// SPDX-License-Identifier: GPL-2.0 /****************************************************************************** * * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved. * ******************************************************************************/ #define _IEEE80211_C #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) { if (rtw_is_cckrates_included(rate)) return WIRELESS_INVALID; else return WIRELESS_11A; } else{ /* 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, sint 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, sint index, sint *len, sint limit) { sint tmp, i; u8 *p; if (limit < 1) return NULL; p = pbuf; i = 0; *len = 0; while (1) { if (*p == index) { *len = *(p + 1); return p; } else{ 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; } 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) { 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 ? */ case WIRELESS_11_5AC: 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; 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.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); } /* HT Cap. */ if (((pregistrypriv->wireless_mode&WIRELESS_11_5N) || (pregistrypriv->wireless_mode&WIRELESS_11_24N)) && (pregistrypriv->ht_enable == true)) { /* todo: */ } /* pdev_network->IELength = sz; update IELength */ /* 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, _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; } 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 (!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) { 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 = le16_to_cpu(*(u16*)pos); */ 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 (!memcmp(pos, SUITE_1X, 4)) { 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 = le16_to_cpu(*(u16*)pos); */ 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 (!memcmp(pos, SUITE_1X, 4)) { RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__)); *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, i; 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 == _WAPI_IE_) */ if (authmode == _WAPI_IE_ && (!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); for (i = 0; i < (in_ie[cnt+1]+2); i = i+8) { RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n", wapi_ie[i], wapi_ie[i+1], wapi_ie[i+2], wapi_ie[i+3], wapi_ie[i+4], wapi_ie[i+5], wapi_ie[i+6], wapi_ie[i+7])); } } 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 */ 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; /* 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_) && (!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 = 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 = 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 */ } } } 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))) { /* DBG_8192C("==> found WPS_IE.....\n"); */ *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; } 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_) || (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; /* DBG_871X("%s attr_ptr:%p, id:%u, length:%u\n", __func__, attr_ptr, attr_id, attr_data_len); */ 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_871X("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_871X("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_871X("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_871X("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_871X("Unknown Broadcom " "information element ignored " "(type =%d len =%lu)\n", pos[3], (unsigned long) elen); return -1; } break; default: DBG_871X("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 */ 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) { if (show_errors) { DBG_871X("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; 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_VHT_OP_MODE_NOTIFY: elems->vht_op_mode_notify = pos; elems->vht_op_mode_notify_len = elen; break; default: unknown++; if (!show_errors) break; DBG_871X("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; } 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)) { if ((addr = of_get_property(np, "local-mac-address", &len)) && len == ETH_ALEN) { ether_addr_copy(mac_addr, addr); } else { eth_random_addr(mac_addr); DBG_871X("MAC Address from efuse error, assign random one !!!\n"); } } DBG_871X("rtw_macaddr_cfg MAC Address = "MAC_FMT"\n", MAC_ARG(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.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; /* 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->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 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 rf_type, u8 bw_40MHz, u8 short_GI, 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)?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); } else{ if (MCS_rate[1]) { if (MCS_rate[1] & BIT(7)) max_rate = (bw_40MHz) ? ((short_GI)?3000:2700):((short_GI)?1444:1300); else if (MCS_rate[1] & BIT(6)) max_rate = (bw_40MHz) ? ((short_GI)?2700:2430):((short_GI)?1300:1170); else if (MCS_rate[1] & BIT(5)) max_rate = (bw_40MHz) ? ((short_GI)?2400:2160):((short_GI)?1156:1040); else if (MCS_rate[1] & BIT(4)) max_rate = (bw_40MHz) ? ((short_GI)?1800:1620):((short_GI)?867:780); else if (MCS_rate[1] & BIT(3)) max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520); else if (MCS_rate[1] & BIT(2)) max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390); else if (MCS_rate[1] & BIT(1)) max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260); else if (MCS_rate[1] & BIT(0)) max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130); } else{ 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]; }