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1 /*
2  * IEEE 802.11 Common routines
3  * Copyright (c) 2002-2012, Jouni Malinen <j@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 *vht_capabilities;
37 	const u8 *vht_operation;
38 	const u8 *vendor_ht_cap;
39 	const u8 *p2p;
40 	const u8 *wfd;
41 	const u8 *link_id;
42 	const u8 *interworking;
43 	const u8 *hs20;
44 	const u8 *ext_capab;
45 	const u8 *bss_max_idle_period;
46 	const u8 *ssid_list;
47 
48 	u8 ssid_len;
49 	u8 supp_rates_len;
50 	u8 fh_params_len;
51 	u8 ds_params_len;
52 	u8 cf_params_len;
53 	u8 tim_len;
54 	u8 ibss_params_len;
55 	u8 challenge_len;
56 	u8 erp_info_len;
57 	u8 ext_supp_rates_len;
58 	u8 wpa_ie_len;
59 	u8 rsn_ie_len;
60 	u8 wmm_len; /* 7 = WMM Information; 24 = WMM Parameter */
61 	u8 wmm_tspec_len;
62 	u8 wps_ie_len;
63 	u8 power_cap_len;
64 	u8 supp_channels_len;
65 	u8 mdie_len;
66 	u8 ftie_len;
67 	u8 timeout_int_len;
68 	u8 ht_capabilities_len;
69 	u8 ht_operation_len;
70 	u8 vht_capabilities_len;
71 	u8 vht_operation_len;
72 	u8 vendor_ht_cap_len;
73 	u8 p2p_len;
74 	u8 wfd_len;
75 	u8 interworking_len;
76 	u8 hs20_len;
77 	u8 ext_capab_len;
78 	u8 ssid_list_len;
79 };
80 
81 typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
82 
83 ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
84 				struct ieee802_11_elems *elems,
85 				int show_errors);
86 int ieee802_11_ie_count(const u8 *ies, size_t ies_len);
87 struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
88 					    u32 oui_type);
89 struct ieee80211_hdr;
90 const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len);
91 
92 struct hostapd_wmm_ac_params {
93 	int cwmin;
94 	int cwmax;
95 	int aifs;
96 	int txop_limit; /* in units of 32us */
97 	int admission_control_mandatory;
98 };
99 
100 int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
101 			  const char *name, const char *val);
102 enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel);
103 
104 int supp_rates_11b_only(struct ieee802_11_elems *elems);
105 
106 #endif /* IEEE802_11_COMMON_H */
107