1 /* 2 * wpa_supplicant - WPA2/RSN PMKSA cache functions 3 * Copyright (c) 2003-2008, Jouni Malinen <j (at) 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 PMKSA_CACHE_H 16 #define PMKSA_CACHE_H 17 18 /** 19 * struct rsn_pmksa_cache_entry - PMKSA cache entry 20 */ 21 struct rsn_pmksa_cache_entry { 22 struct rsn_pmksa_cache_entry *next; 23 u8 pmkid[PMKID_LEN]; 24 u8 pmk[PMK_LEN]; 25 size_t pmk_len; 26 os_time_t expiration; 27 int akmp; /* WPA_KEY_MGMT_* */ 28 u8 aa[ETH_ALEN]; 29 30 os_time_t reauth_time; 31 32 /** 33 * network_ctx - Network configuration context 34 * 35 * This field is only used to match PMKSA cache entries to a specific 36 * network configuration (e.g., a specific SSID and security policy). 37 * This can be a pointer to the configuration entry, but PMKSA caching 38 * code does not dereference the value and this could be any kind of 39 * identifier. 40 */ 41 void *network_ctx; 42 int opportunistic; 43 }; 44 45 struct rsn_pmksa_cache; 46 47 #if defined(IEEE8021X_EAPOL) && !defined(CONFIG_NO_WPA2) 48 49 struct rsn_pmksa_cache * 50 pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry, 51 void *ctx, int replace), 52 void *ctx, struct wpa_sm *sm); 53 void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa); 54 struct rsn_pmksa_cache_entry * pmksa_cache_get(struct rsn_pmksa_cache *pmksa, 55 const u8 *aa, const u8 *pmkid); 56 int pmksa_cache_list(struct wpa_sm *sm, char *buf, size_t len); 57 struct rsn_pmksa_cache_entry * 58 pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len, 59 const u8 *aa, const u8 *spa, void *network_ctx, int akmp); 60 void pmksa_cache_notify_reconfig(struct rsn_pmksa_cache *pmksa); 61 struct rsn_pmksa_cache_entry * pmksa_cache_get_current(struct wpa_sm *sm); 62 void pmksa_cache_clear_current(struct wpa_sm *sm); 63 int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid, 64 const u8 *bssid, void *network_ctx, 65 int try_opportunistic); 66 struct rsn_pmksa_cache_entry * 67 pmksa_cache_get_opportunistic(struct rsn_pmksa_cache *pmksa, 68 void *network_ctx, const u8 *aa); 69 70 #else /* IEEE8021X_EAPOL and !CONFIG_NO_WPA2 */ 71 72 static inline struct rsn_pmksa_cache * 73 pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry, 74 void *ctx, int replace), 75 void *ctx, struct wpa_sm *sm) 76 { 77 return (void *) -1; 78 } 79 80 static inline void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa) 81 { 82 } 83 84 static inline struct rsn_pmksa_cache_entry * 85 pmksa_cache_get(struct rsn_pmksa_cache *pmksa, const u8 *aa, const u8 *pmkid) 86 { 87 return NULL; 88 } 89 90 static inline struct rsn_pmksa_cache_entry * 91 pmksa_cache_get_current(struct wpa_sm *sm) 92 { 93 return NULL; 94 } 95 96 static inline int pmksa_cache_list(struct wpa_sm *sm, char *buf, size_t len) 97 { 98 return -1; 99 } 100 101 static inline struct rsn_pmksa_cache_entry * 102 pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len, 103 const u8 *aa, const u8 *spa, void *network_ctx, int akmp) 104 { 105 return NULL; 106 } 107 108 static inline void pmksa_cache_notify_reconfig(struct rsn_pmksa_cache *pmksa) 109 { 110 } 111 112 static inline void pmksa_cache_clear_current(struct wpa_sm *sm) 113 { 114 } 115 116 static inline int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid, 117 const u8 *bssid, 118 void *network_ctx, 119 int try_opportunistic) 120 { 121 return -1; 122 } 123 124 #endif /* IEEE8021X_EAPOL and !CONFIG_NO_WPA2 */ 125 126 #endif /* PMKSA_CACHE_H */ 127
