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Added the ability to send packets to an external network

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This commit is contained in:
adamdunkels 2008-02-03 20:56:07 +00:00
parent 53f0b7feb8
commit f1bec7b955
2 changed files with 62 additions and 9 deletions
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57
core/net/uip-over-mesh.c
View file

@ -28,12 +28,12 @@
*
* This file is part of the Contiki operating system.
*
* $Id: uip-over-mesh.c,v 1.5 2007/08/30 14:39:17 matsutsuka Exp $
* $Id: uip-over-mesh.c,v 1.6 2008/02/03 20:56:07 adamdunkels Exp $
*/
/**
* \file
* Code for tunnelling uIP packets over the mesh routing module
* Code for tunnelling uIP packets over the Rime mesh routing module
* \author
* Adam Dunkels <adam@sics.se>
*/
@ -52,7 +52,7 @@ static rimeaddr_t queued_receiver;
static struct route_discovery_conn route_discovery;
static struct uc_conn dataconn;
#define DEBUG 0
#define DEBUG 1
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
@ -60,6 +60,12 @@ static struct uc_conn dataconn;
#define PRINTF(...)
#endif
#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
static struct uip_fw_netif *gw_netif;
static rimeaddr_t gateway;
static uip_ipaddr_t netaddr, netmask;
/*---------------------------------------------------------------------------*/
static void
recv_data(struct uc_conn *c, rimeaddr_t *from)
@ -119,10 +125,10 @@ void
uip_over_mesh_init(u16_t channels)
{
/* printf("Our address is %d.%d (%d.%d.%d.%d)\n",
printf("Our address is %d.%d (%d.%d.%d.%d)\n",
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
uip_hostaddr.u8[0], uip_hostaddr.u8[1],
uip_hostaddr.u8[2], uip_hostaddr.u8[3]); */
uip_hostaddr.u8[2], uip_hostaddr.u8[3]);
uc_open(&dataconn, channels, &data_callbacks);
route_discovery_open(&route_discovery, CLOCK_SECOND / 4,
@ -142,7 +148,27 @@ uip_over_mesh_send(void)
queue the packet and send out a route request for the final
receiver of the packet. */
receiver.u16[0] = ((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr.u16[1];
/* Packets destined to this network is sent using mesh, whereas
packets destined to a network outside this network is sent towards
the gateway node. */
if(uip_ipaddr_maskcmp(&BUF->destipaddr, &netaddr, &netmask)) {
receiver.u8[0] = BUF->destipaddr.u8[2];
receiver.u8[1] = BUF->destipaddr.u8[3];
} else {
if(rimeaddr_cmp(&gateway, &rimeaddr_node_addr)) {
PRINTF("I am gateway, should forward over a local interface\n");
if(gw_netif != NULL) {
return gw_netif->output();
}
return UIP_FW_DROPPED;
} else if(rimeaddr_cmp(&gateway, &rimeaddr_null)) {
PRINTF("No gateway setup, dropping packet\n");
return UIP_FW_OK;
} else {
rimeaddr_copy(&receiver, &gateway);
}
}
PRINTF("uIP over mesh send to %d.%d with len %d\n",
receiver.u8[0], receiver.u8[1],
@ -168,3 +194,22 @@ uip_over_mesh_send(void)
return UIP_FW_OK;
}
/*---------------------------------------------------------------------------*/
void
uip_over_mesh_set_gateway_netif(struct uip_fw_netif *n)
{
gw_netif = n;
}
/*---------------------------------------------------------------------------*/
void
uip_over_mesh_set_gateway(rimeaddr_t *gw)
{
rimeaddr_copy(&gateway, gw);
}
/*---------------------------------------------------------------------------*/
void
uip_over_mesh_set_net(uip_ipaddr_t *addr, uip_ipaddr_t *mask)
{
uip_ipaddr_copy(&netaddr, addr);
uip_ipaddr_copy(&netmask, mask);
}
/*---------------------------------------------------------------------------*/

12
core/net/uip-over-mesh.h
View file

@ -28,12 +28,12 @@
*
* This file is part of the Contiki operating system.
*
* $Id: uip-over-mesh.h,v 1.1 2007/03/22 18:58:40 adamdunkels Exp $
* $Id: uip-over-mesh.h,v 1.2 2008/02/03 20:56:07 adamdunkels Exp $
*/
/**
* \file
* A brief description of what this file is.
* Header file for tunnelling uIP over Rime mesh
* \author
* Adam Dunkels <adam@sics.se>
*/
@ -41,7 +41,15 @@
#ifndef __UIP_OVER_MESH_H__
#define __UIP_OVER_MESH_H__
#include "net/uip.h"
#include "net/uip-fw.h"
#include "net/rime.h"
void uip_over_mesh_init(u16_t channels);
u8_t uip_over_mesh_send(void);
void uip_over_mesh_set_gateway_netif(struct uip_fw_netif *netif);
void uip_over_mesh_set_gateway(rimeaddr_t *gw);
void uip_over_mesh_set_net(uip_ipaddr_t *addr, uip_ipaddr_t *mask);
#endif /* __UIP-OVER-MESH_H__ */