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,
  56                         "info: %s: append generic ie len %d to %p\n",
  57                         __func__, priv->gen_ie_buf_len, *buffer);
  58
  59                 /* Wrap the generic IE buffer with a pass through TLV type */
  60                 ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
  61                 ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
  62                 memcpy(*buffer, &ie_header, sizeof(ie_header));
  63
  64                 /* Increment the return size and the return buffer pointer
  65                    param */
  66                 *buffer += sizeof(ie_header);
  67                 ret_len += sizeof(ie_header);
  68
  69                 /* Copy the generic IE buffer to the output buffer, advance
  70                    pointer */
  71                 memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
  72
  73                 /* Increment the return size and the return buffer pointer
  74                    param */
  75                 *buffer += priv->gen_ie_buf_len;
  76                 ret_len += priv->gen_ie_buf_len;
  77
  78                 /* Reset the generic IE buffer */
  79                 priv->gen_ie_buf_len = 0;
  80         }
  81
  82         /* return the length appended to the buffer */
  83         return ret_len;
  84 }
  85
  86 /*
  87  * Append TSF tracking info from the scan table for the target AP.
  88  *
  89  * This function is called from the network join command preparation routine.
  90  *
  91  * The TSF table TSF sent to the firmware contains two TSF values:
  92  *      - The TSF of the target AP from its previous beacon/probe response
  93  *      - The TSF timestamp of our local MAC at the time we observed the
  94  *        beacon/probe response.
  95  *
  96  * The firmware uses the timestamp values to set an initial TSF value
  97  * in the MAC for the new association after a reassociation attempt.
  98  */
  99 static int
 100 mwifiex_cmd_append_tsf_tlv(struct mwifiex_private *priv, u8 **buffer,
 101                            struct mwifiex_bssdescriptor *bss_desc)
 102 {
 103         struct mwifiex_ie_types_tsf_timestamp tsf_tlv;
 104         __le64 tsf_val;
 105
 106         /* Null Checks */
 107         if (buffer == NULL)
 108                 return 0;
 109         if (*buffer == NULL)
 110                 return 0;
 111
 112         memset(&tsf_tlv, 0x00, sizeof(struct mwifiex_ie_types_tsf_timestamp));
 113
 114         tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
 115         tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
 116
 117         memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
 118         *buffer += sizeof(tsf_tlv.header);
 119
 120         /* TSF at the time when beacon/probe_response was received */
 121         tsf_val = cpu_to_le64(bss_desc->network_tsf);
 122         memcpy(*buffer, &tsf_val, sizeof(tsf_val));
 123         *buffer += sizeof(tsf_val);
 124
 125         memcpy(&tsf_val, bss_desc->time_stamp, sizeof(tsf_val));
 126
 127         dev_dbg(priv->adapter->dev,
 128                 "info: %s: TSF offset calc: %016llx - %016llx\n",
 129                 __func__, tsf_val, bss_desc->network_tsf);
 130
 131         memcpy(*buffer, &tsf_val, sizeof(tsf_val));
 132         *buffer += sizeof(tsf_val);
 133
 134         return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
 135 }
 136
 137 /*
 138  * This function finds out the common rates between rate1 and rate2.
 139  *
 140  * It will fill common rates in rate1 as output if found.
 141  *
 142  * NOTE: Setting the MSB of the basic rates needs to be taken
 143  * care of, either before or after calling this function.
 144  */
 145 static int mwifiex_get_common_rates(struct mwifiex_private *priv, u8 *rate1,
 146                                     u32 rate1_size, u8 *rate2, u32 rate2_size)
 147 {
 148         int ret;
 149         u8 *ptr = rate1, *tmp;
 150         u32 i, j;
 151
 152         tmp = kmemdup(rate1, rate1_size, GFP_KERNEL);
 153         if (!tmp) {
 154                 dev_err(priv->adapter->dev, "failed to alloc tmp buf\n");
 155                 return -ENOMEM;
 156         }
 157
 158         memset(rate1, 0, rate1_size);
 159
 160         for (i = 0; rate2[i] && i < rate2_size; i++) {
 161                 for (j = 0; tmp[j] && j < rate1_size; j++) {
 162                         /* Check common rate, excluding the bit for
 163                            basic rate */
 164                         if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
 165                                 *rate1++ = tmp[j];
 166                                 break;
 167                         }
 168                 }
 169         }
 170
 171         dev_dbg(priv->adapter->dev, "info: Tx data rate set to %#x\n",
 172                 priv->data_rate);
 173
 174         if (!priv->is_data_rate_auto) {
 175                 while (*ptr) {
 176                         if ((*ptr & 0x7f) == priv->data_rate) {
 177                                 ret = 0;
 178                                 goto done;
 179                         }
 180                         ptr++;
 181                 }
 182                 dev_err(priv->adapter->dev, "previously set fixed data rate %#x"
 183                         " is not compatible with the network\n",
 184                         priv->data_rate);
 185
 186                 ret = -1;
 187                 goto done;
 188         }
 189
 190         ret = 0;
 191 done:
 192         kfree(tmp);
 193         return ret;
 194 }
 195
 196 /*
 197  * This function creates the intersection of the rates supported by a
 198  * target BSS and our adapter settings for use in an assoc/join command.
 199  */
 200 static int
 201 mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
 202                                  struct mwifiex_bssdescriptor *bss_desc,
 203                                  u8 *out_rates, u32 *out_rates_size)
 204 {
 205         u8 card_rates[MWIFIEX_SUPPORTED_RATES];
 206         u32 card_rates_size;
 207
 208         /* Copy AP supported rates */
 209         memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
 210         /* Get the STA supported rates */
 211         card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
 212         /* Get the common rates between AP and STA supported rates */
 213         if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
 214                                      card_rates, card_rates_size)) {
 215                 *out_rates_size = 0;
 216                 dev_err(priv->adapter->dev, "%s: cannot get common rates\n",
 217                         __func__);
 218                 return -1;
 219         }
 220
 221         *out_rates_size =
 222                 min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
 223
 224         return 0;
 225 }
 226
 227 /*
 228  * This function appends a WAPI IE.
 229  *
 230  * This function is called from the network join command preparation routine.
 231  *
 232  * If the IE buffer has been setup by the application, this routine appends
 233  * the buffer as a WAPI TLV type to the request.
 234  */
 235 static int
 236 mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
 237 {
 238         int retLen = 0;
 239         struct mwifiex_ie_types_header ie_header;
 240
 241         /* Null Checks */
 242         if (buffer == NULL)
 243                 return 0;
 244         if (*buffer == NULL)
 245                 return 0;
 246
 247         /*
 248          * If there is a wapi ie buffer setup, append it to the return
 249          *   parameter buffer pointer.
 250          */
 251         if (priv->wapi_ie_len) {
 252                 dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
 253                         priv->wapi_ie_len, *buffer);
 254
 255                 /* Wrap the generic IE buffer with a pass through TLV type */
 256                 ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
 257                 ie_header.len = cpu_to_le16(priv->wapi_ie_len);
 258                 memcpy(*buffer, &ie_header, sizeof(ie_header));
 259
 260                 /* Increment the return size and the return buffer pointer
 261                    param */
 262                 *buffer += sizeof(ie_header);
 263                 retLen += sizeof(ie_header);
 264
 265                 /* Copy the wapi IE buffer to the output buffer, advance
 266                    pointer */
 267                 memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
 268
 269                 /* Increment the return size and the return buffer pointer
 270                    param */
 271                 *buffer += priv->wapi_ie_len;
 272                 retLen += priv->wapi_ie_len;
 273
 274         }
 275         /* return the length appended to the buffer */
 276         return retLen;
 277 }
 278
 279 /*
 280  * This function appends rsn ie tlv for wpa/wpa2 security modes.
 281  * It is called from the network join command preparation routine.
 282  */
 283 static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
 284                                           u8 **buffer)
 285 {
 286         struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
 287         int rsn_ie_len;
 288
 289         if (!buffer || !(*buffer))
 290                 return 0;
 291
 292         rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
 293         rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
 294         rsn_ie_tlv->header.type = cpu_to_le16(
 295                                  le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
 296         rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
 297         rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
 298                                                          & 0x00FF);
 299         if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
 300                 memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
 301                        le16_to_cpu(rsn_ie_tlv->header.len));
 302         else
 303                 return -1;
 304
 305         rsn_ie_len = sizeof(rsn_ie_tlv->header) +
 306                                         le16_to_cpu(rsn_ie_tlv->header.len);
 307         *buffer += rsn_ie_len;
 308
 309         return rsn_ie_len;
 310 }
 311
 312 /*
 313  * This function prepares command for association.
 314  *
 315  * This sets the following parameters -
 316  *      - Peer MAC address
 317  *      - Listen interval
 318  *      - Beacon interval
 319  *      - Capability information
 320  *
 321  * ...and the following TLVs, as required -
 322  *      - SSID TLV
 323  *      - PHY TLV
 324  *      - SS TLV
 325  *      - Rates TLV
 326  *      - Authentication TLV
 327  *      - Channel TLV
 328  *      - WPA/WPA2 IE
 329  *      - 11n TLV
 330  *      - Vendor specific TLV
 331  *      - WMM TLV
 332  *      - WAPI IE
 333  *      - Generic IE
 334  *      - TSF TLV
 335  *
 336  * Preparation also includes -
 337  *      - Setting command ID and proper size
 338  *      - Ensuring correct endian-ness
 339  */
 340 int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
 341                                  struct host_cmd_ds_command *cmd,
 342                                  struct mwifiex_bssdescriptor *bss_desc)
 343 {
 344         struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
 345         struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
 346         struct mwifiex_ie_types_phy_param_set *phy_tlv;
 347         struct mwifiex_ie_types_ss_param_set *ss_tlv;
 348         struct mwifiex_ie_types_rates_param_set *rates_tlv;
 349         struct mwifiex_ie_types_auth_type *auth_tlv;
 350         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 351         u8 rates[MWIFIEX_SUPPORTED_RATES];
 352         u32 rates_size;
 353         u16 tmp_cap;
 354         u8 *pos;
 355         int rsn_ie_len = 0;
 356
 357         pos = (u8 *) assoc;
 358
 359         mwifiex_cfg_tx_buf(priv, bss_desc);
 360
 361         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
 362
 363         /* Save so we know which BSS Desc to use in the response handler */
 364         priv->attempted_bss_desc = bss_desc;
 365
 366         memcpy(assoc->peer_sta_addr,
 367                bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
 368         pos += sizeof(assoc->peer_sta_addr);
 369
 370         /* Set the listen interval */
 371         assoc->listen_interval = cpu_to_le16(priv->listen_interval);
 372         /* Set the beacon period */
 373         assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
 374
 375         pos += sizeof(assoc->cap_info_bitmap);
 376         pos += sizeof(assoc->listen_interval);
 377         pos += sizeof(assoc->beacon_period);
 378         pos += sizeof(assoc->dtim_period);
 379
 380         ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
 381         ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
 382         ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
 383         memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
 384                le16_to_cpu(ssid_tlv->header.len));
 385         pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
 386
 387         phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
 388         phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
 389         phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
 390         memcpy(&phy_tlv->fh_ds.ds_param_set,
 391                &bss_desc->phy_param_set.ds_param_set.current_chan,
 392                sizeof(phy_tlv->fh_ds.ds_param_set));
 393         pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
 394
 395         ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
 396         ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
 397         ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
 398         pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
 399
 400         /* Get the common rates supported between the driver and the BSS Desc */
 401         if (mwifiex_setup_rates_from_bssdesc
 402             (priv, bss_desc, rates, &rates_size))
 403                 return -1;
 404
 405         /* Save the data rates into Current BSS state structure */
 406         priv->curr_bss_params.num_of_rates = rates_size;
 407         memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
 408
 409         /* Setup the Rates TLV in the association command */
 410         rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
 411         rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
 412         rates_tlv->header.len = cpu_to_le16((u16) rates_size);
 413         memcpy(rates_tlv->rates, rates, rates_size);
 414         pos += sizeof(rates_tlv->header) + rates_size;
 415         dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
 416                 rates_size);
 417
 418         /* Add the Authentication type to be used for Auth frames */
 419         auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
 420         auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 421         auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
 422         if (priv->sec_info.wep_enabled)
 423                 auth_tlv->auth_type = cpu_to_le16(
 424                                 (u16) priv->sec_info.authentication_mode);
 425         else
 426                 auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
 427
 428         pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
 429
 430         if (IS_SUPPORT_MULTI_BANDS(priv->adapter) &&
 431             !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
 432             (!bss_desc->disable_11n) &&
 433             (priv->adapter->config_bands & BAND_GN ||
 434              priv->adapter->config_bands & BAND_AN) &&
 435             (bss_desc->bcn_ht_cap)
 436             )
 437                 ) {
 438                 /* Append a channel TLV for the channel the attempted AP was
 439                    found on */
 440                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 441                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 442                 chan_tlv->header.len =
 443                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 444
 445                 memset(chan_tlv->chan_scan_param, 0x00,
 446                        sizeof(struct mwifiex_chan_scan_param_set));
 447                 chan_tlv->chan_scan_param[0].chan_number =
 448                         (bss_desc->phy_param_set.ds_param_set.current_chan);
 449                 dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
 450                         chan_tlv->chan_scan_param[0].chan_number);
 451
 452                 chan_tlv->chan_scan_param[0].radio_type =
 453                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 454
 455                 dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
 456                         chan_tlv->chan_scan_param[0].radio_type);
 457                 pos += sizeof(chan_tlv->header) +
 458                         sizeof(struct mwifiex_chan_scan_param_set);
 459         }
 460
 461         if (!priv->wps.session_enable) {
 462                 if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 463                         rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 464
 465                 if (rsn_ie_len == -1)
 466                         return -1;
 467         }
 468
 469         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
 470             (!bss_desc->disable_11n) &&
 471             (priv->adapter->config_bands & BAND_GN ||
 472              priv->adapter->config_bands & BAND_AN))
 473                 mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
 474
 475         /* Append vendor specific IE TLV */
 476         mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
 477
 478         mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
 479                                             bss_desc->bcn_ht_cap);
 480         if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
 481                 mwifiex_cmd_append_wapi_ie(priv, &pos);
 482
 483
 484         mwifiex_cmd_append_generic_ie(priv, &pos);
 485
 486         mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
 487
 488         cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
 489
 490         /* Set the Capability info at last */
 491         tmp_cap = bss_desc->cap_info_bitmap;
 492
 493         if (priv->adapter->config_bands == BAND_B)
 494                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 495
 496         tmp_cap &= CAPINFO_MASK;
 497         dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
 498                 tmp_cap, CAPINFO_MASK);
 499         assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
 500
 501         return 0;
 502 }
 503
 504 /*
 505  * Association firmware command response handler
 506  *
 507  * The response buffer for the association command has the following
 508  * memory layout.
 509  *
 510  * For cases where an association response was not received (indicated
 511  * by the CapInfo and AId field):
 512  *
 513  *     .------------------------------------------------------------.
 514  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 515  *     .------------------------------------------------------------.
 516  *     |  cap_info/Error Return(t_u16):                             |
 517  *     |           0xFFFF(-1): Internal error                       |
 518  *     |           0xFFFE(-2): Authentication unhandled message     |
 519  *     |           0xFFFD(-3): Authentication refused               |
 520  *     |           0xFFFC(-4): Timeout waiting for AP response      |
 521  *     .------------------------------------------------------------.
 522  *     |  status_code(t_u16):                                       |
 523  *     |        If cap_info is -1:                                  |
 524  *     |           An internal firmware failure prevented the       |
 525  *     |           command from being processed.  The status_code   |
 526  *     |           will be set to 1.                                |
 527  *     |                                                            |
 528  *     |        If cap_info is -2:                                  |
 529  *     |           An authentication frame was received but was     |
 530  *     |           not handled by the firmware.  IEEE Status        |
 531  *     |           code for the failure is returned.                |
 532  *     |                                                            |
 533  *     |        If cap_info is -3:                                  |
 534  *     |           An authentication frame was received and the     |
 535  *     |           status_code is the IEEE Status reported in the   |
 536  *     |           response.                                        |
 537  *     |                                                            |
 538  *     |        If cap_info is -4:                                  |
 539  *     |           (1) Association response timeout                 |
 540  *     |           (2) Authentication response timeout              |
 541  *     .------------------------------------------------------------.
 542  *     |  a_id(t_u16): 0xFFFF                                       |
 543  *     .------------------------------------------------------------.
 544  *
 545  *
 546  * For cases where an association response was received, the IEEE
 547  * standard association response frame is returned:
 548  *
 549  *     .------------------------------------------------------------.
 550  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 551  *     .------------------------------------------------------------.
 552  *     |  cap_info(t_u16): IEEE Capability                          |
 553  *     .------------------------------------------------------------.
 554  *     |  status_code(t_u16): IEEE Status Code                      |
 555  *     .------------------------------------------------------------.
 556  *     |  a_id(t_u16): IEEE Association ID                          |
 557  *     .------------------------------------------------------------.
 558  *     |  IEEE IEs(variable): Any received IEs comprising the       |
 559  *     |                      remaining portion of a received       |
 560  *     |                      association response frame.           |
 561  *     .------------------------------------------------------------.
 562  *
 563  * For simplistic handling, the status_code field can be used to determine
 564  * an association success (0) or failure (non-zero).
 565  */
 566 int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
 567                              struct host_cmd_ds_command *resp)
 568 {
 569         struct mwifiex_adapter *adapter = priv->adapter;
 570         int ret = 0;
 571         struct ieee_types_assoc_rsp *assoc_rsp;
 572         struct mwifiex_bssdescriptor *bss_desc;
 573         u8 enable_data = true;
 574
 575         assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
 576
 577         priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
 578                                    sizeof(priv->assoc_rsp_buf));
 579
 580         memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
 581
 582         if (le16_to_cpu(assoc_rsp->status_code)) {
 583                 priv->adapter->dbg.num_cmd_assoc_failure++;
 584                 dev_err(priv->adapter->dev,
 585                         "ASSOC_RESP: failed, status code=%d err=%#x a_id=%#x\n",
 586                         le16_to_cpu(assoc_rsp->status_code),
 587                         le16_to_cpu(assoc_rsp->cap_info_bitmap),
 588                         le16_to_cpu(assoc_rsp->a_id));
 589
 590                 ret = le16_to_cpu(assoc_rsp->status_code);
 591                 goto done;
 592         }
 593
 594         /* Send a Media Connected event, according to the Spec */
 595         priv->media_connected = true;
 596
 597         priv->adapter->ps_state = PS_STATE_AWAKE;
 598         priv->adapter->pps_uapsd_mode = false;
 599         priv->adapter->tx_lock_flag = false;
 600
 601         /* Set the attempted BSSID Index to current */
 602         bss_desc = priv->attempted_bss_desc;
 603
 604         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
 605                 bss_desc->ssid.ssid);
 606
 607         /* Make a copy of current BSSID descriptor */
 608         memcpy(&priv->curr_bss_params.bss_descriptor,
 609                bss_desc, sizeof(struct mwifiex_bssdescriptor));
 610
 611         /* Update curr_bss_params */
 612         priv->curr_bss_params.bss_descriptor.channel
 613                 = bss_desc->phy_param_set.ds_param_set.current_chan;
 614
 615         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
 616
 617         if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
 618                 priv->curr_bss_params.wmm_enabled = true;
 619         else
 620                 priv->curr_bss_params.wmm_enabled = false;
 621
 622         if ((priv->wmm_required || bss_desc->bcn_ht_cap) &&
 623             priv->curr_bss_params.wmm_enabled)
 624                 priv->wmm_enabled = true;
 625         else
 626                 priv->wmm_enabled = false;
 627
 628         priv->curr_bss_params.wmm_uapsd_enabled = false;
 629
 630         if (priv->wmm_enabled)
 631                 priv->curr_bss_params.wmm_uapsd_enabled
 632                         = ((bss_desc->wmm_ie.qos_info_bitmap &
 633                                 IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
 634
 635         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
 636                 priv->curr_pkt_filter);
 637         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 638                 priv->wpa_is_gtk_set = false;
 639
 640         if (priv->wmm_enabled) {
 641                 /* Don't re-enable carrier until we get the WMM_GET_STATUS
 642                    event */
 643                 enable_data = false;
 644         } else {
 645                 /* Since WMM is not enabled, setup the queues with the
 646                    defaults */
 647                 mwifiex_wmm_setup_queue_priorities(priv, NULL);
 648                 mwifiex_wmm_setup_ac_downgrade(priv);
 649         }
 650
 651         if (enable_data)
 652                 dev_dbg(priv->adapter->dev,
 653                         "info: post association, re-enabling data flow\n");
 654
 655         /* Reset SNR/NF/RSSI values */
 656         priv->data_rssi_last = 0;
 657         priv->data_nf_last = 0;
 658         priv->data_rssi_avg = 0;
 659         priv->data_nf_avg = 0;
 660         priv->bcn_rssi_last = 0;
 661         priv->bcn_nf_last = 0;
 662         priv->bcn_rssi_avg = 0;
 663         priv->bcn_nf_avg = 0;
 664         priv->rxpd_rate = 0;
 665         priv->rxpd_htinfo = 0;
 666
 667         mwifiex_save_curr_bcn(priv);
 668
 669         priv->adapter->dbg.num_cmd_assoc_success++;
 670
 671         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
 672
 673         /* Add the ra_list here for infra mode as there will be only 1 ra
 674            always */
 675         mwifiex_ralist_add(priv,
 676                            priv->curr_bss_params.bss_descriptor.mac_address);
 677
 678         if (!netif_carrier_ok(priv->netdev))
 679                 netif_carrier_on(priv->netdev);
 680         if (netif_queue_stopped(priv->netdev))
 681                 netif_wake_queue(priv->netdev);
 682
 683         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 684                 priv->scan_block = true;
 685
 686 done:
 687         /* Need to indicate IOCTL complete */
 688         if (adapter->curr_cmd->wait_q_enabled) {
 689                 if (ret)
 690                         adapter->cmd_wait_q.status = -1;
 691                 else
 692                         adapter->cmd_wait_q.status = 0;
 693         }
 694
 695         return ret;
 696 }
 697
 698 /*
 699  * This function prepares command for ad-hoc start.
 700  *
 701  * Driver will fill up SSID, BSS mode, IBSS parameters, physical
 702  * parameters, probe delay, and capability information. Firmware
 703  * will fill up beacon period, basic rates and operational rates.
 704  *
 705  * In addition, the following TLVs are added -
 706  *      - Channel TLV
 707  *      - Vendor specific IE
 708  *      - WPA/WPA2 IE
 709  *      - HT Capabilities IE
 710  *      - HT Information IE
 711  *
 712  * Preparation also includes -
 713  *      - Setting command ID and proper size
 714  *      - Ensuring correct endian-ness
 715  */
 716 int
 717 mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 718                                 struct host_cmd_ds_command *cmd,
 719                                 struct cfg80211_ssid *req_ssid)
 720 {
 721         int rsn_ie_len = 0;
 722         struct mwifiex_adapter *adapter = priv->adapter;
 723         struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
 724                 &cmd->params.adhoc_start;
 725         struct mwifiex_bssdescriptor *bss_desc;
 726         u32 cmd_append_size = 0;
 727         u32 i;
 728         u16 tmp_cap;
 729         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 730         u8 radio_type;
 731
 732         struct mwifiex_ie_types_htcap *ht_cap;
 733         struct mwifiex_ie_types_htinfo *ht_info;
 734         u8 *pos = (u8 *) adhoc_start +
 735                         sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
 736
 737         if (!adapter)
 738                 return -1;
 739
 740         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
 741
 742         bss_desc = &priv->curr_bss_params.bss_descriptor;
 743         priv->attempted_bss_desc = bss_desc;
 744
 745         /*
 746          * Fill in the parameters for 2 data structures:
 747          *   1. struct host_cmd_ds_802_11_ad_hoc_start command
 748          *   2. bss_desc
 749          * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
 750          * probe delay, and Cap info.
 751          * Firmware will fill up beacon period, Basic rates
 752          * and operational rates.
 753          */
 754
 755         memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
 756
 757         memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
 758
 759         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
 760                 adhoc_start->ssid);
 761
 762         memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
 763         memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
 764
 765         bss_desc->ssid.ssid_len = req_ssid->ssid_len;
 766
 767         /* Set the BSS mode */
 768         adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
 769         bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 770         adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
 771         bss_desc->beacon_period = priv->beacon_period;
 772
 773         /* Set Physical param set */
 774 /* Parameter IE Id */
 775 #define DS_PARA_IE_ID   3
 776 /* Parameter IE length */
 777 #define DS_PARA_IE_LEN  1
 778
 779         adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
 780         adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
 781
 782         if (!mwifiex_get_cfp(priv, adapter->adhoc_start_band,
 783                              (u16) priv->adhoc_channel, 0)) {
 784                 struct mwifiex_chan_freq_power *cfp;
 785                 cfp = mwifiex_get_cfp(priv, adapter->adhoc_start_band,
 786                                       FIRST_VALID_CHANNEL, 0);
 787                 if (cfp)
 788                         priv->adhoc_channel = (u8) cfp->channel;
 789         }
 790
 791         if (!priv->adhoc_channel) {
 792                 dev_err(adapter->dev, "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
 793                 return -1;
 794         }
 795
 796         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
 797                 priv->adhoc_channel);
 798
 799         priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
 800         priv->curr_bss_params.band = adapter->adhoc_start_band;
 801
 802         bss_desc->channel = priv->adhoc_channel;
 803         adhoc_start->phy_param_set.ds_param_set.current_chan =
 804                 priv->adhoc_channel;
 805
 806         memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
 807                sizeof(union ieee_types_phy_param_set));
 808
 809         /* Set IBSS param set */
 810 /* IBSS parameter IE Id */
 811 #define IBSS_PARA_IE_ID   6
 812 /* IBSS parameter IE length */
 813 #define IBSS_PARA_IE_LEN  2
 814
 815         adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
 816         adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
 817         adhoc_start->ss_param_set.ibss_param_set.atim_window
 818                                         = cpu_to_le16(priv->atim_window);
 819         memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
 820                sizeof(union ieee_types_ss_param_set));
 821
 822         /* Set Capability info */
 823         bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
 824         tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
 825         tmp_cap &= ~WLAN_CAPABILITY_ESS;
 826         tmp_cap |= WLAN_CAPABILITY_IBSS;
 827
 828         /* Set up privacy in bss_desc */
 829         if (priv->sec_info.encryption_mode) {
 830                 /* Ad-Hoc capability privacy on */
 831                 dev_dbg(adapter->dev,
 832                         "info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
 833                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 834                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
 835         } else {
 836                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: wep_status NOT set,"
 837                                 " setting privacy to ACCEPT ALL\n");
 838                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 839         }
 840
 841         memset(adhoc_start->data_rate, 0, sizeof(adhoc_start->data_rate));
 842         mwifiex_get_active_data_rates(priv, adhoc_start->data_rate);
 843         if ((adapter->adhoc_start_band & BAND_G) &&
 844             (priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
 845                 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 846                                            HostCmd_ACT_GEN_SET, 0,
 847                                            &priv->curr_pkt_filter)) {
 848                         dev_err(adapter->dev,
 849                                 "ADHOC_S_CMD: G Protection config failed\n");
 850                         return -1;
 851                 }
 852         }
 853         /* Find the last non zero */
 854         for (i = 0; i < sizeof(adhoc_start->data_rate); i++)
 855                 if (!adhoc_start->data_rate[i])
 856                         break;
 857
 858         priv->curr_bss_params.num_of_rates = i;
 859
 860         /* Copy the ad-hoc creating rates into Current BSS rate structure */
 861         memcpy(&priv->curr_bss_params.data_rates,
 862                &adhoc_start->data_rate, priv->curr_bss_params.num_of_rates);
 863
 864         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%02x %02x %02x %02x\n",
 865                 adhoc_start->data_rate[0], adhoc_start->data_rate[1],
 866                 adhoc_start->data_rate[2], adhoc_start->data_rate[3]);
 867
 868         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
 869
 870         if (IS_SUPPORT_MULTI_BANDS(adapter)) {
 871                 /* Append a channel TLV */
 872                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 873                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 874                 chan_tlv->header.len =
 875                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 876
 877                 memset(chan_tlv->chan_scan_param, 0x00,
 878                        sizeof(struct mwifiex_chan_scan_param_set));
 879                 chan_tlv->chan_scan_param[0].chan_number =
 880                         (u8) priv->curr_bss_params.bss_descriptor.channel;
 881
 882                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
 883                         chan_tlv->chan_scan_param[0].chan_number);
 884
 885                 chan_tlv->chan_scan_param[0].radio_type
 886                        = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 887                 if (adapter->adhoc_start_band & BAND_GN ||
 888                     adapter->adhoc_start_band & BAND_AN) {
 889                         if (adapter->sec_chan_offset ==
 890                                             IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 891                                 chan_tlv->chan_scan_param[0].radio_type |=
 892                                         (IEEE80211_HT_PARAM_CHA_SEC_ABOVE << 4);
 893                         else if (adapter->sec_chan_offset ==
 894                                             IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 895                                 chan_tlv->chan_scan_param[0].radio_type |=
 896                                         (IEEE80211_HT_PARAM_CHA_SEC_BELOW << 4);
 897                 }
 898                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
 899                         chan_tlv->chan_scan_param[0].radio_type);
 900                 pos += sizeof(chan_tlv->header) +
 901                         sizeof(struct mwifiex_chan_scan_param_set);
 902                 cmd_append_size +=
 903                         sizeof(chan_tlv->header) +
 904                         sizeof(struct mwifiex_chan_scan_param_set);
 905         }
 906
 907         /* Append vendor specific IE TLV */
 908         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
 909                                 MWIFIEX_VSIE_MASK_ADHOC, &pos);
 910
 911         if (priv->sec_info.wpa_enabled) {
 912                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 913                 if (rsn_ie_len == -1)
 914                         return -1;
 915                 cmd_append_size += rsn_ie_len;
 916         }
 917
 918         if (adapter->adhoc_11n_enabled) {
 919                 /* Fill HT CAPABILITY */
 920                 ht_cap = (struct mwifiex_ie_types_htcap *) pos;
 921                 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
 922                 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 923                 ht_cap->header.len =
 924                        cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 925                 radio_type = mwifiex_band_to_radio_type(
 926                                         priv->adapter->config_bands);
 927                 mwifiex_fill_cap_info(priv, radio_type, ht_cap);
 928
 929                 pos += sizeof(struct mwifiex_ie_types_htcap);
 930                 cmd_append_size += sizeof(struct mwifiex_ie_types_htcap);
 931
 932                 /* Fill HT INFORMATION */
 933                 ht_info = (struct mwifiex_ie_types_htinfo *) pos;
 934                 memset(ht_info, 0, sizeof(struct mwifiex_ie_types_htinfo));
 935                 ht_info->header.type = cpu_to_le16(WLAN_EID_HT_INFORMATION);
 936                 ht_info->header.len =
 937                                 cpu_to_le16(sizeof(struct ieee80211_ht_info));
 938
 939                 ht_info->ht_info.control_chan =
 940                         (u8) priv->curr_bss_params.bss_descriptor.channel;
 941                 if (adapter->sec_chan_offset) {
 942                         ht_info->ht_info.ht_param = adapter->sec_chan_offset;
 943                         ht_info->ht_info.ht_param |=
 944                                         IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
 945                 }
 946                 ht_info->ht_info.operation_mode =
 947                      cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 948                 ht_info->ht_info.basic_set[0] = 0xff;
 949                 pos += sizeof(struct mwifiex_ie_types_htinfo);
 950                 cmd_append_size +=
 951                                 sizeof(struct mwifiex_ie_types_htinfo);
 952         }
 953
 954         cmd->size =
 955                 cpu_to_le16((u16)(sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
 956                                   + S_DS_GEN + cmd_append_size));
 957
 958         if (adapter->adhoc_start_band == BAND_B)
 959                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 960         else
 961                 tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 962
 963         adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
 964
 965         return 0;
 966 }
 967
 968 /*
 969  * This function prepares command for ad-hoc join.
 970  *
 971  * Most of the parameters are set up by copying from the target BSS descriptor
 972  * from the scan response.
 973  *
 974  * In addition, the following TLVs are added -
 975  *      - Channel TLV
 976  *      - Vendor specific IE
 977  *      - WPA/WPA2 IE
 978  *      - 11n IE
 979  *
 980  * Preparation also includes -
 981  *      - Setting command ID and proper size
 982  *      - Ensuring correct endian-ness
 983  */
 984 int
 985 mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
 986                                struct host_cmd_ds_command *cmd,
 987                                struct mwifiex_bssdescriptor *bss_desc)
 988 {
 989         int rsn_ie_len = 0;
 990         struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
 991                 &cmd->params.adhoc_join;
 992         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 993         u32 cmd_append_size = 0;
 994         u16 tmp_cap;
 995         u32 i, rates_size = 0;
 996         u16 curr_pkt_filter;
 997         u8 *pos =
 998                 (u8 *) adhoc_join +
 999                 sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
1000
1001 /* Use G protection */
1002 #define USE_G_PROTECTION        0x02
1003         if (bss_desc->erp_flags & USE_G_PROTECTION) {
1004                 curr_pkt_filter =
1005                         priv->
1006                         curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
1007
1008                 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
1009                                            HostCmd_ACT_GEN_SET, 0,
1010                                            &curr_pkt_filter)) {
1011                         dev_err(priv->adapter->dev,
1012                                 "ADHOC_J_CMD: G Protection config failed\n");
1013                         return -1;
1014                 }
1015         }
1016
1017         priv->attempted_bss_desc = bss_desc;
1018
1019         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
1020
1021         adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
1022
1023         adhoc_join->bss_descriptor.beacon_period
1024                 = cpu_to_le16(bss_desc->beacon_period);
1025
1026         memcpy(&adhoc_join->bss_descriptor.bssid,
1027                &bss_desc->mac_address, ETH_ALEN);
1028
1029         memcpy(&adhoc_join->bss_descriptor.ssid,
1030                &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
1031
1032         memcpy(&adhoc_join->bss_descriptor.phy_param_set,
1033                &bss_desc->phy_param_set,
1034                sizeof(union ieee_types_phy_param_set));
1035
1036         memcpy(&adhoc_join->bss_descriptor.ss_param_set,
1037                &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
1038
1039         tmp_cap = bss_desc->cap_info_bitmap;
1040
1041         tmp_cap &= CAPINFO_MASK;
1042
1043         dev_dbg(priv->adapter->dev,
1044                 "info: ADHOC_J_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
1045                 tmp_cap, CAPINFO_MASK);
1046
1047         /* Information on BSSID descriptor passed to FW */
1048         dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID=%pM, SSID='%s'\n",
1049                 adhoc_join->bss_descriptor.bssid,
1050                 adhoc_join->bss_descriptor.ssid);
1051
1052         for (i = 0; bss_desc->supported_rates[i] &&
1053                         i < MWIFIEX_SUPPORTED_RATES;
1054                         i++)
1055                         ;
1056         rates_size = i;
1057
1058         /* Copy Data Rates from the Rates recorded in scan response */
1059         memset(adhoc_join->bss_descriptor.data_rates, 0,
1060                sizeof(adhoc_join->bss_descriptor.data_rates));
1061         memcpy(adhoc_join->bss_descriptor.data_rates,
1062                bss_desc->supported_rates, rates_size);
1063
1064         /* Copy the adhoc join rates into Current BSS state structure */
1065         priv->curr_bss_params.num_of_rates = rates_size;
1066         memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
1067                rates_size);
1068
1069         /* Copy the channel information */
1070         priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
1071         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
1072
1073         if (priv->sec_info.wep_enabled || priv->sec_info.wpa_enabled)
1074                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
1075
1076         if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
1077                 /* Append a channel TLV */
1078                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
1079                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
1080                 chan_tlv->header.len =
1081                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
1082
1083                 memset(chan_tlv->chan_scan_param, 0x00,
1084                        sizeof(struct mwifiex_chan_scan_param_set));
1085                 chan_tlv->chan_scan_param[0].chan_number =
1086                         (bss_desc->phy_param_set.ds_param_set.current_chan);
1087                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan=%d\n",
1088                         chan_tlv->chan_scan_param[0].chan_number);
1089
1090                 chan_tlv->chan_scan_param[0].radio_type =
1091                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
1092
1093                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band=%d\n",
1094                         chan_tlv->chan_scan_param[0].radio_type);
1095                 pos += sizeof(chan_tlv->header) +
1096                                 sizeof(struct mwifiex_chan_scan_param_set);
1097                 cmd_append_size += sizeof(chan_tlv->header) +
1098                                 sizeof(struct mwifiex_chan_scan_param_set);
1099         }
1100
1101         if (priv->sec_info.wpa_enabled)
1102                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1103         if (rsn_ie_len == -1)
1104                 return -1;
1105         cmd_append_size += rsn_ie_len;
1106
1107         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
1108                 cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
1109                         bss_desc, &pos);
1110
1111         /* Append vendor specific IE TLV */
1112         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1113                         MWIFIEX_VSIE_MASK_ADHOC, &pos);
1114
1115         cmd->size = cpu_to_le16
1116                 ((u16) (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
1117                         + S_DS_GEN + cmd_append_size));
1118
1119         adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
1120
1121         return 0;
1122 }
1123
1124 /*
1125  * This function handles the command response of ad-hoc start and
1126  * ad-hoc join.
1127  *
1128  * The function generates a device-connected event to notify
1129  * the applications, in case of successful ad-hoc start/join, and
1130  * saves the beacon buffer.
1131  */
1132 int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
1133                               struct host_cmd_ds_command *resp)
1134 {
1135         int ret = 0;
1136         struct mwifiex_adapter *adapter = priv->adapter;
1137         struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
1138         struct mwifiex_bssdescriptor *bss_desc;
1139
1140         adhoc_result = &resp->params.adhoc_result;
1141
1142         bss_desc = priv->attempted_bss_desc;
1143
1144         /* Join result code 0 --> SUCCESS */
1145         if (le16_to_cpu(resp->result)) {
1146                 dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
1147                 if (priv->media_connected)
1148                         mwifiex_reset_connect_state(priv);
1149
1150                 memset(&priv->curr_bss_params.bss_descriptor,
1151                        0x00, sizeof(struct mwifiex_bssdescriptor));
1152
1153                 ret = -1;
1154                 goto done;
1155         }
1156
1157         /* Send a Media Connected event, according to the Spec */
1158         priv->media_connected = true;
1159
1160         if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
1161                 dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
1162                         bss_desc->ssid.ssid);
1163
1164                 /* Update the created network descriptor with the new BSSID */
1165                 memcpy(bss_desc->mac_address,
1166                        adhoc_result->bssid, ETH_ALEN);
1167
1168                 priv->adhoc_state = ADHOC_STARTED;
1169         } else {
1170                 /*
1171                  * Now the join cmd should be successful.
1172                  * If BSSID has changed use SSID to compare instead of BSSID
1173                  */
1174                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
1175                         bss_desc->ssid.ssid);
1176
1177                 /*
1178                  * Make a copy of current BSSID descriptor, only needed for
1179                  * join since the current descriptor is already being used
1180                  * for adhoc start
1181                  */
1182                 memcpy(&priv->curr_bss_params.bss_descriptor,
1183                        bss_desc, sizeof(struct mwifiex_bssdescriptor));
1184
1185                 priv->adhoc_state = ADHOC_JOINED;
1186         }
1187
1188         dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
1189                 priv->adhoc_channel);
1190         dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
1191                 priv->curr_bss_params.bss_descriptor.mac_address);
1192
1193         if (!netif_carrier_ok(priv->netdev))
1194                 netif_carrier_on(priv->netdev);
1195         if (netif_queue_stopped(priv->netdev))
1196                 netif_wake_queue(priv->netdev);
1197
1198         mwifiex_save_curr_bcn(priv);
1199
1200 done:
1201         /* Need to indicate IOCTL complete */
1202         if (adapter->curr_cmd->wait_q_enabled) {
1203                 if (ret)
1204                         adapter->cmd_wait_q.status = -1;
1205                 else
1206                         adapter->cmd_wait_q.status = 0;
1207
1208         }
1209
1210         return ret;
1211 }
1212
1213 /*
1214  * This function associates to a specific BSS discovered in a scan.
1215  *
1216  * It clears any past association response stored for application
1217  * retrieval and calls the command preparation routine to send the
1218  * command to firmware.
1219  */
1220 int mwifiex_associate(struct mwifiex_private *priv,
1221                       struct mwifiex_bssdescriptor *bss_desc)
1222 {
1223         u8 current_bssid[ETH_ALEN];
1224
1225         /* Return error if the adapter or table entry is not marked as infra */
1226         if ((priv->bss_mode != NL80211_IFTYPE_STATION) ||
1227             (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
1228                 return -1;
1229
1230         memcpy(&current_bssid,
1231                &priv->curr_bss_params.bss_descriptor.mac_address,
1232                sizeof(current_bssid));
1233
1234         /* Clear any past association response stored for application
1235            retrieval */
1236         priv->assoc_rsp_size = 0;
1237
1238         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
1239                                     HostCmd_ACT_GEN_SET, 0, bss_desc);
1240 }
1241
1242 /*
1243  * This function starts an ad-hoc network.
1244  *
1245  * It calls the command preparation routine to send the command to firmware.
1246  */
1247 int
1248 mwifiex_adhoc_start(struct mwifiex_private *priv,
1249                     struct cfg80211_ssid *adhoc_ssid)
1250 {
1251         dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
1252                 priv->adhoc_channel);
1253         dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1254                 priv->curr_bss_params.bss_descriptor.channel);
1255         dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
1256                 priv->curr_bss_params.band);
1257
1258         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
1259                                     HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
1260 }
1261
1262 /*
1263  * This function joins an ad-hoc network found in a previous scan.
1264  *
1265  * It calls the command preparation routine to send the command to firmware,
1266  * if already not connected to the requested SSID.
1267  */
1268 int mwifiex_adhoc_join(struct mwifiex_private *priv,
1269                        struct mwifiex_bssdescriptor *bss_desc)
1270 {
1271         dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
1272                 priv->curr_bss_params.bss_descriptor.ssid.ssid);
1273         dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
1274                 priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
1275         dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
1276                 bss_desc->ssid.ssid);
1277         dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
1278                 bss_desc->ssid.ssid_len);
1279
1280         /* Check if the requested SSID is already joined */
1281         if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
1282             !mwifiex_ssid_cmp(&bss_desc->ssid,
1283                               &priv->curr_bss_params.bss_descriptor.ssid) &&
1284             (priv->curr_bss_params.bss_descriptor.bss_mode ==
1285                                                         NL80211_IFTYPE_ADHOC)) {
1286                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
1287                         " is the same as current; not attempting to re-join\n");
1288                 return -1;
1289         }
1290
1291         dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1292                 priv->curr_bss_params.bss_descriptor.channel);
1293         dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
1294                 priv->curr_bss_params.band);
1295
1296         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
1297                                     HostCmd_ACT_GEN_SET, 0, bss_desc);
1298 }
1299
1300 /*
1301  * This function deauthenticates/disconnects from infra network by sending
1302  * deauthentication request.
1303  */
1304 static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
1305 {
1306         u8 mac_address[ETH_ALEN];
1307         int ret;
1308         u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1309
1310         if (mac) {
1311                 if (!memcmp(mac, zero_mac, sizeof(zero_mac)))
1312                         memcpy((u8 *) &mac_address,
1313                                (u8 *) &priv->curr_bss_params.bss_descriptor.
1314                                mac_address, ETH_ALEN);
1315                 else
1316                         memcpy((u8 *) &mac_address, (u8 *) mac, ETH_ALEN);
1317         } else {
1318                 memcpy((u8 *) &mac_address, (u8 *) &priv->curr_bss_params.
1319                        bss_descriptor.mac_address, ETH_ALEN);
1320         }
1321
1322         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1323                                     HostCmd_ACT_GEN_SET, 0, &mac_address);
1324
1325         return ret;
1326 }
1327
1328 /*
1329  * This function deauthenticates/disconnects from a BSS.
1330  *
1331  * In case of infra made, it sends deauthentication request, and
1332  * in case of ad-hoc mode, a stop network request is sent to the firmware.
1333  */
1334 int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
1335 {
1336         int ret = 0;
1337
1338         if (priv->media_connected) {
1339                 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
1340                         ret = mwifiex_deauthenticate_infra(priv, mac);
1341                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1342                         ret = mwifiex_send_cmd_sync(priv,
1343                                                 HostCmd_CMD_802_11_AD_HOC_STOP,
1344                                                 HostCmd_ACT_GEN_SET, 0, NULL);
1345                 }
1346         }
1347
1348         return ret;
1349 }
1350 EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
1351
1352 /*
1353  * This function converts band to radio type used in channel TLV.
1354  */
1355 u8
1356 mwifiex_band_to_radio_type(u8 band)
1357 {
1358         switch (band) {
1359         case BAND_A:
1360         case BAND_AN:
1361         case BAND_A | BAND_AN:
1362                 return HostCmd_SCAN_RADIO_TYPE_A;
1363         case BAND_B:
1364         case BAND_G:
1365         case BAND_B | BAND_G:
1366         default:
1367                 return HostCmd_SCAN_RADIO_TYPE_BG;
1368         }
1369 }