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 appends a WAPI IE.
 228  *
 229  * This function is called from the network join command preparation routine.
 230  *
 231  * If the IE buffer has been setup by the application, this routine appends
 232  * the buffer as a WAPI TLV type to the request.
 233  */
 234 static int
 235 mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
 236 {
 237         int retLen = 0;
 238         struct mwifiex_ie_types_header ie_header;
 239
 240         /* Null Checks */
 241         if (buffer == NULL)
 242                 return 0;
 243         if (*buffer == NULL)
 244                 return 0;
 245
 246         /*
 247          * If there is a wapi ie buffer setup, append it to the return
 248          *   parameter buffer pointer.
 249          */
 250         if (priv->wapi_ie_len) {
 251                 dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
 252                                 priv->wapi_ie_len, *buffer);
 253
 254                 /* Wrap the generic IE buffer with a pass through TLV type */
 255                 ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
 256                 ie_header.len = cpu_to_le16(priv->wapi_ie_len);
 257                 memcpy(*buffer, &ie_header, sizeof(ie_header));
 258
 259                 /* Increment the return size and the return buffer pointer
 260                    param */
 261                 *buffer += sizeof(ie_header);
 262                 retLen += sizeof(ie_header);
 263
 264                 /* Copy the wapi IE buffer to the output buffer, advance
 265                    pointer */
 266                 memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
 267
 268                 /* Increment the return size and the return buffer pointer
 269                    param */
 270                 *buffer += priv->wapi_ie_len;
 271                 retLen += priv->wapi_ie_len;
 272
 273         }
 274         /* return the length appended to the buffer */
 275         return retLen;
 276 }
 277
 278 /*
 279  * This function appends rsn ie tlv for wpa/wpa2 security modes.
 280  * It is called from the network join command preparation routine.
 281  */
 282 static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
 283                                           u8 **buffer)
 284 {
 285         struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
 286         int rsn_ie_len;
 287
 288         if (!buffer || !(*buffer))
 289                 return 0;
 290
 291         rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
 292         rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
 293         rsn_ie_tlv->header.type = cpu_to_le16(
 294                                  le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
 295         rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
 296         rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
 297                                                         & 0x00FF);
 298         if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
 299                 memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
 300                                         le16_to_cpu(rsn_ie_tlv->header.len));
 301         else
 302                 return -1;
 303
 304         rsn_ie_len = sizeof(rsn_ie_tlv->header) +
 305                                         le16_to_cpu(rsn_ie_tlv->header.len);
 306         *buffer += rsn_ie_len;
 307
 308         return rsn_ie_len;
 309 }
 310
 311 /*
 312  * This function prepares command for association.
 313  *
 314  * This sets the following parameters -
 315  *      - Peer MAC address
 316  *      - Listen interval
 317  *      - Beacon interval
 318  *      - Capability information
 319  *
 320  * ...and the following TLVs, as required -
 321  *      - SSID TLV
 322  *      - PHY TLV
 323  *      - SS TLV
 324  *      - Rates TLV
 325  *      - Authentication TLV
 326  *      - Channel TLV
 327  *      - WPA/WPA2 IE
 328  *      - 11n TLV
 329  *      - Vendor specific TLV
 330  *      - WMM TLV
 331  *      - WAPI IE
 332  *      - Generic IE
 333  *      - TSF TLV
 334  *
 335  * Preparation also includes -
 336  *      - Setting command ID and proper size
 337  *      - Ensuring correct endian-ness
 338  */
 339 int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
 340                                  struct host_cmd_ds_command *cmd,
 341                                  struct mwifiex_bssdescriptor *bss_desc)
 342 {
 343         struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
 344         struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
 345         struct mwifiex_ie_types_phy_param_set *phy_tlv;
 346         struct mwifiex_ie_types_ss_param_set *ss_tlv;
 347         struct mwifiex_ie_types_rates_param_set *rates_tlv;
 348         struct mwifiex_ie_types_auth_type *auth_tlv;
 349         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 350         u8 rates[MWIFIEX_SUPPORTED_RATES];
 351         u32 rates_size;
 352         u16 tmp_cap;
 353         u8 *pos;
 354         int rsn_ie_len = 0;
 355
 356         pos = (u8 *) assoc;
 357
 358         mwifiex_cfg_tx_buf(priv, bss_desc);
 359
 360         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
 361
 362         /* Save so we know which BSS Desc to use in the response handler */
 363         priv->attempted_bss_desc = bss_desc;
 364
 365         memcpy(assoc->peer_sta_addr,
 366                bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
 367         pos += sizeof(assoc->peer_sta_addr);
 368
 369         /* Set the listen interval */
 370         assoc->listen_interval = cpu_to_le16(priv->listen_interval);
 371         /* Set the beacon period */
 372         assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
 373
 374         pos += sizeof(assoc->cap_info_bitmap);
 375         pos += sizeof(assoc->listen_interval);
 376         pos += sizeof(assoc->beacon_period);
 377         pos += sizeof(assoc->dtim_period);
 378
 379         ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
 380         ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
 381         ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
 382         memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
 383                 le16_to_cpu(ssid_tlv->header.len));
 384         pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
 385
 386         phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
 387         phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
 388         phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
 389         memcpy(&phy_tlv->fh_ds.ds_param_set,
 390                &bss_desc->phy_param_set.ds_param_set.current_chan,
 391                sizeof(phy_tlv->fh_ds.ds_param_set));
 392         pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
 393
 394         ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
 395         ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
 396         ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
 397         pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
 398
 399         /* Get the common rates supported between the driver and the BSS Desc */
 400         if (mwifiex_setup_rates_from_bssdesc
 401             (priv, bss_desc, rates, &rates_size))
 402                 return -1;
 403
 404         /* Save the data rates into Current BSS state structure */
 405         priv->curr_bss_params.num_of_rates = rates_size;
 406         memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
 407
 408         /* Setup the Rates TLV in the association command */
 409         rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
 410         rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
 411         rates_tlv->header.len = cpu_to_le16((u16) rates_size);
 412         memcpy(rates_tlv->rates, rates, rates_size);
 413         pos += sizeof(rates_tlv->header) + rates_size;
 414         dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
 415                                         rates_size);
 416
 417         /* Add the Authentication type to be used for Auth frames */
 418         auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
 419         auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 420         auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
 421         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 422                 auth_tlv->auth_type = cpu_to_le16(
 423                                 (u16) priv->sec_info.authentication_mode);
 424         else
 425                 auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
 426
 427         pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
 428
 429         if (IS_SUPPORT_MULTI_BANDS(priv->adapter)
 430             && !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
 431                 && (!bss_desc->disable_11n)
 432                  && (priv->adapter->config_bands & BAND_GN
 433                      || priv->adapter->config_bands & BAND_AN)
 434                  && (bss_desc->bcn_ht_cap)
 435             )
 436                 ) {
 437                 /* Append a channel TLV for the channel the attempted AP was
 438                    found on */
 439                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 440                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 441                 chan_tlv->header.len =
 442                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 443
 444                 memset(chan_tlv->chan_scan_param, 0x00,
 445                        sizeof(struct mwifiex_chan_scan_param_set));
 446                 chan_tlv->chan_scan_param[0].chan_number =
 447                         (bss_desc->phy_param_set.ds_param_set.current_chan);
 448                 dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
 449                        chan_tlv->chan_scan_param[0].chan_number);
 450
 451                 chan_tlv->chan_scan_param[0].radio_type =
 452                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 453
 454                 dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
 455                        chan_tlv->chan_scan_param[0].radio_type);
 456                 pos += sizeof(chan_tlv->header) +
 457                         sizeof(struct mwifiex_chan_scan_param_set);
 458         }
 459
 460         if (!priv->wps.session_enable) {
 461                 if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 462                         rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 463
 464                 if (rsn_ie_len == -1)
 465                         return -1;
 466         }
 467
 468         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
 469                 && (!bss_desc->disable_11n)
 470             && (priv->adapter->config_bands & BAND_GN
 471                 || priv->adapter->config_bands & BAND_AN))
 472                 mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
 473
 474         /* Append vendor specific IE TLV */
 475         mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
 476
 477         mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
 478                                             bss_desc->bcn_ht_cap);
 479         if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
 480                 mwifiex_cmd_append_wapi_ie(priv, &pos);
 481
 482
 483         mwifiex_cmd_append_generic_ie(priv, &pos);
 484
 485         mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
 486
 487         cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
 488
 489         /* Set the Capability info at last */
 490         tmp_cap = bss_desc->cap_info_bitmap;
 491
 492         if (priv->adapter->config_bands == BAND_B)
 493                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 494
 495         tmp_cap &= CAPINFO_MASK;
 496         dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
 497                tmp_cap, CAPINFO_MASK);
 498         assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
 499
 500         return 0;
 501 }
 502
 503 /*
 504  * Association firmware command response handler
 505  *
 506  * The response buffer for the association command has the following
 507  * memory layout.
 508  *
 509  * For cases where an association response was not received (indicated
 510  * by the CapInfo and AId field):
 511  *
 512  *     .------------------------------------------------------------.
 513  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 514  *     .------------------------------------------------------------.
 515  *     |  cap_info/Error Return(t_u16):                             |
 516  *     |           0xFFFF(-1): Internal error                       |
 517  *     |           0xFFFE(-2): Authentication unhandled message     |
 518  *     |           0xFFFD(-3): Authentication refused               |
 519  *     |           0xFFFC(-4): Timeout waiting for AP response      |
 520  *     .------------------------------------------------------------.
 521  *     |  status_code(t_u16):                                       |
 522  *     |        If cap_info is -1:                                  |
 523  *     |           An internal firmware failure prevented the       |
 524  *     |           command from being processed.  The status_code   |
 525  *     |           will be set to 1.                                |
 526  *     |                                                            |
 527  *     |        If cap_info is -2:                                  |
 528  *     |           An authentication frame was received but was     |
 529  *     |           not handled by the firmware.  IEEE Status        |
 530  *     |           code for the failure is returned.                |
 531  *     |                                                            |
 532  *     |        If cap_info is -3:                                  |
 533  *     |           An authentication frame was received and the     |
 534  *     |           status_code is the IEEE Status reported in the   |
 535  *     |           response.                                        |
 536  *     |                                                            |
 537  *     |        If cap_info is -4:                                  |
 538  *     |           (1) Association response timeout                 |
 539  *     |           (2) Authentication response timeout              |
 540  *     .------------------------------------------------------------.
 541  *     |  a_id(t_u16): 0xFFFF                                       |
 542  *     .------------------------------------------------------------.
 543  *
 544  *
 545  * For cases where an association response was received, the IEEE
 546  * standard association response frame is returned:
 547  *
 548  *     .------------------------------------------------------------.
 549  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 550  *     .------------------------------------------------------------.
 551  *     |  cap_info(t_u16): IEEE Capability                          |
 552  *     .------------------------------------------------------------.
 553  *     |  status_code(t_u16): IEEE Status Code                      |
 554  *     .------------------------------------------------------------.
 555  *     |  a_id(t_u16): IEEE Association ID                          |
 556  *     .------------------------------------------------------------.
 557  *     |  IEEE IEs(variable): Any received IEs comprising the       |
 558  *     |                      remaining portion of a received       |
 559  *     |                      association response frame.           |
 560  *     .------------------------------------------------------------.
 561  *
 562  * For simplistic handling, the status_code field can be used to determine
 563  * an association success (0) or failure (non-zero).
 564  */
 565 int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
 566                              struct host_cmd_ds_command *resp)
 567 {
 568         struct mwifiex_adapter *adapter = priv->adapter;
 569         int ret = 0;
 570         struct ieee_types_assoc_rsp *assoc_rsp;
 571         struct mwifiex_bssdescriptor *bss_desc;
 572         u8 enable_data = true;
 573
 574         assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
 575
 576         priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
 577                                      sizeof(priv->assoc_rsp_buf));
 578
 579         memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
 580
 581         if (le16_to_cpu(assoc_rsp->status_code)) {
 582                 priv->adapter->dbg.num_cmd_assoc_failure++;
 583                 dev_err(priv->adapter->dev, "ASSOC_RESP: association failed, "
 584                        "status code = %d, error = 0x%x, a_id = 0x%x\n",
 585                        le16_to_cpu(assoc_rsp->status_code),
 586                        le16_to_cpu(assoc_rsp->cap_info_bitmap),
 587                        le16_to_cpu(assoc_rsp->a_id));
 588
 589                 ret = -1;
 590                 goto done;
 591         }
 592
 593         /* Send a Media Connected event, according to the Spec */
 594         priv->media_connected = true;
 595
 596         priv->adapter->ps_state = PS_STATE_AWAKE;
 597         priv->adapter->pps_uapsd_mode = false;
 598         priv->adapter->tx_lock_flag = false;
 599
 600         /* Set the attempted BSSID Index to current */
 601         bss_desc = priv->attempted_bss_desc;
 602
 603         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
 604                                                 bss_desc->ssid.ssid);
 605
 606         /* Make a copy of current BSSID descriptor */
 607         memcpy(&priv->curr_bss_params.bss_descriptor,
 608                bss_desc, sizeof(struct mwifiex_bssdescriptor));
 609
 610         /* Update curr_bss_params */
 611         priv->curr_bss_params.bss_descriptor.channel
 612                 = bss_desc->phy_param_set.ds_param_set.current_chan;
 613
 614         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
 615
 616         if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
 617                 priv->curr_bss_params.wmm_enabled = true;
 618         else
 619                 priv->curr_bss_params.wmm_enabled = false;
 620
 621         if ((priv->wmm_required || bss_desc->bcn_ht_cap)
 622                         && priv->curr_bss_params.wmm_enabled)
 623                 priv->wmm_enabled = true;
 624         else
 625                 priv->wmm_enabled = false;
 626
 627         priv->curr_bss_params.wmm_uapsd_enabled = false;
 628
 629         if (priv->wmm_enabled)
 630                 priv->curr_bss_params.wmm_uapsd_enabled
 631                         = ((bss_desc->wmm_ie.qos_info_bitmap &
 632                                 IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
 633
 634         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
 635                priv->curr_pkt_filter);
 636         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 637                 priv->wpa_is_gtk_set = false;
 638
 639         if (priv->wmm_enabled) {
 640                 /* Don't re-enable carrier until we get the WMM_GET_STATUS
 641                    event */
 642                 enable_data = false;
 643         } else {
 644                 /* Since WMM is not enabled, setup the queues with the
 645                    defaults */
 646                 mwifiex_wmm_setup_queue_priorities(priv, NULL);
 647                 mwifiex_wmm_setup_ac_downgrade(priv);
 648         }
 649
 650         if (enable_data)
 651                 dev_dbg(priv->adapter->dev,
 652                         "info: post association, re-enabling data flow\n");
 653
 654         /* Reset SNR/NF/RSSI values */
 655         priv->data_rssi_last = 0;
 656         priv->data_nf_last = 0;
 657         priv->data_rssi_avg = 0;
 658         priv->data_nf_avg = 0;
 659         priv->bcn_rssi_last = 0;
 660         priv->bcn_nf_last = 0;
 661         priv->bcn_rssi_avg = 0;
 662         priv->bcn_nf_avg = 0;
 663         priv->rxpd_rate = 0;
 664         priv->rxpd_htinfo = 0;
 665
 666         mwifiex_save_curr_bcn(priv);
 667
 668         priv->adapter->dbg.num_cmd_assoc_success++;
 669
 670         dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
 671
 672         /* Add the ra_list here for infra mode as there will be only 1 ra
 673            always */
 674         mwifiex_ralist_add(priv,
 675                            priv->curr_bss_params.bss_descriptor.mac_address);
 676
 677         if (!netif_carrier_ok(priv->netdev))
 678                 netif_carrier_on(priv->netdev);
 679         if (netif_queue_stopped(priv->netdev))
 680                 netif_wake_queue(priv->netdev);
 681
 682         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 683                 priv->scan_block = true;
 684
 685 done:
 686         /* Need to indicate IOCTL complete */
 687         if (adapter->curr_cmd->wait_q_enabled) {
 688                 if (ret)
 689                         adapter->cmd_wait_q.status = -1;
 690                 else
 691                         adapter->cmd_wait_q.status = 0;
 692         }
 693
 694         return ret;
 695 }
 696
 697 /*
 698  * This function prepares command for ad-hoc start.
 699  *
 700  * Driver will fill up SSID, BSS mode, IBSS parameters, physical
 701  * parameters, probe delay, and capability information. Firmware
 702  * will fill up beacon period, basic rates and operational rates.
 703  *
 704  * In addition, the following TLVs are added -
 705  *      - Channel TLV
 706  *      - Vendor specific IE
 707  *      - WPA/WPA2 IE
 708  *      - HT Capabilities IE
 709  *      - HT Information IE
 710  *
 711  * Preparation also includes -
 712  *      - Setting command ID and proper size
 713  *      - Ensuring correct endian-ness
 714  */
 715 int
 716 mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 717                                 struct host_cmd_ds_command *cmd,
 718                                 struct mwifiex_802_11_ssid *req_ssid)
 719 {
 720         int rsn_ie_len = 0;
 721         struct mwifiex_adapter *adapter = priv->adapter;
 722         struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
 723                 &cmd->params.adhoc_start;
 724         struct mwifiex_bssdescriptor *bss_desc;
 725         u32 cmd_append_size = 0;
 726         u32 i;
 727         u16 tmp_cap;
 728         uint16_t ht_cap_info;
 729         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 730
 731         struct mwifiex_ie_types_htcap *ht_cap;
 732         struct mwifiex_ie_types_htinfo *ht_info;
 733         u8 *pos = (u8 *) adhoc_start +
 734                         sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
 735
 736         if (!adapter)
 737                 return -1;
 738
 739         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
 740
 741         bss_desc = &priv->curr_bss_params.bss_descriptor;
 742         priv->attempted_bss_desc = bss_desc;
 743
 744         /*
 745          * Fill in the parameters for 2 data structures:
 746          *   1. struct host_cmd_ds_802_11_ad_hoc_start command
 747          *   2. bss_desc
 748          * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
 749          * probe delay, and Cap info.
 750          * Firmware will fill up beacon period, Basic rates
 751          * and operational rates.
 752          */
 753
 754         memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
 755
 756         memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
 757
 758         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
 759                                 adhoc_start->ssid);
 760
 761         memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
 762         memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
 763
 764         bss_desc->ssid.ssid_len = req_ssid->ssid_len;
 765
 766         /* Set the BSS mode */
 767         adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
 768         bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 769         adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
 770         bss_desc->beacon_period = priv->beacon_period;
 771
 772         /* Set Physical param set */
 773 /* Parameter IE Id */
 774 #define DS_PARA_IE_ID   3
 775 /* Parameter IE length */
 776 #define DS_PARA_IE_LEN  1
 777
 778         adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
 779         adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
 780
 781         if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 782                         (priv, adapter->adhoc_start_band, (u16)
 783                                 priv->adhoc_channel)) {
 784                 struct mwifiex_chan_freq_power *cfp;
 785                 cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211(priv,
 786                                 adapter->adhoc_start_band, FIRST_VALID_CHANNEL);
 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->DataRate, 0, sizeof(adhoc_start->DataRate));
 842         mwifiex_get_active_data_rates(priv, adhoc_start->DataRate);
 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->DataRate) &&
 855                         adhoc_start->DataRate[i];
 856                         i++)
 857                         ;
 858
 859         priv->curr_bss_params.num_of_rates = i;
 860
 861         /* Copy the ad-hoc creating rates into Current BSS rate structure */
 862         memcpy(&priv->curr_bss_params.data_rates,
 863                &adhoc_start->DataRate, priv->curr_bss_params.num_of_rates);
 864
 865         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%02x %02x %02x %02x\n",
 866                adhoc_start->DataRate[0], adhoc_start->DataRate[1],
 867                adhoc_start->DataRate[2], adhoc_start->DataRate[3]);
 868
 869         dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
 870
 871         if (IS_SUPPORT_MULTI_BANDS(adapter)) {
 872                 /* Append a channel TLV */
 873                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 874                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 875                 chan_tlv->header.len =
 876                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 877
 878                 memset(chan_tlv->chan_scan_param, 0x00,
 879                        sizeof(struct mwifiex_chan_scan_param_set));
 880                 chan_tlv->chan_scan_param[0].chan_number =
 881                         (u8) priv->curr_bss_params.bss_descriptor.channel;
 882
 883                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
 884                        chan_tlv->chan_scan_param[0].chan_number);
 885
 886                 chan_tlv->chan_scan_param[0].radio_type
 887                        = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 888                 if (adapter->adhoc_start_band & BAND_GN
 889                     || adapter->adhoc_start_band & BAND_AN) {
 890                         if (adapter->chan_offset == SEC_CHANNEL_ABOVE)
 891                                 chan_tlv->chan_scan_param[0].radio_type |=
 892                                         SECOND_CHANNEL_ABOVE;
 893                         else if (adapter->chan_offset == SEC_CHANNEL_BELOW)
 894                                 chan_tlv->chan_scan_param[0].radio_type |=
 895                                         SECOND_CHANNEL_BELOW;
 896                 }
 897                 dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
 898                        chan_tlv->chan_scan_param[0].radio_type);
 899                 pos += sizeof(chan_tlv->header) +
 900                         sizeof(struct mwifiex_chan_scan_param_set);
 901                 cmd_append_size +=
 902                         sizeof(chan_tlv->header) +
 903                         sizeof(struct mwifiex_chan_scan_param_set);
 904         }
 905
 906         /* Append vendor specific IE TLV */
 907         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
 908                                 MWIFIEX_VSIE_MASK_ADHOC, &pos);
 909
 910         if (priv->sec_info.wpa_enabled) {
 911                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 912                 if (rsn_ie_len == -1)
 913                         return -1;
 914                 cmd_append_size += rsn_ie_len;
 915         }
 916
 917         if (adapter->adhoc_11n_enabled) {
 918                 {
 919                         ht_cap = (struct mwifiex_ie_types_htcap *) pos;
 920                         memset(ht_cap, 0,
 921                                sizeof(struct mwifiex_ie_types_htcap));
 922                         ht_cap->header.type =
 923                                 cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 924                         ht_cap->header.len =
 925                                cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 926                         ht_cap_info = le16_to_cpu(ht_cap->ht_cap.cap_info);
 927
 928                         ht_cap_info |= IEEE80211_HT_CAP_SGI_20;
 929                         if (adapter->chan_offset) {
 930                                 ht_cap_info |= IEEE80211_HT_CAP_SGI_40;
 931                                 ht_cap_info |= IEEE80211_HT_CAP_DSSSCCK40;
 932                                 ht_cap_info |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 933                                 SETHT_MCS32(ht_cap->ht_cap.mcs.rx_mask);
 934                         }
 935
 936                         ht_cap->ht_cap.ampdu_params_info
 937                                         = IEEE80211_HT_MAX_AMPDU_64K;
 938                         ht_cap->ht_cap.mcs.rx_mask[0] = 0xff;
 939                         pos += sizeof(struct mwifiex_ie_types_htcap);
 940                         cmd_append_size +=
 941                                 sizeof(struct mwifiex_ie_types_htcap);
 942                 }
 943                 {
 944                         ht_info = (struct mwifiex_ie_types_htinfo *) pos;
 945                         memset(ht_info, 0,
 946                                sizeof(struct mwifiex_ie_types_htinfo));
 947                         ht_info->header.type =
 948                                 cpu_to_le16(WLAN_EID_HT_INFORMATION);
 949                         ht_info->header.len =
 950                                 cpu_to_le16(sizeof(struct ieee80211_ht_info));
 951                         ht_info->ht_info.control_chan =
 952                                 (u8) priv->curr_bss_params.bss_descriptor.
 953                                 channel;
 954                         if (adapter->chan_offset) {
 955                                 ht_info->ht_info.ht_param =
 956                                         adapter->chan_offset;
 957                                 ht_info->ht_info.ht_param |=
 958                                         IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
 959                         }
 960                         ht_info->ht_info.operation_mode =
 961                              cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 962                         ht_info->ht_info.basic_set[0] = 0xff;
 963                         pos += sizeof(struct mwifiex_ie_types_htinfo);
 964                         cmd_append_size +=
 965                                 sizeof(struct mwifiex_ie_types_htinfo);
 966                 }
 967         }
 968
 969         cmd->size = cpu_to_le16((u16)
 970                             (sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
 971                              + S_DS_GEN + cmd_append_size));
 972
 973         if (adapter->adhoc_start_band == BAND_B)
 974                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 975         else
 976                 tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 977
 978         adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
 979
 980         return 0;
 981 }
 982
 983 /*
 984  * This function prepares command for ad-hoc join.
 985  *
 986  * Most of the parameters are set up by copying from the target BSS descriptor
 987  * from the scan response.
 988  *
 989  * In addition, the following TLVs are added -
 990  *      - Channel TLV
 991  *      - Vendor specific IE
 992  *      - WPA/WPA2 IE
 993  *      - 11n IE
 994  *
 995  * Preparation also includes -
 996  *      - Setting command ID and proper size
 997  *      - Ensuring correct endian-ness
 998  */
 999 int
1000 mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
1001                                struct host_cmd_ds_command *cmd,
1002                                struct mwifiex_bssdescriptor *bss_desc)
1003 {
1004         int rsn_ie_len = 0;
1005         struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
1006                 &cmd->params.adhoc_join;
1007         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
1008         u32 cmd_append_size = 0;
1009         u16 tmp_cap;
1010         u32 i, rates_size = 0;
1011         u16 curr_pkt_filter;
1012         u8 *pos =
1013                 (u8 *) adhoc_join +
1014                 sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
1015
1016 /* Use G protection */
1017 #define USE_G_PROTECTION        0x02
1018         if (bss_desc->erp_flags & USE_G_PROTECTION) {
1019                 curr_pkt_filter =
1020                         priv->
1021                         curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
1022
1023                 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
1024                                              HostCmd_ACT_GEN_SET, 0,
1025                                              &curr_pkt_filter)) {
1026                         dev_err(priv->adapter->dev,
1027                                "ADHOC_J_CMD: G Protection config failed\n");
1028                         return -1;
1029                 }
1030         }
1031
1032         priv->attempted_bss_desc = bss_desc;
1033
1034         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
1035
1036         adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
1037
1038         adhoc_join->bss_descriptor.beacon_period
1039                 = cpu_to_le16(bss_desc->beacon_period);
1040
1041         memcpy(&adhoc_join->bss_descriptor.bssid,
1042                &bss_desc->mac_address, ETH_ALEN);
1043
1044         memcpy(&adhoc_join->bss_descriptor.ssid,
1045                &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
1046
1047         memcpy(&adhoc_join->bss_descriptor.phy_param_set,
1048                &bss_desc->phy_param_set,
1049                sizeof(union ieee_types_phy_param_set));
1050
1051         memcpy(&adhoc_join->bss_descriptor.ss_param_set,
1052                &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
1053
1054         tmp_cap = bss_desc->cap_info_bitmap;
1055
1056         tmp_cap &= CAPINFO_MASK;
1057
1058         dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: tmp_cap=%4X"
1059                         " CAPINFO_MASK=%4lX\n", tmp_cap, CAPINFO_MASK);
1060
1061         /* Information on BSSID descriptor passed to FW */
1062         dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID = %pM, SSID = %s\n",
1063                                 adhoc_join->bss_descriptor.bssid,
1064                                 adhoc_join->bss_descriptor.ssid);
1065
1066         for (i = 0; bss_desc->supported_rates[i] &&
1067                         i < MWIFIEX_SUPPORTED_RATES;
1068                         i++)
1069                         ;
1070         rates_size = i;
1071
1072         /* Copy Data Rates from the Rates recorded in scan response */
1073         memset(adhoc_join->bss_descriptor.data_rates, 0,
1074                sizeof(adhoc_join->bss_descriptor.data_rates));
1075         memcpy(adhoc_join->bss_descriptor.data_rates,
1076                bss_desc->supported_rates, rates_size);
1077
1078         /* Copy the adhoc join rates into Current BSS state structure */
1079         priv->curr_bss_params.num_of_rates = rates_size;
1080         memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
1081                rates_size);
1082
1083         /* Copy the channel information */
1084         priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
1085         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
1086
1087         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED
1088             || priv->sec_info.wpa_enabled)
1089                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
1090
1091         if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
1092                 /* Append a channel TLV */
1093                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
1094                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
1095                 chan_tlv->header.len =
1096                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
1097
1098                 memset(chan_tlv->chan_scan_param, 0x00,
1099                        sizeof(struct mwifiex_chan_scan_param_set));
1100                 chan_tlv->chan_scan_param[0].chan_number =
1101                         (bss_desc->phy_param_set.ds_param_set.current_chan);
1102                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan = %d\n",
1103                        chan_tlv->chan_scan_param[0].chan_number);
1104
1105                 chan_tlv->chan_scan_param[0].radio_type =
1106                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
1107
1108                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band = %d\n",
1109                        chan_tlv->chan_scan_param[0].radio_type);
1110                 pos += sizeof(chan_tlv->header) +
1111                         sizeof(struct mwifiex_chan_scan_param_set);
1112                 cmd_append_size += sizeof(chan_tlv->header) +
1113                         sizeof(struct mwifiex_chan_scan_param_set);
1114         }
1115
1116         if (priv->sec_info.wpa_enabled)
1117                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1118         if (rsn_ie_len == -1)
1119                 return -1;
1120         cmd_append_size += rsn_ie_len;
1121
1122         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
1123                 cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
1124                         bss_desc, &pos);
1125
1126         /* Append vendor specific IE TLV */
1127         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1128                         MWIFIEX_VSIE_MASK_ADHOC, &pos);
1129
1130         cmd->size = cpu_to_le16((u16)
1131                             (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
1132                              + S_DS_GEN + cmd_append_size));
1133
1134         adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
1135
1136         return 0;
1137 }
1138
1139 /*
1140  * This function handles the command response of ad-hoc start and
1141  * ad-hoc join.
1142  *
1143  * The function generates a device-connected event to notify
1144  * the applications, in case of successful ad-hoc start/join, and
1145  * saves the beacon buffer.
1146  */
1147 int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
1148                               struct host_cmd_ds_command *resp)
1149 {
1150         int ret = 0;
1151         struct mwifiex_adapter *adapter = priv->adapter;
1152         struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
1153         struct mwifiex_bssdescriptor *bss_desc;
1154
1155         adhoc_result = &resp->params.adhoc_result;
1156
1157         bss_desc = priv->attempted_bss_desc;
1158
1159         /* Join result code 0 --> SUCCESS */
1160         if (le16_to_cpu(resp->result)) {
1161                 dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
1162                 if (priv->media_connected)
1163                         mwifiex_reset_connect_state(priv);
1164
1165                 memset(&priv->curr_bss_params.bss_descriptor,
1166                        0x00, sizeof(struct mwifiex_bssdescriptor));
1167
1168                 ret = -1;
1169                 goto done;
1170         }
1171
1172         /* Send a Media Connected event, according to the Spec */
1173         priv->media_connected = true;
1174
1175         if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
1176                 dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
1177                                 bss_desc->ssid.ssid);
1178
1179                 /* Update the created network descriptor with the new BSSID */
1180                 memcpy(bss_desc->mac_address,
1181                        adhoc_result->bssid, ETH_ALEN);
1182
1183                 priv->adhoc_state = ADHOC_STARTED;
1184         } else {
1185                 /*
1186                  * Now the join cmd should be successful.
1187                  * If BSSID has changed use SSID to compare instead of BSSID
1188                  */
1189                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
1190                                 bss_desc->ssid.ssid);
1191
1192                 /*
1193                  * Make a copy of current BSSID descriptor, only needed for
1194                  * join since the current descriptor is already being used
1195                  * for adhoc start
1196                  */
1197                 memcpy(&priv->curr_bss_params.bss_descriptor,
1198                        bss_desc, sizeof(struct mwifiex_bssdescriptor));
1199
1200                 priv->adhoc_state = ADHOC_JOINED;
1201         }
1202
1203         dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
1204                                 priv->adhoc_channel);
1205         dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
1206                priv->curr_bss_params.bss_descriptor.mac_address);
1207
1208         if (!netif_carrier_ok(priv->netdev))
1209                 netif_carrier_on(priv->netdev);
1210         if (netif_queue_stopped(priv->netdev))
1211                 netif_wake_queue(priv->netdev);
1212
1213         mwifiex_save_curr_bcn(priv);
1214
1215 done:
1216         /* Need to indicate IOCTL complete */
1217         if (adapter->curr_cmd->wait_q_enabled) {
1218                 if (ret)
1219                         adapter->cmd_wait_q.status = -1;
1220                 else
1221                         adapter->cmd_wait_q.status = 0;
1222
1223         }
1224
1225         return ret;
1226 }
1227
1228 /*
1229  * This function associates to a specific BSS discovered in a scan.
1230  *
1231  * It clears any past association response stored for application
1232  * retrieval and calls the command preparation routine to send the
1233  * command to firmware.
1234  */
1235 int mwifiex_associate(struct mwifiex_private *priv,
1236                       struct mwifiex_bssdescriptor *bss_desc)
1237 {
1238         u8 current_bssid[ETH_ALEN];
1239
1240         /* Return error if the adapter or table entry is not marked as infra */
1241         if ((priv->bss_mode != NL80211_IFTYPE_STATION) ||
1242             (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
1243                 return -1;
1244
1245         memcpy(&current_bssid,
1246                &priv->curr_bss_params.bss_descriptor.mac_address,
1247                sizeof(current_bssid));
1248
1249         /* Clear any past association response stored for application
1250            retrieval */
1251         priv->assoc_rsp_size = 0;
1252
1253         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
1254                                     HostCmd_ACT_GEN_SET, 0, bss_desc);
1255 }
1256
1257 /*
1258  * This function starts an ad-hoc network.
1259  *
1260  * It calls the command preparation routine to send the command to firmware.
1261  */
1262 int
1263 mwifiex_adhoc_start(struct mwifiex_private *priv,
1264                     struct mwifiex_802_11_ssid *adhoc_ssid)
1265 {
1266         dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
1267                 priv->adhoc_channel);
1268         dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1269                priv->curr_bss_params.bss_descriptor.channel);
1270         dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
1271                priv->curr_bss_params.band);
1272
1273         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
1274                                     HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
1275 }
1276
1277 /*
1278  * This function joins an ad-hoc network found in a previous scan.
1279  *
1280  * It calls the command preparation routine to send the command to firmware,
1281  * if already not connected to the requested SSID.
1282  */
1283 int mwifiex_adhoc_join(struct mwifiex_private *priv,
1284                        struct mwifiex_bssdescriptor *bss_desc)
1285 {
1286         dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
1287                priv->curr_bss_params.bss_descriptor.ssid.ssid);
1288         dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
1289                priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
1290         dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
1291                 bss_desc->ssid.ssid);
1292         dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
1293                bss_desc->ssid.ssid_len);
1294
1295         /* Check if the requested SSID is already joined */
1296         if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
1297             !mwifiex_ssid_cmp(&bss_desc->ssid,
1298                               &priv->curr_bss_params.bss_descriptor.ssid) &&
1299             (priv->curr_bss_params.bss_descriptor.bss_mode ==
1300                                                         NL80211_IFTYPE_ADHOC)) {
1301                 dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
1302                         " is the same as current; not attempting to re-join\n");
1303                 return -1;
1304         }
1305
1306         dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1307                priv->curr_bss_params.bss_descriptor.channel);
1308         dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
1309                priv->curr_bss_params.band);
1310
1311         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
1312                                     HostCmd_ACT_GEN_SET, 0, bss_desc);
1313 }
1314
1315 /*
1316  * This function deauthenticates/disconnects from infra network by sending
1317  * deauthentication request.
1318  */
1319 static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
1320 {
1321         u8 mac_address[ETH_ALEN];
1322         int ret;
1323         u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1324
1325         if (mac) {
1326                 if (!memcmp(mac, zero_mac, sizeof(zero_mac)))
1327                         memcpy((u8 *) &mac_address,
1328                                (u8 *) &priv->curr_bss_params.bss_descriptor.
1329                                mac_address, ETH_ALEN);
1330                 else
1331                         memcpy((u8 *) &mac_address, (u8 *) mac, ETH_ALEN);
1332         } else {
1333                 memcpy((u8 *) &mac_address, (u8 *) &priv->curr_bss_params.
1334                        bss_descriptor.mac_address, ETH_ALEN);
1335         }
1336
1337         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1338                                     HostCmd_ACT_GEN_SET, 0, &mac_address);
1339
1340         return ret;
1341 }
1342
1343 /*
1344  * This function deauthenticates/disconnects from a BSS.
1345  *
1346  * In case of infra made, it sends deauthentication request, and
1347  * in case of ad-hoc mode, a stop network request is sent to the firmware.
1348  */
1349 int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
1350 {
1351         int ret = 0;
1352
1353         if (priv->media_connected) {
1354                 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
1355                         ret = mwifiex_deauthenticate_infra(priv, mac);
1356                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1357                         ret = mwifiex_send_cmd_sync(priv,
1358                                                 HostCmd_CMD_802_11_AD_HOC_STOP,
1359                                                 HostCmd_ACT_GEN_SET, 0, NULL);
1360                 }
1361         }
1362
1363         return ret;
1364 }
1365 EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
1366
1367 /*
1368  * This function converts band to radio type used in channel TLV.
1369  */
1370 u8
1371 mwifiex_band_to_radio_type(u8 band)
1372 {
1373         switch (band) {
1374         case BAND_A:
1375         case BAND_AN:
1376         case BAND_A | BAND_AN:
1377                 return HostCmd_SCAN_RADIO_TYPE_A;
1378         case BAND_B:
1379         case BAND_G:
1380         case BAND_B | BAND_G:
1381         default:
1382                 return HostCmd_SCAN_RADIO_TYPE_BG;
1383         }
1384 }