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, 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 };
 138
 139 static char modebuf[100];
 140
 141 const char *iftype_name(enum nl80211_iftype iftype)
 142 {
 143         if (iftype <= NL80211_IFTYPE_MAX && ifmodes[iftype])
 144                 return ifmodes[iftype];
 145         sprintf(modebuf, "Unknown mode (%d)", iftype);
 146         return modebuf;
 147 }
 148
 149 static const char *commands[NL80211_CMD_MAX + 1] = {
 150 /*
 151  * sed 's%^\tNL80211_CMD_%%;t n;d;:n s%^\([^=]*\),.*%\t[NL80211_CMD_\1] = \"\L\1\",%;t;d' nl80211.h | grep -v "reserved"
 152  */
 153         [NL80211_CMD_UNSPEC] = "unspec",
 154         [NL80211_CMD_GET_WIPHY] = "get_wiphy",
 155         [NL80211_CMD_SET_WIPHY] = "set_wiphy",
 156         [NL80211_CMD_NEW_WIPHY] = "new_wiphy",
 157         [NL80211_CMD_DEL_WIPHY] = "del_wiphy",
 158         [NL80211_CMD_GET_INTERFACE] = "get_interface",
 159         [NL80211_CMD_SET_INTERFACE] = "set_interface",
 160         [NL80211_CMD_NEW_INTERFACE] = "new_interface",
 161         [NL80211_CMD_DEL_INTERFACE] = "del_interface",
 162         [NL80211_CMD_GET_KEY] = "get_key",
 163         [NL80211_CMD_SET_KEY] = "set_key",
 164         [NL80211_CMD_NEW_KEY] = "new_key",
 165         [NL80211_CMD_DEL_KEY] = "del_key",
 166         [NL80211_CMD_GET_BEACON] = "get_beacon",
 167         [NL80211_CMD_SET_BEACON] = "set_beacon",
 168         [NL80211_CMD_START_AP] = "start_ap",
 169         [NL80211_CMD_STOP_AP] = "stop_ap",
 170         [NL80211_CMD_GET_STATION] = "get_station",
 171         [NL80211_CMD_SET_STATION] = "set_station",
 172         [NL80211_CMD_NEW_STATION] = "new_station",
 173         [NL80211_CMD_DEL_STATION] = "del_station",
 174         [NL80211_CMD_GET_MPATH] = "get_mpath",
 175         [NL80211_CMD_SET_MPATH] = "set_mpath",
 176         [NL80211_CMD_NEW_MPATH] = "new_mpath",
 177         [NL80211_CMD_DEL_MPATH] = "del_mpath",
 178         [NL80211_CMD_SET_BSS] = "set_bss",
 179         [NL80211_CMD_SET_REG] = "set_reg",
 180         [NL80211_CMD_REQ_SET_REG] = "req_set_reg",
 181         [NL80211_CMD_GET_MESH_CONFIG] = "get_mesh_config",
 182         [NL80211_CMD_SET_MESH_CONFIG] = "set_mesh_config",
 183         [NL80211_CMD_GET_REG] = "get_reg",
 184         [NL80211_CMD_GET_SCAN] = "get_scan",
 185         [NL80211_CMD_TRIGGER_SCAN] = "trigger_scan",
 186         [NL80211_CMD_NEW_SCAN_RESULTS] = "new_scan_results",
 187         [NL80211_CMD_SCAN_ABORTED] = "scan_aborted",
 188         [NL80211_CMD_REG_CHANGE] = "reg_change",
 189         [NL80211_CMD_AUTHENTICATE] = "authenticate",
 190         [NL80211_CMD_ASSOCIATE] = "associate",
 191         [NL80211_CMD_DEAUTHENTICATE] = "deauthenticate",
 192         [NL80211_CMD_DISASSOCIATE] = "disassociate",
 193         [NL80211_CMD_MICHAEL_MIC_FAILURE] = "michael_mic_failure",
 194         [NL80211_CMD_REG_BEACON_HINT] = "reg_beacon_hint",
 195         [NL80211_CMD_JOIN_IBSS] = "join_ibss",
 196         [NL80211_CMD_LEAVE_IBSS] = "leave_ibss",
 197         [NL80211_CMD_TESTMODE] = "testmode",
 198         [NL80211_CMD_CONNECT] = "connect",
 199         [NL80211_CMD_ROAM] = "roam",
 200         [NL80211_CMD_DISCONNECT] = "disconnect",
 201         [NL80211_CMD_SET_WIPHY_NETNS] = "set_wiphy_netns",
 202         [NL80211_CMD_GET_SURVEY] = "get_survey",
 203         [NL80211_CMD_NEW_SURVEY_RESULTS] = "new_survey_results",
 204         [NL80211_CMD_SET_PMKSA] = "set_pmksa",
 205         [NL80211_CMD_DEL_PMKSA] = "del_pmksa",
 206         [NL80211_CMD_FLUSH_PMKSA] = "flush_pmksa",
 207         [NL80211_CMD_REMAIN_ON_CHANNEL] = "remain_on_channel",
 208         [NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL] = "cancel_remain_on_channel",
 209         [NL80211_CMD_SET_TX_BITRATE_MASK] = "set_tx_bitrate_mask",
 210         [NL80211_CMD_REGISTER_FRAME] = "register_frame",
 211         [NL80211_CMD_FRAME] = "frame",
 212         [NL80211_CMD_FRAME_TX_STATUS] = "frame_tx_status",
 213         [NL80211_CMD_SET_POWER_SAVE] = "set_power_save",
 214         [NL80211_CMD_GET_POWER_SAVE] = "get_power_save",
 215         [NL80211_CMD_SET_CQM] = "set_cqm",
 216         [NL80211_CMD_NOTIFY_CQM] = "notify_cqm",
 217         [NL80211_CMD_SET_CHANNEL] = "set_channel",
 218         [NL80211_CMD_SET_WDS_PEER] = "set_wds_peer",
 219         [NL80211_CMD_FRAME_WAIT_CANCEL] = "frame_wait_cancel",
 220         [NL80211_CMD_JOIN_MESH] = "join_mesh",
 221         [NL80211_CMD_LEAVE_MESH] = "leave_mesh",
 222         [NL80211_CMD_UNPROT_DEAUTHENTICATE] = "unprot_deauthenticate",
 223         [NL80211_CMD_UNPROT_DISASSOCIATE] = "unprot_disassociate",
 224         [NL80211_CMD_NEW_PEER_CANDIDATE] = "new_peer_candidate",
 225         [NL80211_CMD_GET_WOWLAN] = "get_wowlan",
 226         [NL80211_CMD_SET_WOWLAN] = "set_wowlan",
 227         [NL80211_CMD_START_SCHED_SCAN] = "start_sched_scan",
 228         [NL80211_CMD_STOP_SCHED_SCAN] = "stop_sched_scan",
 229         [NL80211_CMD_SCHED_SCAN_RESULTS] = "sched_scan_results",
 230         [NL80211_CMD_SCHED_SCAN_STOPPED] = "sched_scan_stopped",
 231         [NL80211_CMD_SET_REKEY_OFFLOAD] = "set_rekey_offload",
 232         [NL80211_CMD_PMKSA_CANDIDATE] = "pmksa_candidate",
 233         [NL80211_CMD_TDLS_OPER] = "tdls_oper",
 234         [NL80211_CMD_TDLS_MGMT] = "tdls_mgmt",
 235         [NL80211_CMD_UNEXPECTED_FRAME] = "unexpected_frame",
 236         [NL80211_CMD_PROBE_CLIENT] = "probe_client",
 237         [NL80211_CMD_REGISTER_BEACONS] = "register_beacons",
 238         [NL80211_CMD_UNEXPECTED_4ADDR_FRAME] = "unexpected_4addr_frame",
 239         [NL80211_CMD_SET_NOACK_MAP] = "set_noack_map",
 240         [NL80211_CMD_CH_SWITCH_NOTIFY] = "ch_switch_notify",
 241         [NL80211_CMD_START_P2P_DEVICE] = "start_p2p_device",
 242         [NL80211_CMD_STOP_P2P_DEVICE] = "stop_p2p_device",
 243         [NL80211_CMD_CONN_FAILED] = "conn_failed",
 244         [NL80211_CMD_SET_MCAST_RATE] = "set_mcast_rate",
 245         [NL80211_CMD_SET_MAC_ACL] = "set_mac_acl",
 246         [NL80211_CMD_RADAR_DETECT] = "radar_detect",
 247         [NL80211_CMD_GET_PROTOCOL_FEATURES] = "get_protocol_features",
 248         [NL80211_CMD_UPDATE_FT_IES] = "update_ft_ies",
 249         [NL80211_CMD_FT_EVENT] = "ft_event",
 250         [NL80211_CMD_CRIT_PROTOCOL_START] = "crit_protocol_start",
 251         [NL80211_CMD_CRIT_PROTOCOL_STOP] = "crit_protocol_stop",
 252         [NL80211_CMD_GET_COALESCE] = "get_coalesce",
 253         [NL80211_CMD_SET_COALESCE] = "set_coalesce",
 254         [NL80211_CMD_CHANNEL_SWITCH] = "channel_switch",
 255         [NL80211_CMD_VENDOR] = "vendor",
 256         [NL80211_CMD_SET_QOS_MAP] = "set_qos_map",
 257         [NL80211_CMD_ADD_TX_TS] = "add_tx_ts",
 258         [NL80211_CMD_DEL_TX_TS] = "del_tx_ts",
 259         [NL80211_CMD_GET_MPP] = "get_mpp",
 260         [NL80211_CMD_JOIN_OCB] = "join_ocb",
 261         [NL80211_CMD_LEAVE_OCB] = "leave_ocb",
 262         [NL80211_CMD_CH_SWITCH_STARTED_NOTIFY] = "ch_switch_started_notify",
 263         [NL80211_CMD_TDLS_CHANNEL_SWITCH] = "tdls_channel_switch",
 264         [NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH] = "tdls_cancel_channel_switch",
 265         [NL80211_CMD_WIPHY_REG_CHANGE] = "wiphy_reg_change",
 266         [NL80211_CMD_ABORT_SCAN] = "abort_scan",
 267 };
 268
 269 static char cmdbuf[100];
 270
 271 const char *command_name(enum nl80211_commands cmd)
 272 {
 273         if (cmd <= NL80211_CMD_MAX && commands[cmd])
 274                 return commands[cmd];
 275         sprintf(cmdbuf, "Unknown command (%d)", cmd);
 276         return cmdbuf;
 277 }
 278
 279 int ieee80211_channel_to_frequency(int chan, enum nl80211_band band)
 280 {
 281         /* see 802.11 17.3.8.3.2 and Annex J
 282          * there are overlapping channel numbers in 5GHz and 2GHz bands */
 283         if (chan <= 0)
 284                 return 0; /* not supported */
 285         switch (band) {
 286         case NL80211_BAND_2GHZ:
 287                 if (chan == 14)
 288                         return 2484;
 289                 else if (chan < 14)
 290                         return 2407 + chan * 5;
 291                 break;
 292         case NL80211_BAND_5GHZ:
 293                 if (chan >= 182 && chan <= 196)
 294                         return 4000 + chan * 5;
 295                 else
 296                         return 5000 + chan * 5;
 297                 break;
 298         case NL80211_BAND_60GHZ:
 299                 if (chan < 5)
 300                         return 56160 + chan * 2160;
 301                 break;
 302         default:
 303                 ;
 304         }
 305         return 0; /* not supported */
 306 }
 307
 308 int ieee80211_frequency_to_channel(int freq)
 309 {
 310         /* see 802.11-2007 17.3.8.3.2 and Annex J */
 311         if (freq == 2484)
 312                 return 14;
 313         else if (freq < 2484)
 314                 return (freq - 2407) / 5;
 315         else if (freq >= 4910 && freq <= 4980)
 316                 return (freq - 4000) / 5;
 317         else if (freq <= 45000) /* DMG band lower limit */
 318                 return (freq - 5000) / 5;
 319         else if (freq >= 58320 && freq <= 64800)
 320                 return (freq - 56160) / 2160;
 321         else
 322                 return 0;
 323 }
 324
 325 void print_ssid_escaped(const uint8_t len, const uint8_t *data)
 326 {
 327         int i;
 328
 329         for (i = 0; i < len; i++) {
 330                 if (isprint(data[i]) && data[i] != ' ' && data[i] != '\\')
 331                         printf("%c", data[i]);
 332                 else if (data[i] == ' ' &&
 333                          (i != 0 && i != len -1))
 334                         printf(" ");
 335                 else
 336                         printf("\\x%.2x", data[i]);
 337         }
 338 }
 339
 340 static int hex2num(char digit)
 341 {
 342         if (!isxdigit(digit))
 343                 return -1;
 344         if (isdigit(digit))
 345                 return digit - '0';
 346         return tolower(digit) - 'a' + 10;
 347 }
 348
 349 static int hex2byte(char *hex)
 350 {
 351         int d1, d2;
 352
 353         d1 = hex2num(hex[0]);
 354         if (d1 < 0)
 355                 return -1;
 356         d2 = hex2num(hex[1]);
 357         if (d2 < 0)
 358                 return -1;
 359         return (d1 << 4) | d2;
 360 }
 361
 362 static char *hex2bin(char *hex, char *buf)
 363 {
 364         char *result = buf;
 365         int d;
 366
 367         while (hex[0]) {
 368                 d = hex2byte(hex);
 369                 if (d < 0)
 370                         return NULL;
 371                 buf[0] = d;
 372                 buf++;
 373                 hex += 2;
 374         }
 375
 376         return result;
 377 }
 378
 379 int parse_keys(struct nl_msg *msg, char **argv, int argc)
 380 {
 381         struct nlattr *keys;
 382         int i = 0;
 383         bool have_default = false;
 384         char keybuf[13];
 385
 386         if (!argc)
 387                 return 1;
 388
 389         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
 390
 391         keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
 392         if (!keys)
 393                 return -ENOBUFS;
 394
 395         do {
 396                 char *arg = *argv;
 397                 int pos = 0, keylen;
 398                 struct nlattr *key = nla_nest_start(msg, ++i);
 399                 char *keydata;
 400
 401                 if (!key)
 402                         return -ENOBUFS;
 403
 404                 if (arg[pos] == 'd') {
 405                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
 406                         pos++;
 407                         if (arg[pos] == ':')
 408                                 pos++;
 409                         have_default = true;
 410                 }
 411
 412                 if (!isdigit(arg[pos]))
 413                         goto explain;
 414                 NLA_PUT_U8(msg, NL80211_KEY_IDX, arg[pos++] - '0');
 415                 if (arg[pos++] != ':')
 416                         goto explain;
 417                 keydata = arg + pos;
 418                 switch (strlen(keydata)) {
 419                 case 10:
 420                         keydata = hex2bin(keydata, keybuf);
 421                 case 5:
 422                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC01);
 423                         keylen = 5;
 424                         break;
 425                 case 26:
 426                         keydata = hex2bin(keydata, keybuf);
 427                 case 13:
 428                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC05);
 429                         keylen = 13;
 430                         break;
 431                 default:
 432                         goto explain;
 433                 }
 434
 435                 if (!keydata)
 436                         goto explain;
 437
 438                 NLA_PUT(msg, NL80211_KEY_DATA, keylen, keydata);
 439
 440                 argv++;
 441                 argc--;
 442
 443                 /* one key should be TX key */
 444                 if (!have_default && !argc)
 445                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
 446
 447                 nla_nest_end(msg, key);
 448         } while (argc);
 449
 450         nla_nest_end(msg, keys);
 451
 452         return 0;
 453  nla_put_failure:
 454         return -ENOBUFS;
 455  explain:
 456         fprintf(stderr, "key must be [d:]index:data where\n"
 457                         "  'd:'     means default (transmit) key\n"
 458                         "  'index:' is a single digit (0-3)\n"
 459                         "  'data'   must be 5 or 13 ascii chars\n"
 460                         "           or 10 or 26 hex digits\n"
 461                         "for example: d:2:6162636465 is the same as d:2:abcde\n");
 462         return 2;
 463 }
 464
 465 static void print_mcs_index(const __u8 *mcs)
 466 {
 467         int mcs_bit, prev_bit = -2, prev_cont = 0;
 468
 469         for (mcs_bit = 0; mcs_bit <= 76; mcs_bit++) {
 470                 unsigned int mcs_octet = mcs_bit/8;
 471                 unsigned int MCS_RATE_BIT = 1 << mcs_bit % 8;
 472                 bool mcs_rate_idx_set;
 473
 474                 mcs_rate_idx_set = !!(mcs[mcs_octet] & MCS_RATE_BIT);
 475
 476                 if (!mcs_rate_idx_set)
 477                         continue;
 478
 479                 if (prev_bit != mcs_bit - 1) {
 480                         if (prev_bit != -2)
 481                                 printf("%d, ", prev_bit);
 482                         else
 483                                 printf(" ");
 484                         printf("%d", mcs_bit);
 485                         prev_cont = 0;
 486                 } else if (!prev_cont) {
 487                         printf("-");
 488                         prev_cont = 1;
 489                 }
 490
 491                 prev_bit = mcs_bit;
 492         }
 493
 494         if (prev_cont)
 495                 printf("%d", prev_bit);
 496         printf("\n");
 497 }
 498
 499 /*
 500  * There are only 4 possible values, we just use a case instead of computing it,
 501  * but technically this can also be computed through the formula:
 502  *
 503  * Max AMPDU length = (2 ^ (13 + exponent)) - 1 bytes
 504  */
 505 static __u32 compute_ampdu_length(__u8 exponent)
 506 {
 507         switch (exponent) {
 508         case 0: return 8191;  /* (2 ^(13 + 0)) -1 */
 509         case 1: return 16383; /* (2 ^(13 + 1)) -1 */
 510         case 2: return 32767; /* (2 ^(13 + 2)) -1 */
 511         case 3: return 65535; /* (2 ^(13 + 3)) -1 */
 512         default: return 0;
 513         }
 514 }
 515
 516 static const char *print_ampdu_space(__u8 space)
 517 {
 518         switch (space) {
 519         case 0: return "No restriction";
 520         case 1: return "1/4 usec";
 521         case 2: return "1/2 usec";
 522         case 3: return "1 usec";
 523         case 4: return "2 usec";
 524         case 5: return "4 usec";
 525         case 6: return "8 usec";
 526         case 7: return "16 usec";
 527         default:
 528                 return "BUG (spacing more than 3 bits!)";
 529         }
 530 }
 531
 532 void print_ampdu_length(__u8 exponent)
 533 {
 534         __u32 max_ampdu_length;
 535
 536         max_ampdu_length = compute_ampdu_length(exponent);
 537
 538         if (max_ampdu_length) {
 539                 printf("\t\tMaximum RX AMPDU length %d bytes (exponent: 0x0%02x)\n",
 540                        max_ampdu_length, exponent);
 541         } else {
 542                 printf("\t\tMaximum RX AMPDU length: unrecognized bytes "
 543                        "(exponent: %d)\n", exponent);
 544         }
 545 }
 546
 547 void print_ampdu_spacing(__u8 spacing)
 548 {
 549         printf("\t\tMinimum RX AMPDU time spacing: %s (0x%02x)\n",
 550                print_ampdu_space(spacing), spacing);
 551 }
 552
 553 void print_ht_capability(__u16 cap)
 554 {
 555 #define PRINT_HT_CAP(_cond, _str) \
 556         do { \
 557                 if (_cond) \
 558                         printf("\t\t\t" _str "\n"); \
 559         } while (0)
 560
 561         printf("\t\tCapabilities: 0x%02x\n", cap);
 562
 563         PRINT_HT_CAP((cap & BIT(0)), "RX LDPC");
 564         PRINT_HT_CAP((cap & BIT(1)), "HT20/HT40");
 565         PRINT_HT_CAP(!(cap & BIT(1)), "HT20");
 566
 567         PRINT_HT_CAP(((cap >> 2) & 0x3) == 0, "Static SM Power Save");
 568         PRINT_HT_CAP(((cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
 569         PRINT_HT_CAP(((cap >> 2) & 0x3) == 3, "SM Power Save disabled");
 570
 571         PRINT_HT_CAP((cap & BIT(4)), "RX Greenfield");
 572         PRINT_HT_CAP((cap & BIT(5)), "RX HT20 SGI");
 573         PRINT_HT_CAP((cap & BIT(6)), "RX HT40 SGI");
 574         PRINT_HT_CAP((cap & BIT(7)), "TX STBC");
 575
 576         PRINT_HT_CAP(((cap >> 8) & 0x3) == 0, "No RX STBC");
 577         PRINT_HT_CAP(((cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
 578         PRINT_HT_CAP(((cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
 579         PRINT_HT_CAP(((cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
 580
 581         PRINT_HT_CAP((cap & BIT(10)), "HT Delayed Block Ack");
 582
 583         PRINT_HT_CAP(!(cap & BIT(11)), "Max AMSDU length: 3839 bytes");
 584         PRINT_HT_CAP((cap & BIT(11)), "Max AMSDU length: 7935 bytes");
 585
 586         /*
 587          * For beacons and probe response this would mean the BSS
 588          * does or does not allow the usage of DSSS/CCK HT40.
 589          * Otherwise it means the STA does or does not use
 590          * DSSS/CCK HT40.
 591          */
 592         PRINT_HT_CAP((cap & BIT(12)), "DSSS/CCK HT40");
 593         PRINT_HT_CAP(!(cap & BIT(12)), "No DSSS/CCK HT40");
 594
 595         /* BIT(13) is reserved */
 596
 597         PRINT_HT_CAP((cap & BIT(14)), "40 MHz Intolerant");
 598
 599         PRINT_HT_CAP((cap & BIT(15)), "L-SIG TXOP protection");
 600 #undef PRINT_HT_CAP
 601 }
 602
 603 void print_ht_mcs(const __u8 *mcs)
 604 {
 605         /* As defined in 7.3.2.57.4 Supported MCS Set field */
 606         unsigned int tx_max_num_spatial_streams, max_rx_supp_data_rate;
 607         bool tx_mcs_set_defined, tx_mcs_set_equal, tx_unequal_modulation;
 608
 609         max_rx_supp_data_rate = (mcs[10] | ((mcs[11] & 0x3) << 8));
 610         tx_mcs_set_defined = !!(mcs[12] & (1 << 0));
 611         tx_mcs_set_equal = !(mcs[12] & (1 << 1));
 612         tx_max_num_spatial_streams = ((mcs[12] >> 2) & 3) + 1;
 613         tx_unequal_modulation = !!(mcs[12] & (1 << 4));
 614
 615         if (max_rx_supp_data_rate)
 616                 printf("\t\tHT Max RX data rate: %d Mbps\n", max_rx_supp_data_rate);
 617         /* XXX: else see 9.6.0e.5.3 how to get this I think */
 618
 619         if (tx_mcs_set_defined) {
 620                 if (tx_mcs_set_equal) {
 621                         printf("\t\tHT TX/RX MCS rate indexes supported:");
 622                         print_mcs_index(mcs);
 623                 } else {
 624                         printf("\t\tHT RX MCS rate indexes supported:");
 625                         print_mcs_index(mcs);
 626
 627                         if (tx_unequal_modulation)
 628                                 printf("\t\tTX unequal modulation supported\n");
 629                         else
 630                                 printf("\t\tTX unequal modulation not supported\n");
 631
 632                         printf("\t\tHT TX Max spatial streams: %d\n",
 633                                 tx_max_num_spatial_streams);
 634
 635                         printf("\t\tHT TX MCS rate indexes supported may differ\n");
 636                 }
 637         } else {
 638                 printf("\t\tHT RX MCS rate indexes supported:");
 639                 print_mcs_index(mcs);
 640                 printf("\t\tHT TX MCS rate indexes are undefined\n");
 641         }
 642 }
 643
 644 void print_vht_info(__u32 capa, const __u8 *mcs)
 645 {
 646         __u16 tmp;
 647         int i;
 648
 649         printf("\t\tVHT Capabilities (0x%.8x):\n", capa);
 650
 651 #define PRINT_VHT_CAPA(_bit, _str) \
 652         do { \
 653                 if (capa & BIT(_bit)) \
 654                         printf("\t\t\t" _str "\n"); \
 655         } while (0)
 656
 657         printf("\t\t\tMax MPDU length: ");
 658         switch (capa & 3) {
 659         case 0: printf("3895\n"); break;
 660         case 1: printf("7991\n"); break;
 661         case 2: printf("11454\n"); break;
 662         case 3: printf("(reserved)\n");
 663         }
 664         printf("\t\t\tSupported Channel Width: ");
 665         switch ((capa >> 2) & 3) {
 666         case 0: printf("neither 160 nor 80+80\n"); break;
 667         case 1: printf("160 MHz\n"); break;
 668         case 2: printf("160 MHz, 80+80 MHz\n"); break;
 669         case 3: printf("(reserved)\n");
 670         }
 671         PRINT_VHT_CAPA(4, "RX LDPC");
 672         PRINT_VHT_CAPA(5, "short GI (80 MHz)");
 673         PRINT_VHT_CAPA(6, "short GI (160/80+80 MHz)");
 674         PRINT_VHT_CAPA(7, "TX STBC");
 675         /* RX STBC */
 676         PRINT_VHT_CAPA(11, "SU Beamformer");
 677         PRINT_VHT_CAPA(12, "SU Beamformee");
 678         /* compressed steering */
 679         /* # of sounding dimensions */
 680         PRINT_VHT_CAPA(19, "MU Beamformer");
 681         PRINT_VHT_CAPA(20, "MU Beamformee");
 682         PRINT_VHT_CAPA(21, "VHT TXOP PS");
 683         PRINT_VHT_CAPA(22, "+HTC-VHT");
 684         /* max A-MPDU */
 685         /* VHT link adaptation */
 686         PRINT_VHT_CAPA(28, "RX antenna pattern consistency");
 687         PRINT_VHT_CAPA(29, "TX antenna pattern consistency");
 688
 689         printf("\t\tVHT RX MCS set:\n");
 690         tmp = mcs[0] | (mcs[1] << 8);
 691         for (i = 1; i <= 8; i++) {
 692                 printf("\t\t\t%d streams: ", i);
 693                 switch ((tmp >> ((i-1)*2) ) & 3) {
 694                 case 0: printf("MCS 0-7\n"); break;
 695                 case 1: printf("MCS 0-8\n"); break;
 696                 case 2: printf("MCS 0-9\n"); break;
 697                 case 3: printf("not supported\n"); break;
 698                 }
 699         }
 700         tmp = mcs[2] | (mcs[3] << 8);
 701         printf("\t\tVHT RX highest supported: %d Mbps\n", tmp & 0x1fff);
 702
 703         printf("\t\tVHT TX MCS set:\n");
 704         tmp = mcs[4] | (mcs[5] << 8);
 705         for (i = 1; i <= 8; i++) {
 706                 printf("\t\t\t%d streams: ", i);
 707                 switch ((tmp >> ((i-1)*2) ) & 3) {
 708                 case 0: printf("MCS 0-7\n"); break;
 709                 case 1: printf("MCS 0-8\n"); break;
 710                 case 2: printf("MCS 0-9\n"); break;
 711                 case 3: printf("not supported\n"); break;
 712                 }
 713         }
 714         tmp = mcs[6] | (mcs[7] << 8);
 715         printf("\t\tVHT TX highest supported: %d Mbps\n", tmp & 0x1fff);
 716 }
 717
 718 void iw_hexdump(const char *prefix, const __u8 *buf, size_t size)
 719 {
 720         size_t i;
 721
 722         printf("%s: ", prefix);
 723         for (i = 0; i < size; i++) {
 724                 if (i && i % 16 == 0)
 725                         printf("\n%s: ", prefix);
 726                 printf("%02x ", buf[i]);
 727         }
 728         printf("\n\n");
 729 }
 730
 731 int get_cf1(const struct chanmode *chanmode, unsigned long freq)
 732 {
 733         unsigned int cf1 = freq, j;
 734         unsigned int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
 735
 736         switch (chanmode->width) {
 737         case NL80211_CHAN_WIDTH_80:
 738                 /* setup center_freq1 */
 739                 for (j = 0; j < ARRAY_SIZE(vht80); j++) {
 740                         if (freq >= vht80[j] && freq < vht80[j] + 80)
 741                                 break;
 742                 }
 743
 744                 if (j == ARRAY_SIZE(vht80))
 745                         break;
 746
 747                 cf1 = vht80[j] + 30;
 748                 break;
 749         default:
 750                 cf1 = freq + chanmode->freq1_diff;
 751                 break;
 752         }
 753
 754         return cf1;
 755 }