contrib/ofed/libibverbs/examples/srq_pingpong.c

   1 /*
   2  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #if HAVE_CONFIG_H
  34 #  include <config.h>
  35 #endif /* HAVE_CONFIG_H */
  36
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40 #include <string.h>
  41 #include <sys/types.h>
  42 #include <sys/socket.h>
  43 #include <sys/time.h>
  44 #include <netdb.h>
  45 #include <getopt.h>
  46 #include <arpa/inet.h>
  47 #include <time.h>
  48
  49 #include "pingpong.h"
  50
  51 enum {
  52         PINGPONG_RECV_WRID = 1,
  53         PINGPONG_SEND_WRID = 2,
  54
  55         MAX_QP             = 256,
  56 };
  57
  58 static int page_size;
  59
  60 struct pingpong_context {
  61         struct ibv_context      *context;
  62         struct ibv_comp_channel *channel;
  63         struct ibv_pd           *pd;
  64         struct ibv_mr           *mr;
  65         struct ibv_cq           *cq;
  66         struct ibv_srq          *srq;
  67         struct ibv_qp           *qp[MAX_QP];
  68         void                    *buf;
  69         int                      size;
  70         int                      num_qp;
  71         int                      rx_depth;
  72         int                      pending[MAX_QP];
  73         struct ibv_port_attr     portinfo;
  74 };
  75
  76 struct pingpong_dest {
  77         int lid;
  78         int qpn;
  79         int psn;
  80         union ibv_gid gid;
  81 };
  82
  83 static int pp_connect_ctx(struct pingpong_context *ctx, int port, enum ibv_mtu mtu,
  84                           int sl, const struct pingpong_dest *my_dest,
  85                           const struct pingpong_dest *dest, int sgid_idx)
  86 {
  87         int i;
  88
  89         for (i = 0; i < ctx->num_qp; ++i) {
  90                 struct ibv_qp_attr attr = {
  91                         .qp_state               = IBV_QPS_RTR,
  92                         .path_mtu               = mtu,
  93                         .dest_qp_num            = dest[i].qpn,
  94                         .rq_psn                 = dest[i].psn,
  95                         .max_dest_rd_atomic     = 1,
  96                         .min_rnr_timer          = 12,
  97                         .ah_attr                = {
  98                                 .is_global      = 0,
  99                                 .dlid           = dest[i].lid,
 100                                 .sl             = sl,
 101                                 .src_path_bits  = 0,
 102                                 .port_num       = port
 103                         }
 104                 };
 105
 106                 if (dest->gid.global.interface_id) {
 107                         attr.ah_attr.is_global = 1;
 108                         attr.ah_attr.grh.hop_limit = 1;
 109                         attr.ah_attr.grh.dgid = dest->gid;
 110                         attr.ah_attr.grh.sgid_index = sgid_idx;
 111                 }
 112                 if (ibv_modify_qp(ctx->qp[i], &attr,
 113                                   IBV_QP_STATE              |
 114                                   IBV_QP_AV                 |
 115                                   IBV_QP_PATH_MTU           |
 116                                   IBV_QP_DEST_QPN           |
 117                                   IBV_QP_RQ_PSN             |
 118                                   IBV_QP_MAX_DEST_RD_ATOMIC |
 119                                   IBV_QP_MIN_RNR_TIMER)) {
 120                         fprintf(stderr, "Failed to modify QP[%d] to RTR\n", i);
 121                         return 1;
 122                 }
 123
 124                 attr.qp_state       = IBV_QPS_RTS;
 125                 attr.timeout        = 14;
 126                 attr.retry_cnt      = 7;
 127                 attr.rnr_retry      = 7;
 128                 attr.sq_psn         = my_dest[i].psn;
 129                 attr.max_rd_atomic  = 1;
 130                 if (ibv_modify_qp(ctx->qp[i], &attr,
 131                                   IBV_QP_STATE              |
 132                                   IBV_QP_TIMEOUT            |
 133                                   IBV_QP_RETRY_CNT          |
 134                                   IBV_QP_RNR_RETRY          |
 135                                   IBV_QP_SQ_PSN             |
 136                                   IBV_QP_MAX_QP_RD_ATOMIC)) {
 137                         fprintf(stderr, "Failed to modify QP[%d] to RTS\n", i);
 138                         return 1;
 139                 }
 140         }
 141
 142         return 0;
 143 }
 144
 145 static struct pingpong_dest *pp_client_exch_dest(const char *servername, int port,
 146                                                  const struct pingpong_dest *my_dest)
 147 {
 148         struct addrinfo *res, *t;
 149         struct addrinfo hints = {
 150                 .ai_family   = AF_INET,
 151                 .ai_socktype = SOCK_STREAM
 152         };
 153         char *service;
 154         char msg[sizeof "0000:000000:000000:00000000000000000000000000000000"];
 155         int n;
 156         int r;
 157         int i;
 158         int sockfd = -1;
 159         struct pingpong_dest *rem_dest = NULL;
 160         char gid[33];
 161
 162         if (asprintf(&service, "%d", port) < 0)
 163                 return NULL;
 164
 165         n = getaddrinfo(servername, service, &hints, &res);
 166
 167         if (n < 0) {
 168                 fprintf(stderr, "%s for %s:%d\n", gai_strerror(n), servername, port);
 169                 free(service);
 170                 return NULL;
 171         }
 172
 173         for (t = res; t; t = t->ai_next) {
 174                 sockfd = socket(t->ai_family, t->ai_socktype, t->ai_protocol);
 175                 if (sockfd >= 0) {
 176                         if (!connect(sockfd, t->ai_addr, t->ai_addrlen))
 177                                 break;
 178                         close(sockfd);
 179                         sockfd = -1;
 180                 }
 181         }
 182
 183         freeaddrinfo(res);
 184         free(service);
 185
 186         if (sockfd < 0) {
 187                 fprintf(stderr, "Couldn't connect to %s:%d\n", servername, port);
 188                 return NULL;
 189         }
 190
 191         for (i = 0; i < MAX_QP; ++i) {
 192                 gid_to_wire_gid(&my_dest[i].gid, gid);
 193                 sprintf(msg, "%04x:%06x:%06x:%s", my_dest[i].lid, my_dest[i].qpn, my_dest[i].psn, gid);
 194                 if (write(sockfd, msg, sizeof msg) != sizeof msg) {
 195                         fprintf(stderr, "Couldn't send local address\n");
 196                         goto out;
 197                 }
 198         }
 199
 200         rem_dest = malloc(MAX_QP * sizeof *rem_dest);
 201         if (!rem_dest)
 202                 goto out;
 203
 204         for (i = 0; i < MAX_QP; ++i) {
 205                 n = 0;
 206                 while (n < sizeof msg) {
 207                         r = read(sockfd, msg + n, sizeof msg - n);
 208                         if (r < 0) {
 209                                 perror("client read");
 210                                 fprintf(stderr, "%d/%d: Couldn't read remote address [%d]\n",
 211                                         n, (int) sizeof msg, i);
 212                                 goto out;
 213                         }
 214                         n += r;
 215                 }
 216
 217                 sscanf(msg, "%x:%x:%x:%s",
 218                        &rem_dest[i].lid, &rem_dest[i].qpn, &rem_dest[i].psn, gid);
 219                 wire_gid_to_gid(gid, &rem_dest[i].gid);
 220         }
 221
 222         write(sockfd, "done", sizeof "done");
 223
 224 out:
 225         close(sockfd);
 226         return rem_dest;
 227 }
 228
 229 static struct pingpong_dest *pp_server_exch_dest(struct pingpong_context *ctx,
 230                                                  int ib_port, enum ibv_mtu mtu,
 231                                                  int port, int sl,
 232                                                  const struct pingpong_dest *my_dest,
 233                                                  int sgid_idx)
 234 {
 235         struct addrinfo *res, *t;
 236         struct addrinfo hints = {
 237                 .ai_flags    = AI_PASSIVE,
 238                 .ai_family   = AF_INET,
 239                 .ai_socktype = SOCK_STREAM
 240         };
 241         char *service;
 242         char msg[sizeof "0000:000000:000000:00000000000000000000000000000000"];
 243         int n;
 244         int r;
 245         int i;
 246         int sockfd = -1, connfd;
 247         struct pingpong_dest *rem_dest = NULL;
 248         char gid[33];
 249
 250         if (asprintf(&service, "%d", port) < 0)
 251                 return NULL;
 252
 253         n = getaddrinfo(NULL, service, &hints, &res);
 254
 255         if (n < 0) {
 256                 fprintf(stderr, "%s for port %d\n", gai_strerror(n), port);
 257                 free(service);
 258                 return NULL;
 259         }
 260
 261         for (t = res; t; t = t->ai_next) {
 262                 sockfd = socket(t->ai_family, t->ai_socktype, t->ai_protocol);
 263                 if (sockfd >= 0) {
 264                         n = 1;
 265
 266                         setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n);
 267
 268                         if (!bind(sockfd, t->ai_addr, t->ai_addrlen))
 269                                 break;
 270                         close(sockfd);
 271                         sockfd = -1;
 272                 }
 273         }
 274
 275         freeaddrinfo(res);
 276         free(service);
 277
 278         if (sockfd < 0) {
 279                 fprintf(stderr, "Couldn't listen to port %d\n", port);
 280                 return NULL;
 281         }
 282
 283         listen(sockfd, 1);
 284         connfd = accept(sockfd, NULL, 0);
 285         close(sockfd);
 286         if (connfd < 0) {
 287                 fprintf(stderr, "accept() failed\n");
 288                 return NULL;
 289         }
 290
 291         rem_dest = malloc(MAX_QP * sizeof *rem_dest);
 292         if (!rem_dest)
 293                 goto out;
 294
 295         for (i = 0; i < MAX_QP; ++i) {
 296                 n = 0;
 297                 while (n < sizeof msg) {
 298                         r = read(connfd, msg + n, sizeof msg - n);
 299                         if (r < 0) {
 300                                 perror("server read");
 301                                 fprintf(stderr, "%d/%d: Couldn't read remote address [%d]\n",
 302                                         n, (int) sizeof msg, i);
 303                                 goto out;
 304                         }
 305                         n += r;
 306                 }
 307
 308                 sscanf(msg, "%x:%x:%x:%s",
 309                        &rem_dest[i].lid, &rem_dest[i].qpn, &rem_dest[i].psn, gid);
 310                 wire_gid_to_gid(gid, &rem_dest[i].gid);
 311         }
 312
 313         if (pp_connect_ctx(ctx, ib_port, mtu, sl, my_dest, rem_dest, sgid_idx)) {
 314                 fprintf(stderr, "Couldn't connect to remote QP\n");
 315                 free(rem_dest);
 316                 rem_dest = NULL;
 317                 goto out;
 318         }
 319
 320         for (i = 0; i < MAX_QP; ++i) {
 321                 gid_to_wire_gid(&my_dest[i].gid, gid);
 322                 sprintf(msg, "%04x:%06x:%06x:%s", my_dest[i].lid, my_dest[i].qpn, my_dest[i].psn, gid);
 323                 if (write(connfd, msg, sizeof msg) != sizeof msg) {
 324                         fprintf(stderr, "Couldn't send local address\n");
 325                         free(rem_dest);
 326                         rem_dest = NULL;
 327                         goto out;
 328                 }
 329         }
 330
 331         read(connfd, msg, sizeof msg);
 332
 333 out:
 334         close(connfd);
 335         return rem_dest;
 336 }
 337
 338 static struct pingpong_context *pp_init_ctx(struct ibv_device *ib_dev, int size,
 339                                             int num_qp, int rx_depth, int port,
 340                                             int use_event)
 341 {
 342         struct pingpong_context *ctx;
 343         int i;
 344
 345         ctx = calloc(1, sizeof *ctx);
 346         if (!ctx)
 347                 return NULL;
 348
 349         ctx->size     = size;
 350         ctx->num_qp   = num_qp;
 351         ctx->rx_depth = rx_depth;
 352
 353         ctx->buf = malloc(roundup(size, page_size));
 354         if (!ctx->buf) {
 355                 fprintf(stderr, "Couldn't allocate work buf.\n");
 356                 return NULL;
 357         }
 358
 359         memset(ctx->buf, 0, size);
 360
 361         ctx->context = ibv_open_device(ib_dev);
 362         if (!ctx->context) {
 363                 fprintf(stderr, "Couldn't get context for %s\n",
 364                         ibv_get_device_name(ib_dev));
 365                 return NULL;
 366         }
 367
 368         if (use_event) {
 369                 ctx->channel = ibv_create_comp_channel(ctx->context);
 370                 if (!ctx->channel) {
 371                         fprintf(stderr, "Couldn't create completion channel\n");
 372                         return NULL;
 373                 }
 374         } else
 375                 ctx->channel = NULL;
 376
 377         ctx->pd = ibv_alloc_pd(ctx->context);
 378         if (!ctx->pd) {
 379                 fprintf(stderr, "Couldn't allocate PD\n");
 380                 return NULL;
 381         }
 382
 383         ctx->mr = ibv_reg_mr(ctx->pd, ctx->buf, size, IBV_ACCESS_LOCAL_WRITE);
 384         if (!ctx->mr) {
 385                 fprintf(stderr, "Couldn't register MR\n");
 386                 return NULL;
 387         }
 388
 389         ctx->cq = ibv_create_cq(ctx->context, rx_depth + num_qp, NULL,
 390                                 ctx->channel, 0);
 391         if (!ctx->cq) {
 392                 fprintf(stderr, "Couldn't create CQ\n");
 393                 return NULL;
 394         }
 395
 396         {
 397                 struct ibv_srq_init_attr attr = {
 398                         .attr = {
 399                                 .max_wr  = rx_depth,
 400                                 .max_sge = 1
 401                         }
 402                 };
 403
 404                 ctx->srq = ibv_create_srq(ctx->pd, &attr);
 405                 if (!ctx->srq)  {
 406                         fprintf(stderr, "Couldn't create SRQ\n");
 407                         return NULL;
 408                 }
 409         }
 410
 411         for (i = 0; i < num_qp; ++i) {
 412                 struct ibv_qp_init_attr attr = {
 413                         .send_cq = ctx->cq,
 414                         .recv_cq = ctx->cq,
 415                         .srq     = ctx->srq,
 416                         .cap     = {
 417                                 .max_send_wr  = 1,
 418                                 .max_send_sge = 1,
 419                         },
 420                         .qp_type = IBV_QPT_RC
 421                 };
 422
 423                 ctx->qp[i] = ibv_create_qp(ctx->pd, &attr);
 424                 if (!ctx->qp[i])  {
 425                         fprintf(stderr, "Couldn't create QP[%d]\n", i);
 426                         return NULL;
 427                 }
 428         }
 429
 430         for (i = 0; i < num_qp; ++i) {
 431                 struct ibv_qp_attr attr = {
 432                         .qp_state        = IBV_QPS_INIT,
 433                         .pkey_index      = 0,
 434                         .port_num        = port,
 435                         .qp_access_flags = 0
 436                 };
 437
 438                 if (ibv_modify_qp(ctx->qp[i], &attr,
 439                                   IBV_QP_STATE              |
 440                                   IBV_QP_PKEY_INDEX         |
 441                                   IBV_QP_PORT               |
 442                                   IBV_QP_ACCESS_FLAGS)) {
 443                         fprintf(stderr, "Failed to modify QP[%d] to INIT\n", i);
 444                         return NULL;
 445                 }
 446         }
 447
 448         return ctx;
 449 }
 450
 451 int pp_close_ctx(struct pingpong_context *ctx, int num_qp)
 452 {
 453         int i;
 454
 455         for (i = 0; i < num_qp; ++i) {
 456                 if (ibv_destroy_qp(ctx->qp[i])) {
 457                         fprintf(stderr, "Couldn't destroy QP[%d]\n", i);
 458                         return 1;
 459                 }
 460         }
 461
 462         if (ibv_destroy_srq(ctx->srq)) {
 463                 fprintf(stderr, "Couldn't destroy SRQ\n");
 464                 return 1;
 465         }
 466
 467         if (ibv_destroy_cq(ctx->cq)) {
 468                 fprintf(stderr, "Couldn't destroy CQ\n");
 469                 return 1;
 470         }
 471
 472         if (ibv_dereg_mr(ctx->mr)) {
 473                 fprintf(stderr, "Couldn't deregister MR\n");
 474                 return 1;
 475         }
 476
 477         if (ibv_dealloc_pd(ctx->pd)) {
 478                 fprintf(stderr, "Couldn't deallocate PD\n");
 479                 return 1;
 480         }
 481
 482         if (ctx->channel) {
 483                 if (ibv_destroy_comp_channel(ctx->channel)) {
 484                         fprintf(stderr, "Couldn't destroy completion channel\n");
 485                         return 1;
 486                 }
 487         }
 488
 489         if (ibv_close_device(ctx->context)) {
 490                 fprintf(stderr, "Couldn't release context\n");
 491                 return 1;
 492         }
 493
 494         free(ctx->buf);
 495         free(ctx);
 496
 497         return 0;
 498 }
 499
 500 static int pp_post_recv(struct pingpong_context *ctx, int n)
 501 {
 502         struct ibv_sge list = {
 503                 .addr   = (uintptr_t) ctx->buf,
 504                 .length = ctx->size,
 505                 .lkey   = ctx->mr->lkey
 506         };
 507         struct ibv_recv_wr wr = {
 508                 .wr_id      = PINGPONG_RECV_WRID,
 509                 .sg_list    = &list,
 510                 .num_sge    = 1,
 511         };
 512         struct ibv_recv_wr *bad_wr;
 513         int i;
 514
 515         for (i = 0; i < n; ++i)
 516                 if (ibv_post_srq_recv(ctx->srq, &wr, &bad_wr))
 517                         break;
 518
 519         return i;
 520 }
 521
 522 static int pp_post_send(struct pingpong_context *ctx, int qp_index)
 523 {
 524         struct ibv_sge list = {
 525                 .addr   = (uintptr_t) ctx->buf,
 526                 .length = ctx->size,
 527                 .lkey   = ctx->mr->lkey
 528         };
 529         struct ibv_send_wr wr = {
 530                 .wr_id      = PINGPONG_SEND_WRID,
 531                 .sg_list    = &list,
 532                 .num_sge    = 1,
 533                 .opcode     = IBV_WR_SEND,
 534                 .send_flags = IBV_SEND_SIGNALED,
 535         };
 536         struct ibv_send_wr *bad_wr;
 537
 538         return ibv_post_send(ctx->qp[qp_index], &wr, &bad_wr);
 539 }
 540
 541 static int find_qp(int qpn, struct pingpong_context *ctx, int num_qp)
 542 {
 543         int i;
 544
 545         for (i = 0; i < num_qp; ++i)
 546                 if (ctx->qp[i]->qp_num == qpn)
 547                         return i;
 548
 549         return -1;
 550 }
 551
 552 static void usage(const char *argv0)
 553 {
 554         printf("Usage:\n");
 555         printf("  %s            start a server and wait for connection\n", argv0);
 556         printf("  %s <host>     connect to server at <host>\n", argv0);
 557         printf("\n");
 558         printf("Options:\n");
 559         printf("  -p, --port=<port>      listen on/connect to port <port> (default 18515)\n");
 560         printf("  -d, --ib-dev=<dev>     use IB device <dev> (default first device found)\n");
 561         printf("  -i, --ib-port=<port>   use port <port> of IB device (default 1)\n");
 562         printf("  -s, --size=<size>      size of message to exchange (default 4096)\n");
 563         printf("  -m, --mtu=<size>       path MTU (default 1024)\n");
 564         printf("  -q, --num-qp=<num>     number of QPs to use (default 16)\n");
 565         printf("  -r, --rx-depth=<dep>   number of receives to post at a time (default 500)\n");
 566         printf("  -n, --iters=<iters>    number of exchanges per QP(default 1000)\n");
 567         printf("  -l, --sl=<sl>          service level value\n");
 568         printf("  -e, --events           sleep on CQ events (default poll)\n");
 569         printf("  -g, --gid-idx=<gid index> local port gid index\n");
 570 }
 571
 572 int main(int argc, char *argv[])
 573 {
 574         struct ibv_device      **dev_list;
 575         struct ibv_device       *ib_dev;
 576         struct ibv_wc           *wc;
 577         struct pingpong_context *ctx;
 578         struct pingpong_dest     my_dest[MAX_QP];
 579         struct pingpong_dest    *rem_dest;
 580         struct timeval           start, end;
 581         char                    *ib_devname = NULL;
 582         char                    *servername = NULL;
 583         int                      port = 18515;
 584         int                      ib_port = 1;
 585         int                      size = 4096;
 586         enum ibv_mtu             mtu = IBV_MTU_1024;
 587         int                      num_qp = 16;
 588         int                      rx_depth = 500;
 589         int                      iters = 1000;
 590         int                      use_event = 0;
 591         int                      routs;
 592         int                      rcnt, scnt;
 593         int                      num_wc;
 594         int                      i;
 595         int                      num_cq_events = 0;
 596         int                      sl = 0;
 597         int                      gidx = -1;
 598         char                     gid[33];
 599
 600         srand48(getpid() * time(NULL));
 601
 602         while (1) {
 603                 int c;
 604
 605                 static struct option long_options[] = {
 606                         { .name = "port",     .has_arg = 1, .val = 'p' },
 607                         { .name = "ib-dev",   .has_arg = 1, .val = 'd' },
 608                         { .name = "ib-port",  .has_arg = 1, .val = 'i' },
 609                         { .name = "size",     .has_arg = 1, .val = 's' },
 610                         { .name = "mtu",      .has_arg = 1, .val = 'm' },
 611                         { .name = "num-qp",   .has_arg = 1, .val = 'q' },
 612                         { .name = "rx-depth", .has_arg = 1, .val = 'r' },
 613                         { .name = "iters",    .has_arg = 1, .val = 'n' },
 614                         { .name = "sl",       .has_arg = 1, .val = 'l' },
 615                         { .name = "events",   .has_arg = 0, .val = 'e' },
 616                         { .name = "gid-idx",  .has_arg = 1, .val = 'g' },
 617                         { 0 }
 618                 };
 619
 620                 c = getopt_long(argc, argv, "p:d:i:s:m:q:r:n:l:eg:", long_options, NULL);
 621                 if (c == -1)
 622                         break;
 623
 624                 switch (c) {
 625                 case 'p':
 626                         port = strtol(optarg, NULL, 0);
 627                         if (port < 0 || port > 65535) {
 628                                 usage(argv[0]);
 629                                 return 1;
 630                         }
 631                         break;
 632
 633                 case 'd':
 634                         ib_devname = strdup(optarg);
 635                         break;
 636
 637                 case 'i':
 638                         ib_port = strtol(optarg, NULL, 0);
 639                         if (ib_port < 0) {
 640                                 usage(argv[0]);
 641                                 return 1;
 642                         }
 643                         break;
 644
 645                 case 's':
 646                         size = strtol(optarg, NULL, 0);
 647                         break;
 648
 649                 case 'm':
 650                         mtu = pp_mtu_to_enum(strtol(optarg, NULL, 0));
 651                         if (mtu < 0) {
 652                                 usage(argv[0]);
 653                                 return 1;
 654                         }
 655                         break;
 656
 657                 case 'q':
 658                         num_qp = strtol(optarg, NULL, 0);
 659                         break;
 660
 661                 case 'r':
 662                         rx_depth = strtol(optarg, NULL, 0);
 663                         break;
 664
 665                 case 'n':
 666                         iters = strtol(optarg, NULL, 0);
 667                         break;
 668
 669                 case 'l':
 670                         sl = strtol(optarg, NULL, 0);
 671                         break;
 672
 673                 case 'e':
 674                         ++use_event;
 675                         break;
 676
 677                 case 'g':
 678                         gidx = strtol(optarg, NULL, 0);
 679                         break;
 680
 681                 default:
 682                         usage(argv[0]);
 683                         return 1;
 684                 }
 685         }
 686
 687         if (optind == argc - 1)
 688                 servername = strdup(argv[optind]);
 689         else if (optind < argc) {
 690                 usage(argv[0]);
 691                 return 1;
 692         }
 693
 694         if (num_qp > rx_depth) {
 695                 fprintf(stderr, "rx_depth %d is too small for %d QPs -- "
 696                         "must have at least one receive per QP.\n",
 697                         rx_depth, num_qp);
 698                 return 1;
 699         }
 700
 701         num_wc = num_qp + rx_depth;
 702         wc     = alloca(num_wc * sizeof *wc);
 703
 704         page_size = sysconf(_SC_PAGESIZE);
 705
 706         dev_list = ibv_get_device_list(NULL);
 707         if (!dev_list) {
 708                 perror("Failed to get IB devices list");
 709                 return 1;
 710         }
 711
 712         if (!ib_devname) {
 713                 ib_dev = *dev_list;
 714                 if (!ib_dev) {
 715                         fprintf(stderr, "No IB devices found\n");
 716                         return 1;
 717                 }
 718         } else {
 719                 int i;
 720                 for (i = 0; dev_list[i]; ++i)
 721                         if (!strcmp(ibv_get_device_name(dev_list[i]), ib_devname))
 722                                 break;
 723                 ib_dev = dev_list[i];
 724                 if (!ib_dev) {
 725                         fprintf(stderr, "IB device %s not found\n", ib_devname);
 726                         return 1;
 727                 }
 728         }
 729
 730         ctx = pp_init_ctx(ib_dev, size, num_qp, rx_depth, ib_port, use_event);
 731         if (!ctx)
 732                 return 1;
 733
 734         routs = pp_post_recv(ctx, ctx->rx_depth);
 735         if (routs < ctx->rx_depth) {
 736                 fprintf(stderr, "Couldn't post receive (%d)\n", routs);
 737                 return 1;
 738         }
 739
 740         if (use_event)
 741                 if (ibv_req_notify_cq(ctx->cq, 0)) {
 742                         fprintf(stderr, "Couldn't request CQ notification\n");
 743                         return 1;
 744                 }
 745
 746         memset(my_dest, 0, sizeof my_dest);
 747
 748         if (pp_get_port_info(ctx->context, ib_port, &ctx->portinfo)) {
 749                 fprintf(stderr, "Couldn't get port info\n");
 750                 return 1;
 751         }
 752         for (i = 0; i < num_qp; ++i) {
 753                 my_dest[i].qpn = ctx->qp[i]->qp_num;
 754                 my_dest[i].psn = lrand48() & 0xffffff;
 755                 my_dest[i].lid = ctx->portinfo.lid;
 756                 if (ctx->portinfo.link_layer == IBV_LINK_LAYER_INFINIBAND && !my_dest[i].lid) {
 757                         fprintf(stderr, "Couldn't get local LID\n");
 758                         return 1;
 759                 }
 760
 761                 if (gidx >= 0) {
 762                         if (ibv_query_gid(ctx->context, ib_port, gidx, &my_dest[i].gid)) {
 763                                 fprintf(stderr, "Could not get local gid for gid index %d\n", gidx);
 764                                 return 1;
 765                         }
 766                 } else
 767                         memset(&my_dest[i].gid, 0, sizeof my_dest[i].gid);
 768
 769                 inet_ntop(AF_INET6, &my_dest[i].gid, gid, sizeof gid);
 770                 printf("  local address:  LID 0x%04x, QPN 0x%06x, PSN 0x%06x, GID %s\n",
 771                        my_dest[i].lid, my_dest[i].qpn, my_dest[i].psn, gid);
 772         }
 773
 774         if (servername)
 775                 rem_dest = pp_client_exch_dest(servername, port, my_dest);
 776         else
 777                 rem_dest = pp_server_exch_dest(ctx, ib_port, mtu, port, sl, my_dest, gidx);
 778
 779         if (!rem_dest)
 780                 return 1;
 781
 782         inet_ntop(AF_INET6, &rem_dest->gid, gid, sizeof gid);
 783
 784         for (i = 0; i < num_qp; ++i) {
 785                 inet_ntop(AF_INET6, &rem_dest[i].gid, gid, sizeof gid);
 786                 printf("  remote address: LID 0x%04x, QPN 0x%06x, PSN 0x%06x, GID %s\n",
 787                        rem_dest[i].lid, rem_dest[i].qpn, rem_dest[i].psn, gid);
 788         }
 789
 790         if (servername)
 791                 if (pp_connect_ctx(ctx, ib_port, mtu, sl, my_dest, rem_dest, gidx))
 792                         return 1;
 793
 794         if (servername)
 795                 for (i = 0; i < num_qp; ++i) {
 796                         if (pp_post_send(ctx, i)) {
 797                                 fprintf(stderr, "Couldn't post send\n");
 798                                 return 1;
 799                         }
 800                         ctx->pending[i] = PINGPONG_SEND_WRID | PINGPONG_RECV_WRID;
 801                 }
 802         else
 803                 for (i = 0; i < num_qp; ++i)
 804                         ctx->pending[i] = PINGPONG_RECV_WRID;
 805
 806         if (gettimeofday(&start, NULL)) {
 807                 perror("gettimeofday");
 808                 return 1;
 809         }
 810
 811         rcnt = scnt = 0;
 812         while (rcnt < iters || scnt < iters) {
 813                 if (use_event) {
 814                         struct ibv_cq *ev_cq;
 815                         void          *ev_ctx;
 816
 817                         if (ibv_get_cq_event(ctx->channel, &ev_cq, &ev_ctx)) {
 818                                 fprintf(stderr, "Failed to get cq_event\n");
 819                                 return 1;
 820                         }
 821
 822                         ++num_cq_events;
 823
 824                         if (ev_cq != ctx->cq) {
 825                                 fprintf(stderr, "CQ event for unknown CQ %p\n", ev_cq);
 826                                 return 1;
 827                         }
 828
 829                         if (ibv_req_notify_cq(ctx->cq, 0)) {
 830                                 fprintf(stderr, "Couldn't request CQ notification\n");
 831                                 return 1;
 832                         }
 833                 }
 834
 835                 {
 836                         int ne, qp_ind;
 837
 838                         do {
 839                                 ne = ibv_poll_cq(ctx->cq, num_wc, wc);
 840                                 if (ne < 0) {
 841                                         fprintf(stderr, "poll CQ failed %d\n", ne);
 842                                         return 1;
 843                                 }
 844                         } while (!use_event && ne < 1);
 845
 846                         for (i = 0; i < ne; ++i) {
 847                                 if (wc[i].status != IBV_WC_SUCCESS) {
 848                                         fprintf(stderr, "Failed status %s (%d) for wr_id %d\n",
 849                                                 ibv_wc_status_str(wc[i].status),
 850                                                 wc[i].status, (int) wc[i].wr_id);
 851                                         return 1;
 852                                 }
 853
 854                                 qp_ind = find_qp(wc[i].qp_num, ctx, num_qp);
 855                                 if (qp_ind < 0) {
 856                                         fprintf(stderr, "Couldn't find QPN %06x\n",
 857                                                 wc[i].qp_num);
 858                                         return 1;
 859                                 }
 860
 861                                 switch ((int) wc[i].wr_id) {
 862                                 case PINGPONG_SEND_WRID:
 863                                         ++scnt;
 864                                         break;
 865
 866                                 case PINGPONG_RECV_WRID:
 867                                         if (--routs <= num_qp) {
 868                                                 routs += pp_post_recv(ctx, ctx->rx_depth - routs);
 869                                                 if (routs < ctx->rx_depth) {
 870                                                         fprintf(stderr,
 871                                                                 "Couldn't post receive (%d)\n",
 872                                                                 routs);
 873                                                         return 1;
 874                                                 }
 875                                         }
 876
 877                                         ++rcnt;
 878                                         break;
 879
 880                                 default:
 881                                         fprintf(stderr, "Completion for unknown wr_id %d\n",
 882                                                 (int) wc[i].wr_id);
 883                                         return 1;
 884                                 }
 885
 886                                 ctx->pending[qp_ind] &= ~(int) wc[i].wr_id;
 887                                 if (scnt < iters && !ctx->pending[qp_ind]) {
 888                                         if (pp_post_send(ctx, qp_ind)) {
 889                                                 fprintf(stderr, "Couldn't post send\n");
 890                                                 return 1;
 891                                         }
 892                                         ctx->pending[qp_ind] = PINGPONG_RECV_WRID |
 893                                                                PINGPONG_SEND_WRID;
 894                                 }
 895
 896                         }
 897                 }
 898         }
 899
 900         if (gettimeofday(&end, NULL)) {
 901                 perror("gettimeofday");
 902                 return 1;
 903         }
 904
 905         {
 906                 float usec = (end.tv_sec - start.tv_sec) * 1000000 +
 907                         (end.tv_usec - start.tv_usec);
 908                 long long bytes = (long long) size * iters * 2;
 909
 910                 printf("%lld bytes in %.2f seconds = %.2f Mbit/sec\n",
 911                        bytes, usec / 1000000., bytes * 8. / usec);
 912                 printf("%d iters in %.2f seconds = %.2f usec/iter\n",
 913                        iters, usec / 1000000., usec / iters);
 914         }
 915
 916         ibv_ack_cq_events(ctx->cq, num_cq_events);
 917
 918         if (pp_close_ctx(ctx, num_qp))
 919                 return 1;
 920
 921         ibv_free_device_list(dev_list);
 922         free(rem_dest);
 923
 924         return 0;
 925 }