wpa_i.h revision 8d520ff1dc2da35cdca849e982051b86468016d8
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#endif /* CONFIG_TDLS */ 102 103#ifdef CONFIG_IEEE80211R 104 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 105 size_t xxkey_len; 106 u8 pmk_r0[PMK_LEN]; 107 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 108 u8 pmk_r1[PMK_LEN]; 109 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 110 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 111 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 112 size_t r0kh_id_len; 113 u8 r1kh_id[FT_R1KH_ID_LEN]; 114 int ft_completed; 115 int over_the_ds_in_progress; 116 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 117 int set_ptk_after_assoc; 118 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 119 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 120 size_t assoc_resp_ies_len; 121#endif /* CONFIG_IEEE80211R */ 122}; 123 124 125static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 126{ 127 WPA_ASSERT(sm->ctx->set_state); 128 sm->ctx->set_state(sm->ctx->ctx, state); 129} 130 131static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 132{ 133 WPA_ASSERT(sm->ctx->get_state); 134 return sm->ctx->get_state(sm->ctx->ctx); 135} 136 137static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 138{ 139 WPA_ASSERT(sm->ctx->deauthenticate); 140 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 141} 142 143static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code) 144{ 145 WPA_ASSERT(sm->ctx->disassociate); 146 sm->ctx->disassociate(sm->ctx->ctx, reason_code); 147} 148 149static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 150 const u8 *addr, int key_idx, int set_tx, 151 const u8 *seq, size_t seq_len, 152 const u8 *key, size_t key_len) 153{ 154 WPA_ASSERT(sm->ctx->set_key); 155 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 156 seq, seq_len, key, key_len); 157} 158 159static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 160{ 161 WPA_ASSERT(sm->ctx->get_network_ctx); 162 return sm->ctx->get_network_ctx(sm->ctx->ctx); 163} 164 165static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 166{ 167 WPA_ASSERT(sm->ctx->get_bssid); 168 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 169} 170 171static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 172 u16 proto, const u8 *buf, size_t len) 173{ 174 WPA_ASSERT(sm->ctx->ether_send); 175 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 176} 177 178static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 179{ 180 WPA_ASSERT(sm->ctx->get_beacon_ie); 181 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 182} 183 184static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 185{ 186 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 187 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 188} 189 190static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 191 const void *data, u16 data_len, 192 size_t *msg_len, void **data_pos) 193{ 194 WPA_ASSERT(sm->ctx->alloc_eapol); 195 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 196 msg_len, data_pos); 197} 198 199static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 200 const u8 *pmkid) 201{ 202 WPA_ASSERT(sm->ctx->add_pmkid); 203 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 204} 205 206static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 207 const u8 *pmkid) 208{ 209 WPA_ASSERT(sm->ctx->remove_pmkid); 210 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 211} 212 213static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 214 int protect_type, int key_type) 215{ 216 WPA_ASSERT(sm->ctx->mlme_setprotection); 217 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 218 key_type); 219} 220 221static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 222 const u8 *ies, size_t ies_len) 223{ 224 if (sm->ctx->update_ft_ies) 225 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 226 return -1; 227} 228 229static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 230 const u8 *target_ap, 231 const u8 *ies, size_t ies_len) 232{ 233 if (sm->ctx->send_ft_action) 234 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 235 ies, ies_len); 236 return -1; 237} 238 239static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 240 const u8 *target_ap) 241{ 242 if (sm->ctx->mark_authenticated) 243 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 244 return -1; 245} 246 247#ifdef CONFIG_TDLS 248static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 249 u8 action_code, u8 dialog_token, 250 u16 status_code, const u8 *buf, 251 size_t len) 252{ 253 if (sm->ctx->send_tdls_mgmt) 254 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 255 dialog_token, status_code, 256 buf, len); 257 return -1; 258} 259 260static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 261 const u8 *peer) 262{ 263 if (sm->ctx->tdls_oper) 264 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 265 return -1; 266} 267#endif /* CONFIG_TDLS */ 268 269void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, 270 int ver, const u8 *dest, u16 proto, 271 u8 *msg, size_t msg_len, u8 *key_mic); 272int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 273 const struct wpa_eapol_key *key, 274 int ver, const u8 *nonce, 275 const u8 *wpa_ie, size_t wpa_ie_len, 276 struct wpa_ptk *ptk); 277int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 278 const struct wpa_eapol_key *key, 279 u16 ver, u16 key_info, 280 const u8 *kde, size_t kde_len, 281 struct wpa_ptk *ptk); 282 283int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 284 const struct wpa_eapol_key *key, 285 struct wpa_ptk *ptk, size_t ptk_len); 286 287void wpa_tdls_assoc(struct wpa_sm *sm); 288void wpa_tdls_disassoc(struct wpa_sm *sm); 289 290#endif /* WPA_I_H */ 291