2 * Internal WPA/RSN supplicant state machine definitions
3 * Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
18 #include "utils/list.h"
25 * struct wpa_sm - Internal WPA state machine data
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 */
35 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
36 int rx_replay_counter_set;
37 u8 request_counter[WPA_REPLAY_COUNTER_LEN];
39 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
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;
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
51 struct eapol_sm *preauth_eapol;
53 struct wpa_sm_ctx *ctx;
55 void *scard_ctx; /* context for smartcard callbacks */
56 int fast_reauth; /* whether EAP fast re-authentication is enabled */
60 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */
61 int proactive_key_caching;
68 u8 own_addr[ETH_ALEN];
70 const char *bridge_ifname;
73 unsigned int dot11RSNAConfigPMKLifetime;
74 unsigned int dot11RSNAConfigPMKReauthThreshold;
75 unsigned int dot11RSNAConfigSATimeout;
77 unsigned int dot11RSNA4WayHandshakeFailures;
79 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
81 unsigned int pairwise_cipher;
82 unsigned int group_cipher;
83 unsigned int key_mgmt;
84 unsigned int mgmt_group_cipher;
86 int rsn_enabled; /* Whether RSN is enabled in configuration */
87 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */
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;
95 struct wpa_peerkey *peerkey;
96 #endif /* CONFIG_PEERKEY */
98 struct wpa_tdls_peer *tdls;
102 /* The driver supports TDLS */
106 * The driver requires explicit discovery/setup/teardown frames sent
107 * to it via tdls_mgmt.
109 int tdls_external_setup;
110 #endif /* CONFIG_TDLS */
112 #ifdef CONFIG_IEEE80211R
113 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
116 u8 pmk_r0_name[WPA_PMK_NAME_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];
122 u8 r1kh_id[FT_R1KH_ID_LEN];
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 */
134 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state)
136 WPA_ASSERT(sm->ctx->set_state);
137 sm->ctx->set_state(sm->ctx->ctx, state);
140 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm)
142 WPA_ASSERT(sm->ctx->get_state);
143 return sm->ctx->get_state(sm->ctx->ctx);
146 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code)
148 WPA_ASSERT(sm->ctx->deauthenticate);
149 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code);
152 static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code)
154 WPA_ASSERT(sm->ctx->disassociate);
155 sm->ctx->disassociate(sm->ctx->ctx, reason_code);
158 static 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)
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);
168 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm)
170 WPA_ASSERT(sm->ctx->get_network_ctx);
171 return sm->ctx->get_network_ctx(sm->ctx->ctx);
174 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid)
176 WPA_ASSERT(sm->ctx->get_bssid);
177 return sm->ctx->get_bssid(sm->ctx->ctx, bssid);
180 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest,
181 u16 proto, const u8 *buf, size_t len)
183 WPA_ASSERT(sm->ctx->ether_send);
184 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len);
187 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm)
189 WPA_ASSERT(sm->ctx->get_beacon_ie);
190 return sm->ctx->get_beacon_ie(sm->ctx->ctx);
193 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm)
195 WPA_ASSERT(sm->ctx->cancel_auth_timeout);
196 sm->ctx->cancel_auth_timeout(sm->ctx->ctx);
199 static 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)
203 WPA_ASSERT(sm->ctx->alloc_eapol);
204 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len,
208 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid,
211 WPA_ASSERT(sm->ctx->add_pmkid);
212 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid);
215 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid,
218 WPA_ASSERT(sm->ctx->remove_pmkid);
219 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid);
222 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr,
223 int protect_type, int key_type)
225 WPA_ASSERT(sm->ctx->mlme_setprotection);
226 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type,
230 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md,
231 const u8 *ies, size_t ies_len)
233 if (sm->ctx->update_ft_ies)
234 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len);
238 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action,
240 const u8 *ies, size_t ies_len)
242 if (sm->ctx->send_ft_action)
243 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap,
248 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm,
251 if (sm->ctx->mark_authenticated)
252 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap);
256 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm)
258 if (!sm->ctx->set_rekey_offload)
260 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek,
261 sm->ptk.kck, sm->rx_replay_counter);
265 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm,
269 if (sm->ctx->tdls_get_capa)
270 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported,
275 static 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,
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,
287 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper,
290 if (sm->ctx->tdls_oper)
291 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer);
296 wpa_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)
300 if (sm->ctx->tdls_peer_addset)
301 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add,
302 capability, supp_rates,
306 #endif /* CONFIG_TDLS */
308 void 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);
311 int 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);
316 int 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);
322 int 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);
326 void wpa_tdls_assoc(struct wpa_sm *sm);
327 void wpa_tdls_disassoc(struct wpa_sm *sm);