wpa_i.h revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a
1/* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15#ifndef WPA_I_H 16#define WPA_I_H 17 18#include "utils/list.h" 19 20struct wpa_peerkey; 21struct wpa_tdls_peer; 22struct wpa_eapol_key; 23 24/** 25 * struct wpa_sm - Internal WPA state machine data 26 */ 27struct wpa_sm { 28 u8 pmk[PMK_LEN]; 29 size_t pmk_len; 30 struct wpa_ptk ptk, tptk; 31 int ptk_set, tptk_set; 32 u8 snonce[WPA_NONCE_LEN]; 33 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */ 34 int renew_snonce; 35 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN]; 36 int rx_replay_counter_set; 37 u8 request_counter[WPA_REPLAY_COUNTER_LEN]; 38 39 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */ 40 41 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */ 42 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */ 43 struct dl_list pmksa_candidates; 44 45 struct l2_packet_data *l2_preauth; 46 struct l2_packet_data *l2_preauth_br; 47 struct l2_packet_data *l2_tdls; 48 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or 49 * 00:00:00:00:00:00 if no pre-auth is 50 * in progress */ 51 struct eapol_sm *preauth_eapol; 52 53 struct wpa_sm_ctx *ctx; 54 55 void *scard_ctx; /* context for smartcard callbacks */ 56 int fast_reauth; /* whether EAP fast re-authentication is enabled */ 57 58 void *network_ctx; 59 int peerkey_enabled; 60 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */ 61 int proactive_key_caching; 62 int eap_workaround; 63 void *eap_conf_ctx; 64 u8 ssid[32]; 65 size_t ssid_len; 66 int wpa_ptk_rekey; 67 68 u8 own_addr[ETH_ALEN]; 69 const char *ifname; 70 const char *bridge_ifname; 71 u8 bssid[ETH_ALEN]; 72 73 unsigned int dot11RSNAConfigPMKLifetime; 74 unsigned int dot11RSNAConfigPMKReauthThreshold; 75 unsigned int dot11RSNAConfigSATimeout; 76 77 unsigned int dot11RSNA4WayHandshakeFailures; 78 79 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */ 80 unsigned int proto; 81 unsigned int pairwise_cipher; 82 unsigned int group_cipher; 83 unsigned int key_mgmt; 84 unsigned int mgmt_group_cipher; 85 86 int rsn_enabled; /* Whether RSN is enabled in configuration */ 87 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */ 88 89 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */ 90 size_t assoc_wpa_ie_len; 91 u8 *ap_wpa_ie, *ap_rsn_ie; 92 size_t ap_wpa_ie_len, ap_rsn_ie_len; 93 94#ifdef CONFIG_PEERKEY 95 struct wpa_peerkey *peerkey; 96#endif /* CONFIG_PEERKEY */ 97#ifdef CONFIG_TDLS 98 struct wpa_tdls_peer *tdls; 99 int tdls_prohibited; 100 int tdls_disabled; 101 102 /* The driver supports TDLS */ 103 int tdls_supported; 104 105 /* 106 * The driver requires explicit discovery/setup/teardown frames sent 107 * to it via tdls_mgmt. 108 */ 109 int tdls_external_setup; 110#endif /* CONFIG_TDLS */ 111 112#ifdef CONFIG_IEEE80211R 113 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 114 size_t xxkey_len; 115 u8 pmk_r0[PMK_LEN]; 116 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 117 u8 pmk_r1[PMK_LEN]; 118 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 119 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 120 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 121 size_t r0kh_id_len; 122 u8 r1kh_id[FT_R1KH_ID_LEN]; 123 int ft_completed; 124 int over_the_ds_in_progress; 125 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 126 int set_ptk_after_assoc; 127 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 128 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 129 size_t assoc_resp_ies_len; 130#endif /* CONFIG_IEEE80211R */ 131}; 132 133 134static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 135{ 136 WPA_ASSERT(sm->ctx->set_state); 137 sm->ctx->set_state(sm->ctx->ctx, state); 138} 139 140static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 141{ 142 WPA_ASSERT(sm->ctx->get_state); 143 return sm->ctx->get_state(sm->ctx->ctx); 144} 145 146static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 147{ 148 WPA_ASSERT(sm->ctx->deauthenticate); 149 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 150} 151 152static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code) 153{ 154 WPA_ASSERT(sm->ctx->disassociate); 155 sm->ctx->disassociate(sm->ctx->ctx, reason_code); 156} 157 158static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 159 const u8 *addr, int key_idx, int set_tx, 160 const u8 *seq, size_t seq_len, 161 const u8 *key, size_t key_len) 162{ 163 WPA_ASSERT(sm->ctx->set_key); 164 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 165 seq, seq_len, key, key_len); 166} 167 168static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 169{ 170 WPA_ASSERT(sm->ctx->get_network_ctx); 171 return sm->ctx->get_network_ctx(sm->ctx->ctx); 172} 173 174static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 175{ 176 WPA_ASSERT(sm->ctx->get_bssid); 177 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 178} 179 180static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 181 u16 proto, const u8 *buf, size_t len) 182{ 183 WPA_ASSERT(sm->ctx->ether_send); 184 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 185} 186 187static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 188{ 189 WPA_ASSERT(sm->ctx->get_beacon_ie); 190 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 191} 192 193static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 194{ 195 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 196 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 197} 198 199static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 200 const void *data, u16 data_len, 201 size_t *msg_len, void **data_pos) 202{ 203 WPA_ASSERT(sm->ctx->alloc_eapol); 204 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 205 msg_len, data_pos); 206} 207 208static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 209 const u8 *pmkid) 210{ 211 WPA_ASSERT(sm->ctx->add_pmkid); 212 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 213} 214 215static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 216 const u8 *pmkid) 217{ 218 WPA_ASSERT(sm->ctx->remove_pmkid); 219 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 220} 221 222static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 223 int protect_type, int key_type) 224{ 225 WPA_ASSERT(sm->ctx->mlme_setprotection); 226 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 227 key_type); 228} 229 230static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 231 const u8 *ies, size_t ies_len) 232{ 233 if (sm->ctx->update_ft_ies) 234 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 235 return -1; 236} 237 238static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 239 const u8 *target_ap, 240 const u8 *ies, size_t ies_len) 241{ 242 if (sm->ctx->send_ft_action) 243 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 244 ies, ies_len); 245 return -1; 246} 247 248static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 249 const u8 *target_ap) 250{ 251 if (sm->ctx->mark_authenticated) 252 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 253 return -1; 254} 255 256static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 257{ 258 if (!sm->ctx->set_rekey_offload) 259 return; 260 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, 261 sm->ptk.kck, sm->rx_replay_counter); 262} 263 264#ifdef CONFIG_TDLS 265static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 266 int *tdls_supported, 267 int *tdls_ext_setup) 268{ 269 if (sm->ctx->tdls_get_capa) 270 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 271 tdls_ext_setup); 272 return -1; 273} 274 275static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 276 u8 action_code, u8 dialog_token, 277 u16 status_code, const u8 *buf, 278 size_t len) 279{ 280 if (sm->ctx->send_tdls_mgmt) 281 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 282 dialog_token, status_code, 283 buf, 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 capability, const u8 *supp_rates, 298 size_t supp_rates_len) 299{ 300 if (sm->ctx->tdls_peer_addset) 301 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 302 capability, supp_rates, 303 supp_rates_len); 304 return -1; 305} 306#endif /* CONFIG_TDLS */ 307 308void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, 309 int ver, const u8 *dest, u16 proto, 310 u8 *msg, size_t msg_len, u8 *key_mic); 311int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 312 const struct wpa_eapol_key *key, 313 int ver, const u8 *nonce, 314 const u8 *wpa_ie, size_t wpa_ie_len, 315 struct wpa_ptk *ptk); 316int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 317 const struct wpa_eapol_key *key, 318 u16 ver, u16 key_info, 319 const u8 *kde, size_t kde_len, 320 struct wpa_ptk *ptk); 321 322int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 323 const struct wpa_eapol_key *key, 324 struct wpa_ptk *ptk, size_t ptk_len); 325 326void wpa_tdls_assoc(struct wpa_sm *sm); 327void wpa_tdls_disassoc(struct wpa_sm *sm); 328 329#endif /* WPA_I_H */ 330