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/*
* wpa_supplicant - WPA2/RSN PMKSA cache functions
* Copyright (c) 2003-2009, 2011-2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef PMKSA_CACHE_H
#define PMKSA_CACHE_H
/**
* struct rsn_pmksa_cache_entry - PMKSA cache entry
*/
struct rsn_pmksa_cache_entry {
struct rsn_pmksa_cache_entry *next;
u8 pmkid[PMKID_LEN];
u8 pmk[PMK_LEN_MAX];
size_t pmk_len;
os_time_t expiration;
int akmp; /* WPA_KEY_MGMT_* */
u8 aa[ETH_ALEN];
os_time_t reauth_time;
/**
* network_ctx - Network configuration context
*
* This field is only used to match PMKSA cache entries to a specific
* network configuration (e.g., a specific SSID and security policy).
* This can be a pointer to the configuration entry, but PMKSA caching
* code does not dereference the value and this could be any kind of
* identifier.
*/
void *network_ctx;
int opportunistic;
};
struct rsn_pmksa_cache;
enum pmksa_free_reason {
PMKSA_FREE,
PMKSA_REPLACE,
PMKSA_EXPIRE,
};
#ifdef IEEE8021X_EAPOL
struct rsn_pmksa_cache *
pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
void *ctx, enum pmksa_free_reason reason),
void *ctx, struct wpa_sm *sm);
void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa);
struct rsn_pmksa_cache_entry * pmksa_cache_get(struct rsn_pmksa_cache *pmksa,
const u8 *aa, const u8 *pmkid,
const void *network_ctx);
int pmksa_cache_list(struct rsn_pmksa_cache *pmksa, char *buf, size_t len);
struct rsn_pmksa_cache_entry *
pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len,
const u8 *pmkid, const u8 *kck, size_t kck_len,
const u8 *aa, const u8 *spa, void *network_ctx, int akmp);
struct rsn_pmksa_cache_entry *
pmksa_cache_add_entry(struct rsn_pmksa_cache *pmksa,
struct rsn_pmksa_cache_entry *entry);
struct rsn_pmksa_cache_entry * pmksa_cache_get_current(struct wpa_sm *sm);
void pmksa_cache_clear_current(struct wpa_sm *sm);
int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid,
const u8 *bssid, void *network_ctx,
int try_opportunistic);
struct rsn_pmksa_cache_entry *
pmksa_cache_get_opportunistic(struct rsn_pmksa_cache *pmksa,
void *network_ctx, const u8 *aa);
void pmksa_cache_flush(struct rsn_pmksa_cache *pmksa, void *network_ctx,
const u8 *pmk, size_t pmk_len);
#else /* IEEE8021X_EAPOL */
static inline struct rsn_pmksa_cache *
pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
void *ctx, enum pmksa_free_reason reason),
void *ctx, struct wpa_sm *sm)
{
return (void *) -1;
}
static inline void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa)
{
}
static inline struct rsn_pmksa_cache_entry *
pmksa_cache_get(struct rsn_pmksa_cache *pmksa, const u8 *aa, const u8 *pmkid,
const void *network_ctx)
{
return NULL;
}
static inline struct rsn_pmksa_cache_entry *
pmksa_cache_get_current(struct wpa_sm *sm)
{
return NULL;
}
static inline int pmksa_cache_list(struct rsn_pmksa_cache *pmksa, char *buf,
size_t len)
{
return -1;
}
static inline struct rsn_pmksa_cache_entry *
pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len,
const u8 *pmkid, const u8 *kck, size_t kck_len,
const u8 *aa, const u8 *spa, void *network_ctx, int akmp)
{
return NULL;
}
static inline void pmksa_cache_clear_current(struct wpa_sm *sm)
{
}
static inline int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid,
const u8 *bssid,
void *network_ctx,
int try_opportunistic)
{
return -1;
}
static inline void pmksa_cache_flush(struct rsn_pmksa_cache *pmksa,
void *network_ctx,
const u8 *pmk, size_t pmk_len)
{
}
#endif /* IEEE8021X_EAPOL */
#endif /* PMKSA_CACHE_H */
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