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/drivers/net/wireless/mwifiex/join.c

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C | 1416 lines | 855 code | 223 blank | 338 comment | 127 complexity | 1c81635bc60f7d276880c8459a75b411 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
   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 */
  38static int
  39mwifiex_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 */
  98static int
  99mwifiex_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 */
 143static 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;
 190done:
 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 */
 199static int
 200mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
 201				 struct mwifiex_bssdescriptor *bss_desc,
 202				 u8 *out_rates, u32 *out_rates_size)
 203{
 204	u8 card_rates[MWIFIEX_SUPPORTED_RATES];
 205	u32 card_rates_size;
 206
 207	/* Copy AP supported rates */
 208	memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
 209	/* Get the STA supported rates */
 210	card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
 211	/* Get the common rates between AP and STA supported rates */
 212	if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
 213				     card_rates, card_rates_size)) {
 214		*out_rates_size = 0;
 215		dev_err(priv->adapter->dev, "%s: cannot get common rates\n",
 216						__func__);
 217		return -1;
 218	}
 219
 220	*out_rates_size =
 221		min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
 222
 223	return 0;
 224}
 225
 226/*
 227 * This function updates the scan entry TSF timestamps to reflect
 228 * a new association.
 229 */
 230static void
 231mwifiex_update_tsf_timestamps(struct mwifiex_private *priv,
 232			      struct mwifiex_bssdescriptor *new_bss_desc)
 233{
 234	struct mwifiex_adapter *adapter = priv->adapter;
 235	u32 table_idx;
 236	long long new_tsf_base;
 237	signed long long tsf_delta;
 238
 239	memcpy(&new_tsf_base, new_bss_desc->time_stamp, sizeof(new_tsf_base));
 240
 241	tsf_delta = new_tsf_base - new_bss_desc->network_tsf;
 242
 243	dev_dbg(adapter->dev, "info: TSF: update TSF timestamps, "
 244		"0x%016llx -> 0x%016llx\n",
 245	       new_bss_desc->network_tsf, new_tsf_base);
 246
 247	for (table_idx = 0; table_idx < adapter->num_in_scan_table;
 248	     table_idx++)
 249		adapter->scan_table[table_idx].network_tsf += tsf_delta;
 250}
 251
 252/*
 253 * This function appends a WAPI IE.
 254 *
 255 * This function is called from the network join command preparation routine.
 256 *
 257 * If the IE buffer has been setup by the application, this routine appends
 258 * the buffer as a WAPI TLV type to the request.
 259 */
 260static int
 261mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
 262{
 263	int retLen = 0;
 264	struct mwifiex_ie_types_header ie_header;
 265
 266	/* Null Checks */
 267	if (buffer == NULL)
 268		return 0;
 269	if (*buffer == NULL)
 270		return 0;
 271
 272	/*
 273	 * If there is a wapi ie buffer setup, append it to the return
 274	 *   parameter buffer pointer.
 275	 */
 276	if (priv->wapi_ie_len) {
 277		dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
 278				priv->wapi_ie_len, *buffer);
 279
 280		/* Wrap the generic IE buffer with a pass through TLV type */
 281		ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
 282		ie_header.len = cpu_to_le16(priv->wapi_ie_len);
 283		memcpy(*buffer, &ie_header, sizeof(ie_header));
 284
 285		/* Increment the return size and the return buffer pointer
 286		   param */
 287		*buffer += sizeof(ie_header);
 288		retLen += sizeof(ie_header);
 289
 290		/* Copy the wapi IE buffer to the output buffer, advance
 291		   pointer */
 292		memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
 293
 294		/* Increment the return size and the return buffer pointer
 295		   param */
 296		*buffer += priv->wapi_ie_len;
 297		retLen += priv->wapi_ie_len;
 298
 299	}
 300	/* return the length appended to the buffer */
 301	return retLen;
 302}
 303
 304/*
 305 * This function appends rsn ie tlv for wpa/wpa2 security modes.
 306 * It is called from the network join command preparation routine.
 307 */
 308static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
 309					  u8 **buffer)
 310{
 311	struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
 312	int rsn_ie_len;
 313
 314	if (!buffer || !(*buffer))
 315		return 0;
 316
 317	rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
 318	rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
 319	rsn_ie_tlv->header.type = cpu_to_le16(
 320				 le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
 321	rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
 322	rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
 323							& 0x00FF);
 324	if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
 325		memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
 326					le16_to_cpu(rsn_ie_tlv->header.len));
 327	else
 328		return -1;
 329
 330	rsn_ie_len = sizeof(rsn_ie_tlv->header) +
 331					le16_to_cpu(rsn_ie_tlv->header.len);
 332	*buffer += rsn_ie_len;
 333
 334	return rsn_ie_len;
 335}
 336
 337/*
 338 * This function prepares command for association.
 339 *
 340 * This sets the following parameters -
 341 *      - Peer MAC address
 342 *      - Listen interval
 343 *      - Beacon interval
 344 *      - Capability information
 345 *
 346 * ...and the following TLVs, as required -
 347 *      - SSID TLV
 348 *      - PHY TLV
 349 *      - SS TLV
 350 *      - Rates TLV
 351 *      - Authentication TLV
 352 *      - Channel TLV
 353 *      - WPA/WPA2 IE
 354 *      - 11n TLV
 355 *      - Vendor specific TLV
 356 *      - WMM TLV
 357 *      - WAPI IE
 358 *      - Generic IE
 359 *      - TSF TLV
 360 *
 361 * Preparation also includes -
 362 *      - Setting command ID and proper size
 363 *      - Ensuring correct endian-ness
 364 */
 365int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
 366				 struct host_cmd_ds_command *cmd,
 367				 struct mwifiex_bssdescriptor *bss_desc)
 368{
 369	struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
 370	struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
 371	struct mwifiex_ie_types_phy_param_set *phy_tlv;
 372	struct mwifiex_ie_types_ss_param_set *ss_tlv;
 373	struct mwifiex_ie_types_rates_param_set *rates_tlv;
 374	struct mwifiex_ie_types_auth_type *auth_tlv;
 375	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 376	u8 rates[MWIFIEX_SUPPORTED_RATES];
 377	u32 rates_size;
 378	u16 tmp_cap;
 379	u8 *pos;
 380	int rsn_ie_len = 0;
 381
 382	pos = (u8 *) assoc;
 383
 384	mwifiex_cfg_tx_buf(priv, bss_desc);
 385
 386	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
 387
 388	/* Save so we know which BSS Desc to use in the response handler */
 389	priv->attempted_bss_desc = bss_desc;
 390
 391	memcpy(assoc->peer_sta_addr,
 392	       bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
 393	pos += sizeof(assoc->peer_sta_addr);
 394
 395	/* Set the listen interval */
 396	assoc->listen_interval = cpu_to_le16(priv->listen_interval);
 397	/* Set the beacon period */
 398	assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
 399
 400	pos += sizeof(assoc->cap_info_bitmap);
 401	pos += sizeof(assoc->listen_interval);
 402	pos += sizeof(assoc->beacon_period);
 403	pos += sizeof(assoc->dtim_period);
 404
 405	ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
 406	ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
 407	ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
 408	memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
 409		le16_to_cpu(ssid_tlv->header.len));
 410	pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
 411
 412	phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
 413	phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
 414	phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
 415	memcpy(&phy_tlv->fh_ds.ds_param_set,
 416	       &bss_desc->phy_param_set.ds_param_set.current_chan,
 417	       sizeof(phy_tlv->fh_ds.ds_param_set));
 418	pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
 419
 420	ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
 421	ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
 422	ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
 423	pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
 424
 425	/* Get the common rates supported between the driver and the BSS Desc */
 426	if (mwifiex_setup_rates_from_bssdesc
 427	    (priv, bss_desc, rates, &rates_size))
 428		return -1;
 429
 430	/* Save the data rates into Current BSS state structure */
 431	priv->curr_bss_params.num_of_rates = rates_size;
 432	memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
 433
 434	/* Setup the Rates TLV in the association command */
 435	rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
 436	rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
 437	rates_tlv->header.len = cpu_to_le16((u16) rates_size);
 438	memcpy(rates_tlv->rates, rates, rates_size);
 439	pos += sizeof(rates_tlv->header) + rates_size;
 440	dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
 441					rates_size);
 442
 443	/* Add the Authentication type to be used for Auth frames */
 444	auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
 445	auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 446	auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
 447	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 448		auth_tlv->auth_type = cpu_to_le16(
 449				(u16) priv->sec_info.authentication_mode);
 450	else
 451		auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
 452
 453	pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
 454
 455	if (IS_SUPPORT_MULTI_BANDS(priv->adapter)
 456	    && !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
 457		&& (!bss_desc->disable_11n)
 458		 && (priv->adapter->config_bands & BAND_GN
 459		     || priv->adapter->config_bands & BAND_AN)
 460		 && (bss_desc->bcn_ht_cap)
 461	    )
 462		) {
 463		/* Append a channel TLV for the channel the attempted AP was
 464		   found on */
 465		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 466		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 467		chan_tlv->header.len =
 468			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 469
 470		memset(chan_tlv->chan_scan_param, 0x00,
 471		       sizeof(struct mwifiex_chan_scan_param_set));
 472		chan_tlv->chan_scan_param[0].chan_number =
 473			(bss_desc->phy_param_set.ds_param_set.current_chan);
 474		dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
 475		       chan_tlv->chan_scan_param[0].chan_number);
 476
 477		chan_tlv->chan_scan_param[0].radio_type =
 478			mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 479
 480		dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
 481		       chan_tlv->chan_scan_param[0].radio_type);
 482		pos += sizeof(chan_tlv->header) +
 483			sizeof(struct mwifiex_chan_scan_param_set);
 484	}
 485
 486	if (!priv->wps.session_enable) {
 487		if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 488			rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 489
 490		if (rsn_ie_len == -1)
 491			return -1;
 492	}
 493
 494	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info)
 495		&& (!bss_desc->disable_11n)
 496	    && (priv->adapter->config_bands & BAND_GN
 497		|| priv->adapter->config_bands & BAND_AN))
 498		mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
 499
 500	/* Append vendor specific IE TLV */
 501	mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
 502
 503	mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
 504					    bss_desc->bcn_ht_cap);
 505	if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
 506		mwifiex_cmd_append_wapi_ie(priv, &pos);
 507
 508
 509	mwifiex_cmd_append_generic_ie(priv, &pos);
 510
 511	mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
 512
 513	cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
 514
 515	/* Set the Capability info at last */
 516	tmp_cap = bss_desc->cap_info_bitmap;
 517
 518	if (priv->adapter->config_bands == BAND_B)
 519		tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 520
 521	tmp_cap &= CAPINFO_MASK;
 522	dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
 523	       tmp_cap, CAPINFO_MASK);
 524	assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
 525
 526	return 0;
 527}
 528
 529/*
 530 * Association firmware command response handler
 531 *
 532 * The response buffer for the association command has the following
 533 * memory layout.
 534 *
 535 * For cases where an association response was not received (indicated
 536 * by the CapInfo and AId field):
 537 *
 538 *     .------------------------------------------------------------.
 539 *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 540 *     .------------------------------------------------------------.
 541 *     |  cap_info/Error Return(t_u16):                             |
 542 *     |           0xFFFF(-1): Internal error                       |
 543 *     |           0xFFFE(-2): Authentication unhandled message     |
 544 *     |           0xFFFD(-3): Authentication refused               |
 545 *     |           0xFFFC(-4): Timeout waiting for AP response      |
 546 *     .------------------------------------------------------------.
 547 *     |  status_code(t_u16):                                       |
 548 *     |        If cap_info is -1:                                  |
 549 *     |           An internal firmware failure prevented the       |
 550 *     |           command from being processed.  The status_code   |
 551 *     |           will be set to 1.                                |
 552 *     |                                                            |
 553 *     |        If cap_info is -2:                                  |
 554 *     |           An authentication frame was received but was     |
 555 *     |           not handled by the firmware.  IEEE Status        |
 556 *     |           code for the failure is returned.                |
 557 *     |                                                            |
 558 *     |        If cap_info is -3:                                  |
 559 *     |           An authentication frame was received and the     |
 560 *     |           status_code is the IEEE Status reported in the   |
 561 *     |           response.                                        |
 562 *     |                                                            |
 563 *     |        If cap_info is -4:                                  |
 564 *     |           (1) Association response timeout                 |
 565 *     |           (2) Authentication response timeout              |
 566 *     .------------------------------------------------------------.
 567 *     |  a_id(t_u16): 0xFFFF                                       |
 568 *     .------------------------------------------------------------.
 569 *
 570 *
 571 * For cases where an association response was received, the IEEE
 572 * standard association response frame is returned:
 573 *
 574 *     .------------------------------------------------------------.
 575 *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 576 *     .------------------------------------------------------------.
 577 *     |  cap_info(t_u16): IEEE Capability                          |
 578 *     .------------------------------------------------------------.
 579 *     |  status_code(t_u16): IEEE Status Code                      |
 580 *     .------------------------------------------------------------.
 581 *     |  a_id(t_u16): IEEE Association ID                          |
 582 *     .------------------------------------------------------------.
 583 *     |  IEEE IEs(variable): Any received IEs comprising the       |
 584 *     |                      remaining portion of a received       |
 585 *     |                      association response frame.           |
 586 *     .------------------------------------------------------------.
 587 *
 588 * For simplistic handling, the status_code field can be used to determine
 589 * an association success (0) or failure (non-zero).
 590 */
 591int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
 592			     struct host_cmd_ds_command *resp)
 593{
 594	struct mwifiex_adapter *adapter = priv->adapter;
 595	int ret = 0;
 596	struct ieee_types_assoc_rsp *assoc_rsp;
 597	struct mwifiex_bssdescriptor *bss_desc;
 598	u8 enable_data = true;
 599
 600	assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
 601
 602	priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
 603				     sizeof(priv->assoc_rsp_buf));
 604
 605	memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
 606
 607	if (le16_to_cpu(assoc_rsp->status_code)) {
 608		priv->adapter->dbg.num_cmd_assoc_failure++;
 609		dev_err(priv->adapter->dev, "ASSOC_RESP: association failed, "
 610		       "status code = %d, error = 0x%x, a_id = 0x%x\n",
 611		       le16_to_cpu(assoc_rsp->status_code),
 612		       le16_to_cpu(assoc_rsp->cap_info_bitmap),
 613		       le16_to_cpu(assoc_rsp->a_id));
 614
 615		ret = -1;
 616		goto done;
 617	}
 618
 619	/* Send a Media Connected event, according to the Spec */
 620	priv->media_connected = true;
 621
 622	priv->adapter->ps_state = PS_STATE_AWAKE;
 623	priv->adapter->pps_uapsd_mode = false;
 624	priv->adapter->tx_lock_flag = false;
 625
 626	/* Set the attempted BSSID Index to current */
 627	bss_desc = priv->attempted_bss_desc;
 628
 629	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
 630						bss_desc->ssid.ssid);
 631
 632	/* Make a copy of current BSSID descriptor */
 633	memcpy(&priv->curr_bss_params.bss_descriptor,
 634	       bss_desc, sizeof(struct mwifiex_bssdescriptor));
 635
 636	/* Update curr_bss_params */
 637	priv->curr_bss_params.bss_descriptor.channel
 638		= bss_desc->phy_param_set.ds_param_set.current_chan;
 639
 640	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
 641
 642	/*
 643	 * Adjust the timestamps in the scan table to be relative to the newly
 644	 * associated AP's TSF
 645	 */
 646	mwifiex_update_tsf_timestamps(priv, bss_desc);
 647
 648	if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
 649		priv->curr_bss_params.wmm_enabled = true;
 650	else
 651		priv->curr_bss_params.wmm_enabled = false;
 652
 653	if ((priv->wmm_required || bss_desc->bcn_ht_cap)
 654			&& priv->curr_bss_params.wmm_enabled)
 655		priv->wmm_enabled = true;
 656	else
 657		priv->wmm_enabled = false;
 658
 659	priv->curr_bss_params.wmm_uapsd_enabled = false;
 660
 661	if (priv->wmm_enabled)
 662		priv->curr_bss_params.wmm_uapsd_enabled
 663			= ((bss_desc->wmm_ie.qos_info_bitmap &
 664				IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
 665
 666	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
 667	       priv->curr_pkt_filter);
 668	if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 669		priv->wpa_is_gtk_set = false;
 670
 671	if (priv->wmm_enabled) {
 672		/* Don't re-enable carrier until we get the WMM_GET_STATUS
 673		   event */
 674		enable_data = false;
 675	} else {
 676		/* Since WMM is not enabled, setup the queues with the
 677		   defaults */
 678		mwifiex_wmm_setup_queue_priorities(priv, NULL);
 679		mwifiex_wmm_setup_ac_downgrade(priv);
 680	}
 681
 682	if (enable_data)
 683		dev_dbg(priv->adapter->dev,
 684			"info: post association, re-enabling data flow\n");
 685
 686	/* Reset SNR/NF/RSSI values */
 687	priv->data_rssi_last = 0;
 688	priv->data_nf_last = 0;
 689	priv->data_rssi_avg = 0;
 690	priv->data_nf_avg = 0;
 691	priv->bcn_rssi_last = 0;
 692	priv->bcn_nf_last = 0;
 693	priv->bcn_rssi_avg = 0;
 694	priv->bcn_nf_avg = 0;
 695	priv->rxpd_rate = 0;
 696	priv->rxpd_htinfo = 0;
 697
 698	mwifiex_save_curr_bcn(priv);
 699
 700	priv->adapter->dbg.num_cmd_assoc_success++;
 701
 702	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
 703
 704	/* Add the ra_list here for infra mode as there will be only 1 ra
 705	   always */
 706	mwifiex_ralist_add(priv,
 707			   priv->curr_bss_params.bss_descriptor.mac_address);
 708
 709	if (!netif_carrier_ok(priv->netdev))
 710		netif_carrier_on(priv->netdev);
 711	if (netif_queue_stopped(priv->netdev))
 712		netif_wake_queue(priv->netdev);
 713
 714	if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 715		priv->scan_block = true;
 716
 717done:
 718	/* Need to indicate IOCTL complete */
 719	if (adapter->curr_cmd->wait_q_enabled) {
 720		if (ret)
 721			adapter->cmd_wait_q.status = -1;
 722		else
 723			adapter->cmd_wait_q.status = 0;
 724	}
 725
 726	return ret;
 727}
 728
 729/*
 730 * This function prepares command for ad-hoc start.
 731 *
 732 * Driver will fill up SSID, BSS mode, IBSS parameters, physical
 733 * parameters, probe delay, and capability information. Firmware
 734 * will fill up beacon period, basic rates and operational rates.
 735 *
 736 * In addition, the following TLVs are added -
 737 *      - Channel TLV
 738 *      - Vendor specific IE
 739 *      - WPA/WPA2 IE
 740 *      - HT Capabilities IE
 741 *      - HT Information IE
 742 *
 743 * Preparation also includes -
 744 *      - Setting command ID and proper size
 745 *      - Ensuring correct endian-ness
 746 */
 747int
 748mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 749				struct host_cmd_ds_command *cmd,
 750				struct mwifiex_802_11_ssid *req_ssid)
 751{
 752	int rsn_ie_len = 0;
 753	struct mwifiex_adapter *adapter = priv->adapter;
 754	struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
 755		&cmd->params.adhoc_start;
 756	struct mwifiex_bssdescriptor *bss_desc;
 757	u32 cmd_append_size = 0;
 758	u32 i;
 759	u16 tmp_cap;
 760	uint16_t ht_cap_info;
 761	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 762
 763	struct mwifiex_ie_types_htcap *ht_cap;
 764	struct mwifiex_ie_types_htinfo *ht_info;
 765	u8 *pos = (u8 *) adhoc_start +
 766			sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
 767
 768	if (!adapter)
 769		return -1;
 770
 771	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
 772
 773	bss_desc = &priv->curr_bss_params.bss_descriptor;
 774	priv->attempted_bss_desc = bss_desc;
 775
 776	/*
 777	 * Fill in the parameters for 2 data structures:
 778	 *   1. struct host_cmd_ds_802_11_ad_hoc_start command
 779	 *   2. bss_desc
 780	 * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
 781	 * probe delay, and Cap info.
 782	 * Firmware will fill up beacon period, Basic rates
 783	 * and operational rates.
 784	 */
 785
 786	memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
 787
 788	memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
 789
 790	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
 791				adhoc_start->ssid);
 792
 793	memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
 794	memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
 795
 796	bss_desc->ssid.ssid_len = req_ssid->ssid_len;
 797
 798	/* Set the BSS mode */
 799	adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
 800	bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 801	adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
 802	bss_desc->beacon_period = priv->beacon_period;
 803
 804	/* Set Physical param set */
 805/* Parameter IE Id */
 806#define DS_PARA_IE_ID   3
 807/* Parameter IE length */
 808#define DS_PARA_IE_LEN  1
 809
 810	adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
 811	adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
 812
 813	if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 814			(priv, adapter->adhoc_start_band, (u16)
 815				priv->adhoc_channel)) {
 816		struct mwifiex_chan_freq_power *cfp;
 817		cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211(priv,
 818				adapter->adhoc_start_band, FIRST_VALID_CHANNEL);
 819		if (cfp)
 820			priv->adhoc_channel = (u8) cfp->channel;
 821	}
 822
 823	if (!priv->adhoc_channel) {
 824		dev_err(adapter->dev, "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
 825		return -1;
 826	}
 827
 828	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
 829				priv->adhoc_channel);
 830
 831	priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
 832	priv->curr_bss_params.band = adapter->adhoc_start_band;
 833
 834	bss_desc->channel = priv->adhoc_channel;
 835	adhoc_start->phy_param_set.ds_param_set.current_chan =
 836		priv->adhoc_channel;
 837
 838	memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
 839	       sizeof(union ieee_types_phy_param_set));
 840
 841	/* Set IBSS param set */
 842/* IBSS parameter IE Id */
 843#define IBSS_PARA_IE_ID   6
 844/* IBSS parameter IE length */
 845#define IBSS_PARA_IE_LEN  2
 846
 847	adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
 848	adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
 849	adhoc_start->ss_param_set.ibss_param_set.atim_window
 850		= cpu_to_le16(priv->atim_window);
 851	memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
 852	       sizeof(union ieee_types_ss_param_set));
 853
 854	/* Set Capability info */
 855	bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
 856	tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
 857	tmp_cap &= ~WLAN_CAPABILITY_ESS;
 858	tmp_cap |= WLAN_CAPABILITY_IBSS;
 859
 860	/* Set up privacy in bss_desc */
 861	if (priv->sec_info.encryption_mode) {
 862		/* Ad-Hoc capability privacy on */
 863		dev_dbg(adapter->dev,
 864			"info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
 865		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 866		tmp_cap |= WLAN_CAPABILITY_PRIVACY;
 867	} else {
 868		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: wep_status NOT set,"
 869				" setting privacy to ACCEPT ALL\n");
 870		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 871	}
 872
 873	memset(adhoc_start->DataRate, 0, sizeof(adhoc_start->DataRate));
 874	mwifiex_get_active_data_rates(priv, adhoc_start->DataRate);
 875	if ((adapter->adhoc_start_band & BAND_G) &&
 876	    (priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
 877		if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 878					     HostCmd_ACT_GEN_SET, 0,
 879					     &priv->curr_pkt_filter)) {
 880			dev_err(adapter->dev,
 881			       "ADHOC_S_CMD: G Protection config failed\n");
 882			return -1;
 883		}
 884	}
 885	/* Find the last non zero */
 886	for (i = 0; i < sizeof(adhoc_start->DataRate) &&
 887			adhoc_start->DataRate[i];
 888			i++)
 889			;
 890
 891	priv->curr_bss_params.num_of_rates = i;
 892
 893	/* Copy the ad-hoc creating rates into Current BSS rate structure */
 894	memcpy(&priv->curr_bss_params.data_rates,
 895	       &adhoc_start->DataRate, priv->curr_bss_params.num_of_rates);
 896
 897	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%02x %02x %02x %02x\n",
 898	       adhoc_start->DataRate[0], adhoc_start->DataRate[1],
 899	       adhoc_start->DataRate[2], adhoc_start->DataRate[3]);
 900
 901	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
 902
 903	if (IS_SUPPORT_MULTI_BANDS(adapter)) {
 904		/* Append a channel TLV */
 905		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 906		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 907		chan_tlv->header.len =
 908			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 909
 910		memset(chan_tlv->chan_scan_param, 0x00,
 911		       sizeof(struct mwifiex_chan_scan_param_set));
 912		chan_tlv->chan_scan_param[0].chan_number =
 913			(u8) priv->curr_bss_params.bss_descriptor.channel;
 914
 915		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
 916		       chan_tlv->chan_scan_param[0].chan_number);
 917
 918		chan_tlv->chan_scan_param[0].radio_type
 919		       = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 920		if (adapter->adhoc_start_band & BAND_GN
 921		    || adapter->adhoc_start_band & BAND_AN) {
 922			if (adapter->chan_offset == SEC_CHANNEL_ABOVE)
 923				chan_tlv->chan_scan_param[0].radio_type |=
 924					SECOND_CHANNEL_ABOVE;
 925			else if (adapter->chan_offset == SEC_CHANNEL_BELOW)
 926				chan_tlv->chan_scan_param[0].radio_type |=
 927					SECOND_CHANNEL_BELOW;
 928		}
 929		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
 930		       chan_tlv->chan_scan_param[0].radio_type);
 931		pos += sizeof(chan_tlv->header) +
 932			sizeof(struct mwifiex_chan_scan_param_set);
 933		cmd_append_size +=
 934			sizeof(chan_tlv->header) +
 935			sizeof(struct mwifiex_chan_scan_param_set);
 936	}
 937
 938	/* Append vendor specific IE TLV */
 939	cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
 940				MWIFIEX_VSIE_MASK_ADHOC, &pos);
 941
 942	if (priv->sec_info.wpa_enabled) {
 943		rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 944		if (rsn_ie_len == -1)
 945			return -1;
 946		cmd_append_size += rsn_ie_len;
 947	}
 948
 949	if (adapter->adhoc_11n_enabled) {
 950		{
 951			ht_cap = (struct mwifiex_ie_types_htcap *) pos;
 952			memset(ht_cap, 0,
 953			       sizeof(struct mwifiex_ie_types_htcap));
 954			ht_cap->header.type =
 955				cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 956			ht_cap->header.len =
 957			       cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 958			ht_cap_info = le16_to_cpu(ht_cap->ht_cap.cap_info);
 959
 960			ht_cap_info |= IEEE80211_HT_CAP_SGI_20;
 961			if (adapter->chan_offset) {
 962				ht_cap_info |= IEEE80211_HT_CAP_SGI_40;
 963				ht_cap_info |= IEEE80211_HT_CAP_DSSSCCK40;
 964				ht_cap_info |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 965				SETHT_MCS32(ht_cap->ht_cap.mcs.rx_mask);
 966			}
 967
 968			ht_cap->ht_cap.ampdu_params_info
 969					= IEEE80211_HT_MAX_AMPDU_64K;
 970			ht_cap->ht_cap.mcs.rx_mask[0] = 0xff;
 971			pos += sizeof(struct mwifiex_ie_types_htcap);
 972			cmd_append_size +=
 973				sizeof(struct mwifiex_ie_types_htcap);
 974		}
 975		{
 976			ht_info = (struct mwifiex_ie_types_htinfo *) pos;
 977			memset(ht_info, 0,
 978			       sizeof(struct mwifiex_ie_types_htinfo));
 979			ht_info->header.type =
 980				cpu_to_le16(WLAN_EID_HT_INFORMATION);
 981			ht_info->header.len =
 982				cpu_to_le16(sizeof(struct ieee80211_ht_info));
 983			ht_info->ht_info.control_chan =
 984				(u8) priv->curr_bss_params.bss_descriptor.
 985				channel;
 986			if (adapter->chan_offset) {
 987				ht_info->ht_info.ht_param =
 988					adapter->chan_offset;
 989				ht_info->ht_info.ht_param |=
 990					IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
 991			}
 992			ht_info->ht_info.operation_mode =
 993			     cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 994			ht_info->ht_info.basic_set[0] = 0xff;
 995			pos += sizeof(struct mwifiex_ie_types_htinfo);
 996			cmd_append_size +=
 997				sizeof(struct mwifiex_ie_types_htinfo);
 998		}
 999	}
1000
1001	cmd->size = cpu_to_le16((u16)
1002			    (sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
1003			     + S_DS_GEN + cmd_append_size));
1004
1005	if (adapter->adhoc_start_band == BAND_B)
1006		tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
1007	else
1008		tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
1009
1010	adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
1011
1012	return 0;
1013}
1014
1015/*
1016 * This function prepares command for ad-hoc join.
1017 *
1018 * Most of the parameters are set up by copying from the target BSS descriptor
1019 * from the scan response.
1020 *
1021 * In addition, the following TLVs are added -
1022 *      - Channel TLV
1023 *      - Vendor specific IE
1024 *      - WPA/WPA2 IE
1025 *      - 11n IE
1026 *
1027 * Preparation also includes -
1028 *      - Setting command ID and proper size
1029 *      - Ensuring correct endian-ness
1030 */
1031int
1032mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
1033			       struct host_cmd_ds_command *cmd,
1034			       struct mwifiex_bssdescriptor *bss_desc)
1035{
1036	int rsn_ie_len = 0;
1037	struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
1038		&cmd->params.adhoc_join;
1039	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
1040	u32 cmd_append_size = 0;
1041	u16 tmp_cap;
1042	u32 i, rates_size = 0;
1043	u16 curr_pkt_filter;
1044	u8 *pos =
1045		(u8 *) adhoc_join +
1046		sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
1047
1048/* Use G protection */
1049#define USE_G_PROTECTION        0x02
1050	if (bss_desc->erp_flags & USE_G_PROTECTION) {
1051		curr_pkt_filter =
1052			priv->
1053			curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
1054
1055		if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
1056					     HostCmd_ACT_GEN_SET, 0,
1057					     &curr_pkt_filter)) {
1058			dev_err(priv->adapter->dev,
1059			       "ADHOC_J_CMD: G Protection config failed\n");
1060			return -1;
1061		}
1062	}
1063
1064	priv->attempted_bss_desc = bss_desc;
1065
1066	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
1067
1068	adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
1069
1070	adhoc_join->bss_descriptor.beacon_period
1071		= cpu_to_le16(bss_desc->beacon_period);
1072
1073	memcpy(&adhoc_join->bss_descriptor.bssid,
1074	       &bss_desc->mac_address, ETH_ALEN);
1075
1076	memcpy(&adhoc_join->bss_descriptor.ssid,
1077	       &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
1078
1079	memcpy(&adhoc_join->bss_descriptor.phy_param_set,
1080	       &bss_desc->phy_param_set,
1081	       sizeof(union ieee_types_phy_param_set));
1082
1083	memcpy(&adhoc_join->bss_descriptor.ss_param_set,
1084	       &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
1085
1086	tmp_cap = bss_desc->cap_info_bitmap;
1087
1088	tmp_cap &= CAPINFO_MASK;
1089
1090	dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: tmp_cap=%4X"
1091			" CAPINFO_MASK=%4lX\n", tmp_cap, CAPINFO_MASK);
1092
1093	/* Information on BSSID descriptor passed to FW */
1094	dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID = %pM, SSID = %s\n",
1095				adhoc_join->bss_descriptor.bssid,
1096				adhoc_join->bss_descriptor.ssid);
1097
1098	for (i = 0; bss_desc->supported_rates[i] &&
1099			i < MWIFIEX_SUPPORTED_RATES;
1100			i++)
1101			;
1102	rates_size = i;
1103
1104	/* Copy Data Rates from the Rates recorded in scan response */
1105	memset(adhoc_join->bss_descriptor.data_rates, 0,
1106	       sizeof(adhoc_join->bss_descriptor.data_rates));
1107	memcpy(adhoc_join->bss_descriptor.data_rates,
1108	       bss_desc->supported_rates, rates_size);
1109
1110	/* Copy the adhoc join rates into Current BSS state structure */
1111	priv->curr_bss_params.num_of_rates = rates_size;
1112	memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
1113	       rates_size);
1114
1115	/* Copy the channel information */
1116	priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
1117	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
1118
1119	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED
1120	    || priv->sec_info.wpa_enabled)
1121		tmp_cap |= WLAN_CAPABILITY_PRIVACY;
1122
1123	if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
1124		/* Append a channel TLV */
1125		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
1126		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
1127		chan_tlv->header.len =
1128			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
1129
1130		memset(chan_tlv->chan_scan_param, 0x00,
1131		       sizeof(struct mwifiex_chan_scan_param_set));
1132		chan_tlv->chan_scan_param[0].chan_number =
1133			(bss_desc->phy_param_set.ds_param_set.current_chan);
1134		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan = %d\n",
1135		       chan_tlv->chan_scan_param[0].chan_number);
1136
1137		chan_tlv->chan_scan_param[0].radio_type =
1138			mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
1139
1140		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band = %d\n",
1141		       chan_tlv->chan_scan_param[0].radio_type);
1142		pos += sizeof(chan_tlv->header) +
1143			sizeof(struct mwifiex_chan_scan_param_set);
1144		cmd_append_size += sizeof(chan_tlv->header) +
1145			sizeof(struct mwifiex_chan_scan_param_set);
1146	}
1147
1148	if (priv->sec_info.wpa_enabled)
1149		rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1150	if (rsn_ie_len == -1)
1151		return -1;
1152	cmd_append_size += rsn_ie_len;
1153
1154	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
1155		cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
1156			bss_desc, &pos);
1157
1158	/* Append vendor specific IE TLV */
1159	cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1160			MWIFIEX_VSIE_MASK_ADHOC, &pos);
1161
1162	cmd->size = cpu_to_le16((u16)
1163			    (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
1164			     + S_DS_GEN + cmd_append_size));
1165
1166	adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
1167
1168	return 0;
1169}
1170
1171/*
1172 * This function handles the command response of ad-hoc start and
1173 * ad-hoc join.
1174 *
1175 * The function generates a device-connected event to notify
1176 * the applications, in case of successful ad-hoc start/join, and
1177 * saves the beacon buffer.
1178 */
1179int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
1180			      struct host_cmd_ds_command *resp)
1181{
1182	int ret = 0;
1183	struct mwifiex_adapter *adapter = priv->adapter;
1184	struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
1185	struct mwifiex_bssdescriptor *bss_desc;
1186
1187	adhoc_result = &resp->params.adhoc_result;
1188
1189	bss_desc = priv->attempted_bss_desc;
1190
1191	/* Join result code 0 --> SUCCESS */
1192	if (le16_to_cpu(resp->result)) {
1193		dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
1194		if (priv->media_connected)
1195			mwifiex_reset_connect_state(priv);
1196
1197		memset(&priv->curr_bss_params.bss_descriptor,
1198		       0x00, sizeof(struct mwifiex_bssdescriptor));
1199
1200		ret = -1;
1201		goto done;
1202	}
1203
1204	/* Send a Media Connected event, according to the Spec */
1205	priv->media_connected = true;
1206
1207	if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
1208		dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
1209				bss_desc->ssid.ssid);
1210
1211		/* Update the created network descriptor with the new BSSID */
1212		memcpy(bss_desc->mac_address,
1213		       adhoc_result->bssid, ETH_ALEN);
1214
1215		priv->adhoc_state = ADHOC_STARTED;
1216	} else {
1217		/*
1218		 * Now the join cmd should be successful.
1219		 * If BSSID has changed use SSID to compare instead of BSSID
1220		 */
1221		dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
1222				bss_desc->ssid.ssid);
1223
1224		/*
1225		 * Make a copy of current BSSID descriptor, only needed for
1226		 * join since the current descriptor is already being used
1227		 * for adhoc start
1228		 */
1229		memcpy(&priv->curr_bss_params.bss_descriptor,
1230		       bss_desc, sizeof(struct mwifiex_bssdescriptor));
1231
1232		priv->adhoc_state = ADHOC_JOINED;
1233	}
1234
1235	dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
1236				priv->adhoc_channel);
1237	dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
1238	       priv->curr_bss_params.bss_descriptor.mac_address);
1239
1240	if (!netif_carrier_ok(priv->netdev))
1241		netif_carrier_on(priv->netdev);
1242	if (netif_queue_stopped(priv->netdev))
1243		netif_wake_queue(priv->netdev);
1244
1245	mwifiex_save_curr_bcn(priv);
1246
1247done:
1248	/* Need to indicate IOCTL complete */
1249	if (adapter->curr_cmd->wait_q_enabled) {
1250		if (ret)
1251			adapter->cmd_wait_q.status = -1;
1252		else
1253			adapter->cmd_wait_q.status = 0;
1254
1255	}
1256
1257	return ret;
1258}
1259
1260/*
1261 * This function associates to a specific BSS discovered in a scan.
1262 *
1263 * It clears any past association response stored for application
1264 * retrieval and calls the command preparation routine to send the
1265 * command to firmware.
1266 */
1267int mwifiex_associate(struct mwifiex_private *priv,
1268		      struct mwifiex_bssdescriptor *bss_desc)
1269{
1270	u8 current_bssid[ETH_ALEN];
1271
1272	/* Return error if the adapter or table entry is not marked as infra */
1273	if ((priv->bss_mode != NL80211_IFTYPE_STATION) ||
1274	    (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
1275		return -1;
1276
1277	memcpy(&current_bssid,
1278	       &priv->curr_bss_params.bss_descriptor.mac_address,
1279	       sizeof(current_bssid));
1280
1281	/* Clear any past association response stored for application
1282	   retrieval */
1283	priv->assoc_rsp_size = 0;
1284
1285	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
1286				    HostCmd_ACT_GEN_SET, 0, bss_desc);
1287}
1288
1289/*
1290 * This function starts an ad-hoc network.
1291 *
1292 * It calls the command preparation routine to send the command to firmware.
1293 */
1294int
1295mwifiex_adhoc_start(struct mwifiex_private *priv,
1296		    struct mwifiex_802_11_ssid *adhoc_ssid)
1297{
1298	dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
1299		priv->adhoc_channel);
1300	dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1301	       priv->curr_bss_params.bss_descriptor.channel);
1302	dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
1303	       priv->curr_bss_params.band);
1304
1305	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
1306				    HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
1307}
1308
1309/*
1310 * This function joins an ad-hoc network found in a previous scan.
1311 *
1312 * It calls the command preparation routine to send the command to firmware,
1313 * if already not connected to the requested SSID.
1314 */
1315int mwifiex_adhoc_join(struct mwifiex_private *priv,
1316		       struct mwifiex_bssdescriptor *bss_desc)
1317{
1318	dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
1319	       priv->curr_bss_params.bss_descriptor.ssid.ssid);
1320	dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
1321	       priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
1322	dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
1323		bss_desc->ssid.ssid);
1324	dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
1325	       bss_desc->ssid.ssid_len);
1326
1327	/* Check if the requested SSID is already joined */
1328	if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
1329	    !mwifiex_ssid_cmp(&bss_desc->ssid,
1330			      &priv->curr_bss_params.bss_descriptor.ssid) &&
1331	    (priv->curr_bss_params.bss_descriptor.bss_mode ==
1332							NL80211_IFTYPE_ADHOC)) {
1333		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
1334			" is the same as current; not attempting to re-join\n");
1335		return -1;
1336	}
1337
1338	dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1339	       priv->curr_bss_params.bss_descriptor.channel);
1340	dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
1341	       priv->curr_bss_params.band);
1342
1343	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
1344				    HostCmd_ACT_GEN_SET, 0, bss_desc);
1345}
1346
1347/*
1348 * This function deauthenticates/disconnects from infra network by sending
1349 * deauthentication request.
1350 */
1351static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
1352{
1353	u8 mac_address[ETH_ALEN];
1354	int ret;
1355	u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1356
1357	if (mac) {
1358		if (!memcmp(mac, zero_mac, sizeof(zero_mac)))
1359			memcpy((u8 *) &mac_address,
1360			       (u8 *) &priv->curr_bss_params.bss_descriptor.
1361			       mac_address, ETH_ALEN);
1362		else
1363			memcpy((u8 *) &mac_address, (u8 *) mac, ETH_ALEN);
1364	} else {
1365		memcpy((u8 *) &mac_address, (u8 *) &priv->curr_bss_params.
1366		       bss_descriptor.mac_address, ETH_ALEN);
1367	}
1368
1369	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1370				    HostCmd_ACT_GEN_SET, 0, &mac_address);
1371
1372	return ret;
1373}
1374
1375/*
1376 * This function deauthenticates/disconnects from a BSS.
1377 *
1378 * In case of infra made, it sends deauthentication request, and
1379 * in case of ad-hoc mode, a stop network request is sent to the firmware.
1380 */
1381int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
1382{
1383	int ret = 0;
1384
1385	if (priv->media_connected) {
1386		if (priv->bss_mode == NL80211_IFTYPE_STATION) {
1387			ret = mwifiex_deauthenticate_infra(priv, mac);
1388		} else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1389			ret = mwifiex_send_cmd_sync(priv,
1390						HostCmd_CMD_802_11_AD_HOC_STOP,
1391						HostCmd_ACT_GEN_SET, 0, NULL);
1392		}
1393	}
1394
1395	return ret;
1396}
1397EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
1398
1399/*
1400 * This function converts band to radio type used in channel TLV.
1401 */
1402u8
1403mwifiex_band_to_radio_type(u8 band)
1404{
1405	switch (band) {
1406	case BAND_A:
1407	case BAND_AN:
1408	case BAND_A | BAND_AN:
1409		return HostCmd_SCAN_RADIO_TYPE_A;
1410	case BAND_B:
1411	case BAND_G:
1412	case BAND_B | BAND_G:
1413	default:
1414		return HostCmd_SCAN_RADIO_TYPE_BG;
1415	}
1416}