1 /* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2010, 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 WPA_I_H 10 #define WPA_I_H 11 12 #include "utils/list.h" 13 14 struct wpa_peerkey; 15 struct wpa_tdls_peer; 16 struct wpa_eapol_key; 17 18 /** 19 * struct wpa_sm - Internal WPA state machine data 20 */ 21 struct 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_disabled; 96 97 /* The driver supports TDLS */ 98 int tdls_supported; 99 100 /* 101 * The driver requires explicit discovery/setup/teardown frames sent 102 * to it via tdls_mgmt. 103 */ 104 int tdls_external_setup; 105 #endif /* CONFIG_TDLS */ 106 107 #ifdef CONFIG_IEEE80211R 108 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 109 size_t xxkey_len; 110 u8 pmk_r0[PMK_LEN]; 111 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 112 u8 pmk_r1[PMK_LEN]; 113 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 114 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 115 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 116 size_t r0kh_id_len; 117 u8 r1kh_id[FT_R1KH_ID_LEN]; 118 int ft_completed; 119 int over_the_ds_in_progress; 120 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 121 int set_ptk_after_assoc; 122 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 123 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 124 size_t assoc_resp_ies_len; 125 #endif /* CONFIG_IEEE80211R */ 126 127 #ifdef CONFIG_P2P 128 u8 p2p_ip_addr[3 * 4]; 129 #endif /* CONFIG_P2P */ 130 }; 131 132 133 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 134 { 135 WPA_ASSERT(sm->ctx->set_state); 136 sm->ctx->set_state(sm->ctx->ctx, state); 137 } 138 139 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 140 { 141 WPA_ASSERT(sm->ctx->get_state); 142 return sm->ctx->get_state(sm->ctx->ctx); 143 } 144 145 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 146 { 147 WPA_ASSERT(sm->ctx->deauthenticate); 148 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 149 } 150 151 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 152 const u8 *addr, int key_idx, int set_tx, 153 const u8 *seq, size_t seq_len, 154 const u8 *key, size_t key_len) 155 { 156 WPA_ASSERT(sm->ctx->set_key); 157 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 158 seq, seq_len, key, key_len); 159 } 160 161 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 162 { 163 WPA_ASSERT(sm->ctx->get_network_ctx); 164 return sm->ctx->get_network_ctx(sm->ctx->ctx); 165 } 166 167 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 168 { 169 WPA_ASSERT(sm->ctx->get_bssid); 170 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 171 } 172 173 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 174 u16 proto, const u8 *buf, size_t len) 175 { 176 WPA_ASSERT(sm->ctx->ether_send); 177 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 178 } 179 180 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 181 { 182 WPA_ASSERT(sm->ctx->get_beacon_ie); 183 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 184 } 185 186 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 187 { 188 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 189 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 190 } 191 192 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 193 const void *data, u16 data_len, 194 size_t *msg_len, void **data_pos) 195 { 196 WPA_ASSERT(sm->ctx->alloc_eapol); 197 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 198 msg_len, data_pos); 199 } 200 201 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 202 const u8 *pmkid) 203 { 204 WPA_ASSERT(sm->ctx->add_pmkid); 205 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 206 } 207 208 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 209 const u8 *pmkid) 210 { 211 WPA_ASSERT(sm->ctx->remove_pmkid); 212 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 213 } 214 215 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 216 int protect_type, int key_type) 217 { 218 WPA_ASSERT(sm->ctx->mlme_setprotection); 219 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 220 key_type); 221 } 222 223 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 224 const u8 *ies, size_t ies_len) 225 { 226 if (sm->ctx->update_ft_ies) 227 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 228 return -1; 229 } 230 231 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 232 const u8 *target_ap, 233 const u8 *ies, size_t ies_len) 234 { 235 if (sm->ctx->send_ft_action) 236 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 237 ies, ies_len); 238 return -1; 239 } 240 241 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 242 const u8 *target_ap) 243 { 244 if (sm->ctx->mark_authenticated) 245 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 246 return -1; 247 } 248 249 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 250 { 251 if (!sm->ctx->set_rekey_offload) 252 return; 253 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, 254 sm->ptk.kck, sm->rx_replay_counter); 255 } 256 257 #ifdef CONFIG_TDLS 258 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 259 int *tdls_supported, 260 int *tdls_ext_setup) 261 { 262 if (sm->ctx->tdls_get_capa) 263 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 264 tdls_ext_setup); 265 return -1; 266 } 267 268 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 269 u8 action_code, u8 dialog_token, 270 u16 status_code, u32 peer_capab, 271 const u8 *buf, size_t len) 272 { 273 if (sm->ctx->send_tdls_mgmt) 274 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 275 dialog_token, status_code, 276 peer_capab, buf, len); 277 return -1; 278 } 279 280 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 281 const u8 *peer) 282 { 283 if (sm->ctx->tdls_oper) 284 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 285 return -1; 286 } 287 288 static inline int 289 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 290 u16 aid, u16 capability, const u8 *supp_rates, 291 size_t supp_rates_len, 292 const struct ieee80211_ht_capabilities *ht_capab, 293 const struct ieee80211_vht_capabilities *vht_capab, 294 u8 qosinfo, const u8 *ext_capab, size_t ext_capab_len, 295 const u8 *supp_channels, size_t supp_channels_len, 296 const u8 *supp_oper_classes, 297 size_t supp_oper_classes_len) 298 { 299 if (sm->ctx->tdls_peer_addset) 300 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 301 aid, capability, supp_rates, 302 supp_rates_len, ht_capab, 303 vht_capab, qosinfo, 304 ext_capab, ext_capab_len, 305 supp_channels, 306 supp_channels_len, 307 supp_oper_classes, 308 supp_oper_classes_len); 309 return -1; 310 } 311 #endif /* CONFIG_TDLS */ 312 313 void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, 314 int ver, const u8 *dest, u16 proto, 315 u8 *msg, size_t msg_len, u8 *key_mic); 316 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 317 const struct wpa_eapol_key *key, 318 int ver, const u8 *nonce, 319 const u8 *wpa_ie, size_t wpa_ie_len, 320 struct wpa_ptk *ptk); 321 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 322 const struct wpa_eapol_key *key, 323 u16 ver, u16 key_info, 324 struct wpa_ptk *ptk); 325 326 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 327 const struct wpa_eapol_key *key, 328 struct wpa_ptk *ptk, size_t ptk_len); 329 330 void wpa_tdls_assoc(struct wpa_sm *sm); 331 void wpa_tdls_disassoc(struct wpa_sm *sm); 332 333 #endif /* WPA_I_H */ 334
