diff options
Diffstat (limited to 'drivers/staging/r8188eu/core/rtw_ieee80211.c')
| -rw-r--r-- | drivers/staging/r8188eu/core/rtw_ieee80211.c | 1150 |
1 files changed, 0 insertions, 1150 deletions
diff --git a/drivers/staging/r8188eu/core/rtw_ieee80211.c b/drivers/staging/r8188eu/core/rtw_ieee80211.c deleted file mode 100644 index bc8543ea2e66..000000000000 --- a/drivers/staging/r8188eu/core/rtw_ieee80211.c +++ /dev/null @@ -1,1150 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright(c) 2007 - 2011 Realtek Corporation. */ - -#define _IEEE80211_C - -#include "../include/drv_types.h" -#include "../include/ieee80211.h" -#include "../include/wifi.h" -#include "../include/osdep_service.h" -#include "../include/wlan_bssdef.h" -#include "../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; -} - -bool 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; -} - -bool 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) - return WIRELESS_INVALID; - /* could be pure B, pure G, or B/G */ - if (rtw_is_cckratesonly_included(rate)) - return WIRELESS_11B; - else if (rtw_is_cckrates_included(rate)) - 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 */ -) -{ - - *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 *rtw_get_ie(u8 *pbuf, int index, int *len, int limit) -{ - int 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; -} - -void rtw_set_supported_rate(u8 *SupportedRates, uint mode) -{ - - 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: - 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; - } - -} - -uint rtw_get_rateset_len(u8 *rateset) -{ - uint i = 0; - - while (1) { - if ((rateset[i]) == 0) - break; - if (i > 12) - break; - i++; - } - - 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; - - /* 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 */ - 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); - - 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 (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type))) - 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; - } - *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 (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN)) - return WPA_CIPHER_NONE; - if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN)) - return WPA_CIPHER_WEP40; - if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN)) - return WPA_CIPHER_TKIP; - if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN)) - return WPA_CIPHER_CCMP; - if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN)) - return WPA_CIPHER_WEP104; - - return 0; -} - -int rtw_get_wpa2_cipher_suite(u8 *s) -{ - if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN)) - return WPA_CIPHER_NONE; - if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN)) - return WPA_CIPHER_WEP40; - if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN)) - return WPA_CIPHER_TKIP; - if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN)) - return WPA_CIPHER_CCMP; - if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN)) - 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)) || - (memcmp(wpa_ie + 2, RTW_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 = rtw_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 = get_unaligned_le16(pos); - pos += 2; - left -= 2; - - if (count == 0 || left < count * WPA_SELECTOR_LEN) - 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) { - return _FAIL; - } - - if (is_8021x) { - if (left >= 6) { - pos += 2; - if (!memcmp(pos, SUITE_1X, 4)) - *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) { - return _FAIL; - } - - /* pairwise_cipher */ - if (left >= 2) { - count = get_unaligned_le16(pos); - pos += 2; - left -= 2; - - if (count == 0 || left < count * RSN_SELECTOR_LEN) - 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) { - return _FAIL; - } - - if (is_8021x) { - if (left >= 6) { - pos += 2; - if (!memcmp(pos, SUITE_1X, 4)) - *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; - 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))) { - if (wpa_ie) - 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_) { - if (rsn_ie) - 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; -} - -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) - return match; - - eid = ie_ptr[0]; - - if ((eid == _WPA_IE_ID_) && (!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_) && (!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; - } - 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_) || - (memcmp(wps_ie + 2, wps_oui, 4))) - 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; - } - 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) - 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) - 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: - return -1; - } - break; - case 4: - /* Wi-Fi Protected Setup (WPS) IE */ - elems->wps_ie = pos; - elems->wps_ie_len = elen; - break; - default: - 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: - return -1; - } - break; - default: - 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; - - memset(elems, 0, sizeof(*elems)); - - while (left >= 2) { - u8 id, elen; - - id = *pos++; - elen = *pos++; - left -= 2; - - if (elen > 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++; - 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) - return; - - if (rtw_initmac && mac_pton(rtw_initmac, mac)) { - /* Users specify the mac address */ - ether_addr_copy(mac_addr, mac); - } else { - /* Use the mac address stored in the Efuse */ - ether_addr_copy(mac, mac_addr); - } - - if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) - eth_random_addr(mac_addr); -} - -/** - * 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) - *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_) && !memcmp(&in_ie[cnt + 2], p2p_oui, 4)) { - p2p_ie_ptr = in_ie + cnt; - - if (p2p_ie) - memcpy(p2p_ie, &in_ie[cnt], in_ie[cnt + 1] + 2); - if (p2p_ielen) - *p2p_ielen = in_ie[cnt + 1] + 2; - return p2p_ie_ptr; - } - 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_) || - memcmp(p2p_ie + 2, p2p_oui, 4)) - 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 = get_unaligned_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; - } - 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); - - memset(target_attr, 0, target_attr_len); - memcpy(target_attr, next_attr, remain_len); - 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); - memset(next_ie + remain_len, 0, p2p_ielen_ori - p2p_ielen); - bss_ex->IELength -= p2p_ielen_ori - p2p_ielen; - } - } -} - -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)) { - if (rtw_parse_wpa_ie(pbuf, wpa_ielen + 2, &group_cipher, &pairwise_cipher, &is8021x) == _SUCCESS) { - pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher; - pnetwork->BcnInfo.group_cipher = group_cipher; - pnetwork->BcnInfo.is_8021x = is8021x; - ret = _SUCCESS; - } - } else { - pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength - 12); - - if (pbuf && (wpa_ielen > 0)) { - if (rtw_parse_wpa2_ie(pbuf, wpa_ielen + 2, &group_cipher, &pairwise_cipher, &is8021x) == _SUCCESS) { - pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher; - pnetwork->BcnInfo.group_cipher = group_cipher; - pnetwork->BcnInfo.is_8021x = is8021x; - 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 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); - - 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; - } - 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 ieee80211_ht_cap *)(p + 2); - pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(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 bw_40MHz, u8 short_GI_20, u8 short_GI_40, unsigned char *MCS_rate) -{ - u16 max_rate = 0; - - 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; -} |