1 /*
2 * Internal WPA/RSN supplicant state machine definitions
3 * Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #ifndef WPA_I_H
10 #define WPA_I_H
11
12 #include "utils/list.h"
13
14 struct wpa_peerkey;
15 struct wpa_tdls_peer;
16 struct wpa_eapol_key;
17
18 /**
19 * struct wpa_sm - Internal WPA state machine data
20 */
21 struct wpa_sm {
22 u8 pmk[PMK_LEN];
23 size_t pmk_len;
24 struct wpa_ptk ptk, tptk;
25 int ptk_set, tptk_set;
26 u8 snonce[WPA_NONCE_LEN];
27 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
28 int renew_snonce;
29 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
30 int rx_replay_counter_set;
31 u8 request_counter[WPA_REPLAY_COUNTER_LEN];
32
33 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
34
35 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
36 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */
37 struct dl_list pmksa_candidates;
38
39 struct l2_packet_data *l2_preauth;
40 struct l2_packet_data *l2_preauth_br;
41 struct l2_packet_data *l2_tdls;
42 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or
43 * 00:00:00:00:00:00 if no pre-auth is
44 * in progress */
45 struct eapol_sm *preauth_eapol;
46
47 struct wpa_sm_ctx *ctx;
48
49 void *scard_ctx; /* context for smartcard callbacks */
50 int fast_reauth; /* whether EAP fast re-authentication is enabled */
51
52 void *network_ctx;
53 int peerkey_enabled;
54 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */
55 int proactive_key_caching;
56 int eap_workaround;
57 void *eap_conf_ctx;
58 u8 ssid[32];
59 size_t ssid_len;
60 int wpa_ptk_rekey;
61 int p2p;
62
63 u8 own_addr[ETH_ALEN];
64 const char *ifname;
65 const char *bridge_ifname;
66 u8 bssid[ETH_ALEN];
67
68 unsigned int dot11RSNAConfigPMKLifetime;
69 unsigned int dot11RSNAConfigPMKReauthThreshold;
70 unsigned int dot11RSNAConfigSATimeout;
71
72 unsigned int dot11RSNA4WayHandshakeFailures;
73
74 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
75 unsigned int proto;
76 unsigned int pairwise_cipher;
77 unsigned int group_cipher;
78 unsigned int key_mgmt;
79 unsigned int mgmt_group_cipher;
80
81 int rsn_enabled; /* Whether RSN is enabled in configuration */
82 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */
83
84 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */
85 size_t assoc_wpa_ie_len;
86 u8 *ap_wpa_ie, *ap_rsn_ie;
87 size_t ap_wpa_ie_len, ap_rsn_ie_len;
88
89 #ifdef CONFIG_PEERKEY
90 struct wpa_peerkey *peerkey;
91 #endif /* CONFIG_PEERKEY */
92 #ifdef CONFIG_TDLS
93 struct wpa_tdls_peer *tdls;
94 int tdls_prohibited;
95 int tdls_disabled;
96
97 /* The driver supports TDLS */
98 int tdls_supported;
99
100 /*
101 * The driver requires explicit discovery/setup/teardown frames sent
102 * to it via tdls_mgmt.
103 */
104 int tdls_external_setup;
105 #endif /* CONFIG_TDLS */
106
107 #ifdef CONFIG_IEEE80211R
108 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
109 size_t xxkey_len;
110 u8 pmk_r0[PMK_LEN];
111 u8 pmk_r0_name[WPA_PMK_NAME_LEN];
112 u8 pmk_r1[PMK_LEN];
113 u8 pmk_r1_name[WPA_PMK_NAME_LEN];
114 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN];
115 u8 r0kh_id[FT_R0KH_ID_MAX_LEN];
116 size_t r0kh_id_len;
117 u8 r1kh_id[FT_R1KH_ID_LEN];
118 int ft_completed;
119 int over_the_ds_in_progress;
120 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */
121 int set_ptk_after_assoc;
122 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */
123 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */
124 size_t assoc_resp_ies_len;
125 #endif /* CONFIG_IEEE80211R */
126
127 #ifdef CONFIG_P2P
128 u8 p2p_ip_addr[3 * 4];
129 #endif /* CONFIG_P2P */
130 };
131
132
wpa_sm_set_state(struct wpa_sm * sm,enum wpa_states state)133 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state)
134 {
135 WPA_ASSERT(sm->ctx->set_state);
136 sm->ctx->set_state(sm->ctx->ctx, state);
137 }
138
wpa_sm_get_state(struct wpa_sm * sm)139 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm)
140 {
141 WPA_ASSERT(sm->ctx->get_state);
142 return sm->ctx->get_state(sm->ctx->ctx);
143 }
144
wpa_sm_deauthenticate(struct wpa_sm * sm,int reason_code)145 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code)
146 {
147 WPA_ASSERT(sm->ctx->deauthenticate);
148 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code);
149 }
150
wpa_sm_set_key(struct wpa_sm * sm,enum wpa_alg alg,const u8 * addr,int key_idx,int set_tx,const u8 * seq,size_t seq_len,const u8 * key,size_t key_len)151 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg,
152 const u8 *addr, int key_idx, int set_tx,
153 const u8 *seq, size_t seq_len,
154 const u8 *key, size_t key_len)
155 {
156 WPA_ASSERT(sm->ctx->set_key);
157 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx,
158 seq, seq_len, key, key_len);
159 }
160
wpa_sm_get_network_ctx(struct wpa_sm * sm)161 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm)
162 {
163 WPA_ASSERT(sm->ctx->get_network_ctx);
164 return sm->ctx->get_network_ctx(sm->ctx->ctx);
165 }
166
wpa_sm_get_bssid(struct wpa_sm * sm,u8 * bssid)167 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid)
168 {
169 WPA_ASSERT(sm->ctx->get_bssid);
170 return sm->ctx->get_bssid(sm->ctx->ctx, bssid);
171 }
172
wpa_sm_ether_send(struct wpa_sm * sm,const u8 * dest,u16 proto,const u8 * buf,size_t len)173 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest,
174 u16 proto, const u8 *buf, size_t len)
175 {
176 WPA_ASSERT(sm->ctx->ether_send);
177 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len);
178 }
179
wpa_sm_get_beacon_ie(struct wpa_sm * sm)180 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm)
181 {
182 WPA_ASSERT(sm->ctx->get_beacon_ie);
183 return sm->ctx->get_beacon_ie(sm->ctx->ctx);
184 }
185
wpa_sm_cancel_auth_timeout(struct wpa_sm * sm)186 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm)
187 {
188 WPA_ASSERT(sm->ctx->cancel_auth_timeout);
189 sm->ctx->cancel_auth_timeout(sm->ctx->ctx);
190 }
191
wpa_sm_alloc_eapol(struct wpa_sm * sm,u8 type,const void * data,u16 data_len,size_t * msg_len,void ** data_pos)192 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type,
193 const void *data, u16 data_len,
194 size_t *msg_len, void **data_pos)
195 {
196 WPA_ASSERT(sm->ctx->alloc_eapol);
197 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len,
198 msg_len, data_pos);
199 }
200
wpa_sm_add_pmkid(struct wpa_sm * sm,const u8 * bssid,const u8 * pmkid)201 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid,
202 const u8 *pmkid)
203 {
204 WPA_ASSERT(sm->ctx->add_pmkid);
205 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid);
206 }
207
wpa_sm_remove_pmkid(struct wpa_sm * sm,const u8 * bssid,const u8 * pmkid)208 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid,
209 const u8 *pmkid)
210 {
211 WPA_ASSERT(sm->ctx->remove_pmkid);
212 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid);
213 }
214
wpa_sm_mlme_setprotection(struct wpa_sm * sm,const u8 * addr,int protect_type,int key_type)215 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr,
216 int protect_type, int key_type)
217 {
218 WPA_ASSERT(sm->ctx->mlme_setprotection);
219 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type,
220 key_type);
221 }
222
wpa_sm_update_ft_ies(struct wpa_sm * sm,const u8 * md,const u8 * ies,size_t ies_len)223 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md,
224 const u8 *ies, size_t ies_len)
225 {
226 if (sm->ctx->update_ft_ies)
227 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len);
228 return -1;
229 }
230
wpa_sm_send_ft_action(struct wpa_sm * sm,u8 action,const u8 * target_ap,const u8 * ies,size_t ies_len)231 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action,
232 const u8 *target_ap,
233 const u8 *ies, size_t ies_len)
234 {
235 if (sm->ctx->send_ft_action)
236 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap,
237 ies, ies_len);
238 return -1;
239 }
240
wpa_sm_mark_authenticated(struct wpa_sm * sm,const u8 * target_ap)241 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm,
242 const u8 *target_ap)
243 {
244 if (sm->ctx->mark_authenticated)
245 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap);
246 return -1;
247 }
248
wpa_sm_set_rekey_offload(struct wpa_sm * sm)249 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm)
250 {
251 if (!sm->ctx->set_rekey_offload)
252 return;
253 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek,
254 sm->ptk.kck, sm->rx_replay_counter);
255 }
256
257 #ifdef CONFIG_TDLS
wpa_sm_tdls_get_capa(struct wpa_sm * sm,int * tdls_supported,int * tdls_ext_setup)258 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm,
259 int *tdls_supported,
260 int *tdls_ext_setup)
261 {
262 if (sm->ctx->tdls_get_capa)
263 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported,
264 tdls_ext_setup);
265 return -1;
266 }
267
wpa_sm_send_tdls_mgmt(struct wpa_sm * sm,const u8 * dst,u8 action_code,u8 dialog_token,u16 status_code,u32 peer_capab,const u8 * buf,size_t len)268 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst,
269 u8 action_code, u8 dialog_token,
270 u16 status_code, u32 peer_capab,
271 const u8 *buf, size_t len)
272 {
273 if (sm->ctx->send_tdls_mgmt)
274 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code,
275 dialog_token, status_code,
276 peer_capab, buf, len);
277 return -1;
278 }
279
wpa_sm_tdls_oper(struct wpa_sm * sm,int oper,const u8 * peer)280 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper,
281 const u8 *peer)
282 {
283 if (sm->ctx->tdls_oper)
284 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer);
285 return -1;
286 }
287
288 static inline int
wpa_sm_tdls_peer_addset(struct wpa_sm * sm,const u8 * addr,int add,u16 aid,u16 capability,const u8 * supp_rates,size_t supp_rates_len,const struct ieee80211_ht_capabilities * ht_capab,const struct ieee80211_vht_capabilities * vht_capab,u8 qosinfo,const u8 * ext_capab,size_t ext_capab_len,const u8 * supp_channels,size_t supp_channels_len,const u8 * supp_oper_classes,size_t supp_oper_classes_len)289 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add,
290 u16 aid, u16 capability, const u8 *supp_rates,
291 size_t supp_rates_len,
292 const struct ieee80211_ht_capabilities *ht_capab,
293 const struct ieee80211_vht_capabilities *vht_capab,
294 u8 qosinfo, const u8 *ext_capab, size_t ext_capab_len,
295 const u8 *supp_channels, size_t supp_channels_len,
296 const u8 *supp_oper_classes,
297 size_t supp_oper_classes_len)
298 {
299 if (sm->ctx->tdls_peer_addset)
300 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add,
301 aid, capability, supp_rates,
302 supp_rates_len, ht_capab,
303 vht_capab, qosinfo,
304 ext_capab, ext_capab_len,
305 supp_channels,
306 supp_channels_len,
307 supp_oper_classes,
308 supp_oper_classes_len);
309 return -1;
310 }
311 #endif /* CONFIG_TDLS */
312
313 void wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck,
314 int ver, const u8 *dest, u16 proto,
315 u8 *msg, size_t msg_len, u8 *key_mic);
316 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst,
317 const struct wpa_eapol_key *key,
318 int ver, const u8 *nonce,
319 const u8 *wpa_ie, size_t wpa_ie_len,
320 struct wpa_ptk *ptk);
321 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst,
322 const struct wpa_eapol_key *key,
323 u16 ver, u16 key_info,
324 struct wpa_ptk *ptk);
325
326 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr,
327 const struct wpa_eapol_key *key,
328 struct wpa_ptk *ptk, size_t ptk_len);
329
330 void wpa_tdls_assoc(struct wpa_sm *sm);
331 void wpa_tdls_disassoc(struct wpa_sm *sm);
332
333 #endif /* WPA_I_H */
334