src/common/ieee802_11_common.h

   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 #include "defs.h"
  13
  14 struct hostapd_hw_modes;
  15
  16 #define MAX_NOF_MB_IES_SUPPORTED 5
  17
  18 struct mb_ies_info {
  19         struct {
  20                 const u8 *ie;
  21                 u8 ie_len;
  22         } ies[MAX_NOF_MB_IES_SUPPORTED];
  23         u8 nof_ies;
  24 };
  25
  26 /* Parsed Information Elements */
  27 struct ieee802_11_elems {
  28         const u8 *ssid;
  29         const u8 *supp_rates;
  30         const u8 *ds_params;
  31         const u8 *challenge;
  32         const u8 *erp_info;
  33         const u8 *ext_supp_rates;
  34         const u8 *wpa_ie;
  35         const u8 *rsn_ie;
  36         const u8 *wmm; /* WMM Information or Parameter Element */
  37         const u8 *wmm_tspec;
  38         const u8 *wps_ie;
  39         const u8 *supp_channels;
  40         const u8 *mdie;
  41         const u8 *ftie;
  42         const u8 *timeout_int;
  43         const u8 *ht_capabilities;
  44         const u8 *ht_operation;
  45         const u8 *mesh_config;
  46         const u8 *mesh_id;
  47         const u8 *peer_mgmt;
  48         const u8 *vht_capabilities;
  49         const u8 *vht_operation;
  50         const u8 *vht_opmode_notif;
  51         const u8 *vendor_ht_cap;
  52         const u8 *vendor_vht;
  53         const u8 *p2p;
  54         const u8 *wfd;
  55         const u8 *link_id;
  56         const u8 *interworking;
  57         const u8 *qos_map_set;
  58         const u8 *hs20;
  59         const u8 *ext_capab;
  60         const u8 *bss_max_idle_period;
  61         const u8 *ssid_list;
  62         const u8 *osen;
  63         const u8 *mbo;
  64         const u8 *ampe;
  65         const u8 *mic;
  66         const u8 *pref_freq_list;
  67         const u8 *supp_op_classes;
  68         const u8 *rrm_enabled;
  69         const u8 *cag_number;
  70         const u8 *ap_csn;
  71         const u8 *fils_indic;
  72         const u8 *dils;
  73         const u8 *assoc_delay_info;
  74         const u8 *fils_req_params;
  75         const u8 *fils_key_confirm;
  76         const u8 *fils_session;
  77         const u8 *fils_hlp;
  78         const u8 *fils_ip_addr_assign;
  79         const u8 *key_delivery;
  80         const u8 *fils_wrapped_data;
  81         const u8 *fils_pk;
  82         const u8 *fils_nonce;
  83         const u8 *owe_dh;
  84         const u8 *power_capab;
  85         const u8 *roaming_cons_sel;
  86         const u8 *password_id;
  87
  88         u8 ssid_len;
  89         u8 supp_rates_len;
  90         u8 challenge_len;
  91         u8 ext_supp_rates_len;
  92         u8 wpa_ie_len;
  93         u8 rsn_ie_len;
  94         u8 wmm_len; /* 7 = WMM Information; 24 = WMM Parameter */
  95         u8 wmm_tspec_len;
  96         u8 wps_ie_len;
  97         u8 supp_channels_len;
  98         u8 mdie_len;
  99         u8 ftie_len;
 100         u8 mesh_config_len;
 101         u8 mesh_id_len;
 102         u8 peer_mgmt_len;
 103         u8 vendor_ht_cap_len;
 104         u8 vendor_vht_len;
 105         u8 p2p_len;
 106         u8 wfd_len;
 107         u8 interworking_len;
 108         u8 qos_map_set_len;
 109         u8 hs20_len;
 110         u8 ext_capab_len;
 111         u8 ssid_list_len;
 112         u8 osen_len;
 113         u8 mbo_len;
 114         u8 ampe_len;
 115         u8 mic_len;
 116         u8 pref_freq_list_len;
 117         u8 supp_op_classes_len;
 118         u8 rrm_enabled_len;
 119         u8 cag_number_len;
 120         u8 fils_indic_len;
 121         u8 dils_len;
 122         u8 fils_req_params_len;
 123         u8 fils_key_confirm_len;
 124         u8 fils_hlp_len;
 125         u8 fils_ip_addr_assign_len;
 126         u8 key_delivery_len;
 127         u8 fils_wrapped_data_len;
 128         u8 fils_pk_len;
 129         u8 owe_dh_len;
 130         u8 power_capab_len;
 131         u8 roaming_cons_sel_len;
 132         u8 password_id_len;
 133
 134         struct mb_ies_info mb_ies;
 135 };
 136
 137 typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
 138
 139 ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
 140                                 struct ieee802_11_elems *elems,
 141                                 int show_errors);
 142 int ieee802_11_ie_count(const u8 *ies, size_t ies_len);
 143 struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
 144                                             u32 oui_type);
 145 struct ieee80211_hdr;
 146 const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len);
 147
 148 struct hostapd_wmm_ac_params {
 149         int cwmin;
 150         int cwmax;
 151         int aifs;
 152         int txop_limit; /* in units of 32us */
 153         int admission_control_mandatory;
 154 };
 155
 156 int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
 157                           const char *name, const char *val);
 158 enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel);
 159 int ieee80211_chan_to_freq(const char *country, u8 op_class, u8 chan);
 160 enum hostapd_hw_mode ieee80211_freq_to_channel_ext(unsigned int freq,
 161                                                    int sec_channel, int vht,
 162                                                    u8 *op_class, u8 *channel);
 163 int ieee80211_is_dfs(int freq, const struct hostapd_hw_modes *modes,
 164                      u16 num_modes);
 165 enum phy_type ieee80211_get_phy_type(int freq, int ht, int vht);
 166
 167 int supp_rates_11b_only(struct ieee802_11_elems *elems);
 168 int mb_ies_info_by_ies(struct mb_ies_info *info, const u8 *ies_buf,
 169                        size_t ies_len);
 170 struct wpabuf * mb_ies_by_info(struct mb_ies_info *info);
 171
 172 const char * fc2str(u16 fc);
 173
 174 struct oper_class_map {
 175         enum hostapd_hw_mode mode;
 176         u8 op_class;
 177         u8 min_chan;
 178         u8 max_chan;
 179         u8 inc;
 180         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
 181         enum { P2P_SUPP, NO_P2P_SUPP } p2p;
 182 };
 183
 184 extern const struct oper_class_map global_op_class[];
 185 extern size_t global_op_class_size;
 186
 187 const u8 * get_ie(const u8 *ies, size_t len, u8 eid);
 188 const u8 * get_ie_ext(const u8 *ies, size_t len, u8 ext);
 189
 190 size_t mbo_add_ie(u8 *buf, size_t len, const u8 *attr, size_t attr_len);
 191
 192 struct country_op_class {
 193         u8 country_op_class;
 194         u8 global_op_class;
 195 };
 196
 197 u8 country_to_global_op_class(const char *country, u8 op_class);
 198
 199 const struct oper_class_map * get_oper_class(const char *country, u8 op_class);
 200
 201 int ieee802_11_parse_candidate_list(const char *pos, u8 *nei_rep,
 202                                     size_t nei_rep_len);
 203
 204 #endif /* IEEE802_11_COMMON_H */