/* * hostapd / IEEE 802.11 Management * Copyright (c) 2002-2006, Jouni Malinen * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Alternatively, this software may be distributed under the terms of BSD * license. * * See README and COPYING for more details. */ #ifndef IEEE802_11_H #define IEEE802_11_H /* IEEE 802.11 defines */ #define WLAN_FC_PVER (BIT(1) | BIT(0)) #define WLAN_FC_TODS BIT(8) #define WLAN_FC_FROMDS BIT(9) #define WLAN_FC_MOREFRAG BIT(10) #define WLAN_FC_RETRY BIT(11) #define WLAN_FC_PWRMGT BIT(12) #define WLAN_FC_MOREDATA BIT(13) #define WLAN_FC_ISWEP BIT(14) #define WLAN_FC_ORDER BIT(15) #define WLAN_FC_GET_TYPE(fc) (((fc) & (BIT(3) | BIT(2))) >> 2) #define WLAN_FC_GET_STYPE(fc) \ (((fc) & (BIT(7) | BIT(6) | BIT(5) | BIT(4))) >> 4) #define WLAN_GET_SEQ_FRAG(seq) ((seq) & (BIT(3) | BIT(2) | BIT(1) | BIT(0))) #define WLAN_GET_SEQ_SEQ(seq) \ (((seq) & (~(BIT(3) | BIT(2) | BIT(1) | BIT(0)))) >> 4) #define WLAN_FC_TYPE_MGMT 0 #define WLAN_FC_TYPE_CTRL 1 #define WLAN_FC_TYPE_DATA 2 /* management */ #define WLAN_FC_STYPE_ASSOC_REQ 0 #define WLAN_FC_STYPE_ASSOC_RESP 1 #define WLAN_FC_STYPE_REASSOC_REQ 2 #define WLAN_FC_STYPE_REASSOC_RESP 3 #define WLAN_FC_STYPE_PROBE_REQ 4 #define WLAN_FC_STYPE_PROBE_RESP 5 #define WLAN_FC_STYPE_BEACON 8 #define WLAN_FC_STYPE_ATIM 9 #define WLAN_FC_STYPE_DISASSOC 10 #define WLAN_FC_STYPE_AUTH 11 #define WLAN_FC_STYPE_DEAUTH 12 #define WLAN_FC_STYPE_ACTION 13 /* control */ #define WLAN_FC_STYPE_PSPOLL 10 #define WLAN_FC_STYPE_RTS 11 #define WLAN_FC_STYPE_CTS 12 #define WLAN_FC_STYPE_ACK 13 #define WLAN_FC_STYPE_CFEND 14 #define WLAN_FC_STYPE_CFENDACK 15 /* data */ #define WLAN_FC_STYPE_DATA 0 #define WLAN_FC_STYPE_DATA_CFACK 1 #define WLAN_FC_STYPE_DATA_CFPOLL 2 #define WLAN_FC_STYPE_DATA_CFACKPOLL 3 #define WLAN_FC_STYPE_NULLFUNC 4 #define WLAN_FC_STYPE_CFACK 5 #define WLAN_FC_STYPE_CFPOLL 6 #define WLAN_FC_STYPE_CFACKPOLL 7 #define WLAN_FC_STYPE_QOS_DATA 8 /* Authentication algorithms */ #define WLAN_AUTH_OPEN 0 #define WLAN_AUTH_SHARED_KEY 1 #define WLAN_AUTH_CHALLENGE_LEN 128 #define WLAN_CAPABILITY_ESS BIT(0) #define WLAN_CAPABILITY_IBSS BIT(1) #define WLAN_CAPABILITY_CF_POLLABLE BIT(2) #define WLAN_CAPABILITY_CF_POLL_REQUEST BIT(3) #define WLAN_CAPABILITY_PRIVACY BIT(4) #define WLAN_CAPABILITY_SHORT_PREAMBLE BIT(5) #define WLAN_CAPABILITY_PBCC BIT(6) #define WLAN_CAPABILITY_CHANNEL_AGILITY BIT(7) #define WLAN_CAPABILITY_SPECTRUM_MGMT BIT(8) #define WLAN_CAPABILITY_SHORT_SLOT_TIME BIT(10) #define WLAN_CAPABILITY_DSSS_OFDM BIT(13) /* Status codes */ #define WLAN_STATUS_SUCCESS 0 #define WLAN_STATUS_UNSPECIFIED_FAILURE 1 #define WLAN_STATUS_CAPS_UNSUPPORTED 10 #define WLAN_STATUS_REASSOC_NO_ASSOC 11 #define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12 #define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13 #define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14 #define WLAN_STATUS_CHALLENGE_FAIL 15 #define WLAN_STATUS_AUTH_TIMEOUT 16 #define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17 #define WLAN_STATUS_ASSOC_DENIED_RATES 18 /* IEEE 802.11b */ #define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19 #define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20 #define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21 /* IEEE 802.11h */ #define WLAN_STATUS_SPEC_MGMT_REQUIRED 22 #define WLAN_STATUS_PWR_CAPABILITY_NOT_VALID 23 #define WLAN_STATUS_SUPPORTED_CHANNEL_NOT_VALID 24 /* IEEE 802.11i */ #define WLAN_STATUS_INVALID_IE 40 #define WLAN_STATUS_GROUP_CIPHER_NOT_VALID 41 #define WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID 42 #define WLAN_STATUS_AKMP_NOT_VALID 43 #define WLAN_STATUS_UNSUPPORTED_RSN_IE_VERSION 44 #define WLAN_STATUS_INVALID_RSN_IE_CAPAB 45 #define WLAN_STATUS_CIPHER_REJECTED_PER_POLICY 46 /* Reason codes */ #define WLAN_REASON_UNSPECIFIED 1 #define WLAN_REASON_PREV_AUTH_NOT_VALID 2 #define WLAN_REASON_DEAUTH_LEAVING 3 #define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4 #define WLAN_REASON_DISASSOC_AP_BUSY 5 #define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6 #define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7 #define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8 #define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9 /* IEEE 802.11i */ #define WLAN_REASON_INVALID_IE 13 #define WLAN_REASON_MICHAEL_MIC_FAILURE 14 #define WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT 15 #define WLAN_REASON_GROUP_KEY_UPDATE_TIMEOUT 16 #define WLAN_REASON_IE_IN_4WAY_DIFFERS 17 #define WLAN_REASON_GROUP_CIPHER_NOT_VALID 18 #define WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID 19 #define WLAN_REASON_AKMP_NOT_VALID 20 #define WLAN_REASON_UNSUPPORTED_RSN_IE_VERSION 21 #define WLAN_REASON_INVALID_RSN_IE_CAPAB 22 #define WLAN_REASON_IEEE_802_1X_AUTH_FAILED 23 #define WLAN_REASON_CIPHER_SUITE_REJECTED 24 /* Information Element IDs */ #define WLAN_EID_SSID 0 #define WLAN_EID_SUPP_RATES 1 #define WLAN_EID_FH_PARAMS 2 #define WLAN_EID_DS_PARAMS 3 #define WLAN_EID_CF_PARAMS 4 #define WLAN_EID_TIM 5 #define WLAN_EID_IBSS_PARAMS 6 #define WLAN_EID_COUNTRY 7 #define WLAN_EID_CHALLENGE 16 /* EIDs defined by IEEE 802.11h - START */ #define WLAN_EID_PWR_CONSTRAINT 32 #define WLAN_EID_PWR_CAPABILITY 33 #define WLAN_EID_TPC_REQUEST 34 #define WLAN_EID_TPC_REPORT 35 #define WLAN_EID_SUPPORTED_CHANNELS 36 #define WLAN_EID_CHANNEL_SWITCH 37 #define WLAN_EID_MEASURE_REQUEST 38 #define WLAN_EID_MEASURE_REPORT 39 #define WLAN_EID_QUITE 40 #define WLAN_EID_IBSS_DFS 41 /* EIDs defined by IEEE 802.11h - END */ #define WLAN_EID_ERP_INFO 42 #define WLAN_EID_RSN 48 #define WLAN_EID_EXT_SUPP_RATES 50 #define WLAN_EID_GENERIC 221 #define WLAN_EID_VENDOR_SPECIFIC 221 struct ieee80211_mgmt { u16 frame_control; u16 duration; u8 da[6]; u8 sa[6]; u8 bssid[6]; u16 seq_ctrl; union { struct { u16 auth_alg; u16 auth_transaction; u16 status_code; /* possibly followed by Challenge text */ u8 variable[0]; } __attribute__ ((packed)) auth; struct { u16 reason_code; } __attribute__ ((packed)) deauth; struct { u16 capab_info; u16 listen_interval; /* followed by SSID and Supported rates */ u8 variable[0]; } __attribute__ ((packed)) assoc_req; struct { u16 capab_info; u16 status_code; u16 aid; /* followed by Supported rates */ u8 variable[0]; } __attribute__ ((packed)) assoc_resp, reassoc_resp; struct { u16 capab_info; u16 listen_interval; u8 current_ap[6]; /* followed by SSID and Supported rates */ u8 variable[0]; } __attribute__ ((packed)) reassoc_req; struct { u16 reason_code; } __attribute__ ((packed)) disassoc; struct { /* only variable items: SSID, Supported rates */ u8 variable[0]; } __attribute__ ((packed)) probe_req; struct { u8 timestamp[8]; u16 beacon_int; u16 capab_info; /* followed by some of SSID, Supported rates, * FH Params, DS Params, CF Params, IBSS Params */ u8 variable[0]; } __attribute__ ((packed)) probe_resp; struct { u8 timestamp[8]; u16 beacon_int; u16 capab_info; /* followed by some of SSID, Supported rates, * FH Params, DS Params, CF Params, IBSS Params, TIM */ u8 variable[0]; } __attribute__ ((packed)) beacon; struct { u8 category; union { struct { u8 action_code; u8 dialog_token; u8 status_code; u8 variable[0]; } __attribute__ ((packed)) wme_action; struct{ u8 action_code; u8 element_id; u8 length; u8 switch_mode; u8 new_chan; u8 switch_count; } __attribute__ ((packed)) chan_switch; } u; } __attribute__ ((packed)) action; } u; } __attribute__ ((packed)); #define ERP_INFO_NON_ERP_PRESENT BIT(0) #define ERP_INFO_USE_PROTECTION BIT(1) #define ERP_INFO_BARKER_PREAMBLE_MODE BIT(2) /* Parsed Information Elements */ struct ieee802_11_elems { u8 *ssid; u8 ssid_len; u8 *supp_rates; u8 supp_rates_len; u8 *fh_params; u8 fh_params_len; u8 *ds_params; u8 ds_params_len; u8 *cf_params; u8 cf_params_len; u8 *tim; u8 tim_len; u8 *ibss_params; u8 ibss_params_len; u8 *challenge; u8 challenge_len; u8 *erp_info; u8 erp_info_len; u8 *ext_supp_rates; u8 ext_supp_rates_len; u8 *wpa_ie; u8 wpa_ie_len; u8 *rsn_ie; u8 rsn_ie_len; u8 *wme; u8 wme_len; u8 *wme_tspec; u8 wme_tspec_len; u8 *power_cap; u8 power_cap_len; u8 *supp_channels; u8 supp_channels_len; }; typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes; struct hostapd_frame_info { u32 phytype; u32 channel; u32 datarate; u32 ssi_signal; unsigned int passive_scan:1; }; void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason); void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype, struct hostapd_frame_info *fi); void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype, int ok); ParseRes ieee802_11_parse_elems(struct hostapd_data *hapd, u8 *start, size_t len, struct ieee802_11_elems *elems, int show_errors); void ieee802_11_print_ssid(const u8 *ssid, u8 len); void ieee80211_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr, int local); int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen); int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, char *buf, size_t buflen); u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta, int probe); u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid); u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid); #endif /* IEEE802_11_H */