wpa_i.h revision 324698
1/* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2015, 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 unsigned int msg_3_of_4_ok:1; 27 u8 snonce[WPA_NONCE_LEN]; 28 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */ 29 int renew_snonce; 30 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN]; 31 int rx_replay_counter_set; 32 u8 request_counter[WPA_REPLAY_COUNTER_LEN]; 33 struct wpa_gtk gtk; 34 struct wpa_gtk gtk_wnm_sleep; 35#ifdef CONFIG_IEEE80211W 36 struct wpa_igtk igtk; 37 struct wpa_igtk igtk_wnm_sleep; 38#endif /* CONFIG_IEEE80211W */ 39 40 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */ 41 42 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */ 43 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */ 44 struct dl_list pmksa_candidates; 45 46 struct l2_packet_data *l2_preauth; 47 struct l2_packet_data *l2_preauth_br; 48 struct l2_packet_data *l2_tdls; 49 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or 50 * 00:00:00:00:00:00 if no pre-auth is 51 * in progress */ 52 struct eapol_sm *preauth_eapol; 53 54 struct wpa_sm_ctx *ctx; 55 56 void *scard_ctx; /* context for smartcard callbacks */ 57 int fast_reauth; /* whether EAP fast re-authentication is enabled */ 58 59 void *network_ctx; 60 int peerkey_enabled; 61 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */ 62 int proactive_key_caching; 63 int eap_workaround; 64 void *eap_conf_ctx; 65 u8 ssid[32]; 66 size_t ssid_len; 67 int wpa_ptk_rekey; 68 int p2p; 69 70 u8 own_addr[ETH_ALEN]; 71 const char *ifname; 72 const char *bridge_ifname; 73 u8 bssid[ETH_ALEN]; 74 75 unsigned int dot11RSNAConfigPMKLifetime; 76 unsigned int dot11RSNAConfigPMKReauthThreshold; 77 unsigned int dot11RSNAConfigSATimeout; 78 79 unsigned int dot11RSNA4WayHandshakeFailures; 80 81 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */ 82 unsigned int proto; 83 unsigned int pairwise_cipher; 84 unsigned int group_cipher; 85 unsigned int key_mgmt; 86 unsigned int mgmt_group_cipher; 87 88 int rsn_enabled; /* Whether RSN is enabled in configuration */ 89 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */ 90 91 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */ 92 size_t assoc_wpa_ie_len; 93 u8 *ap_wpa_ie, *ap_rsn_ie; 94 size_t ap_wpa_ie_len, ap_rsn_ie_len; 95 96#ifdef CONFIG_PEERKEY 97 struct wpa_peerkey *peerkey; 98#endif /* CONFIG_PEERKEY */ 99#ifdef CONFIG_TDLS 100 struct wpa_tdls_peer *tdls; 101 int tdls_prohibited; 102 int tdls_chan_switch_prohibited; 103 int tdls_disabled; 104 105 /* The driver supports TDLS */ 106 int tdls_supported; 107 108 /* 109 * The driver requires explicit discovery/setup/teardown frames sent 110 * to it via tdls_mgmt. 111 */ 112 int tdls_external_setup; 113 114 /* The driver supports TDLS channel switching */ 115 int tdls_chan_switch; 116#endif /* CONFIG_TDLS */ 117 118#ifdef CONFIG_IEEE80211R 119 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 120 size_t xxkey_len; 121 u8 pmk_r0[PMK_LEN]; 122 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 123 u8 pmk_r1[PMK_LEN]; 124 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 125 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 126 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 127 size_t r0kh_id_len; 128 u8 r1kh_id[FT_R1KH_ID_LEN]; 129 int ft_completed; 130 int ft_reassoc_completed; 131 int over_the_ds_in_progress; 132 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 133 int set_ptk_after_assoc; 134 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 135 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 136 size_t assoc_resp_ies_len; 137#endif /* CONFIG_IEEE80211R */ 138 139#ifdef CONFIG_P2P 140 u8 p2p_ip_addr[3 * 4]; 141#endif /* CONFIG_P2P */ 142}; 143 144 145static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 146{ 147 WPA_ASSERT(sm->ctx->set_state); 148 sm->ctx->set_state(sm->ctx->ctx, state); 149} 150 151static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 152{ 153 WPA_ASSERT(sm->ctx->get_state); 154 return sm->ctx->get_state(sm->ctx->ctx); 155} 156 157static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 158{ 159 WPA_ASSERT(sm->ctx->deauthenticate); 160 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 161} 162 163static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 164 const u8 *addr, int key_idx, int set_tx, 165 const u8 *seq, size_t seq_len, 166 const u8 *key, size_t key_len) 167{ 168 WPA_ASSERT(sm->ctx->set_key); 169 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 170 seq, seq_len, key, key_len); 171} 172 173static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 174{ 175 WPA_ASSERT(sm->ctx->get_network_ctx); 176 return sm->ctx->get_network_ctx(sm->ctx->ctx); 177} 178 179static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 180{ 181 WPA_ASSERT(sm->ctx->get_bssid); 182 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 183} 184 185static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 186 u16 proto, const u8 *buf, size_t len) 187{ 188 WPA_ASSERT(sm->ctx->ether_send); 189 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 190} 191 192static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 193{ 194 WPA_ASSERT(sm->ctx->get_beacon_ie); 195 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 196} 197 198static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 199{ 200 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 201 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 202} 203 204static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 205 const void *data, u16 data_len, 206 size_t *msg_len, void **data_pos) 207{ 208 WPA_ASSERT(sm->ctx->alloc_eapol); 209 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 210 msg_len, data_pos); 211} 212 213static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 214 const u8 *pmkid) 215{ 216 WPA_ASSERT(sm->ctx->add_pmkid); 217 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 218} 219 220static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 221 const u8 *pmkid) 222{ 223 WPA_ASSERT(sm->ctx->remove_pmkid); 224 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 225} 226 227static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 228 int protect_type, int key_type) 229{ 230 WPA_ASSERT(sm->ctx->mlme_setprotection); 231 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 232 key_type); 233} 234 235static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 236 const u8 *ies, size_t ies_len) 237{ 238 if (sm->ctx->update_ft_ies) 239 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 240 return -1; 241} 242 243static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 244 const u8 *target_ap, 245 const u8 *ies, size_t ies_len) 246{ 247 if (sm->ctx->send_ft_action) 248 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 249 ies, ies_len); 250 return -1; 251} 252 253static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 254 const u8 *target_ap) 255{ 256 if (sm->ctx->mark_authenticated) 257 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 258 return -1; 259} 260 261static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 262{ 263 if (!sm->ctx->set_rekey_offload) 264 return; 265 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len, 266 sm->ptk.kck, sm->ptk.kck_len, 267 sm->rx_replay_counter); 268} 269 270#ifdef CONFIG_TDLS 271static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 272 int *tdls_supported, 273 int *tdls_ext_setup, 274 int *tdls_chan_switch) 275{ 276 if (sm->ctx->tdls_get_capa) 277 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 278 tdls_ext_setup, tdls_chan_switch); 279 return -1; 280} 281 282static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 283 u8 action_code, u8 dialog_token, 284 u16 status_code, u32 peer_capab, 285 int initiator, const u8 *buf, 286 size_t len) 287{ 288 if (sm->ctx->send_tdls_mgmt) 289 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 290 dialog_token, status_code, 291 peer_capab, initiator, buf, 292 len); 293 return -1; 294} 295 296static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 297 const u8 *peer) 298{ 299 if (sm->ctx->tdls_oper) 300 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 301 return -1; 302} 303 304static inline int 305wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 306 u16 aid, u16 capability, const u8 *supp_rates, 307 size_t supp_rates_len, 308 const struct ieee80211_ht_capabilities *ht_capab, 309 const struct ieee80211_vht_capabilities *vht_capab, 310 u8 qosinfo, int wmm, const u8 *ext_capab, 311 size_t ext_capab_len, const u8 *supp_channels, 312 size_t supp_channels_len, const u8 *supp_oper_classes, 313 size_t supp_oper_classes_len) 314{ 315 if (sm->ctx->tdls_peer_addset) 316 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 317 aid, capability, supp_rates, 318 supp_rates_len, ht_capab, 319 vht_capab, qosinfo, wmm, 320 ext_capab, ext_capab_len, 321 supp_channels, 322 supp_channels_len, 323 supp_oper_classes, 324 supp_oper_classes_len); 325 return -1; 326} 327 328static inline int 329wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 330 u8 oper_class, 331 const struct hostapd_freq_params *freq_params) 332{ 333 if (sm->ctx->tdls_enable_channel_switch) 334 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 335 oper_class, 336 freq_params); 337 return -1; 338} 339 340static inline int 341wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 342{ 343 if (sm->ctx->tdls_disable_channel_switch) 344 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 345 return -1; 346} 347#endif /* CONFIG_TDLS */ 348 349static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 350 const u8 *pmk, size_t pmk_len) 351{ 352 if (!sm->proactive_key_caching) 353 return 0; 354 if (!sm->ctx->key_mgmt_set_pmk) 355 return -1; 356 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 357} 358 359void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, size_t kck_len, 360 int ver, const u8 *dest, u16 proto, 361 u8 *msg, size_t msg_len, u8 *key_mic); 362int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 363 const struct wpa_eapol_key *key, 364 int ver, const u8 *nonce, 365 const u8 *wpa_ie, size_t wpa_ie_len, 366 struct wpa_ptk *ptk); 367int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 368 const struct wpa_eapol_key *key, 369 u16 ver, u16 key_info, 370 struct wpa_ptk *ptk); 371 372int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 373 const struct wpa_eapol_key *key, struct wpa_ptk *ptk); 374 375void wpa_tdls_assoc(struct wpa_sm *sm); 376void wpa_tdls_disassoc(struct wpa_sm *sm); 377 378#endif /* WPA_I_H */ 379