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         size_t mlen;
 401
 402         mlen = frsh_receive_sync(stream->resp_endpoint, msg, sizeof(*msg), &mlen, NULL);
 403         return mlen;
 404 }
 405 #endif
 406
 407 void* receiver(void* arg)
 408 {
 409         struct msg_t    msg;
 410         long long int trans_time_usec, client_to_server_usec, server_to_client_usec;
 411         long long int min_trans_time;
 412         struct timespec ts;
 413         uint64_t send_timestamp, server_timestamp, recv_timestamp;
 414         int     mlen;
 415         intptr_t ac;
 416
 417         min_trans_time = ~0;
 418
 419         block_signals();
 420         set_rt_prio(99);
 421
 422         while (!exit_flag) {
 423 #ifdef WITH_FWP
 424                 struct stream *stream = arg;
 425                 ac = stream->ac;
 426                 mlen = recv_packet_fwp(stream, &msg);
 427 #else
 428                 ac = (intptr_t)arg;
 429                 mlen = recv_packet_native(ac, &msg);
 430 #endif
 431                 if (mlen < 0) {
 432                         if (errno != EINTR)
 433                                 error(0, errno, "receive_packet error");
 434                         goto out;
 435                 }
 436                 clock_gettime(CLOCK_REALTIME,&ts);
 437                 recv_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
 438                 send_timestamp = msg.send_timestamp;
 439                 server_timestamp = msg.sendback_timestamp;
 440
 441                 /* Check whether this message was sent after reset_statistics() */
 442
 443                 if (send_timestamp < reset_timestamp) {
 444                         continue; /* If so, don't count it */
 445                 }
 446
 447                 trans_time_usec = (recv_timestamp - send_timestamp) / 2 / 1000;
 448                 client_to_server_usec = (server_timestamp - send_timestamp) / 1000;
 449                 server_to_client_usec = (recv_timestamp - server_timestamp) / 1000;
 450
 451                 pthread_mutex_lock(&delay_stats_mutex);
 452                 if (trans_time_usec < MAX_DELAY_US && trans_time_usec >= 0) {
 453                         delay_stats[ac][trans_time_usec/opt_granularity_usec].csc++;
 454                 }
 455                 if (client_to_server_usec < MAX_DELAY_US && client_to_server_usec >= 0) {
 456                         delay_stats[ac][client_to_server_usec/opt_granularity_usec].cs++;
 457                 }
 458                 if (server_to_client_usec < MAX_DELAY_US && server_to_client_usec >= 0) {
 459                         delay_stats[ac][server_to_client_usec/opt_granularity_usec].sc++;
 460                 }
 461                 pthread_mutex_unlock(&delay_stats_mutex);
 462
 463                 if (trans_time_usec > streams[msg.stream].wc_delay) {
 464                         streams[msg.stream].wc_delay = trans_time_usec;
 465                 }
 466                 receivers[ac].received++;
 467
 468                 pthread_mutex_lock(&streams[msg.stream].mutex);
 469                 streams[msg.stream].received++;
 470                 pthread_mutex_unlock(&streams[msg.stream].mutex);
 471
 472                 /*if (trans_time_nsec < min_trans_time)
 473                         min_trans_time = trans_time_nsec;*/
 474                 /*printf("seqn= %lu tos= %d start= %lu(s).%lu(ns)"\
 475                          "stop= %lu(s).%lu(ns)\n trans_time = %lums\n",\
 476                          msg.seqn, msg.tos, send_timestamp.tv_sec,\
 477                          send_timestamp.tv_nsec,recv_timestamp.tv_sec,\
 478                          recv_timestamp.tv_nsec, trans_time_msec); */
 479         }
 480 out:
 481         sem_post(&sem_thread_finished);
 482         return NULL;
 483 }
 484
 485 /**
 486  * Send a packet.
 487  *
 488  * @return -1 in case of error, 1 in case of sucessfull send and 0
 489  *         when all buffers are full.
 490  */
 491 #ifndef WITH_FWP
 492 static inline int
 493 send_packet_native(struct stream* stream, union msg_buff* buff)
 494 {
 495         struct iovec  iov;
 496         struct msghdr msg;
 497
 498         iov.iov_base = buff;
 499         iov.iov_len = stream->packet_size;
 500         msg.msg_name = (void*)&stream->rem_addr;
 501         msg.msg_namelen = sizeof(stream->rem_addr);
 502         msg.msg_iov = &iov;
 503         msg.msg_iovlen = 1;
 504         msg.msg_flags = 0;
 505         msg.msg_control = &cmsg;
 506         msg.msg_controllen = cmsg_len;
 507
 508         int ret = 1;
 509
 510         while (sendmsg(ac_sockfd[stream->ac], &msg, 0) < 0) {
 511                 if (errno == EINTR) continue;
 512                 if (errno == EAGAIN) {
 513                         if (opt_wait_for_queue_is_full &&
 514                             !some_queue_is_full &&
 515                             /* We use mutex as atomic test and set */
 516                             (pthread_mutex_trylock(&queue_full_mutex) != EBUSY)) {
 517                                 some_queue_is_full = true;
 518                                 reset_statistics();
 519                         }
 520                         ret = 0;
 521                         break;
 522                 } else {
 523                         error(0, errno, "Error while sending");
 524                         ret = -1;
 525                         break;
 526                 }
 527         }
 528         return ret;
 529 }
 530 #else
 531 static inline int
 532 send_packet_fwp(struct stream* stream, union msg_buff* buff)
 533 {
 534         int ret = 0;
 535
 536         buff->msg.resp_port = htons(stream->resp_port);
 537         ret = frsh_send_async(stream->endpoint, buff, stream->packet_size);
 538         if (ret) {
 539                 char msg[1024];
 540                 frsh_strerror(ret, msg, sizeof(msg));
 541                 fprintf(stderr, "frsh_send error: %s\n", msg);
 542         }
 543         return (ret == 0) ? 0 : -1;
 544 }
 545 #endif
 546
 547 static inline void
 548 wait_for_next_send(struct stream* stream, struct timespec *last_send_time)
 549 {
 550         struct timespec time_to_wait, current_time, period, interval;
 551         unsigned period_usec = stream->period_usec;
 552
 553         /*           |~~~+~~~| jitter interval (width = 2*stream->jitter percentage from period)*/
 554         /* |-------------|     nominal period*/
 555         if (stream->jitter) {
 556                 period.tv_nsec = USEC_TO_NSEC*(period_usec*(100-stream->jitter)/100
 557                                                + rand() % (2*period_usec*stream->jitter/100));
 558         } else {
 559                 period.tv_nsec = USEC_TO_NSEC*(period_usec);
 560         }
 561         period.tv_sec = 0;
 562
 563         timespec_add(&time_to_wait, last_send_time, &period);
 564         clock_gettime(CLOCK_REALTIME,&current_time);
 565         timespec_sub(&interval,&time_to_wait,&current_time);
 566         nanosleep(&interval,NULL);
 567 }
 568
 569
 570 void* sender(void* arg)
 571 {
 572         union msg_buff buff;
 573         unsigned long int seqn;
 574         struct stream* stream = (struct stream*) arg;
 575         struct timespec ts;
 576         int ret;
 577
 578         if (!opt_gui) {
 579                 char stream_desc[100];
 580                 stream_to_text(stream_desc, sizeof(stream_desc), stream, 0);
 581                 printf("%s\n", stream_desc);
 582         }
 583         if (stream->bandwidth_bps == 0)
 584                 goto out;
 585
 586         seqn = 0;
 587
 588         block_signals();
 589         set_rt_prio(90-stream->ac);
 590
 591         while (!exit_flag) {
 592
 593 /*              buff.msg.seqn = seqn++; */
 594 /*              buff.msg.tos = ac_to_tos[stream->ac]; */
 595                 buff.msg.stream = stream-streams;
 596
 597                 clock_gettime(CLOCK_REALTIME,&ts);
 598                 buff.msg.send_timestamp = ts.tv_sec*1000000000LL + ts.tv_nsec;
 599
 600                 ret = send_packet(stream, &buff);
 601                 if (ret < 0) {
 602                         stopper();
 603                         goto out;
 604                 }
 605
 606                 pthread_mutex_lock(&stream->mutex);
 607                 stream->sent++;
 608                 if (ret > 0)
 609                         stream->really_sent++;
 610                 pthread_mutex_unlock(&stream->mutex);
 611
 612 #ifdef DEBUG
 613                 printf("%d", stream->ac);
 614                 fflush(stdout);
 615 #endif
 616
 617                 wait_for_next_send(stream, &ts);
 618         }
 619 out:
 620         sem_post(&sem_thread_finished);
 621         return NULL;
 622 }
 623
 624 #ifdef WITH_FWP
 625 static int negotiate_contract_for_stream_fwp(struct stream *stream)
 626 {
 627         frsh_contract_t contract;
 628         int ret;
 629         frsh_rel_time_t budget, period, deadline;
 630         frsh_signal_info_t si;
 631
 632         /* Contract for client->server stream */
 633         frsh_contract_init(&contract);
 634         frsh_contract_set_resource_and_label(&contract, FRSH_RT_NETWORK, FRSH_NETPF_FWP, NULL);
 635         frsh_network_bytes_to_budget(FRSH_NETPF_FWP, stream->packet_size, &budget);
 636         period = frsh_usec_to_rel_time(stream->period_usec);
 637         frsh_contract_set_basic_params(&contract, &budget, &period, FRSH_WT_BOUNDED, FRSH_CT_REGULAR);
 638         deadline = frsh_usec_to_rel_time(3*stream->period_usec);
 639         frsh_contract_set_timing_reqs(&contract, false, &deadline, 0, si, 0, si);
 640
 641         ret = frsh_contract_negotiate(&contract, &stream->vres);
 642         frsh_contract_destroy(&contract);
 643         if (ret != 0) {
 644                 stream->vres = NULL;
 645                 fprintf(stderr, "Send contract was not accepted\n");
 646                 return ret;
 647         }
 648
 649         /* Contract for server->client stream */
 650         /* TODO: Use group negotiation for these two contracts */
 651         frsh_contract_init(&contract);
 652         frsh_contract_set_resource_and_label(&contract, FRSH_RT_NETWORK, FRSH_NETPF_FWP, NULL);
 653         frsh_network_bytes_to_budget(FRSH_NETPF_FWP, stream->packet_size, &budget);
 654         period = frsh_usec_to_rel_time(stream->period_usec);
 655         frsh_contract_set_basic_params(&contract, &budget, &period, FRSH_WT_BOUNDED, FRSH_CT_DUMMY);
 656         deadline = frsh_usec_to_rel_time(3*stream->period_usec);
 657         frsh_contract_set_timing_reqs(&contract, false, &deadline, 0, si, 0, si);
 658
 659         ret = frsh_contract_negotiate(&contract, &stream->vres_rcv);
 660         frsh_contract_destroy(&contract);
 661         if (ret != 0) {
 662                 fprintf(stderr, "Receive contract was not accepted\n");
 663                 return ret;
 664         }
 665
 666         /* We don't use the vres at server, since the server doesn't
 667          * know the parameters. Instread, server uses plain
 668          * sockets. */
 669
 670         return ret;
 671 }
 672 #endif
 673
 674 #ifdef WITH_FWP
 675 static void create_stream_endpoint_fwp(struct stream *stream)
 676 {
 677 /*      fwp_endpoint_attr_t  attr; */
 678         int ret;
 679         struct hostent* ph;
 680         frsh_contract_t c;
 681         fres_block_fwp_sched *fwp_sched;
 682
 683         frsh_vres_get_contract(stream->vres, &c);
 684         fwp_sched = fres_contract_get_fwp_sched(c);
 685
 686         stream->ac = fwp_sched->ac_id;
 687
 688 /*      fwp_endpoint_attr_init(&attr); */
 689 /*      fwp_endpoint_attr_setreliability(&attr, FWP_EPOINT_BESTEFFORT); */
 690
 691         ph = gethostbyname(server_addr);
 692         if (ph && ph->h_addr_list[0]) {
 693                 struct in_addr *a = (struct in_addr *)(ph->h_addr_list[0]);
 694                 frsh_send_endpoint_protocol_info_t    spi = { NULL, 0 };
 695                 frsh_receive_endpoint_protocol_info_t rpi = { NULL, 0 };
 696                 frsh_endpoint_queueing_info_t qi = { .queue_size=0, .queue_policy=FRSH_QRP_OLDEST };
 697                 ret = frsh_send_endpoint_create(FRSH_NETPF_FWP, a->s_addr, BASE_PORT + stream->ac,
 698                                                 spi, &stream->endpoint);
 699                 if (ret < 0) error(1, errno, "frsh_send_endpoint_create()");
 700
 701                 ret = frsh_send_endpoint_bind(stream->vres, stream->endpoint);
 702                 if (ret != 0) error(1, errno, "frsh_send_endpoint_bind");
 703
 704                 ret = frsh_receive_endpoint_create(FRSH_NETPF_FWP, 0, qi, rpi,
 705                                                    &stream->resp_endpoint);
 706                 if (ret != 0) error(1, errno, "fwp_receive_endpoint_create");
 707
 708                 unsigned int port;
 709                 frsh_receive_endpoint_get_params(stream->resp_endpoint, NULL, &port, NULL, NULL);
 710                 stream->resp_port = port;
 711
 712                 ret = pthread_create(&stream->receiver.thread, NULL, receiver, (void*)stream);
 713                 if (ret) error(1, ret, "Error while creating receiver");
 714
 715                 stream->receiver.valid = true;
 716         }
 717         else {
 718                 error(1, errno, "gethostbyname(%s)", server_addr);
 719         }
 720
 721 }
 722 #else
 723 static void create_stream_endpoint_native(struct stream *stream)
 724 {
 725         struct hostent* ph;
 726
 727         memset(&stream->rem_addr,0, sizeof(stream->rem_addr));
 728
 729         stream->rem_addr.sin_family = AF_INET;
 730         ph = gethostbyname(server_addr);
 731         if (ph)
 732                 stream->rem_addr.sin_addr = *((struct in_addr *)ph->h_addr);
 733         else {
 734                 error(1, errno, "gethostbyname(%s)", server_addr);
 735         }
 736         stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac);
 737 }
 738 #endif
 739
 740 static inline void
 741 calc_stream_params(struct stream *stream)
 742 {
 743         int packet_size;
 744         unsigned period_usec;
 745         int bandwidth;
 746         int ret;
 747
 748         /* If some parameters are not set explicitely, use default values. */
 749         if (stream->bandwidth_bps < 0) stream->bandwidth_bps = opt_def_bandwidth * Kbit;
 750         if (stream->packet_size < 0) stream->packet_size = opt_packet_size;
 751         if (stream->period_usec < 0) stream->period_usec = opt_def_period_msec * MSEC_TO_USEC;
 752
 753         bandwidth = stream->bandwidth_bps;
 754
 755         /* Avoid arithmetic exception. Server thread will exit if
 756            stream->bandwidth_bps == 0. */
 757         if (bandwidth == 0) bandwidth = 1;
 758
 759         if (stream->packet_size) {
 760                 packet_size = stream->packet_size;
 761                 period_usec = SEC_TO_USEC*packet_size*8/bandwidth;
 762                 if (period_usec == 0) period_usec = 1;
 763         } else if (stream->period_usec) {
 764                 period_usec = stream->period_usec;
 765                 packet_size = (long long)bandwidth/8 * period_usec/SEC_TO_USEC;
 766         } else {
 767                 char buf[200];
 768                 stream_to_text(buf, sizeof(buf), stream, 0);
 769                 error(1, 0, "Neither packet size nor period was specified for a stream %s", buf);
 770         }
 771
 772         if (packet_size < sizeof(struct msg_t)) {
 773                 error(1, 0, "Packet size too small (min %zd)", sizeof(struct msg_t));
 774         }
 775
 776         stream->packet_size = packet_size;
 777         stream->period_usec = period_usec;
 778         stream->jitter = opt_jitter;
 779
 780         ret = negotiate_contract_for_stream(stream);
 781         if (ret == 0) {
 782                 create_stream_endpoint(stream);
 783         } else {
 784                 char buf[200];
 785                 stream_to_text(buf, sizeof(buf), stream, 0);
 786                 fprintf(stderr, "Contract hasn't been accepted:\n%s\n", buf);
 787                 stream->bandwidth_bps = 0;
 788                 some_contract_not_accepted = true;
 789         }
 790 }
 791
 792 /**
 793  * Parse -b parameter.
 794  *
 795  * @param params String to parse
 796  *
 797  * @return NULL in case of success, pointer to a problematic character
 798  *         on error.
 799  */
 800 char* parse_bandwidths(char *params)
 801 {
 802         struct stream *sp = &streams[nr_streams];
 803
 804         while (*params && nr_streams < MAX_STREAMS) {
 805                 char *ac_ids[AC_NUM] = { [AC_VO]="VO", [AC_VI]="VI", [AC_BE]="BE", [AC_BK]="BK" };
 806                 int i;
 807                 char *next_char;
 808
 809                 if (strlen(params) < 2)
 810                         return params;
 811                 for (i=0; i<AC_NUM; i++) {
 812                         if (strncmp(params, ac_ids[i], 2) == 0) {
 813                                 sp->ac = i;
 814                                 params+=strlen(ac_ids[i]);
 815                                 break;
 816                         }
 817                 }
 818                 if (i==AC_NUM)
 819                         return params;
 820
 821                 long bw;
 822                 if (*params == ':') {
 823                         params++;
 824
 825                         bw = strtol(params, &next_char, 10);
 826                         if (next_char == params)
 827                                 return params;
 828                         params = next_char;
 829                 } else
 830                         bw = -1;
 831
 832                 sp->bandwidth_bps = bw*Kbit;
 833
 834                 long period = 0;
 835                 long packet_size = 0;
 836                 if (*params == '@') {
 837                         params++;
 838                         period = strtol(params, &next_char, 10);
 839                         if (period == 0)
 840                                 return params;
 841                         params = next_char;
 842                 }
 843                 else {
 844                         if (*params == '/') {
 845                                 params++;
 846                                 packet_size = strtol(params, &next_char, 10);
 847                                 if (packet_size == 0)
 848                                         return params;
 849                                 params = next_char;
 850                         } else {
 851                                 packet_size = -1;
 852                                 period = -1;
 853                         }
 854                 }
 855                 sp->period_usec = period*MSEC_TO_USEC;
 856                 sp->packet_size = packet_size;
 857
 858
 859
 860                 if (*params != '\0' && *params != ',')
 861                         return params;
 862                 nr_streams++;
 863                 sp++;
 864                 if (*params == ',')
 865                         params++;
 866         }
 867         return NULL;
 868 }
 869
 870 #ifdef WITH_FWP
 871 void wait_for_all_threads_to_finish_fwp(void)
 872 {
 873         int i;
 874         /* wait for all threads to finish */
 875         for (i=0; i < 2*nr_streams; i++) {
 876                 sem_wait(&sem_thread_finished);
 877         }
 878 }
 879 #else
 880 void wait_for_all_threads_to_finish_native(void)
 881 {
 882         int i;
 883         /* Wait for all threads to finish */
 884         for (i=0; i < nr_streams + AC_NUM; i++) {
 885                 sem_wait(&sem_thread_finished);
 886         }
 887 }
 888 #endif
 889
 890 WINDOW *logwin;
 891
 892 #if 0
 893 struct log_params {
 894         ul_log_domain_t *domain;
 895         int level;
 896         const char *format;
 897         va_list ap;
 898 };
 899
 900
 901 int locked_log(WINDOW *logwin, void *arg)
 902 {
 903         struct log_params *p = arg;
 904         if(!(p->level&UL_LOGL_CONT)) {
 905                 p->level&=UL_LOGL_MASK;
 906                 if(p->level)
 907                         wprintw(logwin,"<%d>", p->level);
 908                 if(p->domain && p->domain->name)
 909                         wprintw(logwin,"%s: ",p->domain->name);
 910         }
 911         vwprintw(logwin, p->format, p->ap);
 912         wnoutrefresh(logwin);
 913         return 0;
 914 }
 915
 916 void
 917 wclient_log_fnc(ul_log_domain_t *domain, int level,
 918                 const char *format, va_list ap)
 919 {
 920         struct log_params p = {
 921                 .domain = domain,
 922                 .level = level,
 923                 .format = format,
 924         };
 925         va_copy(p.ap, ap);
 926         va_end(ap);
 927
 928         use_window(logwin, locked_log, (void*)&p);
 929 }
 930 #endif
 931
 932
 933 void init_gui()
 934 {
 935         if (opt_gui) {
 936                 initscr();
 937                 cbreak();
 938                 noecho();
 939 /*              nonl(); */
 940 /*              intrflush(stdscr, FALSE); */
 941 /*              keypad(stdscr, TRUE); */
 942
 943                 logwin = newwin(0, 0, LINES/2, 0);
 944                 if (logwin) {
 945                         scrollok(logwin, TRUE);
 946 /*              ul_log_redir(wclient_log_fnc, 0); */
 947                 }
 948         }
 949 }
 950
 951 void end_gui()
 952 {
 953         if (opt_gui) {
 954                 endwin();
 955                 if (logwin) {
 956 /*              ul_log_redir(NULL, 0); */
 957                 }
 958         }
 959 }
 960
 961
 962 #define addfield(title, format, ...)                                    \
 963         move(y, x);                                                     \
 964         x+=strlen(title)+1;                                             \
 965         if (i == 0) addstr(title);                                      \
 966         else {                                                          \
 967                 snprintf(str, sizeof(str), format, __VA_ARGS__);        \
 968                 addstr(str);                                            \
 969         }
 970
 971 void print_status_gui(int seconds)
 972 {
 973         int i;
 974         char str[200], s1[20];
 975         int x = 0, y;
 976         struct stream *s = NULL;
 977
 978         for (i = 0; i <= nr_streams; i++) {
 979                 if (i>0) s = &streams[i-1];
 980                 y=i;
 981                 x=0;
 982                 addfield("Stream", "%d", i);
 983                 addfield("Bandwidth", "%s", bandwidth_to_text(s1, s->bandwidth_bps));
 984                 addfield("Packet size", "%d bytes", s->packet_size);
 985                 addfield("Period   ", "%s", usec_to_text(s1, s->period_usec));
 986                 addfield("AC   ", "%s", ac_to_text[s->ac]);
 987                 addfield("Worst-case delay", "%s", usec_to_text(s1, s->wc_delay));
 988                 addfield("Received responses", "%lld", s->received);
 989         }
 990         wnoutrefresh(stdscr);
 991         doupdate();
 992 }
 993
 994 void print_status_nogui(int seconds)
 995 {
 996         int ac;
 997         fprintf(stderr, "\r%3ds", seconds);
 998         for (ac = 0; ac < AC_NUM; ac++) {
 999                 int delta = receivers[ac].received - receivers[ac].last_received;
1000                 receivers[ac].last_received = receivers[ac].received;
1001                 fprintf(stderr, " %s %5d %4d/s", ac_to_text[ac], receivers[ac].received, delta);
1002         }
1003         fflush(stderr);
1004 }
1005
1006 #ifdef WITH_FWP
1007 int print_log_domain(ul_log_domain_t *domain, void *context)
1008 {
1009         printf("%s = %d\n", domain->name, domain->level);
1010         return 0;
1011 }
1012 #endif
1013 int main(int argc, char *argv[])
1014 {
1015         int i, rc, frames, seconds;
1016         pthread_attr_t attr;
1017         pthread_t thread;
1018         char opt;
1019
1020
1021         while ((opt = getopt(argc, argv, "B:b:C:c:Gg:I:j:l:o:qQ:s:T:")) != -1) {
1022                 switch (opt) {
1023                         case 'B':
1024                                 opt_def_bandwidth = atoi(optarg);
1025                                 break;
1026                         case 'b': {
1027                                 char *errpos;
1028                                 errpos = parse_bandwidths(optarg);
1029                                 if (errpos != NULL) {
1030                                         if (*errpos == '\0')
1031                                                 error(1, 0, "Bandwidth parse error - string to short");
1032                                         else
1033                                                 error(1, 0, "Bandwidth parse error at '%s'", errpos);
1034                                 }
1035                                 break;
1036                         }
1037                         case 'C':
1038                                 opt_comment = optarg;
1039                                 break;
1040                         case 'c':
1041                                 opt_count_sec = atoi(optarg);
1042                                 break;
1043                         case 'G':
1044                                 opt_gui = true;
1045                                 break;
1046                         case 'g':
1047                                 opt_granularity_usec = atoi(optarg);
1048                                 if (opt_granularity_usec < MIN_GRANULARITY) {
1049                                         error(1, 0, "Granulatiry too small (min %d)", MIN_GRANULARITY);
1050                                 }
1051                                 break;
1052                         case 'I':
1053                                 opt_interface = optarg;
1054                                 break;
1055                         case 'j':
1056                                 #ifdef WITH_FWP
1057                                 error(1, 0, "-j is not allowd when compiled with FWP");
1058                                 #else
1059                                 opt_jitter = atoi(optarg);
1060                                 #endif
1061                                 break;
1062 #ifdef WITH_FWP
1063                         case 'l':
1064                                 if (*optarg == '?') {
1065                                         ul_logreg_for_each_domain(print_log_domain, NULL);
1066                                         exit(0);
1067                                 }
1068                                 {
1069                                         int ret;
1070                                         ret = ul_log_domain_arg2levels(optarg);
1071                                         if (ret)
1072                                                 error(1, EINVAL, "Error parsing -l argument at char %d\n", ret);
1073                                 }
1074                                 break;
1075 #endif
1076                         case 'o':
1077                                 opt_output = optarg;
1078                                 break;
1079                         case 'Q':
1080                                 opt_send_buf_size = atoi(optarg);
1081                                 break;
1082                         case 'q':
1083                                 opt_wait_for_queue_is_full = true;
1084                                 break;
1085                         case 's':
1086                                 opt_packet_size = atoi(optarg);
1087                                 break;
1088                         case 'T':
1089                                 opt_def_period_msec = atoi(optarg);
1090                                 break;
1091                         default:
1092                                 fprintf(stderr, "Usage: %s [ options ] server_addr\n\n", argv[0]);
1093                                 fprintf(stderr, "Options:\n");
1094                                 fprintf(stderr, "    -B  default bandwidth for -b option [kbit]\n");
1095                                 fprintf(stderr, "    -b  bandwidth of streams (VO|VI|BE|BK)[:<kbit>][@<msec> or /<bytes>][,...]\n");
1096                                 fprintf(stderr, "    -C  comment (added to header)\n");
1097                                 fprintf(stderr, "    -c  count (number of seconds to run)\n");
1098                                 fprintf(stderr, "    -g  histogram granularity [usec]\n");
1099                                 fprintf(stderr, "    -I  <interface> send packets from this interface\n");
1100 #ifdef WITH_FWP
1101                                 fprintf(stderr, "    -l  <loglevel> uLUt logging levels\n");
1102 #endif
1103                                 fprintf(stderr, "    -j  send jitter (0-100) [%%]\n");
1104                                 fprintf(stderr, "    -o  output filename (.dat will be appended)\n");
1105                                 fprintf(stderr, "    -q  gather statistics only after some queue becomes full\n");
1106                                 fprintf(stderr, "    -Q  <bytes> set size for socket send buffers\n");
1107                                 fprintf(stderr, "    -s  size of data payload in packets [bytes] (default: %d)\n", opt_packet_size);
1108                                 fprintf(stderr, "    -T  default period for -b option [msec]\n");
1109                                 exit(1);
1110                 }
1111         }
1112         if (opt_packet_size && opt_def_period_msec) {
1113                 error(1, 0, "Error: Nonzero -T and -s can't be used together!");
1114         }
1115
1116         if (optind < argc) {
1117                 server_addr = argv[optind];
1118         } else {
1119                 error(1, 0, "Expected server address argument");
1120         }
1121
1122         if (nr_streams == 0)
1123                 parse_bandwidths("BE");
1124
1125         pthread_attr_init(&attr);
1126
1127         snprintf(logfname, sizeof(logfname), "%s.dat", opt_output);
1128
1129         if ((logfd = fopen(logfname,"w+")) == NULL) {
1130                 error(1, errno ,"Can not open %s", logfname);
1131         }
1132         if (signal(SIGTERM, stopper) == SIG_ERR) {
1133                 error(1, errno, "Error in signal registration");
1134         }
1135
1136         if (signal(SIGINT, stopper) == SIG_ERR) {
1137                 error(1, errno, "Signal handler registration error");
1138         }
1139
1140         struct sigaction sa;
1141         sa.sa_handler = empty_handler;
1142         sa.sa_flags = 0;        /* don't restart syscalls */
1143
1144         if (sigaction(SIGUSR1, &sa, NULL) < 0) {
1145                 error(1, errno, "sigaction error");
1146         }
1147
1148         sem_init(&sem_thread_finished, 0, 0);
1149
1150         reset_statistics();
1151
1152 #ifdef WITH_FWP
1153         //ul_log_domain_arg2levels("6");
1154         rc = frsh_init();
1155         if (rc != 0) {
1156                 error(1, errno, "FWP initialization failed");
1157         }
1158 #else
1159         intptr_t ac;
1160         /* create four receivers each per AC */
1161         for (ac = AC_NUM - 1; ac >= 0; ac--) {
1162                 ac_sockfd[ac] = create_ac_socket(ac);
1163                 if (ac_sockfd[ac] < 0) {
1164                         return 1;
1165                 }
1166                 rc = pthread_create(&receivers[ac].thread, &attr, receiver, (void*) ac);
1167                 if (rc) {
1168                         error(1, rc, "Error while creating receiver");
1169                 }
1170                 receivers[ac].valid = true;
1171         }
1172 #endif
1173
1174
1175         if (opt_interface) {
1176                 struct ifreq ifr;
1177
1178                 memset(&ifr, 0, sizeof(ifr));
1179                 strncpy(ifr.ifr_name, opt_interface, IFNAMSIZ-1);
1180                 if (ioctl(ac_sockfd[AC_VO], SIOCGIFINDEX, &ifr) < 0) {
1181                         error(1, 0, "unknown iface %s", opt_interface);
1182                 }
1183                 cmsg.ipi.ipi_ifindex = ifr.ifr_ifindex;
1184                 cmsg_len = sizeof(cmsg);
1185         }
1186         /* create sendpoints */
1187         for (i = 0; i < nr_streams; i++) {
1188                 struct stream *s = &streams[i];
1189                 pthread_mutex_init(&s->mutex, NULL);
1190                 calc_stream_params(s);
1191                 rc = pthread_create(&thread, &attr, sender, (void*) s);
1192                 if (rc) error(1, rc, "Error while creating sender");
1193         }
1194
1195         if (some_contract_not_accepted) {
1196                 stopper();
1197         } else {
1198                 init_gui();
1199
1200                 seconds = 1;
1201                 frames=0;
1202                 while (!exit_flag) {
1203                         if (opt_gui) {
1204                                 usleep(40000);
1205                                 frames++;
1206                                 if (frames>=25) {
1207                                         seconds++;
1208                                         frames = 0;
1209                                 }
1210                                 print_status_gui(seconds);
1211                         } else {
1212                                 sleep(1);
1213                                 seconds++;
1214                                 print_status_nogui(seconds);
1215                         }
1216
1217                         if (seconds == opt_count_sec)
1218                                 stopper();
1219                 }
1220         }
1221
1222         end_gui();
1223
1224         fprintf(stderr, "\nWaiting for threads to finish\n");
1225         wait_for_all_threads_to_finish();
1226
1227 #ifdef WITH_FWP
1228         for (i=0; i < nr_streams; i++) {
1229                 if (streams[i].vres)
1230                         frsh_contract_cancel(streams[i].vres);
1231                 if (streams[i].vres_rcv)
1232                         frsh_contract_cancel(streams[i].vres_rcv);
1233         }
1234 #endif
1235
1236         struct timespec ts;
1237         uint64_t end_timestamp, measure_length;
1238         clock_gettime(CLOCK_REALTIME,&ts);
1239         end_timestamp = ts.tv_sec*1000000000LL+ts.tv_nsec;
1240         measure_length = end_timestamp - reset_timestamp;
1241
1242         save_results(argc, argv, measure_length/1000);
1243
1244         return 0;
1245 }