P2P: Set Invitation Type to 1 for GO inviting to a persistent group

When a GO is operating a persistent group and invites a peer that has
been a P2P client in that persistent group, the Invitation Type in the
Invitation Request frame can be set to 1 to indicate that this is a
reinvocation of a persistent group. Do this based on the maintained
list of P2P clients that have been provided the credentials to this
group.

Signed-hostap: Jouni Malinen <j@w1.fi>

wpa_supplicant/ctrl_iface.c

@@ -3053,7 +3053,7 @@ static int p2p_ctrl_peer(struct wpa_supplicant *wpa_s, char *cmd,
 		return pos - buf;
 	pos += res;
 
-	ssid = wpas_p2p_get_persistent(wpa_s, info->p2p_device_addr);
+	ssid = wpas_p2p_get_persistent(wpa_s, info->p2p_device_addr, NULL, 0);
 	if (ssid) {
 		res = os_snprintf(pos, end - pos, "persistent=%d\n", ssid->id);
 		if (res < 0 || res >= end - pos)

wpa_supplicant/p2p_supplicant.c

@@ -3736,6 +3736,7 @@ int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
 	enum p2p_invite_role role;
 	u8 *bssid = NULL;
 	struct wpa_ssid *ssid;
+	int persistent;
 
 	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 		if (os_strcmp(wpa_s->ifname, ifname) == 0)
@@ -3753,6 +3754,10 @@ int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
 		return -1;
 	}
 
+	persistent = ssid->p2p_persistent_group &&
+		wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
+					ssid->ssid, ssid->ssid_len);
+
 	if (ssid->mode == WPAS_MODE_P2P_GO) {
 		role = P2P_INVITE_ROLE_ACTIVE_GO;
 		bssid = wpa_s->own_addr;
@@ -3775,14 +3780,14 @@ int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 		return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
 					  ssid->ssid, ssid->ssid_len,
-					  go_dev_addr, 0);
+					  go_dev_addr, persistent);
 
 	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 		return -1;
 
 	return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
 			  ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
-			  go_dev_addr, 0);
+			  go_dev_addr, persistent);
 }
 
 
@@ -4382,7 +4387,8 @@ void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
 
 
 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
-					  const u8 *addr)
+					  const u8 *addr, const u8 *ssid,
+					  size_t ssid_len)
 {
 	struct wpa_ssid *s;
 	size_t i;
@@ -4390,6 +4396,10 @@ struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
 	for (s = wpa_s->conf->ssid; s; s = s->next) {
 		if (s->disabled != 2)
 			continue;
+		if (ssid &&
+		    (ssid_len != s->ssid_len ||
+		     os_memcmp(ssid, s->ssid, ssid_len) != 0))
+			continue;
 		if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
 			return s; /* peer is GO in the persistent group */
 		if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)

wpa_supplicant/p2p_supplicant.h

@@ -133,7 +133,8 @@ int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s);
 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
 			      struct wpa_ssid *ssid);
 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
-					  const u8 *addr);
+					  const u8 *addr, const u8 *ssid,
+					  size_t ssid_len);
 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
 				       const u8 *addr);