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      1 /*
      2  * IEEE 802.11 Common routines
      3  * Copyright (c) 2002-2009, Jouni Malinen <j (at) w1.fi>
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #ifndef IEEE802_11_COMMON_H
     10 #define IEEE802_11_COMMON_H
     11 
     12 /* Parsed Information Elements */
     13 struct ieee802_11_elems {
     14 	const u8 *ssid;
     15 	const u8 *supp_rates;
     16 	const u8 *fh_params;
     17 	const u8 *ds_params;
     18 	const u8 *cf_params;
     19 	const u8 *tim;
     20 	const u8 *ibss_params;
     21 	const u8 *challenge;
     22 	const u8 *erp_info;
     23 	const u8 *ext_supp_rates;
     24 	const u8 *wpa_ie;
     25 	const u8 *rsn_ie;
     26 	const u8 *wmm; /* WMM Information or Parameter Element */
     27 	const u8 *wmm_tspec;
     28 	const u8 *wps_ie;
     29 	const u8 *power_cap;
     30 	const u8 *supp_channels;
     31 	const u8 *mdie;
     32 	const u8 *ftie;
     33 	const u8 *timeout_int;
     34 	const u8 *ht_capabilities;
     35 	const u8 *ht_operation;
     36 	const u8 *vendor_ht_cap;
     37 	const u8 *p2p;
     38 	const u8 *link_id;
     39 	const u8 *interworking;
     40 
     41 	u8 ssid_len;
     42 	u8 supp_rates_len;
     43 	u8 fh_params_len;
     44 	u8 ds_params_len;
     45 	u8 cf_params_len;
     46 	u8 tim_len;
     47 	u8 ibss_params_len;
     48 	u8 challenge_len;
     49 	u8 erp_info_len;
     50 	u8 ext_supp_rates_len;
     51 	u8 wpa_ie_len;
     52 	u8 rsn_ie_len;
     53 	u8 wmm_len; /* 7 = WMM Information; 24 = WMM Parameter */
     54 	u8 wmm_tspec_len;
     55 	u8 wps_ie_len;
     56 	u8 power_cap_len;
     57 	u8 supp_channels_len;
     58 	u8 mdie_len;
     59 	u8 ftie_len;
     60 	u8 timeout_int_len;
     61 	u8 ht_capabilities_len;
     62 	u8 ht_operation_len;
     63 	u8 vendor_ht_cap_len;
     64 	u8 p2p_len;
     65 	u8 interworking_len;
     66 };
     67 
     68 typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
     69 
     70 ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
     71 				struct ieee802_11_elems *elems,
     72 				int show_errors);
     73 int ieee802_11_ie_count(const u8 *ies, size_t ies_len);
     74 struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
     75 					    u32 oui_type);
     76 struct ieee80211_hdr;
     77 const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len);
     78 
     79 #endif /* IEEE802_11_COMMON_H */
     80