wme_test/wclient.c

   1 #include <errno.h>
   2 #include <error.h>
   3 #include <sys/types.h>
   4 #include <sys/socket.h>
   5 #include <netinet/in.h>
   6 #include <arpa/inet.h>
   7 #include <netdb.h>
   8 #include <signal.h>
   9 #include <sys/wait.h>
  10 #include <stdio.h>
  11 #include <unistd.h>
  12 #include <fcntl.h>
  13 #include <time.h>
  14 #include <string.h>
  15 #include <pthread.h>
  16 #include <string.h>
  17 #include <stdlib.h>
  18 #include <stdbool.h>
  19 #include "common.h"
  20 #include <semaphore.h>
  21 #include <sys/ioctl.h>
  22 #include <net/if.h>
  23
  24 #ifdef WITH_FWP
  25 #include <fwp_confdefs.h>
  26 #include <fwp.h>
  27 #include <fwp_vres.h>
  28 #include <ncurses.h>
  29 #endif
  30
  31 #define MAX_STREAMS  10
  32 #define MIN_GRANULARITY 100
  33
  34 unsigned opt_packet_size = 800;
  35 int opt_send_buf_size = -1;
  36 unsigned opt_period_usec = 10*MSEC_TO_USEC;
  37 char    *opt_interface;
  38 unsigned opt_jitter = 0;
  39 char    *opt_output = "delay_stats";
  40 unsigned opt_count_sec = 0;
  41 unsigned opt_def_bandwidth = 50;
  42 unsigned opt_def_period_msec = 0;
  43 int opt_granularity_usec = MIN_GRANULARITY;
  44 bool opt_wait_for_queue_is_full; /* Don't gather any statistics until any queue is full */
  45 char *opt_comment = NULL;
  46
  47 bool some_queue_is_full = false;
  48 struct timespec reset_timestamp;
  49
  50 bool some_contract_not_accepted = false;
  51
  52 /* Locked when some queue is full to prevent multiple resets of
  53    statstics. */
  54 pthread_mutex_t queue_full_mutex = PTHREAD_MUTEX_INITIALIZER;
  55
  56 int ac_sockfd[AC_NUM];
  57
  58 struct receiver {
  59         bool valid;
  60         pthread_t thread;
  61         unsigned received, last_received;
  62 };
  63
  64 struct receiver receivers[AC_NUM];
  65
  66 FILE* logfd;
  67 char* server_addr;
  68 char logfname[100];
  69
  70 /* maximal traffic delay in ms - 10 s*/
  71 #define MAX_DELAY_US 10000000
  72
  73 struct delay_stat {
  74         unsigned csc;           /* Client-server-client delay divided by 2 */
  75         unsigned cs;            /* Client-server delay */
  76         unsigned sc;            /* Server-client delay */
  77 };
  78
  79 struct delay_stat delay_stats[AC_NUM][MAX_DELAY_US/MIN_GRANULARITY];
  80 pthread_mutex_t delay_stats_mutex = PTHREAD_MUTEX_INITIALIZER;
  81
  82 /*struct ac_stats[AC_NUM] {
  83    unsigned long int min_trans_time;
  84    unsigned long int sum_trans_time;
  85    struct timespec   recv_timestamp;
  86    struct timespec   send_timestamp;
  87 };*/
  88
  89 struct stream {
  90         /* Input parameters */
  91         enum ac ac;             /*  */
  92         int bandwidth_bps;      /* bits per second */
  93         int jitter;             /* percent */
  94         /* Mulualy exclusive input parameters */
  95         int packet_size;
  96         long period_usec;       /* all time units are in microseconds */
  97
  98         /* Internal fields */
  99 #ifndef WITH_FWP
 100         struct sockaddr_in rem_addr;
 101 #else
 102         fwp_contract_d_t contract_send;
 103         fwp_contract_d_t contract_resp;
 104         fwp_endpoint_d_t endpoint;
 105         fwp_endpoint_d_t resp_endpoint;
 106         fwp_vres_d_t vres;
 107         uint16_t resp_port;
 108         struct receiver receiver;
 109         long wc_delay;          /* worst-case delay  */
 110 #endif
 111
 112         /* Statistics */
 113         pthread_mutex_t mutex;
 114         unsigned long long sent, really_sent, received;
 115 };
 116
 117 static struct cmsg_ipi {
 118         struct cmsghdr cm;
 119         struct in_pktinfo ipi;
 120 } cmsg = { {sizeof(struct cmsg_ipi), SOL_IP, IP_PKTINFO},
 121            {0, }};
 122 int cmsg_len = 0;
 123
 124 /*
 125 struct send_endpoint sepoint[] = {
 126         { .ac = AC_VO, .period_usec=200*MSEC_TO_USEC, .bandwidth_bps = 34*Kbit },
 127         { .ac = AC_VI, .period_usec=25*MSEC_TO_USEC, .bandwidth_bps =  480*Kbit },
 128         { .ac = AC_BE, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps =  300*Kbit },
 129         { .ac = AC_BK, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps =  300*Kbit },
 130 //      { .ac = AC_VI, .period_usec=17*MSEC_TO_USEC, .bandwidth_bps =  675*Kbit },
 131 };
 132 */
 133
 134 struct stream streams[MAX_STREAMS];
 135
 136 unsigned int nr_streams = 0;
 137
 138 sem_t sem_thread_finished;
 139
 140 bool exit_flag = false;
 141
 142 #ifdef WITH_FWP
 143 #define negotiate_contract_for_stream(s) negotiate_contract_for_stream_fwp(s)
 144 #define create_stream_endpoint(s) create_stream_endpoint_fwp(s)
 145 #define send_packet(s, b) send_packet_fwp(s, b)
 146 #define recv_packet(s, b) recv_packet_fwp(s, b)
 147 #define wait_for_all_threads_to_finish() wait_for_all_threads_to_finish_fwp()
 148 #else
 149 #define negotiate_contract_for_stream(s) 0
 150 #define create_stream_endpoint(s) create_stream_endpoint_native(s)
 151 #define send_packet(s, b) send_packet_native(s, b)
 152 #define recv_packet(s, b) recv_packet_native(s, b)
 153 #define wait_for_all_threads_to_finish() wait_for_all_threads_to_finish_native()
 154 #endif
 155
 156 void stopper()
 157 {
 158         int i;
 159         exit_flag = true;
 160
 161         /* Interrupt all receivers */
 162 #ifdef WITH_FWP
 163         for (i=0; i < nr_streams; i++) {
 164                 if (streams[i].receiver.valid) pthread_kill(streams[i].receiver.thread, SIGUSR1);
 165                 if (streams[i].contract_send) fwp_contract_cancel(streams[i].contract_send);
 166                 if (streams[i].contract_resp)fwp_contract_cancel(streams[i].contract_resp);
 167         }
 168 #else
 169         for (i=0; i < AC_NUM; i++) {
 170                 pthread_kill(receivers[i].thread, SIGUSR1);
 171         }
 172 #endif
 173 }
 174
 175 void stream_to_text(char *stream_desc, size_t n, struct stream *stream, long long useconds)
 176 {
 177         char buf[3][12];
 178         char real[100];
 179
 180         if (useconds) {
 181                 snprintf(real, sizeof(real), "; real: %s sent %lld (%lld/s), received %lld (%lld/s)",
 182                          bandwidth_to_text(buf[0], (long long)stream->really_sent*stream->packet_size*8*SEC_TO_USEC/useconds),
 183                          stream->sent, stream->sent*SEC_TO_USEC/useconds,
 184                          stream->received, stream->received*SEC_TO_USEC/useconds);
 185         } else {
 186                 real[0]=0;
 187         }
 188
 189         snprintf(stream_desc, n, "%d: %s %s (%d bytes per %s +-%s, %d packets/s)%s",
 190                  stream-streams, ac_to_text[stream->ac], bandwidth_to_text(buf[0], stream->bandwidth_bps),
 191                  stream->packet_size, usec_to_text(buf[1], stream->period_usec),
 192                  usec_to_text(buf[2], stream->jitter*stream->period_usec/100),
 193                  (int)(SEC_TO_USEC/stream->period_usec), real);
 194 }
 195
 196 void save_results(int argc, char *argv[], int useconds)
 197 {
 198         int ac, i, maxi;
 199         const int mini = 3000/opt_granularity_usec;
 200         bool allzeros;
 201         unsigned send_count[AC_NUM];
 202
 203         fprintf(stderr, "Writing data to %s... ", logfname);
 204         fflush(stderr);
 205
 206         fprintf(logfd, "# Invoked as: ");
 207         for (i=0; i<argc; i++) fprintf(logfd, "%s ", argv[i]);
 208         if (opt_comment) {
 209                 fprintf(logfd, "(%s)", opt_comment);
 210         }
 211         fprintf(logfd, "\n");
 212
 213         if (useconds/SEC_TO_USEC != opt_count_sec) {
 214                 char buf[20];
 215                 usec_to_text(buf, useconds);
 216                 fprintf(logfd, "# Data gathered for %s.\n", buf);
 217         }
 218
 219         for (i = 0; i < nr_streams; i++) {
 220                 char stream_desc[200];
 221                 stream_to_text(stream_desc, sizeof(stream_desc), &streams[i], useconds);
 222                 fprintf(logfd, "# Stream %s\n", stream_desc);
 223         }
 224
 225         /* Find maximal delay */
 226         allzeros = true;
 227         for (maxi = MAX_DELAY_US/opt_granularity_usec - 1; maxi >= 0; maxi--) {
 228                 for (ac = 0; ac < AC_NUM; ac++) {
 229                         if ((delay_stats[ac][maxi].csc != 0) ||
 230                             (delay_stats[ac][maxi].cs != 0) ||
 231                             (delay_stats[ac][maxi].sc != 0))
 232                                 allzeros = false;
 233                 }
 234                 if (!allzeros) break;
 235         }
 236         maxi++;
 237         if (maxi < mini) maxi = mini;
 238
 239         /* Calculate total number of sent packets per AC */
 240         memset(send_count, 0, sizeof(send_count));
 241         for (i = 0; i < nr_streams; i++) {
 242                 ac = streams[i].ac;
 243                 send_count[ac] += streams[i].sent;
 244         }
 245
 246 #if 0
 247         /* Write pdf */
 248         for ( i = 0 ; i < maxi; i++) {
 249                 fprintf(logfd,"\n%f", i*opt_granularity_usec/1000.0);
 250                 for (ac = 0; ac < AC_NUM; ac++) {
 251                         if (sum[ac])
 252                                 val = (double)delay_stats[ac][i]*100.0 / sum[ac];
 253                         else val = -1; /* Don't display this ac */
 254                         fprintf(logfd," %lf", val);
 255                 }
 256         }
 257
 258         fprintf(logfd,"\n\n");
 259 #endif
 260
 261         fprintf(logfd,"## Format: msec csc%% cs%% sc%%\n");
 262
 263         /* Write PDF */
 264         for (ac = 0; ac < AC_NUM; ac++) {
 265                 struct delay_stat integral = {0,0,0}, last = {-1,-1,-1};
 266
 267                 fprintf(logfd,"%f %f %f %f\n", 0.0, 0.0, 0.0, 0.0);
 268
 269                 if (send_count[ac] != 0) {
 270                         i=0;
 271                         while ((delay_stats[ac][i].csc == 0) &&
 272                                (delay_stats[ac][i].cs == 0) &&
 273                                (delay_stats[ac][i].sc == 0)) i++;
 274
 275                         for (i++; i < maxi+1; i++) {
 276                                 if (memcmp(&last, &integral, sizeof(last))) {
 277                                         char buf[3][20];
 278                                         snprintf(buf[0], sizeof(buf[0]), "%f", (double)integral.csc*100.0 / send_count[ac]);
 279                                         snprintf(buf[1], sizeof(buf[1]), "%f", (double)integral.cs *100.0 / send_count[ac]);
 280                                         snprintf(buf[2], sizeof(buf[2]), "%f", (double)integral.sc *100.0 / send_count[ac]);
 281
 282                                         fprintf(logfd,"%f %s %s %s\n", i*opt_granularity_usec/1000.0,
 283                                                 integral.csc != last.csc ? buf[0] : "-",
 284                                                 integral.cs  != last.cs  ? buf[1] : "-",
 285                                                 integral.sc  != last.sc  ? buf[2] : "-"
 286                                                 );
 287                                         last = integral;
 288                                 }
 289                                 if (i>0) {
 290                                         integral.csc += delay_stats[ac][i-1].csc;
 291                                         integral.sc  += delay_stats[ac][i-1].sc;
 292                                         integral.cs  += delay_stats[ac][i-1].cs;
 293                                 }
 294                         }
 295                 }
 296                 fprintf(logfd,"\n\n");
 297         }
 298
 299         fprintf(stderr, "finished.\n");
 300         fclose(logfd);
 301
 302         exit(0);
 303 }
 304
 305 int create_ac_socket(unsigned int ac)
 306 {
 307         int sockfd;
 308         unsigned int yes=1, tos;
 309
 310
 311         if ((sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
 312         {
 313                 error(0, errno, "Unable to open socket");
 314                 return -1;
 315         }
 316         if (fcntl(sockfd, F_SETFL, O_NONBLOCK) != 0) {
 317                 error(0, errno, "set non-blocking socket");
 318                 return -1;
 319         }
 320         if (setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
 321                 error(0, errno, "Unable to set socket");
 322                 return -1;
 323         }
 324
 325         if (opt_send_buf_size >= 0) {
 326                 if (setsockopt(sockfd,SOL_SOCKET,SO_SNDBUF,&opt_send_buf_size,sizeof(opt_send_buf_size)) == -1) {
 327                         error(0, errno, "Unable to set socket buffer size");
 328                         return -1;
 329                 }
 330         }
 331
 332
 333         //tos = ((AC_NUM - ac) *2 - 1)*32;
 334         tos = ac_to_tos[ac];
 335         if (setsockopt(sockfd, SOL_IP, IP_TOS, &tos, sizeof(tos))) {
 336                 error(0, errno, "Unable to set TOS");
 337                 close(sockfd);
 338                 return -1;
 339         }
 340
 341         return sockfd;
 342 }
 343
 344 void empty_handler()
 345 {
 346 }
 347
 348 void reset_statistics()
 349 {
 350         int i;
 351         for (i = 0; i < nr_streams; i++) {
 352                 pthread_mutex_lock(&streams[i].mutex);
 353                 streams[i].sent = 0;
 354                 streams[i].really_sent = 0;
 355                 streams[i].received = 0;
 356                 pthread_mutex_unlock(&streams[i].mutex);
 357         }
 358         pthread_mutex_lock(&delay_stats_mutex);
 359         clock_gettime(CLOCK_REALTIME, &reset_timestamp);
 360         memset(delay_stats, 0, sizeof(delay_stats));
 361         pthread_mutex_unlock(&delay_stats_mutex);
 362 }
 363
 364 #ifndef WITH_FWP
 365 int recv_packet_native(unsigned ac, struct msg_t *msg)
 366 {
 367         int     mlen, ret;
 368         fd_set fdset;
 369         struct  sockaddr_in rem_addr;
 370         unsigned int rem_addr_length;
 371
 372         FD_ZERO(&fdset);
 373         FD_SET(ac_sockfd[ac], &fdset);
 374         rem_addr_length = sizeof(rem_addr);
 375         mlen = -1;
 376         while (!exit_flag) {
 377                 ret = select(ac_sockfd[ac]+1, &fdset, NULL, NULL, NULL);
 378                 if (ret < 0) {
 379                         if (errno == EINTR) continue;
 380                         error(0, errno, "receiver select");
 381                         return -1;
 382                 }
 383                 mlen = recvfrom(ac_sockfd[ac], msg, sizeof(*msg), 0,
 384                                 (struct sockaddr*)&rem_addr, &rem_addr_length);
 385                 break;
 386         }
 387         return mlen;
 388 }
 389 #else
 390 int recv_packet_fwp(struct stream *stream, struct msg_t *msg)
 391 {
 392         int     mlen;
 393         mlen = fwp_recv(stream->resp_endpoint, msg, sizeof(*msg), 0);
 394         return mlen;
 395 }
 396 #endif
 397
 398 void* receiver(void* arg)
 399 {
 400         struct msg_t    msg;
 401         long long int trans_time_usec, client_to_server_usec, server_to_client_usec;
 402         long long int min_trans_time;
 403         struct timespec send_timestamp, server_timestamp, recv_timestamp;
 404         int     mlen, ret;
 405         unsigned ac;
 406
 407         min_trans_time = ~0;
 408
 409         block_signals();
 410         set_rt_prio(99);
 411
 412         while (!exit_flag) {
 413 #ifdef WITH_FWP
 414                 struct stream *stream = arg;
 415                 ac = stream->ac;
 416                 mlen = recv_packet_fwp(stream, &msg);
 417 #else
 418                 ac = (unsigned)arg;
 419                 mlen = recv_packet_native(ac, &msg);
 420 #endif
 421                 if (mlen < 0) {
 422                         error(0, errno, "receive_packet error");
 423                         goto out;
 424                 }
 425                 clock_gettime(CLOCK_REALTIME,&recv_timestamp);
 426                 send_timestamp = msg.send_timestamp;
 427                 server_timestamp = msg.sendback_timestamp;
 428
 429                 /* Check whether this message was sent after reset_statistics() */
 430
 431                 if ((ret = timespec_sub_usec(&send_timestamp, &reset_timestamp)) < 0) {
 432                         continue; /* If so, don't count it */
 433                 }
 434
 435                 trans_time_usec = timespec_sub_usec(&recv_timestamp ,&send_timestamp) / 2;
 436                 client_to_server_usec = timespec_sub_usec(&server_timestamp, &send_timestamp);
 437                 server_to_client_usec = timespec_sub_usec(&recv_timestamp, &server_timestamp);
 438
 439                 pthread_mutex_lock(&delay_stats_mutex);
 440                 if (trans_time_usec < MAX_DELAY_US && trans_time_usec >= 0) {
 441                         delay_stats[ac][trans_time_usec/opt_granularity_usec].csc++;
 442                 }
 443                 if (client_to_server_usec < MAX_DELAY_US && client_to_server_usec >= 0) {
 444                         delay_stats[ac][client_to_server_usec/opt_granularity_usec].cs++;
 445                 }
 446                 if (server_to_client_usec < MAX_DELAY_US && server_to_client_usec >= 0) {
 447                         delay_stats[ac][server_to_client_usec/opt_granularity_usec].sc++;
 448                 }
 449                 pthread_mutex_unlock(&delay_stats_mutex);
 450
 451 #ifdef WITH_FWP
 452                 if (trans_time_usec > stream->wc_delay) {
 453                         stream->wc_delay = trans_time_usec;
 454                 }
 455 #endif
 456                 receivers[ac].received++;
 457
 458                 pthread_mutex_lock(&streams[msg.stream].mutex);
 459                 streams[msg.stream].received++;
 460                 pthread_mutex_unlock(&streams[msg.stream].mutex);
 461
 462                 /*if (trans_time_nsec < min_trans_time)
 463                         min_trans_time = trans_time_nsec;*/
 464                 /*printf("seqn= %lu tos= %d start= %lu(s).%lu(ns)"\
 465                          "stop= %lu(s).%lu(ns)\n trans_time = %lums\n",\
 466                          msg.seqn, msg.tos, send_timestamp.tv_sec,\
 467                          send_timestamp.tv_nsec,recv_timestamp.tv_sec,\
 468                          recv_timestamp.tv_nsec, trans_time_msec); */
 469         }
 470 out:
 471         sem_post(&sem_thread_finished);
 472         return NULL;
 473 }
 474
 475 /**
 476  * Send a packet.
 477  *
 478  * @return -1 in case of error, 1 in case of sucessfull send and 0
 479  *         when all buffers are full.
 480  */
 481 #ifndef WITH_FWP
 482 static inline int
 483 send_packet_native(struct stream* stream, union msg_buff* buff)
 484 {
 485         struct iovec  iov;
 486         struct msghdr msg;
 487
 488         iov.iov_base = buff;
 489         iov.iov_len = stream->packet_size;
 490         msg.msg_name = (void*)&stream->rem_addr;
 491         msg.msg_namelen = sizeof(stream->rem_addr);
 492         msg.msg_iov = &iov;
 493         msg.msg_iovlen = 1;
 494         msg.msg_flags = 0;
 495         msg.msg_control = &cmsg;
 496         msg.msg_controllen = cmsg_len;
 497
 498         int ret = 1;
 499
 500         while (sendmsg(ac_sockfd[stream->ac], &msg, 0) < 0) {
 501                 if (errno == EINTR) continue;
 502                 if (errno == EAGAIN) {
 503                         if (opt_wait_for_queue_is_full &&
 504                             !some_queue_is_full &&
 505                             /* We use mutex as atomic test and set */
 506                             (pthread_mutex_trylock(&queue_full_mutex) != EBUSY)) {
 507                                 some_queue_is_full = true;
 508                                 reset_statistics();
 509                         }
 510                         ret = 0;
 511                         break;
 512                 } else {
 513                         error(0, errno, "Error while sending");
 514                         ret = -1;
 515                         break;
 516                 }
 517         }
 518         return ret;
 519 }
 520 #else
 521 static inline int
 522 send_packet_fwp(struct stream* stream, union msg_buff* buff)
 523 {
 524         int ret;
 525
 526         buff->msg.resp_port = htons(stream->resp_port);
 527         ret = fwp_send(stream->endpoint, buff, stream->packet_size, 0);
 528
 529         return ret;
 530 }
 531 #endif
 532
 533 static inline void
 534 wait_for_next_send(struct stream* stream, struct timespec *last_send_time)
 535 {
 536         struct timespec time_to_wait, current_time, period, interval;
 537         unsigned period_usec = stream->period_usec;
 538
 539         /*           |~~~+~~~| jitter interval (width = 2*stream->jitter percentage from period)*/
 540         /* |-------------|     nominal period*/
 541         if (stream->jitter) {
 542                 period.tv_nsec = USEC_TO_NSEC*(period_usec*(100-stream->jitter)/100
 543                                                + rand() % (2*period_usec*stream->jitter/100));
 544         } else {
 545                 period.tv_nsec = USEC_TO_NSEC*(period_usec);
 546         }
 547         period.tv_sec = 0;
 548
 549         timespec_add(&time_to_wait, last_send_time, &period);
 550         clock_gettime(CLOCK_REALTIME,&current_time);
 551         timespec_sub(&interval,&time_to_wait,&current_time);
 552         nanosleep(&interval,NULL);
 553 }
 554
 555
 556 void* sender(void* arg)
 557 {
 558         union msg_buff buff;
 559         unsigned long int seqn;
 560         struct stream* stream = (struct stream*) arg;
 561         int ret;
 562
 563 #ifndef WITH_FWP
 564         char stream_desc[100];
 565         stream_to_text(stream_desc, sizeof(stream_desc), stream, 0);
 566         printf("%s\n", stream_desc);
 567 #endif
 568         if (stream->bandwidth_bps == 0)
 569                 goto out;
 570
 571         seqn = 0;
 572
 573         block_signals();
 574         set_rt_prio(90-stream->ac);
 575
 576         while (!exit_flag) {
 577
 578 /*              buff.msg.seqn = seqn++; */
 579 /*              buff.msg.tos = ac_to_tos[stream->ac]; */
 580                 buff.msg.stream = stream-streams;
 581
 582                 clock_gettime(CLOCK_REALTIME,&buff.msg.send_timestamp);
 583
 584                 ret = send_packet(stream, &buff);
 585                 if (ret < 0) {
 586                         goto out;
 587                 }
 588
 589                 pthread_mutex_lock(&stream->mutex);
 590                 stream->sent++;
 591                 if (ret > 0)
 592                         stream->really_sent++;
 593                 pthread_mutex_unlock(&stream->mutex);
 594
 595 #ifdef DEBUG
 596                 printf("%d", stream->ac);
 597                 fflush(stdout);
 598 #endif
 599
 600                 wait_for_next_send(stream, &buff.msg.send_timestamp);
 601         }
 602 out:
 603         sem_post(&sem_thread_finished);
 604         return NULL;
 605 }
 606
 607 #ifdef WITH_FWP
 608 static int negotiate_contract_for_stream_fwp(struct stream *stream)
 609 {
 610         fwp_contract_t contract;
 611         fwp_vres_d_t vres2;
 612         int ret;
 613
 614         /* Contract for client->server stream */
 615         memset(&contract, 0, sizeof(contract));
 616         contract.budget = stream->packet_size;
 617         contract.period_usec = stream->period_usec;
 618         contract.deadline_usec = 3*stream->period_usec;
 619
 620         stream->contract_send = fwp_contract_create(&contract);
 621         ret = fwp_contract_negotiate(stream->contract_send, &stream->vres);
 622         if (ret != 0) {
 623                 stream->contract_send = NULL;
 624 /*              fprintf(stderr, "Send contract was not accepted\n\n\n"); */
 625                 return ret;
 626         }
 627
 628         /* Contract for server->client stream */
 629         memset(&contract, 0, sizeof(contract));
 630         contract.budget = stream->packet_size;
 631         contract.period_usec = stream->period_usec;
 632         contract.deadline_usec = 3*stream->period_usec;
 633
 634         stream->contract_resp = fwp_contract_create(&contract);
 635         ret = fwp_contract_negotiate(stream->contract_resp, &vres2);
 636         if (ret != 0) {
 637                 stream->contract_resp = NULL;
 638 /*              fprintf(stderr, "Receive contract was not accepted\n\n\n"); */
 639                 return ret;
 640         }
 641
 642         /* We don't use the vres at server, since the server doesn't
 643          * know the parameters. Instread, server uses plain
 644          * sockets. */
 645
 646         return ret;
 647 }
 648 #endif
 649
 650 #ifdef WITH_FWP
 651 static void create_stream_endpoint_fwp(struct stream *stream)
 652 {
 653 /*      fwp_endpoint_attr_t  attr; */
 654         int ret;
 655         struct hostent* ph;
 656
 657         stream->ac = fwp_vres_get_ac(stream->vres);
 658
 659 /*      fwp_endpoint_attr_init(&attr); */
 660 /*      fwp_endpoint_attr_setreliability(&attr, FWP_EPOINT_BESTEFFORT); */
 661
 662         ph = gethostbyname(server_addr);
 663         if (ph && ph->h_addr_list[0]) {
 664                 struct in_addr *a = (struct in_addr *)(ph->h_addr_list[0]);
 665                 ret = fwp_send_endpoint_create(a->s_addr, BASE_PORT + stream->ac,
 666                                                NULL, &stream->endpoint);
 667                 /* stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac); */
 668                 if (ret < 0) error(1, errno, "fwp_send_endpoint_create");
 669
 670                 ret = fwp_send_endpoint_bind(stream->endpoint, stream->vres);
 671                 if (ret != 0) error(1, errno, "fwp_send_endpoint_bind");
 672
 673                 ret = fwp_receive_endpoint_create(0, NULL, &stream->resp_endpoint);
 674                 if (ret != 0) error(1, errno, "fwp_receive_endpoint_create");
 675
 676                 unsigned int port;
 677                 fwp_endpoint_get_params(stream->resp_endpoint, NULL, &port, NULL);
 678                 stream->resp_port = port;
 679
 680                 ret = pthread_create(&stream->receiver.thread, NULL, receiver, (void*)stream);
 681                 if (ret) error(1, ret, "Error while creating receiver");
 682
 683                 stream->receiver.valid = true;
 684         }
 685         else {
 686                 error(1, errno, "gethostbyname(%s)", server_addr);
 687         }
 688
 689 }
 690 #else
 691 static void create_stream_endpoint_native(struct stream *stream)
 692 {
 693         struct hostent* ph;
 694
 695         memset(&stream->rem_addr,0, sizeof(stream->rem_addr));
 696
 697         stream->rem_addr.sin_family = AF_INET;
 698         ph = gethostbyname(server_addr);
 699         if (ph)
 700                 stream->rem_addr.sin_addr = *((struct in_addr *)ph->h_addr);
 701         else {
 702                 error(1, errno, "gethostbyname(%s)", server_addr);
 703         }
 704         stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac);
 705 }
 706 #endif
 707
 708 static inline void
 709 calc_stream_params(struct stream *stream)
 710 {
 711         int packet_size;
 712         unsigned period_usec;
 713         int bandwidth;
 714         int ret;
 715
 716         /* If some parameters are not set explicitely, use default values. */
 717         if (stream->bandwidth_bps < 0) stream->bandwidth_bps = opt_def_bandwidth * Kbit;
 718         if (stream->packet_size < 0) stream->packet_size = opt_packet_size;
 719         if (stream->period_usec < 0) stream->period_usec = opt_def_period_msec * MSEC_TO_USEC;
 720
 721         bandwidth = stream->bandwidth_bps;
 722
 723         /* Avoid arithmetic exception. Server thread will exit if
 724            stream->bandwidth_bps == 0. */
 725         if (bandwidth == 0) bandwidth = 1;
 726
 727         if (stream->packet_size) {
 728                 packet_size = stream->packet_size;
 729                 period_usec = SEC_TO_USEC*packet_size*8/bandwidth;
 730                 if (period_usec == 0) period_usec = 1;
 731         } else if (stream->period_usec) {
 732                 period_usec = stream->period_usec;
 733                 packet_size = (long long)bandwidth/8 * period_usec/SEC_TO_USEC;
 734         } else {
 735                 char buf[200];
 736                 stream_to_text(buf, sizeof(buf), stream, 0);
 737                 error(1, 0, "Neither packet size nor period was specified for a stream %s", buf);
 738         }
 739
 740         if (packet_size < sizeof(struct msg_t)) {
 741                 error(1, 0, "Packet size too small (min %d)", sizeof(struct msg_t));
 742         }
 743
 744         stream->packet_size = packet_size;
 745         stream->period_usec = period_usec;
 746         stream->jitter = opt_jitter;
 747
 748         ret = negotiate_contract_for_stream(stream);
 749         if (ret == 0) {
 750                 create_stream_endpoint(stream);
 751         } else {
 752                 char buf[200];
 753                 stream_to_text(buf, sizeof(buf), stream, 0);
 754                 fprintf(stderr, "Contract hasn't been accepted:\n%s\n", buf);
 755                 stream->bandwidth_bps = 0;
 756                 some_contract_not_accepted = true;
 757         }
 758 }
 759
 760 /**
 761  * Parse -b parameter.
 762  *
 763  * @param params String to parse
 764  *
 765  * @return NULL in case of success, pointer to a problematic character
 766  *         on error.
 767  */
 768 char* parse_bandwidths(char *params)
 769 {
 770         struct stream *sp = &streams[nr_streams];
 771
 772         while (*params && nr_streams < MAX_STREAMS) {
 773                 char *ac_ids[AC_NUM] = { [AC_VO]="VO", [AC_VI]="VI", [AC_BE]="BE", [AC_BK]="BK" };
 774                 int i;
 775                 char *next_char;
 776
 777                 if (strlen(params) < 2)
 778                         return params;
 779                 for (i=0; i<AC_NUM; i++) {
 780                         if (strncmp(params, ac_ids[i], 2) == 0) {
 781                                 sp->ac = i;
 782                                 params+=strlen(ac_ids[i]);
 783                                 break;
 784                         }
 785                 }
 786                 if (i==AC_NUM)
 787                         return params;
 788
 789                 long bw;
 790                 if (*params == ':') {
 791                         params++;
 792
 793                         bw = strtol(params, &next_char, 10);
 794                         if (next_char == params)
 795                                 return params;
 796                         params = next_char;
 797                 } else
 798                         bw = -1;
 799
 800                 sp->bandwidth_bps = bw*Kbit;
 801
 802                 long period = 0;
 803                 long packet_size = 0;
 804                 if (*params == '@') {
 805                         params++;
 806                         period = strtol(params, &next_char, 10);
 807                         if (period == 0)
 808                                 return params;
 809                         params = next_char;
 810                 }
 811                 else {
 812                         if (*params == '/') {
 813                                 params++;
 814                                 packet_size = strtol(params, &next_char, 10);
 815                                 if (packet_size == 0)
 816                                         return params;
 817                                 params = next_char;
 818                         } else {
 819                                 packet_size = -1;
 820                                 period = -1;
 821                         }
 822                 }
 823                 sp->period_usec = period*MSEC_TO_USEC;
 824                 sp->packet_size = packet_size;
 825
 826
 827
 828                 if (*params != '\0' && *params != ',')
 829                         return params;
 830                 nr_streams++;
 831                 sp++;
 832                 if (*params == ',')
 833                         params++;
 834         }
 835         return NULL;
 836 }
 837
 838 #ifdef WITH_FWP
 839 void wait_for_all_threads_to_finish_fwp(void)
 840 {
 841         int i;
 842         /* Wait for all threads to finish */
 843         /* FIXME: */
 844 /*      for (i=0; i < 2*nr_streams; i++) { */
 845 /*              sem_wait(&sem_thread_finished); */
 846 /*      } */
 847 }
 848 #else
 849 void wait_for_all_threads_to_finish_native(void)
 850 {
 851         int i;
 852         /* Wait for all threads to finish */
 853         for (i=0; i < nr_streams + AC_NUM; i++) {
 854                 sem_wait(&sem_thread_finished);
 855         }
 856 }
 857 #endif
 858
 859 #ifdef WITH_FWP
 860 void init_gui()
 861 {
 862         initscr();
 863         cbreak();
 864         noecho();
 865 }
 866
 867 #define addfield(title, format, ...)                                    \
 868         move(y, x);                                                     \
 869         x+=strlen(title)+1;                                             \
 870         if (i == 0) addstr(title);                                      \
 871         else {                                                          \
 872                 snprintf(str, sizeof(str), format, __VA_ARGS__);        \
 873                 addstr(str);                                            \
 874         }
 875
 876 void print_status(int seconds)
 877 {
 878         int i;
 879         char str[200], s1[20];
 880         int x = 0, y;
 881         struct stream *s = NULL;
 882
 883         for (i = 0; i <= nr_streams; i++) {
 884                 if (i>0) s = &streams[i-1];
 885                 y=i;
 886                 x=0;
 887                 addfield("Stream", "%d", i);
 888                 addfield("Bandwidth", "%s", bandwidth_to_text(s1, s->bandwidth_bps));
 889                 addfield("Packet size", "%d bytes", s->packet_size);
 890                 addfield("Period   ", "%s", usec_to_text(s1, s->period_usec));
 891                 addfield("AC   ", "%s", ac_to_text[s->ac]);
 892                 addfield("Worst-case delay", "%s", usec_to_text(s1, s->wc_delay));
 893                 addfield("Received responses", "%lld", s->received);
 894         }
 895         refresh();
 896 }
 897 #else
 898 void init_gui() {}
 899 void print_status(int seconds)
 900 {
 901         int ac;
 902         fprintf(stderr, "\r%3ds", seconds);
 903         for (ac = 0; ac < AC_NUM; ac++) {
 904                 int delta = receivers[ac].received - receivers[ac].last_received;
 905                 receivers[ac].last_received = receivers[ac].received;
 906                 fprintf(stderr, " %s %5d %4d/s", ac_to_text[ac], receivers[ac].received, delta);
 907         }
 908         fflush(stderr);
 909 }
 910 #endif
 911
 912 int main(int argc, char *argv[])
 913 {
 914         int i, rc, frames, seconds;
 915         pthread_attr_t attr;
 916         pthread_t thread;
 917         char opt;
 918
 919
 920         while ((opt = getopt(argc, argv, "B:b:C:c:g:I:j:o:qQ:s:T:")) != -1) {
 921                 switch (opt) {
 922                         case 'B':
 923                                 opt_def_bandwidth = atoi(optarg);
 924                                 break;
 925                         case 'b': {
 926                                 char *errpos;
 927                                 errpos = parse_bandwidths(optarg);
 928                                 if (errpos != NULL) {
 929                                         if (*errpos == '\0')
 930                                                 error(1, 0, "Bandwidth parse error - string to short");
 931                                         else
 932                                                 error(1, 0, "Bandwidth parse error at '%s'", errpos);
 933                                 }
 934                                 break;
 935                         }
 936                         case 'C':
 937                                 opt_comment = optarg;
 938                                 break;
 939                         case 'c':
 940                                 opt_count_sec = atoi(optarg);
 941                                 break;
 942                         case 'g':
 943                                 opt_granularity_usec = atoi(optarg);
 944                                 if (opt_granularity_usec < MIN_GRANULARITY) {
 945                                         error(1, 0, "Granulatiry too small (min %d)", MIN_GRANULARITY);
 946                                 }
 947                                 break;
 948                         case 'I':
 949                                 opt_interface = optarg;
 950                                 break;
 951                         case 'j':
 952                                 #ifdef WITH_FWP
 953                                 error(1, 0, "-j is not allowd when compiled with FWP");
 954                                 #else
 955                                 opt_jitter = atoi(optarg);
 956                                 #endif
 957                                 break;
 958                         case 'o':
 959                                 opt_output = optarg;
 960                                 break;
 961                         case 'Q':
 962                                 opt_send_buf_size = atoi(optarg);
 963                                 break;
 964                         case 'q':
 965                                 opt_wait_for_queue_is_full = true;
 966                                 break;
 967                         case 's':
 968                                 opt_packet_size = atoi(optarg);
 969                                 break;
 970                         case 'T':
 971                                 opt_def_period_msec = atoi(optarg);
 972                                 break;
 973                         default:
 974                                 fprintf(stderr, "Usage: %s [ options ] server_addr\n\n", argv[0]);
 975                                 fprintf(stderr, "Options:\n");
 976                                 fprintf(stderr, "    -B  default bandwidth for -b option [kbit]\n");
 977                                 fprintf(stderr, "    -b  bandwidth of streams (VO|VI|BE|BK)[:<kbit>][@<msec> or /<bytes>][,...]\n");
 978                                 fprintf(stderr, "    -C  comment (added to header)\n");
 979                                 fprintf(stderr, "    -c  count (number of seconds to run)\n");
 980                                 fprintf(stderr, "    -g  histogram granularity [usec]\n");
 981                                 fprintf(stderr, "    -I  <interface> send packets from this interface");
 982                                 fprintf(stderr, "    -j  send jitter (0-100) [%%]\n");
 983                                 fprintf(stderr, "    -o  output filename (.dat will be appended)\n");
 984                                 fprintf(stderr, "    -q  gather statistics only after some queue becomes full\n");
 985                                 fprintf(stderr, "    -Q  <bytes> set size for socket send buffers\n");
 986                                 fprintf(stderr, "    -s  size of data payload in packets [bytes] (default: %d)\n", opt_packet_size);
 987                                 fprintf(stderr, "    -T  default period for -b option [msec]\n");
 988                                 exit(1);
 989                 }
 990         }
 991         if (opt_packet_size && opt_def_period_msec) {
 992                 error(1, 0, "Error: Nonzero -T and -s can't be used together!");
 993         }
 994
 995         if (optind < argc) {
 996                 server_addr = argv[optind];
 997         } else {
 998                 error(1, 0, "Expected server address argument");
 999         }
1000
1001         if (nr_streams == 0)
1002                 parse_bandwidths("BE");
1003
1004         pthread_attr_init(&attr);
1005
1006         snprintf(logfname, sizeof(logfname), "%s.dat", opt_output);
1007
1008         if ((logfd = fopen(logfname,"w+")) == NULL) {
1009                 error(1, errno ,"Can not open %s", logfname);
1010         }
1011         if (signal(SIGTERM, stopper) == SIG_ERR) {
1012                 error(1, errno, "Error in signal registration");
1013         }
1014
1015         if (signal(SIGINT, stopper) == SIG_ERR) {
1016                 error(1, errno, "Signal handler registration error");
1017         }
1018
1019         struct sigaction sa;
1020         sa.sa_handler = empty_handler;
1021         sa.sa_flags = 0;        /* don't restart syscalls */
1022
1023         if (sigaction(SIGUSR1, &sa, NULL) < 0) {
1024                 error(1, errno, "sigaction error");
1025         }
1026
1027         sem_init(&sem_thread_finished, 0, 0);
1028
1029         reset_statistics();
1030
1031 #ifdef WITH_FWP
1032         rc = fwp_init();
1033         if (rc != 0) {
1034                 error(1, errno, "FWP initialization failed");
1035         }
1036 #else
1037         int ac;
1038         /* create four receivers each per AC */
1039         for (ac = AC_NUM - 1; ac >= 0; ac--) {
1040                 ac_sockfd[ac] = create_ac_socket(ac);
1041                 if (ac_sockfd[ac] < 0) {
1042                         return 1;
1043                 }
1044                 rc = pthread_create(&receivers[ac].thread, &attr, receiver, (void*) ac);
1045                 if (rc) {
1046                         error(1, rc, "Error while creating receiver");
1047                 }
1048                 receivers[ac].valid = true;
1049         }
1050 #endif
1051
1052
1053         if (opt_interface) {
1054                 struct ifreq ifr;
1055
1056                 memset(&ifr, 0, sizeof(ifr));
1057                 strncpy(ifr.ifr_name, opt_interface, IFNAMSIZ-1);
1058                 if (ioctl(ac_sockfd[AC_VO], SIOCGIFINDEX, &ifr) < 0) {
1059                         error(1, 0, "unknown iface %s", opt_interface);
1060                 }
1061                 cmsg.ipi.ipi_ifindex = ifr.ifr_ifindex;
1062                 cmsg_len = sizeof(cmsg);
1063         }
1064         /* create sendpoints */
1065         for (i = 0; i < nr_streams; i++) {
1066                 struct stream *s = &streams[i];
1067                 pthread_mutex_init(&s->mutex, NULL);
1068                 calc_stream_params(s);
1069                 rc = pthread_create(&thread, &attr, sender, (void*) s);
1070                 if (rc) error(1, rc, "Error while creating sender");
1071         }
1072
1073         if (some_contract_not_accepted) {
1074                 stopper();
1075         } else {
1076                 //init_gui();
1077
1078                 seconds = 1;
1079                 frames=0;
1080                 while (!exit_flag) {
1081                         usleep(40000);
1082                         frames++;
1083                         if (frames>=25) {
1084                                 seconds++;
1085                                 frames = 0;
1086                         }
1087                         print_status(seconds);
1088                         if (seconds == opt_count_sec)
1089                                 stopper();
1090                 }
1091         }
1092
1093 #ifdef WITH_FWP
1094         //endwin();
1095         fwp_done();
1096 #else
1097         fprintf(stderr, "\nWaiting for threads to finish\n");
1098         wait_for_all_threads_to_finish();
1099
1100         struct timespec end_timestamp, measure_length;
1101         clock_gettime(CLOCK_REALTIME,&end_timestamp);
1102         timespec_sub(&measure_length, &end_timestamp, &reset_timestamp);
1103
1104         save_results(argc, argv, timespec2usec(&measure_length));
1105 #endif
1106
1107         return 0;
1108 }