1/*
2 * wpa_supplicant - WPA2/RSN PMKSA cache functions
3 * Copyright (c) 2003-2006, Jouni Malinen <j@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 */
21struct 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	struct wpa_ssid *ssid;
32	int opportunistic;
33};
34
35struct rsn_pmksa_cache;
36
37#if defined(IEEE8021X_EAPOL) && !defined(CONFIG_NO_WPA2)
38
39struct rsn_pmksa_cache *
40pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
41				 void *ctx, int replace),
42		 void *ctx, struct wpa_sm *sm);
43void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa);
44struct rsn_pmksa_cache_entry * pmksa_cache_get(struct rsn_pmksa_cache *pmksa,
45					       const u8 *aa, const u8 *pmkid);
46int pmksa_cache_list(struct wpa_sm *sm, char *buf, size_t len);
47struct rsn_pmksa_cache_entry *
48pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len,
49		const u8 *aa, const u8 *spa, struct wpa_ssid *ssid);
50void pmksa_cache_notify_reconfig(struct rsn_pmksa_cache *pmksa);
51struct rsn_pmksa_cache_entry * pmksa_cache_get_current(struct wpa_sm *sm);
52void pmksa_cache_clear_current(struct wpa_sm *sm);
53int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid,
54			    const u8 *bssid, struct wpa_ssid *ssid,
55			    int try_opportunistic);
56struct rsn_pmksa_cache_entry *
57pmksa_cache_get_opportunistic(struct rsn_pmksa_cache *pmksa,
58			      struct wpa_ssid *ssid, const u8 *aa);
59
60#else /* IEEE8021X_EAPOL and !CONFIG_NO_WPA2 */
61
62static inline struct rsn_pmksa_cache *
63pmksa_cache_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
64				 void *ctx, int replace),
65		 void *ctx, struct wpa_sm *sm)
66{
67	return (void *) -1;
68}
69
70static inline void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa)
71{
72}
73
74static inline struct rsn_pmksa_cache_entry *
75pmksa_cache_get(struct rsn_pmksa_cache *pmksa, const u8 *aa, const u8 *pmkid)
76{
77	return NULL;
78}
79
80static inline struct rsn_pmksa_cache_entry *
81pmksa_cache_get_current(struct wpa_sm *sm)
82{
83	return NULL;
84}
85
86static inline int pmksa_cache_list(struct wpa_sm *sm, char *buf, size_t len)
87{
88	return -1;
89}
90
91static inline struct rsn_pmksa_cache_entry *
92pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len,
93		const u8 *aa, const u8 *spa, struct wpa_ssid *ssid)
94{
95	return NULL;
96}
97
98static inline void pmksa_cache_notify_reconfig(struct rsn_pmksa_cache *pmksa)
99{
100}
101
102static inline void pmksa_cache_clear_current(struct wpa_sm *sm)
103{
104}
105
106static inline int pmksa_cache_set_current(struct wpa_sm *sm, const u8 *pmkid,
107					  const u8 *bssid,
108					  struct wpa_ssid *ssid,
109					  int try_opportunistic)
110{
111	return -1;
112}
113
114#endif /* IEEE8021X_EAPOL and !CONFIG_NO_WPA2 */
115
116#endif /* PMKSA_CACHE_H */
117