wpa_i.h revision 6c0da2bb83f6915d8260912362692d1a742e057b
1/* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2010, 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 WPA_I_H 10#define WPA_I_H 11 12#include "utils/list.h" 13 14struct wpa_peerkey; 15struct wpa_tdls_peer; 16struct wpa_eapol_key; 17 18/** 19 * struct wpa_sm - Internal WPA state machine data 20 */ 21struct wpa_sm { 22 u8 pmk[PMK_LEN]; 23 size_t pmk_len; 24 struct wpa_ptk ptk, tptk; 25 int ptk_set, tptk_set; 26 u8 snonce[WPA_NONCE_LEN]; 27 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */ 28 int renew_snonce; 29 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN]; 30 int rx_replay_counter_set; 31 u8 request_counter[WPA_REPLAY_COUNTER_LEN]; 32 33 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */ 34 35 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */ 36 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */ 37 struct dl_list pmksa_candidates; 38 39 struct l2_packet_data *l2_preauth; 40 struct l2_packet_data *l2_preauth_br; 41 struct l2_packet_data *l2_tdls; 42 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or 43 * 00:00:00:00:00:00 if no pre-auth is 44 * in progress */ 45 struct eapol_sm *preauth_eapol; 46 47 struct wpa_sm_ctx *ctx; 48 49 void *scard_ctx; /* context for smartcard callbacks */ 50 int fast_reauth; /* whether EAP fast re-authentication is enabled */ 51 52 void *network_ctx; 53 int peerkey_enabled; 54 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */ 55 int proactive_key_caching; 56 int eap_workaround; 57 void *eap_conf_ctx; 58 u8 ssid[32]; 59 size_t ssid_len; 60 int wpa_ptk_rekey; 61 int p2p; 62 63 u8 own_addr[ETH_ALEN]; 64 const char *ifname; 65 const char *bridge_ifname; 66 u8 bssid[ETH_ALEN]; 67 68 unsigned int dot11RSNAConfigPMKLifetime; 69 unsigned int dot11RSNAConfigPMKReauthThreshold; 70 unsigned int dot11RSNAConfigSATimeout; 71 72 unsigned int dot11RSNA4WayHandshakeFailures; 73 74 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */ 75 unsigned int proto; 76 unsigned int pairwise_cipher; 77 unsigned int group_cipher; 78 unsigned int key_mgmt; 79 unsigned int mgmt_group_cipher; 80 81 int rsn_enabled; /* Whether RSN is enabled in configuration */ 82 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */ 83 84 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */ 85 size_t assoc_wpa_ie_len; 86 u8 *ap_wpa_ie, *ap_rsn_ie; 87 size_t ap_wpa_ie_len, ap_rsn_ie_len; 88 89#ifdef CONFIG_PEERKEY 90 struct wpa_peerkey *peerkey; 91#endif /* CONFIG_PEERKEY */ 92#ifdef CONFIG_TDLS 93 struct wpa_tdls_peer *tdls; 94 int tdls_prohibited; 95 int tdls_chan_switch_prohibited; 96 int tdls_disabled; 97 98 /* The driver supports TDLS */ 99 int tdls_supported; 100 101 /* 102 * The driver requires explicit discovery/setup/teardown frames sent 103 * to it via tdls_mgmt. 104 */ 105 int tdls_external_setup; 106 107 /* The driver supports TDLS channel switching */ 108 int tdls_chan_switch; 109#endif /* CONFIG_TDLS */ 110 111#ifdef CONFIG_IEEE80211R 112 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 113 size_t xxkey_len; 114 u8 pmk_r0[PMK_LEN]; 115 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 116 u8 pmk_r1[PMK_LEN]; 117 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 118 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 119 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 120 size_t r0kh_id_len; 121 u8 r1kh_id[FT_R1KH_ID_LEN]; 122 int ft_completed; 123 int over_the_ds_in_progress; 124 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 125 int set_ptk_after_assoc; 126 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 127 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 128 size_t assoc_resp_ies_len; 129#endif /* CONFIG_IEEE80211R */ 130 131#ifdef CONFIG_P2P 132 u8 p2p_ip_addr[3 * 4]; 133#endif /* CONFIG_P2P */ 134}; 135 136 137static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 138{ 139 WPA_ASSERT(sm->ctx->set_state); 140 sm->ctx->set_state(sm->ctx->ctx, state); 141} 142 143static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 144{ 145 WPA_ASSERT(sm->ctx->get_state); 146 return sm->ctx->get_state(sm->ctx->ctx); 147} 148 149static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 150{ 151 WPA_ASSERT(sm->ctx->deauthenticate); 152 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 153} 154 155static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 156 const u8 *addr, int key_idx, int set_tx, 157 const u8 *seq, size_t seq_len, 158 const u8 *key, size_t key_len) 159{ 160 WPA_ASSERT(sm->ctx->set_key); 161 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 162 seq, seq_len, key, key_len); 163} 164 165static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 166{ 167 WPA_ASSERT(sm->ctx->get_network_ctx); 168 return sm->ctx->get_network_ctx(sm->ctx->ctx); 169} 170 171static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 172{ 173 WPA_ASSERT(sm->ctx->get_bssid); 174 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 175} 176 177static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 178 u16 proto, const u8 *buf, size_t len) 179{ 180 WPA_ASSERT(sm->ctx->ether_send); 181 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 182} 183 184static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 185{ 186 WPA_ASSERT(sm->ctx->get_beacon_ie); 187 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 188} 189 190static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 191{ 192 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 193 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 194} 195 196static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 197 const void *data, u16 data_len, 198 size_t *msg_len, void **data_pos) 199{ 200 WPA_ASSERT(sm->ctx->alloc_eapol); 201 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 202 msg_len, data_pos); 203} 204 205static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 206 const u8 *pmkid) 207{ 208 WPA_ASSERT(sm->ctx->add_pmkid); 209 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 210} 211 212static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 213 const u8 *pmkid) 214{ 215 WPA_ASSERT(sm->ctx->remove_pmkid); 216 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 217} 218 219static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 220 int protect_type, int key_type) 221{ 222 WPA_ASSERT(sm->ctx->mlme_setprotection); 223 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 224 key_type); 225} 226 227static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 228 const u8 *ies, size_t ies_len) 229{ 230 if (sm->ctx->update_ft_ies) 231 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 232 return -1; 233} 234 235static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 236 const u8 *target_ap, 237 const u8 *ies, size_t ies_len) 238{ 239 if (sm->ctx->send_ft_action) 240 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 241 ies, ies_len); 242 return -1; 243} 244 245static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 246 const u8 *target_ap) 247{ 248 if (sm->ctx->mark_authenticated) 249 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 250 return -1; 251} 252 253static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 254{ 255 if (!sm->ctx->set_rekey_offload) 256 return; 257 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, 258 sm->ptk.kck, sm->rx_replay_counter); 259} 260 261#ifdef CONFIG_TDLS 262static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 263 int *tdls_supported, 264 int *tdls_ext_setup, 265 int *tdls_chan_switch) 266{ 267 if (sm->ctx->tdls_get_capa) 268 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 269 tdls_ext_setup, tdls_chan_switch); 270 return -1; 271} 272 273static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 274 u8 action_code, u8 dialog_token, 275 u16 status_code, u32 peer_capab, 276 int initiator, const u8 *buf, 277 size_t len) 278{ 279 if (sm->ctx->send_tdls_mgmt) 280 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 281 dialog_token, status_code, 282 peer_capab, initiator, buf, 283 len); 284 return -1; 285} 286 287static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 288 const u8 *peer) 289{ 290 if (sm->ctx->tdls_oper) 291 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 292 return -1; 293} 294 295static inline int 296wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 297 u16 aid, u16 capability, const u8 *supp_rates, 298 size_t supp_rates_len, 299 const struct ieee80211_ht_capabilities *ht_capab, 300 const struct ieee80211_vht_capabilities *vht_capab, 301 u8 qosinfo, int wmm, const u8 *ext_capab, 302 size_t ext_capab_len, const u8 *supp_channels, 303 size_t supp_channels_len, const u8 *supp_oper_classes, 304 size_t supp_oper_classes_len) 305{ 306 if (sm->ctx->tdls_peer_addset) 307 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 308 aid, capability, supp_rates, 309 supp_rates_len, ht_capab, 310 vht_capab, qosinfo, wmm, 311 ext_capab, ext_capab_len, 312 supp_channels, 313 supp_channels_len, 314 supp_oper_classes, 315 supp_oper_classes_len); 316 return -1; 317} 318 319static inline int 320wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 321 u8 oper_class, 322 const struct hostapd_freq_params *freq_params) 323{ 324 if (sm->ctx->tdls_enable_channel_switch) 325 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 326 oper_class, 327 freq_params); 328 return -1; 329} 330 331static inline int 332wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 333{ 334 if (sm->ctx->tdls_disable_channel_switch) 335 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 336 return -1; 337} 338#endif /* CONFIG_TDLS */ 339 340static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 341 const u8 *pmk, size_t pmk_len) 342{ 343 if (!sm->proactive_key_caching) 344 return 0; 345 if (!sm->ctx->key_mgmt_set_pmk) 346 return -1; 347 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 348} 349 350void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, 351 int ver, const u8 *dest, u16 proto, 352 u8 *msg, size_t msg_len, u8 *key_mic); 353int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 354 const struct wpa_eapol_key *key, 355 int ver, const u8 *nonce, 356 const u8 *wpa_ie, size_t wpa_ie_len, 357 struct wpa_ptk *ptk); 358int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 359 const struct wpa_eapol_key *key, 360 u16 ver, u16 key_info, 361 struct wpa_ptk *ptk); 362 363int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 364 const struct wpa_eapol_key *key, 365 struct wpa_ptk *ptk, size_t ptk_len); 366 367void wpa_tdls_assoc(struct wpa_sm *sm); 368void wpa_tdls_disassoc(struct wpa_sm *sm); 369 370#endif /* WPA_I_H */ 371