From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/staging/rtl8723bs/core/rtw_ieee80211.c | 1162 ++++++++++++++++++++++++ 1 file changed, 1162 insertions(+) create mode 100644 drivers/staging/rtl8723bs/core/rtw_ieee80211.c (limited to 'drivers/staging/rtl8723bs/core/rtw_ieee80211.c') diff --git a/drivers/staging/rtl8723bs/core/rtw_ieee80211.c b/drivers/staging/rtl8723bs/core/rtw_ieee80211.c new file mode 100644 index 000000000..3d8a64f69 --- /dev/null +++ b/drivers/staging/rtl8723bs/core/rtw_ieee80211.c @@ -0,0 +1,1162 @@ +// SPDX-License-Identifier: GPL-2.0 +/****************************************************************************** + * + * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved. + * + ******************************************************************************/ + +#include +#include +#include +#include + +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) +{ + while (*rate) { + u8 r = *rate & 0x7f; + + if (r == 2 || r == 4 || r == 11 || r == 22) + return true; + rate++; + } + + return false; +} + +bool rtw_is_cckratesonly_included(u8 *rate) +{ + while (*rate) { + u8 r = *rate & 0x7f; + + if (r != 2 && r != 4 && r != 11 && r != 22) + return false; + rate++; + } + + 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; + if (rtw_is_cckrates_included(rate)) + return WIRELESS_11BG; + 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, + signed 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, signed int index, signed int *len, signed int limit) +{ + signed 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; +} + +/** + * 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 || !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; + } + 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 search + * @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 *remain_ies = target_ie + target_ielen; + uint remain_len = search_len - (remain_ies - start); + + memcpy(target_ie, remain_ies, 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 *supported_rates, uint mode) +{ + memset(supported_rates, 0, NDIS_802_11_LENGTH_RATES_EX); + + switch (mode) { + case WIRELESS_11B: + memcpy(supported_rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN); + break; + + case WIRELESS_11G: + memcpy(supported_rates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN); + break; + + case WIRELESS_11BG: + case WIRELESS_11G_24N: + case WIRELESS_11_24N: + case WIRELESS_11BG_24N: + memcpy(supported_rates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN); + memcpy(supported_rates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN); + break; + } +} + +uint rtw_get_rateset_len(u8 *rateset) +{ + uint i; + + for (i = 0; i < 13; i++) + if (rateset[i] == 0) + break; + 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.beacon_period);/* BCN_INTERVAL; */ + sz += 2; + ie += 2; + + /* capability info */ + *(u16 *)ie = 0; + + *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_IBSS); + + if (pregistrypriv->preamble == PREAMBLE_SHORT) + *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); + + if (pdev_network->privacy) + *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); + + sz += 2; + ie += 2; + + /* SSID */ + ie = rtw_set_ie(ie, WLAN_EID_SSID, pdev_network->ssid.ssid_length, pdev_network->ssid.ssid, &sz); + + /* supported rates */ + wireless_mode = pregistrypriv->wireless_mode; + + rtw_set_supported_rate(pdev_network->supported_rates, wireless_mode); + + rateLen = rtw_get_rateset_len(pdev_network->supported_rates); + + if (rateLen > 8) { + ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, 8, pdev_network->supported_rates, &sz); + /* ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->supported_rates + 8), &sz); */ + } else { + ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, rateLen, pdev_network->supported_rates, &sz); + } + + /* DS parameter set */ + ie = rtw_set_ie(ie, WLAN_EID_DS_PARAMS, 1, (u8 *)&(pdev_network->configuration.ds_config), &sz); + + /* IBSS Parameter Set */ + + ie = rtw_set_ie(ie, WLAN_EID_IBSS_PARAMS, 2, (u8 *)&(pdev_network->configuration.atim_window), &sz); + + if (rateLen > 8) + ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->supported_rates + 8), &sz); + + /* HT Cap. */ + if ((pregistrypriv->wireless_mode & WIRELESS_11_24N) && + (pregistrypriv->ht_enable == true)) { + /* todo: */ + } + + /* pdev_network->ie_length = sz; update ie_length */ + + /* return _SUCCESS; */ + + return sz; +} + +unsigned char *rtw_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; + int limit_new = limit; + __le16 le_tmp; + + while (1) { + pbuf = rtw_get_ie(pbuf, WLAN_EID_VENDOR_SPECIFIC, &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; + + } 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, WLAN_EID_RSN, 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 != WLAN_EID_VENDOR_SPECIFIC) || (*(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 = le16_to_cpu(*(u16*)pos); */ + 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 != WLAN_EID_RSN) || (*(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 = le16_to_cpu(*(u16*)pos); */ + 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; +} + +/* ifdef CONFIG_WAPI_SUPPORT */ +int rtw_get_wapi_ie(u8 *in_ie, uint in_len, u8 *wapi_ie, u16 *wapi_len) +{ + int len = 0; + u8 authmode; + uint cnt; + u8 wapi_oui1[4] = {0x0, 0x14, 0x72, 0x01}; + u8 wapi_oui2[4] = {0x0, 0x14, 0x72, 0x02}; + + if (wapi_len) + *wapi_len = 0; + + if (!in_ie || in_len <= 0) + return len; + + cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_); + + while (cnt < in_len) { + authmode = in_ie[cnt]; + + /* if (authmode == WLAN_EID_BSS_AC_ACCESS_DELAY) */ + if (authmode == WLAN_EID_BSS_AC_ACCESS_DELAY && (!memcmp(&in_ie[cnt+6], wapi_oui1, 4) || + !memcmp(&in_ie[cnt+6], wapi_oui2, 4))) { + if (wapi_ie) + memcpy(wapi_ie, &in_ie[cnt], in_ie[cnt+1]+2); + + if (wapi_len) + *wapi_len = in_ie[cnt+1]+2; + + cnt += in_ie[cnt+1]+2; /* get next */ + } else { + cnt += in_ie[cnt+1]+2; /* get next */ + } + } + + if (wapi_len) + len = *wapi_len; + + return len; +} +/* endif */ + +void 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 == WLAN_EID_VENDOR_SPECIFIC) && (!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 == WLAN_EID_RSN) { + 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 */ + } + } + } +} + +/** + * 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 == WLAN_EID_VENDOR_SPECIFIC) && (!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] != WLAN_EID_VENDOR_SPECIFIC) || + (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 = get_unaligned_be16(attr_ptr); + u16 attr_data_len = get_unaligned_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 = get_unaligned_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; +} + +/** + * rtw_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 ParseRes 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_CAPABILITY: + 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; + case WLAN_EID_VHT_CAPABILITY: + elems->vht_capabilities = pos; + elems->vht_capabilities_len = elen; + break; + case WLAN_EID_VHT_OPERATION: + elems->vht_operation = pos; + elems->vht_operation_len = elen; + break; + case WLAN_EID_OPMODE_NOTIF: + elems->vht_op_mode_notify = pos; + elems->vht_op_mode_notify_len = elen; + break; + default: + unknown++; + break; + } + + left -= elen; + pos += elen; + } + + if (left) + return ParseFailed; + + return unknown ? ParseUnknown : ParseOK; +} + +void rtw_macaddr_cfg(struct device *dev, u8 *mac_addr) +{ + u8 mac[ETH_ALEN]; + struct device_node *np = dev->of_node; + const unsigned char *addr; + int len; + + 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)) { + addr = of_get_property(np, "local-mac-address", &len); + + if (addr && len == ETH_ALEN) { + ether_addr_copy(mac_addr, addr); + } else { + eth_random_addr(mac_addr); + } + } +} + +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.ie_length-12); + + if (pbuf && (wpa_ielen > 0)) { + if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) { + pnetwork->bcn_info.pairwise_cipher = pairwise_cipher; + pnetwork->bcn_info.group_cipher = group_cipher; + pnetwork->bcn_info.is_8021x = is8021x; + ret = _SUCCESS; + } + } else { + pbuf = rtw_get_wpa2_ie(&pnetwork->network.ies[12], &wpa_ielen, pnetwork->network.ie_length-12); + + if (pbuf && (wpa_ielen > 0)) { + if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) { + pnetwork->bcn_info.pairwise_cipher = pairwise_cipher; + pnetwork->bcn_info.group_cipher = group_cipher; + pnetwork->bcn_info.is_8021x = is8021x; + ret = _SUCCESS; + } + } + } + + return ret; +} + +void rtw_get_bcn_info(struct wlan_network *pnetwork) +{ + unsigned short cap = 0; + u8 bencrypt = 0; + /* u8 wpa_ie[255], rsn_ie[255]; */ + 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; + __le16 le_cap; + + memcpy((u8 *)&le_cap, rtw_get_capability_from_ie(pnetwork->network.ies), 2); + cap = le16_to_cpu(le_cap); + if (cap & WLAN_CAPABILITY_PRIVACY) { + bencrypt = 1; + pnetwork->network.privacy = 1; + } else { + pnetwork->bcn_info.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS; + } + rtw_get_sec_ie(pnetwork->network.ies, pnetwork->network.ie_length, NULL, &rsn_len, NULL, &wpa_len); + + if (rsn_len > 0) { + pnetwork->bcn_info.encryp_protocol = ENCRYP_PROTOCOL_WPA2; + } else if (wpa_len > 0) { + pnetwork->bcn_info.encryp_protocol = ENCRYP_PROTOCOL_WPA; + } else { + if (bencrypt) + pnetwork->bcn_info.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_, WLAN_EID_HT_CAPABILITY, &len, pnetwork->network.ie_length - _FIXED_IE_LENGTH_); + if (p && len > 0) { + pht_cap = (struct ieee80211_ht_cap *)(p + 2); + pnetwork->bcn_info.ht_cap_info = le16_to_cpu(pht_cap->cap_info); + } else { + pnetwork->bcn_info.ht_cap_info = 0; + } + /* parsing HT_INFO_IE */ + p = rtw_get_ie(pnetwork->network.ies + _FIXED_IE_LENGTH_, WLAN_EID_HT_OPERATION, &len, pnetwork->network.ie_length - _FIXED_IE_LENGTH_); + if (p && len > 0) { + pht_info = (struct HT_info_element *)(p + 2); + pnetwork->bcn_info.ht_info_infos_0 = pht_info->infos[0]; + } else { + pnetwork->bcn_info.ht_info_infos_0 = 0; + } +} + +/* show MCS rate, unit: 100Kbps */ +u16 rtw_mcs_rate(u8 bw_40MHz, u8 short_GI, unsigned char *MCS_rate) +{ + u16 max_rate = 0; + + if (MCS_rate[0] & BIT(7)) + max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650); + else if (MCS_rate[0] & BIT(6)) + max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585); + else if (MCS_rate[0] & BIT(5)) + max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520); + else if (MCS_rate[0] & BIT(4)) + max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390); + else if (MCS_rate[0] & BIT(3)) + max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260); + else if (MCS_rate[0] & BIT(2)) + max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195); + else if (MCS_rate[0] & BIT(1)) + max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130); + else if (MCS_rate[0] & BIT(0)) + max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?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 ieee80211_hdr_3addr); + u16 fc; + u8 c; + u8 a = ACT_PUBLIC_MAX; + + fc = le16_to_cpu(((struct ieee80211_hdr_3addr *)frame)->frame_control); + + if ((fc & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE)) + != (IEEE80211_FTYPE_MGMT|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]; +} -- cgit v1.2.3