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 #include <inttypes.h>
  24 #include <ncurses.h>
  25
  26 #ifdef WITH_FWP
  27 #include <ul_logreg.h>
  28 #endif
  29
  30 #ifdef WITH_FWP
  31 #include <frsh.h>
  32 #include <fwp_res.h>
  33
  34 /* static UL_LOG_CUST(ulogd); */
  35 /* static ul_log_domain_t ulogd = {UL_LOGL_MSG, "wclient"}; */
  36 /* UL_LOGREG_SINGLE_DOMAIN_INIT_FUNCTION(init_ulogd_wclient, ulogd); */
  37
  38 #endif
  39
  40 #define MAX_STREAMS  10
  41 #define MIN_GRANULARITY 100
  42
  43 unsigned opt_packet_size = 800;
  44 int opt_send_buf_size = -1;
  45 unsigned opt_period_usec = 10*MSEC_TO_USEC;
  46 char    *opt_interface;
  47 unsigned opt_jitter = 0;
  48 char    *opt_output = "delay_stats";
  49 unsigned opt_count_sec = 0;
  50 unsigned opt_def_bandwidth = 50;
  51 unsigned opt_def_period_msec = 0;
  52 int opt_granularity_usec = MIN_GRANULARITY;
  53 bool opt_wait_for_queue_is_full; /* Don't gather any statistics until any queue is full */
  54 char *opt_comment = NULL;
  55 bool opt_gui = false;
  56
  57 bool some_queue_is_full = false;
  58 uint64_t reset_timestamp; /* [nsec] */
  59
  60 bool some_contract_not_accepted = false;
  61
  62 /* Locked when some queue is full to prevent multiple resets of
  63    statstics. */
  64 pthread_mutex_t queue_full_mutex = PTHREAD_MUTEX_INITIALIZER;
  65
  66 int ac_sockfd[AC_NUM];
  67
  68 struct receiver {
  69         bool valid;
  70         pthread_t thread;
  71         unsigned received, last_received;
  72 };
  73
  74 struct receiver receivers[AC_NUM];
  75
  76 FILE* logfd;
  77 char* server_addr;
  78 char logfname[100];
  79
  80 /* maximal traffic delay in ms - 10 s*/
  81 #define MAX_DELAY_US 10000000
  82
  83 struct delay_stat {
  84         unsigned csc;           /* Client-server-client delay divided by 2 */
  85         unsigned cs;            /* Client-server delay */
  86         unsigned sc;            /* Server-client delay */
  87 };
  88
  89 struct delay_stat delay_stats[AC_NUM][MAX_DELAY_US/MIN_GRANULARITY];
  90 pthread_mutex_t delay_stats_mutex = PTHREAD_MUTEX_INITIALIZER;
  91
  92 /*struct ac_stats[AC_NUM] {
  93    unsigned long int min_trans_time;
  94    unsigned long int sum_trans_time;
  95    struct timespec   recv_timestamp;
  96    struct timespec   send_timestamp;
  97 };*/
  98
  99 struct stream {
 100         /* Input parameters */
 101         enum ac ac;             /*  */
 102         int bandwidth_bps;      /* bits per second */
 103         int jitter;             /* percent */
 104         /* Mulualy exclusive input parameters */
 105         int packet_size;
 106         long period_usec;       /* all time units are in microseconds */
 107
 108         /* Internal fields */
 109 #ifndef WITH_FWP
 110         struct sockaddr_in rem_addr;
 111 #else
 112         frsh_send_endpoint_t endpoint;
 113         frsh_receive_endpoint_t resp_endpoint;
 114         frsh_vres_id_t vres, vres_rcv;
 115         uint16_t resp_port;
 116         struct receiver receiver;
 117 #endif
 118
 119         /* Statistics */
 120         pthread_mutex_t mutex;
 121         unsigned long long sent, really_sent, received;
 122         long wc_delay;          /* worst-case delay  */
 123 };
 124
 125 static struct cmsg_ipi {
 126         struct cmsghdr cm;
 127         struct in_pktinfo ipi;
 128 } cmsg = { {sizeof(struct cmsg_ipi), SOL_IP, IP_PKTINFO},
 129            {0, }};
 130 int cmsg_len = 0;
 131
 132 /*
 133 struct send_endpoint sepoint[] = {
 134         { .ac = AC_VO, .period_usec=200*MSEC_TO_USEC, .bandwidth_bps = 34*Kbit },
 135         { .ac = AC_VI, .period_usec=25*MSEC_TO_USEC, .bandwidth_bps =  480*Kbit },
 136         { .ac = AC_BE, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps =  300*Kbit },
 137         { .ac = AC_BK, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps =  300*Kbit },
 138 //      { .ac = AC_VI, .period_usec=17*MSEC_TO_USEC, .bandwidth_bps =  675*Kbit },
 139 };
 140 */
 141
 142 struct stream streams[MAX_STREAMS];
 143
 144 unsigned int nr_streams = 0;
 145
 146 sem_t sem_thread_finished;
 147
 148 bool exit_flag = false;
 149
 150 #ifdef WITH_FWP
 151 #define negotiate_contract_for_stream(s) negotiate_contract_for_stream_fwp(s)
 152 #define create_stream_endpoint(s) create_stream_endpoint_fwp(s)
 153 #define send_packet(s, b) send_packet_fwp(s, b)
 154 #define recv_packet(s, b) recv_packet_fwp(s, b)
 155 #define wait_for_all_threads_to_finish() wait_for_all_threads_to_finish_fwp()
 156 #else
 157 #define negotiate_contract_for_stream(s) 0
 158 #define create_stream_endpoint(s) create_stream_endpoint_native(s)
 159 #define send_packet(s, b) send_packet_native(s, b)
 160 #define recv_packet(s, b) recv_packet_native(s, b)
 161 #define wait_for_all_threads_to_finish() wait_for_all_threads_to_finish_native()
 162 #endif
 163
 164 void stopper()
 165 {
 166         int i;
 167         exit_flag = true;
 168
 169         /* Interrupt all receivers */
 170 #ifdef WITH_FWP
 171         for (i=0; i < nr_streams; i++) {
 172                 if (streams[i].receiver.valid) pthread_kill(streams[i].receiver.thread, SIGUSR1);
 173         }
 174 #else
 175         for (i=0; i < AC_NUM; i++) {
 176                 pthread_kill(receivers[i].thread, SIGUSR1);
 177         }
 178 #endif
 179 }
 180
 181 void stream_to_text(char *stream_desc, size_t n, struct stream *stream, long long useconds)
 182 {
 183         char buf[3][12];
 184         char real[100];
 185
 186         if (useconds) {
 187                 snprintf(real, sizeof(real), "; real: %s sent %lld (%lld/s), received %lld (%lld/s)",
 188                          bandwidth_to_text(buf[0], (long long)stream->really_sent*stream->packet_size*8*SEC_TO_USEC/useconds),
 189                          stream->sent, stream->sent*SEC_TO_USEC/useconds,
 190                          stream->received, stream->received*SEC_TO_USEC/useconds);
 191         } else {
 192                 real[0]=0;
 193         }
 194
 195         snprintf(stream_desc, n, "%"PRIdPTR": %s %s (%d bytes per %s +-%s, %d packets/s)%s",
 196                  stream-streams, ac_to_text[stream->ac], bandwidth_to_text(buf[0], stream->bandwidth_bps),
 197                  stream->packet_size, usec_to_text(buf[1], stream->period_usec),
 198                  usec_to_text(buf[2], stream->jitter*stream->period_usec/100),
 199                  (int)(SEC_TO_USEC/stream->period_usec), real);
 200 }
 201
 202 void save_results(int argc, char *argv[], int useconds)
 203 {
 204         int ac, i, maxi;
 205         const int mini = 3000/opt_granularity_usec;
 206         bool allzeros;
 207         unsigned send_count[AC_NUM];
 208
 209         fprintf(stderr, "Writing data to %s... ", logfname);
 210         fflush(stderr);
 211
 212         fprintf(logfd, "# Invoked as: ");
 213         for (i=0; i<argc; i++) fprintf(logfd, "%s ", argv[i]);
 214         if (opt_comment) {
 215                 fprintf(logfd, "(%s)", opt_comment);
 216         }
 217         fprintf(logfd, "\n");
 218
 219         if (useconds/SEC_TO_USEC != opt_count_sec) {
 220                 char buf[20];
 221                 usec_to_text(buf, useconds);
 222                 fprintf(logfd, "# Data gathered for %s.\n", buf);
 223         }
 224
 225         for (i = 0; i < nr_streams; i++) {
 226                 char stream_desc[200];
 227                 stream_to_text(stream_desc, sizeof(stream_desc), &streams[i], useconds);
 228                 fprintf(logfd, "# Stream %s\n", stream_desc);
 229         }
 230
 231         /* Find maximal delay */
 232         allzeros = true;
 233         for (maxi = MAX_DELAY_US/opt_granularity_usec - 1; maxi >= 0; maxi--) {
 234                 for (ac = 0; ac < AC_NUM; ac++) {
 235                         if ((delay_stats[ac][maxi].csc != 0) ||
 236                             (delay_stats[ac][maxi].cs != 0) ||
 237                             (delay_stats[ac][maxi].sc != 0))
 238                                 allzeros = false;
 239                 }
 240                 if (!allzeros) break;
 241         }
 242         maxi++;
 243         if (maxi < mini) maxi = mini;
 244
 245         /* Calculate total number of sent packets per AC */
 246         memset(send_count, 0, sizeof(send_count));
 247         for (i = 0; i < nr_streams; i++) {
 248                 ac = streams[i].ac;
 249                 send_count[ac] += streams[i].sent;
 250         }
 251
 252 #if 0
 253         /* Write pdf */
 254         for ( i = 0 ; i < maxi; i++) {
 255                 fprintf(logfd,"\n%f", i*opt_granularity_usec/1000.0);
 256                 for (ac = 0; ac < AC_NUM; ac++) {
 257                         if (sum[ac])
 258                                 val = (double)delay_stats[ac][i]*100.0 / sum[ac];
 259                         else val = -1; /* Don't display this ac */
 260                         fprintf(logfd," %lf", val);
 261                 }
 262         }
 263
 264         fprintf(logfd,"\n\n");
 265 #endif
 266
 267         fprintf(logfd,"## Format: msec csc%% cs%% sc%%\n");
 268
 269         /* Write PDF */
 270         for (ac = 0; ac < AC_NUM; ac++) {
 271                 struct delay_stat integral = {0,0,0}, last = {-1,-1,-1};
 272
 273                 fprintf(logfd,"%f %f %f %f\n", 0.0, 0.0, 0.0, 0.0);
 274
 275                 if (send_count[ac] != 0) {
 276                         i=0;
 277                         while ((delay_stats[ac][i].csc == 0) &&
 278                                (delay_stats[ac][i].cs == 0) &&
 279                                (delay_stats[ac][i].sc == 0)) i++;
 280
 281                         for (i++; i < maxi+1; i++) {
 282                                 if (memcmp(&last, &integral, sizeof(last))) {
 283                                         char buf[3][20];
 284                                         snprintf(buf[0], sizeof(buf[0]), "%f", (double)integral.csc*100.0 / send_count[ac]);
 285                                         snprintf(buf[1], sizeof(buf[1]), "%f", (double)integral.cs *100.0 / send_count[ac]);
 286                                         snprintf(buf[2], sizeof(buf[2]), "%f", (double)integral.sc *100.0 / send_count[ac]);
 287
 288                                         fprintf(logfd,"%f %s %s %s\n", i*opt_granularity_usec/1000.0,
 289                                                 integral.csc != last.csc ? buf[0] : "-",
 290                                                 integral.cs  != last.cs  ? buf[1] : "-",
 291                                                 integral.sc  != last.sc  ? buf[2] : "-"
 292                                                 );
 293                                         last = integral;
 294                                 }
 295                                 if (i>0) {
 296                                         integral.csc += delay_stats[ac][i-1].csc;
 297                                         integral.sc  += delay_stats[ac][i-1].sc;
 298                                         integral.cs  += delay_stats[ac][i-1].cs;
 299                                 }
 300                         }
 301                 }
 302                 fprintf(logfd,"\n\n");
 303         }
 304
 305         fprintf(stderr, "finished.\n");
 306         fclose(logfd);
 307
 308         exit(0);
 309 }
 310
 311 int create_ac_socket(intptr_t ac)
 312 {
 313         int sockfd;
 314         unsigned int yes=1, tos;
 315
 316
 317         if ((sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
 318         {
 319                 error(0, errno, "Unable to open socket");
 320                 return -1;
 321         }
 322         if (fcntl(sockfd, F_SETFL, O_NONBLOCK) != 0) {
 323                 error(0, errno, "set non-blocking socket");
 324                 return -1;
 325         }
 326         if (setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
 327                 error(0, errno, "Unable to set socket");
 328                 return -1;
 329         }
 330
 331         if (opt_send_buf_size >= 0) {
 332                 if (setsockopt(sockfd,SOL_SOCKET,SO_SNDBUF,&opt_send_buf_size,sizeof(opt_send_buf_size)) == -1) {
 333                         error(0, errno, "Unable to set socket buffer size");
 334                         return -1;
 335                 }
 336         }
 337
 338
 339         //tos = ((AC_NUM - ac) *2 - 1)*32;
 340         tos = ac_to_tos[ac];
 341         if (setsockopt(sockfd, SOL_IP, IP_TOS, &tos, sizeof(tos))) {
 342                 error(0, errno, "Unable to set TOS");
 343                 close(sockfd);
 344                 return -1;
 345         }
 346
 347         return sockfd;
 348 }
 349
 350 void empty_handler()
 351 {
 352 }
 353
 354 void reset_statistics()
 355 {
 356         int i;
 357         struct timespec ts;
 358         for (i = 0; i < nr_streams; i++) {
 359                 pthread_mutex_lock(&streams[i].mutex);
 360                 streams[i].sent = 0;
 361                 streams[i].really_sent = 0;
 362                 streams[i].received = 0;
 363                 pthread_mutex_unlock(&streams[i].mutex);
 364         }
 365         pthread_mutex_lock(&delay_stats_mutex);
 366         clock_gettime(CLOCK_REALTIME, &ts);
 367         reset_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
 368         memset(delay_stats, 0, sizeof(delay_stats));
 369         pthread_mutex_unlock(&delay_stats_mutex);
 370 }
 371
 372 #ifndef WITH_FWP
 373 int recv_packet_native(intptr_t ac, struct msg_t *msg)
 374 {
 375         int     mlen, ret;
 376         fd_set fdset;
 377         struct  sockaddr_in rem_addr;
 378         unsigned int rem_addr_length;
 379
 380         FD_ZERO(&fdset);
 381         FD_SET(ac_sockfd[ac], &fdset);
 382         rem_addr_length = sizeof(rem_addr);
 383         mlen = -1;
 384         while (!exit_flag) {
 385                 ret = select(ac_sockfd[ac]+1, &fdset, NULL, NULL, NULL);
 386                 if (ret < 0) {
 387                         if (errno == EINTR) continue;
 388                         error(0, errno, "receiver select");
 389                         return -1;
 390                 }
 391                 mlen = recvfrom(ac_sockfd[ac], msg, sizeof(*msg), 0,
 392                                 (struct sockaddr*)&rem_addr, &rem_addr_length);
 393                 break;
 394         }
 395         return mlen;
 396 }
 397 #else
 398 int recv_packet_fwp(struct stream *stream, struct msg_t *msg)
 399 {
 400         int ret;
 401         size_t mlen;
 402
 403         ret = frsh_receive_sync(stream->resp_endpoint, msg, sizeof(*msg), &mlen, NULL);
 404         return mlen;
 405 }
 406 #endif
 407
 408 void* receiver(void* arg)
 409 {
 410         struct msg_t    msg;
 411         long long int trans_time_usec, client_to_server_usec, server_to_client_usec;
 412         long long int min_trans_time;
 413         struct timespec ts;
 414         uint64_t send_timestamp, server_timestamp, recv_timestamp;
 415         int     mlen;
 416         intptr_t ac;
 417
 418         min_trans_time = ~0;
 419
 420         block_signals();
 421         set_rt_prio(99);
 422
 423         while (!exit_flag) {
 424 #ifdef WITH_FWP
 425                 struct stream *stream = arg;
 426                 ac = stream->ac;
 427                 mlen = recv_packet_fwp(stream, &msg);
 428 #else
 429                 ac = (intptr_t)arg;
 430                 mlen = recv_packet_native(ac, &msg);
 431 #endif
 432                 if (mlen < 0) {
 433                         if (errno != EINTR)
 434                                 error(0, errno, "receive_packet error");
 435                         goto out;
 436                 }
 437                 clock_gettime(CLOCK_REALTIME,&ts);
 438                 recv_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
 439                 send_timestamp = msg.send_timestamp;
 440                 server_timestamp = msg.sendback_timestamp;
 441
 442                 /* Check whether this message was sent after reset_statistics() */
 443
 444                 if (send_timestamp < reset_timestamp) {
 445                         continue; /* If so, don't count it */
 446                 }
 447
 448                 trans_time_usec = (recv_timestamp - send_timestamp) / 2 / 1000;
 449                 client_to_server_usec = (server_timestamp - send_timestamp) / 1000;
 450                 server_to_client_usec = (recv_timestamp - server_timestamp) / 1000;
 451
 452                 pthread_mutex_lock(&delay_stats_mutex);
 453                 if (trans_time_usec < MAX_DELAY_US && trans_time_usec >= 0) {
 454                         delay_stats[ac][trans_time_usec/opt_granularity_usec].csc++;
 455                 }
 456                 if (client_to_server_usec < MAX_DELAY_US && client_to_server_usec >= 0) {
 457                         delay_stats[ac][client_to_server_usec/opt_granularity_usec].cs++;
 458                 }
 459                 if (server_to_client_usec < MAX_DELAY_US && server_to_client_usec >= 0) {
 460                         delay_stats[ac][server_to_client_usec/opt_granularity_usec].sc++;
 461                 }
 462                 pthread_mutex_unlock(&delay_stats_mutex);
 463
 464                 if (trans_time_usec > streams[msg.stream].wc_delay) {
 465                         streams[msg.stream].wc_delay = trans_time_usec;
 466                 }
 467                 receivers[ac].received++;
 468
 469                 pthread_mutex_lock(&streams[msg.stream].mutex);
 470                 streams[msg.stream].received++;
 471                 pthread_mutex_unlock(&streams[msg.stream].mutex);
 472
 473                 /*if (trans_time_nsec < min_trans_time)
 474                         min_trans_time = trans_time_nsec;*/
 475                 /*printf("seqn= %lu tos= %d start= %lu(s).%lu(ns)"\
 476                          "stop= %lu(s).%lu(ns)\n trans_time = %lums\n",\
 477                          msg.seqn, msg.tos, send_timestamp.tv_sec,\
 478                          send_timestamp.tv_nsec,recv_timestamp.tv_sec,\
 479                          recv_timestamp.tv_nsec, trans_time_msec); */
 480         }
 481 out:
 482         sem_post(&sem_thread_finished);
 483         return NULL;
 484 }
 485
 486 /**
 487  * Send a packet.
 488  *
 489  * @return -1 in case of error, 1 in case of sucessfull send and 0
 490  *         when all buffers are full.
 491  */
 492 #ifndef WITH_FWP
 493 static inline int
 494 send_packet_native(struct stream* stream, union msg_buff* buff)
 495 {
 496         struct iovec  iov;
 497         struct msghdr msg;
 498
 499         iov.iov_base = buff;
 500         iov.iov_len = stream->packet_size;
 501         msg.msg_name = (void*)&stream->rem_addr;
 502         msg.msg_namelen = sizeof(stream->rem_addr);
 503         msg.msg_iov = &iov;
 504         msg.msg_iovlen = 1;
 505         msg.msg_flags = 0;
 506         msg.msg_control = &cmsg;
 507         msg.msg_controllen = cmsg_len;
 508
 509         int ret = 1;
 510
 511         while (sendmsg(ac_sockfd[stream->ac], &msg, 0) < 0) {
 512                 if (errno == EINTR) continue;
 513                 if (errno == EAGAIN) {
 514                         if (opt_wait_for_queue_is_full &&
 515                             !some_queue_is_full &&
 516                             /* We use mutex as atomic test and set */
 517                             (pthread_mutex_trylock(&queue_full_mutex) != EBUSY)) {
 518                                 some_queue_is_full = true;
 519                                 reset_statistics();
 520                         }
 521                         ret = 0;
 522                         break;
 523                 } else {
 524                         error(0, errno, "Error while sending");
 525                         ret = -1;
 526                         break;
 527                 }
 528         }
 529         return ret;
 530 }
 531 #else
 532 static inline int
 533 send_packet_fwp(struct stream* stream, union msg_buff* buff)
 534 {
 535         int ret = 0;
 536
 537         buff->msg.resp_port = htons(stream->resp_port);
 538         ret = frsh_send_async(stream->endpoint, buff, stream->packet_size);
 539         if (ret) {
 540                 char msg[1024];
 541                 frsh_strerror(ret, msg, sizeof(msg));
 542                 fprintf(stderr, "frsh_send error: %s\n", msg);
 543         }
 544         return (ret == 0) ? 0 : -1;
 545 }
 546 #endif
 547
 548 static inline void
 549 wait_for_next_send(struct stream* stream, struct timespec *last_send_time)
 550 {
 551         struct timespec time_to_wait, current_time, period, interval;
 552         unsigned period_usec = stream->period_usec;
 553
 554         /*           |~~~+~~~| jitter interval (width = 2*stream->jitter percentage from period)*/
 555         /* |-------------|     nominal period*/
 556         if (stream->jitter) {
 557                 period.tv_nsec = USEC_TO_NSEC*(period_usec*(100-stream->jitter)/100
 558                                                + rand() % (2*period_usec*stream->jitter/100));
 559         } else {
 560                 period.tv_nsec = USEC_TO_NSEC*(period_usec);
 561         }
 562         period.tv_sec = 0;
 563
 564         timespec_add(&time_to_wait, last_send_time, &period);
 565         clock_gettime(CLOCK_REALTIME,&current_time);
 566         timespec_sub(&interval,&time_to_wait,&current_time);
 567         nanosleep(&interval,NULL);
 568 }
 569
 570
 571 void* sender(void* arg)
 572 {
 573         union msg_buff buff;
 574         unsigned long int seqn;
 575         struct stream* stream = (struct stream*) arg;
 576         struct timespec ts;
 577         int ret;
 578
 579         if (!opt_gui) {
 580                 char stream_desc[100];
 581                 stream_to_text(stream_desc, sizeof(stream_desc), stream, 0);
 582                 printf("%s\n", stream_desc);
 583         }
 584         if (stream->bandwidth_bps == 0)
 585                 goto out;
 586
 587         seqn = 0;
 588
 589         block_signals();
 590         set_rt_prio(90-stream->ac);
 591
 592         while (!exit_flag) {
 593
 594 /*              buff.msg.seqn = seqn++; */
 595 /*              buff.msg.tos = ac_to_tos[stream->ac]; */
 596                 buff.msg.stream = stream-streams;
 597
 598                 clock_gettime(CLOCK_REALTIME,&ts);
 599                 buff.msg.send_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
 600
 601                 ret = send_packet(stream, &buff);
 602                 if (ret < 0) {
 603                         stopper();
 604                         goto out;
 605                 }
 606
 607                 pthread_mutex_lock(&stream->mutex);
 608                 stream->sent++;
 609                 if (ret > 0)
 610                         stream->really_sent++;
 611                 pthread_mutex_unlock(&stream->mutex);
 612
 613 #ifdef DEBUG
 614                 printf("%d", stream->ac);
 615                 fflush(stdout);
 616 #endif
 617
 618                 wait_for_next_send(stream, &ts);
 619         }
 620 out:
 621         sem_post(&sem_thread_finished);
 622         return NULL;
 623 }
 624
 625 #ifdef WITH_FWP
 626 static int negotiate_contract_for_stream_fwp(struct stream *stream)
 627 {
 628         frsh_contract_t contract;
 629         int ret;
 630         frsh_rel_time_t budget, period, deadline;
 631         frsh_signal_info_t si;
 632
 633         /* Contract for client->server stream */
 634         frsh_contract_init(&contract);
 635         frsh_contract_set_resource_and_label(&contract, FRSH_RT_NETWORK, FRSH_NETPF_FWP, NULL);
 636         frsh_network_bytes_to_budget(FRSH_NETPF_FWP, stream->packet_size, &budget);
 637         period = frsh_usec_to_rel_time(stream->period_usec);
 638         frsh_contract_set_basic_params(&contract, &budget, &period, FRSH_WT_BOUNDED, FRSH_CT_REGULAR);
 639         deadline = frsh_usec_to_rel_time(3*stream->period_usec);
 640         frsh_contract_set_timing_reqs(&contract, false, &deadline, 0, si, 0, si);
 641
 642         ret = frsh_contract_negotiate(&contract, &stream->vres);
 643         frsh_contract_destroy(&contract);
 644         if (ret != 0) {
 645                 stream->vres = NULL;
 646                 fprintf(stderr, "Send contract was not accepted\n");
 647                 return ret;
 648         }
 649
 650         /* Contract for server->client stream */
 651         /* TODO: Use group negotiation for these two contracts */
 652         frsh_contract_init(&contract);
 653         frsh_contract_set_resource_and_label(&contract, FRSH_RT_NETWORK, FRSH_NETPF_FWP, NULL);
 654         frsh_network_bytes_to_budget(FRSH_NETPF_FWP, stream->packet_size, &budget);
 655         period = frsh_usec_to_rel_time(stream->period_usec);
 656         frsh_contract_set_basic_params(&contract, &budget, &period, FRSH_WT_BOUNDED, FRSH_CT_DUMMY);
 657         deadline = frsh_usec_to_rel_time(3*stream->period_usec);
 658         frsh_contract_set_timing_reqs(&contract, false, &deadline, 0, si, 0, si);
 659
 660         ret = frsh_contract_negotiate(&contract, &stream->vres_rcv);
 661         frsh_contract_destroy(&contract);
 662         if (ret != 0) {
 663                 fprintf(stderr, "Receive contract was not accepted\n");
 664                 return ret;
 665         }
 666
 667         /* We don't use the vres at server, since the server doesn't
 668          * know the parameters. Instread, server uses plain
 669          * sockets. */
 670
 671         return ret;
 672 }
 673 #endif
 674
 675 #ifdef WITH_FWP
 676 static void create_stream_endpoint_fwp(struct stream *stream)
 677 {
 678 /*      fwp_endpoint_attr_t  attr; */
 679         int ret;
 680         struct hostent* ph;
 681         frsh_contract_t c;
 682         fres_block_fwp_sched *fwp_sched;
 683
 684         frsh_vres_get_contract(stream->vres, &c);
 685         fwp_sched = fres_contract_get_fwp_sched(c);
 686
 687         stream->ac = fwp_sched->ac_id;
 688
 689 /*      fwp_endpoint_attr_init(&attr); */
 690 /*      fwp_endpoint_attr_setreliability(&attr, FWP_EPOINT_BESTEFFORT); */
 691
 692         ph = gethostbyname(server_addr);
 693         if (ph && ph->h_addr_list[0]) {
 694                 struct in_addr *a = (struct in_addr *)(ph->h_addr_list[0]);
 695                 frsh_send_endpoint_protocol_info_t    spi = { NULL, 0 };
 696                 frsh_receive_endpoint_protocol_info_t rpi = { NULL, 0 };
 697                 frsh_endpoint_queueing_info_t qi = { .queue_size=0, .queue_policy=FRSH_QRP_OLDEST };
 698                 ret = frsh_send_endpoint_create(FRSH_NETPF_FWP, a->s_addr, BASE_PORT + stream->ac,
 699                                                 spi, &stream->endpoint);
 700                 if (ret < 0) error(1, errno, "frsh_send_endpoint_create()");
 701
 702                 ret = frsh_send_endpoint_bind(stream->vres, stream->endpoint);
 703                 if (ret != 0) error(1, errno, "frsh_send_endpoint_bind");
 704
 705                 ret = frsh_receive_endpoint_create(FRSH_NETPF_FWP, 0, qi, rpi,
 706                                                    &stream->resp_endpoint);
 707                 if (ret != 0) error(1, errno, "fwp_receive_endpoint_create");
 708
 709                 unsigned int port;
 710                 frsh_receive_endpoint_get_params(stream->resp_endpoint, NULL, &port, NULL, NULL);
 711                 stream->resp_port = port;
 712
 713                 ret = pthread_create(&stream->receiver.thread, NULL, receiver, (void*)stream);
 714                 if (ret) error(1, ret, "Error while creating receiver");
 715
 716                 stream->receiver.valid = true;
 717         }
 718         else {
 719                 error(1, errno, "gethostbyname(%s)", server_addr);
 720         }
 721
 722 }
 723 #else
 724 static void create_stream_endpoint_native(struct stream *stream)
 725 {
 726         struct hostent* ph;
 727
 728         memset(&stream->rem_addr,0, sizeof(stream->rem_addr));
 729
 730         stream->rem_addr.sin_family = AF_INET;
 731         ph = gethostbyname(server_addr);
 732         if (ph)
 733                 stream->rem_addr.sin_addr = *((struct in_addr *)ph->h_addr);
 734         else {
 735                 error(1, errno, "gethostbyname(%s)", server_addr);
 736         }
 737         stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac);
 738 }
 739 #endif
 740
 741 static inline void
 742 calc_stream_params(struct stream *stream)
 743 {
 744         int packet_size;
 745         unsigned period_usec;
 746         int bandwidth;
 747         int ret;
 748
 749         /* If some parameters are not set explicitely, use default values. */
 750         if (stream->bandwidth_bps < 0) stream->bandwidth_bps = opt_def_bandwidth * Kbit;
 751         if (stream->packet_size < 0) stream->packet_size = opt_packet_size;
 752         if (stream->period_usec < 0) stream->period_usec = opt_def_period_msec * MSEC_TO_USEC;
 753
 754         bandwidth = stream->bandwidth_bps;
 755
 756         /* Avoid arithmetic exception. Server thread will exit if
 757            stream->bandwidth_bps == 0. */
 758         if (bandwidth == 0) bandwidth = 1;
 759
 760         if (stream->packet_size) {
 761                 packet_size = stream->packet_size;
 762                 period_usec = SEC_TO_USEC*packet_size*8/bandwidth;
 763                 if (period_usec == 0) period_usec = 1;
 764         } else if (stream->period_usec) {
 765                 period_usec = stream->period_usec;
 766                 packet_size = (long long)bandwidth/8 * period_usec/SEC_TO_USEC;
 767         } else {
 768                 char buf[200];
 769                 stream_to_text(buf, sizeof(buf), stream, 0);
 770                 error(1, 0, "Neither packet size nor period was specified for a stream %s", buf);
 771         }
 772
 773         if (packet_size < sizeof(struct msg_t)) {
 774                 error(1, 0, "Packet size too small (min %zd)", sizeof(struct msg_t));
 775         }
 776
 777         stream->packet_size = packet_size;
 778         stream->period_usec = period_usec;
 779         stream->jitter = opt_jitter;
 780
 781         ret = negotiate_contract_for_stream(stream);
 782         if (ret == 0) {
 783                 create_stream_endpoint(stream);
 784         } else {
 785                 char buf[200];
 786                 stream_to_text(buf, sizeof(buf), stream, 0);
 787                 fprintf(stderr, "Contract hasn't been accepted:\n%s\n", buf);
 788                 stream->bandwidth_bps = 0;
 789                 some_contract_not_accepted = true;
 790         }
 791 }
 792
 793 /**
 794  * Parse -b parameter.
 795  *
 796  * @param params String to parse
 797  *
 798  * @return NULL in case of success, pointer to a problematic character
 799  *         on error.
 800  */
 801 char* parse_bandwidths(char *params)
 802 {
 803         struct stream *sp = &streams[nr_streams];
 804
 805         while (*params && nr_streams < MAX_STREAMS) {
 806                 char *ac_ids[AC_NUM] = { [AC_VO]="VO", [AC_VI]="VI", [AC_BE]="BE", [AC_BK]="BK" };
 807                 int i;
 808                 char *next_char;
 809
 810                 if (strlen(params) < 2)
 811                         return params;
 812                 for (i=0; i<AC_NUM; i++) {
 813                         if (strncmp(params, ac_ids[i], 2) == 0) {
 814                                 sp->ac = i;
 815                                 params+=strlen(ac_ids[i]);
 816                                 break;
 817                         }
 818                 }
 819                 if (i==AC_NUM)
 820                         return params;
 821
 822                 long bw;
 823                 if (*params == ':') {
 824                         params++;
 825
 826                         bw = strtol(params, &next_char, 10);
 827                         if (next_char == params)
 828                                 return params;
 829                         params = next_char;
 830                 } else
 831                         bw = -1;
 832
 833                 sp->bandwidth_bps = bw*Kbit;
 834
 835                 long period = 0;
 836                 long packet_size = 0;
 837                 if (*params == '@') {
 838                         params++;
 839                         period = strtol(params, &next_char, 10);
 840                         if (period == 0)
 841                                 return params;
 842                         params = next_char;
 843                 }
 844                 else {
 845                         if (*params == '/') {
 846                                 params++;
 847                                 packet_size = strtol(params, &next_char, 10);
 848                                 if (packet_size == 0)
 849                                         return params;
 850                                 params = next_char;
 851                         } else {
 852                                 packet_size = -1;
 853                                 period = -1;
 854                         }
 855                 }
 856                 sp->period_usec = period*MSEC_TO_USEC;
 857                 sp->packet_size = packet_size;
 858
 859
 860
 861                 if (*params != '\0' && *params != ',')
 862                         return params;
 863                 nr_streams++;
 864                 sp++;
 865                 if (*params == ',')
 866                         params++;
 867         }
 868         return NULL;
 869 }
 870
 871 #ifdef WITH_FWP
 872 void wait_for_all_threads_to_finish_fwp(void)
 873 {
 874         int i;
 875         /* wait for all threads to finish */
 876         for (i=0; i < 2*nr_streams; i++) {
 877                 sem_wait(&sem_thread_finished);
 878         }
 879 }
 880 #else
 881 void wait_for_all_threads_to_finish_native(void)
 882 {
 883         int i;
 884         /* Wait for all threads to finish */
 885         for (i=0; i < nr_streams + AC_NUM; i++) {
 886                 sem_wait(&sem_thread_finished);
 887         }
 888 }
 889 #endif
 890
 891 WINDOW *logwin;
 892
 893 #if 0
 894 struct log_params {
 895         ul_log_domain_t *domain;
 896         int level;
 897         const char *format;
 898         va_list ap;
 899 };
 900
 901
 902 int locked_log(WINDOW *logwin, void *arg)
 903 {
 904         struct log_params *p = arg;
 905         if(!(p->level&UL_LOGL_CONT)) {
 906                 p->level&=UL_LOGL_MASK;
 907                 if(p->level)
 908                         wprintw(logwin,"<%d>", p->level);
 909                 if(p->domain && p->domain->name)
 910                         wprintw(logwin,"%s: ",p->domain->name);
 911         }
 912         vwprintw(logwin, p->format, p->ap);
 913         wnoutrefresh(logwin);
 914         return 0;
 915 }
 916
 917 void
 918 wclient_log_fnc(ul_log_domain_t *domain, int level,
 919                 const char *format, va_list ap)
 920 {
 921         struct log_params p = {
 922                 .domain = domain,
 923                 .level = level,
 924                 .format = format,
 925         };
 926         va_copy(p.ap, ap);
 927         va_end(ap);
 928
 929         use_window(logwin, locked_log, (void*)&p);
 930 }
 931 #endif
 932
 933
 934 void init_gui()
 935 {
 936         if (opt_gui) {
 937                 initscr();
 938                 cbreak();
 939                 noecho();
 940 /*              nonl(); */
 941 /*              intrflush(stdscr, FALSE); */
 942 /*              keypad(stdscr, TRUE); */
 943
 944                 logwin = newwin(0, 0, LINES/2, 0);
 945                 if (logwin) {
 946                         scrollok(logwin, TRUE);
 947 /*              ul_log_redir(wclient_log_fnc, 0); */
 948                 }
 949         }
 950 }
 951
 952 void end_gui()
 953 {
 954         if (opt_gui) {
 955                 endwin();
 956                 if (logwin) {
 957 /*              ul_log_redir(NULL, 0); */
 958                 }
 959         }
 960 }
 961
 962
 963 #define addfield(title, format, ...)                                    \
 964         move(y, x);                                                     \
 965         x+=strlen(title)+1;                                             \
 966         if (i == 0) addstr(title);                                      \
 967         else {                                                          \
 968                 snprintf(str, sizeof(str), format, __VA_ARGS__);        \
 969                 addstr(str);                                            \
 970         }
 971
 972 void print_status_gui(int seconds)
 973 {
 974         int i;
 975         char str[200], s1[20];
 976         int x = 0, y;
 977         struct stream *s = NULL;
 978
 979         for (i = 0; i <= nr_streams; i++) {
 980                 if (i>0) s = &streams[i-1];
 981                 y=i;
 982                 x=0;
 983                 addfield("Stream", "%d", i);
 984                 addfield("Bandwidth", "%s", bandwidth_to_text(s1, s->bandwidth_bps));
 985                 addfield("Packet size", "%d bytes", s->packet_size);
 986                 addfield("Period   ", "%s", usec_to_text(s1, s->period_usec));
 987                 addfield("AC   ", "%s", ac_to_text[s->ac]);
 988                 addfield("Worst-case delay", "%s", usec_to_text(s1, s->wc_delay));
 989                 addfield("Received responses", "%lld", s->received);
 990         }
 991         wnoutrefresh(stdscr);
 992         doupdate();
 993 }
 994
 995 void print_status_nogui(int seconds)
 996 {
 997         int ac;
 998         fprintf(stderr, "\r%3ds", seconds);
 999         for (ac = 0; ac < AC_NUM; ac++) {
1000                 int delta = receivers[ac].received - receivers[ac].last_received;
1001                 receivers[ac].last_received = receivers[ac].received;
1002                 fprintf(stderr, " %s %5d %4d/s", ac_to_text[ac], receivers[ac].received, delta);
1003         }
1004         fflush(stderr);
1005 }
1006
1007 #ifdef WITH_FWP
1008 int print_log_domain(ul_log_domain_t *domain, void *context)
1009 {
1010         printf("%s = %d\n", domain->name, domain->level);
1011         return 0;
1012 }
1013 #endif
1014 int main(int argc, char *argv[])
1015 {
1016         int i, rc, frames, seconds;
1017         pthread_attr_t attr;
1018         pthread_t thread;
1019         char opt;
1020
1021
1022         while ((opt = getopt(argc, argv, "B:b:C:c:Gg:I:j:l:o:qQ:s:T:")) != -1) {
1023                 switch (opt) {
1024                         case 'B':
1025                                 opt_def_bandwidth = atoi(optarg);
1026                                 break;
1027                         case 'b': {
1028                                 char *errpos;
1029                                 errpos = parse_bandwidths(optarg);
1030                                 if (errpos != NULL) {
1031                                         if (*errpos == '\0')
1032                                                 error(1, 0, "Bandwidth parse error - string to short");
1033                                         else
1034                                                 error(1, 0, "Bandwidth parse error at '%s'", errpos);
1035                                 }
1036                                 break;
1037                         }
1038                         case 'C':
1039                                 opt_comment = optarg;
1040                                 break;
1041                         case 'c':
1042                                 opt_count_sec = atoi(optarg);
1043                                 break;
1044                         case 'G':
1045                                 opt_gui = true;
1046                                 break;
1047                         case 'g':
1048                                 opt_granularity_usec = atoi(optarg);
1049                                 if (opt_granularity_usec < MIN_GRANULARITY) {
1050                                         error(1, 0, "Granulatiry too small (min %d)", MIN_GRANULARITY);
1051                                 }
1052                                 break;
1053                         case 'I':
1054                                 opt_interface = optarg;
1055                                 break;
1056                         case 'j':
1057                                 #ifdef WITH_FWP
1058                                 error(1, 0, "-j is not allowd when compiled with FWP");
1059                                 #else
1060                                 opt_jitter = atoi(optarg);
1061                                 #endif
1062                                 break;
1063 #ifdef WITH_FWP
1064                         case 'l':
1065                                 if (*optarg == '?') {
1066                                         ul_logreg_for_each_domain(print_log_domain, NULL);
1067                                         exit(0);
1068                                 }
1069                                 {
1070                                         int ret;
1071                                         ret = ul_log_domain_arg2levels(optarg);
1072                                         if (ret)
1073                                                 error(1, EINVAL, "Error parsing -l argument at char %d\n", ret);
1074                                 }
1075                                 break;
1076 #endif
1077                         case 'o':
1078                                 opt_output = optarg;
1079                                 break;
1080                         case 'Q':
1081                                 opt_send_buf_size = atoi(optarg);
1082                                 break;
1083                         case 'q':
1084                                 opt_wait_for_queue_is_full = true;
1085                                 break;
1086                         case 's':
1087                                 opt_packet_size = atoi(optarg);
1088                                 break;
1089                         case 'T':
1090                                 opt_def_period_msec = atoi(optarg);
1091                                 break;
1092                         default:
1093                                 fprintf(stderr, "Usage: %s [ options ] server_addr\n\n", argv[0]);
1094                                 fprintf(stderr, "Options:\n");
1095                                 fprintf(stderr, "    -B  default bandwidth for -b option [kbit]\n");
1096                                 fprintf(stderr, "    -b  bandwidth of streams (VO|VI|BE|BK)[:<kbit>][@<msec> or /<bytes>][,...]\n");
1097                                 fprintf(stderr, "    -C  comment (added to header)\n");
1098                                 fprintf(stderr, "    -c  count (number of seconds to run)\n");
1099                                 fprintf(stderr, "    -g  histogram granularity [usec]\n");
1100                                 fprintf(stderr, "    -G  show status in textual GUI\n");
1101                                 fprintf(stderr, "    -I  <interface> send packets from this interface\n");
1102 #ifdef WITH_FWP
1103                                 fprintf(stderr, "    -l  <loglevel> uLUt logging levels\n");
1104 #endif
1105                                 fprintf(stderr, "    -j  send jitter (0-100) [%%]\n");
1106                                 fprintf(stderr, "    -o  output filename (.dat will be appended)\n");
1107                                 fprintf(stderr, "    -q  gather statistics only after some queue becomes full\n");
1108                                 fprintf(stderr, "    -Q  <bytes> set size for socket send buffers\n");
1109                                 fprintf(stderr, "    -s  size of data payload in packets [bytes] (default: %d)\n", opt_packet_size);
1110                                 fprintf(stderr, "    -T  default period for -b option [msec]\n");
1111                                 exit(1);
1112                 }
1113         }
1114         if (opt_packet_size && opt_def_period_msec) {
1115                 error(1, 0, "Error: Nonzero -T and -s can't be used together!");
1116         }
1117
1118         if (optind < argc) {
1119                 server_addr = argv[optind];
1120         } else {
1121                 error(1, 0, "Expected server address argument");
1122         }
1123
1124         if (nr_streams == 0)
1125                 parse_bandwidths("BE");
1126
1127         pthread_attr_init(&attr);
1128
1129         snprintf(logfname, sizeof(logfname), "%s.dat", opt_output);
1130
1131         if ((logfd = fopen(logfname,"w+")) == NULL) {
1132                 error(1, errno ,"Can not open %s", logfname);
1133         }
1134         if (signal(SIGTERM, stopper) == SIG_ERR) {
1135                 error(1, errno, "Error in signal registration");
1136         }
1137
1138         if (signal(SIGINT, stopper) == SIG_ERR) {
1139                 error(1, errno, "Signal handler registration error");
1140         }
1141
1142         struct sigaction sa;
1143         sa.sa_handler = empty_handler;
1144         sa.sa_flags = 0;        /* don't restart syscalls */
1145
1146         if (sigaction(SIGUSR1, &sa, NULL) < 0) {
1147                 error(1, errno, "sigaction error");
1148         }
1149
1150         sem_init(&sem_thread_finished, 0, 0);
1151
1152         reset_statistics();
1153
1154 #ifdef WITH_FWP
1155         //ul_log_domain_arg2levels("6");
1156         rc = frsh_init();
1157         if (rc != 0) {
1158                 error(1, errno, "FWP initialization failed");
1159         }
1160 #else
1161         intptr_t ac;
1162         /* create four receivers each per AC */
1163         for (ac = AC_NUM - 1; ac >= 0; ac--) {
1164                 ac_sockfd[ac] = create_ac_socket(ac);
1165                 if (ac_sockfd[ac] < 0) {
1166                         return 1;
1167                 }
1168                 rc = pthread_create(&receivers[ac].thread, &attr, receiver, (void*) ac);
1169                 if (rc) {
1170                         error(1, rc, "Error while creating receiver");
1171                 }
1172                 receivers[ac].valid = true;
1173         }
1174 #endif
1175
1176
1177         if (opt_interface) {
1178                 struct ifreq ifr;
1179
1180                 memset(&ifr, 0, sizeof(ifr));
1181                 strncpy(ifr.ifr_name, opt_interface, IFNAMSIZ-1);
1182                 if (ioctl(ac_sockfd[AC_VO], SIOCGIFINDEX, &ifr) < 0) {
1183                         error(1, 0, "unknown iface %s", opt_interface);
1184                 }
1185                 cmsg.ipi.ipi_ifindex = ifr.ifr_ifindex;
1186                 cmsg_len = sizeof(cmsg);
1187         }
1188         /* create sendpoints */
1189         for (i = 0; i < nr_streams; i++) {
1190                 struct stream *s = &streams[i];
1191                 pthread_mutex_init(&s->mutex, NULL);
1192                 calc_stream_params(s);
1193                 rc = pthread_create(&thread, &attr, sender, (void*) s);
1194                 if (rc) error(1, rc, "Error while creating sender");
1195         }
1196
1197         if (some_contract_not_accepted) {
1198                 stopper();
1199         } else {
1200                 init_gui();
1201
1202                 seconds = 1;
1203                 frames=0;
1204                 while (!exit_flag) {
1205                         if (opt_gui) {
1206                                 usleep(40000);
1207                                 frames++;
1208                                 if (frames>=25) {
1209                                         seconds++;
1210                                         frames = 0;
1211                                 }
1212                                 print_status_gui(seconds);
1213                         } else {
1214                                 sleep(1);
1215                                 seconds++;
1216                                 print_status_nogui(seconds);
1217                         }
1218
1219                         if (seconds == opt_count_sec)
1220                                 stopper();
1221                 }
1222         }
1223
1224         end_gui();
1225
1226         fprintf(stderr, "\nWaiting for threads to finish\n");
1227         wait_for_all_threads_to_finish();
1228
1229 #ifdef WITH_FWP
1230         for (i=0; i < nr_streams; i++) {
1231                 if (streams[i].vres)
1232                         frsh_contract_cancel(streams[i].vres);
1233                 if (streams[i].vres_rcv)
1234                         frsh_contract_cancel(streams[i].vres_rcv);
1235         }
1236 #endif
1237
1238         struct timespec ts;
1239         uint64_t end_timestamp, measure_length;
1240         clock_gettime(CLOCK_REALTIME,&ts);
1241         end_timestamp = ts.tv_sec*1000000000LL+ts.tv_nsec;
1242         measure_length = end_timestamp - reset_timestamp;
1243
1244         save_results(argc, argv, measure_length/1000);
1245
1246         return 0;
1247 }