osd-contiki/cpu/avr/dev/rtl8019-drv.c
oliverschmidt 75f04995a9 Changed packet drivers from services to plain processes.
Now tcpip_output() is a function pointer that is supposed to be set via the macro tcpip_set_outputfunc(). Packet drivers do so on process startup.

Thus if there are several packet drivers in a Contiki system the one started last is the one actually used. This behaviour is especially useful for the 'IP forwarding' "meta" packet driver.
2007-05-26 23:05:36 +00:00

101 lines
3.2 KiB
C

/*-----------------------------------------------------------------------------------*/
/*
* Copyright (c) 2001-2004, Adam Dunkels.
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the uIP TCP/IP stack.
*
* $Id: rtl8019-drv.c,v 1.2 2007/05/26 23:05:36 oliverschmidt Exp $
*
*/
#include "contiki-net.h"
#include "dev/rtl8019dev.h"
#include "net/uip-neighbor.h"
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
PROCESS(rtl8019_process, "RTL8019 driver");
/*---------------------------------------------------------------------------*/
u8_t
rtl8019_output(void)
{
uip_arp_out();
RTL8019dev_send();
return 0;
}
/*---------------------------------------------------------------------------*/
static void
pollhandler(void)
{
process_poll(&rtl8019_process);
uip_len = RTL8019dev_poll();
if(uip_len > 0) {
#if UIP_CONF_IPV6
if(BUF->type == htons(UIP_ETHTYPE_IPV6)) {
uip_neighbor_add(&IPBUF->srcipaddr, &BUF->src);
tcpip_input();
} else
#endif /* UIP_CONF_IPV6 */
if(BUF->type == htons(UIP_ETHTYPE_IP)) {
uip_len -= sizeof(struct uip_eth_hdr);
tcpip_input();
} else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
uip_arp_arpin();
/* If the above function invocation resulted in data that
should be sent out on the network, the global variable
uip_len is set to a value > 0. */
if(uip_len > 0) {
RTL8019dev_send();
}
}
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(rtl8019_process, ev, data)
{
PROCESS_POLLHANDLER(pollhandler());
PROCESS_BEGIN();
RTL8019dev_init();
tcpip_set_outputfunc(rtl8019_output);
process_poll(&rtl8019_process);
PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
RTL8019dev_exit();
PROCESS_END();
}
/*---------------------------------------------------------------------------*/