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

http://github.com/mirrors/linux
C | 1471 lines | 890 code | 234 blank | 347 comment | 124 complexity | 3f6f537f2fd02f6b8a8340c93c37efb0 MD5 | raw file
   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#include "11ac.h"
  28
  29#define CAPINFO_MASK    (~(BIT(15) | BIT(14) | BIT(12) | BIT(11) | BIT(9)))
  30
  31/*
  32 * Append a generic IE as a pass through TLV to a TLV buffer.
  33 *
  34 * This function is called from the network join command preparation routine.
  35 *
  36 * If the IE buffer has been setup by the application, this routine appends
  37 * the buffer as a pass through TLV type to the request.
  38 */
  39static int
  40mwifiex_cmd_append_generic_ie(struct mwifiex_private *priv, u8 **buffer)
  41{
  42	int ret_len = 0;
  43	struct mwifiex_ie_types_header ie_header;
  44
  45	/* Null Checks */
  46	if (!buffer)
  47		return 0;
  48	if (!(*buffer))
  49		return 0;
  50
  51	/*
  52	 * If there is a generic ie buffer setup, append it to the return
  53	 *   parameter buffer pointer.
  54	 */
  55	if (priv->gen_ie_buf_len) {
  56		dev_dbg(priv->adapter->dev,
  57			"info: %s: append generic ie len %d to %p\n",
  58			__func__, priv->gen_ie_buf_len, *buffer);
  59
  60		/* Wrap the generic IE buffer with a pass through TLV type */
  61		ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
  62		ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
  63		memcpy(*buffer, &ie_header, sizeof(ie_header));
  64
  65		/* Increment the return size and the return buffer pointer
  66		   param */
  67		*buffer += sizeof(ie_header);
  68		ret_len += sizeof(ie_header);
  69
  70		/* Copy the generic IE buffer to the output buffer, advance
  71		   pointer */
  72		memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
  73
  74		/* Increment the return size and the return buffer pointer
  75		   param */
  76		*buffer += priv->gen_ie_buf_len;
  77		ret_len += priv->gen_ie_buf_len;
  78
  79		/* Reset the generic IE buffer */
  80		priv->gen_ie_buf_len = 0;
  81	}
  82
  83	/* return the length appended to the buffer */
  84	return ret_len;
  85}
  86
  87/*
  88 * Append TSF tracking info from the scan table for the target AP.
  89 *
  90 * This function is called from the network join command preparation routine.
  91 *
  92 * The TSF table TSF sent to the firmware contains two TSF values:
  93 *      - The TSF of the target AP from its previous beacon/probe response
  94 *      - The TSF timestamp of our local MAC at the time we observed the
  95 *        beacon/probe response.
  96 *
  97 * The firmware uses the timestamp values to set an initial TSF value
  98 * in the MAC for the new association after a reassociation attempt.
  99 */
 100static int
 101mwifiex_cmd_append_tsf_tlv(struct mwifiex_private *priv, u8 **buffer,
 102			   struct mwifiex_bssdescriptor *bss_desc)
 103{
 104	struct mwifiex_ie_types_tsf_timestamp tsf_tlv;
 105	__le64 tsf_val;
 106
 107	/* Null Checks */
 108	if (buffer == NULL)
 109		return 0;
 110	if (*buffer == NULL)
 111		return 0;
 112
 113	memset(&tsf_tlv, 0x00, sizeof(struct mwifiex_ie_types_tsf_timestamp));
 114
 115	tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
 116	tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
 117
 118	memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
 119	*buffer += sizeof(tsf_tlv.header);
 120
 121	/* TSF at the time when beacon/probe_response was received */
 122	tsf_val = cpu_to_le64(bss_desc->fw_tsf);
 123	memcpy(*buffer, &tsf_val, sizeof(tsf_val));
 124	*buffer += sizeof(tsf_val);
 125
 126	tsf_val = cpu_to_le64(bss_desc->timestamp);
 127
 128	dev_dbg(priv->adapter->dev,
 129		"info: %s: TSF offset calc: %016llx - %016llx\n",
 130		__func__, bss_desc->timestamp, bss_desc->fw_tsf);
 131
 132	memcpy(*buffer, &tsf_val, sizeof(tsf_val));
 133	*buffer += sizeof(tsf_val);
 134
 135	return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
 136}
 137
 138/*
 139 * This function finds out the common rates between rate1 and rate2.
 140 *
 141 * It will fill common rates in rate1 as output if found.
 142 *
 143 * NOTE: Setting the MSB of the basic rates needs to be taken
 144 * care of, either before or after calling this function.
 145 */
 146static int mwifiex_get_common_rates(struct mwifiex_private *priv, u8 *rate1,
 147				    u32 rate1_size, u8 *rate2, u32 rate2_size)
 148{
 149	int ret;
 150	u8 *ptr = rate1, *tmp;
 151	u32 i, j;
 152
 153	tmp = kmemdup(rate1, rate1_size, GFP_KERNEL);
 154	if (!tmp) {
 155		dev_err(priv->adapter->dev, "failed to alloc tmp buf\n");
 156		return -ENOMEM;
 157	}
 158
 159	memset(rate1, 0, rate1_size);
 160
 161	for (i = 0; i < rate2_size && rate2[i]; i++) {
 162		for (j = 0; j < rate1_size && tmp[j]; j++) {
 163			/* Check common rate, excluding the bit for
 164			   basic rate */
 165			if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
 166				*rate1++ = tmp[j];
 167				break;
 168			}
 169		}
 170	}
 171
 172	dev_dbg(priv->adapter->dev, "info: Tx data rate set to %#x\n",
 173		priv->data_rate);
 174
 175	if (!priv->is_data_rate_auto) {
 176		while (*ptr) {
 177			if ((*ptr & 0x7f) == priv->data_rate) {
 178				ret = 0;
 179				goto done;
 180			}
 181			ptr++;
 182		}
 183		dev_err(priv->adapter->dev, "previously set fixed data rate %#x"
 184			" is not compatible with the network\n",
 185			priv->data_rate);
 186
 187		ret = -1;
 188		goto done;
 189	}
 190
 191	ret = 0;
 192done:
 193	kfree(tmp);
 194	return ret;
 195}
 196
 197/*
 198 * This function creates the intersection of the rates supported by a
 199 * target BSS and our adapter settings for use in an assoc/join command.
 200 */
 201static int
 202mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
 203				 struct mwifiex_bssdescriptor *bss_desc,
 204				 u8 *out_rates, u32 *out_rates_size)
 205{
 206	u8 card_rates[MWIFIEX_SUPPORTED_RATES];
 207	u32 card_rates_size;
 208
 209	/* Copy AP supported rates */
 210	memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
 211	/* Get the STA supported rates */
 212	card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
 213	/* Get the common rates between AP and STA supported rates */
 214	if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
 215				     card_rates, card_rates_size)) {
 216		*out_rates_size = 0;
 217		dev_err(priv->adapter->dev, "%s: cannot get common rates\n",
 218			__func__);
 219		return -1;
 220	}
 221
 222	*out_rates_size =
 223		min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
 224
 225	return 0;
 226}
 227
 228/*
 229 * This function appends a WPS IE. It is called from the network join command
 230 * preparation routine.
 231 *
 232 * If the IE buffer has been setup by the application, this routine appends
 233 * the buffer as a WPS TLV type to the request.
 234 */
 235static int
 236mwifiex_cmd_append_wps_ie(struct mwifiex_private *priv, u8 **buffer)
 237{
 238	int retLen = 0;
 239	struct mwifiex_ie_types_header ie_header;
 240
 241	if (!buffer || !*buffer)
 242		return 0;
 243
 244	/*
 245	 * If there is a wps ie buffer setup, append it to the return
 246	 * parameter buffer pointer.
 247	 */
 248	if (priv->wps_ie_len) {
 249		dev_dbg(priv->adapter->dev, "cmd: append wps ie %d to %p\n",
 250			priv->wps_ie_len, *buffer);
 251
 252		/* Wrap the generic IE buffer with a pass through TLV type */
 253		ie_header.type = cpu_to_le16(TLV_TYPE_MGMT_IE);
 254		ie_header.len = cpu_to_le16(priv->wps_ie_len);
 255		memcpy(*buffer, &ie_header, sizeof(ie_header));
 256		*buffer += sizeof(ie_header);
 257		retLen += sizeof(ie_header);
 258
 259		memcpy(*buffer, priv->wps_ie, priv->wps_ie_len);
 260		*buffer += priv->wps_ie_len;
 261		retLen += priv->wps_ie_len;
 262
 263	}
 264
 265	kfree(priv->wps_ie);
 266	priv->wps_ie_len = 0;
 267	return retLen;
 268}
 269
 270/*
 271 * This function appends a WAPI IE.
 272 *
 273 * This function is called from the network join command preparation routine.
 274 *
 275 * If the IE buffer has been setup by the application, this routine appends
 276 * the buffer as a WAPI TLV type to the request.
 277 */
 278static int
 279mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
 280{
 281	int retLen = 0;
 282	struct mwifiex_ie_types_header ie_header;
 283
 284	/* Null Checks */
 285	if (buffer == NULL)
 286		return 0;
 287	if (*buffer == NULL)
 288		return 0;
 289
 290	/*
 291	 * If there is a wapi ie buffer setup, append it to the return
 292	 *   parameter buffer pointer.
 293	 */
 294	if (priv->wapi_ie_len) {
 295		dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
 296			priv->wapi_ie_len, *buffer);
 297
 298		/* Wrap the generic IE buffer with a pass through TLV type */
 299		ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
 300		ie_header.len = cpu_to_le16(priv->wapi_ie_len);
 301		memcpy(*buffer, &ie_header, sizeof(ie_header));
 302
 303		/* Increment the return size and the return buffer pointer
 304		   param */
 305		*buffer += sizeof(ie_header);
 306		retLen += sizeof(ie_header);
 307
 308		/* Copy the wapi IE buffer to the output buffer, advance
 309		   pointer */
 310		memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
 311
 312		/* Increment the return size and the return buffer pointer
 313		   param */
 314		*buffer += priv->wapi_ie_len;
 315		retLen += priv->wapi_ie_len;
 316
 317	}
 318	/* return the length appended to the buffer */
 319	return retLen;
 320}
 321
 322/*
 323 * This function appends rsn ie tlv for wpa/wpa2 security modes.
 324 * It is called from the network join command preparation routine.
 325 */
 326static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
 327					  u8 **buffer)
 328{
 329	struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
 330	int rsn_ie_len;
 331
 332	if (!buffer || !(*buffer))
 333		return 0;
 334
 335	rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
 336	rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
 337	rsn_ie_tlv->header.type = cpu_to_le16(
 338				 le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
 339	rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
 340	rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
 341							 & 0x00FF);
 342	if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
 343		memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
 344		       le16_to_cpu(rsn_ie_tlv->header.len));
 345	else
 346		return -1;
 347
 348	rsn_ie_len = sizeof(rsn_ie_tlv->header) +
 349					le16_to_cpu(rsn_ie_tlv->header.len);
 350	*buffer += rsn_ie_len;
 351
 352	return rsn_ie_len;
 353}
 354
 355/*
 356 * This function prepares command for association.
 357 *
 358 * This sets the following parameters -
 359 *      - Peer MAC address
 360 *      - Listen interval
 361 *      - Beacon interval
 362 *      - Capability information
 363 *
 364 * ...and the following TLVs, as required -
 365 *      - SSID TLV
 366 *      - PHY TLV
 367 *      - SS TLV
 368 *      - Rates TLV
 369 *      - Authentication TLV
 370 *      - Channel TLV
 371 *      - WPA/WPA2 IE
 372 *      - 11n TLV
 373 *      - Vendor specific TLV
 374 *      - WMM TLV
 375 *      - WAPI IE
 376 *      - Generic IE
 377 *      - TSF TLV
 378 *
 379 * Preparation also includes -
 380 *      - Setting command ID and proper size
 381 *      - Ensuring correct endian-ness
 382 */
 383int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
 384				 struct host_cmd_ds_command *cmd,
 385				 struct mwifiex_bssdescriptor *bss_desc)
 386{
 387	struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
 388	struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
 389	struct mwifiex_ie_types_phy_param_set *phy_tlv;
 390	struct mwifiex_ie_types_ss_param_set *ss_tlv;
 391	struct mwifiex_ie_types_rates_param_set *rates_tlv;
 392	struct mwifiex_ie_types_auth_type *auth_tlv;
 393	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 394	u8 rates[MWIFIEX_SUPPORTED_RATES];
 395	u32 rates_size;
 396	u16 tmp_cap;
 397	u8 *pos;
 398	int rsn_ie_len = 0;
 399
 400	pos = (u8 *) assoc;
 401
 402	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
 403
 404	/* Save so we know which BSS Desc to use in the response handler */
 405	priv->attempted_bss_desc = bss_desc;
 406
 407	memcpy(assoc->peer_sta_addr,
 408	       bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
 409	pos += sizeof(assoc->peer_sta_addr);
 410
 411	/* Set the listen interval */
 412	assoc->listen_interval = cpu_to_le16(priv->listen_interval);
 413	/* Set the beacon period */
 414	assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
 415
 416	pos += sizeof(assoc->cap_info_bitmap);
 417	pos += sizeof(assoc->listen_interval);
 418	pos += sizeof(assoc->beacon_period);
 419	pos += sizeof(assoc->dtim_period);
 420
 421	ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
 422	ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
 423	ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
 424	memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
 425	       le16_to_cpu(ssid_tlv->header.len));
 426	pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
 427
 428	phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
 429	phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
 430	phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
 431	memcpy(&phy_tlv->fh_ds.ds_param_set,
 432	       &bss_desc->phy_param_set.ds_param_set.current_chan,
 433	       sizeof(phy_tlv->fh_ds.ds_param_set));
 434	pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
 435
 436	ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
 437	ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
 438	ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
 439	pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
 440
 441	/* Get the common rates supported between the driver and the BSS Desc */
 442	if (mwifiex_setup_rates_from_bssdesc
 443	    (priv, bss_desc, rates, &rates_size))
 444		return -1;
 445
 446	/* Save the data rates into Current BSS state structure */
 447	priv->curr_bss_params.num_of_rates = rates_size;
 448	memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
 449
 450	/* Setup the Rates TLV in the association command */
 451	rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
 452	rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
 453	rates_tlv->header.len = cpu_to_le16((u16) rates_size);
 454	memcpy(rates_tlv->rates, rates, rates_size);
 455	pos += sizeof(rates_tlv->header) + rates_size;
 456	dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
 457		rates_size);
 458
 459	/* Add the Authentication type to be used for Auth frames */
 460	auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
 461	auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 462	auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
 463	if (priv->sec_info.wep_enabled)
 464		auth_tlv->auth_type = cpu_to_le16(
 465				(u16) priv->sec_info.authentication_mode);
 466	else
 467		auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
 468
 469	pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
 470
 471	if (IS_SUPPORT_MULTI_BANDS(priv->adapter) &&
 472	    !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
 473	    (!bss_desc->disable_11n) &&
 474	    (priv->adapter->config_bands & BAND_GN ||
 475	     priv->adapter->config_bands & BAND_AN) &&
 476	    (bss_desc->bcn_ht_cap)
 477	    )
 478		) {
 479		/* Append a channel TLV for the channel the attempted AP was
 480		   found on */
 481		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 482		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 483		chan_tlv->header.len =
 484			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 485
 486		memset(chan_tlv->chan_scan_param, 0x00,
 487		       sizeof(struct mwifiex_chan_scan_param_set));
 488		chan_tlv->chan_scan_param[0].chan_number =
 489			(bss_desc->phy_param_set.ds_param_set.current_chan);
 490		dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
 491			chan_tlv->chan_scan_param[0].chan_number);
 492
 493		chan_tlv->chan_scan_param[0].radio_type =
 494			mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 495
 496		dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
 497			chan_tlv->chan_scan_param[0].radio_type);
 498		pos += sizeof(chan_tlv->header) +
 499			sizeof(struct mwifiex_chan_scan_param_set);
 500	}
 501
 502	if (!priv->wps.session_enable) {
 503		if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 504			rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 505
 506		if (rsn_ie_len == -1)
 507			return -1;
 508	}
 509
 510	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
 511	    (!bss_desc->disable_11n) &&
 512	    (priv->adapter->config_bands & BAND_GN ||
 513	     priv->adapter->config_bands & BAND_AN))
 514		mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
 515
 516	if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
 517	    !bss_desc->disable_11n && !bss_desc->disable_11ac &&
 518	    (priv->adapter->config_bands & BAND_GAC ||
 519	     priv->adapter->config_bands & BAND_AAC))
 520		mwifiex_cmd_append_11ac_tlv(priv, bss_desc, &pos);
 521
 522	/* Append vendor specific IE TLV */
 523	mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
 524
 525	mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
 526					    bss_desc->bcn_ht_cap);
 527	if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
 528		mwifiex_cmd_append_wapi_ie(priv, &pos);
 529
 530	if (priv->wps.session_enable && priv->wps_ie_len)
 531		mwifiex_cmd_append_wps_ie(priv, &pos);
 532
 533	mwifiex_cmd_append_generic_ie(priv, &pos);
 534
 535	mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
 536
 537	mwifiex_11h_process_join(priv, &pos, bss_desc);
 538
 539	cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
 540
 541	/* Set the Capability info at last */
 542	tmp_cap = bss_desc->cap_info_bitmap;
 543
 544	if (priv->adapter->config_bands == BAND_B)
 545		tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
 546
 547	tmp_cap &= CAPINFO_MASK;
 548	dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
 549		tmp_cap, CAPINFO_MASK);
 550	assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
 551
 552	return 0;
 553}
 554
 555/*
 556 * Association firmware command response handler
 557 *
 558 * The response buffer for the association command has the following
 559 * memory layout.
 560 *
 561 * For cases where an association response was not received (indicated
 562 * by the CapInfo and AId field):
 563 *
 564 *     .------------------------------------------------------------.
 565 *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 566 *     .------------------------------------------------------------.
 567 *     |  cap_info/Error Return(t_u16):                             |
 568 *     |           0xFFFF(-1): Internal error                       |
 569 *     |           0xFFFE(-2): Authentication unhandled message     |
 570 *     |           0xFFFD(-3): Authentication refused               |
 571 *     |           0xFFFC(-4): Timeout waiting for AP response      |
 572 *     .------------------------------------------------------------.
 573 *     |  status_code(t_u16):                                       |
 574 *     |        If cap_info is -1:                                  |
 575 *     |           An internal firmware failure prevented the       |
 576 *     |           command from being processed.  The status_code   |
 577 *     |           will be set to 1.                                |
 578 *     |                                                            |
 579 *     |        If cap_info is -2:                                  |
 580 *     |           An authentication frame was received but was     |
 581 *     |           not handled by the firmware.  IEEE Status        |
 582 *     |           code for the failure is returned.                |
 583 *     |                                                            |
 584 *     |        If cap_info is -3:                                  |
 585 *     |           An authentication frame was received and the     |
 586 *     |           status_code is the IEEE Status reported in the   |
 587 *     |           response.                                        |
 588 *     |                                                            |
 589 *     |        If cap_info is -4:                                  |
 590 *     |           (1) Association response timeout                 |
 591 *     |           (2) Authentication response timeout              |
 592 *     .------------------------------------------------------------.
 593 *     |  a_id(t_u16): 0xFFFF                                       |
 594 *     .------------------------------------------------------------.
 595 *
 596 *
 597 * For cases where an association response was received, the IEEE
 598 * standard association response frame is returned:
 599 *
 600 *     .------------------------------------------------------------.
 601 *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
 602 *     .------------------------------------------------------------.
 603 *     |  cap_info(t_u16): IEEE Capability                          |
 604 *     .------------------------------------------------------------.
 605 *     |  status_code(t_u16): IEEE Status Code                      |
 606 *     .------------------------------------------------------------.
 607 *     |  a_id(t_u16): IEEE Association ID                          |
 608 *     .------------------------------------------------------------.
 609 *     |  IEEE IEs(variable): Any received IEs comprising the       |
 610 *     |                      remaining portion of a received       |
 611 *     |                      association response frame.           |
 612 *     .------------------------------------------------------------.
 613 *
 614 * For simplistic handling, the status_code field can be used to determine
 615 * an association success (0) or failure (non-zero).
 616 */
 617int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
 618			     struct host_cmd_ds_command *resp)
 619{
 620	struct mwifiex_adapter *adapter = priv->adapter;
 621	int ret = 0;
 622	struct ieee_types_assoc_rsp *assoc_rsp;
 623	struct mwifiex_bssdescriptor *bss_desc;
 624	u8 enable_data = true;
 625	u16 cap_info, status_code;
 626
 627	assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
 628
 629	cap_info = le16_to_cpu(assoc_rsp->cap_info_bitmap);
 630	status_code = le16_to_cpu(assoc_rsp->status_code);
 631
 632	priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
 633				   sizeof(priv->assoc_rsp_buf));
 634
 635	memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
 636
 637	if (status_code) {
 638		priv->adapter->dbg.num_cmd_assoc_failure++;
 639		dev_err(priv->adapter->dev,
 640			"ASSOC_RESP: failed, status code=%d err=%#x a_id=%#x\n",
 641			status_code, cap_info, le16_to_cpu(assoc_rsp->a_id));
 642
 643		if (cap_info == MWIFIEX_TIMEOUT_FOR_AP_RESP) {
 644			if (status_code == MWIFIEX_STATUS_CODE_AUTH_TIMEOUT)
 645				ret = WLAN_STATUS_AUTH_TIMEOUT;
 646			else
 647				ret = WLAN_STATUS_UNSPECIFIED_FAILURE;
 648		} else {
 649			ret = status_code;
 650		}
 651
 652		goto done;
 653	}
 654
 655	/* Send a Media Connected event, according to the Spec */
 656	priv->media_connected = true;
 657
 658	priv->adapter->ps_state = PS_STATE_AWAKE;
 659	priv->adapter->pps_uapsd_mode = false;
 660	priv->adapter->tx_lock_flag = false;
 661
 662	/* Set the attempted BSSID Index to current */
 663	bss_desc = priv->attempted_bss_desc;
 664
 665	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
 666		bss_desc->ssid.ssid);
 667
 668	/* Make a copy of current BSSID descriptor */
 669	memcpy(&priv->curr_bss_params.bss_descriptor,
 670	       bss_desc, sizeof(struct mwifiex_bssdescriptor));
 671
 672	/* Update curr_bss_params */
 673	priv->curr_bss_params.bss_descriptor.channel
 674		= bss_desc->phy_param_set.ds_param_set.current_chan;
 675
 676	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
 677
 678	if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
 679		priv->curr_bss_params.wmm_enabled = true;
 680	else
 681		priv->curr_bss_params.wmm_enabled = false;
 682
 683	if ((priv->wmm_required || bss_desc->bcn_ht_cap) &&
 684	    priv->curr_bss_params.wmm_enabled)
 685		priv->wmm_enabled = true;
 686	else
 687		priv->wmm_enabled = false;
 688
 689	priv->curr_bss_params.wmm_uapsd_enabled = false;
 690
 691	if (priv->wmm_enabled)
 692		priv->curr_bss_params.wmm_uapsd_enabled
 693			= ((bss_desc->wmm_ie.qos_info_bitmap &
 694				IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
 695
 696	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
 697		priv->curr_pkt_filter);
 698	if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 699		priv->wpa_is_gtk_set = false;
 700
 701	if (priv->wmm_enabled) {
 702		/* Don't re-enable carrier until we get the WMM_GET_STATUS
 703		   event */
 704		enable_data = false;
 705	} else {
 706		/* Since WMM is not enabled, setup the queues with the
 707		   defaults */
 708		mwifiex_wmm_setup_queue_priorities(priv, NULL);
 709		mwifiex_wmm_setup_ac_downgrade(priv);
 710	}
 711
 712	if (enable_data)
 713		dev_dbg(priv->adapter->dev,
 714			"info: post association, re-enabling data flow\n");
 715
 716	/* Reset SNR/NF/RSSI values */
 717	priv->data_rssi_last = 0;
 718	priv->data_nf_last = 0;
 719	priv->data_rssi_avg = 0;
 720	priv->data_nf_avg = 0;
 721	priv->bcn_rssi_last = 0;
 722	priv->bcn_nf_last = 0;
 723	priv->bcn_rssi_avg = 0;
 724	priv->bcn_nf_avg = 0;
 725	priv->rxpd_rate = 0;
 726	priv->rxpd_htinfo = 0;
 727
 728	mwifiex_save_curr_bcn(priv);
 729
 730	priv->adapter->dbg.num_cmd_assoc_success++;
 731
 732	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
 733
 734	/* Add the ra_list here for infra mode as there will be only 1 ra
 735	   always */
 736	mwifiex_ralist_add(priv,
 737			   priv->curr_bss_params.bss_descriptor.mac_address);
 738
 739	if (!netif_carrier_ok(priv->netdev))
 740		netif_carrier_on(priv->netdev);
 741	mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
 742
 743	if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
 744		priv->scan_block = true;
 745
 746done:
 747	/* Need to indicate IOCTL complete */
 748	if (adapter->curr_cmd->wait_q_enabled) {
 749		if (ret)
 750			adapter->cmd_wait_q.status = -1;
 751		else
 752			adapter->cmd_wait_q.status = 0;
 753	}
 754
 755	return ret;
 756}
 757
 758/*
 759 * This function prepares command for ad-hoc start.
 760 *
 761 * Driver will fill up SSID, BSS mode, IBSS parameters, physical
 762 * parameters, probe delay, and capability information. Firmware
 763 * will fill up beacon period, basic rates and operational rates.
 764 *
 765 * In addition, the following TLVs are added -
 766 *      - Channel TLV
 767 *      - Vendor specific IE
 768 *      - WPA/WPA2 IE
 769 *      - HT Capabilities IE
 770 *      - HT Information IE
 771 *
 772 * Preparation also includes -
 773 *      - Setting command ID and proper size
 774 *      - Ensuring correct endian-ness
 775 */
 776int
 777mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 778				struct host_cmd_ds_command *cmd,
 779				struct cfg80211_ssid *req_ssid)
 780{
 781	int rsn_ie_len = 0;
 782	struct mwifiex_adapter *adapter = priv->adapter;
 783	struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
 784		&cmd->params.adhoc_start;
 785	struct mwifiex_bssdescriptor *bss_desc;
 786	u32 cmd_append_size = 0;
 787	u32 i;
 788	u16 tmp_cap;
 789	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
 790	u8 radio_type;
 791
 792	struct mwifiex_ie_types_htcap *ht_cap;
 793	struct mwifiex_ie_types_htinfo *ht_info;
 794	u8 *pos = (u8 *) adhoc_start +
 795			sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
 796
 797	if (!adapter)
 798		return -1;
 799
 800	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
 801
 802	bss_desc = &priv->curr_bss_params.bss_descriptor;
 803	priv->attempted_bss_desc = bss_desc;
 804
 805	/*
 806	 * Fill in the parameters for 2 data structures:
 807	 *   1. struct host_cmd_ds_802_11_ad_hoc_start command
 808	 *   2. bss_desc
 809	 * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
 810	 * probe delay, and Cap info.
 811	 * Firmware will fill up beacon period, Basic rates
 812	 * and operational rates.
 813	 */
 814
 815	memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
 816
 817	memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
 818
 819	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
 820		adhoc_start->ssid);
 821
 822	memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
 823	memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
 824
 825	bss_desc->ssid.ssid_len = req_ssid->ssid_len;
 826
 827	/* Set the BSS mode */
 828	adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
 829	bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 830	adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
 831	bss_desc->beacon_period = priv->beacon_period;
 832
 833	/* Set Physical param set */
 834/* Parameter IE Id */
 835#define DS_PARA_IE_ID   3
 836/* Parameter IE length */
 837#define DS_PARA_IE_LEN  1
 838
 839	adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
 840	adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
 841
 842	if (!mwifiex_get_cfp(priv, adapter->adhoc_start_band,
 843			     (u16) priv->adhoc_channel, 0)) {
 844		struct mwifiex_chan_freq_power *cfp;
 845		cfp = mwifiex_get_cfp(priv, adapter->adhoc_start_band,
 846				      FIRST_VALID_CHANNEL, 0);
 847		if (cfp)
 848			priv->adhoc_channel = (u8) cfp->channel;
 849	}
 850
 851	if (!priv->adhoc_channel) {
 852		dev_err(adapter->dev, "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
 853		return -1;
 854	}
 855
 856	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
 857		priv->adhoc_channel);
 858
 859	priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
 860	priv->curr_bss_params.band = adapter->adhoc_start_band;
 861
 862	bss_desc->channel = priv->adhoc_channel;
 863	adhoc_start->phy_param_set.ds_param_set.current_chan =
 864		priv->adhoc_channel;
 865
 866	memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
 867	       sizeof(union ieee_types_phy_param_set));
 868
 869	/* Set IBSS param set */
 870/* IBSS parameter IE Id */
 871#define IBSS_PARA_IE_ID   6
 872/* IBSS parameter IE length */
 873#define IBSS_PARA_IE_LEN  2
 874
 875	adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
 876	adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
 877	adhoc_start->ss_param_set.ibss_param_set.atim_window
 878					= cpu_to_le16(priv->atim_window);
 879	memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
 880	       sizeof(union ieee_types_ss_param_set));
 881
 882	/* Set Capability info */
 883	bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
 884	tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
 885	tmp_cap &= ~WLAN_CAPABILITY_ESS;
 886	tmp_cap |= WLAN_CAPABILITY_IBSS;
 887
 888	/* Set up privacy in bss_desc */
 889	if (priv->sec_info.encryption_mode) {
 890		/* Ad-Hoc capability privacy on */
 891		dev_dbg(adapter->dev,
 892			"info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
 893		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 894		tmp_cap |= WLAN_CAPABILITY_PRIVACY;
 895	} else {
 896		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: wep_status NOT set,"
 897				" setting privacy to ACCEPT ALL\n");
 898		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 899	}
 900
 901	memset(adhoc_start->data_rate, 0, sizeof(adhoc_start->data_rate));
 902	mwifiex_get_active_data_rates(priv, adhoc_start->data_rate);
 903	if ((adapter->adhoc_start_band & BAND_G) &&
 904	    (priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
 905		if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 906					   HostCmd_ACT_GEN_SET, 0,
 907					   &priv->curr_pkt_filter)) {
 908			dev_err(adapter->dev,
 909				"ADHOC_S_CMD: G Protection config failed\n");
 910			return -1;
 911		}
 912	}
 913	/* Find the last non zero */
 914	for (i = 0; i < sizeof(adhoc_start->data_rate); i++)
 915		if (!adhoc_start->data_rate[i])
 916			break;
 917
 918	priv->curr_bss_params.num_of_rates = i;
 919
 920	/* Copy the ad-hoc creating rates into Current BSS rate structure */
 921	memcpy(&priv->curr_bss_params.data_rates,
 922	       &adhoc_start->data_rate, priv->curr_bss_params.num_of_rates);
 923
 924	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%4ph\n",
 925		adhoc_start->data_rate);
 926
 927	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
 928
 929	if (IS_SUPPORT_MULTI_BANDS(adapter)) {
 930		/* Append a channel TLV */
 931		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
 932		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 933		chan_tlv->header.len =
 934			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
 935
 936		memset(chan_tlv->chan_scan_param, 0x00,
 937		       sizeof(struct mwifiex_chan_scan_param_set));
 938		chan_tlv->chan_scan_param[0].chan_number =
 939			(u8) priv->curr_bss_params.bss_descriptor.channel;
 940
 941		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
 942			chan_tlv->chan_scan_param[0].chan_number);
 943
 944		chan_tlv->chan_scan_param[0].radio_type
 945		       = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 946		if (adapter->adhoc_start_band & BAND_GN ||
 947		    adapter->adhoc_start_band & BAND_AN) {
 948			if (adapter->sec_chan_offset ==
 949					    IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 950				chan_tlv->chan_scan_param[0].radio_type |=
 951					(IEEE80211_HT_PARAM_CHA_SEC_ABOVE << 4);
 952			else if (adapter->sec_chan_offset ==
 953					    IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
 954				chan_tlv->chan_scan_param[0].radio_type |=
 955					(IEEE80211_HT_PARAM_CHA_SEC_BELOW << 4);
 956		}
 957		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
 958			chan_tlv->chan_scan_param[0].radio_type);
 959		pos += sizeof(chan_tlv->header) +
 960			sizeof(struct mwifiex_chan_scan_param_set);
 961		cmd_append_size +=
 962			sizeof(chan_tlv->header) +
 963			sizeof(struct mwifiex_chan_scan_param_set);
 964	}
 965
 966	/* Append vendor specific IE TLV */
 967	cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
 968				MWIFIEX_VSIE_MASK_ADHOC, &pos);
 969
 970	if (priv->sec_info.wpa_enabled) {
 971		rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
 972		if (rsn_ie_len == -1)
 973			return -1;
 974		cmd_append_size += rsn_ie_len;
 975	}
 976
 977	if (adapter->adhoc_11n_enabled) {
 978		/* Fill HT CAPABILITY */
 979		ht_cap = (struct mwifiex_ie_types_htcap *) pos;
 980		memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
 981		ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 982		ht_cap->header.len =
 983		       cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 984		radio_type = mwifiex_band_to_radio_type(
 985					priv->adapter->config_bands);
 986		mwifiex_fill_cap_info(priv, radio_type, ht_cap);
 987
 988		if (adapter->sec_chan_offset ==
 989					IEEE80211_HT_PARAM_CHA_SEC_NONE) {
 990			u16 tmp_ht_cap;
 991
 992			tmp_ht_cap = le16_to_cpu(ht_cap->ht_cap.cap_info);
 993			tmp_ht_cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 994			tmp_ht_cap &= ~IEEE80211_HT_CAP_SGI_40;
 995			ht_cap->ht_cap.cap_info = cpu_to_le16(tmp_ht_cap);
 996		}
 997
 998		pos += sizeof(struct mwifiex_ie_types_htcap);
 999		cmd_append_size += sizeof(struct mwifiex_ie_types_htcap);
1000
1001		/* Fill HT INFORMATION */
1002		ht_info = (struct mwifiex_ie_types_htinfo *) pos;
1003		memset(ht_info, 0, sizeof(struct mwifiex_ie_types_htinfo));
1004		ht_info->header.type = cpu_to_le16(WLAN_EID_HT_OPERATION);
1005		ht_info->header.len =
1006			cpu_to_le16(sizeof(struct ieee80211_ht_operation));
1007
1008		ht_info->ht_oper.primary_chan =
1009			(u8) priv->curr_bss_params.bss_descriptor.channel;
1010		if (adapter->sec_chan_offset) {
1011			ht_info->ht_oper.ht_param = adapter->sec_chan_offset;
1012			ht_info->ht_oper.ht_param |=
1013					IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
1014		}
1015		ht_info->ht_oper.operation_mode =
1016		     cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
1017		ht_info->ht_oper.basic_set[0] = 0xff;
1018		pos += sizeof(struct mwifiex_ie_types_htinfo);
1019		cmd_append_size +=
1020				sizeof(struct mwifiex_ie_types_htinfo);
1021	}
1022
1023	cmd->size =
1024		cpu_to_le16((u16)(sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
1025				  + S_DS_GEN + cmd_append_size));
1026
1027	if (adapter->adhoc_start_band == BAND_B)
1028		tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
1029	else
1030		tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
1031
1032	adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
1033
1034	return 0;
1035}
1036
1037/*
1038 * This function prepares command for ad-hoc join.
1039 *
1040 * Most of the parameters are set up by copying from the target BSS descriptor
1041 * from the scan response.
1042 *
1043 * In addition, the following TLVs are added -
1044 *      - Channel TLV
1045 *      - Vendor specific IE
1046 *      - WPA/WPA2 IE
1047 *      - 11n IE
1048 *
1049 * Preparation also includes -
1050 *      - Setting command ID and proper size
1051 *      - Ensuring correct endian-ness
1052 */
1053int
1054mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
1055			       struct host_cmd_ds_command *cmd,
1056			       struct mwifiex_bssdescriptor *bss_desc)
1057{
1058	int rsn_ie_len = 0;
1059	struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
1060		&cmd->params.adhoc_join;
1061	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
1062	u32 cmd_append_size = 0;
1063	u16 tmp_cap;
1064	u32 i, rates_size = 0;
1065	u16 curr_pkt_filter;
1066	u8 *pos =
1067		(u8 *) adhoc_join +
1068		sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
1069
1070/* Use G protection */
1071#define USE_G_PROTECTION        0x02
1072	if (bss_desc->erp_flags & USE_G_PROTECTION) {
1073		curr_pkt_filter =
1074			priv->
1075			curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
1076
1077		if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
1078					   HostCmd_ACT_GEN_SET, 0,
1079					   &curr_pkt_filter)) {
1080			dev_err(priv->adapter->dev,
1081				"ADHOC_J_CMD: G Protection config failed\n");
1082			return -1;
1083		}
1084	}
1085
1086	priv->attempted_bss_desc = bss_desc;
1087
1088	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
1089
1090	adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
1091
1092	adhoc_join->bss_descriptor.beacon_period
1093		= cpu_to_le16(bss_desc->beacon_period);
1094
1095	memcpy(&adhoc_join->bss_descriptor.bssid,
1096	       &bss_desc->mac_address, ETH_ALEN);
1097
1098	memcpy(&adhoc_join->bss_descriptor.ssid,
1099	       &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
1100
1101	memcpy(&adhoc_join->bss_descriptor.phy_param_set,
1102	       &bss_desc->phy_param_set,
1103	       sizeof(union ieee_types_phy_param_set));
1104
1105	memcpy(&adhoc_join->bss_descriptor.ss_param_set,
1106	       &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
1107
1108	tmp_cap = bss_desc->cap_info_bitmap;
1109
1110	tmp_cap &= CAPINFO_MASK;
1111
1112	dev_dbg(priv->adapter->dev,
1113		"info: ADHOC_J_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
1114		tmp_cap, CAPINFO_MASK);
1115
1116	/* Information on BSSID descriptor passed to FW */
1117	dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID=%pM, SSID='%s'\n",
1118		adhoc_join->bss_descriptor.bssid,
1119		adhoc_join->bss_descriptor.ssid);
1120
1121	for (i = 0; i < MWIFIEX_SUPPORTED_RATES &&
1122		    bss_desc->supported_rates[i]; i++)
1123		;
1124	rates_size = i;
1125
1126	/* Copy Data Rates from the Rates recorded in scan response */
1127	memset(adhoc_join->bss_descriptor.data_rates, 0,
1128	       sizeof(adhoc_join->bss_descriptor.data_rates));
1129	memcpy(adhoc_join->bss_descriptor.data_rates,
1130	       bss_desc->supported_rates, rates_size);
1131
1132	/* Copy the adhoc join rates into Current BSS state structure */
1133	priv->curr_bss_params.num_of_rates = rates_size;
1134	memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
1135	       rates_size);
1136
1137	/* Copy the channel information */
1138	priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
1139	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
1140
1141	if (priv->sec_info.wep_enabled || priv->sec_info.wpa_enabled)
1142		tmp_cap |= WLAN_CAPABILITY_PRIVACY;
1143
1144	if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
1145		/* Append a channel TLV */
1146		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
1147		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
1148		chan_tlv->header.len =
1149			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
1150
1151		memset(chan_tlv->chan_scan_param, 0x00,
1152		       sizeof(struct mwifiex_chan_scan_param_set));
1153		chan_tlv->chan_scan_param[0].chan_number =
1154			(bss_desc->phy_param_set.ds_param_set.current_chan);
1155		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan=%d\n",
1156			chan_tlv->chan_scan_param[0].chan_number);
1157
1158		chan_tlv->chan_scan_param[0].radio_type =
1159			mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
1160
1161		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band=%d\n",
1162			chan_tlv->chan_scan_param[0].radio_type);
1163		pos += sizeof(chan_tlv->header) +
1164				sizeof(struct mwifiex_chan_scan_param_set);
1165		cmd_append_size += sizeof(chan_tlv->header) +
1166				sizeof(struct mwifiex_chan_scan_param_set);
1167	}
1168
1169	if (priv->sec_info.wpa_enabled)
1170		rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1171	if (rsn_ie_len == -1)
1172		return -1;
1173	cmd_append_size += rsn_ie_len;
1174
1175	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
1176		cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
1177			bss_desc, &pos);
1178
1179	/* Append vendor specific IE TLV */
1180	cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1181			MWIFIEX_VSIE_MASK_ADHOC, &pos);
1182
1183	cmd->size = cpu_to_le16
1184		((u16) (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
1185			+ S_DS_GEN + cmd_append_size));
1186
1187	adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
1188
1189	return 0;
1190}
1191
1192/*
1193 * This function handles the command response of ad-hoc start and
1194 * ad-hoc join.
1195 *
1196 * The function generates a device-connected event to notify
1197 * the applications, in case of successful ad-hoc start/join, and
1198 * saves the beacon buffer.
1199 */
1200int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
1201			      struct host_cmd_ds_command *resp)
1202{
1203	int ret = 0;
1204	struct mwifiex_adapter *adapter = priv->adapter;
1205	struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
1206	struct mwifiex_bssdescriptor *bss_desc;
1207	u16 reason_code;
1208
1209	adhoc_result = &resp->params.adhoc_result;
1210
1211	bss_desc = priv->attempted_bss_desc;
1212
1213	/* Join result code 0 --> SUCCESS */
1214	reason_code = le16_to_cpu(resp->result);
1215	if (reason_code) {
1216		dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
1217		if (priv->media_connected)
1218			mwifiex_reset_connect_state(priv, reason_code);
1219
1220		memset(&priv->curr_bss_params.bss_descriptor,
1221		       0x00, sizeof(struct mwifiex_bssdescriptor));
1222
1223		ret = -1;
1224		goto done;
1225	}
1226
1227	/* Send a Media Connected event, according to the Spec */
1228	priv->media_connected = true;
1229
1230	if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
1231		dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
1232			bss_desc->ssid.ssid);
1233
1234		/* Update the created network descriptor with the new BSSID */
1235		memcpy(bss_desc->mac_address,
1236		       adhoc_result->bssid, ETH_ALEN);
1237
1238		priv->adhoc_state = ADHOC_STARTED;
1239	} else {
1240		/*
1241		 * Now the join cmd should be successful.
1242		 * If BSSID has changed use SSID to compare instead of BSSID
1243		 */
1244		dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
1245			bss_desc->ssid.ssid);
1246
1247		/*
1248		 * Make a copy of current BSSID descriptor, only needed for
1249		 * join since the current descriptor is already being used
1250		 * for adhoc start
1251		 */
1252		memcpy(&priv->curr_bss_params.bss_descriptor,
1253		       bss_desc, sizeof(struct mwifiex_bssdescriptor));
1254
1255		priv->adhoc_state = ADHOC_JOINED;
1256	}
1257
1258	dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
1259		priv->adhoc_channel);
1260	dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
1261		priv->curr_bss_params.bss_descriptor.mac_address);
1262
1263	if (!netif_carrier_ok(priv->netdev))
1264		netif_carrier_on(priv->netdev);
1265	mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
1266
1267	mwifiex_save_curr_bcn(priv);
1268
1269done:
1270	/* Need to indicate IOCTL complete */
1271	if (adapter->curr_cmd->wait_q_enabled) {
1272		if (ret)
1273			adapter->cmd_wait_q.status = -1;
1274		else
1275			adapter->cmd_wait_q.status = 0;
1276
1277	}
1278
1279	return ret;
1280}
1281
1282/*
1283 * This function associates to a specific BSS discovered in a scan.
1284 *
1285 * It clears any past association response stored for application
1286 * retrieval and calls the command preparation routine to send the
1287 * command to firmware.
1288 */
1289int mwifiex_associate(struct mwifiex_private *priv,
1290		      struct mwifiex_bssdescriptor *bss_desc)
1291{
1292	u8 current_bssid[ETH_ALEN];
1293
1294	/* Return error if the adapter is not STA role or table entry
1295	 * is not marked as infra.
1296	 */
1297	if ((GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA) ||
1298	    (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
1299		return -1;
1300
1301	if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
1302	    !bss_desc->disable_11n && !bss_desc->disable_11ac &&
1303	    (priv->adapter->config_bands & BAND_GAC ||
1304	     priv->adapter->config_bands & BAND_AAC))
1305		mwifiex_set_11ac_ba_params(priv);
1306	else
1307		mwifiex_set_ba_params(priv);
1308
1309	memcpy(&current_bssid,
1310	       &priv->curr_bss_params.bss_descriptor.mac_address,
1311	       sizeof(current_bssid));
1312
1313	/* Clear any past association response stored for application
1314	   retrieval */
1315	priv->assoc_rsp_size = 0;
1316
1317	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
1318				    HostCmd_ACT_GEN_SET, 0, bss_desc);
1319}
1320
1321/*
1322 * This function starts an ad-hoc network.
1323 *
1324 * It calls the command preparation routine to send the command to firmware.
1325 */
1326int
1327mwifiex_adhoc_start(struct mwifiex_private *priv,
1328		    struct cfg80211_ssid *adhoc_ssid)
1329{
1330	dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
1331		priv->adhoc_channel);
1332	dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1333		priv->curr_bss_params.bss_descriptor.channel);
1334	dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
1335		priv->curr_bss_params.band);
1336
1337	if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
1338	    (priv->adapter->config_bands & BAND_GAC ||
1339	     priv->adapter->config_bands & BAND_AAC))
1340		mwifiex_set_11ac_ba_params(priv);
1341	else
1342		mwifiex_set_ba_params(priv);
1343
1344	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
1345				    HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
1346}
1347
1348/*
1349 * This function joins an ad-hoc network found in a previous scan.
1350 *
1351 * It calls the command preparation routine to send the command to firmware,
1352 * if already not connected to the requested SSID.
1353 */
1354int mwifiex_adhoc_join(struct mwifiex_private *priv,
1355		       struct mwifiex_bssdescriptor *bss_desc)
1356{
1357	dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
1358		priv->curr_bss_params.bss_descriptor.ssid.ssid);
1359	dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
1360		priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
1361	dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
1362		bss_desc->ssid.ssid);
1363	dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
1364		bss_desc->ssid.ssid_len);
1365
1366	/* Check if the requested SSID is already joined */
1367	if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
1368	    !mwifiex_ssid_cmp(&bss_desc->ssid,
1369			      &priv->curr_bss_params.bss_descriptor.ssid) &&
1370	    (priv->curr_bss_params.bss_descriptor.bss_mode ==
1371							NL80211_IFTYPE_ADHOC)) {
1372		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
1373			" is the same as current; not attempting to re-join\n");
1374		return -1;
1375	}
1376
1377	if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
1378	    !bss_desc->disable_11n && !bss_desc->disable_11ac &&
1379	    (priv->adapter->config_bands & BAND_GAC ||
1380	     priv->adapter->config_bands & BAND_AAC))
1381		mwifiex_set_11ac_ba_params(priv);
1382	else
1383		mwifiex_set_ba_params(priv);
1384
1385	dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
1386		priv->curr_bss_params.bss_descriptor.channel);
1387	dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
1388		priv->curr_bss_params.band);
1389
1390	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
1391				    HostCmd_ACT_GEN_SET, 0, bss_desc);
1392}
1393
1394/*
1395 * This function deauthenticates/disconnects from infra network by sending
1396 * deauthentication request.
1397 */
1398static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
1399{
1400	u8 mac_address[ETH_ALEN];
1401	int ret;
1402
1403	if (!mac || is_zero_ether_addr(mac))
1404		memcpy(mac_address,
1405		       priv->curr_bss_params.bss_descriptor.mac_address,
1406		       ETH_ALEN);
1407	else
1408		memcpy(mac_address, mac, ETH_ALEN);
1409
1410	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1411				    HostCmd_ACT_GEN_SET, 0, mac_address);
1412
1413	return ret;
1414}
1415
1416/*
1417 * This function deauthenticates/disconnects from a BSS.
1418 *
1419 * In case of infra made, it sends deauthentication request, and
1420 * in case of ad-hoc mode, a stop network request is sent to the firmware.
1421 * In AP mode, a command to stop bss is sent to firmware.
1422 */
1423int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
1424{
1425	int ret = 0;
1426
1427	if (!priv->media_connected)
1428		return 0;
1429
1430	switch (priv->bss_mode) {
1431	case NL80211_IFTYPE_STATION:
1432	case NL80211_IFTYPE_P2P_CLIENT:
1433		ret = mwifiex_deauthenticate_infra(priv, mac);
1434		if (ret)
1435			cfg80211_disconnected(priv->netdev, 0, NULL, 0,
1436					      GFP_KERNEL);
1437		break;
1438	case NL80211_IFTYPE_ADHOC:
1439		return mwifiex_send_cmd_sync(priv,
1440					     HostCmd_CMD_802_11_AD_HOC_STOP,
1441					     HostCmd_ACT_GEN_SET, 0, NULL);
1442	case NL80211_IFTYPE_AP:
1443		return mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1444					     HostCmd_ACT_GEN_SET, 0, NULL);
1445	default:
1446		break;
1447	}
1448
1449	return ret;
1450}
1451EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
1452
1453/*
1454 * This function converts band to radio type used in channel TLV.
1455 */
1456u8
1457mwifiex_band_to_radio_type(u8 band)
1458{
1459	switch (band) {
1460	case BAND_A:
1461	case BAND_AN:
1462	case BAND_A | BAND_AN:
1463	case BAND_A | BAND_AN | BAND_AAC:
1464		return HostCmd_SCAN_RADIO_TYPE_A;
1465	case BAND_B:
1466	case BAND_G:
1467	case BAND_B | BAND_G:
1468	default:
1469		return HostCmd_SCAN_RADIO_TYPE_BG;
1470	}
1471}