P2P: Do not expire peer entry if we are connected to the peer

Even though we may not update P2P peer entry while connected to the
peer as a P2P client, we should not be expiring a P2P peer entry while
that peer is the GO in a group where we are connected as a P2P client.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

src/p2p/p2p.c

@@ -62,6 +62,18 @@ static void p2p_expire_peers(struct p2p_data *p2p)
 	dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
 		if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
 			continue;
+
+		if (p2p->cfg->go_connected &&
+		    p2p->cfg->go_connected(p2p->cfg->cb_ctx,
+					   dev->info.p2p_device_addr)) {
+			/*
+			 * We are connected as a client to a group in which the
+			 * peer is the GO, so do not expire the peer entry.
+			 */
+			os_get_time(&dev->last_seen);
+			continue;
+		}
+
 		for (i = 0; i < p2p->num_groups; i++) {
 			if (p2p_group_is_client_connected(
 				    p2p->groups[i], dev->info.p2p_device_addr))

src/p2p/p2p.h

@@ -706,6 +706,15 @@ struct p2p_config {
 	 * local failure in transmitting the Invitation Request.
 	 */
 	void (*invitation_result)(void *ctx, int status, const u8 *bssid);
+
+	/**
+	 * go_connected - Check whether we are connected to a GO
+	 * @ctx: Callback context from cb_ctx
+	 * @dev_addr: P2P Device Address of a GO
+	 * Returns: 1 if we are connected as a P2P client to the specified GO
+	 * or 0 if not.
+	 */
+	int (*go_connected)(void *ctx, const u8 *dev_addr);
 };
 
 

wpa_supplicant/events.c

@@ -125,6 +125,9 @@ void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 	bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 	os_memset(wpa_s->bssid, 0, ETH_ALEN);
 	os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
+#ifdef CONFIG_P2P
+	os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
+#endif /* CONFIG_P2P */
 	wpa_s->current_bss = NULL;
 	wpa_s->assoc_freq = 0;
 #ifdef CONFIG_IEEE80211R

wpa_supplicant/p2p_supplicant.c

@@ -2207,6 +2207,26 @@ static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
 }
 
 
+static int wpas_go_connected(void *ctx, const u8 *dev_addr)
+{
+	struct wpa_supplicant *wpa_s = ctx;
+
+	for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
+		struct wpa_ssid *ssid = wpa_s->current_ssid;
+		if (ssid == NULL)
+			continue;
+		if (ssid->mode != WPAS_MODE_INFRA)
+			continue;
+		if (wpa_s->wpa_state != WPA_COMPLETED)
+			continue;
+		if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
+			return 1;
+	}
+
+	return 0;
+}
+
+
 /**
  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
  * @global: Pointer to global data from wpa_supplicant_init()
@@ -2266,6 +2286,7 @@ int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
 	p2p.invitation_received = wpas_invitation_received;
 	p2p.invitation_result = wpas_invitation_result;
 	p2p.get_noa = wpas_get_noa;
+	p2p.go_connected = wpas_go_connected;
 
 	os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
 	os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);