util.c

   1 #include <ctype.h>
   2 #include <netlink/attr.h>
   3 #include <errno.h>
   4 #include <stdbool.h>
   5 #include "iw.h"
   6 #include "nl80211.h"
   7
   8 void mac_addr_n2a(char *mac_addr, const unsigned char *arg)
   9 {
  10         int i, l;
  11
  12         l = 0;
  13         for (i = 0; i < ETH_ALEN ; i++) {
  14                 if (i == 0) {
  15                         sprintf(mac_addr+l, "%02x", arg[i]);
  16                         l += 2;
  17                 } else {
  18                         sprintf(mac_addr+l, ":%02x", arg[i]);
  19                         l += 3;
  20                 }
  21         }
  22 }
  23
  24 int mac_addr_a2n(unsigned char *mac_addr, char *arg)
  25 {
  26         int i;
  27
  28         for (i = 0; i < ETH_ALEN ; i++) {
  29                 int temp;
  30                 char *cp = strchr(arg, ':');
  31                 if (cp) {
  32                         *cp = 0;
  33                         cp++;
  34                 }
  35                 if (sscanf(arg, "%x", &temp) != 1)
  36                         return -1;
  37                 if (temp < 0 || temp > 255)
  38                         return -1;
  39
  40                 mac_addr[i] = temp;
  41                 if (!cp)
  42                         break;
  43                 arg = cp;
  44         }
  45         if (i < ETH_ALEN - 1)
  46                 return -1;
  47
  48         return 0;
  49 }
  50
  51 int parse_hex_mask(char *hexmask, unsigned char **result, size_t *result_len,
  52                    unsigned char **mask)
  53 {
  54         size_t len = strlen(hexmask) / 2;
  55         unsigned char *result_val;
  56         unsigned char *result_mask = NULL;
  57
  58         int pos = 0;
  59
  60         *result_len = 0;
  61
  62         result_val = calloc(len + 2, 1);
  63         if (!result_val)
  64                 goto error;
  65         *result = result_val;
  66         if (mask) {
  67                 result_mask = calloc(DIV_ROUND_UP(len, 8) + 2, 1);
  68                 if (!result_mask)
  69                         goto error;
  70                 *mask = result_mask;
  71         }
  72
  73         while (1) {
  74                 char *cp = strchr(hexmask, ':');
  75                 if (cp) {
  76                         *cp = 0;
  77                         cp++;
  78                 }
  79
  80                 if (result_mask && (strcmp(hexmask, "-") == 0 ||
  81                                     strcmp(hexmask, "xx") == 0 ||
  82                                     strcmp(hexmask, "--") == 0)) {
  83                         /* skip this byte and leave mask bit unset */
  84                 } else {
  85                         int temp, mask_pos;
  86                         char *end;
  87
  88                         temp = strtoul(hexmask, &end, 16);
  89                         if (*end)
  90                                 goto error;
  91                         if (temp < 0 || temp > 255)
  92                                 goto error;
  93                         result_val[pos] = temp;
  94
  95                         mask_pos = pos / 8;
  96                         if (result_mask)
  97                                 result_mask[mask_pos] |= 1 << (pos % 8);
  98                 }
  99
 100                 (*result_len)++;
 101                 pos++;
 102
 103                 if (!cp)
 104                         break;
 105                 hexmask = cp;
 106         }
 107
 108         return 0;
 109  error:
 110         free(result_val);
 111         free(result_mask);
 112         return -1;
 113 }
 114
 115 unsigned char *parse_hex(char *hex, size_t *outlen)
 116 {
 117         unsigned char *result;
 118
 119         if (parse_hex_mask(hex, &result, outlen, NULL))
 120                 return NULL;
 121         return result;
 122 }
 123
 124 static const char *ifmodes[NL80211_IFTYPE_MAX + 1] = {
 125         "unspecified",
 126         "IBSS",
 127         "managed",
 128         "AP",
 129         "AP/VLAN",
 130         "WDS",
 131         "monitor",
 132         "mesh point",
 133         "P2P-client",
 134         "P2P-GO",
 135         "P2P-device",
 136         "outside context of a BSS",
 137         "NAN",
 138 };
 139
 140 static char modebuf[100];
 141
 142 const char *iftype_name(enum nl80211_iftype iftype)
 143 {
 144         if (iftype <= NL80211_IFTYPE_MAX && ifmodes[iftype])
 145                 return ifmodes[iftype];
 146         sprintf(modebuf, "Unknown mode (%d)", iftype);
 147         return modebuf;
 148 }
 149
 150 static const char *commands[NL80211_CMD_MAX + 1] = {
 151 #include "nl80211-commands.inc"
 152 };
 153
 154 static char cmdbuf[100];
 155
 156 const char *command_name(enum nl80211_commands cmd)
 157 {
 158         if (cmd <= NL80211_CMD_MAX && commands[cmd])
 159                 return commands[cmd];
 160         sprintf(cmdbuf, "Unknown command (%d)", cmd);
 161         return cmdbuf;
 162 }
 163
 164 int ieee80211_channel_to_frequency(int chan, enum nl80211_band band)
 165 {
 166         /* see 802.11 17.3.8.3.2 and Annex J
 167          * there are overlapping channel numbers in 5GHz and 2GHz bands */
 168         if (chan <= 0)
 169                 return 0; /* not supported */
 170         switch (band) {
 171         case NL80211_BAND_2GHZ:
 172                 if (chan == 14)
 173                         return 2484;
 174                 else if (chan < 14)
 175                         return 2407 + chan * 5;
 176                 break;
 177         case NL80211_BAND_5GHZ:
 178                 if (chan >= 182 && chan <= 196)
 179                         return 4000 + chan * 5;
 180                 else
 181                         return 5000 + chan * 5;
 182                 break;
 183         case NL80211_BAND_6GHZ:
 184                 /* see 802.11ax D6.1 27.3.23.2 */
 185                 if (chan == 2)
 186                         return 5935;
 187                 if (chan <= 253)
 188                         return 5950 + chan * 5;
 189                 break;
 190         case NL80211_BAND_60GHZ:
 191                 if (chan < 7)
 192                         return 56160 + chan * 2160;
 193                 break;
 194         default:
 195                 ;
 196         }
 197         return 0; /* not supported */
 198 }
 199
 200 int ieee80211_frequency_to_channel(int freq)
 201 {
 202         /* see 802.11-2007 17.3.8.3.2 and Annex J */
 203         if (freq == 2484)
 204                 return 14;
 205         /* see 802.11ax D6.1 27.3.23.2 and Annex E */
 206         else if (freq == 5935)
 207                 return 2;
 208         else if (freq < 2484)
 209                 return (freq - 2407) / 5;
 210         else if (freq >= 4910 && freq <= 4980)
 211                 return (freq - 4000) / 5;
 212         else if (freq < 5950)
 213                 return (freq - 5000) / 5;
 214         else if (freq <= 45000) /* DMG band lower limit */
 215                 /* see 802.11ax D6.1 27.3.23.2 */
 216                 return (freq - 5950) / 5;
 217         else if (freq >= 58320 && freq <= 70200)
 218                 return (freq - 56160) / 2160;
 219         else
 220                 return 0;
 221 }
 222
 223 void print_ssid_escaped(const uint8_t len, const uint8_t *data)
 224 {
 225         int i;
 226
 227         for (i = 0; i < len; i++) {
 228                 if (isprint(data[i]) && data[i] != ' ' && data[i] != '\\')
 229                         printf("%c", data[i]);
 230                 else if (data[i] == ' ' &&
 231                          (i != 0 && i != len -1))
 232                         printf(" ");
 233                 else
 234                         printf("\\x%.2x", data[i]);
 235         }
 236 }
 237
 238 static int hex2num(char digit)
 239 {
 240         if (!isxdigit(digit))
 241                 return -1;
 242         if (isdigit(digit))
 243                 return digit - '0';
 244         return tolower(digit) - 'a' + 10;
 245 }
 246
 247 static int hex2byte(const char *hex)
 248 {
 249         int d1, d2;
 250
 251         d1 = hex2num(hex[0]);
 252         if (d1 < 0)
 253                 return -1;
 254         d2 = hex2num(hex[1]);
 255         if (d2 < 0)
 256                 return -1;
 257         return (d1 << 4) | d2;
 258 }
 259
 260 char *hex2bin(const char *hex, char *buf)
 261 {
 262         char *result = buf;
 263         int d;
 264
 265         while (hex[0]) {
 266                 d = hex2byte(hex);
 267                 if (d < 0)
 268                         return NULL;
 269                 buf[0] = d;
 270                 buf++;
 271                 hex += 2;
 272         }
 273
 274         return result;
 275 }
 276
 277 static int parse_akm_suite(const char *cipher_str)
 278 {
 279
 280         if (!strcmp(cipher_str, "PSK"))
 281                 return 0x000FAC02;
 282         if (!strcmp(cipher_str, "FT/PSK"))
 283                 return 0x000FAC03;
 284         if (!strcmp(cipher_str, "PSK/SHA-256"))
 285                 return 0x000FAC06;
 286         return -EINVAL;
 287 }
 288
 289 static int parse_cipher_suite(const char *cipher_str)
 290 {
 291
 292         if (!strcmp(cipher_str, "TKIP"))
 293                 return WLAN_CIPHER_SUITE_TKIP;
 294         if (!strcmp(cipher_str, "CCMP") || !strcmp(cipher_str, "CCMP-128"))
 295                 return WLAN_CIPHER_SUITE_CCMP;
 296         if (!strcmp(cipher_str, "GCMP") || !strcmp(cipher_str, "GCMP-128"))
 297                 return WLAN_CIPHER_SUITE_GCMP;
 298         if (!strcmp(cipher_str, "GCMP-256"))
 299                 return WLAN_CIPHER_SUITE_GCMP_256;
 300         if (!strcmp(cipher_str, "CCMP-256"))
 301                 return WLAN_CIPHER_SUITE_CCMP_256;
 302         return -EINVAL;
 303 }
 304
 305 int parse_keys(struct nl_msg *msg, char **argv[], int *argc)
 306 {
 307         struct nlattr *keys;
 308         int i = 0;
 309         bool have_default = false;
 310         char *arg = **argv;
 311         char keybuf[13];
 312         int pos = 0;
 313
 314         if (!*argc)
 315                 return 1;
 316
 317         if (!memcmp(&arg[pos], "psk", 3)) {
 318                 char psk_keybuf[32];
 319                 int cipher_suite, akm_suite;
 320
 321                 if (*argc < 4)
 322                         goto explain;
 323
 324                 pos+=3;
 325                 if (arg[pos] != ':')
 326                         goto explain;
 327                 pos++;
 328
 329                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, NL80211_WPA_VERSION_2);
 330
 331                 if (strlen(&arg[pos]) != (sizeof(psk_keybuf) * 2) || !hex2bin(&arg[pos], psk_keybuf)) {
 332                         printf("Bad PSK\n");
 333                         return -EINVAL;
 334                 }
 335
 336                 NLA_PUT(msg, NL80211_ATTR_PMK, 32, psk_keybuf);
 337                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, NL80211_AUTHTYPE_OPEN_SYSTEM);
 338
 339                 *argv += 1;
 340                 *argc -= 1;
 341                 arg = **argv;
 342
 343                 akm_suite = parse_akm_suite(arg);
 344                 if (akm_suite < 0)
 345                         goto explain;
 346
 347                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, akm_suite);
 348
 349                 *argv += 1;
 350                 *argc -= 1;
 351                 arg = **argv;
 352
 353                 cipher_suite = parse_cipher_suite(arg);
 354                 if (cipher_suite < 0)
 355                         goto explain;
 356
 357                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher_suite);
 358
 359                 *argv += 1;
 360                 *argc -= 1;
 361                 arg = **argv;
 362
 363                 cipher_suite = parse_cipher_suite(arg);
 364                 if (cipher_suite < 0)
 365                         goto explain;
 366
 367                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher_suite);
 368
 369                 *argv += 1;
 370                 *argc -= 1;
 371                 return 0;
 372         }
 373
 374         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
 375
 376         keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
 377         if (!keys)
 378                 return -ENOBUFS;
 379
 380         do {
 381                 int keylen;
 382                 struct nlattr *key = nla_nest_start(msg, ++i);
 383                 char *keydata;
 384
 385                 arg = **argv;
 386                 pos = 0;
 387
 388                 if (!key)
 389                         return -ENOBUFS;
 390
 391                 if (arg[pos] == 'd') {
 392                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
 393                         pos++;
 394                         if (arg[pos] == ':')
 395                                 pos++;
 396                         have_default = true;
 397                 }
 398
 399                 if (!isdigit(arg[pos]))
 400                         goto explain;
 401                 NLA_PUT_U8(msg, NL80211_KEY_IDX, arg[pos++] - '0');
 402                 if (arg[pos++] != ':')
 403                         goto explain;
 404                 keydata = arg + pos;
 405                 switch (strlen(keydata)) {
 406                 case 10:
 407                         keydata = hex2bin(keydata, keybuf);
 408                         /* fall through */
 409                 case 5:
 410                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
 411                                     WLAN_CIPHER_SUITE_WEP40);
 412                         keylen = 5;
 413                         break;
 414                 case 26:
 415                         keydata = hex2bin(keydata, keybuf);
 416                         /* fall through */
 417                 case 13:
 418                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
 419                                     WLAN_CIPHER_SUITE_WEP104);
 420                         keylen = 13;
 421                         break;
 422                 default:
 423                         goto explain;
 424                 }
 425
 426                 if (!keydata)
 427                         goto explain;
 428
 429                 NLA_PUT(msg, NL80211_KEY_DATA, keylen, keydata);
 430
 431                 *argv += 1;
 432                 *argc -= 1;
 433
 434                 /* one key should be TX key */
 435                 if (!have_default && !*argc)
 436                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
 437
 438                 nla_nest_end(msg, key);
 439         } while (*argc);
 440
 441         nla_nest_end(msg, keys);
 442
 443         return 0;
 444  nla_put_failure:
 445         return -ENOBUFS;
 446  explain:
 447         fprintf(stderr, "key must be [d:]index:data where\n"
 448                         "  'd:'     means default (transmit) key\n"
 449                         "  'index:' is a single digit (0-3)\n"
 450                         "  'data'   must be 5 or 13 ascii chars\n"
 451                         "           or 10 or 26 hex digits\n"
 452                         "for example: d:2:6162636465 is the same as d:2:abcde\n"
 453                         "or psk:data <AKM Suite> <pairwise CIPHER> <groupwise CIPHER> where\n"
 454                         "  'data' is the PSK (output of wpa_passphrase and the CIPHER can be CCMP or GCMP\n"
 455                         "for example: psk:0123456789abcdef PSK CCMP CCMP\n"
 456                         "The allowed AKM suites are PSK, FT/PSK, PSK/SHA-256\n"
 457                         "The allowed Cipher suites are TKIP, CCMP, GCMP, GCMP-256, CCMP-256\n");
 458         return 2;
 459 }
 460
 461 enum nl80211_chan_width str_to_bw(const char *str)
 462 {
 463         static const struct {
 464                 const char *name;
 465                 unsigned int val;
 466         } bwmap[] = {
 467                 { .name = "5", .val = NL80211_CHAN_WIDTH_5, },
 468                 { .name = "10", .val = NL80211_CHAN_WIDTH_10, },
 469                 { .name = "20", .val = NL80211_CHAN_WIDTH_20, },
 470                 { .name = "40", .val = NL80211_CHAN_WIDTH_40, },
 471                 { .name = "80", .val = NL80211_CHAN_WIDTH_80, },
 472                 { .name = "80+80", .val = NL80211_CHAN_WIDTH_80P80, },
 473                 { .name = "160", .val = NL80211_CHAN_WIDTH_160, },
 474         };
 475         unsigned int i;
 476
 477         for (i = 0; i < ARRAY_SIZE(bwmap); i++) {
 478                 if (strcasecmp(bwmap[i].name, str) == 0)
 479                         return bwmap[i].val;
 480         }
 481
 482         return NL80211_CHAN_WIDTH_20_NOHT;
 483 }
 484
 485 static int parse_freqs(struct chandef *chandef, int argc, char **argv,
 486                        int *parsed)
 487 {
 488         uint32_t freq;
 489         char *end;
 490         bool need_cf1 = false, need_cf2 = false;
 491
 492         if (argc < 1)
 493                 return 0;
 494
 495         chandef->width = str_to_bw(argv[0]);
 496
 497         switch (chandef->width) {
 498         case NL80211_CHAN_WIDTH_20_NOHT:
 499                 /* First argument was not understood, give up gracefully. */
 500                 return 0;
 501         case NL80211_CHAN_WIDTH_20:
 502         case NL80211_CHAN_WIDTH_5:
 503         case NL80211_CHAN_WIDTH_10:
 504                 break;
 505         case NL80211_CHAN_WIDTH_80P80:
 506                 need_cf2 = true;
 507                 /* fall through */
 508         case NL80211_CHAN_WIDTH_40:
 509         case NL80211_CHAN_WIDTH_80:
 510         case NL80211_CHAN_WIDTH_160:
 511                 need_cf1 = true;
 512                 break;
 513         case NL80211_CHAN_WIDTH_1:
 514         case NL80211_CHAN_WIDTH_2:
 515         case NL80211_CHAN_WIDTH_4:
 516         case NL80211_CHAN_WIDTH_8:
 517         case NL80211_CHAN_WIDTH_16:
 518                 /* can't happen yet */
 519                 break;
 520         }
 521
 522         *parsed += 1;
 523
 524         if (!need_cf1)
 525                 return 0;
 526
 527         if (argc < 2)
 528                 return 1;
 529
 530         /* center freq 1 */
 531         if (!*argv[1])
 532                 return 1;
 533         freq = strtoul(argv[1], &end, 10);
 534         if (*end)
 535                 return 1;
 536         *parsed += 1;
 537
 538         chandef->center_freq1 = freq;
 539
 540         if (!need_cf2)
 541                 return 0;
 542
 543         if (argc < 3)
 544                 return 1;
 545
 546         /* center freq 2 */
 547         if (!*argv[2])
 548                 return 1;
 549         freq = strtoul(argv[2], &end, 10);
 550         if (*end)
 551                 return 1;
 552         chandef->center_freq2 = freq;
 553
 554         *parsed += 1;
 555
 556         return 0;
 557 }
 558
 559
 560 /**
 561  * parse_freqchan - Parse frequency or channel definition
 562  *
 563  * @chandef: chandef structure to be filled in
 564  * @chan: Boolean whether to parse a channel or frequency based specifier
 565  * @argc: Number of arguments
 566  * @argv: Array of string arguments
 567  * @parsed: Pointer to return the number of used arguments, or NULL to error
 568  *          out if any argument is left unused.
 569  *
 570  * The given chandef structure will be filled in from the command line
 571  * arguments. argc/argv will be updated so that further arguments from the
 572  * command line can be parsed.
 573  *
 574  * Note that despite the fact that the function knows how many center freqs
 575  * are needed, there's an ambiguity if the next argument after this is an
 576  * integer argument, since the valid channel width values are interpreted
 577  * as such, rather than a following argument. This can be avoided by the
 578  * user by giving "NOHT" instead.
 579  *
 580  * The working specifier if chan is set are:
 581  *   <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz|160MHz]
 582  *
 583  * And if frequency is set:
 584  *   <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz|160MHz]
 585  *   <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
 586  *
 587  * If the mode/channel width is not given the NOHT is assumed.
 588  *
 589  * Return: Number of used arguments, zero or negative error number otherwise
 590  */
 591 int parse_freqchan(struct chandef *chandef, bool chan, int argc, char **argv,
 592                    int *parsed)
 593 {
 594         char *end;
 595         static const struct chanmode chanmode[] = {
 596                 { .name = "HT20",
 597                   .width = NL80211_CHAN_WIDTH_20,
 598                   .freq1_diff = 0,
 599                   .chantype = NL80211_CHAN_HT20 },
 600                 { .name = "HT40+",
 601                   .width = NL80211_CHAN_WIDTH_40,
 602                   .freq1_diff = 10,
 603                   .chantype = NL80211_CHAN_HT40PLUS },
 604                 { .name = "HT40-",
 605                   .width = NL80211_CHAN_WIDTH_40,
 606                   .freq1_diff = -10,
 607                   .chantype = NL80211_CHAN_HT40MINUS },
 608                 { .name = "NOHT",
 609                   .width = NL80211_CHAN_WIDTH_20_NOHT,
 610                   .freq1_diff = 0,
 611                   .chantype = NL80211_CHAN_NO_HT },
 612                 { .name = "5MHz",
 613                   .width = NL80211_CHAN_WIDTH_5,
 614                   .freq1_diff = 0,
 615                   .chantype = -1 },
 616                 { .name = "10MHz",
 617                   .width = NL80211_CHAN_WIDTH_10,
 618                   .freq1_diff = 0,
 619                   .chantype = -1 },
 620                 { .name = "80MHz",
 621                   .width = NL80211_CHAN_WIDTH_80,
 622                   .freq1_diff = 0,
 623                   .chantype = -1 },
 624                 { .name = "160MHz",
 625                   .width = NL80211_CHAN_WIDTH_160,
 626                   .freq1_diff = 0,
 627                   .chantype = -1 },
 628         };
 629         const struct chanmode *chanmode_selected = NULL;
 630         unsigned int freq;
 631         unsigned int i;
 632         int _parsed = 0;
 633         int res = 0;
 634
 635         if (argc < 1)
 636                 return 1;
 637
 638         if (!argv[0])
 639                 goto out;
 640         freq = strtoul(argv[0], &end, 10);
 641         if (*end) {
 642                 res = 1;
 643                 goto out;
 644         }
 645
 646         _parsed += 1;
 647
 648         memset(chandef, 0, sizeof(struct chandef));
 649
 650         if (chan) {
 651                 enum nl80211_band band;
 652
 653                 band = freq <= 14 ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
 654                 freq = ieee80211_channel_to_frequency(freq, band);
 655         }
 656         chandef->control_freq = freq;
 657         /* Assume 20MHz NOHT channel for now. */
 658         chandef->center_freq1 = freq;
 659
 660         /* Try to parse HT mode definitions */
 661         if (argc > 1) {
 662                 for (i = 0; i < ARRAY_SIZE(chanmode); i++) {
 663                         if (strcasecmp(chanmode[i].name, argv[1]) == 0) {
 664                                 chanmode_selected = &chanmode[i];
 665                                 _parsed += 1;
 666                                 break;
 667                         }
 668                 }
 669         }
 670
 671         /* channel mode given, use it and return. */
 672         if (chanmode_selected) {
 673                 chandef->center_freq1 = get_cf1(chanmode_selected, freq);
 674                 chandef->width = chanmode_selected->width;
 675                 goto out;
 676         }
 677
 678         /* This was a only a channel definition, nothing further may follow. */
 679         if (chan)
 680                 goto out;
 681
 682         res = parse_freqs(chandef, argc - 1, argv + 1, &_parsed);
 683
 684  out:
 685         /* Error out if parsed is NULL. */
 686         if (!parsed && _parsed != argc)
 687                 return 1;
 688
 689         if (parsed)
 690                 *parsed = _parsed;
 691
 692         return res;
 693 }
 694
 695 int put_chandef(struct nl_msg *msg, struct chandef *chandef)
 696 {
 697         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chandef->control_freq);
 698         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width);
 699
 700         switch (chandef->width) {
 701         case NL80211_CHAN_WIDTH_20_NOHT:
 702                 NLA_PUT_U32(msg,
 703                             NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 704                             NL80211_CHAN_NO_HT);
 705                 break;
 706         case NL80211_CHAN_WIDTH_20:
 707                 NLA_PUT_U32(msg,
 708                             NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 709                             NL80211_CHAN_HT20);
 710                 break;
 711         case NL80211_CHAN_WIDTH_40:
 712                 if (chandef->control_freq > chandef->center_freq1)
 713                         NLA_PUT_U32(msg,
 714                                     NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 715                                     NL80211_CHAN_HT40MINUS);
 716                 else
 717                         NLA_PUT_U32(msg,
 718                                     NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 719                                     NL80211_CHAN_HT40PLUS);
 720                 break;
 721         default:
 722                 break;
 723         }
 724
 725         if (chandef->center_freq1)
 726                 NLA_PUT_U32(msg,
 727                             NL80211_ATTR_CENTER_FREQ1,
 728                             chandef->center_freq1);
 729
 730         if (chandef->center_freq2)
 731                 NLA_PUT_U32(msg,
 732                             NL80211_ATTR_CENTER_FREQ2,
 733                             chandef->center_freq2);
 734
 735         return 0;
 736
 737  nla_put_failure:
 738         return -ENOBUFS;
 739 }
 740
 741 static void print_mcs_index(const __u8 *mcs)
 742 {
 743         int mcs_bit, prev_bit = -2, prev_cont = 0;
 744
 745         for (mcs_bit = 0; mcs_bit <= 76; mcs_bit++) {
 746                 unsigned int mcs_octet = mcs_bit/8;
 747                 unsigned int MCS_RATE_BIT = 1 << mcs_bit % 8;
 748                 bool mcs_rate_idx_set;
 749
 750                 mcs_rate_idx_set = !!(mcs[mcs_octet] & MCS_RATE_BIT);
 751
 752                 if (!mcs_rate_idx_set)
 753                         continue;
 754
 755                 if (prev_bit != mcs_bit - 1) {
 756                         if (prev_bit != -2)
 757                                 printf("%d, ", prev_bit);
 758                         else
 759                                 printf(" ");
 760                         printf("%d", mcs_bit);
 761                         prev_cont = 0;
 762                 } else if (!prev_cont) {
 763                         printf("-");
 764                         prev_cont = 1;
 765                 }
 766
 767                 prev_bit = mcs_bit;
 768         }
 769
 770         if (prev_cont)
 771                 printf("%d", prev_bit);
 772         printf("\n");
 773 }
 774
 775 /*
 776  * There are only 4 possible values, we just use a case instead of computing it,
 777  * but technically this can also be computed through the formula:
 778  *
 779  * Max AMPDU length = (2 ^ (13 + exponent)) - 1 bytes
 780  */
 781 static __u32 compute_ampdu_length(__u8 exponent)
 782 {
 783         switch (exponent) {
 784         case 0: return 8191;  /* (2 ^(13 + 0)) -1 */
 785         case 1: return 16383; /* (2 ^(13 + 1)) -1 */
 786         case 2: return 32767; /* (2 ^(13 + 2)) -1 */
 787         case 3: return 65535; /* (2 ^(13 + 3)) -1 */
 788         default: return 0;
 789         }
 790 }
 791
 792 static const char *print_ampdu_space(__u8 space)
 793 {
 794         switch (space) {
 795         case 0: return "No restriction";
 796         case 1: return "1/4 usec";
 797         case 2: return "1/2 usec";
 798         case 3: return "1 usec";
 799         case 4: return "2 usec";
 800         case 5: return "4 usec";
 801         case 6: return "8 usec";
 802         case 7: return "16 usec";
 803         default:
 804                 return "BUG (spacing more than 3 bits!)";
 805         }
 806 }
 807
 808 void print_ampdu_length(__u8 exponent)
 809 {
 810         __u32 max_ampdu_length;
 811
 812         max_ampdu_length = compute_ampdu_length(exponent);
 813
 814         if (max_ampdu_length) {
 815                 printf("\t\tMaximum RX AMPDU length %d bytes (exponent: 0x0%02x)\n",
 816                        max_ampdu_length, exponent);
 817         } else {
 818                 printf("\t\tMaximum RX AMPDU length: unrecognized bytes "
 819                        "(exponent: %d)\n", exponent);
 820         }
 821 }
 822
 823 void print_ampdu_spacing(__u8 spacing)
 824 {
 825         printf("\t\tMinimum RX AMPDU time spacing: %s (0x%02x)\n",
 826                print_ampdu_space(spacing), spacing);
 827 }
 828
 829 void print_ht_capability(__u16 cap)
 830 {
 831 #define PRINT_HT_CAP(_cond, _str) \
 832         do { \
 833                 if (_cond) \
 834                         printf("\t\t\t" _str "\n"); \
 835         } while (0)
 836
 837         printf("\t\tCapabilities: 0x%02x\n", cap);
 838
 839         PRINT_HT_CAP((cap & BIT(0)), "RX LDPC");
 840         PRINT_HT_CAP((cap & BIT(1)), "HT20/HT40");
 841         PRINT_HT_CAP(!(cap & BIT(1)), "HT20");
 842
 843         PRINT_HT_CAP(((cap >> 2) & 0x3) == 0, "Static SM Power Save");
 844         PRINT_HT_CAP(((cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
 845         PRINT_HT_CAP(((cap >> 2) & 0x3) == 3, "SM Power Save disabled");
 846
 847         PRINT_HT_CAP((cap & BIT(4)), "RX Greenfield");
 848         PRINT_HT_CAP((cap & BIT(5)), "RX HT20 SGI");
 849         PRINT_HT_CAP((cap & BIT(6)), "RX HT40 SGI");
 850         PRINT_HT_CAP((cap & BIT(7)), "TX STBC");
 851
 852         PRINT_HT_CAP(((cap >> 8) & 0x3) == 0, "No RX STBC");
 853         PRINT_HT_CAP(((cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
 854         PRINT_HT_CAP(((cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
 855         PRINT_HT_CAP(((cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
 856
 857         PRINT_HT_CAP((cap & BIT(10)), "HT Delayed Block Ack");
 858
 859         PRINT_HT_CAP(!(cap & BIT(11)), "Max AMSDU length: 3839 bytes");
 860         PRINT_HT_CAP((cap & BIT(11)), "Max AMSDU length: 7935 bytes");
 861
 862         /*
 863          * For beacons and probe response this would mean the BSS
 864          * does or does not allow the usage of DSSS/CCK HT40.
 865          * Otherwise it means the STA does or does not use
 866          * DSSS/CCK HT40.
 867          */
 868         PRINT_HT_CAP((cap & BIT(12)), "DSSS/CCK HT40");
 869         PRINT_HT_CAP(!(cap & BIT(12)), "No DSSS/CCK HT40");
 870
 871         /* BIT(13) is reserved */
 872
 873         PRINT_HT_CAP((cap & BIT(14)), "40 MHz Intolerant");
 874
 875         PRINT_HT_CAP((cap & BIT(15)), "L-SIG TXOP protection");
 876 #undef PRINT_HT_CAP
 877 }
 878
 879 void print_ht_mcs(const __u8 *mcs)
 880 {
 881         /* As defined in 7.3.2.57.4 Supported MCS Set field */
 882         unsigned int tx_max_num_spatial_streams, max_rx_supp_data_rate;
 883         bool tx_mcs_set_defined, tx_mcs_set_equal, tx_unequal_modulation;
 884
 885         max_rx_supp_data_rate = (mcs[10] | ((mcs[11] & 0x3) << 8));
 886         tx_mcs_set_defined = !!(mcs[12] & (1 << 0));
 887         tx_mcs_set_equal = !(mcs[12] & (1 << 1));
 888         tx_max_num_spatial_streams = ((mcs[12] >> 2) & 3) + 1;
 889         tx_unequal_modulation = !!(mcs[12] & (1 << 4));
 890
 891         if (max_rx_supp_data_rate)
 892                 printf("\t\tHT Max RX data rate: %d Mbps\n", max_rx_supp_data_rate);
 893         /* XXX: else see 9.6.0e.5.3 how to get this I think */
 894
 895         if (tx_mcs_set_defined) {
 896                 if (tx_mcs_set_equal) {
 897                         printf("\t\tHT TX/RX MCS rate indexes supported:");
 898                         print_mcs_index(mcs);
 899                 } else {
 900                         printf("\t\tHT RX MCS rate indexes supported:");
 901                         print_mcs_index(mcs);
 902
 903                         if (tx_unequal_modulation)
 904                                 printf("\t\tTX unequal modulation supported\n");
 905                         else
 906                                 printf("\t\tTX unequal modulation not supported\n");
 907
 908                         printf("\t\tHT TX Max spatial streams: %d\n",
 909                                 tx_max_num_spatial_streams);
 910
 911                         printf("\t\tHT TX MCS rate indexes supported may differ\n");
 912                 }
 913         } else {
 914                 printf("\t\tHT RX MCS rate indexes supported:");
 915                 print_mcs_index(mcs);
 916                 printf("\t\tHT TX MCS rate indexes are undefined\n");
 917         }
 918 }
 919
 920 void print_vht_info(__u32 capa, const __u8 *mcs)
 921 {
 922         __u16 tmp;
 923         int i;
 924
 925         printf("\t\tVHT Capabilities (0x%.8x):\n", capa);
 926
 927 #define PRINT_VHT_CAPA(_bit, _str) \
 928         do { \
 929                 if (capa & BIT(_bit)) \
 930                         printf("\t\t\t" _str "\n"); \
 931         } while (0)
 932
 933         printf("\t\t\tMax MPDU length: ");
 934         switch (capa & 3) {
 935         case 0: printf("3895\n"); break;
 936         case 1: printf("7991\n"); break;
 937         case 2: printf("11454\n"); break;
 938         case 3: printf("(reserved)\n");
 939         }
 940         printf("\t\t\tSupported Channel Width: ");
 941         switch ((capa >> 2) & 3) {
 942         case 0: printf("neither 160 nor 80+80\n"); break;
 943         case 1: printf("160 MHz\n"); break;
 944         case 2: printf("160 MHz, 80+80 MHz\n"); break;
 945         case 3: printf("(reserved)\n");
 946         }
 947         PRINT_VHT_CAPA(4, "RX LDPC");
 948         PRINT_VHT_CAPA(5, "short GI (80 MHz)");
 949         PRINT_VHT_CAPA(6, "short GI (160/80+80 MHz)");
 950         PRINT_VHT_CAPA(7, "TX STBC");
 951         /* RX STBC */
 952         PRINT_VHT_CAPA(11, "SU Beamformer");
 953         PRINT_VHT_CAPA(12, "SU Beamformee");
 954         /* compressed steering */
 955         /* # of sounding dimensions */
 956         PRINT_VHT_CAPA(19, "MU Beamformer");
 957         PRINT_VHT_CAPA(20, "MU Beamformee");
 958         PRINT_VHT_CAPA(21, "VHT TXOP PS");
 959         PRINT_VHT_CAPA(22, "+HTC-VHT");
 960         /* max A-MPDU */
 961         /* VHT link adaptation */
 962         PRINT_VHT_CAPA(28, "RX antenna pattern consistency");
 963         PRINT_VHT_CAPA(29, "TX antenna pattern consistency");
 964
 965         printf("\t\tVHT RX MCS set:\n");
 966         tmp = mcs[0] | (mcs[1] << 8);
 967         for (i = 1; i <= 8; i++) {
 968                 printf("\t\t\t%d streams: ", i);
 969                 switch ((tmp >> ((i-1)*2) ) & 3) {
 970                 case 0: printf("MCS 0-7\n"); break;
 971                 case 1: printf("MCS 0-8\n"); break;
 972                 case 2: printf("MCS 0-9\n"); break;
 973                 case 3: printf("not supported\n"); break;
 974                 }
 975         }
 976         tmp = mcs[2] | (mcs[3] << 8);
 977         printf("\t\tVHT RX highest supported: %d Mbps\n", tmp & 0x1fff);
 978
 979         printf("\t\tVHT TX MCS set:\n");
 980         tmp = mcs[4] | (mcs[5] << 8);
 981         for (i = 1; i <= 8; i++) {
 982                 printf("\t\t\t%d streams: ", i);
 983                 switch ((tmp >> ((i-1)*2) ) & 3) {
 984                 case 0: printf("MCS 0-7\n"); break;
 985                 case 1: printf("MCS 0-8\n"); break;
 986                 case 2: printf("MCS 0-9\n"); break;
 987                 case 3: printf("not supported\n"); break;
 988                 }
 989         }
 990         tmp = mcs[6] | (mcs[7] << 8);
 991         printf("\t\tVHT TX highest supported: %d Mbps\n", tmp & 0x1fff);
 992 }
 993
 994 static void __print_he_capa(const __u16 *mac_cap,
 995                             const __u16 *phy_cap,
 996                             const __u16 *mcs_set, size_t mcs_len,
 997                             const __u8 *ppet, int ppet_len,
 998                             bool indent)
 999 {
1000         size_t mcs_used;
1001         int i;
1002         const char *pre = indent ? "\t" : "";
1003
1004         #define PRINT_HE_CAP(_var, _idx, _bit, _str) \
1005         do { \
1006                 if (_var[_idx] & BIT(_bit)) \
1007                         printf("%s\t\t\t" _str "\n", pre); \
1008         } while (0)
1009
1010         #define PRINT_HE_CAP_MASK(_var, _idx, _shift, _mask, _str) \
1011         do { \
1012                 if ((_var[_idx] >> _shift) & _mask) \
1013                         printf("%s\t\t\t" _str ": %d\n", pre, (_var[_idx] >> _shift) & _mask); \
1014         } while (0)
1015
1016         #define PRINT_HE_MAC_CAP(...) PRINT_HE_CAP(mac_cap, __VA_ARGS__)
1017         #define PRINT_HE_MAC_CAP_MASK(...) PRINT_HE_CAP_MASK(mac_cap, __VA_ARGS__)
1018         #define PRINT_HE_PHY_CAP(...) PRINT_HE_CAP(phy_cap, __VA_ARGS__)
1019         #define PRINT_HE_PHY_CAP0(_idx, _bit, ...) PRINT_HE_CAP(phy_cap, _idx, _bit + 8, __VA_ARGS__)
1020         #define PRINT_HE_PHY_CAP_MASK(...) PRINT_HE_CAP_MASK(phy_cap, __VA_ARGS__)
1021
1022         printf("%s\t\tHE MAC Capabilities (0x", pre);
1023         for (i = 0; i < 3; i++)
1024                 printf("%04x", mac_cap[i]);
1025         printf("):\n");
1026
1027         PRINT_HE_MAC_CAP(0, 0, "+HTC HE Supported");
1028         PRINT_HE_MAC_CAP(0, 1, "TWT Requester");
1029         PRINT_HE_MAC_CAP(0, 2, "TWT Responder");
1030         PRINT_HE_MAC_CAP_MASK(0, 3, 0x3, "Dynamic BA Fragementation Level");
1031         PRINT_HE_MAC_CAP_MASK(0, 5, 0x7, "Maximum number of MSDUS Fragments");
1032         PRINT_HE_MAC_CAP_MASK(0, 8, 0x3, "Minimum Payload size of 128 bytes");
1033         PRINT_HE_MAC_CAP_MASK(0, 10, 0x3, "Trigger Frame MAC Padding Duration");
1034         PRINT_HE_MAC_CAP_MASK(0, 12, 0x7, "Multi-TID Aggregation Support");
1035
1036         PRINT_HE_MAC_CAP(1, 1, "All Ack");
1037         PRINT_HE_MAC_CAP(1, 2, "TRS");
1038         PRINT_HE_MAC_CAP(1, 3, "BSR");
1039         PRINT_HE_MAC_CAP(1, 4, "Broadcast TWT");
1040         PRINT_HE_MAC_CAP(1, 5, "32-bit BA Bitmap");
1041         PRINT_HE_MAC_CAP(1, 6, "MU Cascading");
1042         PRINT_HE_MAC_CAP(1, 7, "Ack-Enabled Aggregation");
1043         PRINT_HE_MAC_CAP(1, 9, "OM Control");
1044         PRINT_HE_MAC_CAP(1, 10, "OFDMA RA");
1045         PRINT_HE_MAC_CAP_MASK(1, 11, 0x3, "Maximum A-MPDU Length Exponent");
1046         PRINT_HE_MAC_CAP(1, 13, "A-MSDU Fragmentation");
1047         PRINT_HE_MAC_CAP(1, 14, "Flexible TWT Scheduling");
1048         PRINT_HE_MAC_CAP(1, 15, "RX Control Frame to MultiBSS");
1049
1050         PRINT_HE_MAC_CAP(2, 0, "BSRP BQRP A-MPDU Aggregation");
1051         PRINT_HE_MAC_CAP(2, 1, "QTP");
1052         PRINT_HE_MAC_CAP(2, 2, "BQR");
1053         PRINT_HE_MAC_CAP(2, 3, "SRP Responder Role");
1054         PRINT_HE_MAC_CAP(2, 4, "NDP Feedback Report");
1055         PRINT_HE_MAC_CAP(2, 5, "OPS");
1056         PRINT_HE_MAC_CAP(2, 6, "A-MSDU in A-MPDU");
1057         PRINT_HE_MAC_CAP_MASK(2, 7, 7, "Multi-TID Aggregation TX");
1058         PRINT_HE_MAC_CAP(2, 10, "HE Subchannel Selective Transmission");
1059         PRINT_HE_MAC_CAP(2, 11, "UL 2x996-Tone RU");
1060         PRINT_HE_MAC_CAP(2, 12, "OM Control UL MU Data Disable RX");
1061
1062         printf("%s\t\tHE PHY Capabilities: (0x", pre);
1063         for (i = 0; i < 11; i++)
1064                 printf("%02x", ((__u8 *)phy_cap)[i + 1]);
1065         printf("):\n");
1066
1067         PRINT_HE_PHY_CAP0(0, 1, "HE40/2.4GHz");
1068         PRINT_HE_PHY_CAP0(0, 2, "HE40/HE80/5GHz");
1069         PRINT_HE_PHY_CAP0(0, 3, "HE160/5GHz");
1070         PRINT_HE_PHY_CAP0(0, 4, "HE160/HE80+80/5GHz");
1071         PRINT_HE_PHY_CAP0(0, 5, "242 tone RUs/2.4GHz");
1072         PRINT_HE_PHY_CAP0(0, 6, "242 tone RUs/5GHz");
1073
1074         PRINT_HE_PHY_CAP_MASK(1, 0, 0xf, "Punctured Preamble RX");
1075         PRINT_HE_PHY_CAP_MASK(1, 4, 0x1, "Device Class");
1076         PRINT_HE_PHY_CAP(1, 5, "LDPC Coding in Payload");
1077         PRINT_HE_PHY_CAP(1, 6, "HE SU PPDU with 1x HE-LTF and 0.8us GI");
1078         PRINT_HE_PHY_CAP_MASK(1, 7, 0x3, "Midamble Rx Max NSTS");
1079         PRINT_HE_PHY_CAP(1, 9, "NDP with 4x HE-LTF and 3.2us GI");
1080         PRINT_HE_PHY_CAP(1, 10, "STBC Tx <= 80MHz");
1081         PRINT_HE_PHY_CAP(1, 11, "STBC Rx <= 80MHz");
1082         PRINT_HE_PHY_CAP(1, 12, "Doppler Tx");
1083         PRINT_HE_PHY_CAP(1, 13, "Doppler Rx");
1084         PRINT_HE_PHY_CAP(1, 14, "Full Bandwidth UL MU-MIMO");
1085         PRINT_HE_PHY_CAP(1, 15, "Partial Bandwidth UL MU-MIMO");
1086
1087         PRINT_HE_PHY_CAP_MASK(2, 0, 0x3, "DCM Max Constellation");
1088         PRINT_HE_PHY_CAP_MASK(2, 2, 0x1, "DCM Max NSS Tx");
1089         PRINT_HE_PHY_CAP_MASK(2, 3, 0x3, "DCM Max Constellation Rx");
1090         PRINT_HE_PHY_CAP_MASK(2, 5, 0x1, "DCM Max NSS Rx");
1091         PRINT_HE_PHY_CAP(2, 6, "Rx HE MU PPDU from Non-AP STA");
1092         PRINT_HE_PHY_CAP(2, 7, "SU Beamformer");
1093         PRINT_HE_PHY_CAP(2, 8, "SU Beamformee");
1094         PRINT_HE_PHY_CAP(2, 9, "MU Beamformer");
1095         PRINT_HE_PHY_CAP_MASK(2, 10, 0x7, "Beamformee STS <= 80Mhz");
1096         PRINT_HE_PHY_CAP_MASK(2, 13, 0x7, "Beamformee STS > 80Mhz");
1097
1098         PRINT_HE_PHY_CAP_MASK(3, 0, 0x7, "Sounding Dimensions <= 80Mhz");
1099         PRINT_HE_PHY_CAP_MASK(3, 3, 0x7, "Sounding Dimensions > 80Mhz");
1100         PRINT_HE_PHY_CAP(3, 6, "Ng = 16 SU Feedback");
1101         PRINT_HE_PHY_CAP(3, 7, "Ng = 16 MU Feedback");
1102         PRINT_HE_PHY_CAP(3, 8, "Codebook Size SU Feedback");
1103         PRINT_HE_PHY_CAP(3, 9, "Codebook Size MU Feedback");
1104         PRINT_HE_PHY_CAP(3, 10, "Triggered SU Beamforming Feedback");
1105         PRINT_HE_PHY_CAP(3, 11, "Triggered MU Beamforming Feedback");
1106         PRINT_HE_PHY_CAP(3, 12, "Triggered CQI Feedback");
1107         PRINT_HE_PHY_CAP(3, 13, "Partial Bandwidth Extended Range");
1108         PRINT_HE_PHY_CAP(3, 14, "Partial Bandwidth DL MU-MIMO");
1109         PRINT_HE_PHY_CAP(3, 15, "PPE Threshold Present");
1110
1111         PRINT_HE_PHY_CAP(4, 0, "SRP-based SR");
1112         PRINT_HE_PHY_CAP(4, 1, "Power Boost Factor ar");
1113         PRINT_HE_PHY_CAP(4, 2, "HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI");
1114         PRINT_HE_PHY_CAP_MASK(4, 3, 0x7, "Max NC");
1115         PRINT_HE_PHY_CAP(4, 6, "STBC Tx > 80MHz");
1116         PRINT_HE_PHY_CAP(4, 7, "STBC Rx > 80MHz");
1117         PRINT_HE_PHY_CAP(4, 8, "HE ER SU PPDU 4x HE-LTF 0.8us GI");
1118         PRINT_HE_PHY_CAP(4, 9, "20MHz in 40MHz HE PPDU 2.4GHz");
1119         PRINT_HE_PHY_CAP(4, 10, "20MHz in 160/80+80MHz HE PPDU");
1120         PRINT_HE_PHY_CAP(4, 11, "80MHz in 160/80+80MHz HE PPDU");
1121         PRINT_HE_PHY_CAP(4, 12, "HE ER SU PPDU 1x HE-LTF 0.8us GI");
1122         PRINT_HE_PHY_CAP(4, 13, "Midamble Rx 2x & 1x HE-LTF");
1123         PRINT_HE_PHY_CAP_MASK(4, 14, 0x3, "DCM Max BW");
1124
1125         PRINT_HE_PHY_CAP(5, 0, "Longer Than 16HE SIG-B OFDM Symbols");
1126         PRINT_HE_PHY_CAP(5, 1, "Non-Triggered CQI Feedback");
1127         PRINT_HE_PHY_CAP(5, 2, "TX 1024-QAM");
1128         PRINT_HE_PHY_CAP(5, 3, "RX 1024-QAM");
1129         PRINT_HE_PHY_CAP(5, 4, "RX Full BW SU Using HE MU PPDU with Compression SIGB");
1130         PRINT_HE_PHY_CAP(5, 5, "RX Full BW SU Using HE MU PPDU with Non-Compression SIGB");
1131
1132         mcs_used = 0;
1133         for (i = 0; i < 3; i++) {
1134                 __u8 phy_cap_support[] = { BIT(1) | BIT(2), BIT(3), BIT(4) };
1135                 char *bw[] = { "<= 80", "160", "80+80" };
1136                 int j;
1137
1138                 if ((phy_cap[0] & (phy_cap_support[i] << 8)) == 0)
1139                         continue;
1140
1141                 /* Supports more, but overflow? Abort. */
1142                 if ((i * 2 + 2) * sizeof(mcs_set[0]) >= mcs_len)
1143                         return;
1144
1145                 for (j = 0; j < 2; j++) {
1146                         int k;
1147                         printf("%s\t\tHE %s MCS and NSS set %s MHz\n", pre, j ? "TX" : "RX", bw[i]);
1148                         for (k = 0; k < 8; k++) {
1149                                 __u16 mcs = mcs_set[(i * 2) + j];
1150                                 mcs >>= k * 2;
1151                                 mcs &= 0x3;
1152                                 printf("%s\t\t\t%d streams: ", pre, k + 1);
1153                                 if (mcs == 3)
1154                                         printf("not supported\n");
1155                                 else
1156                                         printf("MCS 0-%d\n", 7 + (mcs * 2));
1157                         }
1158
1159                 }
1160                 mcs_used += 2 * sizeof(mcs_set[0]);
1161         }
1162
1163         /* Caller didn't provide ppet; infer it, if there's trailing space. */
1164         if (!ppet) {
1165                 ppet = (const void *)((const __u8 *)mcs_set + mcs_used);
1166                 if (mcs_used < mcs_len)
1167                         ppet_len = mcs_len - mcs_used;
1168                 else
1169                         ppet_len = 0;
1170         }
1171
1172         if (ppet_len && (phy_cap[3] & BIT(15))) {
1173                 printf("%s\t\tPPE Threshold ", pre);
1174                 for (i = 0; i < ppet_len; i++)
1175                         if (ppet[i])
1176                                 printf("0x%02x ", ppet[i]);
1177                 printf("\n");
1178         }
1179 }
1180
1181 void print_iftype_list(const char *name, const char *pfx, struct nlattr *attr)
1182 {
1183         struct nlattr *ift;
1184         int rem;
1185
1186         printf("%s:\n", name);
1187         nla_for_each_nested(ift, attr, rem)
1188                 printf("%s * %s\n", pfx, iftype_name(nla_type(ift)));
1189 }
1190
1191 void print_iftype_line(struct nlattr *attr)
1192 {
1193         struct nlattr *ift;
1194         bool first = true;
1195         int rem;
1196
1197         nla_for_each_nested(ift, attr, rem) {
1198                 if (first)
1199                         first = false;
1200                 else
1201                         printf(", ");
1202                 printf("%s", iftype_name(nla_type(ift)));
1203         }
1204 }
1205
1206 void print_he_info(struct nlattr *nl_iftype)
1207 {
1208         struct nlattr *tb[NL80211_BAND_IFTYPE_ATTR_MAX + 1];
1209         __u16 mac_cap[3] = { 0 };
1210         __u16 phy_cap[6] = { 0 };
1211         __u16 mcs_set[6] = { 0 };
1212         __u8 ppet[25] = { 0 };
1213         size_t len;
1214         int mcs_len = 0, ppet_len = 0;
1215
1216         nla_parse(tb, NL80211_BAND_IFTYPE_ATTR_MAX,
1217                   nla_data(nl_iftype), nla_len(nl_iftype), NULL);
1218
1219         if (!tb[NL80211_BAND_IFTYPE_ATTR_IFTYPES])
1220                 return;
1221
1222         printf("\t\tHE Iftypes: ");
1223         print_iftype_line(tb[NL80211_BAND_IFTYPE_ATTR_IFTYPES]);
1224         printf("\n");
1225
1226         if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC]) {
1227                 len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC]);
1228                 if (len > sizeof(mac_cap))
1229                         len = sizeof(mac_cap);
1230                 memcpy(mac_cap,
1231                        nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC]),
1232                        len);
1233         }
1234
1235         if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]) {
1236                 len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]);
1237
1238                 if (len > sizeof(phy_cap) - 1)
1239                         len = sizeof(phy_cap) - 1;
1240                 memcpy(&((__u8 *)phy_cap)[1],
1241                        nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]),
1242                        len);
1243         }
1244
1245         if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET]) {
1246                 len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET]);
1247                 if (len > sizeof(mcs_set))
1248                         len = sizeof(mcs_set);
1249                 memcpy(mcs_set,
1250                        nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET]),
1251                        len);
1252                 mcs_len = len;
1253         }
1254
1255         if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE]) {
1256                 len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE]);
1257                 if (len > sizeof(ppet))
1258                         len = sizeof(ppet);
1259                 memcpy(ppet,
1260                        nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE]),
1261                        len);
1262                 ppet_len = len;
1263         }
1264
1265         __print_he_capa(mac_cap, phy_cap, mcs_set, mcs_len, ppet, ppet_len,
1266                         true);
1267 }
1268
1269 void print_he_capability(const uint8_t *ie, int len)
1270 {
1271         const void *mac_cap, *phy_cap, *mcs_set;
1272         int mcs_len;
1273         int i = 0;
1274
1275         mac_cap = &ie[i];
1276         i += 6;
1277
1278         phy_cap = &ie[i];
1279         i += 11;
1280
1281         mcs_set = &ie[i];
1282         mcs_len = len - i;
1283
1284         __print_he_capa(mac_cap, phy_cap - 1, mcs_set, mcs_len, NULL, 0, false);
1285 }
1286
1287 void iw_hexdump(const char *prefix, const __u8 *buf, size_t size)
1288 {
1289         size_t i;
1290
1291         printf("%s: ", prefix);
1292         for (i = 0; i < size; i++) {
1293                 if (i && i % 16 == 0)
1294                         printf("\n%s: ", prefix);
1295                 printf("%02x ", buf[i]);
1296         }
1297         printf("\n\n");
1298 }
1299
1300 int get_cf1(const struct chanmode *chanmode, unsigned long freq)
1301 {
1302         unsigned int cf1 = freq, j;
1303         unsigned int bw80[] = { 5180, 5260, 5500, 5580, 5660, 5745,
1304                                 5955, 6035, 6115, 6195, 6275, 6355,
1305                                 6435, 6515, 6595, 6675, 6755, 6835,
1306                                 6195, 6995 };
1307         unsigned int vht160[] = { 5180, 5500 };
1308
1309         switch (chanmode->width) {
1310         case NL80211_CHAN_WIDTH_80:
1311                 /* setup center_freq1 */
1312                 for (j = 0; j < ARRAY_SIZE(bw80); j++) {
1313                         if (freq >= bw80[j] && freq < bw80[j] + 80)
1314                                 break;
1315                 }
1316
1317                 if (j == ARRAY_SIZE(bw80))
1318                         break;
1319
1320                 cf1 = bw80[j] + 30;
1321                 break;
1322         case NL80211_CHAN_WIDTH_160:
1323                 /* setup center_freq1 */
1324                 for (j = 0; j < ARRAY_SIZE(vht160); j++) {
1325                         if (freq >= vht160[j] && freq < vht160[j] + 160)
1326                                 break;
1327                 }
1328
1329                 if (j == ARRAY_SIZE(vht160))
1330                         break;
1331
1332                 cf1 = vht160[j] + 70;
1333                 break;
1334         default:
1335                 cf1 = freq + chanmode->freq1_diff;
1336                 break;
1337         }
1338
1339         return cf1;
1340 }
1341
1342 int parse_random_mac_addr(struct nl_msg *msg, char *addrs)
1343 {
1344         char *a_addr, *a_mask, *sep;
1345         unsigned char addr[ETH_ALEN], mask[ETH_ALEN];
1346
1347         if (!*addrs) {
1348                 /* randomise all but the multicast bit */
1349                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN,
1350                         "\x00\x00\x00\x00\x00\x00");
1351                 NLA_PUT(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
1352                         "\x01\x00\x00\x00\x00\x00");
1353                 return 0;
1354         }
1355
1356         if (*addrs != '=')
1357                 return 1;
1358
1359         addrs++;
1360         sep = strchr(addrs, '/');
1361         a_addr = addrs;
1362
1363         if (!sep)
1364                 return 1;
1365
1366         *sep = 0;
1367         a_mask = sep + 1;
1368         if (mac_addr_a2n(addr, a_addr) || mac_addr_a2n(mask, a_mask))
1369                 return 1;
1370
1371         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1372         NLA_PUT(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN, mask);
1373
1374         return 0;
1375  nla_put_failure:
1376         return -ENOBUFS;
1377 }