ifpps.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * Copyright 2009 - 2013 Daniel Borkmann.
   4  * Subject to the GPL, version 2.
   5  */
   6
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <curses.h>
  10 #include <getopt.h>
  11 #include <ctype.h>
  12 #include <sys/socket.h>
  13 #include <sys/fsuid.h>
  14 #include <signal.h>
  15 #include <stdint.h>
  16 #include <stdlib.h>
  17 #include <time.h>
  18
  19 #include "die.h"
  20 #include "xmalloc.h"
  21 #include "xutils.h"
  22 #include "xio.h"
  23 #include "built_in.h"
  24
  25 struct wifi_stat {
  26         uint32_t bitrate;
  27         int16_t link_qual, link_qual_max;
  28         int signal_level /*, noise_level*/;
  29 };
  30
  31 struct ifstat {
  32         long long unsigned int rx_bytes, rx_packets, rx_drops, rx_errors;
  33         long long unsigned int rx_fifo, rx_frame, rx_multi;
  34         long long unsigned int tx_bytes, tx_packets, tx_drops, tx_errors;
  35         long long unsigned int tx_fifo, tx_colls, tx_carrier;
  36         long long unsigned int irqs[MAX_CPUS], irqs_srx[MAX_CPUS], irqs_stx[MAX_CPUS];
  37         int64_t cpu_user[MAX_CPUS], cpu_nice[MAX_CPUS], cpu_sys[MAX_CPUS];
  38         int64_t cpu_idle[MAX_CPUS], cpu_iow[MAX_CPUS], mem_free, mem_total;
  39         uint32_t irq_nr, procs_run, procs_iow, cswitch, forks;
  40         struct wifi_stat wifi;
  41 };
  42
  43 volatile sig_atomic_t sigint = 0;
  44
  45 static struct ifstat stats_old, stats_new, stats_delta;
  46
  47 static int stats_loop = 0;
  48
  49 static WINDOW *stats_screen = NULL;
  50
  51 static const char *short_options = "d:t:vhclp";
  52 static const struct option long_options[] = {
  53         {"dev",                 required_argument,      NULL, 'd'},
  54         {"interval",            required_argument,      NULL, 't'},
  55         {"promisc",             no_argument,            NULL, 'p'},
  56         {"csv",                 no_argument,            NULL, 'c'},
  57         {"loop",                no_argument,            NULL, 'l'},
  58         {"version",             no_argument,            NULL, 'v'},
  59         {"help",                no_argument,            NULL, 'h'},
  60         {NULL, 0, NULL, 0}
  61 };
  62
  63 static void signal_handler(int number)
  64 {
  65         switch (number) {
  66         case SIGINT:
  67                 sigint = 1;
  68                 break;
  69         case SIGHUP:
  70         default:
  71                 break;
  72         }
  73 }
  74
  75 static inline char *snr_to_str(int level)
  76 {
  77         if (level > 40)
  78                 return "very good signal";
  79         if (level > 25 && level <= 40)
  80                 return "good signal";
  81         if (level > 15 && level <= 25)
  82                 return "poor signal";
  83         if (level > 10 && level <= 15)
  84                 return "very poor signal";
  85         if (level <= 10)
  86                 return "no signal";
  87
  88         return "unknown";
  89 }
  90
  91 static inline int iswireless(const struct ifstat *stats)
  92 {
  93         return stats->wifi.bitrate > 0;
  94 }
  95
  96 static void help(void)
  97 {
  98         printf("\nifpps %s, top-like kernel networking and system statistics\n",
  99                VERSION_STRING);
 100         puts("http://www.netsniff-ng.org\n\n"
 101              "Usage: ifpps [options] || ifpps <netdev>\n"
 102              "Options:\n"
 103              "  -d|--dev <netdev>      Device to fetch statistics for e.g., eth0\n"
 104              "  -t|--interval <time>   Refresh time in ms (default 1000 ms)\n"
 105              "  -p|--promisc           Promiscuous mode\n"
 106              "  -c|--csv               Output to terminal as Gnuplot-ready data\n"
 107              "  -l|--loop              Continuous CSV output\n"
 108              "  -v|--version           Print version\n"
 109              "  -h|--help              Print this help\n\n"
 110              "Examples:\n"
 111              "  ifpps eth0\n"
 112              "  ifpps -pd eth0\n"
 113              "  ifpps -lpcd wlan0 > plot.dat\n\n"
 114              "Note:\n"
 115              "  On 10G cards, RX/TX statistics are usually accumulated each > 1sec.\n"
 116              "  Thus, in those situations, it's good to use a -t of 10sec.\n\n"
 117              "Please report bugs to <bugs@netsniff-ng.org>\n"
 118              "Copyright (C) 2009-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
 119              "Swiss federal institute of technology (ETH Zurich)\n"
 120              "License: GNU GPL version 2.0\n"
 121              "This is free software: you are free to change and redistribute it.\n"
 122              "There is NO WARRANTY, to the extent permitted by law.\n");
 123         die();
 124 }
 125
 126 static void version(void)
 127 {
 128         printf("\nifpps %s, top-like kernel networking and system statistics\n",
 129                VERSION_STRING);
 130         puts("http://www.netsniff-ng.org\n\n"
 131              "Please report bugs to <bugs@netsniff-ng.org>\n"
 132              "Copyright (C) 2009-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
 133              "Swiss federal institute of technology (ETH Zurich)\n"
 134              "License: GNU GPL version 2.0\n"
 135              "This is free software: you are free to change and redistribute it.\n"
 136              "There is NO WARRANTY, to the extent permitted by law.\n");
 137         die();
 138 }
 139
 140 static int stats_proc_net_dev(const char *ifname, struct ifstat *stats)
 141 {
 142         int ret = -EINVAL;
 143         char buff[256];
 144         FILE *fp;
 145
 146         fp = fopen("/proc/net/dev", "r");
 147         if (!fp)
 148                 panic("Cannot open /proc/net/dev!\n");
 149
 150         if (fgets(buff, sizeof(buff), fp)) { ; }
 151         if (fgets(buff, sizeof(buff), fp)) { ; }
 152
 153         memset(buff, 0, sizeof(buff));
 154
 155         while (fgets(buff, sizeof(buff), fp) != NULL) {
 156                 buff[sizeof(buff) -1] = 0;
 157
 158                 if (strstr(buff, ifname) == NULL)
 159                         continue;
 160
 161                 if (sscanf(buff, "%*[a-z0-9 .-]:%llu%llu%llu%llu%llu%llu"
 162                            "%llu%*u%llu%llu%llu%llu%llu%llu%llu",
 163                            &stats->rx_bytes, &stats->rx_packets,
 164                            &stats->rx_errors, &stats->rx_drops,
 165                            &stats->rx_fifo, &stats->rx_frame,
 166                            &stats->rx_multi, &stats->tx_bytes,
 167                            &stats->tx_packets, &stats->tx_errors,
 168                            &stats->tx_drops, &stats->tx_fifo,
 169                            &stats->tx_colls, &stats->tx_carrier) == 14) {
 170                         ret = 0;
 171                         break;
 172                 }
 173
 174                 memset(buff, 0, sizeof(buff));
 175         }
 176
 177         fclose(fp);
 178         return ret;
 179 }
 180
 181 static int stats_proc_interrupts(char *ifname, struct ifstat *stats)
 182 {
 183         int ret = -EINVAL, i, cpus, try = 0;
 184         char *ptr, buff[256];
 185         struct ethtool_drvinfo drvinf;
 186         FILE *fp;
 187
 188         fp = fopen("/proc/interrupts", "r");
 189         if (!fp)
 190                 panic("Cannot open /proc/interrupts!\n");
 191
 192         cpus = get_number_cpus();
 193         bug_on(cpus > MAX_CPUS);
 194 retry:
 195         fseek(fp, 0, SEEK_SET);
 196         memset(buff, 0, sizeof(buff));
 197
 198         while (fgets(buff, sizeof(buff), fp) != NULL) {
 199                 buff[sizeof(buff) - 1] = 0;
 200                 ptr = buff;
 201
 202                 if (strstr(buff, ifname) == NULL)
 203                         continue;
 204
 205                 stats->irq_nr = strtol(ptr, &ptr, 10);
 206                 bug_on(stats->irq_nr == 0);
 207
 208                 if (ptr)
 209                         ptr++;
 210                 for (i = 0; i < cpus && ptr; ++i) {
 211                         stats->irqs[i] = strtol(ptr, &ptr, 10);
 212                         if (i == cpus - 1) {
 213                                 ret = 0;
 214                                 goto done;
 215                         }
 216                 }
 217
 218                 memset(buff, 0, sizeof(buff));
 219         }
 220
 221         if (ret == -EINVAL && try == 0) {
 222                 memset(&drvinf, 0, sizeof(drvinf));
 223                 if (ethtool_drvinf(ifname, &drvinf) < 0)
 224                         goto done;
 225
 226                 ifname = drvinf.driver;
 227                 try++;
 228
 229                 goto retry;
 230         }
 231 done:
 232         fclose(fp);
 233         return ret;
 234 }
 235
 236 static int stats_proc_softirqs(struct ifstat *stats)
 237 {
 238         int i, cpus;
 239         char *ptr, buff[256];
 240         FILE *fp;
 241         enum {
 242                 softirqs_net_rx,
 243                 softirqs_net_tx,
 244                 softirqs_net_none,
 245         } net_type = softirqs_net_none;
 246
 247         fp = fopen("/proc/softirqs", "r");
 248         if (!fp)
 249                 panic("Cannot open /proc/softirqs!\n");
 250
 251         cpus = get_number_cpus();
 252         bug_on(cpus > MAX_CPUS);
 253
 254         memset(buff, 0, sizeof(buff));
 255
 256         while (fgets(buff, sizeof(buff), fp) != NULL) {
 257                 buff[sizeof(buff) - 1] = 0;
 258
 259                 if ((ptr = strstr(buff, "NET_TX:")))
 260                         net_type = softirqs_net_tx;
 261                 else if ((ptr = strstr(buff, "NET_RX:")))
 262                         net_type = softirqs_net_rx;
 263                 else
 264                         continue;
 265
 266                 for (ptr += strlen("NET_xX:"), i = 0; i < cpus; ++i) {
 267                         switch (net_type) {
 268                         case softirqs_net_tx:
 269                                 stats->irqs_stx[i] = strtol(ptr, &ptr, 10);
 270                                 break;
 271                         case softirqs_net_rx:
 272                                 stats->irqs_srx[i] = strtol(ptr, &ptr, 10);
 273                                 break;
 274                         default:
 275                                 bug();
 276                         }
 277                 }
 278
 279                 memset(buff, 0, sizeof(buff));
 280         }
 281
 282         fclose(fp);
 283         return 0;
 284 }
 285
 286 static int stats_proc_memory(struct ifstat *stats)
 287 {
 288         char *ptr, buff[256];
 289         FILE *fp;
 290
 291         fp = fopen("/proc/meminfo", "r");
 292         if (!fp)
 293                 panic("Cannot open /proc/meminfo!\n");
 294
 295         memset(buff, 0, sizeof(buff));
 296
 297         while (fgets(buff, sizeof(buff), fp) != NULL) {
 298                 buff[sizeof(buff) - 1] = 0;
 299
 300                 if ((ptr = strstr(buff, "MemTotal:"))) {
 301                         ptr += strlen("MemTotal:");
 302                         stats->mem_total = strtol(ptr, &ptr, 10);
 303                 } else if ((ptr = strstr(buff, "MemFree:"))) {
 304                         ptr += strlen("MemFree:");
 305                         stats->mem_free = strtol(ptr, &ptr, 10);
 306                 }
 307
 308                 memset(buff, 0, sizeof(buff));
 309         }
 310
 311         fclose(fp);
 312         return 0;
 313 }
 314
 315 static int stats_proc_system(struct ifstat *stats)
 316 {
 317         int cpu, cpus;
 318         char *ptr, buff[256];
 319         FILE *fp;
 320
 321         fp = fopen("/proc/stat", "r");
 322         if (!fp)
 323                 panic("Cannot open /proc/stat!\n");
 324
 325         cpus = get_number_cpus();
 326         bug_on(cpus > MAX_CPUS);
 327
 328         memset(buff, 0, sizeof(buff));
 329
 330         while (fgets(buff, sizeof(buff), fp) != NULL) {
 331                 buff[sizeof(buff) - 1] = 0;
 332
 333                 if ((ptr = strstr(buff, "cpu"))) {
 334                         ptr += strlen("cpu");
 335                         if (isblank(*ptr))
 336                                 goto next;
 337
 338                         cpu = strtol(ptr, &ptr, 10);
 339                         bug_on(cpu > cpus);
 340
 341                         if (sscanf(ptr, "%lu%lu%lu%lu%lu",
 342                                    &stats->cpu_user[cpu],
 343                                    &stats->cpu_nice[cpu],
 344                                    &stats->cpu_sys[cpu],
 345                                    &stats->cpu_idle[cpu],
 346                                    &stats->cpu_iow[cpu]) != 5)
 347                                 goto next;
 348                 } else if ((ptr = strstr(buff, "ctxt"))) {
 349                         ptr += strlen("ctxt");
 350                         stats->cswitch = strtoul(ptr, &ptr, 10);
 351                 } else if ((ptr = strstr(buff, "processes"))) {
 352                         ptr += strlen("processes");
 353                         stats->forks = strtoul(ptr, &ptr, 10);
 354                 } else if ((ptr = strstr(buff, "procs_running"))) {
 355                         ptr += strlen("procs_running");
 356                         stats->procs_run = strtoul(ptr, &ptr, 10);
 357                 } else if ((ptr = strstr(buff, "procs_blocked"))) {
 358                         ptr += strlen("procs_blocked");
 359                         stats->procs_iow = strtoul(ptr, &ptr, 10);
 360                 }
 361 next:
 362                 memset(buff, 0, sizeof(buff));
 363         }
 364
 365         fclose(fp);
 366         return 0;
 367 }
 368
 369 static int adjust_dbm_level(int in_dbm, int dbm_val)
 370 {
 371         if (!in_dbm)
 372                 return dbm_val;
 373
 374         return dbm_val - 0x100;
 375 }
 376
 377 static int stats_wireless(const char *ifname, struct ifstat *stats)
 378 {
 379         int ret;
 380         struct iw_statistics ws;
 381
 382         ret = wireless_sigqual(ifname, &ws);
 383         if (ret != 0) {
 384                 stats->wifi.bitrate = 0;
 385                 return -EINVAL;
 386         }
 387
 388         stats->wifi.bitrate = wireless_bitrate(ifname);
 389
 390         stats->wifi.signal_level =
 391                 adjust_dbm_level(ws.qual.updated & IW_QUAL_DBM, ws.qual.level);
 392
 393         stats->wifi.link_qual = ws.qual.qual;
 394         stats->wifi.link_qual_max = wireless_rangemax_sigqual(ifname);
 395
 396         return ret;
 397 }
 398
 399 #define DIFF1(member)   do { diff->member = new->member - old->member; } while (0)
 400 #define DIFF(member)    do { \
 401                 if (sizeof(diff->member) != sizeof(new->member) || \
 402                     sizeof(diff->member) != sizeof(old->member)) \
 403                         bug(); \
 404                 bug_on((new->member - old->member) > (new->member)); \
 405                 DIFF1(member); \
 406         } while (0)
 407
 408 static void stats_diff(struct ifstat *old, struct ifstat *new,
 409                        struct ifstat *diff)
 410 {
 411         int cpus, i;
 412
 413         DIFF(rx_bytes);
 414         DIFF(rx_packets);
 415         DIFF(rx_drops);
 416         DIFF(rx_errors);
 417         DIFF(rx_fifo);
 418         DIFF(rx_frame);
 419         DIFF(rx_multi);
 420
 421         DIFF(tx_bytes);
 422         DIFF(tx_bytes);
 423         DIFF(tx_packets);
 424         DIFF(tx_drops);
 425         DIFF(tx_errors);
 426         DIFF(tx_fifo);
 427         DIFF(tx_colls);
 428         DIFF(tx_carrier);
 429
 430         DIFF1(procs_run);
 431         DIFF1(procs_iow);
 432
 433         DIFF1(wifi.signal_level);
 434         DIFF1(wifi.link_qual);
 435
 436         DIFF1(cswitch);
 437         DIFF1(forks);
 438
 439         cpus = get_number_cpus();
 440         bug_on(cpus > MAX_CPUS);
 441
 442         for (i = 0; i < cpus; ++i) {
 443                 DIFF(irqs[i]);
 444                 DIFF(irqs_srx[i]);
 445                 DIFF(irqs_stx[i]);
 446
 447                 DIFF1(cpu_user[i]);
 448                 DIFF1(cpu_nice[i]);
 449                 DIFF1(cpu_sys[i]);
 450                 DIFF1(cpu_idle[i]);
 451                 DIFF1(cpu_iow[i]);
 452         }
 453 }
 454
 455 static void stats_fetch(const char *ifname, struct ifstat *stats)
 456 {
 457         if (stats_proc_net_dev(ifname, stats) < 0)
 458                 panic("Cannot fetch device stats!\n");
 459         if (stats_proc_softirqs(stats) < 0)
 460                 panic("Cannot fetch software interrupts!\n");
 461         if (stats_proc_memory(stats) < 0)
 462                 panic("Cannot fetch memory stats!\n");
 463         if (stats_proc_system(stats) < 0)
 464                 panic("Cannot fetch system stats!\n");
 465
 466         stats_proc_interrupts((char *) ifname, stats);
 467
 468         stats_wireless(ifname, stats);
 469 }
 470
 471 static void stats_sample_generic(const char *ifname, uint64_t ms_interval)
 472 {
 473         memset(&stats_old, 0, sizeof(stats_old));
 474         memset(&stats_new, 0, sizeof(stats_new));
 475         memset(&stats_delta, 0, sizeof(stats_delta));
 476
 477         stats_fetch(ifname, &stats_old);
 478         usleep(ms_interval * 1000);
 479         stats_fetch(ifname, &stats_new);
 480
 481         stats_diff(&stats_old, &stats_new, &stats_delta);
 482 }
 483
 484 static void screen_init(WINDOW **screen)
 485 {
 486         (*screen) = initscr();
 487
 488         raw();
 489         noecho();
 490         cbreak();
 491         nodelay((*screen), TRUE);
 492
 493         keypad(stdscr, TRUE);
 494
 495         refresh();
 496         wrefresh((*screen));
 497 }
 498
 499 static void screen_header(WINDOW *screen, const char *ifname, int *voff,
 500                           uint64_t ms_interval)
 501 {
 502         size_t len = 0;
 503         char buff[64];
 504         struct ethtool_drvinfo drvinf;
 505         u32 rate = device_bitrate(ifname);
 506         int link = ethtool_link(ifname);
 507
 508         memset(&drvinf, 0, sizeof(drvinf));
 509         ethtool_drvinf(ifname, &drvinf);
 510
 511         memset(buff, 0, sizeof(buff));
 512         if (rate)
 513                 len += snprintf(buff + len, sizeof(buff) - len, " %uMbit/s", rate);
 514         if (link >= 0)
 515                 len += snprintf(buff + len, sizeof(buff) - len, " link:%s",
 516                                 link == 0 ? "no" : "yes");
 517
 518         mvwprintw(screen, (*voff)++, 2,
 519                   "Kernel net/sys statistics for %s (%s%s), t=%lums"
 520                   "               ",
 521                   ifname, drvinf.driver, buff, ms_interval);
 522 }
 523
 524 static void screen_net_dev_rel(WINDOW *screen, const struct ifstat *rel,
 525                                int *voff)
 526 {
 527         attron(A_REVERSE);
 528
 529         mvwprintw(screen, (*voff)++, 0,
 530                   "  RX: %16.3llf MiB/t "
 531                         "%10llu pkts/t "
 532                         "%10llu drops/t "
 533                         "%10llu errors/t  ",
 534                   ((long double) rel->rx_bytes) / (1LLU << 20),
 535                   rel->rx_packets, rel->rx_drops, rel->rx_errors);
 536
 537         mvwprintw(screen, (*voff)++, 0,
 538                   "  TX: %16.3llf MiB/t "
 539                         "%10llu pkts/t "
 540                         "%10llu drops/t "
 541                         "%10llu errors/t  ",
 542                   ((long double) rel->tx_bytes) / (1LLU << 20),
 543                   rel->tx_packets, rel->tx_drops, rel->tx_errors);
 544
 545         attroff(A_REVERSE);
 546 }
 547
 548 static void screen_net_dev_abs(WINDOW *screen, const struct ifstat *abs,
 549                                int *voff)
 550 {
 551         mvwprintw(screen, (*voff)++, 2,
 552                   "RX: %16.3llf MiB   "
 553                       "%10llu pkts   "
 554                       "%10llu drops   "
 555                       "%10llu errors",
 556                   ((long double) abs->rx_bytes) / (1LLU << 20),
 557                   abs->rx_packets, abs->rx_drops, abs->rx_errors);
 558
 559         mvwprintw(screen, (*voff)++, 2,
 560                   "TX: %16.3llf MiB   "
 561                       "%10llu pkts   "
 562                       "%10llu drops   "
 563                       "%10llu errors",
 564                   ((long double) abs->tx_bytes) / (1LLU << 20),
 565                   abs->tx_packets, abs->tx_drops, abs->tx_errors);
 566 }
 567
 568 static void screen_sys_mem(WINDOW *screen, const struct ifstat *rel,
 569                            const struct ifstat *abs, int *voff)
 570 {
 571         mvwprintw(screen, (*voff)++, 2,
 572                   "SYS:  %14u cs/t "
 573                         "%10.1lf%% mem "
 574                         "%13u running "
 575                         "%10u iowait",
 576                   rel->cswitch,
 577                   (100.0 * (abs->mem_total - abs->mem_free)) / abs->mem_total,
 578                   abs->procs_run, abs->procs_iow);
 579 }
 580
 581 static void screen_percpu_states(WINDOW *screen, const struct ifstat *rel,
 582                                  int cpus, int *voff)
 583 {
 584         int i;
 585         uint64_t all;
 586
 587         for (i = 0; i < cpus; ++i) {
 588                 all = rel->cpu_user[i] + rel->cpu_nice[i] + rel->cpu_sys[i] +
 589                       rel->cpu_idle[i] + rel->cpu_iow[i];
 590
 591                 mvwprintw(screen, (*voff)++, 2,
 592                           "CPU%d: %13.1lf%% usr/t "
 593                                  "%9.1lf%% sys/t "
 594                                  "%10.1lf%% idl/t "
 595                                  "%11.1lf%% iow/t  ", i,
 596                           100.0 * (rel->cpu_user[i] + rel->cpu_nice[i]) / all,
 597                           100.0 * rel->cpu_sys[i] / all,
 598                           100.0 * rel->cpu_idle[i] / all,
 599                           100.0 * rel->cpu_iow[i] / all);
 600         }
 601 }
 602
 603 static void screen_percpu_irqs_rel(WINDOW *screen, const struct ifstat *rel,
 604                                    int cpus, int *voff)
 605 {
 606         int i;
 607
 608         for (i = 0; i < cpus; ++i) {
 609                 mvwprintw(screen, (*voff)++, 2,
 610                           "CPU%d: %14llu irqs/t   "
 611                                  "%15llu soirq RX/t   "
 612                                  "%15llu soirq TX/t      ", i,
 613                           rel->irqs[i],
 614                           rel->irqs_srx[i],
 615                           rel->irqs_stx[i]);
 616         }
 617 }
 618
 619 static void screen_percpu_irqs_abs(WINDOW *screen, const struct ifstat *abs,
 620                                    int cpus, int *voff)
 621 {
 622         int i;
 623
 624         for (i = 0; i < cpus; ++i) {
 625                 mvwprintw(screen, (*voff)++, 2,
 626                           "CPU%d: %14llu irqs", i,
 627                           abs->irqs[i]);
 628         }
 629 }
 630
 631 static void screen_wireless(WINDOW *screen, const struct ifstat *rel,
 632                             const struct ifstat *abs, int *voff)
 633 {
 634         if (iswireless(abs)) {
 635                 mvwprintw(screen, (*voff)++, 2,
 636                           "LinkQual: %7d/%d (%d/t)          ",
 637                           abs->wifi.link_qual,
 638                           abs->wifi.link_qual_max,
 639                           rel->wifi.link_qual);
 640
 641                 mvwprintw(screen, (*voff)++, 2,
 642                           "Signal: %8d dBm (%d dBm/t)       ",
 643                           abs->wifi.signal_level,
 644                           rel->wifi.signal_level);
 645         }
 646 }
 647
 648 static void screen_update(WINDOW *screen, const char *ifname, const struct ifstat *rel,
 649                           const struct ifstat *abs, int *first, uint64_t ms_interval)
 650 {
 651         int cpus, voff = 1, cvoff = 2;
 652
 653         curs_set(0);
 654
 655         cpus = get_number_cpus();
 656         bug_on(cpus > MAX_CPUS);
 657
 658         screen_header(screen, ifname, &voff, ms_interval);
 659
 660         voff++;
 661         screen_net_dev_rel(screen, rel, &voff);
 662
 663         voff++;
 664         screen_net_dev_abs(screen, abs, &voff);
 665
 666         voff++;
 667         screen_sys_mem(screen, rel, abs, &voff);
 668
 669         voff++;
 670         screen_percpu_states(screen, rel, cpus, &voff);
 671
 672         voff++;
 673         screen_percpu_irqs_rel(screen, rel, cpus, &voff);
 674
 675         voff++;
 676         screen_percpu_irqs_abs(screen, abs, cpus, &voff);
 677
 678         voff++;
 679         screen_wireless(screen, rel, abs, &voff);
 680
 681         if (*first) {
 682                 mvwprintw(screen, cvoff, 2, "Collecting data ...");
 683                 *first = 0;
 684         } else {
 685                 mvwprintw(screen, cvoff, 2, "                   ");
 686         }
 687
 688         wrefresh(screen);
 689         refresh();
 690 }
 691
 692 static void screen_end(void)
 693 {
 694         endwin();
 695 }
 696
 697 static int screen_main(const char *ifname, uint64_t ms_interval)
 698 {
 699         int first = 1, key;
 700
 701         screen_init(&stats_screen);
 702
 703         while (!sigint) {
 704                 key = getch();
 705                 if (key == 'q' || key == 0x1b || key == KEY_F(10))
 706                         break;
 707
 708                 screen_update(stats_screen, ifname, &stats_delta, &stats_new,
 709                               &first, ms_interval);
 710
 711                 stats_sample_generic(ifname, ms_interval);
 712         }
 713
 714         screen_end();
 715
 716         return 0;
 717 }
 718
 719 static void term_csv(const char *ifname, const struct ifstat *rel,
 720                      const struct ifstat *abs, uint64_t ms_interval)
 721 {
 722         int cpus, i;
 723
 724         printf("%ld ", time(0));
 725
 726         printf("%llu ", rel->rx_bytes);
 727         printf("%llu ", rel->rx_packets);
 728         printf("%llu ", rel->rx_drops);
 729         printf("%llu ", rel->rx_errors);
 730
 731         printf("%llu ", abs->rx_bytes);
 732         printf("%llu ", abs->rx_packets);
 733         printf("%llu ", abs->rx_drops);
 734         printf("%llu ", abs->rx_errors);
 735
 736         printf("%llu ", rel->tx_bytes);
 737         printf("%llu ", rel->tx_packets);
 738         printf("%llu ", rel->tx_drops);
 739         printf("%llu ", rel->tx_errors);
 740
 741         printf("%llu ", abs->tx_bytes);
 742         printf("%llu ", abs->tx_packets);
 743         printf("%llu ", abs->tx_drops);
 744         printf("%llu ", abs->tx_errors);
 745
 746         printf("%u ",  rel->cswitch);
 747         printf("%lu ", abs->mem_free);
 748         printf("%lu ", abs->mem_total - abs->mem_free);
 749         printf("%lu ", abs->mem_total);
 750         printf("%u ",  abs->procs_run);
 751         printf("%u ",  abs->procs_iow);
 752
 753         cpus = get_number_cpus();
 754         bug_on(cpus > MAX_CPUS);
 755
 756         for (i = 0; i < cpus; ++i) {
 757                 printf("%lu ", rel->cpu_user[i]);
 758                 printf("%lu ", rel->cpu_nice[i]);
 759                 printf("%lu ", rel->cpu_sys[i]);
 760                 printf("%lu ", rel->cpu_idle[i]);
 761                 printf("%lu ", rel->cpu_iow[i]);
 762
 763                 printf("%llu ", rel->irqs[i]);
 764                 printf("%llu ", abs->irqs[i]);
 765
 766                 printf("%llu ", rel->irqs_srx[i]);
 767                 printf("%llu ", abs->irqs_srx[i]);
 768
 769                 printf("%llu ", rel->irqs_stx[i]);
 770                 printf("%llu ", abs->irqs_stx[i]);
 771         }
 772
 773         if (iswireless(abs)) {
 774                 printf("%u ", rel->wifi.link_qual);
 775                 printf("%u ", abs->wifi.link_qual);
 776                 printf("%u ", abs->wifi.link_qual_max);
 777
 778                 printf("%d ", rel->wifi.signal_level);
 779                 printf("%d ", abs->wifi.signal_level);
 780         }
 781
 782         puts("");
 783         fflush(stdout);
 784 }
 785
 786 static void term_csv_header(const char *ifname, const struct ifstat *abs,
 787                             uint64_t ms_interval)
 788 {
 789         int cpus, i, j = 1;
 790
 791         printf("# gnuplot dump (#col:description)\n");
 792         printf("# networking interface: %s\n", ifname);
 793         printf("# sampling interval (t): %lu ms\n", ms_interval);
 794         printf("# %d:unixtime ", j++);
 795
 796         printf("%d:rx-bytes-per-t ", j++);
 797         printf("%d:rx-pkts-per-t ", j++);
 798         printf("%d:rx-drops-per-t ", j++);
 799         printf("%d:rx-errors-per-t ", j++);
 800
 801         printf("%d:rx-bytes ", j++);
 802         printf("%d:rx-pkts ", j++);
 803         printf("%d:rx-drops ", j++);
 804         printf("%d:rx-errors ", j++);
 805
 806         printf("%d:tx-bytes-per-t ", j++);
 807         printf("%d:tx-pkts-per-t ", j++);
 808         printf("%d:tx-drops-per-t ", j++);
 809         printf("%d:tx-errors-per-t ", j++);
 810
 811         printf("%d:tx-bytes ", j++);
 812         printf("%d:tx-pkts ", j++);
 813         printf("%d:tx-drops ", j++);
 814         printf("%d:tx-errors ", j++);
 815
 816         printf("%d:context-switches-per-t ", j++);
 817         printf("%d:mem-free ", j++);
 818         printf("%d:mem-used ", j++);
 819         printf("%d:mem-total ", j++);
 820         printf("%d:procs-in-run ", j++);
 821         printf("%d:procs-in-iow ", j++);
 822
 823         cpus = get_number_cpus();
 824         bug_on(cpus > MAX_CPUS);
 825
 826         for (i = 0, j = 22; i < cpus; ++i) {
 827                 printf("%d:cpu%i-usr-per-t ", j++, i);
 828                 printf("%d:cpu%i-nice-per-t ", j++, i);
 829                 printf("%d:cpu%i-sys-per-t ", j++, i);
 830                 printf("%d:cpu%i-idle-per-t ", j++, i);
 831                 printf("%d:cpu%i-iow-per-t ", j++, i);
 832
 833                 printf("%d:cpu%i-net-irqs-per-t ", j++, i);
 834                 printf("%d:cpu%i-net-irqs ", j++, i);
 835
 836                 printf("%d:cpu%i-net-rx-soft-irqs-per-t ", j++, i);
 837                 printf("%d:cpu%i-net-rx-soft-irqs ", j++, i);
 838                 printf("%d:cpu%i-net-tx-soft-irqs-per-t ", j++, i);
 839                 printf("%d:cpu%i-net-tx-soft-irqs ", j++, i);
 840         }
 841
 842         if (iswireless(abs)) {
 843                 printf("%d:wifi-link-qual-per-t ", j++);
 844                 printf("%d:wifi-link-qual ", j++);
 845                 printf("%d:wifi-link-qual-max ", j++);
 846
 847                 printf("%d:wifi-signal-dbm-per-t ", j++);
 848                 printf("%d:wifi-signal-dbm ", j++);
 849         }
 850
 851         puts("");
 852         printf("# data:\n");
 853         fflush(stdout);
 854 }
 855
 856 static int term_main(const char *ifname, uint64_t ms_interval)
 857 {
 858         int first = 1;
 859
 860         do {
 861                 stats_sample_generic(ifname, ms_interval);
 862
 863                 if (first) {
 864                         first = 0;
 865                         term_csv_header(ifname, &stats_new, ms_interval);
 866                 }
 867
 868                 term_csv(ifname, &stats_delta, &stats_new, ms_interval);
 869         } while (stats_loop && !sigint);
 870
 871         return 0;
 872 }
 873
 874 int main(int argc, char **argv)
 875 {
 876         short ifflags = 0;
 877         int c, opt_index, ret, promisc = 0;
 878         uint64_t interval = 1000;
 879         char *ifname = NULL;
 880         int (*func_main)(const char *ifname, uint64_t ms_interval) = screen_main;
 881
 882         setfsuid(getuid());
 883         setfsgid(getgid());
 884
 885         while ((c = getopt_long(argc, argv, short_options, long_options,
 886                &opt_index)) != EOF) {
 887                 switch (c) {
 888                 case 'h':
 889                         help();
 890                         break;
 891                 case 'v':
 892                         version();
 893                         break;
 894                 case 'd':
 895                         ifname = xstrndup(optarg, IFNAMSIZ);
 896                         break;
 897                 case 't':
 898                         interval = strtol(optarg, NULL, 10);
 899                         break;
 900                 case 'l':
 901                         stats_loop = 1;
 902                         break;
 903                 case 'p':
 904                         promisc = 1;
 905                         break;
 906                 case 'c':
 907                         func_main = term_main;
 908                         break;
 909                 case '?':
 910                         switch (optopt) {
 911                         case 'd':
 912                         case 't':
 913                                 panic("Option -%c requires an argument!\n",
 914                                       optopt);
 915                         default:
 916                                 if (isprint(optopt))
 917                                         printf("Unknown option character `0x%X\'!\n", optopt);
 918                                 die();
 919                         }
 920                 default:
 921                         break;
 922                 }
 923         }
 924
 925         if (argc == 1)
 926                 help();
 927
 928         if (argc == 2)
 929                 ifname = xstrndup(argv[1], IFNAMSIZ);
 930         if (ifname == NULL)
 931                 panic("No networking device given!\n");
 932
 933         if (!strncmp("lo", ifname, IFNAMSIZ))
 934                 panic("lo is not supported!\n");
 935         if (device_mtu(ifname) == 0)
 936                 panic("This is no networking device!\n");
 937
 938         register_signal(SIGINT, signal_handler);
 939         register_signal(SIGHUP, signal_handler);
 940
 941         if (promisc)
 942                 ifflags = enter_promiscuous_mode(ifname);
 943         ret = func_main(ifname, interval);
 944         if (promisc)
 945                 leave_promiscuous_mode(ifname, ifflags);
 946
 947         xfree(ifname);
 948         return ret;
 949 }