1 /* 2 * IEEE 802.11 Common routines 3 * Copyright (c) 2002-2019, 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 #include "defs.h" 13 #include "ieee802_11_defs.h" 14 15 struct element { 16 u8 id; 17 u8 datalen; 18 u8 data[]; 19 } STRUCT_PACKED; 20 21 struct hostapd_hw_modes; 22 23 #define MAX_NOF_MB_IES_SUPPORTED 5 24 25 struct mb_ies_info { 26 struct { 27 const u8 *ie; 28 u8 ie_len; 29 } ies[MAX_NOF_MB_IES_SUPPORTED]; 30 u8 nof_ies; 31 }; 32 33 struct multi_ap_params { 34 u8 capability; 35 u8 profile; 36 u16 vlanid; 37 }; 38 39 /* Parsed Information Elements */ 40 struct ieee802_11_elems { 41 const u8 *ssid; 42 const u8 *supp_rates; 43 const u8 *ds_params; 44 const u8 *challenge; 45 const u8 *erp_info; 46 const u8 *ext_supp_rates; 47 const u8 *wpa_ie; 48 const u8 *rsn_ie; 49 const u8 *rsnxe; 50 const u8 *wmm; /* WMM Information or Parameter Element */ 51 const u8 *wmm_tspec; 52 const u8 *wps_ie; 53 const u8 *supp_channels; 54 const u8 *mdie; 55 const u8 *ftie; 56 const u8 *timeout_int; 57 const u8 *ht_capabilities; 58 const u8 *ht_operation; 59 const u8 *mesh_config; 60 const u8 *mesh_id; 61 const u8 *peer_mgmt; 62 const u8 *vht_capabilities; 63 const u8 *vht_operation; 64 const u8 *opmode_notif; 65 const u8 *vendor_ht_cap; 66 const u8 *vendor_vht; 67 const u8 *p2p; 68 const u8 *wfd; 69 const u8 *link_id; 70 const u8 *interworking; 71 const u8 *qos_map_set; 72 const u8 *hs20; 73 const u8 *ext_capab; 74 const u8 *bss_max_idle_period; 75 const u8 *ssid_list; 76 const u8 *osen; 77 const u8 *mbo; 78 const u8 *ampe; 79 const u8 *mic; 80 const u8 *pref_freq_list; 81 const u8 *supp_op_classes; 82 const u8 *rrm_enabled; 83 const u8 *cag_number; 84 const u8 *ap_csn; 85 const u8 *fils_indic; 86 const u8 *dils; 87 const u8 *assoc_delay_info; 88 const u8 *fils_req_params; 89 const u8 *fils_key_confirm; 90 const u8 *fils_session; 91 const u8 *fils_hlp; 92 const u8 *fils_ip_addr_assign; 93 const u8 *key_delivery; 94 const u8 *wrapped_data; 95 const u8 *fils_pk; 96 const u8 *fils_nonce; 97 const u8 *owe_dh; 98 const u8 *power_capab; 99 const u8 *roaming_cons_sel; 100 const u8 *password_id; 101 const u8 *oci; 102 const u8 *multi_ap; 103 const u8 *he_capabilities; 104 const u8 *he_operation; 105 const u8 *short_ssid_list; 106 const u8 *he_6ghz_band_cap; 107 const u8 *sae_pk; 108 const u8 *s1g_capab; 109 const u8 *pasn_params; 110 const u8 *eht_capabilities; 111 const u8 *eht_operation; 112 const u8 *basic_mle; 113 const u8 *probe_req_mle; 114 const u8 *reconf_mle; 115 const u8 *tdls_mle; 116 const u8 *prior_access_mle; 117 const u8 *mbssid_known_bss; 118 const u8 *mbssid; 119 120 u8 ssid_len; 121 u8 supp_rates_len; 122 u8 challenge_len; 123 u8 ext_supp_rates_len; 124 u8 wpa_ie_len; 125 u8 rsn_ie_len; 126 u8 rsnxe_len; 127 u8 wmm_len; /* 7 = WMM Information; 24 = WMM Parameter */ 128 u8 wmm_tspec_len; 129 u8 wps_ie_len; 130 u8 supp_channels_len; 131 u8 mdie_len; 132 u8 ftie_len; 133 u8 mesh_config_len; 134 u8 mesh_id_len; 135 u8 peer_mgmt_len; 136 u8 vendor_ht_cap_len; 137 u8 vendor_vht_len; 138 u8 p2p_len; 139 u8 wfd_len; 140 u8 interworking_len; 141 u8 qos_map_set_len; 142 u8 hs20_len; 143 u8 ext_capab_len; 144 u8 ssid_list_len; 145 u8 osen_len; 146 u8 mbo_len; 147 u8 ampe_len; 148 u8 mic_len; 149 u8 pref_freq_list_len; 150 u8 supp_op_classes_len; 151 u8 rrm_enabled_len; 152 u8 cag_number_len; 153 u8 fils_indic_len; 154 u8 dils_len; 155 u8 fils_req_params_len; 156 u8 fils_key_confirm_len; 157 size_t fils_hlp_len; 158 u8 fils_ip_addr_assign_len; 159 u8 key_delivery_len; 160 size_t wrapped_data_len; 161 u8 fils_pk_len; 162 u8 owe_dh_len; 163 u8 power_capab_len; 164 u8 roaming_cons_sel_len; 165 u8 password_id_len; 166 u8 oci_len; 167 u8 multi_ap_len; 168 u8 he_capabilities_len; 169 u8 he_operation_len; 170 u8 short_ssid_list_len; 171 u8 sae_pk_len; 172 u8 pasn_params_len; 173 u8 eht_capabilities_len; 174 u8 eht_operation_len; 175 size_t basic_mle_len; 176 size_t probe_req_mle_len; 177 size_t reconf_mle_len; 178 size_t tdls_mle_len; 179 size_t prior_access_mle_len; 180 u8 mbssid_known_bss_len; 181 u8 mbssid_len; 182 183 struct mb_ies_info mb_ies; 184 185 size_t fte_defrag_len; 186 187 /* 188 * The number of fragment elements to be skipped after a known 189 * fragmented element. 190 */ 191 unsigned int num_frag_elems; 192 }; 193 194 typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes; 195 196 ParseRes ieee802_11_parse_elems(const u8 *start, size_t len, 197 struct ieee802_11_elems *elems, 198 int show_errors); 199 void ieee802_11_elems_clear_ids(struct ieee802_11_elems *elems, 200 const u8 *ids, size_t num); 201 void ieee802_11_elems_clear_ext_ids(struct ieee802_11_elems *elems, 202 const u8 *ids, size_t num); 203 ParseRes ieee802_11_parse_link_assoc_req(const u8 *start, size_t len, 204 struct ieee802_11_elems *elems, 205 struct wpabuf *mlbuf, 206 u8 link_id, bool show_errors); 207 int ieee802_11_ie_count(const u8 *ies, size_t ies_len); 208 struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len, 209 u32 oui_type); 210 struct ieee80211_hdr; 211 const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len); 212 213 struct hostapd_wmm_ac_params { 214 int cwmin; 215 int cwmax; 216 int aifs; 217 int txop_limit; /* in units of 32us */ 218 int admission_control_mandatory; 219 }; 220 221 int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[], 222 const char *name, const char *val); 223 224 struct hostapd_tx_queue_params { 225 int aifs; 226 int cwmin; 227 int cwmax; 228 int burst; /* maximum burst time in 0.1 ms, i.e., 10 = 1 ms */ 229 }; 230 231 #define NUM_TX_QUEUES 4 232 233 int hostapd_config_tx_queue(struct hostapd_tx_queue_params queue[], 234 const char *name, const char *val); 235 enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel); 236 int ieee80211_chan_to_freq(const char *country, u8 op_class, u8 chan); 237 enum hostapd_hw_mode 238 ieee80211_freq_to_channel_ext(unsigned int freq, int sec_channel, 239 enum oper_chan_width chanwidth, 240 u8 *op_class, u8 *channel); 241 int ieee80211_chaninfo_to_channel(unsigned int freq, enum chan_width chanwidth, 242 int sec_channel, u8 *op_class, u8 *channel); 243 int ieee80211_is_dfs(int freq, const struct hostapd_hw_modes *modes, 244 u16 num_modes); 245 int is_dfs_global_op_class(u8 op_class); 246 bool is_80plus_op_class(u8 op_class); 247 enum phy_type ieee80211_get_phy_type(int freq, int ht, int vht); 248 249 int supp_rates_11b_only(struct ieee802_11_elems *elems); 250 int mb_ies_info_by_ies(struct mb_ies_info *info, const u8 *ies_buf, 251 size_t ies_len); 252 struct wpabuf * mb_ies_by_info(struct mb_ies_info *info); 253 254 const char * fc2str(u16 fc); 255 const char * reason2str(u16 reason); 256 const char * status2str(u16 status); 257 258 struct oper_class_map { 259 enum hostapd_hw_mode mode; 260 u8 op_class; 261 u8 min_chan; 262 u8 max_chan; 263 u8 inc; 264 enum { BW20, BW40PLUS, BW40MINUS, BW40, BW80, BW2160, BW160, BW80P80, 265 BW320, BW4320, BW6480, BW8640} bw; 266 enum { P2P_SUPP, NO_P2P_SUPP } p2p; 267 }; 268 269 extern const struct oper_class_map global_op_class[]; 270 extern size_t global_op_class_size; 271 272 const u8 * get_ie(const u8 *ies, size_t len, u8 eid); 273 const u8 * get_ie_ext(const u8 *ies, size_t len, u8 ext); 274 const u8 * get_vendor_ie(const u8 *ies, size_t len, u32 vendor_type); 275 276 size_t mbo_add_ie(u8 *buf, size_t len, const u8 *attr, size_t attr_len); 277 278 u16 check_multi_ap_ie(const u8 *multi_ap_ie, size_t multi_ap_len, 279 struct multi_ap_params *multi_ap); 280 size_t add_multi_ap_ie(u8 *buf, size_t len, 281 const struct multi_ap_params *multi_ap); 282 283 struct country_op_class { 284 u8 country_op_class; 285 u8 global_op_class; 286 }; 287 288 u8 country_to_global_op_class(const char *country, u8 op_class); 289 290 const struct oper_class_map * get_oper_class(const char *country, u8 op_class); 291 int oper_class_bw_to_int(const struct oper_class_map *map); 292 int center_idx_to_bw_6ghz(u8 idx); 293 bool is_6ghz_freq(int freq); 294 bool is_6ghz_op_class(u8 op_class); 295 bool is_6ghz_psc_frequency(int freq); 296 int get_6ghz_sec_channel(int channel); 297 298 bool is_same_band(int freq1, int freq2); 299 #define IS_2P4GHZ(n) (n >= 2412 && n <= 2484) 300 #define IS_5GHZ(n) (n > 4000 && n < 5895) 301 302 int ieee802_11_parse_candidate_list(const char *pos, u8 *nei_rep, 303 size_t nei_rep_len); 304 305 int ieee802_11_ext_capab(const u8 *ie, unsigned int capab); 306 bool ieee802_11_rsnx_capab_len(const u8 *rsnxe, size_t rsnxe_len, 307 unsigned int capab); 308 bool ieee802_11_rsnx_capab(const u8 *rsnxe, unsigned int capab); 309 int op_class_to_bandwidth(u8 op_class); 310 enum oper_chan_width op_class_to_ch_width(u8 op_class); 311 int chwidth_freq2_to_ch_width(int chwidth, int freq2); 312 313 /* element iteration helpers */ 314 #define for_each_element(_elem, _data, _datalen) \ 315 for (_elem = (const struct element *) (_data); \ 316 (const u8 *) (_data) + (_datalen) - (const u8 *) _elem >= \ 317 (int) sizeof(*_elem) && \ 318 (const u8 *) (_data) + (_datalen) - (const u8 *) _elem >= \ 319 (int) sizeof(*_elem) + _elem->datalen; \ 320 _elem = (const struct element *) (_elem->data + _elem->datalen)) 321 322 #define for_each_element_id(element, _id, data, datalen) \ 323 for_each_element(element, data, datalen) \ 324 if (element->id == (_id)) 325 326 #define for_each_element_extid(element, extid, _data, _datalen) \ 327 for_each_element(element, _data, _datalen) \ 328 if (element->id == WLAN_EID_EXTENSION && \ 329 element->datalen > 0 && \ 330 element->data[0] == (extid)) 331 332 #define for_each_subelement(sub, element) \ 333 for_each_element(sub, (element)->data, (element)->datalen) 334 335 #define for_each_subelement_id(sub, id, element) \ 336 for_each_element_id(sub, id, (element)->data, (element)->datalen) 337 338 #define for_each_subelement_extid(sub, extid, element) \ 339 for_each_element_extid(sub, extid, (element)->data, (element)->datalen) 340 341 /** 342 * for_each_element_completed - Determine if element parsing consumed all data 343 * @element: Element pointer after for_each_element() or friends 344 * @data: Same data pointer as passed to for_each_element() or friends 345 * @datalen: Same data length as passed to for_each_element() or friends 346 * 347 * This function returns 1 if all the data was parsed or considered 348 * while walking the elements. Only use this if your for_each_element() 349 * loop cannot be broken out of, otherwise it always returns 0. 350 * 351 * If some data was malformed, this returns %false since the last parsed 352 * element will not fill the whole remaining data. 353 */ 354 static inline int for_each_element_completed(const struct element *element, 355 const void *data, size_t datalen) 356 { 357 return (const u8 *) element == (const u8 *) data + datalen; 358 } 359 360 struct ieee80211_edmg_config; 361 362 void hostapd_encode_edmg_chan(int edmg_enable, u8 edmg_channel, 363 int primary_channel, 364 struct ieee80211_edmg_config *edmg); 365 366 int ieee802_edmg_is_allowed(struct ieee80211_edmg_config allowed, 367 struct ieee80211_edmg_config requested); 368 369 struct wpabuf * ieee802_11_defrag(const u8 *data, size_t len, bool ext_elem); 370 const u8 * get_ml_ie(const u8 *ies, size_t len, u8 type); 371 const u8 * get_basic_mle_mld_addr(const u8 *buf, size_t len); 372 373 #endif /* IEEE802_11_COMMON_H */ 374
Indexes created Sun Jun 07 00:24:08 UTC 2026