* Signals that a message has been received, which is supposed to be
* forwarded to another destination.
*
- * @param msg The complete message received.
+ * @param 'message_t* ONE msg' The complete message received.
*
- * @param payload The payload portion of the packet for this
+ * @param 'void* COUNT(len) payload' The payload portion of the packet for this
* protocol layer.
*
* @param len The length of the payload buffer.