P2P: Remove client group on Deauthentication reason code 3

The GO can indicate that the P2P Group session is ending by sending a
Deauthentication frame with reason code 3 (Deauthenticated because
sending STA is leaving) based on P2P specification section 3.2.9. Use
this reason code to remove the P2P client group without waiting for the
group idle timeout.

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

wpa_supplicant/events.c

@@ -2124,7 +2124,8 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 			wpas_p2p_disassoc_notif(
 				wpa_s, data->disassoc_info.addr, reason_code,
 				data->disassoc_info.ie,
-				data->disassoc_info.ie_len);
+				data->disassoc_info.ie_len,
+				locally_generated);
 #endif /* CONFIG_P2P */
 		}
 		if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
@@ -2152,13 +2153,6 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 					    "Deauthentication frame IE(s)",
 					    data->deauth_info.ie,
 					    data->deauth_info.ie_len);
-#ifdef CONFIG_P2P
-				wpas_p2p_deauth_notif(
-					wpa_s, data->deauth_info.addr,
-					reason_code,
-					data->deauth_info.ie,
-					data->deauth_info.ie_len);
-#endif /* CONFIG_P2P */
 			}
 		}
 #ifdef CONFIG_AP
@@ -2175,6 +2169,15 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 #endif /* CONFIG_AP */
 		wpa_supplicant_event_disassoc(wpa_s, reason_code,
 					      locally_generated);
+#ifdef CONFIG_P2P
+		if (event == EVENT_DEAUTH && data) {
+			wpas_p2p_deauth_notif(wpa_s, data->deauth_info.addr,
+					      reason_code,
+					      data->deauth_info.ie,
+					      data->deauth_info.ie_len,
+					      locally_generated);
+		}
+#endif /* CONFIG_P2P */
 		break;
 	case EVENT_MICHAEL_MIC_FAILURE:
 		wpa_supplicant_event_michael_mic_failure(wpa_s, data);

wpa_supplicant/p2p_supplicant.c

@@ -255,6 +255,9 @@ static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
 	case P2P_GROUP_REMOVAL_UNAVAILABLE:
 		reason = " reason=UNAVAILABLE";
 		break;
+	case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
+		reason = " reason=GO_ENDING_SESSION";
+		break;
 	default:
 		reason = "";
 		break;
@@ -4031,26 +4034,42 @@ static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
 
 
 void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
-			   u16 reason_code, const u8 *ie, size_t ie_len)
+			   u16 reason_code, const u8 *ie, size_t ie_len,
+			   int locally_generated)
 {
 	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 		return;
 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 		return;
 
-	p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
+	if (!locally_generated)
+		p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
+				 ie_len);
+
+	if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
+	    wpa_s->current_ssid &&
+	    wpa_s->current_ssid->p2p_group &&
+	    wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
+		wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
+			   "session is ending");
+		wpa_s->removal_reason = P2P_GROUP_REMOVAL_GO_ENDING_SESSION;
+		wpas_p2p_group_delete(wpa_s);
+	}
 }
 
 
 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
-			     u16 reason_code, const u8 *ie, size_t ie_len)
+			     u16 reason_code, const u8 *ie, size_t ie_len,
+			     int locally_generated)
 {
 	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 		return;
 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 		return;
 
-	p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
+	if (!locally_generated)
+		p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
+				   ie_len);
 }
 
 

wpa_supplicant/p2p_supplicant.h

@@ -105,9 +105,11 @@ int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
 			unsigned int interval);
 void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
-			   u16 reason_code, const u8 *ie, size_t ie_len);
+			   u16 reason_code, const u8 *ie, size_t ie_len,
+			   int locally_generated);
 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
-			     u16 reason_code, const u8 *ie, size_t ie_len);
+			     u16 reason_code, const u8 *ie, size_t ie_len,
+			     int locally_generated);
 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s);
 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
 		     int duration);

wpa_supplicant/wpa_supplicant_i.h

@@ -503,7 +503,8 @@ struct wpa_supplicant {
 		P2P_GROUP_REMOVAL_UNKNOWN,
 		P2P_GROUP_REMOVAL_REQUESTED,
 		P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
-		P2P_GROUP_REMOVAL_UNAVAILABLE
+		P2P_GROUP_REMOVAL_UNAVAILABLE,
+		P2P_GROUP_REMOVAL_GO_ENDING_SESSION
 	} removal_reason;
 
 	unsigned int p2p_cb_on_scan_complete:1;