drivers/net/wireless/mwifiex/join.c

   1 /*
   2  * Marvell Wireless LAN device driver: association and ad-hoc start/join
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "decl.h"
  21 #include "ioctl.h"
  22 #include "util.h"
  23 #include "fw.h"
  24 #include "main.h"
  25 #include "wmm.h"
  26 #include "11n.h"
  27
  28 #define CAPINFO_MASK    (~(BIT(15) | BIT(14) | BIT(12) | BIT(11) | BIT(9)))
  29
  30 /*
  31  * Append a generic IE as a pass through TLV to a TLV buffer.
  32  *
  33  * This function is called from the network join command preparation routine.
  34  *
  35  * If the IE buffer has been setup by the application, this routine appends
  36  * the buffer as a pass through TLV type to the request.
  37  */
  38 static int
  39 mwifiex_cmd_append_generic_ie(struct mwifiex_private *priv, u8 **buffer)
  40 {
  41         int ret_len = 0;
  42         struct mwifiex_ie_types_header ie_header;
  43
  44         /* Null Checks */
  45         if (!buffer)
  46                 return 0;
  47         if (!(*buffer))
  48                 return 0;
  49
  50         /*
  51          * If there is a generic ie buffer setup, append it to the return
  52          *   parameter buffer pointer.
  53          */
  54         if (priv->gen_ie_buf_len) {
  55                 dev_dbg(priv->adapter->dev, "info: %s: append generic %d to %p\n",
  56                                 __func__, priv->gen_ie_buf_len, *buffer);
  57
  58                 /* Wrap the generic IE buffer with a pass through TLV type */
  59                 ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
  60                 ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
  61                 memcpy(*buffer, &ie_header, sizeof(ie_header));
  62
  63                 /* Increment the return size and the return buffer pointer
  64                    param */
  65                 *buffer += sizeof(ie_header);
  66                 ret_len += sizeof(ie_header);
  67
  68                 /* Copy the generic IE buffer to the output buffer, advance
  69                    pointer */
  70                 memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
  71
  72                 /* Increment the return size and the return buffer pointer
  73                    param */
  74                 *buffer += priv->gen_ie_buf_len;
  75                 ret_len += priv->gen_ie_buf_len;
  76
  77                 /* Reset the generic IE buffer */
  78                 priv->gen_ie_buf_len = 0;
  79         }
  80
  81         /* return the length appended to the buffer */
  82         return ret_len;
  83 }
  84
  85 /*
  86  * Append TSF tracking info from the scan table for the target AP.
  87  *
  88  * This function is called from the network join command preparation routine.
  89  *
  90  * The TSF table TSF sent to the firmware contains two TSF values:
  91  *      - The TSF of the target AP from its previous beacon/probe response
  92  *      - The TSF timestamp of our local MAC at the time we observed the
  93  *        beacon/probe response.
  94  *
  95  * The firmware uses the timestamp values to set an initial TSF value
  96  * in the MAC for the new association after a reassociation attempt.
  97  */
  98 static int
  99 mwifiex_cmd_append_tsf_tlv(struct mwifiex_private *priv, u8 **buffer,
 100                            struct mwifiex_bssdescriptor *bss_desc)
 101 {
 102         struct mwifiex_ie_types_tsf_timestamp tsf_tlv;
 103         __le64 tsf_val;
 104
 105         /* Null Checks */
 106         if (buffer == NULL)
 107                 return 0;
 108         if (*buffer == NULL)
 109                 return 0;
 110
 111         memset(&tsf_tlv, 0x00, sizeof(struct mwifiex_ie_types_tsf_timestamp));
 112
 113         tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
 114         tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
 115
 116         memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
 117         *buffer += sizeof(tsf_tlv.header);
 118
 119         /* TSF at the time when beacon/probe_response was received */
 120         tsf_val = cpu_to_le64(bss_desc->network_tsf);
 121         memcpy(*buffer, &tsf_val, sizeof(tsf_val));
 122         *buffer += sizeof(tsf_val);
 123
 124         memcpy(&tsf_val, bss_desc->time_stamp, sizeof(tsf_val));
 125
 126         dev_dbg(priv->adapter->dev, "info: %s: TSF offset calc: %016llx - "
 127                         "%016llx\n", __func__, tsf_val, bss_desc->network_tsf);
 128
 129         memcpy(*buffer, &tsf_val, sizeof(tsf_val));
 130         *buffer += sizeof(tsf_val);
 131
 132         return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
 133 }
 134
 135 /*
 136  * This function finds out the common rates between rate1 and rate2.
 137  *
 138  * It will fill common rates in rate1 as output if found.
 139  *
 140  * NOTE: Setting the MSB of the basic rates needs to be taken
 141  * care of, either before or after calling this function.
 142  */
 143 static int mwifiex_get_common_rates(struct mwifiex_private *priv, u8 *rate1,
 144                                     u32 rate1_size, u8 *rate2, u32 rate2_size)
 145 {
 146         int ret;
 147         u8 *ptr = rate1, *tmp;
 148         u32 i, j;
 149
 150         tmp = kmalloc(rate1_size, GFP_KERNEL);
 151         if (!tmp) {
 152                 dev_err(priv->adapter->dev, "failed to alloc tmp buf\n");
 153                 return -ENOMEM;
 154         }
 155
 156         memcpy(tmp, rate1, rate1_size);
 157         memset(rate1, 0, rate1_size);
 158
 159         for (i = 0; rate2[i] && i < rate2_size; i++) {
 160                 for (j = 0; tmp[j] && j < rate1_size; j++) {
 161                         /* Check common rate, excluding the bit for
 162                            basic rate */
 163                         if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
 164                                 *rate1++ = tmp[j];
 165                                 break;
 166                         }
 167                 }
 168         }
 169
 170         dev_dbg(priv->adapter->dev, "info: Tx data rate set to %#x\n",
 171                                                 priv->data_rate);
 172
 173         if (!priv->is_data_rate_auto) {
 174                 while (*ptr) {
 175                         if ((*ptr & 0x7f) == priv->data_rate) {
 176                                 ret = 0;
 177                                 goto done;
 178                         }
 179                         ptr++;
 180                 }
 181                 dev_err(priv->adapter->dev, "previously set fixed data rate %#x"
 182                         " is not compatible with the network\n",
 183                         priv->data_rate);
 184
 185                 ret = -1;
 186                 goto done;
 187         }
 188
 189         ret = 0;
 190 done:
 191         kfree(tmp);
 192         return ret;
 193 }
 194
 195 /*
 196  * This function creates the intersection of the rates supported by a
 197  * target BSS and our adapter settings for use in an assoc/join command.
 198  */
 199 static int
 200 mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
 201                                  struct mwifiex_bssdescriptor *bss_desc,
 202                                  u8 *out_rates, u32 *out_rates_size)
 203 {
 204         u8 card_rates[MWIFIEX_SUPPORTED_RATES];
 205         u32 card_rates_size;
 206
 207         /* Copy AP supported rates */
 208         memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
 209         /* Get the STA supported rates */
 210         card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
 211         /* Get the common rates between AP and STA supported rates */
 212         if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
 213                                      card_rates, card_rates_size)) {
 214                 *out_rates_size = 0;
 215                 dev_err(priv->adapter->dev, "%s: cannot get common rates\n",
 216                                                 __func__);
 217                 return -1;
 218         }
 219
 220         *out_rates_size =
 221                 min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
 222
 223         return 0;
 224 }
 225
 226 /*
 227  * This function updates the scan entry TSF timestamps to reflect
 228  * a new association.
 229  */
 230 static void
 231 mwifiex_update_tsf_timestamps(struct mwifiex_private *priv,
 232                               struct mwifiex_bssdescriptor *new_bss_desc)
 233 {
 234         struct mwifiex_adapter *adapter = priv->adapter;
 235         u32 table_idx;
 236         long long new_tsf_base;
 237         signed long long tsf_delta;
 238
 239         memcpy(&new_tsf_base, new_bss_desc->time_stamp, sizeof(new_tsf_base));
 240
 241         tsf_delta = new_tsf_base - new_bss_desc->network_tsf;
 242
 243         dev_dbg(adapter->dev, "info: TSF: update TSF timestamps, "
 244                 "0x%016llx -> 0x%016llx\n",
 245                new_bss_desc->network_tsf, new_tsf_base);
 246
 247         for (table_idx = 0; table_idx < adapter->num_in_scan_table;
 248              table_idx++)
 249                 adapter->scan_table[table_idx].network_tsf += tsf_delta;
 250 }
 251
 252 /*
 253  * This function appends a WAPI IE.
 254  *
 255  * This function is called from the network join command preparation routine.
 256  *
 257  * If the IE buffer has been setup by the application, this routine appends
 258  * the buffer as a WAPI TLV type to the request.
 259  */
 260 static int
 261 mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
 262 {
 263         int retLen = 0;
 264         struct mwifiex_ie_types_header ie_header;
 265
 266         /* Null Checks */
 267         if (buffer == NULL)
 268                 return 0;
 269         if (*buffer == NULL)
 270                 return 0;
 271
 272         /*
 273          * If there is a wapi ie buffer setup, append it to the return
 274          *   parameter buffer pointer.
 275          */
 276         if (priv->wapi_ie_len) {
 277                 dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
 278                                 priv->wapi_ie_len, *buffer);
 279
 280                 /* Wrap the generic IE buffer with a pass through TLV type */
 281                 ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
 282                 ie_header.len = cpu_to_le16(priv->wapi_ie_len);
 283                 memcpy(*buffer, &ie_header, sizeof(ie_header));
 284
 285                 /* Increment the return size and the return buffer pointer
 286                    param */
 287                 *buffer += sizeof(ie_header);
 288                 retLen += sizeof(ie_header);
 289
 290                 /* Copy the wapi IE buffer to the output buffer, advance
 291                    pointer */
 292                 memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
 293
 294                 /* Increment the return size and the return buffer pointer
 295                    param */
 296                 *buffer += priv->wapi_ie_len;
 297                 retLen += priv->wapi_ie_len;
 298
 299         }
 300         /* return the length appended to the buffer */
 301         return retLen;
 302 }
 303
 304 /*
 305  * This function appends rsn ie tlv for wpa/wpa2 security modes.
 306  * It is called from the network join command preparation routine.
 307  */
 308 static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
 309                                           u8 **buffer)
 310 {
 311         struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
 312         int rsn_ie_len;
 313
 314         if (!buffer || !(*buffer))
 315                 return 0;
 316
 317         rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
 318         rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
 319         rsn_ie_tlv->header.type = cpu_to_le16(
 320                                  le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
 321         rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
 322         rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
 323                                                         & 0x00FF);
 324         if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
 325                 memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
 326                                         le16_to_cpu(rsn_ie_tlv->header.len));
 327         else
 328                 return -1;
 329
 330         rsn_ie_len = sizeof(rsn_ie_tlv->header) +
 331                                         le16_to_cpu(rsn_ie_tlv->header.len);
 332         *buffer += rsn_ie_len;
 333
 334         return rsn_ie_len;
 335 }
 336
 337 /*
 338  * This function prepares command for association.
 339  *
 340  * This sets the following parameters -
 341  *      - Peer MAC address
 342  *      - Listen interval
 343  *      - Beacon interval
 344  *      - Capability information
 345  *
 346  * ...and the following TLVs, as required -
 347  *      - SSID TLV
 348  *      - PHY TLV
 349  *      - SS TLV
 350  *      - Rates TLV
 351  *      - Authentication TLV
 352  *      - Channel TLV
 353  *      - WPA/WPA2 IE
 354  *      - 11n TLV
 355  *      - Vendor specific TLV
 356  *      - WMM TLV
 357  *      - WAPI IE
 358  *      - Generic IE
 359  *      - TSF TLV
 360  *
 361  * Preparation also includes -
 362  *      - Setting command ID and proper size
 363  *      - Ensuring correct endian-ness
 364  */
 365 int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
 366                                  struct host_cmd_ds_command *cmd,
 367                                  struct mwifiex_bssdescriptor *bss_desc)
 368 {
 369         struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
 370         struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
 371         struct mwifiex_ie_types_phy_param_set *phy_tlv;
 372         struct mwifiex_ie_types_ss_param_set *ss_tlv;
 373         struct mwifiex_ie_types_rates_param_set *rates_tlv;
 374         struct mwifiex_ie_types_auth_type *auth_tlv;
 375         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 376         u8 rates[MWIFIEX_SUPPORTED_RATES];
 377         u32 rates_size;
 378         u16 tmp_cap;
 379         u8 *pos;
 380         int rsn_ie_len = 0;
 381
 382         pos = (u8 *) assoc;
 383
 384         mwifiex_cfg_tx_buf(priv, bss_desc);
 385
 386         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
 387
 388         /* Save so we know which BSS Desc to use in the response handler */
 389         priv->attempted_bss_desc = bss_desc;
 390
 391         memcpy(assoc->peer_sta_addr,
 392                bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
 393         pos += sizeof(assoc->peer_sta_addr);
 394
 395         /* Set the listen interval */
 396         assoc->listen_interval = cpu_to_le16(priv->listen_interval);
 397         /* Set the beacon period */
 398         assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
 399
 400         pos += sizeof(assoc->cap_info_bitmap);
 401         pos += sizeof(assoc->listen_interval);
 402         pos += sizeof(assoc->beacon_period);
 403         pos += sizeof(assoc->dtim_period);
 404
 405         ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
 406         ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
 407         ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
 408         memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
 409                 le16_to_cpu(ssid_tlv->header.len));
 410         pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
 411
 412         phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
 413         phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
 414         phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
 415         memcpy(&phy_tlv->fh_ds.ds_param_set,
 416                &bss_desc->phy_param_set.ds_param_set.current_chan,
 417                sizeof(phy_tlv->fh_ds.ds_param_set));
 418         pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
 419
 420         ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
 421         ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
 422         ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
 423         pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
 424
 425         /* Get the common rates supported between the driver and the BSS Desc */
 426         if (mwifiex_setup_rates_from_bssdesc
 427             (priv, bss_desc, rates, &rates_size))
 428                 return -1;
 429
 430         /* Save the data rates into Current BSS state structure */
 431         priv->curr_bss_params.num_of_rates = rates_size;
 432         memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
 433
 434         /* Setup the Rates TLV in the association command */
 435         rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
 436         rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
 437         rates_tlv->header.len = cpu_to_le16((u16) rates_size);
 438         memcpy(rates_tlv->rates, rates, rates_size);
 439         pos += sizeof(rates_tlv->header) + rates_size;
 440         dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
 441                                         rates_size);
 442
 443         /* Add the Authentication type to be used for Auth frames */
 444         auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
 445         auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 446         auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
 447         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 448                 auth_tlv->auth_type = cpu_to_le16(
 449                                 (u16) priv->sec_info.authentication_mode);
 450         else
 451                 auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
 452
 453         pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
 454
 455         if (IS_SUPPORT_MULTI_BANDS(priv->adapter)
 456             && !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
 457                 && (!bss_desc->disable_11n)
 458                  && (priv->adapter->config_bands & BAND_GN
 459                      || priv->adapter->config_bands & BAND_AN)
 460                  && (bss_desc->bcn_ht_cap)
 461             )
 462                 ) {
 463                 /* Append a channel TLV for the channel the attempted AP was
 464                    found on */
 465                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 466                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 467                 chan_tlv->header.len =
 468                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 469
 470                 memset(chan_tlv->chan_scan_param, 0x00,
 471                        sizeof(struct mwifiex_chan_scan_param_set));
 472                 chan_tlv->chan_scan_param[0].chan_number =
 473                         (bss_desc->phy_param_set.ds_param_set.current_chan);
 474                 dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
 475                        chan_tlv->chan_scan_param[0].chan_number);
 476
 477                 chan_tlv->chan_scan_param[0].radio_type =
 478                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 479
 480                 dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
 481                        chan_tlv->chan_scan_param[0].radio_type);
 482                 pos += sizeof(chan_tlv->header) +
 483                         sizeof(struct mwifiex_chan_scan_param_set);
 484         }
 485
 486         if (!priv->wps.session_enable) {
 487                 if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 488                         rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 489
 490                 if (rsn_ie_len == -1)
 491                         return -1;
 492         }
 493
 494         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
 495                 && (!bss_desc->disable_11n)
 496             && (priv->adapter->config_bands & BAND_GN
 497                 || priv->adapter->config_bands & BAND_AN))
 498                 mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
 499
 500         /* Append vendor specific IE TLV */
 501         mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
 502
 503         mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
 504                                             bss_desc->bcn_ht_cap);
 505         if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
 506                 mwifiex_cmd_append_wapi_ie(priv, &pos);
 507
 508
 509         mwifiex_cmd_append_generic_ie(priv, &pos);
 510
 511         mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
 512
 513         cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
 514
 515         /* Set the Capability info at last */
 516         tmp_cap = bss_desc->cap_info_bitmap;
 517
 518         if (priv->adapter->config_bands == BAND_B)
 519                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 520
 521         tmp_cap &= CAPINFO_MASK;
 522         dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
 523                tmp_cap, CAPINFO_MASK);
 524         assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
 525
 526         return 0;
 527 }
 528
 529 /*
 530  * Association firmware command response handler
 531  *
 532  * The response buffer for the association command has the following
 533  * memory layout.
 534  *
 535  * For cases where an association response was not received (indicated
 536  * by the CapInfo and AId field):
 537  *
 538  *     .------------------------------------------------------------.
 539  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 540  *     .------------------------------------------------------------.
 541  *     |  cap_info/Error Return(t_u16):                             |
 542  *     |           0xFFFF(-1): Internal error                       |
 543  *     |           0xFFFE(-2): Authentication unhandled message     |
 544  *     |           0xFFFD(-3): Authentication refused               |
 545  *     |           0xFFFC(-4): Timeout waiting for AP response      |
 546  *     .------------------------------------------------------------.
 547  *     |  status_code(t_u16):                                       |
 548  *     |        If cap_info is -1:                                  |
 549  *     |           An internal firmware failure prevented the       |
 550  *     |           command from being processed.  The status_code   |
 551  *     |           will be set to 1.                                |
 552  *     |                                                            |
 553  *     |        If cap_info is -2:                                  |
 554  *     |           An authentication frame was received but was     |
 555  *     |           not handled by the firmware.  IEEE Status        |
 556  *     |           code for the failure is returned.                |
 557  *     |                                                            |
 558  *     |        If cap_info is -3:                                  |
 559  *     |           An authentication frame was received and the     |
 560  *     |           status_code is the IEEE Status reported in the   |
 561  *     |           response.                                        |
 562  *     |                                                            |
 563  *     |        If cap_info is -4:                                  |
 564  *     |           (1) Association response timeout                 |
 565  *     |           (2) Authentication response timeout              |
 566  *     .------------------------------------------------------------.
 567  *     |  a_id(t_u16): 0xFFFF                                       |
 568  *     .------------------------------------------------------------.
 569  *
 570  *
 571  * For cases where an association response was received, the IEEE
 572  * standard association response frame is returned:
 573  *
 574  *     .------------------------------------------------------------.
 575  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 576  *     .------------------------------------------------------------.
 577  *     |  cap_info(t_u16): IEEE Capability                          |
 578  *     .------------------------------------------------------------.
 579  *     |  status_code(t_u16): IEEE Status Code                      |
 580  *     .------------------------------------------------------------.
 581  *     |  a_id(t_u16): IEEE Association ID                          |
 582  *     .------------------------------------------------------------.
 583  *     |  IEEE IEs(variable): Any received IEs comprising the       |
 584  *     |                      remaining portion of a received       |
 585  *     |                      association response frame.           |
 586  *     .------------------------------------------------------------.
 587  *
 588  * For simplistic handling, the status_code field can be used to determine
 589  * an association success (0) or failure (non-zero).
 590  */
 591 int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
 592                              struct host_cmd_ds_command *resp)
 593 {
 594         struct mwifiex_adapter *adapter = priv->adapter;
 595         int ret = 0;
 596         struct ieee_types_assoc_rsp *assoc_rsp;
 597         struct mwifiex_bssdescriptor *bss_desc;
 598         u8 enable_data = true;
 599
 600         assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
 601
 602         priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
 603                                      sizeof(priv->assoc_rsp_buf));
 604
 605         memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
 606
 607         if (le16_to_cpu(assoc_rsp->status_code)) {
 608                 priv->adapter->dbg.num_cmd_assoc_failure++;
 609                 dev_err(priv->adapter->dev, "ASSOC_RESP: association failed, "
 610                        "status code = %d, error = 0x%x, a_id = 0x%x\n",
 611                        le16_to_cpu(assoc_rsp->status_code),
 612                        le16_to_cpu(assoc_rsp->cap_info_bitmap),
 613                        le16_to_cpu(assoc_rsp->a_id));
 614
 615                 ret = -1;
 616                 goto done;
 617         }
 618
 619         /* Send a Media Connected event, according to the Spec */
 620         priv->media_connected = true;
 621
 622         priv->adapter->ps_state = PS_STATE_AWAKE;
 623         priv->adapter->pps_uapsd_mode = false;
 624         priv->adapter->tx_lock_flag = false;
 625
 626         /* Set the attempted BSSID Index to current */
 627         bss_desc = priv->attempted_bss_desc;
 628
 629         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
 630                                                 bss_desc->ssid.ssid);
 631
 632         /* Make a copy of current BSSID descriptor */
 633         memcpy(&priv->curr_bss_params.bss_descriptor,
 634                bss_desc, sizeof(struct mwifiex_bssdescriptor));
 635
 636         /* Update curr_bss_params */
 637         priv->curr_bss_params.bss_descriptor.channel
 638                 = bss_desc->phy_param_set.ds_param_set.current_chan;
 639
 640         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
 641
 642         /*
 643          * Adjust the timestamps in the scan table to be relative to the newly
 644          * associated AP's TSF
 645          */
 646         mwifiex_update_tsf_timestamps(priv, bss_desc);
 647
 648         if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
 649                 priv->curr_bss_params.wmm_enabled = true;
 650         else
 651                 priv->curr_bss_params.wmm_enabled = false;
 652
 653         if ((priv->wmm_required || bss_desc->bcn_ht_cap)
 654                         && priv->curr_bss_params.wmm_enabled)
 655                 priv->wmm_enabled = true;
 656         else
 657                 priv->wmm_enabled = false;
 658
 659         priv->curr_bss_params.wmm_uapsd_enabled = false;
 660
 661         if (priv->wmm_enabled)
 662                 priv->curr_bss_params.wmm_uapsd_enabled
 663                         = ((bss_desc->wmm_ie.qos_info_bitmap &
 664                                 IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
 665
 666         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
 667                priv->curr_pkt_filter);
 668         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 669                 priv->wpa_is_gtk_set = false;
 670
 671         if (priv->wmm_enabled) {
 672                 /* Don't re-enable carrier until we get the WMM_GET_STATUS
 673                    event */
 674                 enable_data = false;
 675         } else {
 676                 /* Since WMM is not enabled, setup the queues with the
 677                    defaults */
 678                 mwifiex_wmm_setup_queue_priorities(priv, NULL);
 679                 mwifiex_wmm_setup_ac_downgrade(priv);
 680         }
 681
 682         if (enable_data)
 683                 dev_dbg(priv->adapter->dev,
 684                         "info: post association, re-enabling data flow\n");
 685
 686         /* Reset SNR/NF/RSSI values */
 687         priv->data_rssi_last = 0;
 688         priv->data_nf_last = 0;
 689         priv->data_rssi_avg = 0;
 690         priv->data_nf_avg = 0;
 691         priv->bcn_rssi_last = 0;
 692         priv->bcn_nf_last = 0;
 693         priv->bcn_rssi_avg = 0;
 694         priv->bcn_nf_avg = 0;
 695         priv->rxpd_rate = 0;
 696         priv->rxpd_htinfo = 0;
 697
 698         mwifiex_save_curr_bcn(priv);
 699
 700         priv->adapter->dbg.num_cmd_assoc_success++;
 701
 702         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
 703
 704         /* Add the ra_list here for infra mode as there will be only 1 ra
 705            always */
 706         mwifiex_ralist_add(priv,
 707                            priv->curr_bss_params.bss_descriptor.mac_address);
 708
 709         if (!netif_carrier_ok(priv->netdev))
 710                 netif_carrier_on(priv->netdev);
 711         if (netif_queue_stopped(priv->netdev))
 712                 netif_wake_queue(priv->netdev);
 713
 714         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 715                 priv->scan_block = true;
 716
 717 done:
 718         /* Need to indicate IOCTL complete */
 719         if (adapter->curr_cmd->wait_q_enabled) {
 720                 if (ret)
 721                         adapter->cmd_wait_q.status = -1;
 722                 else
 723                         adapter->cmd_wait_q.status = 0;
 724         }
 725
 726         return ret;
 727 }
 728
 729 /*
 730  * This function prepares command for ad-hoc start.
 731  *
 732  * Driver will fill up SSID, BSS mode, IBSS parameters, physical
 733  * parameters, probe delay, and capability information. Firmware
 734  * will fill up beacon period, basic rates and operational rates.
 735  *
 736  * In addition, the following TLVs are added -
 737  *      - Channel TLV
 738  *      - Vendor specific IE
 739  *      - WPA/WPA2 IE
 740  *      - HT Capabilities IE
 741  *      - HT Information IE
 742  *
 743  * Preparation also includes -
 744  *      - Setting command ID and proper size
 745  *      - Ensuring correct endian-ness
 746  */
 747 int
 748 mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 749                                 struct host_cmd_ds_command *cmd,
 750                                 struct mwifiex_802_11_ssid *req_ssid)
 751 {
 752         int rsn_ie_len = 0;
 753         struct mwifiex_adapter *adapter = priv->adapter;
 754         struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
 755                 &cmd->params.adhoc_start;
 756         struct mwifiex_bssdescriptor *bss_desc;
 757         u32 cmd_append_size = 0;
 758         u32 i;
 759         u16 tmp_cap;
 760         uint16_t ht_cap_info;
 761         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 762
 763         struct mwifiex_ie_types_htcap *ht_cap;
 764         struct mwifiex_ie_types_htinfo *ht_info;
 765         u8 *pos = (u8 *) adhoc_start +
 766                         sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
 767
 768         if (!adapter)
 769                 return -1;
 770
 771         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
 772
 773         bss_desc = &priv->curr_bss_params.bss_descriptor;
 774         priv->attempted_bss_desc = bss_desc;
 775
 776         /*
 777          * Fill in the parameters for 2 data structures:
 778          *   1. struct host_cmd_ds_802_11_ad_hoc_start command
 779          *   2. bss_desc
 780          * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
 781          * probe delay, and Cap info.
 782          * Firmware will fill up beacon period, Basic rates
 783          * and operational rates.
 784          */
 785
 786         memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
 787
 788         memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
 789
 790         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
 791                                 adhoc_start->ssid);
 792
 793         memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
 794         memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
 795
 796         bss_desc->ssid.ssid_len = req_ssid->ssid_len;
 797
 798         /* Set the BSS mode */
 799         adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
 800         bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 801         adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
 802         bss_desc->beacon_period = priv->beacon_period;
 803
 804         /* Set Physical param set */
 805 /* Parameter IE Id */
 806 #define DS_PARA_IE_ID   3
 807 /* Parameter IE length */
 808 #define DS_PARA_IE_LEN  1
 809
 810         adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
 811         adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
 812
 813         if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 814                         (priv, adapter->adhoc_start_band, (u16)
 815                                 priv->adhoc_channel)) {
 816                 struct mwifiex_chan_freq_power *cfp;
 817                 cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211(priv,
 818                                 adapter->adhoc_start_band, FIRST_VALID_CHANNEL);
 819                 if (cfp)
 820                         priv->adhoc_channel = (u8) cfp->channel;
 821         }
 822
 823         if (!priv->adhoc_channel) {
 824                 dev_err(adapter->dev, "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
 825                 return -1;
 826         }
 827
 828         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
 829                                 priv->adhoc_channel);
 830
 831         priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
 832         priv->curr_bss_params.band = adapter->adhoc_start_band;
 833
 834         bss_desc->channel = priv->adhoc_channel;
 835         adhoc_start->phy_param_set.ds_param_set.current_chan =
 836                 priv->adhoc_channel;
 837
 838         memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
 839                sizeof(union ieee_types_phy_param_set));
 840
 841         /* Set IBSS param set */
 842 /* IBSS parameter IE Id */
 843 #define IBSS_PARA_IE_ID   6
 844 /* IBSS parameter IE length */
 845 #define IBSS_PARA_IE_LEN  2
 846
 847         adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
 848         adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
 849         adhoc_start->ss_param_set.ibss_param_set.atim_window
 850                 = cpu_to_le16(priv->atim_window);
 851         memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
 852                sizeof(union ieee_types_ss_param_set));
 853
 854         /* Set Capability info */
 855         bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
 856         tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
 857         tmp_cap &= ~WLAN_CAPABILITY_ESS;
 858         tmp_cap |= WLAN_CAPABILITY_IBSS;
 859
 860         /* Set up privacy in bss_desc */
 861         if (priv->sec_info.encryption_mode) {
 862                 /* Ad-Hoc capability privacy on */
 863                 dev_dbg(adapter->dev,
 864                         "info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
 865                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 866                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
 867         } else {
 868                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: wep_status NOT set,"
 869                                 " setting privacy to ACCEPT ALL\n");
 870                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 871         }
 872
 873         memset(adhoc_start->DataRate, 0, sizeof(adhoc_start->DataRate));
 874         mwifiex_get_active_data_rates(priv, adhoc_start->DataRate);
 875         if ((adapter->adhoc_start_band & BAND_G) &&
 876             (priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
 877                 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 878                                              HostCmd_ACT_GEN_SET, 0,
 879                                              &priv->curr_pkt_filter)) {
 880                         dev_err(adapter->dev,
 881                                "ADHOC_S_CMD: G Protection config failed\n");
 882                         return -1;
 883                 }
 884         }
 885         /* Find the last non zero */
 886         for (i = 0; i < sizeof(adhoc_start->DataRate) &&
 887                         adhoc_start->DataRate[i];
 888                         i++)
 889                         ;
 890
 891         priv->curr_bss_params.num_of_rates = i;
 892
 893         /* Copy the ad-hoc creating rates into Current BSS rate structure */
 894         memcpy(&priv->curr_bss_params.data_rates,
 895                &adhoc_start->DataRate, priv->curr_bss_params.num_of_rates);
 896
 897         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%02x %02x %02x %02x\n",
 898                adhoc_start->DataRate[0], adhoc_start->DataRate[1],
 899                adhoc_start->DataRate[2], adhoc_start->DataRate[3]);
 900
 901         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
 902
 903         if (IS_SUPPORT_MULTI_BANDS(adapter)) {
 904                 /* Append a channel TLV */
 905                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 906                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 907                 chan_tlv->header.len =
 908                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 909
 910                 memset(chan_tlv->chan_scan_param, 0x00,
 911                        sizeof(struct mwifiex_chan_scan_param_set));
 912                 chan_tlv->chan_scan_param[0].chan_number =
 913                         (u8) priv->curr_bss_params.bss_descriptor.channel;
 914
 915                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
 916                        chan_tlv->chan_scan_param[0].chan_number);
 917
 918                 chan_tlv->chan_scan_param[0].radio_type
 919                        = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 920                 if (adapter->adhoc_start_band & BAND_GN
 921                     || adapter->adhoc_start_band & BAND_AN) {
 922                         if (adapter->chan_offset == SEC_CHANNEL_ABOVE)
 923                                 chan_tlv->chan_scan_param[0].radio_type |=
 924                                         SECOND_CHANNEL_ABOVE;
 925                         else if (adapter->chan_offset == SEC_CHANNEL_BELOW)
 926                                 chan_tlv->chan_scan_param[0].radio_type |=
 927                                         SECOND_CHANNEL_BELOW;
 928                 }
 929                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
 930                        chan_tlv->chan_scan_param[0].radio_type);
 931                 pos += sizeof(chan_tlv->header) +
 932                         sizeof(struct mwifiex_chan_scan_param_set);
 933                 cmd_append_size +=
 934                         sizeof(chan_tlv->header) +
 935                         sizeof(struct mwifiex_chan_scan_param_set);
 936         }
 937
 938         /* Append vendor specific IE TLV */
 939         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
 940                                 MWIFIEX_VSIE_MASK_ADHOC, &pos);
 941
 942         if (priv->sec_info.wpa_enabled) {
 943                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 944                 if (rsn_ie_len == -1)
 945                         return -1;
 946                 cmd_append_size += rsn_ie_len;
 947         }
 948
 949         if (adapter->adhoc_11n_enabled) {
 950                 {
 951                         ht_cap = (struct mwifiex_ie_types_htcap *) pos;
 952                         memset(ht_cap, 0,
 953                                sizeof(struct mwifiex_ie_types_htcap));
 954                         ht_cap->header.type =
 955                                 cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 956                         ht_cap->header.len =
 957                                cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 958                         ht_cap_info = le16_to_cpu(ht_cap->ht_cap.cap_info);
 959
 960                         ht_cap_info |= IEEE80211_HT_CAP_SGI_20;
 961                         if (adapter->chan_offset) {
 962                                 ht_cap_info |= IEEE80211_HT_CAP_SGI_40;
 963                                 ht_cap_info |= IEEE80211_HT_CAP_DSSSCCK40;
 964                                 ht_cap_info |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 965                                 SETHT_MCS32(ht_cap->ht_cap.mcs.rx_mask);
 966                         }
 967
 968                         ht_cap->ht_cap.ampdu_params_info
 969                                         = IEEE80211_HT_MAX_AMPDU_64K;
 970                         ht_cap->ht_cap.mcs.rx_mask[0] = 0xff;
 971                         pos += sizeof(struct mwifiex_ie_types_htcap);
 972                         cmd_append_size +=
 973                                 sizeof(struct mwifiex_ie_types_htcap);
 974                 }
 975                 {
 976                         ht_info = (struct mwifiex_ie_types_htinfo *) pos;
 977                         memset(ht_info, 0,
 978                                sizeof(struct mwifiex_ie_types_htinfo));
 979                         ht_info->header.type =
 980                                 cpu_to_le16(WLAN_EID_HT_INFORMATION);
 981                         ht_info->header.len =
 982                                 cpu_to_le16(sizeof(struct ieee80211_ht_info));
 983                         ht_info->ht_info.control_chan =
 984                                 (u8) priv->curr_bss_params.bss_descriptor.
 985                                 channel;
 986                         if (adapter->chan_offset) {
 987                                 ht_info->ht_info.ht_param =
 988                                         adapter->chan_offset;
 989                                 ht_info->ht_info.ht_param |=
 990                                         IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
 991                         }
 992                         ht_info->ht_info.operation_mode =
 993                              cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 994                         ht_info->ht_info.basic_set[0] = 0xff;
 995                         pos += sizeof(struct mwifiex_ie_types_htinfo);
 996                         cmd_append_size +=
 997                                 sizeof(struct mwifiex_ie_types_htinfo);
 998                 }
 999         }
1000
1001         cmd->size = cpu_to_le16((u16)
1002                             (sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
1003                              + S_DS_GEN + cmd_append_size));
1004
1005         if (adapter->adhoc_start_band == BAND_B)
1006                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
1007         else
1008                 tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
1009
1010         adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
1011
1012         return 0;
1013 }
1014
1015 /*
1016  * This function prepares command for ad-hoc join.
1017  *
1018  * Most of the parameters are set up by copying from the target BSS descriptor
1019  * from the scan response.
1020  *
1021  * In addition, the following TLVs are added -
1022  *      - Channel TLV
1023  *      - Vendor specific IE
1024  *      - WPA/WPA2 IE
1025  *      - 11n IE
1026  *
1027  * Preparation also includes -
1028  *      - Setting command ID and proper size
1029  *      - Ensuring correct endian-ness
1030  */
1031 int
1032 mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
1033                                struct host_cmd_ds_command *cmd,
1034                                struct mwifiex_bssdescriptor *bss_desc)
1035 {
1036         int rsn_ie_len = 0;
1037         struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
1038                 &cmd->params.adhoc_join;
1039         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
1040         u32 cmd_append_size = 0;
1041         u16 tmp_cap;
1042         u32 i, rates_size = 0;
1043         u16 curr_pkt_filter;
1044         u8 *pos =
1045                 (u8 *) adhoc_join +
1046                 sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
1047
1048 /* Use G protection */
1049 #define USE_G_PROTECTION        0x02
1050         if (bss_desc->erp_flags & USE_G_PROTECTION) {
1051                 curr_pkt_filter =
1052                         priv->
1053                         curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
1054
1055                 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
1056                                              HostCmd_ACT_GEN_SET, 0,
1057                                              &curr_pkt_filter)) {
1058                         dev_err(priv->adapter->dev,
1059                                "ADHOC_J_CMD: G Protection config failed\n");
1060                         return -1;
1061                 }
1062         }
1063
1064         priv->attempted_bss_desc = bss_desc;
1065
1066         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
1067
1068         adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
1069
1070         adhoc_join->bss_descriptor.beacon_period
1071                 = cpu_to_le16(bss_desc->beacon_period);
1072
1073         memcpy(&adhoc_join->bss_descriptor.bssid,
1074                &bss_desc->mac_address, ETH_ALEN);
1075
1076         memcpy(&adhoc_join->bss_descriptor.ssid,
1077                &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
1078
1079         memcpy(&adhoc_join->bss_descriptor.phy_param_set,
1080                &bss_desc->phy_param_set,
1081                sizeof(union ieee_types_phy_param_set));
1082
1083         memcpy(&adhoc_join->bss_descriptor.ss_param_set,
1084                &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
1085
1086         tmp_cap = bss_desc->cap_info_bitmap;
1087
1088         tmp_cap &= CAPINFO_MASK;
1089
1090         dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: tmp_cap=%4X"
1091                         " CAPINFO_MASK=%4lX\n", tmp_cap, CAPINFO_MASK);
1092
1093         /* Information on BSSID descriptor passed to FW */
1094         dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID = %pM, SSID = %s\n",
1095                                 adhoc_join->bss_descriptor.bssid,
1096                                 adhoc_join->bss_descriptor.ssid);
1097
1098         for (i = 0; bss_desc->supported_rates[i] &&
1099                         i < MWIFIEX_SUPPORTED_RATES;
1100                         i++)
1101                         ;
1102         rates_size = i;
1103
1104         /* Copy Data Rates from the Rates recorded in scan response */
1105         memset(adhoc_join->bss_descriptor.data_rates, 0,
1106                sizeof(adhoc_join->bss_descriptor.data_rates));
1107         memcpy(adhoc_join->bss_descriptor.data_rates,
1108                bss_desc->supported_rates, rates_size);
1109
1110         /* Copy the adhoc join rates into Current BSS state structure */
1111         priv->curr_bss_params.num_of_rates = rates_size;
1112         memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
1113                rates_size);
1114
1115         /* Copy the channel information */
1116         priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
1117         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
1118
1119         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED
1120             || priv->sec_info.wpa_enabled)
1121                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
1122
1123         if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
1124                 /* Append a channel TLV */
1125                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
1126                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
1127                 chan_tlv->header.len =
1128                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
1129
1130                 memset(chan_tlv->chan_scan_param, 0x00,
1131                        sizeof(struct mwifiex_chan_scan_param_set));
1132                 chan_tlv->chan_scan_param[0].chan_number =
1133                         (bss_desc->phy_param_set.ds_param_set.current_chan);
1134                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan = %d\n",
1135                        chan_tlv->chan_scan_param[0].chan_number);
1136
1137                 chan_tlv->chan_scan_param[0].radio_type =
1138                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
1139
1140                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band = %d\n",
1141                        chan_tlv->chan_scan_param[0].radio_type);
1142                 pos += sizeof(chan_tlv->header) +
1143                         sizeof(struct mwifiex_chan_scan_param_set);
1144                 cmd_append_size += sizeof(chan_tlv->header) +
1145                         sizeof(struct mwifiex_chan_scan_param_set);
1146         }
1147
1148         if (priv->sec_info.wpa_enabled)
1149                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1150         if (rsn_ie_len == -1)
1151                 return -1;
1152         cmd_append_size += rsn_ie_len;
1153
1154         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
1155                 cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
1156                         bss_desc, &pos);
1157
1158         /* Append vendor specific IE TLV */
1159         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1160                         MWIFIEX_VSIE_MASK_ADHOC, &pos);
1161
1162         cmd->size = cpu_to_le16((u16)
1163                             (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
1164                              + S_DS_GEN + cmd_append_size));
1165
1166         adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
1167
1168         return 0;
1169 }
1170
1171 /*
1172  * This function handles the command response of ad-hoc start and
1173  * ad-hoc join.
1174  *
1175  * The function generates a device-connected event to notify
1176  * the applications, in case of successful ad-hoc start/join, and
1177  * saves the beacon buffer.
1178  */
1179 int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
1180                               struct host_cmd_ds_command *resp)
1181 {
1182         int ret = 0;
1183         struct mwifiex_adapter *adapter = priv->adapter;
1184         struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
1185         struct mwifiex_bssdescriptor *bss_desc;
1186
1187         adhoc_result = &resp->params.adhoc_result;
1188
1189         bss_desc = priv->attempted_bss_desc;
1190
1191         /* Join result code 0 --> SUCCESS */
1192         if (le16_to_cpu(resp->result)) {
1193                 dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
1194                 if (priv->media_connected)
1195                         mwifiex_reset_connect_state(priv);
1196
1197                 memset(&priv->curr_bss_params.bss_descriptor,
1198                        0x00, sizeof(struct mwifiex_bssdescriptor));
1199
1200                 ret = -1;
1201                 goto done;
1202         }
1203
1204         /* Send a Media Connected event, according to the Spec */
1205         priv->media_connected = true;
1206
1207         if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
1208                 dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
1209                                 bss_desc->ssid.ssid);
1210
1211                 /* Update the created network descriptor with the new BSSID */
1212                 memcpy(bss_desc->mac_address,
1213                        adhoc_result->bssid, ETH_ALEN);
1214
1215                 priv->adhoc_state = ADHOC_STARTED;
1216         } else {
1217                 /*
1218                  * Now the join cmd should be successful.
1219                  * If BSSID has changed use SSID to compare instead of BSSID
1220                  */
1221                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
1222                                 bss_desc->ssid.ssid);
1223
1224                 /*
1225                  * Make a copy of current BSSID descriptor, only needed for
1226                  * join since the current descriptor is already being used
1227                  * for adhoc start
1228                  */
1229                 memcpy(&priv->curr_bss_params.bss_descriptor,
1230                        bss_desc, sizeof(struct mwifiex_bssdescriptor));
1231
1232                 priv->adhoc_state = ADHOC_JOINED;
1233         }
1234
1235         dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
1236                                 priv->adhoc_channel);
1237         dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
1238                priv->curr_bss_params.bss_descriptor.mac_address);
1239
1240         if (!netif_carrier_ok(priv->netdev))
1241                 netif_carrier_on(priv->netdev);
1242         if (netif_queue_stopped(priv->netdev))
1243                 netif_wake_queue(priv->netdev);
1244
1245         mwifiex_save_curr_bcn(priv);
1246
1247 done:
1248         /* Need to indicate IOCTL complete */
1249         if (adapter->curr_cmd->wait_q_enabled) {
1250                 if (ret)
1251                         adapter->cmd_wait_q.status = -1;
1252                 else
1253                         adapter->cmd_wait_q.status = 0;
1254
1255         }
1256
1257         return ret;
1258 }
1259
1260 /*
1261  * This function associates to a specific BSS discovered in a scan.
1262  *
1263  * It clears any past association response stored for application
1264  * retrieval and calls the command preparation routine to send the
1265  * command to firmware.
1266  */
1267 int mwifiex_associate(struct mwifiex_private *priv,
1268                       struct mwifiex_bssdescriptor *bss_desc)
1269 {
1270         u8 current_bssid[ETH_ALEN];
1271
1272         /* Return error if the adapter or table entry is not marked as infra */
1273         if ((priv->bss_mode != NL80211_IFTYPE_STATION) ||
1274             (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
1275                 return -1;
1276
1277         memcpy(&current_bssid,
1278                &priv->curr_bss_params.bss_descriptor.mac_address,
1279                sizeof(current_bssid));
1280
1281         /* Clear any past association response stored for application
1282            retrieval */
1283         priv->assoc_rsp_size = 0;
1284
1285         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
1286                                     HostCmd_ACT_GEN_SET, 0, bss_desc);
1287 }
1288
1289 /*
1290  * This function starts an ad-hoc network.
1291  *
1292  * It calls the command preparation routine to send the command to firmware.
1293  */
1294 int
1295 mwifiex_adhoc_start(struct mwifiex_private *priv,
1296                     struct mwifiex_802_11_ssid *adhoc_ssid)
1297 {
1298         dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
1299                 priv->adhoc_channel);
1300         dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1301                priv->curr_bss_params.bss_descriptor.channel);
1302         dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
1303                priv->curr_bss_params.band);
1304
1305         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
1306                                     HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
1307 }
1308
1309 /*
1310  * This function joins an ad-hoc network found in a previous scan.
1311  *
1312  * It calls the command preparation routine to send the command to firmware,
1313  * if already not connected to the requested SSID.
1314  */
1315 int mwifiex_adhoc_join(struct mwifiex_private *priv,
1316                        struct mwifiex_bssdescriptor *bss_desc)
1317 {
1318         dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
1319                priv->curr_bss_params.bss_descriptor.ssid.ssid);
1320         dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
1321                priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
1322         dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
1323                 bss_desc->ssid.ssid);
1324         dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
1325                bss_desc->ssid.ssid_len);
1326
1327         /* Check if the requested SSID is already joined */
1328         if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
1329             !mwifiex_ssid_cmp(&bss_desc->ssid,
1330                               &priv->curr_bss_params.bss_descriptor.ssid) &&
1331             (priv->curr_bss_params.bss_descriptor.bss_mode ==
1332                                                         NL80211_IFTYPE_ADHOC)) {
1333                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
1334                         " is the same as current; not attempting to re-join\n");
1335                 return -1;
1336         }
1337
1338         dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1339                priv->curr_bss_params.bss_descriptor.channel);
1340         dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
1341                priv->curr_bss_params.band);
1342
1343         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
1344                                     HostCmd_ACT_GEN_SET, 0, bss_desc);
1345 }
1346
1347 /*
1348  * This function deauthenticates/disconnects from infra network by sending
1349  * deauthentication request.
1350  */
1351 static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
1352 {
1353         u8 mac_address[ETH_ALEN];
1354         int ret;
1355         u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1356
1357         if (mac) {
1358                 if (!memcmp(mac, zero_mac, sizeof(zero_mac)))
1359                         memcpy((u8 *) &mac_address,
1360                                (u8 *) &priv->curr_bss_params.bss_descriptor.
1361                                mac_address, ETH_ALEN);
1362                 else
1363                         memcpy((u8 *) &mac_address, (u8 *) mac, ETH_ALEN);
1364         } else {
1365                 memcpy((u8 *) &mac_address, (u8 *) &priv->curr_bss_params.
1366                        bss_descriptor.mac_address, ETH_ALEN);
1367         }
1368
1369         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1370                                     HostCmd_ACT_GEN_SET, 0, &mac_address);
1371
1372         return ret;
1373 }
1374
1375 /*
1376  * This function deauthenticates/disconnects from a BSS.
1377  *
1378  * In case of infra made, it sends deauthentication request, and
1379  * in case of ad-hoc mode, a stop network request is sent to the firmware.
1380  */
1381 int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
1382 {
1383         int ret = 0;
1384
1385         if (priv->media_connected) {
1386                 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
1387                         ret = mwifiex_deauthenticate_infra(priv, mac);
1388                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1389                         ret = mwifiex_send_cmd_sync(priv,
1390                                                 HostCmd_CMD_802_11_AD_HOC_STOP,
1391                                                 HostCmd_ACT_GEN_SET, 0, NULL);
1392                 }
1393         }
1394
1395         return ret;
1396 }
1397 EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
1398
1399 /*
1400  * This function converts band to radio type used in channel TLV.
1401  */
1402 u8
1403 mwifiex_band_to_radio_type(u8 band)
1404 {
1405         switch (band) {
1406         case BAND_A:
1407         case BAND_AN:
1408         case BAND_A | BAND_AN:
1409                 return HostCmd_SCAN_RADIO_TYPE_A;
1410         case BAND_B:
1411         case BAND_G:
1412         case BAND_B | BAND_G:
1413         default:
1414                 return HostCmd_SCAN_RADIO_TYPE_BG;
1415         }
1416 }