src/rsn_supp/pmksa_cache.c

29 	struct rsn_pmksa_cache_entry *pmksa; /* PMKSA cache */
39 static void pmksa_cache_set_expiration(struct rsn_pmksa_cache *pmksa);
48 static void pmksa_cache_free_entry(struct rsn_pmksa_cache *pmksa,
52 	pmksa->pmksa_count--;
53 	pmksa->free_cb(entry, pmksa->ctx, replace);
60 	struct rsn_pmksa_cache *pmksa = eloop_ctx;
64 	while (pmksa->pmksa && pmksa->pmksa->expiration <= now.sec) {
65 		struct rsn_pmksa_cache_entry *entry = pmksa->pmksa;
66 		pmksa->pmksa = entry->next;
69 		pmksa_cache_free_entry(pmksa, entry, 0);
72 	pmksa_cache_set_expiration(pmksa);
78 	struct rsn_pmksa_cache *pmksa = eloop_ctx;
79 	pmksa->sm->cur_pmksa = NULL;
80 	eapol_sm_request_reauth(pmksa->sm->eapol);
84 static void pmksa_cache_set_expiration(struct rsn_pmksa_cache *pmksa)
90 	eloop_cancel_timeout(pmksa_cache_expire, pmksa, NULL);
91 	eloop_cancel_timeout(pmksa_cache_reauth, pmksa, NULL);
92 	if (pmksa->pmksa == NULL)
95 	sec = pmksa->pmksa->expiration - now.sec;
98 	eloop_register_timeout(sec + 1, 0, pmksa_cache_expire, pmksa, NULL);
100 	entry = pmksa->sm->cur_pmksa ? pmksa->sm->cur_pmksa :
101 		pmksa_cache_get(pmksa, pmksa->sm->bssid, NULL);
103 		sec = pmksa->pmksa->reauth_time - now.sec;
106 		eloop_register_timeout(sec, 0, pmksa_cache_reauth, pmksa,
114  * @pmksa: Pointer to PMKSA cache data from pmksa_cache_init()
129 pmksa_cache_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len,
146 	entry->expiration = now.sec + pmksa->sm->dot11RSNAConfigPMKLifetime;
147 	entry->reauth_time = now.sec + pmksa->sm->dot11RSNAConfigPMKLifetime *
148 		pmksa->sm->dot11RSNAConfigPMKReauthThreshold / 100;
155 	pos = pmksa->pmksa;
169 				pmksa->pmksa = pos->next;
172 			if (pos == pmksa->sm->cur_pmksa) {
183 				pmksa->sm->cur_pmksa = NULL;
187 			pmksa_cache_free_entry(pmksa, pos, 1);
194 	if (pmksa->pmksa_count >= pmksa_cache_max_entries && pmksa->pmksa) {
196 		pos = pmksa->pmksa;
197 		pmksa->pmksa = pos->next;
201 		wpa_sm_remove_pmkid(pmksa->sm, pos->aa, pos->pmkid);
202 		pmksa_cache_free_entry(pmksa, pos, 0);
206 	pos = pmksa->pmksa;
215 		entry->next = pmksa->pmksa;
216 		pmksa->pmksa = entry;
217 		pmksa_cache_set_expiration(pmksa);
222 	pmksa->pmksa_count++;
225 	wpa_sm_add_pmkid(pmksa->sm, entry->aa, entry->pmkid);
233  * @pmksa: Pointer to PMKSA cache data from pmksa_cache_init()
235 void pmksa_cache_deinit(struct rsn_pmksa_cache *pmksa)
239 	if (pmksa == NULL)
242 	entry = pmksa->pmksa;
243 	pmksa->pmksa = NULL;
249 	pmksa_cache_set_expiration(pmksa);
250 	os_free(pmksa);
256  * @pmksa: Pointer to PMKSA cache data from pmksa_cache_init()
261 struct rsn_pmksa_cache_entry * pmksa_cache_get(struct rsn_pmksa_cache *pmksa,
264 	struct rsn_pmksa_cache_entry *entry = pmksa->pmksa;
278  * @pmksa: Pointer to PMKSA cache data from pmksa_cache_init()
282 void pmksa_cache_notify_reconfig(struct rsn_pmksa_cache *pmksa)
284 	struct rsn_pmksa_cache_entry *entry = pmksa->pmksa;
293 pmksa_cache_clone_entry(struct rsn_pmksa_cache *pmksa,
299 	new_entry = pmksa_cache_add(pmksa, old_entry->pmk, old_entry->pmk_len,
300 				    aa, pmksa->sm->own_addr,
315  * @pmksa: Pointer to PMKSA cache data from pmksa_cache_init()
325 pmksa_cache_get_opportunistic(struct rsn_pmksa_cache *pmksa, void *network_ctx,
328 	struct rsn_pmksa_cache_entry *entry = pmksa->pmksa;
334 			entry = pmksa_cache_clone_entry(pmksa, entry, aa);
386 	struct rsn_pmksa_cache *pmksa = sm->pmksa;
389 		sm->cur_pmksa = pmksa_cache_get(pmksa, NULL, pmkid);
391 		sm->cur_pmksa = pmksa_cache_get(pmksa, bssid, NULL);
393 		sm->cur_pmksa = pmksa_cache_get_opportunistic(pmksa,
407  * @pmksa: Pointer to PMKSA cache data from pmksa_cache_init()
415 int pmksa_cache_list(struct rsn_pmksa_cache *pmksa, char *buf, size_t len)
430 	entry = pmksa->pmksa;
464 	struct rsn_pmksa_cache *pmksa;
466 	pmksa = os_zalloc(sizeof(*pmksa));
467 	if (pmksa) {
468 		pmksa->free_cb = free_cb;
469 		pmksa->ctx = ctx;
470 		pmksa->sm = sm;
473 	return pmksa;