59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#include "contiki.h"
|
||
|
|
|
||
|
|
#include "net/uip.h"
|
||
|
|
#include "net/uip-fw.h"
|
||
|
|
#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
|
||
|
|
|
||
|
|
#include "dev/leds.h"
|
||
|
|
|
||
|
|
#include "dev/cc2420.h"
|
||
|
|
|
||
|
|
#define in_my_network(a) \
|
||
|
|
(((a[0] ^ cc2420if.ipaddr[0]) & cc2420if.netmask[0]) == 0 && \
|
||
|
|
((a[1] ^ cc2420if.ipaddr[1]) & cc2420if.netmask[1]) == 0)
|
||
|
|
|
||
|
|
u8_t
|
||
|
|
cc2420_send_ip(void)
|
||
|
|
{
|
||
|
|
struct hdr_802_15 h;
|
||
|
|
|
||
|
|
u8_t color = (cc2420_ack_received) ? LEDS_BLUE : LEDS_RED;
|
||
|
|
leds_toggle(color);
|
||
|
|
|
||
|
|
h.len = MAC_HDR_LEN + uip_len + 2; /* Including footer[2]. */
|
||
|
|
h.fc0 = FC0_TYPE_DATA | FC0_REQ_ACK | FC0_INTRA_PAN;
|
||
|
|
h.fc1 = FC1_DST_16 | FC1_SRC_16;
|
||
|
|
|
||
|
|
h.src = uip_hostaddr[1];
|
||
|
|
if (BUF->destipaddr[0] == 0xffff && BUF->destipaddr[1] == 0xffff)
|
||
|
|
h.dst = 0xffff;
|
||
|
|
else {
|
||
|
|
uip_ipaddr_t *next_gw;
|
||
|
|
|
||
|
|
if (in_my_network(BUF->destipaddr))
|
||
|
|
next_gw = &BUF->destipaddr;
|
||
|
|
else
|
||
|
|
next_gw = &uip_draddr; /* Default router. */
|
||
|
|
|
||
|
|
if (cc2420_check_remote((*next_gw)[1]) == 1)
|
||
|
|
h.dst = 0xffff; /* remote, use bcast */
|
||
|
|
else
|
||
|
|
h.dst = (*next_gw)[1]; /* local or unknown, use ucast */
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Don't request MAC level ACKs for broadcast packets. */
|
||
|
|
if (h.dst == 0xffff)
|
||
|
|
h.fc0 &= ~FC0_REQ_ACK;
|
||
|
|
|
||
|
|
if (cc2420_send(&h, 10, &uip_buf[UIP_LLH_LEN], uip_len) < 0) {
|
||
|
|
printf("cc2420_send_ip too big uip_len=%d\n", uip_len);
|
||
|
|
return UIP_FW_TOOLARGE;
|
||
|
|
}
|
||
|
|
|
||
|
|
leds_toggle(color);
|
||
|
|
|
||
|
|
return UIP_FW_OK;
|
||
|
|
}
|