[deliverable/linux.git] / drivers / staging / rtl8712 / ieee80211.c

/******************************************************************************
 * ieee80211.c
 *
 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
 * Linux device driver for RTL8192SU
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * Modifications for inclusion into the Linux staging tree are
 * Copyright(c) 2010 Larry Finger. All rights reserved.
 *
 * Contact information:
 * WLAN FAE <wlanfae@realtek.com>.
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 ******************************************************************************/

#define _IEEE80211_C

#include "drv_types.h"
#include "ieee80211.h"
#include "wifi.h"
#include "osdep_service.h"
#include "wlan_bssdef.h"

static const u8 WPA_OUI_TYPE[] = {0x00, 0x50, 0xf2, 1};
static const u8 WPA_CIPHER_SUITE_NONE[] = {0x00, 0x50, 0xf2, 0};
static const u8 WPA_CIPHER_SUITE_WEP40[] = {0x00, 0x50, 0xf2, 1};
static const u8 WPA_CIPHER_SUITE_TKIP[] = {0x00, 0x50, 0xf2, 2};
static const u8 WPA_CIPHER_SUITE_CCMP[] = {0x00, 0x50, 0xf2, 4};
static const u8 WPA_CIPHER_SUITE_WEP104[] = {0x00, 0x50, 0xf2, 5};

static const u8 RSN_CIPHER_SUITE_NONE[] = {0x00, 0x0f, 0xac, 0};
static const u8 RSN_CIPHER_SUITE_WEP40[] = {0x00, 0x0f, 0xac, 1};
static const u8 RSN_CIPHER_SUITE_TKIP[] = {0x00, 0x0f, 0xac, 2};
static const u8 RSN_CIPHER_SUITE_CCMP[] = {0x00, 0x0f, 0xac, 4};
static const u8 RSN_CIPHER_SUITE_WEP104[] = {0x00, 0x0f, 0xac, 5};

/*-----------------------------------------------------------
 * for adhoc-master to generate ie and provide supported-rate to fw
 *-----------------------------------------------------------
 */

static u8 WIFI_CCKRATES[] =  {
	(IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
	(IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
	(IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
	(IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)
};

static u8 WIFI_OFDMRATES[] = {
	(IEEE80211_OFDM_RATE_6MB),
	(IEEE80211_OFDM_RATE_9MB),
	(IEEE80211_OFDM_RATE_12MB),
	(IEEE80211_OFDM_RATE_18MB),
	(IEEE80211_OFDM_RATE_24MB),
	(IEEE80211_OFDM_RATE_36MB),
	(IEEE80211_OFDM_RATE_48MB),
	(IEEE80211_OFDM_RATE_54MB)
};

uint r8712_is_cckrates_included(u8 *rate)
{
	u32 i = 0;

	while (rate[i] != 0) {
		if ((((rate[i]) & 0x7f) == 2) || (((rate[i]) & 0x7f) == 4) ||
		    (((rate[i]) & 0x7f) == 11) || (((rate[i]) & 0x7f) == 22))
			return true;
		i++;
	}
	return false;
}

uint r8712_is_cckratesonly_included(u8 *rate)
{
	u32 i = 0;

	while (rate[i] != 0) {
		if ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
		    (((rate[i]) & 0x7f) != 11)  && (((rate[i]) & 0x7f) != 22))
			return false;
		i++;
	}
	return true;
}

/* r8712_set_ie will update frame length */
u8 *r8712_set_ie(u8 *pbuf, sint index, uint len, u8 *source, uint *frlen)
{
	*pbuf = (u8)index;
	*(pbuf + 1) = (u8)len;
	if (len > 0)
		memcpy((void *)(pbuf + 2), (void *)source, len);
	*frlen = *frlen + (len + 2);
	return pbuf + len + 2;
}

/* ---------------------------------------------------------------------------
 * index: the information element id index, limit is the limit for search
 * ---------------------------------------------------------------------------
 */
u8 *r8712_get_ie(u8 *pbuf, sint index, sint *len, sint limit)
{
	sint tmp, i;
	u8 *p;

	if (limit < 1)
		return NULL;
	p = pbuf;
	i = 0;
	*len = 0;
	while (1) {
		if (*p == index) {
			*len = *(p + 1);
			return p;
		}
		tmp = *(p + 1);
		p += (tmp + 2);
		i += (tmp + 2);
		if (i >= limit)
			break;
	}
	return NULL;
}

static void set_supported_rate(u8 *rates, uint mode)
{
	memset(rates, 0, NDIS_802_11_LENGTH_RATES_EX);
	switch (mode) {
	case WIRELESS_11B:
		memcpy(rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
		break;
	case WIRELESS_11G:
	case WIRELESS_11A:
		memcpy(rates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
		break;
	case WIRELESS_11BG:
		memcpy(rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
		memcpy(rates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES,
		       IEEE80211_NUM_OFDM_RATESLEN);
		break;
	}
}

static uint r8712_get_rateset_len(u8 *rateset)
{
	uint i = 0;

	while (1) {
		if ((rateset[i]) == 0)
			break;
		if (i > 12)
			break;
		i++;
	}
	return i;
}

int r8712_generate_ie(struct registry_priv *pregistrypriv)
{
	int sz = 0, rateLen;
	struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
	u8 *ie = pdev_network->IEs;

	/*timestamp will be inserted by hardware*/
	sz += 8;
	ie += sz;
	/*beacon interval : 2bytes*/
	*(u16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);
	sz += 2;
	ie += 2;
	/*capability info*/
	*(u16 *)ie = 0;
	*(u16 *)ie |= cpu_to_le16(cap_IBSS);
	if (pregistrypriv->preamble == PREAMBLE_SHORT)
		*(u16 *)ie |= cpu_to_le16(cap_ShortPremble);
	if (pdev_network->Privacy)
		*(u16 *)ie |= cpu_to_le16(cap_Privacy);
	sz += 2;
	ie += 2;
	/*SSID*/
	ie = r8712_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength,
			  pdev_network->Ssid.Ssid, &sz);
	/*supported rates*/
	set_supported_rate(pdev_network->rates, pregistrypriv->wireless_mode);
	rateLen = r8712_get_rateset_len(pdev_network->rates);
	if (rateLen > 8) {
		ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_, 8,
				  pdev_network->rates, &sz);
		ie = r8712_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8),
				  (pdev_network->rates + 8), &sz);
	} else
		ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_,
				  rateLen, pdev_network->rates, &sz);
	/*DS parameter set*/
	ie = r8712_set_ie(ie, _DSSET_IE_, 1,
			  (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
	/*IBSS Parameter Set*/
	ie = r8712_set_ie(ie, _IBSS_PARA_IE_, 2,
			  (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
	return sz;
}

unsigned char *r8712_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
{
	int len;
	u16 val16;
	unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
	u8 *pbuf = pie;

	while (1) {
		pbuf = r8712_get_ie(pbuf, _WPA_IE_ID_, &len, limit);
		if (pbuf) {
			/*check if oui matches...*/
			if (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type)))
				goto check_next_ie;
			/*check version...*/
			memcpy((u8 *)&val16, (pbuf + 6), sizeof(val16));
			val16 = le16_to_cpu(val16);
			if (val16 != 0x0001)
				goto check_next_ie;
			*wpa_ie_len = *(pbuf + 1);
			return pbuf;
		}
		*wpa_ie_len = 0;
		return NULL;
check_next_ie:
		limit = limit - (pbuf - pie) - 2 - len;
		if (limit <= 0)
			break;
		pbuf += (2 + len);
	}
	*wpa_ie_len = 0;
	return NULL;
}

unsigned char *r8712_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
{
	return r8712_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
}

static int r8712_get_wpa_cipher_suite(u8 *s)
{
	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
		return WPA_CIPHER_NONE;
	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
		return WPA_CIPHER_WEP40;
	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
		return WPA_CIPHER_TKIP;
	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
		return WPA_CIPHER_CCMP;
	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
		return WPA_CIPHER_WEP104;
	return 0;
}

static int r8712_get_wpa2_cipher_suite(u8 *s)
{
	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
		return WPA_CIPHER_NONE;
	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
		return WPA_CIPHER_WEP40;
	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
		return WPA_CIPHER_TKIP;
	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
		return WPA_CIPHER_CCMP;
	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
		return WPA_CIPHER_WEP104;
	return 0;
}

int r8712_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher,
		       int *pairwise_cipher)
{
	int i;
	int left, count;
	u8 *pos;

	if (wpa_ie_len <= 0) {
		/* No WPA IE - fail silently */
		return _FAIL;
	}
	if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie + 1) != (u8)(wpa_ie_len - 2))
	     || (memcmp(wpa_ie + 2, (void *)WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
		return _FAIL;
	pos = wpa_ie;
	pos += 8;
	left = wpa_ie_len - 8;
	/*group_cipher*/
	if (left >= WPA_SELECTOR_LEN) {
		*group_cipher = r8712_get_wpa_cipher_suite(pos);
		pos += WPA_SELECTOR_LEN;
		left -= WPA_SELECTOR_LEN;
	} else if (left > 0) {
		return _FAIL;
	}
	/*pairwise_cipher*/
	if (left >= 2) {
		count = le16_to_cpu(*(u16 *)pos);
		pos += 2;
		left -= 2;
		if (count == 0 || left < count * WPA_SELECTOR_LEN)
			return _FAIL;
		for (i = 0; i < count; i++) {
			*pairwise_cipher |= r8712_get_wpa_cipher_suite(pos);
			pos += WPA_SELECTOR_LEN;
			left -= WPA_SELECTOR_LEN;
		}
	} else if (left == 1) {
		return _FAIL;
	}
	return _SUCCESS;
}

int r8712_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher,
			int *pairwise_cipher)
{
	int i;
	int left, count;
	u8 *pos;

	if (rsn_ie_len <= 0) {
		/* No RSN IE - fail silently */
		return _FAIL;
	}
	if ((*rsn_ie != _WPA2_IE_ID_) ||
	    (*(rsn_ie + 1) != (u8)(rsn_ie_len - 2)))
		return _FAIL;
	pos = rsn_ie;
	pos += 4;
	left = rsn_ie_len - 4;
	/*group_cipher*/
	if (left >= RSN_SELECTOR_LEN) {
		*group_cipher = r8712_get_wpa2_cipher_suite(pos);
		pos += RSN_SELECTOR_LEN;
		left -= RSN_SELECTOR_LEN;
	} else if (left > 0) {
		return _FAIL;
	}
	/*pairwise_cipher*/
	if (left >= 2) {
		count = le16_to_cpu(*(u16 *)pos);
		pos += 2;
		left -= 2;
		if (count == 0 || left < count * RSN_SELECTOR_LEN)
			return _FAIL;
		for (i = 0; i < count; i++) {
			*pairwise_cipher |= r8712_get_wpa2_cipher_suite(pos);
			pos += RSN_SELECTOR_LEN;
			left -= RSN_SELECTOR_LEN;
		}
	} else if (left == 1) {
		return _FAIL;
	}
	return _SUCCESS;
}

int r8712_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len,
		     u8 *wpa_ie, u16 *wpa_len)
{
	u8 authmode;
	u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
	uint cnt;

	/*Search required WPA or WPA2 IE and copy to sec_ie[ ]*/
	cnt = _TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_;
	while (cnt < in_len) {
		authmode = in_ie[cnt];
		if ((authmode == _WPA_IE_ID_) &&
		    (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
			memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
			*wpa_len = in_ie[cnt + 1] + 2;
			cnt += in_ie[cnt + 1] + 2;  /*get next */
		} else {
			if (authmode == _WPA2_IE_ID_) {
				memcpy(rsn_ie, &in_ie[cnt],
				       in_ie[cnt + 1] + 2);
				*rsn_len = in_ie[cnt + 1] + 2;
				cnt += in_ie[cnt + 1] + 2;  /*get next*/
			} else {
				cnt += in_ie[cnt + 1] + 2;   /*get next*/
			}
		}
	}
	return *rsn_len + *wpa_len;
}

int r8712_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
{
	int match;
	uint cnt;
	u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};

	cnt = 12;
	match = false;
	while (cnt < in_len) {
		eid = in_ie[cnt];
		if ((eid == _WPA_IE_ID_) &&
		    (!memcmp(&in_ie[cnt + 2], wps_oui, 4))) {
			memcpy(wps_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
			*wps_ielen = in_ie[cnt + 1] + 2;
			cnt += in_ie[cnt + 1] + 2;
			match = true;
			break;
		}
			cnt += in_ie[cnt + 1] + 2; /* goto next */
	}
	return match;
}
Commit	Line	Data
2865d42c LF	1	/******************************************************************************
	2	* ieee80211.c
	3	*
	4	* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
	5	* Linux device driver for RTL8192SU
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of version 2 of the GNU General Public License as
	9	* published by the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but WITHOUT
	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	14	* more details.
	15	*
2865d42c LF	16	* Modifications for inclusion into the Linux staging tree are
	17	* Copyright(c) 2010 Larry Finger. All rights reserved.
	18	*
	19	* Contact information:
	20	* WLAN FAE <wlanfae@realtek.com>.
	21	* Larry Finger <Larry.Finger@lwfinger.net>
	22	*
	23	******************************************************************************/
	24
	25	#define _IEEE80211_C
	26
	27	#include "drv_types.h"
	28	#include "ieee80211.h"
	29	#include "wifi.h"
	30	#include "osdep_service.h"
	31	#include "wlan_bssdef.h"
	32
	33	static const u8 WPA_OUI_TYPE[] = {0x00, 0x50, 0xf2, 1};
	34	static const u8 WPA_CIPHER_SUITE_NONE[] = {0x00, 0x50, 0xf2, 0};
	35	static const u8 WPA_CIPHER_SUITE_WEP40[] = {0x00, 0x50, 0xf2, 1};
	36	static const u8 WPA_CIPHER_SUITE_TKIP[] = {0x00, 0x50, 0xf2, 2};
	37	static const u8 WPA_CIPHER_SUITE_CCMP[] = {0x00, 0x50, 0xf2, 4};
	38	static const u8 WPA_CIPHER_SUITE_WEP104[] = {0x00, 0x50, 0xf2, 5};
	39
	40	static const u8 RSN_CIPHER_SUITE_NONE[] = {0x00, 0x0f, 0xac, 0};
	41	static const u8 RSN_CIPHER_SUITE_WEP40[] = {0x00, 0x0f, 0xac, 1};
	42	static const u8 RSN_CIPHER_SUITE_TKIP[] = {0x00, 0x0f, 0xac, 2};
	43	static const u8 RSN_CIPHER_SUITE_CCMP[] = {0x00, 0x0f, 0xac, 4};
	44	static const u8 RSN_CIPHER_SUITE_WEP104[] = {0x00, 0x0f, 0xac, 5};
	45
	46	/*-----------------------------------------------------------
	47	* for adhoc-master to generate ie and provide supported-rate to fw
	48	*-----------------------------------------------------------
	49	*/
	50
	51	static u8 WIFI_CCKRATES[] = {
	52	(IEEE80211_CCK_RATE_1MB \| IEEE80211_BASIC_RATE_MASK),
	53	(IEEE80211_CCK_RATE_2MB \| IEEE80211_BASIC_RATE_MASK),
	54	(IEEE80211_CCK_RATE_5MB \| IEEE80211_BASIC_RATE_MASK),
	55	(IEEE80211_CCK_RATE_11MB \| IEEE80211_BASIC_RATE_MASK)
	56	};
	57
	58	static u8 WIFI_OFDMRATES[] = {
	59	(IEEE80211_OFDM_RATE_6MB),
	60	(IEEE80211_OFDM_RATE_9MB),
	61	(IEEE80211_OFDM_RATE_12MB),
	62	(IEEE80211_OFDM_RATE_18MB),
	63	(IEEE80211_OFDM_RATE_24MB),
	64	(IEEE80211_OFDM_RATE_36MB),
	65	(IEEE80211_OFDM_RATE_48MB),
	66	(IEEE80211_OFDM_RATE_54MB)
	67	};
	68
	69	uint r8712_is_cckrates_included(u8 *rate)
	70	{
	71	u32 i = 0;
	72
	73	while (rate[i] != 0) {
	74	if ((((rate[i]) & 0x7f) == 2) \|\| (((rate[i]) & 0x7f) == 4) \|\|
	75	(((rate[i]) & 0x7f) == 11) \|\| (((rate[i]) & 0x7f) == 22))
	76	return true;
879cb0c9 DC	77	i++;
	78	}
	79	return false;
2865d42c LF	80	}
	81
	82	uint r8712_is_cckratesonly_included(u8 *rate)
	83	{
	84	u32 i = 0;
	85
	86	while (rate[i] != 0) {
	87	if ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
	88	(((rate[i]) & 0x7f) != 11) && (((rate[i]) & 0x7f) != 22))
	89	return false;
	90	i++;
	91	}
	92	return true;
	93	}
	94
	95	/* r8712_set_ie will update frame length */
	96	u8 r8712_set_ie(u8 pbuf, sint index, uint len, u8 source, uint frlen)
	97	{
	98	*pbuf = (u8)index;
	99	*(pbuf + 1) = (u8)len;
	100	if (len > 0)
	101	memcpy((void )(pbuf + 2), (void )source, len);
	102	frlen = frlen + (len + 2);
	103	return pbuf + len + 2;
	104	}
	105
4fd8cba1 PV	106	/* ---------------------------------------------------------------------------
	107	* index: the information element id index, limit is the limit for search
	108	* ---------------------------------------------------------------------------
	109	*/
2865d42c LF	110	u8 r8712_get_ie(u8 pbuf, sint index, sint *len, sint limit)
	111	{
	112	sint tmp, i;
	113	u8 *p;
	114
	115	if (limit < 1)
	116	return NULL;
	117	p = pbuf;
	118	i = 0;
	119	*len = 0;
	120	while (1) {
	121	if (*p == index) {
	122	len = (p + 1);
	123	return p;
2865d42c	124	}
e92c3511 NK	125	tmp = *(p + 1);
	126	p += (tmp + 2);
	127	i += (tmp + 2);
2865d42c LF	128	if (i >= limit)
	129	break;
	130	}
	131	return NULL;
	132	}
	133
7fb539ed	134	static void set_supported_rate(u8 *rates, uint mode)
2865d42c	135	{
7fb539ed	136	memset(rates, 0, NDIS_802_11_LENGTH_RATES_EX);
2865d42c LF	137	switch (mode) {
2865d42c LF	138	case WIRELESS_11B:
7fb539ed	139	memcpy(rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
2865d42c LF	140	break;
	141	case WIRELESS_11G:
	142	case WIRELESS_11A:
7fb539ed	143	memcpy(rates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
2865d42c LF	144	break;
2865d42c LF	145	case WIRELESS_11BG:
7fb539ed JC	146	memcpy(rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
7fb539ed JC	147	memcpy(rates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES,
d25f658d	148	IEEE80211_NUM_OFDM_RATESLEN);
2865d42c LF	149	break;
	150	}
	151	}
	152
	153	static uint r8712_get_rateset_len(u8 *rateset)
	154	{
	155	uint i = 0;
	156
	157	while (1) {
	158	if ((rateset[i]) == 0)
	159	break;
	160	if (i > 12)
	161	break;
	162	i++;
	163	}
	164	return i;
	165	}
	166
ee5b1aad	167	int r8712_generate_ie(struct registry_priv *pregistrypriv)
2865d42c LF	168	{
	169	int sz = 0, rateLen;
	170	struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
	171	u8 *ie = pdev_network->IEs;
2865d42c LF	172
	173	/timestamp will be inserted by hardware/
	174	sz += 8;
	175	ie += sz;
	176	/beacon interval : 2bytes/
	177	(u16 )ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);
	178	sz += 2;
	179	ie += 2;
	180	/capability info/
	181	(u16 )ie = 0;
	182	(u16 )ie \|= cpu_to_le16(cap_IBSS);
	183	if (pregistrypriv->preamble == PREAMBLE_SHORT)
	184	(u16 )ie \|= cpu_to_le16(cap_ShortPremble);
	185	if (pdev_network->Privacy)
	186	(u16 )ie \|= cpu_to_le16(cap_Privacy);
	187	sz += 2;
	188	ie += 2;
	189	/SSID/
	190	ie = r8712_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength,
d25f658d	191	pdev_network->Ssid.Ssid, &sz);
2865d42c	192	/supported rates/
7fb539ed JC	193	set_supported_rate(pdev_network->rates, pregistrypriv->wireless_mode);
7fb539ed JC	194	rateLen = r8712_get_rateset_len(pdev_network->rates);
2865d42c LF	195	if (rateLen > 8) {
2865d42c LF	196	ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_, 8,
d25f658d	197	pdev_network->rates, &sz);
2865d42c	198	ie = r8712_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8),
d25f658d	199	(pdev_network->rates + 8), &sz);
2865d42c LF	200	} else
2865d42c LF	201	ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_,
d25f658d	202	rateLen, pdev_network->rates, &sz);
2865d42c LF	203	/DS parameter set/
2865d42c LF	204	ie = r8712_set_ie(ie, _DSSET_IE_, 1,
d25f658d	205	(u8 *)&(pdev_network->Configuration.DSConfig), &sz);
2865d42c LF	206	/IBSS Parameter Set/
2865d42c LF	207	ie = r8712_set_ie(ie, _IBSS_PARA_IE_, 2,
d25f658d	208	(u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
2865d42c LF	209	return sz;
	210	}
	211
	212	unsigned char r8712_get_wpa_ie(unsigned char pie, int *wpa_ie_len, int limit)
	213	{
	214	int len;
	215	u16 val16;
	216	unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
	217	u8 *pbuf = pie;
	218
	219	while (1) {
	220	pbuf = r8712_get_ie(pbuf, _WPA_IE_ID_, &len, limit);
	221	if (pbuf) {
	222	/check if oui matches.../
d25f658d	223	if (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type)))
2865d42c LF	224	goto check_next_ie;
	225	/check version.../
	226	memcpy((u8 *)&val16, (pbuf + 6), sizeof(val16));
	227	val16 = le16_to_cpu(val16);
	228	if (val16 != 0x0001)
	229	goto check_next_ie;
	230	wpa_ie_len = (pbuf + 1);
	231	return pbuf;
2865d42c	232	}
e92c3511 NK	233	*wpa_ie_len = 0;
e92c3511 NK	234	return NULL;
2865d42c LF	235	check_next_ie:
	236	limit = limit - (pbuf - pie) - 2 - len;
	237	if (limit <= 0)
	238	break;
	239	pbuf += (2 + len);
	240	}
	241	*wpa_ie_len = 0;
	242	return NULL;
	243	}
	244
	245	unsigned char r8712_get_wpa2_ie(unsigned char pie, int *rsn_ie_len, int limit)
	246	{
	247	return r8712_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
	248	}
	249
	250	static int r8712_get_wpa_cipher_suite(u8 *s)
	251	{
	252	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
	253	return WPA_CIPHER_NONE;
	254	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
	255	return WPA_CIPHER_WEP40;
	256	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
	257	return WPA_CIPHER_TKIP;
	258	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
	259	return WPA_CIPHER_CCMP;
	260	if (!memcmp(s, (void *)WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
	261	return WPA_CIPHER_WEP104;
	262	return 0;
	263	}
	264
	265	static int r8712_get_wpa2_cipher_suite(u8 *s)
	266	{
	267	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
	268	return WPA_CIPHER_NONE;
	269	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
	270	return WPA_CIPHER_WEP40;
	271	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
	272	return WPA_CIPHER_TKIP;
	273	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
	274	return WPA_CIPHER_CCMP;
	275	if (!memcmp(s, (void *)RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
	276	return WPA_CIPHER_WEP104;
	277	return 0;
	278	}
	279
	280	int r8712_parse_wpa_ie(u8 wpa_ie, int wpa_ie_len, int group_cipher,
d25f658d	281	int *pairwise_cipher)
2865d42c	282	{
8ffca9ea	283	int i;
2865d42c LF	284	int left, count;
	285	u8 *pos;
	286
	287	if (wpa_ie_len <= 0) {
	288	/* No WPA IE - fail silently */
	289	return _FAIL;
	290	}
	291	if ((wpa_ie != _WPA_IE_ID_) \|\| ((wpa_ie + 1) != (u8)(wpa_ie_len - 2))
	292	\|\| (memcmp(wpa_ie + 2, (void *)WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
	293	return _FAIL;
	294	pos = wpa_ie;
	295	pos += 8;
	296	left = wpa_ie_len - 8;
	297	/group_cipher/
	298	if (left >= WPA_SELECTOR_LEN) {
	299	*group_cipher = r8712_get_wpa_cipher_suite(pos);
	300	pos += WPA_SELECTOR_LEN;
	301	left -= WPA_SELECTOR_LEN;
168a2c10	302	} else if (left > 0) {
2865d42c	303	return _FAIL;
168a2c10	304	}
2865d42c LF	305	/pairwise_cipher/
	306	if (left >= 2) {
	307	count = le16_to_cpu((u16 )pos);
	308	pos += 2;
	309	left -= 2;
	310	if (count == 0 \|\| left < count * WPA_SELECTOR_LEN)
	311	return _FAIL;
	312	for (i = 0; i < count; i++) {
	313	*pairwise_cipher \|= r8712_get_wpa_cipher_suite(pos);
	314	pos += WPA_SELECTOR_LEN;
	315	left -= WPA_SELECTOR_LEN;
	316	}
168a2c10	317	} else if (left == 1) {
2865d42c	318	return _FAIL;
168a2c10	319	}
8ffca9ea	320	return _SUCCESS;
2865d42c LF	321	}
	322
	323	int r8712_parse_wpa2_ie(u8 rsn_ie, int rsn_ie_len, int group_cipher,
d25f658d	324	int *pairwise_cipher)
2865d42c	325	{
8ffca9ea	326	int i;
2865d42c LF	327	int left, count;
	328	u8 *pos;
	329
	330	if (rsn_ie_len <= 0) {
	331	/* No RSN IE - fail silently */
	332	return _FAIL;
	333	}
4ef2de5a LB	334	if ((*rsn_ie != _WPA2_IE_ID_) \|\|
4ef2de5a LB	335	(*(rsn_ie + 1) != (u8)(rsn_ie_len - 2)))
2865d42c LF	336	return _FAIL;
	337	pos = rsn_ie;
	338	pos += 4;
	339	left = rsn_ie_len - 4;
	340	/group_cipher/
	341	if (left >= RSN_SELECTOR_LEN) {
	342	*group_cipher = r8712_get_wpa2_cipher_suite(pos);
	343	pos += RSN_SELECTOR_LEN;
	344	left -= RSN_SELECTOR_LEN;
168a2c10	345	} else if (left > 0) {
2865d42c	346	return _FAIL;
168a2c10	347	}
2865d42c LF	348	/pairwise_cipher/
	349	if (left >= 2) {
	350	count = le16_to_cpu((u16 )pos);
	351	pos += 2;
	352	left -= 2;
	353	if (count == 0 \|\| left < count * RSN_SELECTOR_LEN)
	354	return _FAIL;
	355	for (i = 0; i < count; i++) {
	356	*pairwise_cipher \|= r8712_get_wpa2_cipher_suite(pos);
	357	pos += RSN_SELECTOR_LEN;
	358	left -= RSN_SELECTOR_LEN;
	359	}
168a2c10	360	} else if (left == 1) {
2865d42c	361	return _FAIL;
168a2c10	362	}
8ffca9ea	363	return _SUCCESS;
2865d42c LF	364	}
	365
	366	int r8712_get_sec_ie(u8 in_ie, uint in_len, u8 rsn_ie, u16 *rsn_len,
d25f658d	367	u8 wpa_ie, u16 wpa_len)
2865d42c	368	{
e29d3ebc	369	u8 authmode;
2865d42c LF	370	u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
	371	uint cnt;
	372
	373	/Search required WPA or WPA2 IE and copy to sec_ie[ ]/
bb106dc0	374	cnt = _TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_;
2865d42c LF	375	while (cnt < in_len) {
	376	authmode = in_ie[cnt];
	377	if ((authmode == _WPA_IE_ID_) &&
	378	(!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
	379	memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
4ef2de5a	380	*wpa_len = in_ie[cnt + 1] + 2;
2865d42c LF	381	cnt += in_ie[cnt + 1] + 2; /get next /
	382	} else {
	383	if (authmode == _WPA2_IE_ID_) {
	384	memcpy(rsn_ie, &in_ie[cnt],
d25f658d	385	in_ie[cnt + 1] + 2);
4ef2de5a LB	386	*rsn_len = in_ie[cnt + 1] + 2;
4ef2de5a LB	387	cnt += in_ie[cnt + 1] + 2; /get next/
168a2c10	388	} else {
4ef2de5a	389	cnt += in_ie[cnt + 1] + 2; /get next/
168a2c10	390	}
2865d42c LF	391	}
	392	}
	393	return rsn_len + wpa_len;
	394	}
	395
	396	int r8712_get_wps_ie(u8 in_ie, uint in_len, u8 wps_ie, uint *wps_ielen)
	397	{
	398	int match;
	399	uint cnt;
	400	u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
	401
	402	cnt = 12;
	403	match = false;
	404	while (cnt < in_len) {
	405	eid = in_ie[cnt];
	406	if ((eid == _WPA_IE_ID_) &&
4ef2de5a LB	407	(!memcmp(&in_ie[cnt + 2], wps_oui, 4))) {
	408	memcpy(wps_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
	409	*wps_ielen = in_ie[cnt + 1] + 2;
	410	cnt += in_ie[cnt + 1] + 2;
2865d42c LF	411	match = true;
2865d42c LF	412	break;
e92c3511	413	}
4ef2de5a	414	cnt += in_ie[cnt + 1] + 2; /* goto next */
2865d42c LF	415	}
	416	return match;
	417	}