1 /* 2 * wpa_supplicant - Internal WPA state machine definitions 3 * Copyright (c) 2004-2007, 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 struct rsn_pmksa_candidate; 19 struct wpa_peerkey; 20 struct wpa_eapol_key; 21 22 /** 23 * struct wpa_sm - Internal WPA state machine data 24 */ 25 struct wpa_sm { 26 u8 pmk[PMK_LEN]; 27 size_t pmk_len; 28 struct wpa_ptk ptk, tptk; 29 int ptk_set, tptk_set; 30 u8 snonce[WPA_NONCE_LEN]; 31 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */ 32 int renew_snonce; 33 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN]; 34 int rx_replay_counter_set; 35 u8 request_counter[WPA_REPLAY_COUNTER_LEN]; 36 37 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */ 38 39 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */ 40 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */ 41 struct rsn_pmksa_candidate *pmksa_candidates; 42 43 struct l2_packet_data *l2_preauth; 44 struct l2_packet_data *l2_preauth_br; 45 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or 46 * 00:00:00:00:00:00 if no pre-auth is 47 * in progress */ 48 struct eapol_sm *preauth_eapol; 49 50 struct wpa_sm_ctx *ctx; 51 52 void *scard_ctx; /* context for smartcard callbacks */ 53 int fast_reauth; /* whether EAP fast re-authentication is enabled */ 54 55 void *network_ctx; 56 int peerkey_enabled; 57 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */ 58 int proactive_key_caching; 59 int eap_workaround; 60 void *eap_conf_ctx; 61 u8 ssid[32]; 62 size_t ssid_len; 63 int wpa_ptk_rekey; 64 65 u8 own_addr[ETH_ALEN]; 66 const char *ifname; 67 const char *bridge_ifname; 68 u8 bssid[ETH_ALEN]; 69 70 unsigned int dot11RSNAConfigPMKLifetime; 71 unsigned int dot11RSNAConfigPMKReauthThreshold; 72 unsigned int dot11RSNAConfigSATimeout; 73 74 unsigned int dot11RSNA4WayHandshakeFailures; 75 76 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */ 77 unsigned int proto; 78 unsigned int pairwise_cipher; 79 unsigned int group_cipher; 80 unsigned int key_mgmt; 81 unsigned int mgmt_group_cipher; 82 83 int rsn_enabled; /* Whether RSN is enabled in configuration */ 84 85 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */ 86 size_t assoc_wpa_ie_len; 87 u8 *ap_wpa_ie, *ap_rsn_ie; 88 size_t ap_wpa_ie_len, ap_rsn_ie_len; 89 90 #ifdef CONFIG_PEERKEY 91 struct wpa_peerkey *peerkey; 92 #endif /* CONFIG_PEERKEY */ 93 94 #ifdef CONFIG_IEEE80211R 95 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 96 size_t xxkey_len; 97 u8 pmk_r0[PMK_LEN]; 98 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 99 u8 pmk_r1[PMK_LEN]; 100 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 101 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 102 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 103 size_t r0kh_id_len; 104 u8 r1kh_id[FT_R1KH_ID_LEN]; 105 int ft_completed; 106 int over_the_ds_in_progress; 107 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 108 #endif /* CONFIG_IEEE80211R */ 109 }; 110 111 112 static inline void wpa_sm_set_state(struct wpa_sm *sm, wpa_states state) 113 { 114 WPA_ASSERT(sm->ctx->set_state); 115 sm->ctx->set_state(sm->ctx->ctx, state); 116 } 117 118 static inline wpa_states wpa_sm_get_state(struct wpa_sm *sm) 119 { 120 WPA_ASSERT(sm->ctx->get_state); 121 return sm->ctx->get_state(sm->ctx->ctx); 122 } 123 124 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 125 { 126 WPA_ASSERT(sm->ctx->deauthenticate); 127 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 128 } 129 130 static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code) 131 { 132 WPA_ASSERT(sm->ctx->disassociate); 133 sm->ctx->disassociate(sm->ctx->ctx, reason_code); 134 } 135 136 static inline int wpa_sm_set_key(struct wpa_sm *sm, wpa_alg alg, 137 const u8 *addr, int key_idx, int set_tx, 138 const u8 *seq, size_t seq_len, 139 const u8 *key, size_t key_len) 140 { 141 WPA_ASSERT(sm->ctx->set_key); 142 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 143 seq, seq_len, key, key_len); 144 } 145 146 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 147 { 148 WPA_ASSERT(sm->ctx->get_network_ctx); 149 return sm->ctx->get_network_ctx(sm->ctx->ctx); 150 } 151 152 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 153 { 154 WPA_ASSERT(sm->ctx->get_bssid); 155 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 156 } 157 158 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 159 u16 proto, const u8 *buf, size_t len) 160 { 161 WPA_ASSERT(sm->ctx->ether_send); 162 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 163 } 164 165 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 166 { 167 WPA_ASSERT(sm->ctx->get_beacon_ie); 168 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 169 } 170 171 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 172 { 173 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 174 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 175 } 176 177 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 178 const void *data, u16 data_len, 179 size_t *msg_len, void **data_pos) 180 { 181 WPA_ASSERT(sm->ctx->alloc_eapol); 182 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 183 msg_len, data_pos); 184 } 185 186 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 187 const u8 *pmkid) 188 { 189 WPA_ASSERT(sm->ctx->add_pmkid); 190 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 191 } 192 193 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 194 const u8 *pmkid) 195 { 196 WPA_ASSERT(sm->ctx->remove_pmkid); 197 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 198 } 199 200 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 201 int protect_type, int key_type) 202 { 203 WPA_ASSERT(sm->ctx->mlme_setprotection); 204 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 205 key_type); 206 } 207 208 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 209 const u8 *ies, size_t ies_len) 210 { 211 if (sm->ctx->update_ft_ies) 212 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 213 return -1; 214 } 215 216 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 217 const u8 *target_ap, 218 const u8 *ies, size_t ies_len) 219 { 220 if (sm->ctx->send_ft_action) 221 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 222 ies, ies_len); 223 return -1; 224 } 225 226 227 void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, 228 int ver, const u8 *dest, u16 proto, 229 u8 *msg, size_t msg_len, u8 *key_mic); 230 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 231 const struct wpa_eapol_key *key, 232 int ver, const u8 *nonce, 233 const u8 *wpa_ie, size_t wpa_ie_len, 234 struct wpa_ptk *ptk); 235 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 236 const struct wpa_eapol_key *key, 237 u16 ver, u16 key_info, 238 const u8 *kde, size_t kde_len, 239 struct wpa_ptk *ptk); 240 241 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 242 const struct wpa_eapol_key *key, 243 struct wpa_ptk *ptk, size_t ptk_len); 244 245 #endif /* WPA_I_H */ 246