pmksa_cache.h revision d5e4923d04122f81300fa68fb07d64ede28fd44d
1/* 2 * wpa_supplicant - WPA2/RSN PMKSA cache functions 3 * Copyright (c) 2003-2009, 2011-2012, 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 PMKSA_CACHE_H 10#define PMKSA_CACHE_H 11 12/** 13 * struct rsn_pmksa_cache_entry - PMKSA cache entry 14 */ 15struct rsn_pmksa_cache_entry { 16 struct rsn_pmksa_cache_entry *next; 17 u8 pmkid[PMKID_LEN]; 18 u8 pmk[PMK_LEN]; 19 size_t pmk_len; 20 os_time_t expiration; 21 int akmp; /* WPA_KEY_MGMT_* */ 22 u8 aa[ETH_ALEN]; 23 24 os_time_t reauth_time; 25 26 /** 27 * network_ctx - Network configuration context 28 * 29 * This field is only used to match PMKSA cache entries to a specific 30 * network configuration (e.g., a specific SSID and security policy). 31 * This can be a pointer to the configuration entry, but PMKSA caching 32 * code does not dereference the value and this could be any kind of 33 * identifier. 34 */ 35 void *network_ctx; 36 int opportunistic; 37}; 38 39struct rsn_pmksa_cache; 40 41enum pmksa_free_reason { 42 PMKSA_FREE, 43 PMKSA_REPLACE, 44 PMKSA_EXPIRE, 45}; 46 47#if defined(IEEE8021X_EAPOL) && !defined(CONFIG_NO_WPA2) 48 49struct rsn_pmksa_cache * 50pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry, 51 void *ctx, enum pmksa_free_reason reason), 52 void *ctx, struct wpa_sm *sm); 53void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa); 54struct rsn_pmksa_cache_entry * pmksa_cache_get(struct rsn_pmksa_cache *pmksa, 55 const u8 *aa, const u8 *pmkid, 56 const void *network_ctx); 57int pmksa_cache_list(struct rsn_pmksa_cache *pmksa, char *buf, size_t len); 58struct rsn_pmksa_cache_entry * 59pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len, 60 const u8 *aa, const u8 *spa, void *network_ctx, int akmp); 61struct rsn_pmksa_cache_entry * pmksa_cache_get_current(struct wpa_sm *sm); 62void pmksa_cache_clear_current(struct wpa_sm *sm); 63int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid, 64 const u8 *bssid, void *network_ctx, 65 int try_opportunistic); 66struct rsn_pmksa_cache_entry * 67pmksa_cache_get_opportunistic(struct rsn_pmksa_cache *pmksa, 68 void *network_ctx, const u8 *aa); 69void pmksa_cache_flush(struct rsn_pmksa_cache *pmksa, void *network_ctx); 70 71#else /* IEEE8021X_EAPOL and !CONFIG_NO_WPA2 */ 72 73static inline struct rsn_pmksa_cache * 74pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry, 75 void *ctx, int reason), 76 void *ctx, struct wpa_sm *sm) 77{ 78 return (void *) -1; 79} 80 81static inline void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa) 82{ 83} 84 85static inline struct rsn_pmksa_cache_entry * 86pmksa_cache_get(struct rsn_pmksa_cache *pmksa, const u8 *aa, const u8 *pmkid, 87 const void *network_ctx) 88{ 89 return NULL; 90} 91 92static inline struct rsn_pmksa_cache_entry * 93pmksa_cache_get_current(struct wpa_sm *sm) 94{ 95 return NULL; 96} 97 98static inline int pmksa_cache_list(struct rsn_pmksa_cache *pmksa, char *buf, 99 size_t len) 100{ 101 return -1; 102} 103 104static inline struct rsn_pmksa_cache_entry * 105pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len, 106 const u8 *aa, const u8 *spa, void *network_ctx, int akmp) 107{ 108 return NULL; 109} 110 111static inline void pmksa_cache_clear_current(struct wpa_sm *sm) 112{ 113} 114 115static inline int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid, 116 const u8 *bssid, 117 void *network_ctx, 118 int try_opportunistic) 119{ 120 return -1; 121} 122 123static inline void pmksa_cache_flush(struct rsn_pmksa_cache *pmksa, 124 void *network_ctx) 125{ 126} 127 128#endif /* IEEE8021X_EAPOL and !CONFIG_NO_WPA2 */ 129 130#endif /* PMKSA_CACHE_H */ 131