contrib/ofed/libibverbs/examples/ud_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 #define _GNU_SOURCE
  33 #include <config.h>
  34
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38 #include <string.h>
  39 #include <sys/types.h>
  40 #include <sys/socket.h>
  41 #include <sys/time.h>
  42 #include <netdb.h>
  43 #include <stdlib.h>
  44 #include <getopt.h>
  45 #include <arpa/inet.h>
  46 #include <time.h>
  47
  48 #include "pingpong.h"
  49
  50 enum {
  51         PINGPONG_RECV_WRID = 1,
  52         PINGPONG_SEND_WRID = 2,
  53 };
  54
  55 static int page_size;
  56
  57 struct pingpong_context {
  58         struct ibv_context      *context;
  59         struct ibv_comp_channel *channel;
  60         struct ibv_pd           *pd;
  61         struct ibv_mr           *mr;
  62         struct ibv_cq           *cq;
  63         struct ibv_qp           *qp;
  64         struct ibv_ah           *ah;
  65         void                    *buf;
  66         int                      size;
  67         int                      send_flags;
  68         int                      rx_depth;
  69         int                      pending;
  70         struct ibv_port_attr     portinfo;
  71 };
  72
  73 struct pingpong_dest {
  74         int lid;
  75         int qpn;
  76         int psn;
  77         union ibv_gid gid;
  78 };
  79
  80 static int pp_connect_ctx(struct pingpong_context *ctx, int port, int my_psn,
  81                           int sl, struct pingpong_dest *dest, int sgid_idx)
  82 {
  83         struct ibv_ah_attr ah_attr = {
  84                 .is_global     = 0,
  85                 .dlid          = dest->lid,
  86                 .sl            = sl,
  87                 .src_path_bits = 0,
  88                 .port_num      = port
  89         };
  90         struct ibv_qp_attr attr = {
  91                 .qp_state               = IBV_QPS_RTR
  92         };
  93
  94         if (ibv_modify_qp(ctx->qp, &attr, IBV_QP_STATE)) {
  95                 fprintf(stderr, "Failed to modify QP to RTR\n");
  96                 return 1;
  97         }
  98
  99         attr.qp_state       = IBV_QPS_RTS;
 100         attr.sq_psn         = my_psn;
 101
 102         if (ibv_modify_qp(ctx->qp, &attr,
 103                           IBV_QP_STATE              |
 104                           IBV_QP_SQ_PSN)) {
 105                 fprintf(stderr, "Failed to modify QP to RTS\n");
 106                 return 1;
 107         }
 108
 109         if (dest->gid.global.interface_id) {
 110                 ah_attr.is_global = 1;
 111                 ah_attr.grh.hop_limit = 1;
 112                 ah_attr.grh.dgid = dest->gid;
 113                 ah_attr.grh.sgid_index = sgid_idx;
 114         }
 115
 116         ctx->ah = ibv_create_ah(ctx->pd, &ah_attr);
 117         if (!ctx->ah) {
 118                 fprintf(stderr, "Failed to create AH\n");
 119                 return 1;
 120         }
 121
 122         return 0;
 123 }
 124
 125 static struct pingpong_dest *pp_client_exch_dest(const char *servername, int port,
 126                                                  const struct pingpong_dest *my_dest)
 127 {
 128         struct addrinfo *res, *t;
 129         struct addrinfo hints = {
 130                 .ai_family   = AF_UNSPEC,
 131                 .ai_socktype = SOCK_STREAM
 132         };
 133         char *service;
 134         char msg[sizeof "0000:000000:000000:00000000000000000000000000000000"];
 135         int n;
 136         int sockfd = -1;
 137         struct pingpong_dest *rem_dest = NULL;
 138         char gid[33];
 139
 140         if (asprintf(&service, "%d", port) < 0)
 141                 return NULL;
 142
 143         n = getaddrinfo(servername, service, &hints, &res);
 144
 145         if (n < 0) {
 146                 fprintf(stderr, "%s for %s:%d\n", gai_strerror(n), servername, port);
 147                 free(service);
 148                 return NULL;
 149         }
 150
 151         for (t = res; t; t = t->ai_next) {
 152                 sockfd = socket(t->ai_family, t->ai_socktype, t->ai_protocol);
 153                 if (sockfd >= 0) {
 154                         if (!connect(sockfd, t->ai_addr, t->ai_addrlen))
 155                                 break;
 156                         close(sockfd);
 157                         sockfd = -1;
 158                 }
 159         }
 160
 161         freeaddrinfo_null(res);
 162         free(service);
 163
 164         if (sockfd < 0) {
 165                 fprintf(stderr, "Couldn't connect to %s:%d\n", servername, port);
 166                 return NULL;
 167         }
 168
 169         gid_to_wire_gid(&my_dest->gid, gid);
 170         sprintf(msg, "%04x:%06x:%06x:%s", my_dest->lid, my_dest->qpn,
 171                                                         my_dest->psn, gid);
 172         if (write(sockfd, msg, sizeof msg) != sizeof msg) {
 173                 fprintf(stderr, "Couldn't send local address\n");
 174                 goto out;
 175         }
 176
 177         if (read(sockfd, msg, sizeof msg) != sizeof msg ||
 178             write(sockfd, "done", sizeof "done") != sizeof "done") {
 179                 perror("client read/write");
 180                 fprintf(stderr, "Couldn't read/write remote address\n");
 181                 goto out;
 182         }
 183
 184         rem_dest = malloc(sizeof *rem_dest);
 185         if (!rem_dest)
 186                 goto out;
 187
 188         sscanf(msg, "%x:%x:%x:%s", &rem_dest->lid, &rem_dest->qpn,
 189                                                         &rem_dest->psn, gid);
 190         wire_gid_to_gid(gid, &rem_dest->gid);
 191
 192 out:
 193         close(sockfd);
 194         return rem_dest;
 195 }
 196
 197 static struct pingpong_dest *pp_server_exch_dest(struct pingpong_context *ctx,
 198                                                  int ib_port, int port, int sl,
 199                                                  const struct pingpong_dest *my_dest,
 200                                                  int sgid_idx)
 201 {
 202         struct addrinfo *res, *t;
 203         struct addrinfo hints = {
 204                 .ai_flags    = AI_PASSIVE,
 205                 .ai_family   = AF_INET,
 206                 .ai_socktype = SOCK_STREAM
 207         };
 208         char *service;
 209         char msg[sizeof "0000:000000:000000:00000000000000000000000000000000"];
 210         int n;
 211         int sockfd = -1, connfd;
 212         struct pingpong_dest *rem_dest = NULL;
 213         char gid[33];
 214
 215         if (asprintf(&service, "%d", port) < 0)
 216                 return NULL;
 217
 218         n = getaddrinfo(NULL, service, &hints, &res);
 219
 220         if (n < 0) {
 221                 fprintf(stderr, "%s for port %d\n", gai_strerror(n), port);
 222                 free(service);
 223                 return NULL;
 224         }
 225
 226         for (t = res; t; t = t->ai_next) {
 227                 sockfd = socket(t->ai_family, t->ai_socktype, t->ai_protocol);
 228                 if (sockfd >= 0) {
 229                         n = 1;
 230
 231                         setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n);
 232
 233                         if (!bind(sockfd, t->ai_addr, t->ai_addrlen))
 234                                 break;
 235                         close(sockfd);
 236                         sockfd = -1;
 237                 }
 238         }
 239
 240         freeaddrinfo_null(res);
 241         free(service);
 242
 243         if (sockfd < 0) {
 244                 fprintf(stderr, "Couldn't listen to port %d\n", port);
 245                 return NULL;
 246         }
 247
 248         if (listen(sockfd, 1) < 0) {
 249                 perror("listen() failed");
 250                 close(sockfd);
 251                 return NULL;
 252         }
 253         connfd = accept(sockfd, NULL, NULL);
 254         close(sockfd);
 255         if (connfd < 0) {
 256                 fprintf(stderr, "accept() failed\n");
 257                 return NULL;
 258         }
 259
 260         n = read(connfd, msg, sizeof msg);
 261         if (n != sizeof msg) {
 262                 perror("server read");
 263                 fprintf(stderr, "%d/%d: Couldn't read remote address\n", n, (int) sizeof msg);
 264                 goto out;
 265         }
 266
 267         rem_dest = malloc(sizeof *rem_dest);
 268         if (!rem_dest)
 269                 goto out;
 270
 271         sscanf(msg, "%x:%x:%x:%s", &rem_dest->lid, &rem_dest->qpn,
 272                                                         &rem_dest->psn, gid);
 273         wire_gid_to_gid(gid, &rem_dest->gid);
 274
 275         if (pp_connect_ctx(ctx, ib_port, my_dest->psn, sl, rem_dest,
 276                                                                 sgid_idx)) {
 277                 fprintf(stderr, "Couldn't connect to remote QP\n");
 278                 free(rem_dest);
 279                 rem_dest = NULL;
 280                 goto out;
 281         }
 282
 283         gid_to_wire_gid(&my_dest->gid, gid);
 284         sprintf(msg, "%04x:%06x:%06x:%s", my_dest->lid, my_dest->qpn,
 285                                                         my_dest->psn, gid);
 286         if (write(connfd, msg, sizeof msg) != sizeof msg ||
 287             read(connfd, msg, sizeof msg) != sizeof "done") {
 288                 fprintf(stderr, "Couldn't send/recv local address\n");
 289                 free(rem_dest);
 290                 rem_dest = NULL;
 291                 goto out;
 292         }
 293 out:
 294         close(connfd);
 295         return rem_dest;
 296 }
 297
 298 static struct pingpong_context *pp_init_ctx(struct ibv_device *ib_dev, int size,
 299                                             int rx_depth, int port,
 300                                             int use_event)
 301 {
 302         struct pingpong_context *ctx;
 303
 304         ctx = malloc(sizeof *ctx);
 305         if (!ctx)
 306                 return NULL;
 307
 308         ctx->size       = size;
 309         ctx->send_flags = IBV_SEND_SIGNALED;
 310         ctx->rx_depth   = rx_depth;
 311
 312         ctx->buf = memalign(page_size, size + 40);
 313         if (!ctx->buf) {
 314                 fprintf(stderr, "Couldn't allocate work buf.\n");
 315                 goto clean_ctx;
 316         }
 317
 318         /* FIXME memset(ctx->buf, 0, size + 40); */
 319         memset(ctx->buf, 0x7b, size + 40);
 320
 321         ctx->context = ibv_open_device(ib_dev);
 322         if (!ctx->context) {
 323                 fprintf(stderr, "Couldn't get context for %s\n",
 324                         ibv_get_device_name(ib_dev));
 325                 goto clean_buffer;
 326         }
 327
 328         {
 329                 struct ibv_port_attr port_info = {};
 330                 int mtu;
 331
 332                 if (ibv_query_port(ctx->context, port, &port_info)) {
 333                         fprintf(stderr, "Unable to query port info for port %d\n", port);
 334                         goto clean_device;
 335                 }
 336                 mtu = 1 << (port_info.active_mtu + 7);
 337                 if (size > mtu) {
 338                         fprintf(stderr, "Requested size larger than port MTU (%d)\n", mtu);
 339                         goto clean_device;
 340                 }
 341         }
 342
 343         if (use_event) {
 344                 ctx->channel = ibv_create_comp_channel(ctx->context);
 345                 if (!ctx->channel) {
 346                         fprintf(stderr, "Couldn't create completion channel\n");
 347                         goto clean_device;
 348                 }
 349         } else
 350                 ctx->channel = NULL;
 351
 352         ctx->pd = ibv_alloc_pd(ctx->context);
 353         if (!ctx->pd) {
 354                 fprintf(stderr, "Couldn't allocate PD\n");
 355                 goto clean_comp_channel;
 356         }
 357
 358         ctx->mr = ibv_reg_mr(ctx->pd, ctx->buf, size + 40, IBV_ACCESS_LOCAL_WRITE);
 359         if (!ctx->mr) {
 360                 fprintf(stderr, "Couldn't register MR\n");
 361                 goto clean_pd;
 362         }
 363
 364         ctx->cq = ibv_create_cq(ctx->context, rx_depth + 1, NULL,
 365                                 ctx->channel, 0);
 366         if (!ctx->cq) {
 367                 fprintf(stderr, "Couldn't create CQ\n");
 368                 goto clean_mr;
 369         }
 370
 371         {
 372                 struct ibv_qp_attr attr;
 373                 struct ibv_qp_init_attr init_attr = {
 374                         .send_cq = ctx->cq,
 375                         .recv_cq = ctx->cq,
 376                         .cap     = {
 377                                 .max_send_wr  = 1,
 378                                 .max_recv_wr  = rx_depth,
 379                                 .max_send_sge = 1,
 380                                 .max_recv_sge = 1
 381                         },
 382                         .qp_type = IBV_QPT_UD,
 383                 };
 384
 385                 ctx->qp = ibv_create_qp(ctx->pd, &init_attr);
 386                 if (!ctx->qp)  {
 387                         fprintf(stderr, "Couldn't create QP\n");
 388                         goto clean_cq;
 389                 }
 390
 391                 ibv_query_qp(ctx->qp, &attr, IBV_QP_CAP, &init_attr);
 392                 if (init_attr.cap.max_inline_data >= size) {
 393                         ctx->send_flags |= IBV_SEND_INLINE;
 394                 }
 395         }
 396
 397         {
 398                 struct ibv_qp_attr attr = {
 399                         .qp_state        = IBV_QPS_INIT,
 400                         .pkey_index      = 0,
 401                         .port_num        = port,
 402                         .qkey            = 0x11111111
 403                 };
 404
 405                 if (ibv_modify_qp(ctx->qp, &attr,
 406                                   IBV_QP_STATE              |
 407                                   IBV_QP_PKEY_INDEX         |
 408                                   IBV_QP_PORT               |
 409                                   IBV_QP_QKEY)) {
 410                         fprintf(stderr, "Failed to modify QP to INIT\n");
 411                         goto clean_qp;
 412                 }
 413         }
 414
 415         return ctx;
 416
 417 clean_qp:
 418         ibv_destroy_qp(ctx->qp);
 419
 420 clean_cq:
 421         ibv_destroy_cq(ctx->cq);
 422
 423 clean_mr:
 424         ibv_dereg_mr(ctx->mr);
 425
 426 clean_pd:
 427         ibv_dealloc_pd(ctx->pd);
 428
 429 clean_comp_channel:
 430         if (ctx->channel)
 431                 ibv_destroy_comp_channel(ctx->channel);
 432
 433 clean_device:
 434         ibv_close_device(ctx->context);
 435
 436 clean_buffer:
 437         free(ctx->buf);
 438
 439 clean_ctx:
 440         free(ctx);
 441
 442         return NULL;
 443 }
 444
 445 static int pp_close_ctx(struct pingpong_context *ctx)
 446 {
 447         if (ibv_destroy_qp(ctx->qp)) {
 448                 fprintf(stderr, "Couldn't destroy QP\n");
 449                 return 1;
 450         }
 451
 452         if (ibv_destroy_cq(ctx->cq)) {
 453                 fprintf(stderr, "Couldn't destroy CQ\n");
 454                 return 1;
 455         }
 456
 457         if (ibv_dereg_mr(ctx->mr)) {
 458                 fprintf(stderr, "Couldn't deregister MR\n");
 459                 return 1;
 460         }
 461
 462         if (ibv_destroy_ah(ctx->ah)) {
 463                 fprintf(stderr, "Couldn't destroy AH\n");
 464                 return 1;
 465         }
 466
 467         if (ibv_dealloc_pd(ctx->pd)) {
 468                 fprintf(stderr, "Couldn't deallocate PD\n");
 469                 return 1;
 470         }
 471
 472         if (ctx->channel) {
 473                 if (ibv_destroy_comp_channel(ctx->channel)) {
 474                         fprintf(stderr, "Couldn't destroy completion channel\n");
 475                         return 1;
 476                 }
 477         }
 478
 479         if (ibv_close_device(ctx->context)) {
 480                 fprintf(stderr, "Couldn't release context\n");
 481                 return 1;
 482         }
 483
 484         free(ctx->buf);
 485         free(ctx);
 486
 487         return 0;
 488 }
 489
 490 static int pp_post_recv(struct pingpong_context *ctx, int n)
 491 {
 492         struct ibv_sge list = {
 493                 .addr   = (uintptr_t) ctx->buf,
 494                 .length = ctx->size + 40,
 495                 .lkey   = ctx->mr->lkey
 496         };
 497         struct ibv_recv_wr wr = {
 498                 .wr_id      = PINGPONG_RECV_WRID,
 499                 .sg_list    = &list,
 500                 .num_sge    = 1,
 501         };
 502         struct ibv_recv_wr *bad_wr;
 503         int i;
 504
 505         for (i = 0; i < n; ++i)
 506                 if (ibv_post_recv(ctx->qp, &wr, &bad_wr))
 507                         break;
 508
 509         return i;
 510 }
 511
 512 static int pp_post_send(struct pingpong_context *ctx, uint32_t qpn)
 513 {
 514         struct ibv_sge list = {
 515                 .addr   = (uintptr_t) ctx->buf + 40,
 516                 .length = ctx->size,
 517                 .lkey   = ctx->mr->lkey
 518         };
 519         struct ibv_send_wr wr = {
 520                 .wr_id      = PINGPONG_SEND_WRID,
 521                 .sg_list    = &list,
 522                 .num_sge    = 1,
 523                 .opcode     = IBV_WR_SEND,
 524                 .send_flags = ctx->send_flags,
 525                 .wr         = {
 526                         .ud = {
 527                                  .ah          = ctx->ah,
 528                                  .remote_qpn  = qpn,
 529                                  .remote_qkey = 0x11111111
 530                          }
 531                 }
 532         };
 533         struct ibv_send_wr *bad_wr;
 534
 535         return ibv_post_send(ctx->qp, &wr, &bad_wr);
 536 }
 537
 538 static void usage(const char *argv0)
 539 {
 540         printf("Usage:\n");
 541         printf("  %s            start a server and wait for connection\n", argv0);
 542         printf("  %s <host>     connect to server at <host>\n", argv0);
 543         printf("\n");
 544         printf("Options:\n");
 545         printf("  -p, --port=<port>      listen on/connect to port <port> (default 18515)\n");
 546         printf("  -d, --ib-dev=<dev>     use IB device <dev> (default first device found)\n");
 547         printf("  -i, --ib-port=<port>   use port <port> of IB device (default 1)\n");
 548         printf("  -s, --size=<size>      size of message to exchange (default 2048)\n");
 549         printf("  -r, --rx-depth=<dep>   number of receives to post at a time (default 500)\n");
 550         printf("  -n, --iters=<iters>    number of exchanges (default 1000)\n");
 551         printf("  -l, --sl=<SL>          send messages with service level <SL> (default 0)\n");
 552         printf("  -e, --events           sleep on CQ events (default poll)\n");
 553         printf("  -g, --gid-idx=<gid index> local port gid index\n");
 554 }
 555
 556 int main(int argc, char *argv[])
 557 {
 558         struct ibv_device      **dev_list;
 559         struct ibv_device       *ib_dev;
 560         struct pingpong_context *ctx;
 561         struct pingpong_dest     my_dest;
 562         struct pingpong_dest    *rem_dest;
 563         struct timeval           start, end;
 564         char                    *ib_devname = NULL;
 565         char                    *servername = NULL;
 566         unsigned int             port = 18515;
 567         int                      ib_port = 1;
 568         unsigned int             size = 2048;
 569         unsigned int             rx_depth = 500;
 570         unsigned int             iters = 1000;
 571         int                      use_event = 0;
 572         int                      routs;
 573         int                      rcnt, scnt;
 574         int                      num_cq_events = 0;
 575         int                      sl = 0;
 576         int                      gidx = -1;
 577         char                     gid[33];
 578
 579         srand48(getpid() * time(NULL));
 580
 581         while (1) {
 582                 int c;
 583
 584                 static struct option long_options[] = {
 585                         { .name = "port",     .has_arg = 1, .val = 'p' },
 586                         { .name = "ib-dev",   .has_arg = 1, .val = 'd' },
 587                         { .name = "ib-port",  .has_arg = 1, .val = 'i' },
 588                         { .name = "size",     .has_arg = 1, .val = 's' },
 589                         { .name = "rx-depth", .has_arg = 1, .val = 'r' },
 590                         { .name = "iters",    .has_arg = 1, .val = 'n' },
 591                         { .name = "sl",       .has_arg = 1, .val = 'l' },
 592                         { .name = "events",   .has_arg = 0, .val = 'e' },
 593                         { .name = "gid-idx",  .has_arg = 1, .val = 'g' },
 594                         {}
 595                 };
 596
 597                 c = getopt_long(argc, argv, "p:d:i:s:r:n:l:eg:",
 598                                                         long_options, NULL);
 599                 if (c == -1)
 600                         break;
 601
 602                 switch (c) {
 603                 case 'p':
 604                         port = strtol(optarg, NULL, 0);
 605                         if (port > 65535) {
 606                                 usage(argv[0]);
 607                                 return 1;
 608                         }
 609                         break;
 610
 611                 case 'd':
 612                         ib_devname = strdupa(optarg);
 613                         break;
 614
 615                 case 'i':
 616                         ib_port = strtol(optarg, NULL, 0);
 617                         if (ib_port < 1) {
 618                                 usage(argv[0]);
 619                                 return 1;
 620                         }
 621                         break;
 622
 623                 case 's':
 624                         size = strtoul(optarg, NULL, 0);
 625                         break;
 626
 627                 case 'r':
 628                         rx_depth = strtoul(optarg, NULL, 0);
 629                         break;
 630
 631                 case 'n':
 632                         iters = strtoul(optarg, NULL, 0);
 633                         break;
 634
 635                 case 'l':
 636                         sl = strtol(optarg, NULL, 0);
 637                         break;
 638
 639                 case 'e':
 640                         ++use_event;
 641                         break;
 642
 643                 case 'g':
 644                         gidx = strtol(optarg, NULL, 0);
 645                         break;
 646
 647                 default:
 648                         usage(argv[0]);
 649                         return 1;
 650                 }
 651         }
 652
 653         if (optind == argc - 1)
 654                 servername = strdupa(argv[optind]);
 655         else if (optind < argc) {
 656                 usage(argv[0]);
 657                 return 1;
 658         }
 659
 660         page_size = sysconf(_SC_PAGESIZE);
 661
 662         dev_list = ibv_get_device_list(NULL);
 663         if (!dev_list) {
 664                 perror("Failed to get IB devices list");
 665                 return 1;
 666         }
 667
 668         if (!ib_devname) {
 669                 ib_dev = *dev_list;
 670                 if (!ib_dev) {
 671                         fprintf(stderr, "No IB devices found\n");
 672                         return 1;
 673                 }
 674         } else {
 675                 int i;
 676                 for (i = 0; dev_list[i]; ++i)
 677                         if (!strcmp(ibv_get_device_name(dev_list[i]), ib_devname))
 678                                 break;
 679                 ib_dev = dev_list[i];
 680                 if (!ib_dev) {
 681                         fprintf(stderr, "IB device %s not found\n", ib_devname);
 682                         return 1;
 683                 }
 684         }
 685
 686         ctx = pp_init_ctx(ib_dev, size, rx_depth, ib_port, use_event);
 687         if (!ctx)
 688                 return 1;
 689
 690         routs = pp_post_recv(ctx, ctx->rx_depth);
 691         if (routs < ctx->rx_depth) {
 692                 fprintf(stderr, "Couldn't post receive (%d)\n", routs);
 693                 return 1;
 694         }
 695
 696         if (use_event)
 697                 if (ibv_req_notify_cq(ctx->cq, 0)) {
 698                         fprintf(stderr, "Couldn't request CQ notification\n");
 699                         return 1;
 700                 }
 701
 702         if (pp_get_port_info(ctx->context, ib_port, &ctx->portinfo)) {
 703                 fprintf(stderr, "Couldn't get port info\n");
 704                 return 1;
 705         }
 706         my_dest.lid = ctx->portinfo.lid;
 707
 708         my_dest.qpn = ctx->qp->qp_num;
 709         my_dest.psn = lrand48() & 0xffffff;
 710
 711         if (gidx >= 0) {
 712                 if (ibv_query_gid(ctx->context, ib_port, gidx, &my_dest.gid)) {
 713                         fprintf(stderr, "Could not get local gid for gid index "
 714                                                                 "%d\n", gidx);
 715                         return 1;
 716                 }
 717         } else
 718                 memset(&my_dest.gid, 0, sizeof my_dest.gid);
 719
 720         inet_ntop(AF_INET6, &my_dest.gid, gid, sizeof gid);
 721         printf("  local address:  LID 0x%04x, QPN 0x%06x, PSN 0x%06x: GID %s\n",
 722                my_dest.lid, my_dest.qpn, my_dest.psn, gid);
 723
 724         if (servername)
 725                 rem_dest = pp_client_exch_dest(servername, port, &my_dest);
 726         else
 727                 rem_dest = pp_server_exch_dest(ctx, ib_port, port, sl,
 728                                                         &my_dest, gidx);
 729
 730         if (!rem_dest)
 731                 return 1;
 732
 733         inet_ntop(AF_INET6, &rem_dest->gid, gid, sizeof gid);
 734         printf("  remote address: LID 0x%04x, QPN 0x%06x, PSN 0x%06x, GID %s\n",
 735                rem_dest->lid, rem_dest->qpn, rem_dest->psn, gid);
 736
 737         if (servername)
 738                 if (pp_connect_ctx(ctx, ib_port, my_dest.psn, sl, rem_dest,
 739                                                                         gidx))
 740                         return 1;
 741
 742         ctx->pending = PINGPONG_RECV_WRID;
 743
 744         if (servername) {
 745                 if (pp_post_send(ctx, rem_dest->qpn)) {
 746                         fprintf(stderr, "Couldn't post send\n");
 747                         return 1;
 748                 }
 749                 ctx->pending |= PINGPONG_SEND_WRID;
 750         }
 751
 752         if (gettimeofday(&start, NULL)) {
 753                 perror("gettimeofday");
 754                 return 1;
 755         }
 756
 757         rcnt = scnt = 0;
 758         while (rcnt < iters || scnt < iters) {
 759                 if (use_event) {
 760                         struct ibv_cq *ev_cq;
 761                         void          *ev_ctx;
 762
 763                         if (ibv_get_cq_event(ctx->channel, &ev_cq, &ev_ctx)) {
 764                                 fprintf(stderr, "Failed to get cq_event\n");
 765                                 return 1;
 766                         }
 767
 768                         ++num_cq_events;
 769
 770                         if (ev_cq != ctx->cq) {
 771                                 fprintf(stderr, "CQ event for unknown CQ %p\n", ev_cq);
 772                                 return 1;
 773                         }
 774
 775                         if (ibv_req_notify_cq(ctx->cq, 0)) {
 776                                 fprintf(stderr, "Couldn't request CQ notification\n");
 777                                 return 1;
 778                         }
 779                 }
 780
 781                 {
 782                         struct ibv_wc wc[2];
 783                         int ne, i;
 784
 785                         do {
 786                                 ne = ibv_poll_cq(ctx->cq, 2, wc);
 787                                 if (ne < 0) {
 788                                         fprintf(stderr, "poll CQ failed %d\n", ne);
 789                                         return 1;
 790                                 }
 791                         } while (!use_event && ne < 1);
 792
 793                         for (i = 0; i < ne; ++i) {
 794                                 if (wc[i].status != IBV_WC_SUCCESS) {
 795                                         fprintf(stderr, "Failed status %s (%d) for wr_id %d\n",
 796                                                 ibv_wc_status_str(wc[i].status),
 797                                                 wc[i].status, (int) wc[i].wr_id);
 798                                         return 1;
 799                                 }
 800
 801                                 switch ((int) wc[i].wr_id) {
 802                                 case PINGPONG_SEND_WRID:
 803                                         ++scnt;
 804                                         break;
 805
 806                                 case PINGPONG_RECV_WRID:
 807                                         if (--routs <= 1) {
 808                                                 routs += pp_post_recv(ctx, ctx->rx_depth - routs);
 809                                                 if (routs < ctx->rx_depth) {
 810                                                         fprintf(stderr,
 811                                                                 "Couldn't post receive (%d)\n",
 812                                                                 routs);
 813                                                         return 1;
 814                                                 }
 815                                         }
 816
 817                                         ++rcnt;
 818                                         break;
 819
 820                                 default:
 821                                         fprintf(stderr, "Completion for unknown wr_id %d\n",
 822                                                 (int) wc[i].wr_id);
 823                                         return 1;
 824                                 }
 825
 826                                 ctx->pending &= ~(int) wc[i].wr_id;
 827                                 if (scnt < iters && !ctx->pending) {
 828                                         if (pp_post_send(ctx, rem_dest->qpn)) {
 829                                                 fprintf(stderr, "Couldn't post send\n");
 830                                                 return 1;
 831                                         }
 832                                         ctx->pending = PINGPONG_RECV_WRID |
 833                                                        PINGPONG_SEND_WRID;
 834                                 }
 835                         }
 836                 }
 837         }
 838
 839         if (gettimeofday(&end, NULL)) {
 840                 perror("gettimeofday");
 841                 return 1;
 842         }
 843
 844         {
 845                 float usec = (end.tv_sec - start.tv_sec) * 1000000 +
 846                         (end.tv_usec - start.tv_usec);
 847                 long long bytes = (long long) size * iters * 2;
 848
 849                 printf("%lld bytes in %.2f seconds = %.2f Mbit/sec\n",
 850                        bytes, usec / 1000000., bytes * 8. / usec);
 851                 printf("%d iters in %.2f seconds = %.2f usec/iter\n",
 852                        iters, usec / 1000000., usec / iters);
 853         }
 854
 855         ibv_ack_cq_events(ctx->cq, num_cq_events);
 856
 857         if (pp_close_ctx(ctx))
 858                 return 1;
 859
 860         ibv_free_device_list(dev_list);
 861         free(rem_dest);
 862
 863         return 0;
 864 }