ieee802_11_common.h revision 289549 
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#define MAX_NOF_MB_IES_SUPPORTED 5
13
14struct mb_ies_info {
15	struct {
16		const u8 *ie;
17		u8 ie_len;
18	} ies[MAX_NOF_MB_IES_SUPPORTED];
19	u8 nof_ies;
20};
21
22/* Parsed Information Elements */
23struct ieee802_11_elems {
24	const u8 *ssid;
25	const u8 *supp_rates;
26	const u8 *ds_params;
27	const u8 *challenge;
28	const u8 *erp_info;
29	const u8 *ext_supp_rates;
30	const u8 *wpa_ie;
31	const u8 *rsn_ie;
32	const u8 *wmm; /* WMM Information or Parameter Element */
33	const u8 *wmm_tspec;
34	const u8 *wps_ie;
35	const u8 *supp_channels;
36	const u8 *mdie;
37	const u8 *ftie;
38	const u8 *timeout_int;
39	const u8 *ht_capabilities;
40	const u8 *ht_operation;
41	const u8 *mesh_config;
42	const u8 *mesh_id;
43	const u8 *peer_mgmt;
44	const u8 *vht_capabilities;
45	const u8 *vht_operation;
46	const u8 *vht_opmode_notif;
47	const u8 *vendor_ht_cap;
48	const u8 *vendor_vht;
49	const u8 *p2p;
50	const u8 *wfd;
51	const u8 *link_id;
52	const u8 *interworking;
53	const u8 *qos_map_set;
54	const u8 *hs20;
55	const u8 *ext_capab;
56	const u8 *bss_max_idle_period;
57	const u8 *ssid_list;
58	const u8 *osen;
59	const u8 *ampe;
60	const u8 *mic;
61	const u8 *pref_freq_list;
62
63	u8 ssid_len;
64	u8 supp_rates_len;
65	u8 challenge_len;
66	u8 ext_supp_rates_len;
67	u8 wpa_ie_len;
68	u8 rsn_ie_len;
69	u8 wmm_len; /* 7 = WMM Information; 24 = WMM Parameter */
70	u8 wmm_tspec_len;
71	u8 wps_ie_len;
72	u8 supp_channels_len;
73	u8 mdie_len;
74	u8 ftie_len;
75	u8 mesh_config_len;
76	u8 mesh_id_len;
77	u8 peer_mgmt_len;
78	u8 vendor_ht_cap_len;
79	u8 vendor_vht_len;
80	u8 p2p_len;
81	u8 wfd_len;
82	u8 interworking_len;
83	u8 qos_map_set_len;
84	u8 hs20_len;
85	u8 ext_capab_len;
86	u8 ssid_list_len;
87	u8 osen_len;
88	u8 ampe_len;
89	u8 mic_len;
90	u8 pref_freq_list_len;
91	struct mb_ies_info mb_ies;
92};
93
94typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
95
96ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
97				struct ieee802_11_elems *elems,
98				int show_errors);
99int ieee802_11_ie_count(const u8 *ies, size_t ies_len);
100struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
101					    u32 oui_type);
102struct ieee80211_hdr;
103const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len);
104
105struct hostapd_wmm_ac_params {
106	int cwmin;
107	int cwmax;
108	int aifs;
109	int txop_limit; /* in units of 32us */
110	int admission_control_mandatory;
111};
112
113int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
114			  const char *name, const char *val);
115enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel);
116int ieee80211_chan_to_freq(const char *country, u8 op_class, u8 chan);
117enum hostapd_hw_mode ieee80211_freq_to_channel_ext(unsigned int freq,
118						   int sec_channel, int vht,
119						   u8 *op_class, u8 *channel);
120int ieee80211_is_dfs(int freq);
121
122int supp_rates_11b_only(struct ieee802_11_elems *elems);
123int mb_ies_info_by_ies(struct mb_ies_info *info, const u8 *ies_buf,
124		       size_t ies_len);
125struct wpabuf * mb_ies_by_info(struct mb_ies_info *info);
126
127const char * fc2str(u16 fc);
128#endif /* IEEE802_11_COMMON_H */
129