net_stack.h

嵌入式操作系统内核

/* -*- Mode: C; tab-width:4 -*- */
/* ex: set ts=4 shiftwidth=4 softtabstop=4 cindent: */
/*
 * Copyright (c) 2003 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgement:
 *       This product includes software developed by Networked &
 *       Embedded Systems Lab at UCLA
 * 4. Neither the name of the University nor that of the Laboratory
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
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/**
 * @brief inline functions for message handling in the stack
 * @author Simon Han ([e-mail])
 *
 * In SOS, stack is part of operating system.
 * Therefore, stack helps kernel to do message filtering.
 * Note that this routine was originally done in post and call logic.
 * But most of message filterings are meanful for messages from the 
 * network.  
 */


#ifndef _NET_STACK_H
#define _NET_STACK_H

#include <message_queue.h>
#include <sos_sched.h>
#include <sos_info.h>

static inline void handle_incoming_msg(Message *msg, uint16_t channel_flag)
{
  //   DEBUG("<NET STACK> Received message from network\n");
  msg->flag |= SOS_MSG_FROM_NETWORK | channel_flag;
  msg->daddr = entohs(msg->daddr);
  msg->saddr = entohs(msg->saddr);
  sched_msg_alloc(msg);
}

#endif