ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1 | /* |
Bart Van Assche | 85286c5 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 2 | * RDMA I/O engine |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 3 | * |
Bart Van Assche | 85286c5 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 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. |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 7 | * |
Jens Axboe | 0ac5d39 | 2013-01-24 15:38:37 -0700 | [diff] [blame^] | 8 | * You will need the Linux RDMA software installed, either |
Bart Van Assche | 85286c5 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 9 | * from your Linux distributor or directly from openfabrics.org: |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 10 | * |
| 11 | * http://www.openfabrics.org/downloads/OFED/ |
| 12 | * |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 13 | * Exchanging steps of RDMA ioengine control messages: |
| 14 | * 1. client side sends test mode (RDMA_WRITE/RDMA_READ/SEND) |
| 15 | * to server side. |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 16 | * 2. server side parses test mode, and sends back confirmation |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 17 | * to client side. In RDMA WRITE/READ test, this confirmation |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 18 | * includes memory information, such as rkey, address. |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 19 | * 3. client side initiates test loop. |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 20 | * 4. In RDMA WRITE/READ test, client side sends a completion |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 21 | * notification to server side. Server side updates its |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 22 | * td->done as true. |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 23 | * |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 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 <byteswap.h> |
| 40 | #include <pthread.h> |
| 41 | #include <inttypes.h> |
| 42 | |
| 43 | #include "../fio.h" |
Jens Axboe | ee88d05 | 2012-10-24 14:06:35 +0200 | [diff] [blame] | 44 | #include "../hash.h" |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 45 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 46 | #include <rdma/rdma_cma.h> |
| 47 | #include <infiniband/arch.h> |
| 48 | |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 49 | #define FIO_RDMA_MAX_IO_DEPTH 512 |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 50 | |
| 51 | enum rdma_io_mode { |
| 52 | FIO_RDMA_UNKNOWN = 0, |
| 53 | FIO_RDMA_MEM_WRITE, |
| 54 | FIO_RDMA_MEM_READ, |
| 55 | FIO_RDMA_CHA_SEND, |
| 56 | FIO_RDMA_CHA_RECV |
| 57 | }; |
| 58 | |
| 59 | struct remote_u { |
| 60 | uint64_t buf; |
| 61 | uint32_t rkey; |
| 62 | uint32_t size; |
| 63 | }; |
| 64 | |
| 65 | struct rdma_info_blk { |
| 66 | uint32_t mode; /* channel semantic or memory semantic */ |
| 67 | uint32_t nr; /* client: io depth |
| 68 | server: number of records for memory semantic |
| 69 | */ |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 70 | struct remote_u rmt_us[FIO_RDMA_MAX_IO_DEPTH]; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 71 | }; |
| 72 | |
| 73 | struct rdma_io_u_data { |
| 74 | uint64_t wr_id; |
| 75 | struct ibv_send_wr sq_wr; |
| 76 | struct ibv_recv_wr rq_wr; |
| 77 | struct ibv_sge rdma_sgl; |
| 78 | }; |
| 79 | |
| 80 | struct rdmaio_data { |
| 81 | int is_client; |
| 82 | enum rdma_io_mode rdma_protocol; |
| 83 | char host[64]; |
| 84 | struct sockaddr_in addr; |
| 85 | |
| 86 | struct ibv_recv_wr rq_wr; |
| 87 | struct ibv_sge recv_sgl; |
| 88 | struct rdma_info_blk recv_buf; |
| 89 | struct ibv_mr *recv_mr; |
| 90 | |
| 91 | struct ibv_send_wr sq_wr; |
| 92 | struct ibv_sge send_sgl; |
| 93 | struct rdma_info_blk send_buf; |
| 94 | struct ibv_mr *send_mr; |
| 95 | |
| 96 | struct ibv_comp_channel *channel; |
| 97 | struct ibv_cq *cq; |
| 98 | struct ibv_pd *pd; |
| 99 | struct ibv_qp *qp; |
| 100 | |
| 101 | pthread_t cmthread; |
| 102 | struct rdma_event_channel *cm_channel; |
| 103 | struct rdma_cm_id *cm_id; |
| 104 | struct rdma_cm_id *child_cm_id; |
| 105 | |
| 106 | int cq_event_num; |
| 107 | |
| 108 | struct remote_u *rmt_us; |
| 109 | int rmt_nr; |
| 110 | struct io_u **io_us_queued; |
| 111 | int io_u_queued_nr; |
| 112 | struct io_u **io_us_flight; |
| 113 | int io_u_flight_nr; |
| 114 | struct io_u **io_us_completed; |
| 115 | int io_u_completed_nr; |
Jens Axboe | ea6209a | 2012-10-24 09:14:24 +0200 | [diff] [blame] | 116 | |
| 117 | struct frand_state rand_state; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 118 | }; |
| 119 | |
| 120 | static int client_recv(struct thread_data *td, struct ibv_wc *wc) |
| 121 | { |
| 122 | struct rdmaio_data *rd = td->io_ops->data; |
| 123 | |
| 124 | if (wc->byte_len != sizeof(rd->recv_buf)) { |
Yufei Ren | b6cf38f | 2011-08-02 12:15:30 +0200 | [diff] [blame] | 125 | log_err("Received bogus data, size %d\n", wc->byte_len); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 126 | return 1; |
| 127 | } |
| 128 | |
| 129 | /* store mr info for MEMORY semantic */ |
| 130 | if ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) || |
| 131 | (rd->rdma_protocol == FIO_RDMA_MEM_READ)) { |
| 132 | /* struct flist_head *entry; */ |
| 133 | int i = 0; |
| 134 | |
| 135 | rd->rmt_nr = ntohl(rd->recv_buf.nr); |
| 136 | |
| 137 | for (i = 0; i < rd->rmt_nr; i++) { |
| 138 | rd->rmt_us[i].buf = ntohll(rd->recv_buf.rmt_us[i].buf); |
| 139 | rd->rmt_us[i].rkey = ntohl(rd->recv_buf.rmt_us[i].rkey); |
| 140 | rd->rmt_us[i].size = ntohl(rd->recv_buf.rmt_us[i].size); |
| 141 | |
| 142 | dprint(FD_IO, |
| 143 | "fio: Received rkey %x addr %" PRIx64 |
| 144 | " len %d from peer\n", rd->rmt_us[i].rkey, |
| 145 | rd->rmt_us[i].buf, rd->rmt_us[i].size); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | return 0; |
| 150 | } |
| 151 | |
| 152 | static int server_recv(struct thread_data *td, struct ibv_wc *wc) |
| 153 | { |
| 154 | struct rdmaio_data *rd = td->io_ops->data; |
| 155 | |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 156 | if (wc->wr_id == FIO_RDMA_MAX_IO_DEPTH) { |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 157 | rd->rdma_protocol = ntohl(rd->recv_buf.mode); |
| 158 | |
| 159 | /* CHANNEL semantic, do nothing */ |
| 160 | if (rd->rdma_protocol == FIO_RDMA_CHA_SEND) |
| 161 | rd->rdma_protocol = FIO_RDMA_CHA_RECV; |
| 162 | } |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | static int cq_event_handler(struct thread_data *td, enum ibv_wc_opcode opcode) |
| 168 | { |
| 169 | struct rdmaio_data *rd = td->io_ops->data; |
| 170 | struct ibv_wc wc; |
| 171 | struct rdma_io_u_data *r_io_u_d; |
| 172 | int ret; |
| 173 | int compevnum = 0; |
| 174 | int i; |
| 175 | |
| 176 | while ((ret = ibv_poll_cq(rd->cq, 1, &wc)) == 1) { |
| 177 | ret = 0; |
| 178 | compevnum++; |
| 179 | |
| 180 | if (wc.status) { |
| 181 | log_err("fio: cq completion status %d(%s)\n", |
| 182 | wc.status, ibv_wc_status_str(wc.status)); |
| 183 | return -1; |
| 184 | } |
| 185 | |
| 186 | switch (wc.opcode) { |
| 187 | |
| 188 | case IBV_WC_RECV: |
| 189 | if (rd->is_client == 1) |
| 190 | client_recv(td, &wc); |
| 191 | else |
| 192 | server_recv(td, &wc); |
| 193 | |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 194 | if (wc.wr_id == FIO_RDMA_MAX_IO_DEPTH) |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 195 | break; |
| 196 | |
| 197 | for (i = 0; i < rd->io_u_flight_nr; i++) { |
| 198 | r_io_u_d = rd->io_us_flight[i]->engine_data; |
| 199 | |
| 200 | if (wc.wr_id == r_io_u_d->rq_wr.wr_id) { |
| 201 | rd->io_us_flight[i]->resid = |
| 202 | rd->io_us_flight[i]->buflen |
| 203 | - wc.byte_len; |
| 204 | |
| 205 | rd->io_us_flight[i]->error = 0; |
| 206 | |
| 207 | rd->io_us_completed[rd-> |
| 208 | io_u_completed_nr] |
| 209 | = rd->io_us_flight[i]; |
| 210 | rd->io_u_completed_nr++; |
| 211 | break; |
| 212 | } |
| 213 | } |
| 214 | if (i == rd->io_u_flight_nr) |
Bart Van Assche | e07f72d | 2011-08-07 21:50:52 +0200 | [diff] [blame] | 215 | log_err("fio: recv wr %" PRId64 " not found\n", |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 216 | wc.wr_id); |
| 217 | else { |
| 218 | /* put the last one into middle of the list */ |
| 219 | rd->io_us_flight[i] = |
| 220 | rd->io_us_flight[rd->io_u_flight_nr - 1]; |
| 221 | rd->io_u_flight_nr--; |
| 222 | } |
| 223 | |
| 224 | break; |
| 225 | |
| 226 | case IBV_WC_SEND: |
| 227 | case IBV_WC_RDMA_WRITE: |
| 228 | case IBV_WC_RDMA_READ: |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 229 | if (wc.wr_id == FIO_RDMA_MAX_IO_DEPTH) |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 230 | break; |
| 231 | |
| 232 | for (i = 0; i < rd->io_u_flight_nr; i++) { |
| 233 | r_io_u_d = rd->io_us_flight[i]->engine_data; |
| 234 | |
| 235 | if (wc.wr_id == r_io_u_d->sq_wr.wr_id) { |
| 236 | rd->io_us_completed[rd-> |
| 237 | io_u_completed_nr] |
| 238 | = rd->io_us_flight[i]; |
| 239 | rd->io_u_completed_nr++; |
| 240 | break; |
| 241 | } |
| 242 | } |
| 243 | if (i == rd->io_u_flight_nr) |
Bart Van Assche | e07f72d | 2011-08-07 21:50:52 +0200 | [diff] [blame] | 244 | log_err("fio: send wr %" PRId64 " not found\n", |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 245 | wc.wr_id); |
| 246 | else { |
| 247 | /* put the last one into middle of the list */ |
| 248 | rd->io_us_flight[i] = |
| 249 | rd->io_us_flight[rd->io_u_flight_nr - 1]; |
| 250 | rd->io_u_flight_nr--; |
| 251 | } |
| 252 | |
| 253 | break; |
| 254 | |
| 255 | default: |
| 256 | log_info("fio: unknown completion event %d\n", |
| 257 | wc.opcode); |
| 258 | return -1; |
| 259 | } |
| 260 | rd->cq_event_num++; |
| 261 | } |
| 262 | if (ret) { |
| 263 | log_err("fio: poll error %d\n", ret); |
| 264 | return 1; |
| 265 | } |
| 266 | |
| 267 | return compevnum; |
| 268 | } |
| 269 | |
| 270 | /* |
| 271 | * Return -1 for error and 'nr events' for a positive number |
| 272 | * of events |
| 273 | */ |
| 274 | static int rdma_poll_wait(struct thread_data *td, enum ibv_wc_opcode opcode) |
| 275 | { |
| 276 | struct rdmaio_data *rd = td->io_ops->data; |
| 277 | struct ibv_cq *ev_cq; |
| 278 | void *ev_ctx; |
| 279 | int ret; |
| 280 | |
| 281 | if (rd->cq_event_num > 0) { /* previous left */ |
| 282 | rd->cq_event_num--; |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | again: |
| 287 | if (ibv_get_cq_event(rd->channel, &ev_cq, &ev_ctx) != 0) { |
| 288 | log_err("fio: Failed to get cq event!\n"); |
| 289 | return -1; |
| 290 | } |
| 291 | if (ev_cq != rd->cq) { |
| 292 | log_err("fio: Unknown CQ!\n"); |
| 293 | return -1; |
| 294 | } |
| 295 | if (ibv_req_notify_cq(rd->cq, 0) != 0) { |
| 296 | log_err("fio: Failed to set notify!\n"); |
| 297 | return -1; |
| 298 | } |
| 299 | |
| 300 | ret = cq_event_handler(td, opcode); |
| 301 | if (ret < 1) |
| 302 | goto again; |
| 303 | |
| 304 | ibv_ack_cq_events(rd->cq, ret); |
| 305 | |
| 306 | rd->cq_event_num--; |
| 307 | |
| 308 | return ret; |
| 309 | } |
| 310 | |
| 311 | static int fio_rdmaio_setup_qp(struct thread_data *td) |
| 312 | { |
| 313 | struct rdmaio_data *rd = td->io_ops->data; |
| 314 | struct ibv_qp_init_attr init_attr; |
| 315 | int qp_depth = td->o.iodepth * 2; /* 2 times of io depth */ |
| 316 | |
| 317 | if (rd->is_client == 0) |
| 318 | rd->pd = ibv_alloc_pd(rd->child_cm_id->verbs); |
| 319 | else |
| 320 | rd->pd = ibv_alloc_pd(rd->cm_id->verbs); |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 321 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 322 | if (rd->pd == NULL) { |
| 323 | log_err("fio: ibv_alloc_pd fail\n"); |
| 324 | return 1; |
| 325 | } |
| 326 | |
| 327 | if (rd->is_client == 0) |
| 328 | rd->channel = ibv_create_comp_channel(rd->child_cm_id->verbs); |
| 329 | else |
| 330 | rd->channel = ibv_create_comp_channel(rd->cm_id->verbs); |
| 331 | if (rd->channel == NULL) { |
| 332 | log_err("fio: ibv_create_comp_channel fail\n"); |
| 333 | goto err1; |
| 334 | } |
| 335 | |
| 336 | if (qp_depth < 16) |
| 337 | qp_depth = 16; |
| 338 | |
| 339 | if (rd->is_client == 0) |
| 340 | rd->cq = ibv_create_cq(rd->child_cm_id->verbs, |
| 341 | qp_depth, rd, rd->channel, 0); |
| 342 | else |
| 343 | rd->cq = ibv_create_cq(rd->cm_id->verbs, |
| 344 | qp_depth, rd, rd->channel, 0); |
| 345 | if (rd->cq == NULL) { |
| 346 | log_err("fio: ibv_create_cq failed\n"); |
| 347 | goto err2; |
| 348 | } |
| 349 | |
| 350 | if (ibv_req_notify_cq(rd->cq, 0) != 0) { |
| 351 | log_err("fio: ibv_create_cq failed\n"); |
| 352 | goto err3; |
| 353 | } |
| 354 | |
| 355 | /* create queue pair */ |
| 356 | memset(&init_attr, 0, sizeof(init_attr)); |
| 357 | init_attr.cap.max_send_wr = qp_depth; |
| 358 | init_attr.cap.max_recv_wr = qp_depth; |
| 359 | init_attr.cap.max_recv_sge = 1; |
| 360 | init_attr.cap.max_send_sge = 1; |
| 361 | init_attr.qp_type = IBV_QPT_RC; |
| 362 | init_attr.send_cq = rd->cq; |
| 363 | init_attr.recv_cq = rd->cq; |
| 364 | |
| 365 | if (rd->is_client == 0) { |
| 366 | if (rdma_create_qp(rd->child_cm_id, rd->pd, &init_attr) != 0) { |
| 367 | log_err("fio: rdma_create_qp failed\n"); |
| 368 | goto err3; |
| 369 | } |
| 370 | rd->qp = rd->child_cm_id->qp; |
| 371 | } else { |
| 372 | if (rdma_create_qp(rd->cm_id, rd->pd, &init_attr) != 0) { |
| 373 | log_err("fio: rdma_create_qp failed\n"); |
| 374 | goto err3; |
| 375 | } |
| 376 | rd->qp = rd->cm_id->qp; |
| 377 | } |
| 378 | |
| 379 | return 0; |
| 380 | |
| 381 | err3: |
| 382 | ibv_destroy_cq(rd->cq); |
| 383 | err2: |
| 384 | ibv_destroy_comp_channel(rd->channel); |
| 385 | err1: |
| 386 | ibv_dealloc_pd(rd->pd); |
| 387 | |
| 388 | return 1; |
| 389 | } |
| 390 | |
| 391 | static int fio_rdmaio_setup_control_msg_buffers(struct thread_data *td) |
| 392 | { |
| 393 | struct rdmaio_data *rd = td->io_ops->data; |
| 394 | |
| 395 | rd->recv_mr = ibv_reg_mr(rd->pd, &rd->recv_buf, sizeof(rd->recv_buf), |
| 396 | IBV_ACCESS_LOCAL_WRITE); |
| 397 | if (rd->recv_mr == NULL) { |
| 398 | log_err("fio: recv_buf reg_mr failed\n"); |
| 399 | return 1; |
| 400 | } |
| 401 | |
| 402 | rd->send_mr = ibv_reg_mr(rd->pd, &rd->send_buf, sizeof(rd->send_buf), |
| 403 | 0); |
| 404 | if (rd->send_mr == NULL) { |
| 405 | log_err("fio: send_buf reg_mr failed\n"); |
| 406 | ibv_dereg_mr(rd->recv_mr); |
| 407 | return 1; |
| 408 | } |
| 409 | |
| 410 | /* setup work request */ |
| 411 | /* recv wq */ |
| 412 | rd->recv_sgl.addr = (uint64_t) (unsigned long)&rd->recv_buf; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 413 | rd->recv_sgl.length = sizeof(rd->recv_buf); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 414 | rd->recv_sgl.lkey = rd->recv_mr->lkey; |
| 415 | rd->rq_wr.sg_list = &rd->recv_sgl; |
| 416 | rd->rq_wr.num_sge = 1; |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 417 | rd->rq_wr.wr_id = FIO_RDMA_MAX_IO_DEPTH; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 418 | |
| 419 | /* send wq */ |
| 420 | rd->send_sgl.addr = (uint64_t) (unsigned long)&rd->send_buf; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 421 | rd->send_sgl.length = sizeof(rd->send_buf); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 422 | rd->send_sgl.lkey = rd->send_mr->lkey; |
| 423 | |
| 424 | rd->sq_wr.opcode = IBV_WR_SEND; |
| 425 | rd->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 426 | rd->sq_wr.sg_list = &rd->send_sgl; |
| 427 | rd->sq_wr.num_sge = 1; |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 428 | rd->sq_wr.wr_id = FIO_RDMA_MAX_IO_DEPTH; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 429 | |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | static int get_next_channel_event(struct thread_data *td, |
| 434 | struct rdma_event_channel *channel, |
| 435 | enum rdma_cm_event_type wait_event) |
| 436 | { |
| 437 | struct rdmaio_data *rd = td->io_ops->data; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 438 | struct rdma_cm_event *event; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 439 | int ret; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 440 | |
| 441 | ret = rdma_get_cm_event(channel, &event); |
| 442 | if (ret) { |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 443 | log_err("fio: rdma_get_cm_event: %d\n", ret); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 444 | return 1; |
| 445 | } |
| 446 | |
| 447 | if (event->event != wait_event) { |
| 448 | log_err("fio: event is %s instead of %s\n", |
| 449 | rdma_event_str(event->event), |
| 450 | rdma_event_str(wait_event)); |
| 451 | return 1; |
| 452 | } |
| 453 | |
| 454 | switch (event->event) { |
| 455 | case RDMA_CM_EVENT_CONNECT_REQUEST: |
| 456 | rd->child_cm_id = event->id; |
| 457 | break; |
| 458 | default: |
| 459 | break; |
| 460 | } |
| 461 | |
| 462 | rdma_ack_cm_event(event); |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | static int fio_rdmaio_prep(struct thread_data *td, struct io_u *io_u) |
| 468 | { |
| 469 | struct rdmaio_data *rd = td->io_ops->data; |
| 470 | struct rdma_io_u_data *r_io_u_d; |
| 471 | |
| 472 | r_io_u_d = io_u->engine_data; |
| 473 | |
| 474 | switch (rd->rdma_protocol) { |
| 475 | case FIO_RDMA_MEM_WRITE: |
| 476 | case FIO_RDMA_MEM_READ: |
| 477 | r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; |
| 478 | r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; |
| 479 | r_io_u_d->sq_wr.wr_id = r_io_u_d->wr_id; |
| 480 | r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 481 | r_io_u_d->sq_wr.sg_list = &r_io_u_d->rdma_sgl; |
| 482 | r_io_u_d->sq_wr.num_sge = 1; |
| 483 | break; |
| 484 | case FIO_RDMA_CHA_SEND: |
| 485 | r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; |
| 486 | r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; |
| 487 | r_io_u_d->rdma_sgl.length = io_u->buflen; |
| 488 | r_io_u_d->sq_wr.wr_id = r_io_u_d->wr_id; |
| 489 | r_io_u_d->sq_wr.opcode = IBV_WR_SEND; |
| 490 | r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 491 | r_io_u_d->sq_wr.sg_list = &r_io_u_d->rdma_sgl; |
| 492 | r_io_u_d->sq_wr.num_sge = 1; |
| 493 | break; |
| 494 | case FIO_RDMA_CHA_RECV: |
| 495 | r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; |
| 496 | r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; |
| 497 | r_io_u_d->rdma_sgl.length = io_u->buflen; |
| 498 | r_io_u_d->rq_wr.wr_id = r_io_u_d->wr_id; |
| 499 | r_io_u_d->rq_wr.sg_list = &r_io_u_d->rdma_sgl; |
| 500 | r_io_u_d->rq_wr.num_sge = 1; |
| 501 | break; |
| 502 | default: |
| 503 | log_err("fio: unknown rdma protocol - %d\n", rd->rdma_protocol); |
| 504 | break; |
| 505 | } |
| 506 | |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | static struct io_u *fio_rdmaio_event(struct thread_data *td, int event) |
| 511 | { |
| 512 | struct rdmaio_data *rd = td->io_ops->data; |
| 513 | struct io_u *io_u; |
| 514 | int i; |
| 515 | |
| 516 | io_u = rd->io_us_completed[0]; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 517 | for (i = 0; i < rd->io_u_completed_nr - 1; i++) |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 518 | rd->io_us_completed[i] = rd->io_us_completed[i + 1]; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 519 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 520 | rd->io_u_completed_nr--; |
| 521 | |
| 522 | dprint_io_u(io_u, "fio_rdmaio_event"); |
| 523 | |
| 524 | return io_u; |
| 525 | } |
| 526 | |
| 527 | static int fio_rdmaio_getevents(struct thread_data *td, unsigned int min, |
| 528 | unsigned int max, struct timespec *t) |
| 529 | { |
| 530 | struct rdmaio_data *rd = td->io_ops->data; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 531 | enum ibv_wc_opcode comp_opcode; |
| 532 | comp_opcode = IBV_WC_RDMA_WRITE; |
| 533 | struct ibv_cq *ev_cq; |
| 534 | void *ev_ctx; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 535 | int ret, r = 0; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 536 | |
| 537 | switch (rd->rdma_protocol) { |
| 538 | case FIO_RDMA_MEM_WRITE: |
| 539 | comp_opcode = IBV_WC_RDMA_WRITE; |
| 540 | break; |
| 541 | case FIO_RDMA_MEM_READ: |
| 542 | comp_opcode = IBV_WC_RDMA_READ; |
| 543 | break; |
| 544 | case FIO_RDMA_CHA_SEND: |
| 545 | comp_opcode = IBV_WC_SEND; |
| 546 | break; |
| 547 | case FIO_RDMA_CHA_RECV: |
| 548 | comp_opcode = IBV_WC_RECV; |
| 549 | break; |
| 550 | default: |
| 551 | log_err("fio: unknown rdma protocol - %d\n", rd->rdma_protocol); |
| 552 | break; |
| 553 | } |
| 554 | |
| 555 | if (rd->cq_event_num > 0) { /* previous left */ |
| 556 | rd->cq_event_num--; |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | again: |
| 561 | if (ibv_get_cq_event(rd->channel, &ev_cq, &ev_ctx) != 0) { |
| 562 | log_err("fio: Failed to get cq event!\n"); |
| 563 | return -1; |
| 564 | } |
| 565 | if (ev_cq != rd->cq) { |
| 566 | log_err("fio: Unknown CQ!\n"); |
| 567 | return -1; |
| 568 | } |
| 569 | if (ibv_req_notify_cq(rd->cq, 0) != 0) { |
| 570 | log_err("fio: Failed to set notify!\n"); |
| 571 | return -1; |
| 572 | } |
| 573 | |
| 574 | ret = cq_event_handler(td, comp_opcode); |
| 575 | if (ret < 1) |
| 576 | goto again; |
| 577 | |
| 578 | ibv_ack_cq_events(rd->cq, ret); |
| 579 | |
| 580 | r += ret; |
| 581 | if (r < min) |
| 582 | goto again; |
| 583 | |
| 584 | rd->cq_event_num -= r; |
| 585 | |
| 586 | return r; |
| 587 | } |
| 588 | |
| 589 | static int fio_rdmaio_send(struct thread_data *td, struct io_u **io_us, |
| 590 | unsigned int nr) |
| 591 | { |
| 592 | struct rdmaio_data *rd = td->io_ops->data; |
| 593 | struct ibv_send_wr *bad_wr; |
Bart Van Assche | e07f72d | 2011-08-07 21:50:52 +0200 | [diff] [blame] | 594 | #if 0 |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 595 | enum ibv_wc_opcode comp_opcode; |
| 596 | comp_opcode = IBV_WC_RDMA_WRITE; |
Bart Van Assche | e07f72d | 2011-08-07 21:50:52 +0200 | [diff] [blame] | 597 | #endif |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 598 | int i; |
| 599 | long index; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 600 | struct rdma_io_u_data *r_io_u_d; |
| 601 | |
| 602 | r_io_u_d = NULL; |
| 603 | |
| 604 | for (i = 0; i < nr; i++) { |
| 605 | /* RDMA_WRITE or RDMA_READ */ |
| 606 | switch (rd->rdma_protocol) { |
| 607 | case FIO_RDMA_MEM_WRITE: |
| 608 | /* compose work request */ |
| 609 | r_io_u_d = io_us[i]->engine_data; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 610 | index = __rand(&rd->rand_state) % rd->rmt_nr; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 611 | r_io_u_d->sq_wr.opcode = IBV_WR_RDMA_WRITE; |
| 612 | r_io_u_d->sq_wr.wr.rdma.rkey = rd->rmt_us[index].rkey; |
Yufei Ren | b6cf38f | 2011-08-02 12:15:30 +0200 | [diff] [blame] | 613 | r_io_u_d->sq_wr.wr.rdma.remote_addr = \ |
| 614 | rd->rmt_us[index].buf; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 615 | r_io_u_d->sq_wr.sg_list->length = io_us[i]->buflen; |
| 616 | break; |
| 617 | case FIO_RDMA_MEM_READ: |
| 618 | /* compose work request */ |
| 619 | r_io_u_d = io_us[i]->engine_data; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 620 | index = __rand(&rd->rand_state) % rd->rmt_nr; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 621 | r_io_u_d->sq_wr.opcode = IBV_WR_RDMA_READ; |
| 622 | r_io_u_d->sq_wr.wr.rdma.rkey = rd->rmt_us[index].rkey; |
Yufei Ren | b6cf38f | 2011-08-02 12:15:30 +0200 | [diff] [blame] | 623 | r_io_u_d->sq_wr.wr.rdma.remote_addr = \ |
| 624 | rd->rmt_us[index].buf; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 625 | r_io_u_d->sq_wr.sg_list->length = io_us[i]->buflen; |
| 626 | break; |
| 627 | case FIO_RDMA_CHA_SEND: |
| 628 | r_io_u_d = io_us[i]->engine_data; |
| 629 | r_io_u_d->sq_wr.opcode = IBV_WR_SEND; |
| 630 | r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; |
| 631 | break; |
| 632 | default: |
| 633 | log_err("fio: unknown rdma protocol - %d\n", |
| 634 | rd->rdma_protocol); |
| 635 | break; |
| 636 | } |
| 637 | |
| 638 | if (ibv_post_send(rd->qp, &r_io_u_d->sq_wr, &bad_wr) != 0) { |
| 639 | log_err("fio: ibv_post_send fail\n"); |
| 640 | return -1; |
| 641 | } |
| 642 | |
| 643 | dprint_io_u(io_us[i], "fio_rdmaio_send"); |
| 644 | } |
| 645 | |
| 646 | /* wait for completion |
| 647 | rdma_poll_wait(td, comp_opcode); */ |
| 648 | |
| 649 | return i; |
| 650 | } |
| 651 | |
| 652 | static int fio_rdmaio_recv(struct thread_data *td, struct io_u **io_us, |
| 653 | unsigned int nr) |
| 654 | { |
| 655 | struct rdmaio_data *rd = td->io_ops->data; |
| 656 | struct ibv_recv_wr *bad_wr; |
| 657 | struct rdma_io_u_data *r_io_u_d; |
| 658 | int i; |
| 659 | |
| 660 | i = 0; |
| 661 | if (rd->rdma_protocol == FIO_RDMA_CHA_RECV) { |
| 662 | /* post io_u into recv queue */ |
| 663 | for (i = 0; i < nr; i++) { |
| 664 | r_io_u_d = io_us[i]->engine_data; |
| 665 | if (ibv_post_recv(rd->qp, &r_io_u_d->rq_wr, &bad_wr) != |
| 666 | 0) { |
| 667 | log_err("fio: ibv_post_recv fail\n"); |
| 668 | return 1; |
| 669 | } |
| 670 | } |
| 671 | } else if ((rd->rdma_protocol == FIO_RDMA_MEM_READ) |
| 672 | || (rd->rdma_protocol == FIO_RDMA_MEM_WRITE)) { |
| 673 | /* re-post the rq_wr */ |
| 674 | if (ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr) != 0) { |
| 675 | log_err("fio: ibv_post_recv fail\n"); |
| 676 | return 1; |
| 677 | } |
| 678 | |
| 679 | rdma_poll_wait(td, IBV_WC_RECV); |
| 680 | |
| 681 | dprint(FD_IO, "fio: recv FINISH message\n"); |
Yufei Ren | a05d62b | 2012-03-15 14:44:47 +0100 | [diff] [blame] | 682 | td->done = 1; |
| 683 | return 0; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | return i; |
| 687 | } |
| 688 | |
| 689 | static int fio_rdmaio_queue(struct thread_data *td, struct io_u *io_u) |
| 690 | { |
| 691 | struct rdmaio_data *rd = td->io_ops->data; |
| 692 | |
| 693 | fio_ro_check(td, io_u); |
| 694 | |
| 695 | if (rd->io_u_queued_nr == (int)td->o.iodepth) |
| 696 | return FIO_Q_BUSY; |
| 697 | |
| 698 | rd->io_us_queued[rd->io_u_queued_nr] = io_u; |
| 699 | rd->io_u_queued_nr++; |
| 700 | |
| 701 | dprint_io_u(io_u, "fio_rdmaio_queue"); |
| 702 | |
| 703 | return FIO_Q_QUEUED; |
| 704 | } |
| 705 | |
| 706 | static void fio_rdmaio_queued(struct thread_data *td, struct io_u **io_us, |
| 707 | unsigned int nr) |
| 708 | { |
| 709 | struct rdmaio_data *rd = td->io_ops->data; |
| 710 | struct timeval now; |
| 711 | unsigned int i; |
| 712 | |
| 713 | if (!fio_fill_issue_time(td)) |
| 714 | return; |
| 715 | |
| 716 | fio_gettime(&now, NULL); |
| 717 | |
| 718 | for (i = 0; i < nr; i++) { |
| 719 | struct io_u *io_u = io_us[i]; |
| 720 | |
| 721 | /* queued -> flight */ |
| 722 | rd->io_us_flight[rd->io_u_flight_nr] = io_u; |
| 723 | rd->io_u_flight_nr++; |
| 724 | |
| 725 | memcpy(&io_u->issue_time, &now, sizeof(now)); |
| 726 | io_u_queued(td, io_u); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | static int fio_rdmaio_commit(struct thread_data *td) |
| 731 | { |
| 732 | struct rdmaio_data *rd = td->io_ops->data; |
| 733 | struct io_u **io_us; |
| 734 | int ret; |
| 735 | |
| 736 | if (!rd->io_us_queued) |
| 737 | return 0; |
| 738 | |
| 739 | io_us = rd->io_us_queued; |
| 740 | do { |
| 741 | /* RDMA_WRITE or RDMA_READ */ |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 742 | if (rd->is_client) |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 743 | ret = fio_rdmaio_send(td, io_us, rd->io_u_queued_nr); |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 744 | else if (!rd->is_client) |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 745 | ret = fio_rdmaio_recv(td, io_us, rd->io_u_queued_nr); |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 746 | else |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 747 | ret = 0; /* must be a SYNC */ |
| 748 | |
| 749 | if (ret > 0) { |
| 750 | fio_rdmaio_queued(td, io_us, ret); |
| 751 | io_u_mark_submit(td, ret); |
| 752 | rd->io_u_queued_nr -= ret; |
| 753 | io_us += ret; |
| 754 | ret = 0; |
| 755 | } else |
| 756 | break; |
| 757 | } while (rd->io_u_queued_nr); |
| 758 | |
| 759 | return ret; |
| 760 | } |
| 761 | |
| 762 | static int fio_rdmaio_connect(struct thread_data *td, struct fio_file *f) |
| 763 | { |
| 764 | struct rdmaio_data *rd = td->io_ops->data; |
| 765 | struct rdma_conn_param conn_param; |
| 766 | struct ibv_send_wr *bad_wr; |
| 767 | |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 768 | memset(&conn_param, 0, sizeof(conn_param)); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 769 | conn_param.responder_resources = 1; |
| 770 | conn_param.initiator_depth = 1; |
| 771 | conn_param.retry_count = 10; |
| 772 | |
| 773 | if (rdma_connect(rd->cm_id, &conn_param) != 0) { |
| 774 | log_err("fio: rdma_connect fail\n"); |
| 775 | return 1; |
| 776 | } |
| 777 | |
| 778 | if (get_next_channel_event |
| 779 | (td, rd->cm_channel, RDMA_CM_EVENT_ESTABLISHED) != 0) { |
| 780 | log_err("fio: wait for RDMA_CM_EVENT_ESTABLISHED\n"); |
| 781 | return 1; |
| 782 | } |
| 783 | |
| 784 | /* send task request */ |
| 785 | rd->send_buf.mode = htonl(rd->rdma_protocol); |
| 786 | rd->send_buf.nr = htonl(td->o.iodepth); |
| 787 | |
| 788 | if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { |
| 789 | log_err("fio: ibv_post_send fail"); |
| 790 | return 1; |
| 791 | } |
| 792 | |
| 793 | rdma_poll_wait(td, IBV_WC_SEND); |
| 794 | |
| 795 | /* wait for remote MR info from server side */ |
| 796 | rdma_poll_wait(td, IBV_WC_RECV); |
| 797 | |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 798 | /* In SEND/RECV test, it's a good practice to setup the iodepth of |
| 799 | * of the RECV side deeper than that of the SEND side to |
| 800 | * avoid RNR (receiver not ready) error. The |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 801 | * SEND side may send so many unsolicited message before |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 802 | * RECV side commits sufficient recv buffers into recv queue. |
| 803 | * This may lead to RNR error. Here, SEND side pauses for a while |
| 804 | * during which RECV side commits sufficient recv buffers. |
| 805 | */ |
| 806 | usleep(500000); |
| 807 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static int fio_rdmaio_accept(struct thread_data *td, struct fio_file *f) |
| 812 | { |
| 813 | struct rdmaio_data *rd = td->io_ops->data; |
| 814 | struct rdma_conn_param conn_param; |
| 815 | struct ibv_send_wr *bad_wr; |
| 816 | |
| 817 | /* rdma_accept() - then wait for accept success */ |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 818 | memset(&conn_param, 0, sizeof(conn_param)); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 819 | conn_param.responder_resources = 1; |
| 820 | conn_param.initiator_depth = 1; |
| 821 | |
| 822 | if (rdma_accept(rd->child_cm_id, &conn_param) != 0) { |
| 823 | log_err("fio: rdma_accept\n"); |
| 824 | return 1; |
| 825 | } |
| 826 | |
| 827 | if (get_next_channel_event |
| 828 | (td, rd->cm_channel, RDMA_CM_EVENT_ESTABLISHED) != 0) { |
| 829 | log_err("fio: wait for RDMA_CM_EVENT_ESTABLISHED\n"); |
| 830 | return 1; |
| 831 | } |
| 832 | |
| 833 | /* wait for request */ |
| 834 | rdma_poll_wait(td, IBV_WC_RECV); |
| 835 | |
| 836 | if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { |
| 837 | log_err("fio: ibv_post_send fail"); |
| 838 | return 1; |
| 839 | } |
| 840 | |
| 841 | rdma_poll_wait(td, IBV_WC_SEND); |
| 842 | |
| 843 | return 0; |
| 844 | } |
| 845 | |
| 846 | static int fio_rdmaio_open_file(struct thread_data *td, struct fio_file *f) |
| 847 | { |
| 848 | if (td_read(td)) |
| 849 | return fio_rdmaio_accept(td, f); |
| 850 | else |
| 851 | return fio_rdmaio_connect(td, f); |
| 852 | } |
| 853 | |
| 854 | static int fio_rdmaio_close_file(struct thread_data *td, struct fio_file *f) |
| 855 | { |
| 856 | struct rdmaio_data *rd = td->io_ops->data; |
| 857 | struct ibv_send_wr *bad_wr; |
| 858 | |
| 859 | /* unregister rdma buffer */ |
| 860 | |
| 861 | /* |
| 862 | * Client sends notification to the server side |
| 863 | */ |
| 864 | /* refer to: http://linux.die.net/man/7/rdma_cm */ |
| 865 | if ((rd->is_client == 1) && ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) |
| 866 | || (rd->rdma_protocol == |
| 867 | FIO_RDMA_MEM_READ))) { |
| 868 | if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { |
| 869 | log_err("fio: ibv_post_send fail"); |
| 870 | return 1; |
| 871 | } |
| 872 | |
| 873 | dprint(FD_IO, "fio: close infomation sent success\n"); |
| 874 | rdma_poll_wait(td, IBV_WC_SEND); |
| 875 | } |
| 876 | |
| 877 | if (rd->is_client == 1) |
| 878 | rdma_disconnect(rd->cm_id); |
| 879 | else { |
| 880 | rdma_disconnect(rd->child_cm_id); |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 881 | #if 0 |
| 882 | rdma_disconnect(rd->cm_id); |
| 883 | #endif |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 884 | } |
| 885 | |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 886 | #if 0 |
| 887 | if (get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_DISCONNECTED) != 0) { |
| 888 | log_err("fio: wait for RDMA_CM_EVENT_DISCONNECTED\n"); |
| 889 | return 1; |
| 890 | } |
| 891 | #endif |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 892 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 893 | ibv_destroy_cq(rd->cq); |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 894 | ibv_destroy_qp(rd->qp); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 895 | |
| 896 | if (rd->is_client == 1) |
| 897 | rdma_destroy_id(rd->cm_id); |
| 898 | else { |
| 899 | rdma_destroy_id(rd->child_cm_id); |
| 900 | rdma_destroy_id(rd->cm_id); |
| 901 | } |
| 902 | |
| 903 | ibv_destroy_comp_channel(rd->channel); |
| 904 | ibv_dealloc_pd(rd->pd); |
| 905 | |
| 906 | return 0; |
| 907 | } |
| 908 | |
| 909 | static int fio_rdmaio_setup_connect(struct thread_data *td, const char *host, |
| 910 | unsigned short port) |
| 911 | { |
| 912 | struct rdmaio_data *rd = td->io_ops->data; |
| 913 | struct ibv_recv_wr *bad_wr; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 914 | int err; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 915 | |
| 916 | rd->addr.sin_family = AF_INET; |
| 917 | rd->addr.sin_port = htons(port); |
| 918 | |
| 919 | if (inet_aton(host, &rd->addr.sin_addr) != 1) { |
| 920 | struct hostent *hent; |
| 921 | |
| 922 | hent = gethostbyname(host); |
| 923 | if (!hent) { |
| 924 | td_verror(td, errno, "gethostbyname"); |
| 925 | return 1; |
| 926 | } |
| 927 | |
| 928 | memcpy(&rd->addr.sin_addr, hent->h_addr, 4); |
| 929 | } |
| 930 | |
| 931 | /* resolve route */ |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 932 | err = rdma_resolve_addr(rd->cm_id, NULL, (struct sockaddr *)&rd->addr, 2000); |
| 933 | if (err != 0) { |
| 934 | log_err("fio: rdma_resolve_addr: %d\n", err); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 935 | return 1; |
| 936 | } |
| 937 | |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 938 | err = get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_ADDR_RESOLVED); |
| 939 | if (err != 0) { |
| 940 | log_err("fio: get_next_channel_event: %d\n", err); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 941 | return 1; |
| 942 | } |
| 943 | |
| 944 | /* resolve route */ |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 945 | err = rdma_resolve_route(rd->cm_id, 2000); |
| 946 | if (err != 0) { |
| 947 | log_err("fio: rdma_resolve_route: %d\n", err); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 948 | return 1; |
| 949 | } |
| 950 | |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 951 | err = get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_ROUTE_RESOLVED); |
| 952 | if (err != 0) { |
| 953 | log_err("fio: get_next_channel_event: %d\n", err); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 954 | return 1; |
| 955 | } |
| 956 | |
| 957 | /* create qp and buffer */ |
| 958 | if (fio_rdmaio_setup_qp(td) != 0) |
| 959 | return 1; |
| 960 | |
| 961 | if (fio_rdmaio_setup_control_msg_buffers(td) != 0) |
| 962 | return 1; |
| 963 | |
| 964 | /* post recv buf */ |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 965 | err = ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr); |
| 966 | if (err != 0) { |
| 967 | log_err("fio: ibv_post_recv fail: %d\n", err); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 968 | return 1; |
| 969 | } |
| 970 | |
| 971 | return 0; |
| 972 | } |
| 973 | |
| 974 | static int fio_rdmaio_setup_listen(struct thread_data *td, short port) |
| 975 | { |
| 976 | struct rdmaio_data *rd = td->io_ops->data; |
| 977 | struct ibv_recv_wr *bad_wr; |
| 978 | |
| 979 | rd->addr.sin_family = AF_INET; |
| 980 | rd->addr.sin_addr.s_addr = htonl(INADDR_ANY); |
| 981 | rd->addr.sin_port = htons(port); |
| 982 | |
| 983 | /* rdma_listen */ |
| 984 | if (rdma_bind_addr(rd->cm_id, (struct sockaddr *)&rd->addr) != 0) { |
| 985 | log_err("fio: rdma_bind_addr fail\n"); |
| 986 | return 1; |
| 987 | } |
| 988 | |
| 989 | if (rdma_listen(rd->cm_id, 3) != 0) { |
| 990 | log_err("fio: rdma_listen fail\n"); |
| 991 | return 1; |
| 992 | } |
| 993 | |
| 994 | /* wait for CONNECT_REQUEST */ |
| 995 | if (get_next_channel_event |
| 996 | (td, rd->cm_channel, RDMA_CM_EVENT_CONNECT_REQUEST) != 0) { |
| 997 | log_err("fio: wait for RDMA_CM_EVENT_CONNECT_REQUEST\n"); |
| 998 | return 1; |
| 999 | } |
| 1000 | |
| 1001 | if (fio_rdmaio_setup_qp(td) != 0) |
| 1002 | return 1; |
| 1003 | |
| 1004 | if (fio_rdmaio_setup_control_msg_buffers(td) != 0) |
| 1005 | return 1; |
| 1006 | |
| 1007 | /* post recv buf */ |
| 1008 | if (ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr) != 0) { |
| 1009 | log_err("fio: ibv_post_recv fail\n"); |
| 1010 | return 1; |
| 1011 | } |
| 1012 | |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | static int fio_rdmaio_init(struct thread_data *td) |
| 1017 | { |
| 1018 | struct rdmaio_data *rd = td->io_ops->data; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 1019 | struct flist_head *entry; |
| 1020 | unsigned int max_bs; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1021 | unsigned int port; |
| 1022 | char host[64], buf[128]; |
| 1023 | char *sep, *portp, *modep; |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 1024 | int ret, i = 0; |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1025 | struct rlimit rl; |
| 1026 | |
| 1027 | if (td_rw(td)) { |
| 1028 | log_err("fio: rdma connections must be read OR write\n"); |
| 1029 | return 1; |
| 1030 | } |
| 1031 | if (td_random(td)) { |
| 1032 | log_err("fio: RDMA network IO can't be random\n"); |
| 1033 | return 1; |
| 1034 | } |
| 1035 | |
| 1036 | /* check RLIMIT_MEMLOCK */ |
| 1037 | if (getrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| 1038 | log_err("fio: getrlimit fail: %d(%s)\n", |
| 1039 | errno, strerror(errno)); |
| 1040 | return 1; |
| 1041 | } |
| 1042 | |
| 1043 | /* soft limit */ |
| 1044 | if ((rl.rlim_cur != RLIM_INFINITY) |
| 1045 | && (rl.rlim_cur < td->orig_buffer_size)) { |
Bart Van Assche | e07f72d | 2011-08-07 21:50:52 +0200 | [diff] [blame] | 1046 | log_err("fio: soft RLIMIT_MEMLOCK is: %" PRId64 "\n", |
| 1047 | rl.rlim_cur); |
| 1048 | log_err("fio: total block size is: %zd\n", |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1049 | td->orig_buffer_size); |
| 1050 | /* try to set larger RLIMIT_MEMLOCK */ |
| 1051 | rl.rlim_cur = rl.rlim_max; |
| 1052 | if (setrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| 1053 | log_err("fio: setrlimit fail: %d(%s)\n", |
| 1054 | errno, strerror(errno)); |
| 1055 | log_err("fio: you may try enlarge MEMLOCK by root\n"); |
| 1056 | log_err("# ulimit -l unlimited\n"); |
| 1057 | return 1; |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | strcpy(buf, td->o.filename); |
| 1062 | |
| 1063 | sep = strchr(buf, '/'); |
| 1064 | if (!sep) |
| 1065 | goto bad_host; |
| 1066 | |
| 1067 | *sep = '\0'; |
| 1068 | sep++; |
| 1069 | strcpy(host, buf); |
| 1070 | if (!strlen(host)) |
| 1071 | goto bad_host; |
| 1072 | |
| 1073 | modep = NULL; |
| 1074 | portp = sep; |
| 1075 | sep = strchr(portp, '/'); |
| 1076 | if (sep) { |
| 1077 | *sep = '\0'; |
| 1078 | modep = sep + 1; |
| 1079 | } |
| 1080 | |
| 1081 | port = strtol(portp, NULL, 10); |
| 1082 | if (!port || port > 65535) |
| 1083 | goto bad_host; |
| 1084 | |
| 1085 | if (modep) { |
| 1086 | if (!strncmp("rdma_write", modep, strlen(modep)) || |
| 1087 | !strncmp("RDMA_WRITE", modep, strlen(modep))) |
| 1088 | rd->rdma_protocol = FIO_RDMA_MEM_WRITE; |
| 1089 | else if (!strncmp("rdma_read", modep, strlen(modep)) || |
| 1090 | !strncmp("RDMA_READ", modep, strlen(modep))) |
| 1091 | rd->rdma_protocol = FIO_RDMA_MEM_READ; |
| 1092 | else if (!strncmp("send", modep, strlen(modep)) || |
| 1093 | !strncmp("SEND", modep, strlen(modep))) |
| 1094 | rd->rdma_protocol = FIO_RDMA_CHA_SEND; |
| 1095 | else |
| 1096 | goto bad_host; |
| 1097 | } else |
| 1098 | rd->rdma_protocol = FIO_RDMA_MEM_WRITE; |
| 1099 | |
| 1100 | rd->cq_event_num = 0; |
| 1101 | |
| 1102 | rd->cm_channel = rdma_create_event_channel(); |
| 1103 | if (!rd->cm_channel) { |
| 1104 | log_err("fio: rdma_create_event_channel fail\n"); |
| 1105 | return 1; |
| 1106 | } |
| 1107 | |
| 1108 | ret = rdma_create_id(rd->cm_channel, &rd->cm_id, rd, RDMA_PS_TCP); |
| 1109 | if (ret) { |
| 1110 | log_err("fio: rdma_create_id fail\n"); |
| 1111 | return 1; |
| 1112 | } |
| 1113 | |
| 1114 | if ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) || |
| 1115 | (rd->rdma_protocol == FIO_RDMA_MEM_READ)) { |
| 1116 | rd->rmt_us = |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 1117 | malloc(FIO_RDMA_MAX_IO_DEPTH * sizeof(struct remote_u)); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1118 | memset(rd->rmt_us, 0, |
Bart Van Assche | 76cc522 | 2011-08-07 21:50:51 +0200 | [diff] [blame] | 1119 | FIO_RDMA_MAX_IO_DEPTH * sizeof(struct remote_u)); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1120 | rd->rmt_nr = 0; |
| 1121 | } |
| 1122 | |
| 1123 | rd->io_us_queued = malloc(td->o.iodepth * sizeof(struct io_u *)); |
| 1124 | memset(rd->io_us_queued, 0, td->o.iodepth * sizeof(struct io_u *)); |
| 1125 | rd->io_u_queued_nr = 0; |
| 1126 | |
| 1127 | rd->io_us_flight = malloc(td->o.iodepth * sizeof(struct io_u *)); |
| 1128 | memset(rd->io_us_flight, 0, td->o.iodepth * sizeof(struct io_u *)); |
| 1129 | rd->io_u_flight_nr = 0; |
| 1130 | |
| 1131 | rd->io_us_completed = malloc(td->o.iodepth * sizeof(struct io_u *)); |
| 1132 | memset(rd->io_us_completed, 0, td->o.iodepth * sizeof(struct io_u *)); |
| 1133 | rd->io_u_completed_nr = 0; |
| 1134 | |
| 1135 | if (td_read(td)) { /* READ as the server */ |
| 1136 | rd->is_client = 0; |
| 1137 | /* server rd->rdma_buf_len will be setup after got request */ |
| 1138 | ret = fio_rdmaio_setup_listen(td, port); |
| 1139 | } else { /* WRITE as the client */ |
| 1140 | rd->is_client = 1; |
| 1141 | ret = fio_rdmaio_setup_connect(td, host, port); |
| 1142 | } |
| 1143 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1144 | max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); |
| 1145 | /* register each io_u in the free list */ |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1146 | flist_for_each(entry, &td->io_u_freelist) { |
| 1147 | struct io_u *io_u = flist_entry(entry, struct io_u, list); |
| 1148 | |
| 1149 | io_u->engine_data = malloc(sizeof(struct rdma_io_u_data)); |
| 1150 | memset(io_u->engine_data, 0, sizeof(struct rdma_io_u_data)); |
| 1151 | ((struct rdma_io_u_data *)io_u->engine_data)->wr_id = i; |
| 1152 | |
| 1153 | io_u->mr = ibv_reg_mr(rd->pd, io_u->buf, max_bs, |
| 1154 | IBV_ACCESS_LOCAL_WRITE | |
| 1155 | IBV_ACCESS_REMOTE_READ | |
| 1156 | IBV_ACCESS_REMOTE_WRITE); |
| 1157 | if (io_u->mr == NULL) { |
| 1158 | log_err("fio: ibv_reg_mr io_u failed\n"); |
| 1159 | return 1; |
| 1160 | } |
| 1161 | |
| 1162 | rd->send_buf.rmt_us[i].buf = |
| 1163 | htonll((uint64_t) (unsigned long)io_u->buf); |
| 1164 | rd->send_buf.rmt_us[i].rkey = htonl(io_u->mr->rkey); |
| 1165 | rd->send_buf.rmt_us[i].size = htonl(max_bs); |
| 1166 | |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 1167 | #if 0 |
| 1168 | log_info("fio: Send rkey %x addr %" PRIx64 " len %d to client\n", io_u->mr->rkey, io_u->buf, max_bs); */ |
| 1169 | #endif |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1170 | i++; |
| 1171 | } |
| 1172 | |
| 1173 | rd->send_buf.nr = htonl(i); |
| 1174 | |
| 1175 | return ret; |
| 1176 | bad_host: |
| 1177 | log_err("fio: bad rdma host/port/protocol: %s\n", td->o.filename); |
| 1178 | return 1; |
| 1179 | } |
| 1180 | |
| 1181 | static void fio_rdmaio_cleanup(struct thread_data *td) |
| 1182 | { |
| 1183 | struct rdmaio_data *rd = td->io_ops->data; |
| 1184 | |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 1185 | if (rd) |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1186 | free(rd); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | static int fio_rdmaio_setup(struct thread_data *td) |
| 1190 | { |
| 1191 | struct rdmaio_data *rd; |
| 1192 | |
| 1193 | if (!td->io_ops->data) { |
Jens Axboe | 222757c | 2012-10-24 14:16:45 +0200 | [diff] [blame] | 1194 | rd = malloc(sizeof(*rd)); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1195 | |
| 1196 | memset(rd, 0, sizeof(*rd)); |
Jens Axboe | ee88d05 | 2012-10-24 14:06:35 +0200 | [diff] [blame] | 1197 | init_rand_seed(&rd->rand_state, (unsigned int) GOLDEN_RATIO_PRIME); |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1198 | td->io_ops->data = rd; |
| 1199 | } |
| 1200 | |
| 1201 | return 0; |
| 1202 | } |
| 1203 | |
| 1204 | static struct ioengine_ops ioengine_rw = { |
Yufei Ren | b6cf38f | 2011-08-02 12:15:30 +0200 | [diff] [blame] | 1205 | .name = "rdma", |
| 1206 | .version = FIO_IOOPS_VERSION, |
| 1207 | .setup = fio_rdmaio_setup, |
| 1208 | .init = fio_rdmaio_init, |
| 1209 | .prep = fio_rdmaio_prep, |
| 1210 | .queue = fio_rdmaio_queue, |
| 1211 | .commit = fio_rdmaio_commit, |
| 1212 | .getevents = fio_rdmaio_getevents, |
| 1213 | .event = fio_rdmaio_event, |
| 1214 | .cleanup = fio_rdmaio_cleanup, |
| 1215 | .open_file = fio_rdmaio_open_file, |
| 1216 | .close_file = fio_rdmaio_close_file, |
| 1217 | .flags = FIO_DISKLESSIO | FIO_UNIDIR | FIO_PIPEIO, |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1218 | }; |
| 1219 | |
ren yufei | 21b8aee | 2011-08-01 10:01:57 +0200 | [diff] [blame] | 1220 | static void fio_init fio_rdmaio_register(void) |
| 1221 | { |
| 1222 | register_ioengine(&ioengine_rw); |
| 1223 | } |
| 1224 | |
| 1225 | static void fio_exit fio_rdmaio_unregister(void) |
| 1226 | { |
| 1227 | unregister_ioengine(&ioengine_rw); |
| 1228 | } |