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      1 /*
      2  * hostapd - PMKSA cache for IEEE 802.11i RSN
      3  * Copyright (c) 2004-2008, 2012, Jouni Malinen <j (at) 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 PMKSA_CACHE_H
     10 #define PMKSA_CACHE_H
     11 
     12 #include "radius/radius.h"
     13 
     14 /**
     15  * struct rsn_pmksa_cache_entry - PMKSA cache entry
     16  */
     17 struct rsn_pmksa_cache_entry {
     18 	struct rsn_pmksa_cache_entry *next, *hnext;
     19 	u8 pmkid[PMKID_LEN];
     20 	u8 pmk[PMK_LEN];
     21 	size_t pmk_len;
     22 	os_time_t expiration;
     23 	int akmp; /* WPA_KEY_MGMT_* */
     24 	u8 spa[ETH_ALEN];
     25 
     26 	u8 *identity;
     27 	size_t identity_len;
     28 	struct wpabuf *cui;
     29 	struct radius_class_data radius_class;
     30 	u8 eap_type_authsrv;
     31 	int vlan_id;
     32 	int opportunistic;
     33 };
     34 
     35 struct rsn_pmksa_cache;
     36 
     37 struct rsn_pmksa_cache *
     38 pmksa_cache_auth_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
     39 				      void *ctx), void *ctx);
     40 void pmksa_cache_auth_deinit(struct rsn_pmksa_cache *pmksa);
     41 struct rsn_pmksa_cache_entry *
     42 pmksa_cache_auth_get(struct rsn_pmksa_cache *pmksa,
     43 		     const u8 *spa, const u8 *pmkid);
     44 struct rsn_pmksa_cache_entry * pmksa_cache_get_okc(
     45 	struct rsn_pmksa_cache *pmksa, const u8 *spa, const u8 *aa,
     46 	const u8 *pmkid);
     47 struct rsn_pmksa_cache_entry *
     48 pmksa_cache_auth_add(struct rsn_pmksa_cache *pmksa,
     49 		     const u8 *pmk, size_t pmk_len,
     50 		     const u8 *aa, const u8 *spa, int session_timeout,
     51 		     struct eapol_state_machine *eapol, int akmp);
     52 struct rsn_pmksa_cache_entry *
     53 pmksa_cache_add_okc(struct rsn_pmksa_cache *pmksa,
     54 		    const struct rsn_pmksa_cache_entry *old_entry,
     55 		    const u8 *aa, const u8 *pmkid);
     56 void pmksa_cache_to_eapol_data(struct rsn_pmksa_cache_entry *entry,
     57 			       struct eapol_state_machine *eapol);
     58 
     59 #endif /* PMKSA_CACHE_H */
     60