Make proactive key caching working again

Function 'wpa_sm_set_config' used the argument 'config' as the network
context which is a pointer to a local variable of the function
'wpa_supplicant_rsn_supp_set_config'.

This is one reason why no proactive key was generated. This network
context never matched with the network context saved in the pmksa cache
entries.

The structure 'rsn_supp_config' has already a member 'network_ctx' which
is now filled in by this patch with 'ssid'.

Signed-off-by: Michael Bernhard <michael.bernhard@bfh.ch>

src/rsn_supp/wpa.c

@@ -1993,8 +1993,8 @@ void wpa_sm_set_config(struct wpa_sm *sm, struct rsn_supp_config *config)
 	if (!sm)
 		return;
 
-	sm->network_ctx = config;
 	if (config) {
+		sm->network_ctx = config->network_ctx;
 		sm->peerkey_enabled = config->peerkey_enabled;
 		sm->allowed_pairwise_cipher = config->allowed_pairwise_cipher;
 		sm->proactive_key_caching = config->proactive_key_caching;
@@ -2006,6 +2006,7 @@ void wpa_sm_set_config(struct wpa_sm *sm, struct rsn_supp_config *config)
 		} else
 			sm->ssid_len = 0;
 	} else {
+		sm->network_ctx = NULL;
 		sm->peerkey_enabled = 0;
 		sm->allowed_pairwise_cipher = 0;
 		sm->proactive_key_caching = 0;

wpa_supplicant/wpas_glue.c

@@ -604,6 +604,7 @@ void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
 	struct rsn_supp_config conf;
 	if (ssid) {
 		os_memset(&conf, 0, sizeof(conf));
+		conf.network_ctx = ssid;
 		conf.peerkey_enabled = ssid->peerkey;
 		conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
 #ifdef IEEE8021X_EAPOL