Fix P2P redirection of global ctrl_iface SET command

The previous version prevented all use of wpas_global_ctrl_iface_set().
That's not desirable since there may be more global parameters added in
the future. Instead, try to use the global version first and redirect to
P2P interface only if the global version returns an error.

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

wpa_supplicant/ctrl_iface.c

@@ -6821,7 +6821,6 @@ static char * wpas_global_ctrl_iface_redir_p2p(struct wpa_global *global,
 #endif /* ANDROID */
 		"GET_NETWORK ",
 		"REMOVE_NETWORK ",
-		"SET ",
 		"P2P_FIND ",
 		"P2P_CONNECT ",
 		"P2P_LISTEN ",
@@ -6921,6 +6920,9 @@ static int wpas_global_ctrl_iface_set(struct wpa_global *global, char *cmd)
 	}
 #endif /* CONFIG_WIFI_DISPLAY */
 
+	/* Restore cmd to its original value to allow redirection */
+	value[-1] = ' ';
+
 	return -1;
 }
 
@@ -7064,8 +7066,19 @@ char * wpa_supplicant_global_ctrl_iface_process(struct wpa_global *global,
 	} else if (os_strcmp(buf, "RESUME") == 0) {
 		wpas_notify_resume(global);
 	} else if (os_strncmp(buf, "SET ", 4) == 0) {
-		if (wpas_global_ctrl_iface_set(global, buf + 4))
+		if (wpas_global_ctrl_iface_set(global, buf + 4)) {
+#ifdef CONFIG_P2P
+			if (global->p2p_init_wpa_s) {
+				os_free(reply);
+				/* Check if P2P redirection would work for this
+				 * command. */
+				return wpa_supplicant_ctrl_iface_process(
+					global->p2p_init_wpa_s,
+					buf, resp_len);
+			}
+#endif /* CONFIG_P2P */
 			reply_len = -1;
+		}
 #ifndef CONFIG_NO_CONFIG_WRITE
 	} else if (os_strcmp(buf, "SAVE_CONFIG") == 0) {
 		if (wpas_global_ctrl_iface_save_config(global))