P2P: Store SSID of the group in p2p_group data

This can be used with P2P management operations that need to verify
whether the local device is operating a specific group based on
P2P Group ID attribute from a peer.

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

src/p2p/p2p.h

@@ -1261,6 +1261,16 @@ struct p2p_group_config {
 	 */
 	unsigned int max_clients;
 
+	/**
+	 * ssid - Group SSID
+	 */
+	u8 ssid[32];
+
+	/**
+	 * ssid_len - Length of SSID
+	 */
+	size_t ssid_len;
+
 	/**
 	 * cb_ctx - Context to use with callback functions
 	 */

src/p2p/p2p_group.c

@@ -731,3 +731,15 @@ int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr)
 
 	return 0;
 }
+
+
+int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
+				size_t group_id_len)
+{
+	if (group_id_len != ETH_ALEN + group->cfg->ssid_len)
+		return 0;
+	if (os_memcmp(group_id, group->p2p->cfg->dev_addr, ETH_ALEN) != 0)
+		return 0;
+	return os_memcmp(group_id + ETH_ALEN, group->cfg->ssid,
+			 group->cfg->ssid_len) == 0;
+}

src/p2p/p2p_i.h

@@ -549,6 +549,8 @@ const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
 u8 p2p_group_presence_req(struct p2p_group *group,
 			  const u8 *client_interface_addr,
 			  const u8 *noa, size_t noa_len);
+int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
+				size_t group_id_len);
 
 
 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);

wpa_supplicant/ap.c

@@ -540,9 +540,8 @@ int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 		hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 #ifdef CONFIG_P2P
 		hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
-		hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
-			wpa_s, ssid->p2p_persistent_group,
-			ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
+		hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(wpa_s,
+								    ssid);
 #endif /* CONFIG_P2P */
 		hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 		hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;

wpa_supplicant/p2p_supplicant.c

@@ -3665,8 +3665,7 @@ static void wpas_p2p_idle_update(void *ctx, int idle)
 
 
 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
-				       int persistent_group,
-				       int group_formation)
+				       struct wpa_ssid *ssid)
 {
 	struct p2p_group *group;
 	struct p2p_group_config *cfg;
@@ -3680,9 +3679,9 @@ struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
 	if (cfg == NULL)
 		return NULL;
 
-	if (persistent_group && wpa_s->conf->persistent_reconnect)
+	if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
 		cfg->persistent_group = 2;
-	else if (persistent_group)
+	else if (ssid->p2p_persistent_group)
 		cfg->persistent_group = 1;
 	os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
 	if (wpa_s->max_stations &&
@@ -3690,6 +3689,8 @@ struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
 		cfg->max_clients = wpa_s->max_stations;
 	else
 		cfg->max_clients = wpa_s->conf->max_num_sta;
+	os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
+	cfg->ssid_len = ssid->ssid_len;
 	cfg->cb_ctx = wpa_s;
 	cfg->ie_update = wpas_p2p_ie_update;
 	cfg->idle_update = wpas_p2p_idle_update;
@@ -3697,7 +3698,7 @@ struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
 	group = p2p_group_init(wpa_s->global->p2p, cfg);
 	if (group == NULL)
 		os_free(cfg);
-	if (!group_formation)
+	if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
 		p2p_group_notif_formation_done(group);
 	wpa_s->p2p_group = group;
 	return group;

wpa_supplicant/p2p_supplicant.h

@@ -32,8 +32,7 @@ int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
 				  struct wpa_ssid *ssid, int addr_allocated,
 				  int freq);
 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
-				       int persistent_group,
-				       int group_formation);
+				       struct wpa_ssid *ssid);
 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
 			  int registrar);
 enum wpas_p2p_prov_disc_use {