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.
This commit is contained in:
oliverschmidt
parent
6ab3a6d1e3
commit
75f04995a9
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@ -29,66 +29,72 @@
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: rtl8019-drv.c,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
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* $Id: rtl8019-drv.c,v 1.2 2007/05/26 23:05:36 oliverschmidt Exp $
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*
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*/
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#include "net/packet-service.h"
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#include "contiki-net.h"
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#include "dev/rtl8019dev.h"
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#include "net/uip_arp.h"
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#include <stdio.h>
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static u8_t output(void);
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SERVICE(rtl8019_drv_service, packet_service, { output });
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PROCESS(rtl8019_drv_process, "RTL8019 driver");
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PROCESS_THREAD(rtl8019_drv_process, ev, data)
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{
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PROCESS_BEGIN();
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SERVICE_REGISTER(rtl8019_drv_service);
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RTL8019dev_init();
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while(1) {
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process_poll(&rtl8019_drv_process);
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PROCESS_WAIT_EVENT();
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uip_len = RTL8019dev_poll();
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if(uip_len > 0) {
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#include "net/uip-neighbor.h"
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#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
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/* A frame was avaliable (and is now read into the uip_buf), so
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we process it. */
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if(BUF->type == HTONS(UIP_ETHTYPE_IP)) {
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uip_arp_ipin();
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uip_len -= sizeof(struct uip_eth_hdr);
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tcpip_input();
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} else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) {
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uip_arp_arpin();
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if(uip_len > 0) {
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RTL8019dev_send();
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}
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}
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}
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}
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PROCESS_END();
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}
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PROCESS(rtl8019_process, "RTL8019 driver");
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/*---------------------------------------------------------------------------*/
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static u8_t
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output(void)
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u8_t
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rtl8019_output(void)
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{
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uip_arp_out();
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RTL8019dev_send();
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static void
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pollhandler(void)
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{
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process_poll(&rtl8019_process);
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uip_len = RTL8019dev_poll();
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if(uip_len > 0) {
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#if UIP_CONF_IPV6
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if(BUF->type == htons(UIP_ETHTYPE_IPV6)) {
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uip_neighbor_add(&IPBUF->srcipaddr, &BUF->src);
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tcpip_input();
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} else
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#endif /* UIP_CONF_IPV6 */
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if(BUF->type == htons(UIP_ETHTYPE_IP)) {
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uip_len -= sizeof(struct uip_eth_hdr);
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tcpip_input();
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} else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
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uip_arp_arpin();
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if(uip_len > 0) {
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RTL8019dev_send();
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}
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(rtl8019_process, ev, data)
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{
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PROCESS_POLLHANDLER(pollhandler());
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PROCESS_BEGIN();
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RTL8019dev_init();
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tcpip_set_outputfunc(rtl8019_output);
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process_poll(&rtl8019_process);
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PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
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RTL8019dev_exit();
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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@ -31,7 +31,7 @@
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: rtl8019-drv.h,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
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* $Id: rtl8019-drv.h,v 1.2 2007/05/26 23:05:36 oliverschmidt Exp $
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*
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*/
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#ifndef __RTL8019_DRV_H__
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@ -39,6 +39,8 @@
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#include "contiki.h"
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PROCESS_NAME(rtl8019_drv_process);
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PROCESS_NAME(rtl8019_process);
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u8_t rtl8019_output(void);
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#endif /* __RTL8019_DRV_H__ */
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@ -30,7 +30,7 @@
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void RTL8019dev_init(void)
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{
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initRTL8019();
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initRTL8019();
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}
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@ -54,24 +54,29 @@ void RTL8019dev_send(void)
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unsigned int RTL8019dev_poll(void)
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{
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unsigned int packetLength;
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unsigned int packetLength;
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packetLength = RTL8019beginPacketRetreive();
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packetLength = RTL8019beginPacketRetreive();
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// if there's no packet or an error - exit without ending the operation
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if( !packetLength )
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return 0;
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// if there's no packet or an error - exit without ending the operation
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if( !packetLength )
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return 0;
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// drop anything too big for the buffer
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if( packetLength > UIP_BUFSIZE )
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{
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RTL8019endPacketRetreive();
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return 0;
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}
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// drop anything too big for the buffer
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if( packetLength > UIP_BUFSIZE )
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{
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RTL8019endPacketRetreive();
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return 0;
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}
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// copy the packet data into the uIP packet buffer
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RTL8019retreivePacketData( uip_buf, packetLength );
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RTL8019endPacketRetreive();
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// copy the packet data into the uIP packet buffer
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RTL8019retreivePacketData( uip_buf, packetLength );
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RTL8019endPacketRetreive();
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return packetLength;
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return packetLength;
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}
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void RTL8019dev_exit(void)
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{
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}
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@ -57,4 +57,13 @@ void RTL8019dev_send(void);
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unsigned int RTL8019dev_poll(void);
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/*****************************************************************************
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* RTL8019dev_exit()
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* Created By: -
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* Date: -
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* Description: Final shutdown of the RTL8019
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*****************************************************************************/
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void RTL8019dev_exit(void);
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#endif /* __RTL8019DEV_H__ */
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@ -29,7 +29,7 @@
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*
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* This file is part of the Contiki OS
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*
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* $Id: ethernut-main.c,v 1.2 2006/06/20 21:23:10 adamdunkels Exp $
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* $Id: ethernut-main.c,v 1.3 2007/05/26 23:06:31 oliverschmidt Exp $
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*
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*/
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@ -43,7 +43,7 @@
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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PROCINIT(&etimer_process, &tcpip_process, &rtl8019_drv_process);
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PROCINIT(&etimer_process, &tcpip_process, &rtl8019_process);
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static const struct uip_eth_addr ethaddr = {{0x00,0x06,0x98,0x01,0x02,0x29}};
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