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"
24 * struct wpa_sm - Internal WPA state machine data
29 struct wpa_ptk ptk, tptk;
30 int ptk_set, tptk_set;
31 u8 snonce[WPA_NONCE_LEN];
32 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
34 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
35 int rx_replay_counter_set;
36 u8 request_counter[WPA_REPLAY_COUNTER_LEN];
38 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
40 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
41 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */
42 struct dl_list pmksa_candidates;
44 struct l2_packet_data *l2_preauth;
45 struct l2_packet_data *l2_preauth_br;
46 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or
47 * 00:00:00:00:00:00 if no pre-auth is
49 struct eapol_sm *preauth_eapol;
51 struct wpa_sm_ctx *ctx;
53 void *scard_ctx; /* context for smartcard callbacks */
54 int fast_reauth; /* whether EAP fast re-authentication is enabled */
58 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */
59 int proactive_key_caching;
66 u8 own_addr[ETH_ALEN];
68 const char *bridge_ifname;
71 unsigned int dot11RSNAConfigPMKLifetime;
72 unsigned int dot11RSNAConfigPMKReauthThreshold;
73 unsigned int dot11RSNAConfigSATimeout;
75 unsigned int dot11RSNA4WayHandshakeFailures;
77 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
79 unsigned int pairwise_cipher;
80 unsigned int group_cipher;
81 unsigned int key_mgmt;
82 unsigned int mgmt_group_cipher;
84 int rsn_enabled; /* Whether RSN is enabled in configuration */
86 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */
87 size_t assoc_wpa_ie_len;
88 u8 *ap_wpa_ie, *ap_rsn_ie;
89 size_t ap_wpa_ie_len, ap_rsn_ie_len;
92 struct wpa_peerkey *peerkey;
93 #endif /* CONFIG_PEERKEY */
95 #ifdef CONFIG_IEEE80211R
96 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
99 u8 pmk_r0_name[WPA_PMK_NAME_LEN];
101 u8 pmk_r1_name[WPA_PMK_NAME_LEN];
102 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN];
103 u8 r0kh_id[FT_R0KH_ID_MAX_LEN];
105 u8 r1kh_id[FT_R1KH_ID_LEN];
107 int over_the_ds_in_progress;
108 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */
109 int set_ptk_after_assoc;
110 #endif /* CONFIG_IEEE80211R */
114 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state)
116 WPA_ASSERT(sm->ctx->set_state);
117 sm->ctx->set_state(sm->ctx->ctx, state);
120 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm)
122 WPA_ASSERT(sm->ctx->get_state);
123 return sm->ctx->get_state(sm->ctx->ctx);
126 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code)
128 WPA_ASSERT(sm->ctx->deauthenticate);
129 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code);
132 static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code)
134 WPA_ASSERT(sm->ctx->disassociate);
135 sm->ctx->disassociate(sm->ctx->ctx, reason_code);
138 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg,
139 const u8 *addr, int key_idx, int set_tx,
140 const u8 *seq, size_t seq_len,
141 const u8 *key, size_t key_len)
143 WPA_ASSERT(sm->ctx->set_key);
144 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx,
145 seq, seq_len, key, key_len);
148 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm)
150 WPA_ASSERT(sm->ctx->get_network_ctx);
151 return sm->ctx->get_network_ctx(sm->ctx->ctx);
154 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid)
156 WPA_ASSERT(sm->ctx->get_bssid);
157 return sm->ctx->get_bssid(sm->ctx->ctx, bssid);
160 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest,
161 u16 proto, const u8 *buf, size_t len)
163 WPA_ASSERT(sm->ctx->ether_send);
164 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len);
167 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm)
169 WPA_ASSERT(sm->ctx->get_beacon_ie);
170 return sm->ctx->get_beacon_ie(sm->ctx->ctx);
173 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm)
175 WPA_ASSERT(sm->ctx->cancel_auth_timeout);
176 sm->ctx->cancel_auth_timeout(sm->ctx->ctx);
179 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type,
180 const void *data, u16 data_len,
181 size_t *msg_len, void **data_pos)
183 WPA_ASSERT(sm->ctx->alloc_eapol);
184 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len,
188 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid,
191 WPA_ASSERT(sm->ctx->add_pmkid);
192 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid);
195 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid,
198 WPA_ASSERT(sm->ctx->remove_pmkid);
199 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid);
202 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr,
203 int protect_type, int key_type)
205 WPA_ASSERT(sm->ctx->mlme_setprotection);
206 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type,
210 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md,
211 const u8 *ies, size_t ies_len)
213 if (sm->ctx->update_ft_ies)
214 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len);
218 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action,
220 const u8 *ies, size_t ies_len)
222 if (sm->ctx->send_ft_action)
223 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap,
228 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm,
231 if (sm->ctx->mark_authenticated)
232 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap);
237 void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck,
238 int ver, const u8 *dest, u16 proto,
239 u8 *msg, size_t msg_len, u8 *key_mic);
240 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst,
241 const struct wpa_eapol_key *key,
242 int ver, const u8 *nonce,
243 const u8 *wpa_ie, size_t wpa_ie_len,
244 struct wpa_ptk *ptk);
245 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst,
246 const struct wpa_eapol_key *key,
247 u16 ver, u16 key_info,
248 const u8 *kde, size_t kde_len,
249 struct wpa_ptk *ptk);
251 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr,
252 const struct wpa_eapol_key *key,
253 struct wpa_ptk *ptk, size_t ptk_len);