | |
536 | * all possible flush requests (SENDs) | |
537 | * - the receive queue (RQ) has to be big enough to accommodate | |
538 | * all flush responses (RECVs) | |
539 | * - the completion queue (CQ) has to be big enough to accommodate | |
540 | * all success and error completions (sq_size + rq_size) | |
541 | */ | |
542 | if ((ret = rpma_conn_cfg_set_sq_size(cfg, max_msg_num))) { | |
543 | librpma_td_verror(td, ret, "rpma_conn_cfg_set_sq_size"); | |
544 | goto err_cfg_delete; | |
545 | } | |
546 | if ((ret = rpma_conn_cfg_set_rq_size(cfg, max_msg_num))) { | |
547 | librpma_td_verror(td, ret, "rpma_conn_cfg_set_rq_size"); | |
548 | goto err_cfg_delete; | |
549 | } | |
550 | if ((ret = rpma_conn_cfg_set_cq_size(cfg, max_msg_num * 2))) { | |
551 | librpma_td_verror(td, ret, "rpma_conn_cfg_set_cq_size"); | |
552 | goto err_cfg_delete; | |
553 | } | |
554 | ||
555 | ret = librpma_fio_server_open_file(td, f, cfg); | |
556 | ||
557 | err_cfg_delete: | |
558 | (void) rpma_conn_cfg_delete(&cfg); | |
559 | ||
560 | return ret; | |
561 | } | |
562 | ||
4ef7dd21 | 563 | static int server_qe_process(struct thread_data *td, struct ibv_wc *wc) |
e4c4625f JM |
564 | { |
565 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
566 | struct server_data *sd = csd->server_data; | |
567 | GPSPMFlushRequest *flush_req; | |
568 | GPSPMFlushResponse flush_resp = GPSPM_FLUSH_RESPONSE__INIT; | |
569 | size_t flush_resp_size = 0; | |
570 | size_t send_buff_offset; | |
571 | size_t recv_buff_offset; | |
572 | size_t io_u_buff_offset; | |
573 | void *send_buff_ptr; | |
574 | void *recv_buff_ptr; | |
575 | void *op_ptr; | |
576 | int msg_index; | |
577 | int ret; | |
578 | ||
579 | /* calculate SEND/RECV pair parameters */ | |
4ef7dd21 | 580 | msg_index = (int)(uintptr_t)wc->wr_id; |
e4c4625f JM |
581 | io_u_buff_offset = IO_U_BUFF_OFF_SERVER(msg_index); |
582 | send_buff_offset = io_u_buff_offset + SEND_OFFSET; | |
583 | recv_buff_offset = io_u_buff_offset + RECV_OFFSET; | |
584 | send_buff_ptr = sd->orig_buffer_aligned + send_buff_offset; | |
585 | recv_buff_ptr = sd->orig_buffer_aligned + recv_buff_offset; | |
586 | ||
587 | /* unpack a flush request from the received buffer */ | |
4ef7dd21 | 588 | flush_req = gpspm_flush_request__unpack(NULL, wc->byte_len, |
e4c4625f JM |
589 | recv_buff_ptr); |
590 | if (flush_req == NULL) { | |
591 | log_err("cannot unpack the flush request buffer\n"); | |
592 | goto err_terminate; | |
593 | } | |
594 | ||
595 | if (IS_NOT_THE_LAST_MESSAGE(flush_req)) { | |
596 | op_ptr = csd->ws_ptr + flush_req->offset; | |
597 | pmem_persist(op_ptr, flush_req->length); | |
598 | } else { | |
599 | /* | |
600 | * This is the last message - the client is done. | |
601 | */ | |
602 | gpspm_flush_request__free_unpacked(flush_req, NULL); | |
603 | td->done = true; | |
604 | return 0; | |
605 | } | |
606 | ||
607 | /* initiate the next receive operation */ | |
608 | if ((ret = rpma_recv(csd->conn, sd->msg_mr, recv_buff_offset, | |
609 | MAX_MSG_SIZE, | |
610 | (const void *)(uintptr_t)msg_index))) { | |
611 | librpma_td_verror(td, ret, "rpma_recv"); | |
612 | goto err_free_unpacked; | |
613 | } | |
614 | ||
615 | /* prepare a flush response and pack it to a send buffer */ | |
616 | flush_resp.op_context = flush_req->op_context; | |
617 | flush_resp_size = gpspm_flush_response__get_packed_size(&flush_resp); | |
618 | if (flush_resp_size > MAX_MSG_SIZE) { | |
619 | log_err( | |
620 | "Size of the packed flush response is bigger than the available space of the send buffer (%" | |
621 | PRIu64 " > %i\n", flush_resp_size, MAX_MSG_SIZE); | |
622 | goto err_free_unpacked; | |
623 | } | |
624 | ||
625 | (void) gpspm_flush_response__pack(&flush_resp, send_buff_ptr); | |
626 | ||
627 | /* send the flush response */ | |
628 | if ((ret = rpma_send(csd->conn, sd->msg_mr, send_buff_offset, | |
629 | flush_resp_size, RPMA_F_COMPLETION_ALWAYS, NULL))) { | |
630 | librpma_td_verror(td, ret, "rpma_send"); | |
631 | goto err_free_unpacked; | |
632 | } | |
633 | --sd->msg_sqe_available; | |
634 | ||
635 | gpspm_flush_request__free_unpacked(flush_req, NULL); | |
636 | ||
637 | return 0; | |
638 | ||
639 | err_free_unpacked: | |
640 | gpspm_flush_request__free_unpacked(flush_req, NULL); | |
641 | ||
642 | err_terminate: | |
643 | td->terminate = true; | |
644 | ||
645 | return -1; | |
646 | } | |
647 | ||
648 | static inline int server_queue_process(struct thread_data *td) | |
649 | { | |
650 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
651 | struct server_data *sd = csd->server_data; | |
652 | int ret; | |
653 | int i; | |
654 | ||
655 | /* min(# of queue entries, # of SQ entries available) */ | |
656 | uint32_t qes_to_process = min(sd->msg_queued_nr, sd->msg_sqe_available); | |
657 | if (qes_to_process == 0) | |
658 | return 0; | |
659 | ||
660 | /* process queued completions */ | |
661 | for (i = 0; i < qes_to_process; ++i) { | |
662 | if ((ret = server_qe_process(td, &sd->msgs_queued[i]))) | |
663 | return ret; | |
664 | } | |
665 | ||
666 | /* progress the queue */ | |
667 | for (i = 0; i < sd->msg_queued_nr - qes_to_process; ++i) { | |
668 | memcpy(&sd->msgs_queued[i], | |
669 | &sd->msgs_queued[qes_to_process + i], | |
670 | sizeof(sd->msgs_queued[i])); | |
671 | } | |
672 | ||
673 | sd->msg_queued_nr -= qes_to_process; | |
674 | ||
675 | return 0; | |
676 | } | |
677 | ||
678 | static int server_cmpl_process(struct thread_data *td) | |
679 | { | |
680 | struct librpma_fio_server_data *csd = td->io_ops_data; | |
681 | struct server_data *sd = csd->server_data; | |
4ef7dd21 | 682 | struct ibv_wc *wc = &sd->msgs_queued[sd->msg_queued_nr]; |
6a229978 | 683 | struct librpma_fio_options_values *o = td->eo; |
e4c4625f JM |
684 | int ret; |
685 | ||
4ef7dd21 | 686 | ret = rpma_cq_get_wc(csd->cq, 1, wc, NULL); |
e4c4625f | 687 | if (ret == RPMA_E_NO_COMPLETION) { |
6a229978 | 688 | if (o->busy_wait_polling == 0) { |
4ef7dd21 | 689 | ret = rpma_cq_wait(csd->cq); |
6a229978 OS |
690 | if (ret == RPMA_E_NO_COMPLETION) { |
691 | /* lack of completion is not an error */ | |
692 | return 0; | |
693 | } else if (ret != 0) { | |
4ef7dd21 | 694 | librpma_td_verror(td, ret, "rpma_cq_wait"); |
6a229978 OS |
695 | goto err_terminate; |
696 | } | |
697 | ||
4ef7dd21 | 698 | ret = rpma_cq_get_wc(csd->cq, 1, wc, NULL); |
6a229978 OS |
699 | if (ret == RPMA_E_NO_COMPLETION) { |
700 | /* lack of completion is not an error */ | |
701 | return 0; | |
702 | } else if (ret != 0) { | |
4ef7dd21 | 703 | librpma_td_verror(td, ret, "rpma_cq_get_wc"); |
6a229978 OS |
704 | goto err_terminate; |
705 | } | |
706 | } else { | |
707 | /* lack of completion is not an error */ | |
708 | return 0; | |
709 | } | |
e4c4625f | 710 | } else if (ret != 0) { |
4ef7dd21 | 711 | librpma_td_verror(td, ret, "rpma_cq_get_wc"); |
e4c4625f JM |
712 | goto err_terminate; |
713 | } | |
714 | ||
715 | /* validate the completion */ | |
4ef7dd21 | 716 | if (wc->status != IBV_WC_SUCCESS) |
e4c4625f JM |
717 | goto err_terminate; |
718 | ||
4ef7dd21 | 719 | if (wc->opcode == IBV_WC_RECV) |
e4c4625f | 720 | ++sd->msg_queued_nr; |
4ef7dd21 | 721 | else if (wc->opcode == IBV_WC_SEND) |
e4c4625f JM |
722 | ++sd->msg_sqe_available; |
723 | ||
724 | return 0; | |
725 | ||
726 | err_terminate: | |
727 | td->terminate = true; | |
728 | ||
729 | return -1; | |
730 | } | |
731 | ||
732 | static enum fio_q_status server_queue(struct thread_data *td, struct io_u *io_u) | |
733 | { | |
734 | do { | |
735 | if (server_cmpl_process(td)) | |
736 | return FIO_Q_BUSY; | |
737 | ||
738 | if (server_queue_process(td)) | |
739 | return FIO_Q_BUSY; | |
740 | ||
741 | } while (!td->done); | |
742 | ||
743 | return FIO_Q_COMPLETED; | |
744 | } | |
745 | ||
746 | FIO_STATIC struct ioengine_ops ioengine_server = { | |
747 | .name = "librpma_gpspm_server", | |
748 | .version = FIO_IOOPS_VERSION, | |
749 | .init = server_init, | |
750 | .post_init = server_post_init, | |
751 | .open_file = server_open_file, | |
752 | .close_file = librpma_fio_server_close_file, | |
753 | .queue = server_queue, | |
754 | .invalidate = librpma_fio_file_nop, | |
755 | .cleanup = server_cleanup, | |
756 | .flags = FIO_SYNCIO, | |
757 | .options = librpma_fio_options, | |
758 | .option_struct_size = sizeof(struct librpma_fio_options_values), | |
759 | }; | |
760 | ||
761 | /* register both engines */ | |
762 | ||
763 | static void fio_init fio_librpma_gpspm_register(void) | |
764 | { | |
765 | register_ioengine(&ioengine_client); | |
766 | register_ioengine(&ioengine_server); | |
767 | } | |
768 | ||
769 | static void fio_exit fio_librpma_gpspm_unregister(void) | |
770 | { | |
771 | unregister_ioengine(&ioengine_client); | |
772 | unregister_ioengine(&ioengine_server); | |
773 | } |