| 1 | /* |
| 2 | * RDMA I/O engine |
| 3 | * |
| 4 | * RDMA I/O engine based on the IB verbs and RDMA/CM user space libraries. |
| 5 | * Supports both RDMA memory semantics and channel semantics |
| 6 | * for the InfiniBand, RoCE and iWARP protocols. |
| 7 | * |
| 8 | * You will need the Linux RDMA software installed, either |
| 9 | * from your Linux distributor or directly from openfabrics.org: |
| 10 | * |
| 11 | * http://www.openfabrics.org/downloads/OFED/ |
| 12 | * |
| 13 | * Exchanging steps of RDMA ioengine control messages: |
| 14 | * 1. client side sends test mode (RDMA_WRITE/RDMA_READ/SEND) |
| 15 | * to server side. |
| 16 | * 2. server side parses test mode, and sends back confirmation |
| 17 | * to client side. In RDMA WRITE/READ test, this confirmation |
| 18 | * includes memory information, such as rkey, address. |
| 19 | * 3. client side initiates test loop. |
| 20 | * 4. In RDMA WRITE/READ test, client side sends a completion |
| 21 | * notification to server side. Server side updates its |
| 22 | * td->done as true. |
| 23 | * |
| 24 | */ |
| 25 | #include <stdio.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <unistd.h> |
| 28 | #include <errno.h> |
| 29 | #include <assert.h> |
| 30 | #include <netinet/in.h> |
| 31 | #include <arpa/inet.h> |
| 32 | #include <netdb.h> |
| 33 | #include <sys/poll.h> |
| 34 | #include <sys/types.h> |
| 35 | #include <sys/socket.h> |
| 36 | #include <sys/time.h> |
| 37 | #include <sys/resource.h> |
| 38 | |
| 39 | #include <pthread.h> |
| 40 | #include <inttypes.h> |
| 41 | |
| 42 | #include "../fio.h" |
| 43 | #include "../hash.h" |
| 44 | |
| 45 | #include <rdma/rdma_cma.h> |
| 46 | #include <infiniband/arch.h> |
| 47 | |
| 48 | #define FIO_RDMA_MAX_IO_DEPTH 512 |
| 49 | |
| 50 | enum rdma_io_mode { |
| 51 | FIO_RDMA_UNKNOWN = 0, |
| 52 | FIO_RDMA_MEM_WRITE, |
| 53 | FIO_RDMA_MEM_READ, |
| 54 | FIO_RDMA_CHA_SEND, |
| 55 | FIO_RDMA_CHA_RECV |
| 56 | }; |
| 57 | |
| 58 | struct rdmaio_options { |
| 59 | struct thread_data *td; |
| 60 | unsigned int port; |
| 61 | enum rdma_io_mode verb; |
| 62 | }; |
| 63 | |
| 64 | static int str_hostname_cb(void *data, const char *input) |
| 65 | { |
| 66 | struct rdmaio_options *o = data; |
| 67 | |
| 68 | if (o->td->o.filename) |
| 69 | free(o->td->o.filename); |
| 70 | o->td->o.filename = strdup(input); |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | static struct fio_option options[] = { |
| 75 | { |
| 76 | .name = "hostname", |
| 77 | .lname = "rdma engine hostname", |
| 78 | .type = FIO_OPT_STR_STORE, |
| 79 | .cb = str_hostname_cb, |
| 80 | .help = "Hostname for RDMA IO engine", |
| 81 | .category = FIO_OPT_C_ENGINE, |
| 82 | .group = FIO_OPT_G_RDMA, |
| 83 | }, |
| 84 | { |
| 85 | .name = "port", |
| 86 | .lname = "rdma engine port", |
| 87 | .type = FIO_OPT_INT, |
| 88 | .off1 = offsetof(struct rdmaio_options, port), |
| 89 | .minval = 1, |
| 90 | .maxval = 65535, |
| 91 | .help = "Port to use for RDMA connections", |
| 92 | .category = FIO_OPT_C_ENGINE, |
| 93 | .group = FIO_OPT_G_RDMA, |
| 94 | }, |
| 95 | { |
| 96 | .name = "verb", |
| 97 | .lname = "RDMA engine verb", |
| 98 | .alias = "proto", |
| 99 | .type = FIO_OPT_STR, |
| 100 | .off1 = offsetof(struct rdmaio_options, verb), |
| 101 | .help = "RDMA engine verb", |
| 102 | .def = "write", |
| 103 | .posval = { |
| 104 | { .ival = "write", |
| 105 | .oval = FIO_RDMA_MEM_WRITE, |
| 106 | .help = "Memory Write", |
| 107 | }, |
| 108 | { .ival = "read", |
| 109 | .oval = FIO_RDMA_MEM_READ, |
| 110 | .help = "Memory Read", |
| 111 | }, |
| 112 | { .ival = "send", |
| 113 | .oval = FIO_RDMA_CHA_SEND, |
| 114 | .help = "Posted Send", |
| 115 | }, |
| 116 | { .ival = "recv", |
| 117 | .oval = FIO_RDMA_CHA_RECV, |
| 118 | .help = "Posted Receive", |
| 119 | }, |
| 120 | }, |
| 121 | .category = FIO_OPT_C_ENGINE, |
| 122 | .group = FIO_OPT_G_RDMA, |
| 123 | }, |
| 124 | { |
| 125 | .name = NULL, |
| 126 | }, |
| 127 | }; |
| 128 | |
| 129 | struct remote_u { |
| 130 | uint64_t buf; |
| 131 | uint32_t rkey; |
| 132 | uint32_t size; |
| 133 | }; |
| 134 | |
| 135 | struct rdma_info_blk { |
| 136 | uint32_t mode; /* channel semantic or memory semantic */ |
| 137 | uint32_t nr; /* client: io depth |
| 138 | server: number of records for memory semantic |
| 139 | */ |
| 140 | uint32_t max_bs; /* maximum block size */ |
| 141 | struct remote_u rmt_us[FIO_RDMA_MAX_IO_DEPTH]; |
| 142 | }; |
| 143 | |
| 144 | struct rdma_io_u_data { |
| 145 | uint64_t wr_id; |
| 146 | struct ibv_send_wr sq_wr; |
| 147 | struct ibv_recv_wr rq_wr; |
| 148 | struct ibv_sge rdma_sgl; |
| 149 | }; |
| 150 | |
| 151 | struct rdmaio_data { |
| 152 | int is_client; |
| 153 | enum rdma_io_mode rdma_protocol; |
| 154 | char host[64]; |
| 155 | struct sockaddr_in addr; |
| 156 | |
| 157 | struct ibv_recv_wr rq_wr; |
| 158 | struct ibv_sge recv_sgl; |
| 159 | struct rdma_info_blk recv_buf; |
| 160 | struct ibv_mr *recv_mr; |
| 161 | |
| 162 | struct ibv_send_wr sq_wr; |
| 163 | struct ibv_sge send_sgl; |
| 164 | struct rdma_info_blk send_buf; |
| 165 | struct ibv_mr *send_mr; |
| 166 | |
| 167 | struct ibv_comp_channel *channel; |
| 168 | struct ibv_cq *cq; |
| 169 | struct ibv_pd *pd; |
| 170 | struct ibv_qp *qp; |
| 171 | |
| 172 | pthread_t cmthread; |
| 173 | struct rdma_event_channel *cm_channel; |
| 174 | struct rdma_cm_id *cm_id; |
| 175 | struct rdma_cm_id *child_cm_id; |
| 176 | |
| 177 | int cq_event_num; |
| 178 | |
| 179 | struct remote_u *rmt_us; |
| 180 | int rmt_nr; |
| 181 | struct io_u **io_us_queued; |
| 182 | int io_u_queued_nr; |
| 183 | struct io_u **io_us_flight; |
| 184 | int io_u_flight_nr; |
| 185 | struct io_u **io_us_completed; |
| 186 | int io_u_completed_nr; |
| 187 | |
| 188 | struct frand_state rand_state; |
| 189 | }; |
| 190 | |
| 191 | static int client_recv(struct thread_data *td, struct ibv_wc *wc) |
| 192 | { |
| 193 | struct rdmaio_data *rd = td->io_ops->data; |
| 194 | unsigned int max_bs; |
| 195 | |
| 196 | if (wc->byte_len != sizeof(rd->recv_buf)) { |
| 197 | log_err("Received bogus data, size %d\n", wc->byte_len); |
| 198 | return 1; |
| 199 | } |
| 200 | |
| 201 | max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); |
| 202 | if (max_bs > ntohl(rd->recv_buf.max_bs)) { |
| 203 | log_err("fio: Server's block size (%d) must be greater than or " |
| 204 | "equal to the client's block size (%d)!\n", |
| 205 | ntohl(rd->recv_buf.max_bs), max_bs); |
| 206 | return 1; |
| 207 | } |
| 208 | |
| 209 | /* store mr info for MEMORY semantic */ |
| 210 | if ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) || |
| 211 | (rd->rdma_protocol == FIO_RDMA_MEM_READ)) { |
| 212 | /* struct flist_head *entry; */ |
| 213 | int i = 0; |
| 214 | |
| 215 | rd->rmt_nr = ntohl(rd->recv_buf.nr); |
| 216 | |
| 217 | for (i = 0; i < rd->rmt_nr; i++) { |
| 218 | rd->rmt_us[i].buf = ntohll(rd->recv_buf.rmt_us[i].buf); |
| 219 | rd->rmt_us[i].rkey = ntohl(rd->recv_buf.rmt_us[i].rkey); |
| 220 | rd->rmt_us[i].size = ntohl(rd->recv_buf.rmt_us[i].size); |
| 221 | |
| 222 | dprint(FD_IO, |
| 223 | "fio: Received rkey %x addr %" PRIx64 |
| 224 | " len %d from peer\n", rd->rmt_us[i].rkey, |
| 225 | rd->rmt_us[i].buf, rd->rmt_us[i].size); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static int server_recv(struct thread_data *td, struct ibv_wc *wc) |
| 233 | { |
| 234 | struct rdmaio_data *rd = td->io_ops->data; |
| 235 | unsigned int max_bs; |
| 236 | |
| 237 | if (wc->wr_id == FIO_RDMA_MAX_IO_DEPTH) { |
| 238 | rd->rdma_protocol = ntohl(rd->recv_buf.mode); |
| 239 | |
| 240 | /* CHANNEL semantic, do nothing */ |
| 241 | if (rd->rdma_protocol == FIO_RDMA_CHA_SEND) |
| 242 | rd->rdma_protocol = FIO_RDMA_CHA_RECV; |
| 243 | |
| 244 | max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); |
| 245 | if (max_bs < ntohl(rd->recv_buf.max_bs)) { |
| 246 | log_err("fio: Server's block size (%d) must be greater than or " |
| 247 | "equal to the client's block size (%d)!\n", |
| 248 | ntohl(rd->recv_buf.max_bs), max_bs); |
| 249 | return 1; |
| 250 | } |
| 251 | |
| 252 | } |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | static int cq_event_handler(struct thread_data *td, enum ibv_wc_opcode opcode) |
| 258 | { |
| 259 | struct rdmaio_data *rd = td->io_ops->data; |
| 260 | struct ibv_wc wc; |
| 261 | struct rdma_io_u_data *r_io_u_d; |
| 262 | int ret; |
| 263 | int compevnum = 0; |
| 264 | int i; |
| 265 | |
| 266 | while ((ret = ibv_poll_cq(rd->cq, 1, &wc)) == 1) { |
| 267 | ret = 0; |
| 268 | compevnum++; |
| 269 | |
| 270 | if (wc.status) { |
| 271 | log_err("fio: cq completion status %d(%s)\n", |
| 272 | wc.status, ibv_wc_status_str(wc.status)); |
| 273 | return -1; |
| 274 | } |
| 275 | |
| 276 | switch (wc.opcode) { |
| 277 | |
| 278 | case IBV_WC_RECV: |
| 279 | if (rd->is_client == 1) |
| 280 | ret = client_recv(td, &wc); |
| 281 | else |
| 282 | ret = server_recv(td, &wc); |
| 283 | |
| 284 | if (ret) |
| 285 | return -1; |
| 286 | |
| 287 | if (wc.wr_id == FIO_RDMA_MAX_IO_DEPTH) |
| 288 | break; |
| 289 | |
| 290 | for (i = 0; i < rd->io_u_flight_nr; i++) { |
| 291 | r_io_u_d = rd->io_us_flight[i]->engine_data; |
| 292 | |
| 293 | if (wc.wr_id == r_io_u_d->rq_wr.wr_id) { |
| 294 | rd->io_us_flight[i]->resid = |
| 295 | rd->io_us_flight[i]->buflen |
| 296 | - wc.byte_len; |
| 297 | |
| 298 | rd->io_us_flight[i]->error = 0; |
| 299 | |
| 300 | rd->io_us_completed[rd-> |
| 301 | io_u_completed_nr] |
| 302 | = rd->io_us_flight[i]; |
| 303 | rd->io_u_completed_nr++; |
| 304 | break; |
| 305 | } |
| 306 | } |
| 307 | if (i == rd->io_u_flight_nr) |
| 308 | log_err("fio: recv wr %" PRId64 " not found\n", |
| 309 | wc.wr_id); |
| 310 | else { |
| 311 | /* put the last one into middle of the list */ |
| 312 | rd->io_us_flight[i] = |
| 313 | rd->io_us_flight[rd->io_u_flight_nr - 1]; |
| 314 | rd->io_u_flight_nr--; |
| 315 | } |
| 316 | |
| 317 | break; |
| 318 | |
| 319 | case IBV_WC_SEND: |
| 320 | case IBV_WC_RDMA_WRITE: |
| 321 | case IBV_WC_RDMA_READ: |
| 322 | if (wc.wr_id == FIO_RDMA_MAX_IO_DEPTH) |
| 323 | break; |
| 324 | |
| 325 | for (i = 0; i < rd->io_u_flight_nr; i++) { |
| 326 | r_io_u_d = rd->io_us_flight[i]->engine_data; |
| 327 | |
| 328 | if (wc.wr_id == r_io_u_d->sq_wr.wr_id) { |
| 329 | rd->io_us_completed[rd-> |
| 330 | io_u_completed_nr] |
| 331 | = rd->io_us_flight[i]; |
| 332 | rd->io_u_completed_nr++; |
| 333 | break; |
| 334 | } |
| 335 | } |
| 336 | if (i == rd->io_u_flight_nr) |
| 337 | log_err("fio: send wr %" PRId64 " not found\n", |
| 338 | wc.wr_id); |
| 339 | else { |
| 340 | /* put the last one into middle of the list */ |
| 341 | rd->io_us_flight[i] = |
| 342 | rd->io_us_flight[rd->io_u_flight_nr - 1]; |
| 343 | rd->io_u_flight_nr--; |
| 344 | } |
| 345 | |
| 346 | break; |
| 347 | |
| 348 | default: |
| 349 | log_info("fio: unknown completion event %d\n", |
| 350 | wc.opcode); |
| 351 | return -1; |
| 352 | } |
| 353 | rd->cq_event_num++; |
| 354 | } |
| 355 | |
| 356 | if (ret) { |
| 357 | log_err("fio: poll error %d\n", ret); |
| 358 | return 1; |
| 359 | } |
| 360 | |
| 361 | return compevnum; |
| 362 | } |
| 363 | |
| 364 | /* |
| 365 | * Return -1 for error and 'nr events' for a positive number |
| 366 | * of events |
| 367 | */ |
| 368 | static int rdma_poll_wait(struct thread_data *td, enum ibv_wc_opcode opcode) |
| 369 | { |
| 370 | struct rdmaio_data *rd = td->io_ops->data; |
| 371 | struct ibv_cq *ev_cq; |
| 372 | void *ev_ctx; |
| 373 | int ret; |
| 374 | |
| 375 | if (rd->cq_event_num > 0) { /* previous left */ |
| 376 | rd->cq_event_num--; |
| 377 | return 0; |
| 378 | } |
| 379 | |
| 380 | again: |
| 381 | if (ibv_get_cq_event(rd->channel, &ev_cq, &ev_ctx) != 0) { |
| 382 | log_err("fio: Failed to get cq event!\n"); |
| 383 | return -1; |
| 384 | } |
| 385 | if (ev_cq != rd->cq) { |
| 386 | log_err("fio: Unknown CQ!\n"); |
| 387 | return -1; |
| 388 | } |
| 389 | if (ibv_req_notify_cq(rd->cq, 0) != 0) { |
| 390 | log_err("fio: Failed to set notify!\n"); |
| 391 | return -1; |
| 392 | } |
| 393 | |
| 394 | ret = cq_event_handler(td, opcode); |
| 395 | if (ret == 0) |
| 396 | goto again; |
| 397 | |
| 398 | ibv_ack_cq_events(rd->cq, ret); |
| 399 | |
| 400 | rd->cq_event_num--; |
| 401 | |
| 402 | return ret; |
| 403 | } |
| 404 | |
| 405 | static int fio_rdmaio_setup_qp(struct thread_data *td) |
| 406 | { |
| 407 | struct rdmaio_data *rd = td->io_ops->data; |
| 408 | struct ibv_qp_init_attr init_attr; |
| 409 | int qp_depth = td->o.iodepth * 2; /* 2 times of io depth */ |
| 410 | |
| 411 | if (rd->is_client == 0) |
| 412 | rd->pd = ibv_alloc_pd(rd->child_cm_id->verbs); |
| 413 | else |
| 414 | rd->pd = ibv_alloc_pd(rd->cm_id->verbs); |
| 415 | |
| 416 | if (rd->pd == NULL) { |
| 417 | log_err("fio: ibv_alloc_pd fail\n"); |
| 418 | return 1; |
| 419 | } |
| 420 | |
| 421 | if (rd->is_client == 0) |
| 422 | rd->channel = ibv_create_comp_channel(rd->child_cm_id->verbs); |
| 423 | else |
| 424 | rd->channel = ibv_create_comp_channel(rd->cm_id->verbs); |
| 425 | if (rd->channel == NULL) { |
| 426 | log_err("fio: ibv_create_comp_channel fail\n"); |
| 427 | goto err1; |
| 428 | } |
| 429 | |
| 430 | if (qp_depth < 16) |
| 431 | qp_depth = 16; |
| 432 | |
| 433 | if (rd->is_client == 0) |
| 434 | rd->cq = ibv_create_cq(rd->child_cm_id->verbs, |
| 435 | qp_depth, rd, rd->channel, 0); |
| 436 | else |
| 437 | rd->cq = ibv_create_cq(rd->cm_id->verbs, |
| 438 | qp_depth, rd, rd->channel, 0); |
| 439 | if (rd->cq == NULL) { |
| 440 | log_err("fio: ibv_create_cq failed\n"); |
| 441 | goto err2; |
| 442 | } |
| 443 | |
| 444 | if (ibv_req_notify_cq(rd->cq, 0) != 0) { |
| 445 | log_err("fio: ibv_create_cq failed\n"); |
| 446 | goto err3; |
| 447 | } |
| 448 | |
| 449 | /* create queue pair */ |
| 450 | memset(&init_attr, 0, sizeof(init_attr)); |
| 451 | init_attr.cap.max_send_wr = qp_depth; |
| 452 | init_attr.cap.max_recv_wr = qp_depth; |
| 453 | init_attr.cap.max_recv_sge = 1; |
| 454 | init_attr.cap.max_send_sge = 1; |
| 455 | init_attr.qp_type = IBV_QPT_RC; |
| 456 | init_attr.send_cq = rd->cq; |
| 457 | init_attr.recv_cq = rd->cq; |
| 458 | |
| 459 | if (rd->is_client == 0) { |
| 460 | if (rdma_create_qp(rd->child_cm_id, rd->pd, &init_attr) != 0) { |
| 461 | log_err("fio: rdma_create_qp failed\n"); |
| 462 | goto err3; |
| 463 | } |
| 464 | rd->qp = rd->child_cm_id->qp; |
| 465 | } else { |
| 466 | if (rdma_create_qp(rd->cm_id, rd->pd, &init_attr) != 0) { |
| 467 | log_err("fio: rdma_create_qp failed\n"); |
| 468 | goto err3; |
| 469 | } |
| 470 | rd->qp = rd->cm_id->qp; |
| 471 | } |
| 472 | |
| 473 | return 0; |
| 474 | |
| 475 | err3: |
| 476 | ibv_destroy_cq(rd->cq); |
| 477 | err2: |
| 478 | ibv_destroy_comp_channel(rd->channel); |
| 479 | err1: |
| 480 | ibv_dealloc_pd(rd->pd); |
| 481 | |
| 482 | return 1; |
| 483 | } |
| 484 | |
| 485 | static int fio_rdmaio_setup_control_msg_buffers(struct thread_data *td) |
| 486 | { |
| 487 | struct rdmaio_data *rd = td->io_ops->data; |
| 488 | |
| 489 | rd->recv_mr = ibv_reg_mr(rd->pd, &rd->recv_buf, sizeof(rd->recv_buf), |
| 490 | IBV_ACCESS_LOCAL_WRITE); |
| 491 | if (rd->recv_mr == NULL) { |
| 492 | log_err("fio: recv_buf reg_mr failed\n"); |
| 493 | return 1; |
| 494 | } |
| 495 | |
| 496 | rd->send_mr = ibv_reg_mr(rd->pd, &rd->send_buf, sizeof(rd->send_buf), |
| 497 | 0); |
| 498 | if (rd->send_mr == NULL) { |
| 499 | log_err("fio: send_buf reg_mr failed\n"); |
| 500 | ibv_dereg_mr(rd->recv_mr); |
| 501 | return 1; |
| 502 | } |
| 503 | |
| 504 | /* setup work request */ |
| 505 | /* recv wq */ |
| 506 | rd->recv_sgl.addr = (uint64_t) (unsigned long)&rd->recv_buf; |
| 507 | rd->recv_sgl.length = sizeof(rd->recv_buf); |
| 508 | rd->recv_sgl.lkey = rd->recv_mr->lkey; |
| 509 | rd->rq_wr.sg_list = &rd->recv_sgl; |
| 510 | rd->rq_wr.num_sge = 1; |
| 511 | rd->rq_wr.wr_id = FIO_RDMA_MAX_IO_DEPTH; |
| 512 | |
| 513 | /* send wq */ |
| 514 | rd->send_sgl.addr = (uint64_t) (unsigned long)&rd->send_buf; |
| 515 | rd->send_sgl.length = sizeof(rd->send_buf); |
| 516 | rd->send_sgl.lkey = rd->send_mr->lkey; |
| 517 | |
| 518 | rd->sq_wr.opcode = IBV_WR_SEND; |
| 519 | rd->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 520 | rd->sq_wr.sg_list = &rd->send_sgl; |
| 521 | rd->sq_wr.num_sge = 1; |
| 522 | rd->sq_wr.wr_id = FIO_RDMA_MAX_IO_DEPTH; |
| 523 | |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | static int get_next_channel_event(struct thread_data *td, |
| 528 | struct rdma_event_channel *channel, |
| 529 | enum rdma_cm_event_type wait_event) |
| 530 | { |
| 531 | struct rdmaio_data *rd = td->io_ops->data; |
| 532 | struct rdma_cm_event *event; |
| 533 | int ret; |
| 534 | |
| 535 | ret = rdma_get_cm_event(channel, &event); |
| 536 | if (ret) { |
| 537 | log_err("fio: rdma_get_cm_event: %d\n", ret); |
| 538 | return 1; |
| 539 | } |
| 540 | |
| 541 | if (event->event != wait_event) { |
| 542 | log_err("fio: event is %s instead of %s\n", |
| 543 | rdma_event_str(event->event), |
| 544 | rdma_event_str(wait_event)); |
| 545 | return 1; |
| 546 | } |
| 547 | |
| 548 | switch (event->event) { |
| 549 | case RDMA_CM_EVENT_CONNECT_REQUEST: |
| 550 | rd->child_cm_id = event->id; |
| 551 | break; |
| 552 | default: |
| 553 | break; |
| 554 | } |
| 555 | |
| 556 | rdma_ack_cm_event(event); |
| 557 | |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | static int fio_rdmaio_prep(struct thread_data *td, struct io_u *io_u) |
| 562 | { |
| 563 | struct rdmaio_data *rd = td->io_ops->data; |
| 564 | struct rdma_io_u_data *r_io_u_d; |
| 565 | |
| 566 | r_io_u_d = io_u->engine_data; |
| 567 | |
| 568 | switch (rd->rdma_protocol) { |
| 569 | case FIO_RDMA_MEM_WRITE: |
| 570 | case FIO_RDMA_MEM_READ: |
| 571 | r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; |
| 572 | r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; |
| 573 | r_io_u_d->sq_wr.wr_id = r_io_u_d->wr_id; |
| 574 | r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 575 | r_io_u_d->sq_wr.sg_list = &r_io_u_d->rdma_sgl; |
| 576 | r_io_u_d->sq_wr.num_sge = 1; |
| 577 | break; |
| 578 | case FIO_RDMA_CHA_SEND: |
| 579 | r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; |
| 580 | r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; |
| 581 | r_io_u_d->rdma_sgl.length = io_u->buflen; |
| 582 | r_io_u_d->sq_wr.wr_id = r_io_u_d->wr_id; |
| 583 | r_io_u_d->sq_wr.opcode = IBV_WR_SEND; |
| 584 | r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 585 | r_io_u_d->sq_wr.sg_list = &r_io_u_d->rdma_sgl; |
| 586 | r_io_u_d->sq_wr.num_sge = 1; |
| 587 | break; |
| 588 | case FIO_RDMA_CHA_RECV: |
| 589 | r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; |
| 590 | r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; |
| 591 | r_io_u_d->rdma_sgl.length = io_u->buflen; |
| 592 | r_io_u_d->rq_wr.wr_id = r_io_u_d->wr_id; |
| 593 | r_io_u_d->rq_wr.sg_list = &r_io_u_d->rdma_sgl; |
| 594 | r_io_u_d->rq_wr.num_sge = 1; |
| 595 | break; |
| 596 | default: |
| 597 | log_err("fio: unknown rdma protocol - %d\n", rd->rdma_protocol); |
| 598 | break; |
| 599 | } |
| 600 | |
| 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | static struct io_u *fio_rdmaio_event(struct thread_data *td, int event) |
| 605 | { |
| 606 | struct rdmaio_data *rd = td->io_ops->data; |
| 607 | struct io_u *io_u; |
| 608 | int i; |
| 609 | |
| 610 | io_u = rd->io_us_completed[0]; |
| 611 | for (i = 0; i < rd->io_u_completed_nr - 1; i++) |
| 612 | rd->io_us_completed[i] = rd->io_us_completed[i + 1]; |
| 613 | |
| 614 | rd->io_u_completed_nr--; |
| 615 | |
| 616 | dprint_io_u(io_u, "fio_rdmaio_event"); |
| 617 | |
| 618 | return io_u; |
| 619 | } |
| 620 | |
| 621 | static int fio_rdmaio_getevents(struct thread_data *td, unsigned int min, |
| 622 | unsigned int max, const struct timespec *t) |
| 623 | { |
| 624 | struct rdmaio_data *rd = td->io_ops->data; |
| 625 | enum ibv_wc_opcode comp_opcode; |
| 626 | struct ibv_cq *ev_cq; |
| 627 | void *ev_ctx; |
| 628 | int ret, r = 0; |
| 629 | comp_opcode = IBV_WC_RDMA_WRITE; |
| 630 | |
| 631 | switch (rd->rdma_protocol) { |
| 632 | case FIO_RDMA_MEM_WRITE: |
| 633 | comp_opcode = IBV_WC_RDMA_WRITE; |
| 634 | break; |
| 635 | case FIO_RDMA_MEM_READ: |
| 636 | comp_opcode = IBV_WC_RDMA_READ; |
| 637 | break; |
| 638 | case FIO_RDMA_CHA_SEND: |
| 639 | comp_opcode = IBV_WC_SEND; |
| 640 | break; |
| 641 | case FIO_RDMA_CHA_RECV: |
| 642 | comp_opcode = IBV_WC_RECV; |
| 643 | break; |
| 644 | default: |
| 645 | log_err("fio: unknown rdma protocol - %d\n", rd->rdma_protocol); |
| 646 | break; |
| 647 | } |
| 648 | |
| 649 | if (rd->cq_event_num > 0) { /* previous left */ |
| 650 | rd->cq_event_num--; |
| 651 | return 0; |
| 652 | } |
| 653 | |
| 654 | again: |
| 655 | if (ibv_get_cq_event(rd->channel, &ev_cq, &ev_ctx) != 0) { |
| 656 | log_err("fio: Failed to get cq event!\n"); |
| 657 | return -1; |
| 658 | } |
| 659 | if (ev_cq != rd->cq) { |
| 660 | log_err("fio: Unknown CQ!\n"); |
| 661 | return -1; |
| 662 | } |
| 663 | if (ibv_req_notify_cq(rd->cq, 0) != 0) { |
| 664 | log_err("fio: Failed to set notify!\n"); |
| 665 | return -1; |
| 666 | } |
| 667 | |
| 668 | ret = cq_event_handler(td, comp_opcode); |
| 669 | if (ret < 1) |
| 670 | goto again; |
| 671 | |
| 672 | ibv_ack_cq_events(rd->cq, ret); |
| 673 | |
| 674 | r += ret; |
| 675 | if (r < min) |
| 676 | goto again; |
| 677 | |
| 678 | rd->cq_event_num -= r; |
| 679 | |
| 680 | return r; |
| 681 | } |
| 682 | |
| 683 | static int fio_rdmaio_send(struct thread_data *td, struct io_u **io_us, |
| 684 | unsigned int nr) |
| 685 | { |
| 686 | struct rdmaio_data *rd = td->io_ops->data; |
| 687 | struct ibv_send_wr *bad_wr; |
| 688 | #if 0 |
| 689 | enum ibv_wc_opcode comp_opcode; |
| 690 | comp_opcode = IBV_WC_RDMA_WRITE; |
| 691 | #endif |
| 692 | int i; |
| 693 | long index; |
| 694 | struct rdma_io_u_data *r_io_u_d; |
| 695 | |
| 696 | r_io_u_d = NULL; |
| 697 | |
| 698 | for (i = 0; i < nr; i++) { |
| 699 | /* RDMA_WRITE or RDMA_READ */ |
| 700 | switch (rd->rdma_protocol) { |
| 701 | case FIO_RDMA_MEM_WRITE: |
| 702 | /* compose work request */ |
| 703 | r_io_u_d = io_us[i]->engine_data; |
| 704 | index = __rand(&rd->rand_state) % rd->rmt_nr; |
| 705 | r_io_u_d->sq_wr.opcode = IBV_WR_RDMA_WRITE; |
| 706 | r_io_u_d->sq_wr.wr.rdma.rkey = rd->rmt_us[index].rkey; |
| 707 | r_io_u_d->sq_wr.wr.rdma.remote_addr = \ |
| 708 | rd->rmt_us[index].buf; |
| 709 | r_io_u_d->sq_wr.sg_list->length = io_us[i]->buflen; |
| 710 | break; |
| 711 | case FIO_RDMA_MEM_READ: |
| 712 | /* compose work request */ |
| 713 | r_io_u_d = io_us[i]->engine_data; |
| 714 | index = __rand(&rd->rand_state) % rd->rmt_nr; |
| 715 | r_io_u_d->sq_wr.opcode = IBV_WR_RDMA_READ; |
| 716 | r_io_u_d->sq_wr.wr.rdma.rkey = rd->rmt_us[index].rkey; |
| 717 | r_io_u_d->sq_wr.wr.rdma.remote_addr = \ |
| 718 | rd->rmt_us[index].buf; |
| 719 | r_io_u_d->sq_wr.sg_list->length = io_us[i]->buflen; |
| 720 | break; |
| 721 | case FIO_RDMA_CHA_SEND: |
| 722 | r_io_u_d = io_us[i]->engine_data; |
| 723 | r_io_u_d->sq_wr.opcode = IBV_WR_SEND; |
| 724 | r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 725 | break; |
| 726 | default: |
| 727 | log_err("fio: unknown rdma protocol - %d\n", |
| 728 | rd->rdma_protocol); |
| 729 | break; |
| 730 | } |
| 731 | |
| 732 | if (ibv_post_send(rd->qp, &r_io_u_d->sq_wr, &bad_wr) != 0) { |
| 733 | log_err("fio: ibv_post_send fail\n"); |
| 734 | return -1; |
| 735 | } |
| 736 | |
| 737 | dprint_io_u(io_us[i], "fio_rdmaio_send"); |
| 738 | } |
| 739 | |
| 740 | /* wait for completion |
| 741 | rdma_poll_wait(td, comp_opcode); */ |
| 742 | |
| 743 | return i; |
| 744 | } |
| 745 | |
| 746 | static int fio_rdmaio_recv(struct thread_data *td, struct io_u **io_us, |
| 747 | unsigned int nr) |
| 748 | { |
| 749 | struct rdmaio_data *rd = td->io_ops->data; |
| 750 | struct ibv_recv_wr *bad_wr; |
| 751 | struct rdma_io_u_data *r_io_u_d; |
| 752 | int i; |
| 753 | |
| 754 | i = 0; |
| 755 | if (rd->rdma_protocol == FIO_RDMA_CHA_RECV) { |
| 756 | /* post io_u into recv queue */ |
| 757 | for (i = 0; i < nr; i++) { |
| 758 | r_io_u_d = io_us[i]->engine_data; |
| 759 | if (ibv_post_recv(rd->qp, &r_io_u_d->rq_wr, &bad_wr) != |
| 760 | 0) { |
| 761 | log_err("fio: ibv_post_recv fail\n"); |
| 762 | return 1; |
| 763 | } |
| 764 | } |
| 765 | } else if ((rd->rdma_protocol == FIO_RDMA_MEM_READ) |
| 766 | || (rd->rdma_protocol == FIO_RDMA_MEM_WRITE)) { |
| 767 | /* re-post the rq_wr */ |
| 768 | if (ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr) != 0) { |
| 769 | log_err("fio: ibv_post_recv fail\n"); |
| 770 | return 1; |
| 771 | } |
| 772 | |
| 773 | rdma_poll_wait(td, IBV_WC_RECV); |
| 774 | |
| 775 | dprint(FD_IO, "fio: recv FINISH message\n"); |
| 776 | td->done = 1; |
| 777 | return 0; |
| 778 | } |
| 779 | |
| 780 | return i; |
| 781 | } |
| 782 | |
| 783 | static int fio_rdmaio_queue(struct thread_data *td, struct io_u *io_u) |
| 784 | { |
| 785 | struct rdmaio_data *rd = td->io_ops->data; |
| 786 | |
| 787 | fio_ro_check(td, io_u); |
| 788 | |
| 789 | if (rd->io_u_queued_nr == (int)td->o.iodepth) |
| 790 | return FIO_Q_BUSY; |
| 791 | |
| 792 | rd->io_us_queued[rd->io_u_queued_nr] = io_u; |
| 793 | rd->io_u_queued_nr++; |
| 794 | |
| 795 | dprint_io_u(io_u, "fio_rdmaio_queue"); |
| 796 | |
| 797 | return FIO_Q_QUEUED; |
| 798 | } |
| 799 | |
| 800 | static void fio_rdmaio_queued(struct thread_data *td, struct io_u **io_us, |
| 801 | unsigned int nr) |
| 802 | { |
| 803 | struct rdmaio_data *rd = td->io_ops->data; |
| 804 | struct timeval now; |
| 805 | unsigned int i; |
| 806 | |
| 807 | if (!fio_fill_issue_time(td)) |
| 808 | return; |
| 809 | |
| 810 | fio_gettime(&now, NULL); |
| 811 | |
| 812 | for (i = 0; i < nr; i++) { |
| 813 | struct io_u *io_u = io_us[i]; |
| 814 | |
| 815 | /* queued -> flight */ |
| 816 | rd->io_us_flight[rd->io_u_flight_nr] = io_u; |
| 817 | rd->io_u_flight_nr++; |
| 818 | |
| 819 | memcpy(&io_u->issue_time, &now, sizeof(now)); |
| 820 | io_u_queued(td, io_u); |
| 821 | } |
| 822 | } |
| 823 | |
| 824 | static int fio_rdmaio_commit(struct thread_data *td) |
| 825 | { |
| 826 | struct rdmaio_data *rd = td->io_ops->data; |
| 827 | struct io_u **io_us; |
| 828 | int ret; |
| 829 | |
| 830 | if (!rd->io_us_queued) |
| 831 | return 0; |
| 832 | |
| 833 | io_us = rd->io_us_queued; |
| 834 | do { |
| 835 | /* RDMA_WRITE or RDMA_READ */ |
| 836 | if (rd->is_client) |
| 837 | ret = fio_rdmaio_send(td, io_us, rd->io_u_queued_nr); |
| 838 | else if (!rd->is_client) |
| 839 | ret = fio_rdmaio_recv(td, io_us, rd->io_u_queued_nr); |
| 840 | else |
| 841 | ret = 0; /* must be a SYNC */ |
| 842 | |
| 843 | if (ret > 0) { |
| 844 | fio_rdmaio_queued(td, io_us, ret); |
| 845 | io_u_mark_submit(td, ret); |
| 846 | rd->io_u_queued_nr -= ret; |
| 847 | io_us += ret; |
| 848 | ret = 0; |
| 849 | } else |
| 850 | break; |
| 851 | } while (rd->io_u_queued_nr); |
| 852 | |
| 853 | return ret; |
| 854 | } |
| 855 | |
| 856 | static int fio_rdmaio_connect(struct thread_data *td, struct fio_file *f) |
| 857 | { |
| 858 | struct rdmaio_data *rd = td->io_ops->data; |
| 859 | struct rdma_conn_param conn_param; |
| 860 | struct ibv_send_wr *bad_wr; |
| 861 | |
| 862 | memset(&conn_param, 0, sizeof(conn_param)); |
| 863 | conn_param.responder_resources = 1; |
| 864 | conn_param.initiator_depth = 1; |
| 865 | conn_param.retry_count = 10; |
| 866 | |
| 867 | if (rdma_connect(rd->cm_id, &conn_param) != 0) { |
| 868 | log_err("fio: rdma_connect fail\n"); |
| 869 | return 1; |
| 870 | } |
| 871 | |
| 872 | if (get_next_channel_event |
| 873 | (td, rd->cm_channel, RDMA_CM_EVENT_ESTABLISHED) != 0) { |
| 874 | log_err("fio: wait for RDMA_CM_EVENT_ESTABLISHED\n"); |
| 875 | return 1; |
| 876 | } |
| 877 | |
| 878 | /* send task request */ |
| 879 | rd->send_buf.mode = htonl(rd->rdma_protocol); |
| 880 | rd->send_buf.nr = htonl(td->o.iodepth); |
| 881 | |
| 882 | if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { |
| 883 | log_err("fio: ibv_post_send fail"); |
| 884 | return 1; |
| 885 | } |
| 886 | |
| 887 | if (rdma_poll_wait(td, IBV_WC_SEND) < 0) |
| 888 | return 1; |
| 889 | |
| 890 | /* wait for remote MR info from server side */ |
| 891 | if (rdma_poll_wait(td, IBV_WC_RECV) < 0) |
| 892 | return 1; |
| 893 | |
| 894 | /* In SEND/RECV test, it's a good practice to setup the iodepth of |
| 895 | * of the RECV side deeper than that of the SEND side to |
| 896 | * avoid RNR (receiver not ready) error. The |
| 897 | * SEND side may send so many unsolicited message before |
| 898 | * RECV side commits sufficient recv buffers into recv queue. |
| 899 | * This may lead to RNR error. Here, SEND side pauses for a while |
| 900 | * during which RECV side commits sufficient recv buffers. |
| 901 | */ |
| 902 | usleep(500000); |
| 903 | |
| 904 | return 0; |
| 905 | } |
| 906 | |
| 907 | static int fio_rdmaio_accept(struct thread_data *td, struct fio_file *f) |
| 908 | { |
| 909 | struct rdmaio_data *rd = td->io_ops->data; |
| 910 | struct rdma_conn_param conn_param; |
| 911 | struct ibv_send_wr *bad_wr; |
| 912 | int ret = 0; |
| 913 | |
| 914 | /* rdma_accept() - then wait for accept success */ |
| 915 | memset(&conn_param, 0, sizeof(conn_param)); |
| 916 | conn_param.responder_resources = 1; |
| 917 | conn_param.initiator_depth = 1; |
| 918 | |
| 919 | if (rdma_accept(rd->child_cm_id, &conn_param) != 0) { |
| 920 | log_err("fio: rdma_accept\n"); |
| 921 | return 1; |
| 922 | } |
| 923 | |
| 924 | if (get_next_channel_event |
| 925 | (td, rd->cm_channel, RDMA_CM_EVENT_ESTABLISHED) != 0) { |
| 926 | log_err("fio: wait for RDMA_CM_EVENT_ESTABLISHED\n"); |
| 927 | return 1; |
| 928 | } |
| 929 | |
| 930 | /* wait for request */ |
| 931 | ret = rdma_poll_wait(td, IBV_WC_RECV) < 0; |
| 932 | |
| 933 | if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { |
| 934 | log_err("fio: ibv_post_send fail"); |
| 935 | return 1; |
| 936 | } |
| 937 | |
| 938 | if (rdma_poll_wait(td, IBV_WC_SEND) < 0) |
| 939 | return 1; |
| 940 | |
| 941 | return ret; |
| 942 | } |
| 943 | |
| 944 | static int fio_rdmaio_open_file(struct thread_data *td, struct fio_file *f) |
| 945 | { |
| 946 | if (td_read(td)) |
| 947 | return fio_rdmaio_accept(td, f); |
| 948 | else |
| 949 | return fio_rdmaio_connect(td, f); |
| 950 | } |
| 951 | |
| 952 | static int fio_rdmaio_close_file(struct thread_data *td, struct fio_file *f) |
| 953 | { |
| 954 | struct rdmaio_data *rd = td->io_ops->data; |
| 955 | struct ibv_send_wr *bad_wr; |
| 956 | |
| 957 | /* unregister rdma buffer */ |
| 958 | |
| 959 | /* |
| 960 | * Client sends notification to the server side |
| 961 | */ |
| 962 | /* refer to: http://linux.die.net/man/7/rdma_cm */ |
| 963 | if ((rd->is_client == 1) && ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) |
| 964 | || (rd->rdma_protocol == |
| 965 | FIO_RDMA_MEM_READ))) { |
| 966 | if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { |
| 967 | log_err("fio: ibv_post_send fail"); |
| 968 | return 1; |
| 969 | } |
| 970 | |
| 971 | dprint(FD_IO, "fio: close information sent success\n"); |
| 972 | rdma_poll_wait(td, IBV_WC_SEND); |
| 973 | } |
| 974 | |
| 975 | if (rd->is_client == 1) |
| 976 | rdma_disconnect(rd->cm_id); |
| 977 | else { |
| 978 | rdma_disconnect(rd->child_cm_id); |
| 979 | #if 0 |
| 980 | rdma_disconnect(rd->cm_id); |
| 981 | #endif |
| 982 | } |
| 983 | |
| 984 | #if 0 |
| 985 | if (get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_DISCONNECTED) != 0) { |
| 986 | log_err("fio: wait for RDMA_CM_EVENT_DISCONNECTED\n"); |
| 987 | return 1; |
| 988 | } |
| 989 | #endif |
| 990 | |
| 991 | ibv_destroy_cq(rd->cq); |
| 992 | ibv_destroy_qp(rd->qp); |
| 993 | |
| 994 | if (rd->is_client == 1) |
| 995 | rdma_destroy_id(rd->cm_id); |
| 996 | else { |
| 997 | rdma_destroy_id(rd->child_cm_id); |
| 998 | rdma_destroy_id(rd->cm_id); |
| 999 | } |
| 1000 | |
| 1001 | ibv_destroy_comp_channel(rd->channel); |
| 1002 | ibv_dealloc_pd(rd->pd); |
| 1003 | |
| 1004 | return 0; |
| 1005 | } |
| 1006 | |
| 1007 | static int fio_rdmaio_setup_connect(struct thread_data *td, const char *host, |
| 1008 | unsigned short port) |
| 1009 | { |
| 1010 | struct rdmaio_data *rd = td->io_ops->data; |
| 1011 | struct ibv_recv_wr *bad_wr; |
| 1012 | int err; |
| 1013 | |
| 1014 | rd->addr.sin_family = AF_INET; |
| 1015 | rd->addr.sin_port = htons(port); |
| 1016 | |
| 1017 | if (inet_aton(host, &rd->addr.sin_addr) != 1) { |
| 1018 | struct hostent *hent; |
| 1019 | |
| 1020 | hent = gethostbyname(host); |
| 1021 | if (!hent) { |
| 1022 | td_verror(td, errno, "gethostbyname"); |
| 1023 | return 1; |
| 1024 | } |
| 1025 | |
| 1026 | memcpy(&rd->addr.sin_addr, hent->h_addr, 4); |
| 1027 | } |
| 1028 | |
| 1029 | /* resolve route */ |
| 1030 | err = rdma_resolve_addr(rd->cm_id, NULL, (struct sockaddr *)&rd->addr, 2000); |
| 1031 | if (err != 0) { |
| 1032 | log_err("fio: rdma_resolve_addr: %d\n", err); |
| 1033 | return 1; |
| 1034 | } |
| 1035 | |
| 1036 | err = get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_ADDR_RESOLVED); |
| 1037 | if (err != 0) { |
| 1038 | log_err("fio: get_next_channel_event: %d\n", err); |
| 1039 | return 1; |
| 1040 | } |
| 1041 | |
| 1042 | /* resolve route */ |
| 1043 | err = rdma_resolve_route(rd->cm_id, 2000); |
| 1044 | if (err != 0) { |
| 1045 | log_err("fio: rdma_resolve_route: %d\n", err); |
| 1046 | return 1; |
| 1047 | } |
| 1048 | |
| 1049 | err = get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_ROUTE_RESOLVED); |
| 1050 | if (err != 0) { |
| 1051 | log_err("fio: get_next_channel_event: %d\n", err); |
| 1052 | return 1; |
| 1053 | } |
| 1054 | |
| 1055 | /* create qp and buffer */ |
| 1056 | if (fio_rdmaio_setup_qp(td) != 0) |
| 1057 | return 1; |
| 1058 | |
| 1059 | if (fio_rdmaio_setup_control_msg_buffers(td) != 0) |
| 1060 | return 1; |
| 1061 | |
| 1062 | /* post recv buf */ |
| 1063 | err = ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr); |
| 1064 | if (err != 0) { |
| 1065 | log_err("fio: ibv_post_recv fail: %d\n", err); |
| 1066 | return 1; |
| 1067 | } |
| 1068 | |
| 1069 | return 0; |
| 1070 | } |
| 1071 | |
| 1072 | static int fio_rdmaio_setup_listen(struct thread_data *td, short port) |
| 1073 | { |
| 1074 | struct rdmaio_data *rd = td->io_ops->data; |
| 1075 | struct ibv_recv_wr *bad_wr; |
| 1076 | int state = td->runstate; |
| 1077 | |
| 1078 | td_set_runstate(td, TD_SETTING_UP); |
| 1079 | |
| 1080 | rd->addr.sin_family = AF_INET; |
| 1081 | rd->addr.sin_addr.s_addr = htonl(INADDR_ANY); |
| 1082 | rd->addr.sin_port = htons(port); |
| 1083 | |
| 1084 | /* rdma_listen */ |
| 1085 | if (rdma_bind_addr(rd->cm_id, (struct sockaddr *)&rd->addr) != 0) { |
| 1086 | log_err("fio: rdma_bind_addr fail\n"); |
| 1087 | return 1; |
| 1088 | } |
| 1089 | |
| 1090 | if (rdma_listen(rd->cm_id, 3) != 0) { |
| 1091 | log_err("fio: rdma_listen fail\n"); |
| 1092 | return 1; |
| 1093 | } |
| 1094 | |
| 1095 | log_info("fio: waiting for connection\n"); |
| 1096 | |
| 1097 | /* wait for CONNECT_REQUEST */ |
| 1098 | if (get_next_channel_event |
| 1099 | (td, rd->cm_channel, RDMA_CM_EVENT_CONNECT_REQUEST) != 0) { |
| 1100 | log_err("fio: wait for RDMA_CM_EVENT_CONNECT_REQUEST\n"); |
| 1101 | return 1; |
| 1102 | } |
| 1103 | |
| 1104 | if (fio_rdmaio_setup_qp(td) != 0) |
| 1105 | return 1; |
| 1106 | |
| 1107 | if (fio_rdmaio_setup_control_msg_buffers(td) != 0) |
| 1108 | return 1; |
| 1109 | |
| 1110 | /* post recv buf */ |
| 1111 | if (ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr) != 0) { |
| 1112 | log_err("fio: ibv_post_recv fail\n"); |
| 1113 | return 1; |
| 1114 | } |
| 1115 | |
| 1116 | td_set_runstate(td, state); |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | static int check_set_rlimits(struct thread_data *td) |
| 1121 | { |
| 1122 | #ifdef CONFIG_RLIMIT_MEMLOCK |
| 1123 | struct rlimit rl; |
| 1124 | |
| 1125 | /* check RLIMIT_MEMLOCK */ |
| 1126 | if (getrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| 1127 | log_err("fio: getrlimit fail: %d(%s)\n", |
| 1128 | errno, strerror(errno)); |
| 1129 | return 1; |
| 1130 | } |
| 1131 | |
| 1132 | /* soft limit */ |
| 1133 | if ((rl.rlim_cur != RLIM_INFINITY) |
| 1134 | && (rl.rlim_cur < td->orig_buffer_size)) { |
| 1135 | log_err("fio: soft RLIMIT_MEMLOCK is: %" PRId64 "\n", |
| 1136 | rl.rlim_cur); |
| 1137 | log_err("fio: total block size is: %zd\n", |
| 1138 | td->orig_buffer_size); |
| 1139 | /* try to set larger RLIMIT_MEMLOCK */ |
| 1140 | rl.rlim_cur = rl.rlim_max; |
| 1141 | if (setrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| 1142 | log_err("fio: setrlimit fail: %d(%s)\n", |
| 1143 | errno, strerror(errno)); |
| 1144 | log_err("fio: you may try enlarge MEMLOCK by root\n"); |
| 1145 | log_err("# ulimit -l unlimited\n"); |
| 1146 | return 1; |
| 1147 | } |
| 1148 | } |
| 1149 | #endif |
| 1150 | |
| 1151 | return 0; |
| 1152 | } |
| 1153 | |
| 1154 | static int compat_options(struct thread_data *td) |
| 1155 | { |
| 1156 | // The original RDMA engine had an ugly / seperator |
| 1157 | // on the filename for it's options. This function |
| 1158 | // retains backwards compatibility with it.100 |
| 1159 | |
| 1160 | struct rdmaio_options *o = td->eo; |
| 1161 | char *modep, *portp; |
| 1162 | char *filename = td->o.filename; |
| 1163 | |
| 1164 | if (!filename) |
| 1165 | return 0; |
| 1166 | |
| 1167 | portp = strchr(filename, '/'); |
| 1168 | if (portp == NULL) |
| 1169 | return 0; |
| 1170 | |
| 1171 | *portp = '\0'; |
| 1172 | portp++; |
| 1173 | |
| 1174 | o->port = strtol(portp, NULL, 10); |
| 1175 | if (!o->port || o->port > 65535) |
| 1176 | goto bad_host; |
| 1177 | |
| 1178 | modep = strchr(portp, '/'); |
| 1179 | if (modep != NULL) { |
| 1180 | *modep = '\0'; |
| 1181 | modep++; |
| 1182 | } |
| 1183 | |
| 1184 | if (modep) { |
| 1185 | if (!strncmp("rdma_write", modep, strlen(modep)) || |
| 1186 | !strncmp("RDMA_WRITE", modep, strlen(modep))) |
| 1187 | o->verb = FIO_RDMA_MEM_WRITE; |
| 1188 | else if (!strncmp("rdma_read", modep, strlen(modep)) || |
| 1189 | !strncmp("RDMA_READ", modep, strlen(modep))) |
| 1190 | o->verb = FIO_RDMA_MEM_READ; |
| 1191 | else if (!strncmp("send", modep, strlen(modep)) || |
| 1192 | !strncmp("SEND", modep, strlen(modep))) |
| 1193 | o->verb = FIO_RDMA_CHA_SEND; |
| 1194 | else |
| 1195 | goto bad_host; |
| 1196 | } else |
| 1197 | o->verb = FIO_RDMA_MEM_WRITE; |
| 1198 | |
| 1199 | |
| 1200 | return 0; |
| 1201 | |
| 1202 | bad_host: |
| 1203 | log_err("fio: bad rdma host/port/protocol: %s\n", td->o.filename); |
| 1204 | return 1; |
| 1205 | } |
| 1206 | |
| 1207 | static int fio_rdmaio_init(struct thread_data *td) |
| 1208 | { |
| 1209 | struct rdmaio_data *rd = td->io_ops->data; |
| 1210 | struct rdmaio_options *o = td->eo; |
| 1211 | unsigned int max_bs; |
| 1212 | int ret, i; |
| 1213 | |
| 1214 | if (td_rw(td)) { |
| 1215 | log_err("fio: rdma connections must be read OR write\n"); |
| 1216 | return 1; |
| 1217 | } |
| 1218 | if (td_random(td)) { |
| 1219 | log_err("fio: RDMA network IO can't be random\n"); |
| 1220 | return 1; |
| 1221 | } |
| 1222 | |
| 1223 | if (compat_options(td)) |
| 1224 | return 1; |
| 1225 | |
| 1226 | if (!o->port) { |
| 1227 | log_err("fio: no port has been specified which is required " |
| 1228 | "for the rdma engine\n"); |
| 1229 | return 1; |
| 1230 | } |
| 1231 | |
| 1232 | if (check_set_rlimits(td)) |
| 1233 | return 1; |
| 1234 | |
| 1235 | rd->rdma_protocol = o->verb; |
| 1236 | rd->cq_event_num = 0; |
| 1237 | |
| 1238 | rd->cm_channel = rdma_create_event_channel(); |
| 1239 | if (!rd->cm_channel) { |
| 1240 | log_err("fio: rdma_create_event_channel fail\n"); |
| 1241 | return 1; |
| 1242 | } |
| 1243 | |
| 1244 | ret = rdma_create_id(rd->cm_channel, &rd->cm_id, rd, RDMA_PS_TCP); |
| 1245 | if (ret) { |
| 1246 | log_err("fio: rdma_create_id fail\n"); |
| 1247 | return 1; |
| 1248 | } |
| 1249 | |
| 1250 | if ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) || |
| 1251 | (rd->rdma_protocol == FIO_RDMA_MEM_READ)) { |
| 1252 | rd->rmt_us = |
| 1253 | malloc(FIO_RDMA_MAX_IO_DEPTH * sizeof(struct remote_u)); |
| 1254 | memset(rd->rmt_us, 0, |
| 1255 | FIO_RDMA_MAX_IO_DEPTH * sizeof(struct remote_u)); |
| 1256 | rd->rmt_nr = 0; |
| 1257 | } |
| 1258 | |
| 1259 | rd->io_us_queued = malloc(td->o.iodepth * sizeof(struct io_u *)); |
| 1260 | memset(rd->io_us_queued, 0, td->o.iodepth * sizeof(struct io_u *)); |
| 1261 | rd->io_u_queued_nr = 0; |
| 1262 | |
| 1263 | rd->io_us_flight = malloc(td->o.iodepth * sizeof(struct io_u *)); |
| 1264 | memset(rd->io_us_flight, 0, td->o.iodepth * sizeof(struct io_u *)); |
| 1265 | rd->io_u_flight_nr = 0; |
| 1266 | |
| 1267 | rd->io_us_completed = malloc(td->o.iodepth * sizeof(struct io_u *)); |
| 1268 | memset(rd->io_us_completed, 0, td->o.iodepth * sizeof(struct io_u *)); |
| 1269 | rd->io_u_completed_nr = 0; |
| 1270 | |
| 1271 | if (td_read(td)) { /* READ as the server */ |
| 1272 | rd->is_client = 0; |
| 1273 | td->flags |= TD_F_NO_PROGRESS; |
| 1274 | /* server rd->rdma_buf_len will be setup after got request */ |
| 1275 | ret = fio_rdmaio_setup_listen(td, o->port); |
| 1276 | } else { /* WRITE as the client */ |
| 1277 | rd->is_client = 1; |
| 1278 | ret = fio_rdmaio_setup_connect(td, td->o.filename, o->port); |
| 1279 | } |
| 1280 | |
| 1281 | max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); |
| 1282 | rd->send_buf.max_bs = htonl(max_bs); |
| 1283 | |
| 1284 | /* register each io_u in the free list */ |
| 1285 | for (i = 0; i < td->io_u_freelist.nr; i++) { |
| 1286 | struct io_u *io_u = td->io_u_freelist.io_us[i]; |
| 1287 | |
| 1288 | io_u->engine_data = malloc(sizeof(struct rdma_io_u_data)); |
| 1289 | memset(io_u->engine_data, 0, sizeof(struct rdma_io_u_data)); |
| 1290 | ((struct rdma_io_u_data *)io_u->engine_data)->wr_id = i; |
| 1291 | |
| 1292 | io_u->mr = ibv_reg_mr(rd->pd, io_u->buf, max_bs, |
| 1293 | IBV_ACCESS_LOCAL_WRITE | |
| 1294 | IBV_ACCESS_REMOTE_READ | |
| 1295 | IBV_ACCESS_REMOTE_WRITE); |
| 1296 | if (io_u->mr == NULL) { |
| 1297 | log_err("fio: ibv_reg_mr io_u failed\n"); |
| 1298 | return 1; |
| 1299 | } |
| 1300 | |
| 1301 | rd->send_buf.rmt_us[i].buf = |
| 1302 | htonll((uint64_t) (unsigned long)io_u->buf); |
| 1303 | rd->send_buf.rmt_us[i].rkey = htonl(io_u->mr->rkey); |
| 1304 | rd->send_buf.rmt_us[i].size = htonl(max_bs); |
| 1305 | |
| 1306 | #if 0 |
| 1307 | log_info("fio: Send rkey %x addr %" PRIx64 " len %d to client\n", io_u->mr->rkey, io_u->buf, max_bs); */ |
| 1308 | #endif |
| 1309 | } |
| 1310 | |
| 1311 | rd->send_buf.nr = htonl(i); |
| 1312 | |
| 1313 | return ret; |
| 1314 | } |
| 1315 | |
| 1316 | static void fio_rdmaio_cleanup(struct thread_data *td) |
| 1317 | { |
| 1318 | struct rdmaio_data *rd = td->io_ops->data; |
| 1319 | |
| 1320 | if (rd) |
| 1321 | free(rd); |
| 1322 | } |
| 1323 | |
| 1324 | static int fio_rdmaio_setup(struct thread_data *td) |
| 1325 | { |
| 1326 | struct rdmaio_data *rd; |
| 1327 | |
| 1328 | if (!td->files_index) { |
| 1329 | add_file(td, td->o.filename ?: "rdma", 0, 0); |
| 1330 | td->o.nr_files = td->o.nr_files ?: 1; |
| 1331 | td->o.open_files++; |
| 1332 | } |
| 1333 | |
| 1334 | if (!td->io_ops->data) { |
| 1335 | rd = malloc(sizeof(*rd)); |
| 1336 | |
| 1337 | memset(rd, 0, sizeof(*rd)); |
| 1338 | init_rand_seed(&rd->rand_state, (unsigned int) GOLDEN_RATIO_PRIME, 0); |
| 1339 | td->io_ops->data = rd; |
| 1340 | } |
| 1341 | |
| 1342 | return 0; |
| 1343 | } |
| 1344 | |
| 1345 | static struct ioengine_ops ioengine_rw = { |
| 1346 | .name = "rdma", |
| 1347 | .version = FIO_IOOPS_VERSION, |
| 1348 | .setup = fio_rdmaio_setup, |
| 1349 | .init = fio_rdmaio_init, |
| 1350 | .prep = fio_rdmaio_prep, |
| 1351 | .queue = fio_rdmaio_queue, |
| 1352 | .commit = fio_rdmaio_commit, |
| 1353 | .getevents = fio_rdmaio_getevents, |
| 1354 | .event = fio_rdmaio_event, |
| 1355 | .cleanup = fio_rdmaio_cleanup, |
| 1356 | .open_file = fio_rdmaio_open_file, |
| 1357 | .close_file = fio_rdmaio_close_file, |
| 1358 | .flags = FIO_DISKLESSIO | FIO_UNIDIR | FIO_PIPEIO, |
| 1359 | .options = options, |
| 1360 | .option_struct_size = sizeof(struct rdmaio_options), |
| 1361 | }; |
| 1362 | |
| 1363 | static void fio_init fio_rdmaio_register(void) |
| 1364 | { |
| 1365 | register_ioengine(&ioengine_rw); |
| 1366 | } |
| 1367 | |
| 1368 | static void fio_exit fio_rdmaio_unregister(void) |
| 1369 | { |
| 1370 | unregister_ioengine(&ioengine_rw); |
| 1371 | } |