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rtl8188eu/core/rtw_ieee80211.c
Larry Finger 19db43ecbd rtl8188eu: Backport kernel version 
This driver was added to the kernel with version 3.12. The changes in that
version are now brought back to the GitHub repo. Essentually all of the code
is updated.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
2013-10-19 12:45:47 -05:00

1640 lines
43 KiB
C
Raw Blame History

/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
* 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.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
*
******************************************************************************/
#define _IEEE80211_C
#include <drv_types.h>
#include <ieee80211.h>
#include <wifi.h>
#include <osdep_service.h>
#include <wlan_bssdef.h>
#include <usb_osintf.h>
u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
u16 RTW_WPA_VERSION = 1;
u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
u16 RSN_VERSION_BSD = 1;
u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
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
};
int rtw_get_bit_value_from_ieee_value(u8 val)
{
unsigned char dot11_rate_table[] = {
2, 4, 11, 22, 12, 18, 24, 36, 48,
72, 96, 108, 0}; /* last element must be zero!! */
int i = 0;
while (dot11_rate_table[i] != 0) {
if (dot11_rate_table[i] == val)
return BIT(i);
i++;
}
return 0;
}
uint rtw_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 rtw_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;
}
int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
{
if (channel > 14) {
if ((rtw_is_cckrates_included(rate)) == true)
return WIRELESS_INVALID;
else
return WIRELESS_11A;
} else { /* could be pure B, pure G, or B/G */
if ((rtw_is_cckratesonly_included(rate)) == true)
return WIRELESS_11B;
else if ((rtw_is_cckrates_included(rate)) == true)
return WIRELESS_11BG;
else
return WIRELESS_11G;
}
}
u8 *rtw_set_fixed_ie(unsigned char *pbuf, unsigned int len, unsigned char *source,
unsigned int *frlen)
{
memcpy((void *)pbuf, (void *)source, len);
*frlen = *frlen + len;
return pbuf + len;
}
/* rtw_set_ie will update frame length */
u8 *rtw_set_ie
(
u8 *pbuf,
int index,
uint len,
u8 *source,
uint *frlen /* frame length */
)
{
_func_enter_;
*pbuf = (u8)index;
*(pbuf + 1) = (u8)len;
if (len > 0)
memcpy((void *)(pbuf + 2), (void *)source, len);
*frlen = *frlen + (len + 2);
_func_exit_;
return pbuf + len + 2;
}
inline u8 *rtw_set_ie_ch_switch (u8 *buf, u32 *buf_len, u8 ch_switch_mode,
u8 new_ch, u8 ch_switch_cnt)
{
u8 ie_data[3];
ie_data[0] = ch_switch_mode;
ie_data[1] = new_ch;
ie_data[2] = ch_switch_cnt;
return rtw_set_ie(buf, WLAN_EID_CHANNEL_SWITCH, 3, ie_data, buf_len);
}
inline u8 secondary_ch_offset_to_hal_ch_offset(u8 ch_offset)
{
if (ch_offset == SCN)
return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
else if (ch_offset == SCA)
return HAL_PRIME_CHNL_OFFSET_UPPER;
else if (ch_offset == SCB)
return HAL_PRIME_CHNL_OFFSET_LOWER;
return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
}
inline u8 hal_ch_offset_to_secondary_ch_offset(u8 ch_offset)
{
if (ch_offset == HAL_PRIME_CHNL_OFFSET_DONT_CARE)
return SCN;
else if (ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
return SCB;
else if (ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
return SCA;
return SCN;
}
inline u8 *rtw_set_ie_secondary_ch_offset(u8 *buf, u32 *buf_len, u8 secondary_ch_offset)
{
return rtw_set_ie(buf, WLAN_EID_SECONDARY_CHANNEL_OFFSET, 1, &secondary_ch_offset, buf_len);
}
inline u8 *rtw_set_ie_mesh_ch_switch_parm(u8 *buf, u32 *buf_len, u8 ttl,
u8 flags, u16 reason, u16 precedence)
{
u8 ie_data[6];
ie_data[0] = ttl;
ie_data[1] = flags;
RTW_PUT_LE16((u8 *)&ie_data[2], reason);
RTW_PUT_LE16((u8 *)&ie_data[4], precedence);
return rtw_set_ie(buf, 0x118, 6, ie_data, buf_len);
}
/*----------------------------------------------------------------------------
index: the information element id index, limit is the limit for search
-----------------------------------------------------------------------------*/
u8 *rtw_get_ie(u8 *pbuf, int index, int *len, int limit)
{
int tmp, i;
u8 *p;
_func_enter_;
if (limit < 1) {
_func_exit_;
return NULL;
}
p = pbuf;
i = 0;
*len = 0;
while (1) {
if (*p == index) {
*len = *(p + 1);
return p;
} else {
tmp = *(p + 1);
p += (tmp + 2);
i += (tmp + 2);
}
if (i >= limit)
break;
}
_func_exit_;
return NULL;
}
/**
* rtw_get_ie_ex - Search specific IE from a series of IEs
* @in_ie: Address of IEs to search
* @in_len: Length limit from in_ie
* @eid: Element ID to match
* @oui: OUI to match
* @oui_len: OUI length
* @ie: If not NULL and the specific IE is found, the IE will be copied to the buf starting from the specific IE
* @ielen: If not NULL and the specific IE is found, will set to the length of the entire IE
*
* Returns: The address of the specific IE found, or NULL
*/
u8 *rtw_get_ie_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len, u8 *ie, uint *ielen)
{
uint cnt;
u8 *target_ie = NULL;
if (ielen)
*ielen = 0;
if (!in_ie || in_len <= 0)
return target_ie;
cnt = 0;
while (cnt < in_len) {
if (eid == in_ie[cnt] && (!oui || _rtw_memcmp(&in_ie[cnt+2], oui, oui_len))) {
target_ie = &in_ie[cnt];
if (ie)
memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
if (ielen)
*ielen = in_ie[cnt+1]+2;
break;
} else {
cnt += in_ie[cnt+1]+2; /* goto next */
}
}
return target_ie;
}
/**
* rtw_ies_remove_ie - Find matching IEs and remove
* @ies: Address of IEs to search
* @ies_len: Pointer of length of ies, will update to new length
* @offset: The offset to start scarch
* @eid: Element ID to match
* @oui: OUI to match
* @oui_len: OUI length
*
* Returns: _SUCCESS: ies is updated, _FAIL: not updated
*/
int rtw_ies_remove_ie(u8 *ies, uint *ies_len, uint offset, u8 eid, u8 *oui, u8 oui_len)
{
int ret = _FAIL;
u8 *target_ie;
u32 target_ielen;
u8 *start;
uint search_len;
if (!ies || !ies_len || *ies_len <= offset)
goto exit;
start = ies + offset;
search_len = *ies_len - offset;
while (1) {
target_ie = rtw_get_ie_ex(start, search_len, eid, oui, oui_len, NULL, &target_ielen);
if (target_ie && target_ielen) {
u8 buf[MAX_IE_SZ] = {0};
u8 *remain_ies = target_ie + target_ielen;
uint remain_len = search_len - (remain_ies - start);
memcpy(buf, remain_ies, remain_len);
memcpy(target_ie, buf, remain_len);
*ies_len = *ies_len - target_ielen;
ret = _SUCCESS;
start = target_ie;
search_len = remain_len;
} else {
break;
}
}
exit:
return ret;
}
void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
{
_func_enter_;
_rtw_memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
switch (mode) {
case WIRELESS_11B:
memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
break;
case WIRELESS_11G:
case WIRELESS_11A:
case WIRELESS_11_5N:
case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
break;
case WIRELESS_11BG:
case WIRELESS_11G_24N:
case WIRELESS_11_24N:
case WIRELESS_11BG_24N:
memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
break;
}
_func_exit_;
}
uint rtw_get_rateset_len(u8 *rateset)
{
uint i = 0;
_func_enter_;
while (1) {
if ((rateset[i]) == 0)
break;
if (i > 12)
break;
i++;
}
_func_exit_;
return i;
}
int rtw_generate_ie(struct registry_priv *pregistrypriv)
{
u8 wireless_mode;
int sz = 0, rateLen;
struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
u8 *ie = pdev_network->IEs;
_func_enter_;
/* timestamp will be inserted by hardware */
sz += 8;
ie += sz;
/* beacon interval : 2bytes */
*(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
sz += 2;
ie += 2;
/* capability info */
*(u16 *)ie = 0;
*(__le16 *)ie |= cpu_to_le16(cap_IBSS);
if (pregistrypriv->preamble == PREAMBLE_SHORT)
*(__le16 *)ie |= cpu_to_le16(cap_ShortPremble);
if (pdev_network->Privacy)
*(__le16 *)ie |= cpu_to_le16(cap_Privacy);
sz += 2;
ie += 2;
/* SSID */
ie = rtw_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
/* supported rates */
if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
if (pdev_network->Configuration.DSConfig > 14)
wireless_mode = WIRELESS_11A_5N;
else
wireless_mode = WIRELESS_11BG_24N;
} else {
wireless_mode = pregistrypriv->wireless_mode;
}
rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
if (rateLen > 8) {
ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, 8, pdev_network->SupportedRates, &sz);
/* ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
} else {
ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, rateLen, pdev_network->SupportedRates, &sz);
}
/* DS parameter set */
ie = rtw_set_ie(ie, _DSSET_IE_, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
/* IBSS Parameter Set */
ie = rtw_set_ie(ie, _IBSS_PARA_IE_, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
if (rateLen > 8)
ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
_func_exit_;
return sz;
}
unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
{
int len;
u16 val16;
__le16 le_tmp;
unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
u8 *pbuf = pie;
int limit_new = limit;
while (1) {
pbuf = rtw_get_ie(pbuf, _WPA_IE_ID_, &len, limit_new);
if (pbuf) {
/* check if oui matches... */
if (_rtw_memcmp((pbuf + 2), wpa_oui_type, sizeof (wpa_oui_type)) == false)
goto check_next_ie;
/* check version... */
memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
val16 = le16_to_cpu(le_tmp);
if (val16 != 0x0001)
goto check_next_ie;
*wpa_ie_len = *(pbuf + 1);
return pbuf;
} else {
*wpa_ie_len = 0;
return NULL;
}
check_next_ie:
limit_new = limit - (pbuf - pie) - 2 - len;
if (limit_new <= 0)
break;
pbuf += (2 + len);
}
*wpa_ie_len = 0;
return NULL;
}
unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
{
return rtw_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
}
int rtw_get_wpa_cipher_suite(u8 *s)
{
if (_rtw_memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN) == true)
return WPA_CIPHER_NONE;
if (_rtw_memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN) == true)
return WPA_CIPHER_WEP40;
if (_rtw_memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN) == true)
return WPA_CIPHER_TKIP;
if (_rtw_memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN) == true)
return WPA_CIPHER_CCMP;
if (_rtw_memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN) == true)
return WPA_CIPHER_WEP104;
return 0;
}
int rtw_get_wpa2_cipher_suite(u8 *s)
{
if (_rtw_memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN) == true)
return WPA_CIPHER_NONE;
if (_rtw_memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN) == true)
return WPA_CIPHER_WEP40;
if (_rtw_memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN) == true)
return WPA_CIPHER_TKIP;
if (_rtw_memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN) == true)
return WPA_CIPHER_CCMP;
if (_rtw_memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN) == true)
return WPA_CIPHER_WEP104;
return 0;
}
int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
{
int i, ret = _SUCCESS;
int left, count;
u8 *pos;
u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
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)) ||
(_rtw_memcmp(wpa_ie+2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN) != true))
return _FAIL;
pos = wpa_ie;
pos += 8;
left = wpa_ie_len - 8;
/* group_cipher */
if (left >= WPA_SELECTOR_LEN) {
*group_cipher = rtw_get_wpa_cipher_suite(pos);
pos += WPA_SELECTOR_LEN;
left -= WPA_SELECTOR_LEN;
} else if (left > 0) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
return _FAIL;
}
/* pairwise_cipher */
if (left >= 2) {
count = RTW_GET_LE16(pos);
pos += 2;
left -= 2;
if (count == 0 || left < count * WPA_SELECTOR_LEN) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
"count %u left %u", __func__, count, left));
return _FAIL;
}
for (i = 0; i < count; i++) {
*pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
pos += WPA_SELECTOR_LEN;
left -= WPA_SELECTOR_LEN;
}
} else if (left == 1) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
return _FAIL;
}
if (is_8021x) {
if (left >= 6) {
pos += 2;
if (_rtw_memcmp(pos, SUITE_1X, 4) == 1) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s : there has 802.1x auth\n", __func__));
*is_8021x = 1;
}
}
}
return ret;
}
int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
{
int i, ret = _SUCCESS;
int left, count;
u8 *pos;
u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
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 = rtw_get_wpa2_cipher_suite(pos);
pos += RSN_SELECTOR_LEN;
left -= RSN_SELECTOR_LEN;
} else if (left > 0) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
return _FAIL;
}
/* pairwise_cipher */
if (left >= 2) {
count = RTW_GET_LE16(pos);
pos += 2;
left -= 2;
if (count == 0 || left < count * RSN_SELECTOR_LEN) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
"count %u left %u", __func__, count, left));
return _FAIL;
}
for (i = 0; i < count; i++) {
*pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
pos += RSN_SELECTOR_LEN;
left -= RSN_SELECTOR_LEN;
}
} else if (left == 1) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
return _FAIL;
}
if (is_8021x) {
if (left >= 6) {
pos += 2;
if (_rtw_memcmp(pos, SUITE_1X, 4) == 1) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__));
*is_8021x = 1;
}
}
}
return ret;
}
int rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
{
u8 authmode, sec_idx, i;
u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
uint cnt;
_func_enter_;
/* Search required WPA or WPA2 IE and copy to sec_ie[] */
cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
sec_idx = 0;
while (cnt < in_len) {
authmode = in_ie[cnt];
if ((authmode == _WPA_IE_ID_) && (_rtw_memcmp(&in_ie[cnt+2], &wpa_oui[0], 4))) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
("\n rtw_get_wpa_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
sec_idx, in_ie[cnt+1]+2));
if (wpa_ie) {
memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
for (i = 0; i < (in_ie[cnt+1]+2); i += 8) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
wpa_ie[i], wpa_ie[i+1], wpa_ie[i+2], wpa_ie[i+3], wpa_ie[i+4],
wpa_ie[i+5], wpa_ie[i+6], wpa_ie[i+7]));
}
}
*wpa_len = in_ie[cnt+1]+2;
cnt += in_ie[cnt+1]+2; /* get next */
} else {
if (authmode == _WPA2_IE_ID_) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
("\n get_rsn_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
sec_idx, in_ie[cnt+1]+2));
if (rsn_ie) {
memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt+1]+2);
for (i = 0; i < (in_ie[cnt+1]+2); i += 8) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
rsn_ie[i], rsn_ie[i+1], rsn_ie[i+2], rsn_ie[i+3], rsn_ie[i+4],
rsn_ie[i+5], rsn_ie[i+6], rsn_ie[i+7]));
}
}
*rsn_len = in_ie[cnt+1]+2;
cnt += in_ie[cnt+1]+2; /* get next */
} else {
cnt += in_ie[cnt+1]+2; /* get next */
}
}
}
_func_exit_;
return *rsn_len + *wpa_len;
}
u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
{
u8 match = false;
u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
if (ie_ptr == NULL)
return match;
eid = ie_ptr[0];
if ((eid == _WPA_IE_ID_) && (_rtw_memcmp(&ie_ptr[2], wps_oui, 4))) {
*wps_ielen = ie_ptr[1]+2;
match = true;
}
return match;
}
/**
* rtw_get_wps_ie - Search WPS IE from a series of IEs
* @in_ie: Address of IEs to search
* @in_len: Length limit from in_ie
* @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
* @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
*
* Returns: The address of the WPS IE found, or NULL
*/
u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
{
uint cnt;
u8 *wpsie_ptr = NULL;
u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
if (wps_ielen)
*wps_ielen = 0;
if (!in_ie || in_len <= 0)
return wpsie_ptr;
cnt = 0;
while (cnt < in_len) {
eid = in_ie[cnt];
if ((eid == _WPA_IE_ID_) && (_rtw_memcmp(&in_ie[cnt+2], wps_oui, 4))) {
wpsie_ptr = &in_ie[cnt];
if (wps_ie)
memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
if (wps_ielen)
*wps_ielen = in_ie[cnt+1]+2;
cnt += in_ie[cnt+1]+2;
break;
} else {
cnt += in_ie[cnt+1]+2; /* goto next */
}
}
return wpsie_ptr;
}
/**
* rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
* @wps_ie: Address of WPS IE to search
* @wps_ielen: Length limit from wps_ie
* @target_attr_id: The attribute ID of WPS attribute to search
* @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
* @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
*
* Returns: the address of the specific WPS attribute found, or NULL
*/
u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id , u8 *buf_attr, u32 *len_attr)
{
u8 *attr_ptr = NULL;
u8 *target_attr_ptr = NULL;
u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
if (len_attr)
*len_attr = 0;
if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
(_rtw_memcmp(wps_ie + 2, wps_oui , 4) != true))
return attr_ptr;
/* 6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
attr_ptr = wps_ie + 6; /* goto first attr */
while (attr_ptr - wps_ie < wps_ielen) {
/* 4 = 2(Attribute ID) + 2(Length) */
u16 attr_id = RTW_GET_BE16(attr_ptr);
u16 attr_data_len = RTW_GET_BE16(attr_ptr + 2);
u16 attr_len = attr_data_len + 4;
if (attr_id == target_attr_id) {
target_attr_ptr = attr_ptr;
if (buf_attr)
memcpy(buf_attr, attr_ptr, attr_len);
if (len_attr)
*len_attr = attr_len;
break;
} else {
attr_ptr += attr_len; /* goto next */
}
}
return target_attr_ptr;
}
/**
* rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
* @wps_ie: Address of WPS IE to search
* @wps_ielen: Length limit from wps_ie
* @target_attr_id: The attribute ID of WPS attribute to search
* @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
* @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
*
* Returns: the address of the specific WPS attribute content found, or NULL
*/
u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id , u8 *buf_content, uint *len_content)
{
u8 *attr_ptr;
u32 attr_len;
if (len_content)
*len_content = 0;
attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
if (attr_ptr && attr_len) {
if (buf_content)
memcpy(buf_content, attr_ptr+4, attr_len-4);
if (len_content)
*len_content = attr_len-4;
return attr_ptr+4;
}
return NULL;
}
static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
struct rtw_ieee802_11_elems *elems,
int show_errors)
{
unsigned int oui;
/* first 3 bytes in vendor specific information element are the IEEE
* OUI of the vendor. The following byte is used a vendor specific
* sub-type. */
if (elen < 4) {
if (show_errors) {
DBG_88E("short vendor specific information element ignored (len=%lu)\n",
(unsigned long) elen);
}
return -1;
}
oui = RTW_GET_BE24(pos);
switch (oui) {
case OUI_MICROSOFT:
/* Microsoft/Wi-Fi information elements are further typed and
* subtyped */
switch (pos[3]) {
case 1:
/* Microsoft OUI (00:50:F2) with OUI Type 1:
* real WPA information element */
elems->wpa_ie = pos;
elems->wpa_ie_len = elen;
break;
case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
if (elen < 5) {
DBG_88E("short WME information element ignored (len=%lu)\n",
(unsigned long) elen);
return -1;
}
switch (pos[4]) {
case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
elems->wme = pos;
elems->wme_len = elen;
break;
case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
elems->wme_tspec = pos;
elems->wme_tspec_len = elen;
break;
default:
DBG_88E("unknown WME information element ignored (subtype=%d len=%lu)\n",
pos[4], (unsigned long) elen);
return -1;
}
break;
case 4:
/* Wi-Fi Protected Setup (WPS) IE */
elems->wps_ie = pos;
elems->wps_ie_len = elen;
break;
default:
DBG_88E("Unknown Microsoft information element ignored (type=%d len=%lu)\n",
pos[3], (unsigned long) elen);
return -1;
}
break;
case OUI_BROADCOM:
switch (pos[3]) {
case VENDOR_HT_CAPAB_OUI_TYPE:
elems->vendor_ht_cap = pos;
elems->vendor_ht_cap_len = elen;
break;
default:
DBG_88E("Unknown Broadcom information element ignored (type=%d len=%lu)\n",
pos[3], (unsigned long) elen);
return -1;
}
break;
default:
DBG_88E("unknown vendor specific information element ignored (vendor OUI %02x:%02x:%02x len=%lu)\n",
pos[0], pos[1], pos[2], (unsigned long) elen);
return -1;
}
return 0;
}
/**
* ieee802_11_parse_elems - Parse information elements in management frames
* @start: Pointer to the start of IEs
* @len: Length of IE buffer in octets
* @elems: Data structure for parsed elements
* @show_errors: Whether to show parsing errors in debug log
* Returns: Parsing result
*/
enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
struct rtw_ieee802_11_elems *elems,
int show_errors)
{
uint left = len;
u8 *pos = start;
int unknown = 0;
_rtw_memset(elems, 0, sizeof(*elems));
while (left >= 2) {
u8 id, elen;
id = *pos++;
elen = *pos++;
left -= 2;
if (elen > left) {
if (show_errors) {
DBG_88E("IEEE 802.11 element parse failed (id=%d elen=%d left=%lu)\n",
id, elen, (unsigned long) left);
}
return ParseFailed;
}
switch (id) {
case WLAN_EID_SSID:
elems->ssid = pos;
elems->ssid_len = elen;
break;
case WLAN_EID_SUPP_RATES:
elems->supp_rates = pos;
elems->supp_rates_len = elen;
break;
case WLAN_EID_FH_PARAMS:
elems->fh_params = pos;
elems->fh_params_len = elen;
break;
case WLAN_EID_DS_PARAMS:
elems->ds_params = pos;
elems->ds_params_len = elen;
break;
case WLAN_EID_CF_PARAMS:
elems->cf_params = pos;
elems->cf_params_len = elen;
break;
case WLAN_EID_TIM:
elems->tim = pos;
elems->tim_len = elen;
break;
case WLAN_EID_IBSS_PARAMS:
elems->ibss_params = pos;
elems->ibss_params_len = elen;
break;
case WLAN_EID_CHALLENGE:
elems->challenge = pos;
elems->challenge_len = elen;
break;
case WLAN_EID_ERP_INFO:
elems->erp_info = pos;
elems->erp_info_len = elen;
break;
case WLAN_EID_EXT_SUPP_RATES:
elems->ext_supp_rates = pos;
elems->ext_supp_rates_len = elen;
break;
case WLAN_EID_VENDOR_SPECIFIC:
if (rtw_ieee802_11_parse_vendor_specific(pos, elen, elems, show_errors))
unknown++;
break;
case WLAN_EID_RSN:
elems->rsn_ie = pos;
elems->rsn_ie_len = elen;
break;
case WLAN_EID_PWR_CAPABILITY:
elems->power_cap = pos;
elems->power_cap_len = elen;
break;
case WLAN_EID_SUPPORTED_CHANNELS:
elems->supp_channels = pos;
elems->supp_channels_len = elen;
break;
case WLAN_EID_MOBILITY_DOMAIN:
elems->mdie = pos;
elems->mdie_len = elen;
break;
case WLAN_EID_FAST_BSS_TRANSITION:
elems->ftie = pos;
elems->ftie_len = elen;
break;
case WLAN_EID_TIMEOUT_INTERVAL:
elems->timeout_int = pos;
elems->timeout_int_len = elen;
break;
case WLAN_EID_HT_CAP:
elems->ht_capabilities = pos;
elems->ht_capabilities_len = elen;
break;
case WLAN_EID_HT_OPERATION:
elems->ht_operation = pos;
elems->ht_operation_len = elen;
break;
default:
unknown++;
if (!show_errors)
break;
DBG_88E("IEEE 802.11 element parse ignored unknown element (id=%d elen=%d)\n",
id, elen);
break;
}
left -= elen;
pos += elen;
}
if (left)
return ParseFailed;
return unknown ? ParseUnknown : ParseOK;
}
u8 key_char2num(u8 ch)
{
if ((ch >= '0') && (ch <= '9'))
return ch - '0';
else if ((ch >= 'a') && (ch <= 'f'))
return ch - 'a' + 10;
else if ((ch >= 'A') && (ch <= 'F'))
return ch - 'A' + 10;
else
return 0xff;
}
u8 str_2char2num(u8 hch, u8 lch)
{
return (key_char2num(hch) * 10) + key_char2num(lch);
}
u8 key_2char2num(u8 hch, u8 lch)
{
return (key_char2num(hch) << 4) | key_char2num(lch);
}
void rtw_macaddr_cfg(u8 *mac_addr)
{
u8 mac[ETH_ALEN];
if (mac_addr == NULL)
return;
if (rtw_initmac) { /* Users specify the mac address */
int jj, kk;
for (jj = 0, kk = 0; jj < ETH_ALEN; jj++, kk += 3)
mac[jj] = key_2char2num(rtw_initmac[kk], rtw_initmac[kk + 1]);
memcpy(mac_addr, mac, ETH_ALEN);
} else { /* Use the mac address stored in the Efuse */
memcpy(mac, mac_addr, ETH_ALEN);
}
if (((mac[0] == 0xff) && (mac[1] == 0xff) && (mac[2] == 0xff) &&
(mac[3] == 0xff) && (mac[4] == 0xff) && (mac[5] == 0xff)) ||
((mac[0] == 0x0) && (mac[1] == 0x0) && (mac[2] == 0x0) &&
(mac[3] == 0x0) && (mac[4] == 0x0) && (mac[5] == 0x0))) {
mac[0] = 0x00;
mac[1] = 0xe0;
mac[2] = 0x4c;
mac[3] = 0x87;
mac[4] = 0x00;
mac[5] = 0x00;
/* use default mac addresss */
memcpy(mac_addr, mac, ETH_ALEN);
DBG_88E("MAC Address from efuse error, assign default one !!!\n");
}
DBG_88E("rtw_macaddr_cfg MAC Address = %pM\n", (mac_addr));
}
void dump_ies(u8 *buf, u32 buf_len)
{
u8 *pos = (u8 *)buf;
u8 id, len;
while (pos-buf <= buf_len) {
id = *pos;
len = *(pos+1);
DBG_88E("%s ID:%u, LEN:%u\n", __func__, id, len);
#ifdef CONFIG_88EU_P2P
dump_p2p_ie(pos, len);
#endif
dump_wps_ie(pos, len);
pos += (2 + len);
}
}
void dump_wps_ie(u8 *ie, u32 ie_len)
{
u8 *pos = (u8 *)ie;
u16 id;
u16 len;
u8 *wps_ie;
uint wps_ielen;
wps_ie = rtw_get_wps_ie(ie, ie_len, NULL, &wps_ielen);
if (wps_ie != ie || wps_ielen == 0)
return;
pos += 6;
while (pos-ie < ie_len) {
id = RTW_GET_BE16(pos);
len = RTW_GET_BE16(pos + 2);
DBG_88E("%s ID:0x%04x, LEN:%u\n", __func__, id, len);
pos += (4+len);
}
}
#ifdef CONFIG_88EU_P2P
void dump_p2p_ie(u8 *ie, u32 ie_len)
{
u8 *pos = (u8 *)ie;
u8 id;
u16 len;
u8 *p2p_ie;
uint p2p_ielen;
p2p_ie = rtw_get_p2p_ie(ie, ie_len, NULL, &p2p_ielen);
if (p2p_ie != ie || p2p_ielen == 0)
return;
pos += 6;
while (pos-ie < ie_len) {
id = *pos;
len = RTW_GET_LE16(pos+1);
DBG_88E("%s ID:%u, LEN:%u\n", __func__, id, len);
pos += (3+len);
}
}
/**
* rtw_get_p2p_ie - Search P2P IE from a series of IEs
* @in_ie: Address of IEs to search
* @in_len: Length limit from in_ie
* @p2p_ie: If not NULL and P2P IE is found, P2P IE will be copied to the buf starting from p2p_ie
* @p2p_ielen: If not NULL and P2P IE is found, will set to the length of the entire P2P IE
*
* Returns: The address of the P2P IE found, or NULL
*/
u8 *rtw_get_p2p_ie(u8 *in_ie, int in_len, u8 *p2p_ie, uint *p2p_ielen)
{
uint cnt = 0;
u8 *p2p_ie_ptr;
u8 eid, p2p_oui[4] = {0x50, 0x6F, 0x9A, 0x09};
if (p2p_ielen != NULL)
*p2p_ielen = 0;
while (cnt < in_len) {
eid = in_ie[cnt];
if ((in_len < 0) || (cnt > MAX_IE_SZ)) {
dump_stack();
return NULL;
}
if ((eid == _VENDOR_SPECIFIC_IE_) && (_rtw_memcmp(&in_ie[cnt+2], p2p_oui, 4) == true)) {
p2p_ie_ptr = in_ie + cnt;
if (p2p_ie != NULL)
memcpy(p2p_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
if (p2p_ielen != NULL)
*p2p_ielen = in_ie[cnt + 1] + 2;
return p2p_ie_ptr;
} else {
cnt += in_ie[cnt + 1] + 2; /* goto next */
}
}
return NULL;
}
/**
* rtw_get_p2p_attr - Search a specific P2P attribute from a given P2P IE
* @p2p_ie: Address of P2P IE to search
* @p2p_ielen: Length limit from p2p_ie
* @target_attr_id: The attribute ID of P2P attribute to search
* @buf_attr: If not NULL and the P2P attribute is found, P2P attribute will be copied to the buf starting from buf_attr
* @len_attr: If not NULL and the P2P attribute is found, will set to the length of the entire P2P attribute
*
* Returns: the address of the specific WPS attribute found, or NULL
*/
u8 *rtw_get_p2p_attr(u8 *p2p_ie, uint p2p_ielen, u8 target_attr_id , u8 *buf_attr, u32 *len_attr)
{
u8 *attr_ptr = NULL;
u8 *target_attr_ptr = NULL;
u8 p2p_oui[4] = {0x50, 0x6F, 0x9A, 0x09};
if (len_attr)
*len_attr = 0;
if (!p2p_ie || (p2p_ie[0] != _VENDOR_SPECIFIC_IE_) ||
(_rtw_memcmp(p2p_ie + 2, p2p_oui , 4) != true))
return attr_ptr;
/* 6 = 1(Element ID) + 1(Length) + 3 (OUI) + 1(OUI Type) */
attr_ptr = p2p_ie + 6; /* goto first attr */
while (attr_ptr - p2p_ie < p2p_ielen) {
/* 3 = 1(Attribute ID) + 2(Length) */
u8 attr_id = *attr_ptr;
u16 attr_data_len = RTW_GET_LE16(attr_ptr + 1);
u16 attr_len = attr_data_len + 3;
if (attr_id == target_attr_id) {
target_attr_ptr = attr_ptr;
if (buf_attr)
memcpy(buf_attr, attr_ptr, attr_len);
if (len_attr)
*len_attr = attr_len;
break;
} else {
attr_ptr += attr_len; /* goto next */
}
}
return target_attr_ptr;
}
/**
* rtw_get_p2p_attr_content - Search a specific P2P attribute content from a given P2P IE
* @p2p_ie: Address of P2P IE to search
* @p2p_ielen: Length limit from p2p_ie
* @target_attr_id: The attribute ID of P2P attribute to search
* @buf_content: If not NULL and the P2P attribute is found, P2P attribute content will be copied to the buf starting from buf_content
* @len_content: If not NULL and the P2P attribute is found, will set to the length of the P2P attribute content
*
* Returns: the address of the specific P2P attribute content found, or NULL
*/
u8 *rtw_get_p2p_attr_content(u8 *p2p_ie, uint p2p_ielen, u8 target_attr_id , u8 *buf_content, uint *len_content)
{
u8 *attr_ptr;
u32 attr_len;
if (len_content)
*len_content = 0;
attr_ptr = rtw_get_p2p_attr(p2p_ie, p2p_ielen, target_attr_id, NULL, &attr_len);
if (attr_ptr && attr_len) {
if (buf_content)
memcpy(buf_content, attr_ptr+3, attr_len-3);
if (len_content)
*len_content = attr_len-3;
return attr_ptr+3;
}
return NULL;
}
u32 rtw_set_p2p_attr_content(u8 *pbuf, u8 attr_id, u16 attr_len, u8 *pdata_attr)
{
u32 a_len;
*pbuf = attr_id;
/* u16*)(pbuf + 1) = cpu_to_le16(attr_len); */
RTW_PUT_LE16(pbuf + 1, attr_len);
if (pdata_attr)
memcpy(pbuf + 3, pdata_attr, attr_len);
a_len = attr_len + 3;
return a_len;
}
static uint rtw_p2p_attr_remove(u8 *ie, uint ielen_ori, u8 attr_id)
{
u8 *target_attr;
u32 target_attr_len;
uint ielen = ielen_ori;
while (1) {
target_attr = rtw_get_p2p_attr(ie, ielen, attr_id, NULL, &target_attr_len);
if (target_attr && target_attr_len) {
u8 *next_attr = target_attr+target_attr_len;
uint remain_len = ielen-(next_attr-ie);
_rtw_memset(target_attr, 0, target_attr_len);
memcpy(target_attr, next_attr, remain_len);
_rtw_memset(target_attr+remain_len, 0, target_attr_len);
*(ie+1) -= target_attr_len;
ielen -= target_attr_len;
} else {
break;
}
}
return ielen;
}
void rtw_wlan_bssid_ex_remove_p2p_attr(struct wlan_bssid_ex *bss_ex, u8 attr_id)
{
u8 *p2p_ie;
uint p2p_ielen, p2p_ielen_ori;
p2p_ie = rtw_get_p2p_ie(bss_ex->IEs+_FIXED_IE_LENGTH_, bss_ex->IELength-_FIXED_IE_LENGTH_, NULL, &p2p_ielen_ori);
if (p2p_ie) {
p2p_ielen = rtw_p2p_attr_remove(p2p_ie, p2p_ielen_ori, attr_id);
if (p2p_ielen != p2p_ielen_ori) {
u8 *next_ie_ori = p2p_ie+p2p_ielen_ori;
u8 *next_ie = p2p_ie+p2p_ielen;
uint remain_len = bss_ex->IELength-(next_ie_ori-bss_ex->IEs);
memcpy(next_ie, next_ie_ori, remain_len);
_rtw_memset(next_ie+remain_len, 0, p2p_ielen_ori-p2p_ielen);
bss_ex->IELength -= p2p_ielen_ori-p2p_ielen;
}
}
}
#endif /* CONFIG_88EU_P2P */
/* Baron adds to avoid FreeBSD warning */
int ieee80211_is_empty_essid(const char *essid, int essid_len)
{
/* Single white space is for Linksys APs */
if (essid_len == 1 && essid[0] == ' ')
return 1;
/* Otherwise, if the entire essid is 0, we assume it is hidden */
while (essid_len) {
essid_len--;
if (essid[essid_len] != '\0')
return 0;
}
return 1;
}
int ieee80211_get_hdrlen(u16 fc)
{
int hdrlen = 24;
switch (WLAN_FC_GET_TYPE(fc)) {
case RTW_IEEE80211_FTYPE_DATA:
if (fc & RTW_IEEE80211_STYPE_QOS_DATA)
hdrlen += 2;
if ((fc & RTW_IEEE80211_FCTL_FROMDS) && (fc & RTW_IEEE80211_FCTL_TODS))
hdrlen += 6; /* Addr4 */
break;
case RTW_IEEE80211_FTYPE_CTL:
switch (WLAN_FC_GET_STYPE(fc)) {
case RTW_IEEE80211_STYPE_CTS:
case RTW_IEEE80211_STYPE_ACK:
hdrlen = 10;
break;
default:
hdrlen = 16;
break;
}
break;
}
return hdrlen;
}
static int rtw_get_cipher_info(struct wlan_network *pnetwork)
{
u32 wpa_ielen;
unsigned char *pbuf;
int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
int ret = _FAIL;
pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
if (pbuf && (wpa_ielen > 0)) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
pnetwork->BcnInfo.group_cipher = group_cipher;
pnetwork->BcnInfo.is_8021x = is8021x;
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
__func__, pnetwork->BcnInfo.pairwise_cipher, pnetwork->BcnInfo.is_8021x));
ret = _SUCCESS;
}
} else {
pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
if (pbuf && (wpa_ielen > 0)) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE OK!!!\n"));
pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
pnetwork->BcnInfo.group_cipher = group_cipher;
pnetwork->BcnInfo.is_8021x = is8021x;
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d,"
"pnetwork->group_cipher is %d, is_8021x is %d", __func__, pnetwork->BcnInfo.pairwise_cipher,
pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
ret = _SUCCESS;
}
}
}
return ret;
}
void rtw_get_bcn_info(struct wlan_network *pnetwork)
{
unsigned short cap = 0;
u8 bencrypt = 0;
__le16 le_tmp;
u16 wpa_len = 0, rsn_len = 0;
struct HT_info_element *pht_info = NULL;
struct rtw_ieee80211_ht_cap *pht_cap = NULL;
unsigned int len;
unsigned char *p;
memcpy(&le_tmp, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
cap = le16_to_cpu(le_tmp);
if (cap & WLAN_CAPABILITY_PRIVACY) {
bencrypt = 1;
pnetwork->network.Privacy = 1;
} else {
pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
}
rtw_get_sec_ie(pnetwork->network.IEs , pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
if (rsn_len > 0) {
pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
} else if (wpa_len > 0) {
pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
} else {
if (bencrypt)
pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
}
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
pnetwork->BcnInfo.encryp_protocol));
RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
pnetwork->BcnInfo.encryp_protocol));
rtw_get_cipher_info(pnetwork);
/* get bwmode and ch_offset */
/* parsing HT_CAP_IE */
p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_CAPABILITY_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
if (p && len > 0) {
pht_cap = (struct rtw_ieee80211_ht_cap *)(p + 2);
pnetwork->BcnInfo.ht_cap_info = pht_cap->cap_info;
} else {
pnetwork->BcnInfo.ht_cap_info = 0;
}
/* parsing HT_INFO_IE */
p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_ADD_INFO_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
if (p && len > 0) {
pht_info = (struct HT_info_element *)(p + 2);
pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
} else {
pnetwork->BcnInfo.ht_info_infos_0 = 0;
}
}
/* show MCS rate, unit: 100Kbps */
u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40, unsigned char *MCS_rate)
{
u16 max_rate = 0;
if (rf_type == RF_1T1R) {
if (MCS_rate[0] & BIT(7))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
else if (MCS_rate[0] & BIT(6))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
else if (MCS_rate[0] & BIT(5))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
else if (MCS_rate[0] & BIT(4))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
else if (MCS_rate[0] & BIT(3))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
else if (MCS_rate[0] & BIT(2))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
else if (MCS_rate[0] & BIT(1))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
else if (MCS_rate[0] & BIT(0))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
} else {
if (MCS_rate[1]) {
if (MCS_rate[1] & BIT(7))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 3000 : 2700) : ((short_GI_20) ? 1444 : 1300);
else if (MCS_rate[1] & BIT(6))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 2700 : 2430) : ((short_GI_20) ? 1300 : 1170);
else if (MCS_rate[1] & BIT(5))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 2400 : 2160) : ((short_GI_20) ? 1156 : 1040);
else if (MCS_rate[1] & BIT(4))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1800 : 1620) : ((short_GI_20) ? 867 : 780);
else if (MCS_rate[1] & BIT(3))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
else if (MCS_rate[1] & BIT(2))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
else if (MCS_rate[1] & BIT(1))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
else if (MCS_rate[1] & BIT(0))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
} else {
if (MCS_rate[0] & BIT(7))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
else if (MCS_rate[0] & BIT(6))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
else if (MCS_rate[0] & BIT(5))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
else if (MCS_rate[0] & BIT(4))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
else if (MCS_rate[0] & BIT(3))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
else if (MCS_rate[0] & BIT(2))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
else if (MCS_rate[0] & BIT(1))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
else if (MCS_rate[0] & BIT(0))
max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
}
}
return max_rate;
}
int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
{
const u8 *frame_body = frame + sizeof(struct rtw_ieee80211_hdr_3addr);
u16 fc;
u8 c, a = 0;
fc = le16_to_cpu(((struct rtw_ieee80211_hdr_3addr *)frame)->frame_ctl);
if ((fc & (RTW_IEEE80211_FCTL_FTYPE|RTW_IEEE80211_FCTL_STYPE)) !=
(RTW_IEEE80211_FTYPE_MGMT|RTW_IEEE80211_STYPE_ACTION))
return false;
c = frame_body[0];
switch (c) {
case RTW_WLAN_CATEGORY_P2P: /* vendor-specific */
break;
default:
a = frame_body[1];
}
if (category)
*category = c;
if (action)
*action = a;
return true;
}
static const char *_action_public_str[] = {
"ACT_PUB_BSSCOEXIST",
"ACT_PUB_DSE_ENABLE",
"ACT_PUB_DSE_DEENABLE",
"ACT_PUB_DSE_REG_LOCATION",
"ACT_PUB_EXT_CHL_SWITCH",
"ACT_PUB_DSE_MSR_REQ",
"ACT_PUB_DSE_MSR_RPRT",
"ACT_PUB_MP",
"ACT_PUB_DSE_PWR_CONSTRAINT",
"ACT_PUB_VENDOR",
"ACT_PUB_GAS_INITIAL_REQ",
"ACT_PUB_GAS_INITIAL_RSP",
"ACT_PUB_GAS_COMEBACK_REQ",
"ACT_PUB_GAS_COMEBACK_RSP",
"ACT_PUB_TDLS_DISCOVERY_RSP",
"ACT_PUB_LOCATION_TRACK",
"ACT_PUB_RSVD",
};
const char *action_public_str(u8 action)
{
action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
return _action_public_str[action];
}
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