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updated uip uaodv radio driver

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This commit is contained in:
fros4943 2007-07-17 23:02:21 +00:00
parent 598f4e94cd
commit 3768b44804
2 changed files with 188 additions and 217 deletions
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3
platform/cooja/init-net-uip-uaodv.c
View file

@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: init-net-uip-uaodv.c,v 1.2 2007/05/21 14:52:15 fros4943 Exp $ * $Id: init-net-uip-uaodv.c,v 1.3 2007/07/17 23:02:22 fros4943 Exp $
*/ */
#include "contiki.h" #include "contiki.h"
@ -49,6 +49,7 @@ init_net(void)
{ {
uip_init(); uip_init();
uip_fw_init(); uip_fw_init();
tcpip_set_forwarding(1);
process_start(&tcpip_process, NULL); process_start(&tcpip_process, NULL);
process_start(&uip_fw_process, NULL); process_start(&uip_fw_process, NULL);

382
platform/cooja/net/radio-uip-uaodv.c
View file

@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* @(#)$Id: radio-uip-uaodv.c,v 1.3 2007/07/16 07:40:55 fros4943 Exp $ * @(#)$Id: radio-uip-uaodv.c,v 1.4 2007/07/17 23:02:21 fros4943 Exp $
*/ */
#include "radio-uip-uaodv.h" #include "radio-uip-uaodv.h"
@ -37,60 +37,65 @@
#include "net/uaodv.h" #include "net/uaodv.h"
#include "net/uaodv-rt.h" #include "net/uaodv-rt.h"
#include "net/uaodv-def.h" #include "net/uaodv-def.h"
#include "lib/crc16.h"
#include "list.h"
#include <string.h> #include <string.h>
#include <stdio.h> #include <stdio.h>
#define UNICAST_ACKED 1 /* Define to acknowledge unicast packets */ /*
#define BAD_REPLY_ON_NO_ROUTE 0 /* TODO */ { // DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT
uip_ipaddr_t *DEST = &packet->finaldest;
#define uip_udp_sender() (&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->srcipaddr) printf("%d.%d.%d.%d: XXXXX radio_uip_uaodv.c bad dest due to no ack %d.%d.%d.%d\n",
uip_ipaddr1(&uip_hostaddr), uip_ipaddr2(&uip_hostaddr), uip_ipaddr3(&uip_hostaddr), uip_ipaddr4(&uip_hostaddr),
#define HEADER_ID_LENGTH strlen(uniqueFwdHeader) uip_ipaddr1(DEST), uip_ipaddr2(DEST), uip_ipaddr3(DEST), uip_ipaddr4(DEST));
#define HEADER_NEXT_FWD HEADER_ID_LENGTH fflush(stdout);
#define HEADER_LENGTH HEADER_NEXT_FWD + 4 } // DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT - DEBUG OUTPUT
*/
#if UNICAST_ACKED /* Packet buffer size and retransmission settings */
#define MAX_BUFFERED_PACKETS 10
#define MAX_RETRANSMISSIONS_RREP 16
#define MAX_RETRANSMISSIONS_UNICAST 16
#include "lib/crc16.h" /* Forward packet (header) */
#include "list.h" #define FWD_ID "fWd:"
#define FWD_ID_LENGTH 4
#define FWD_NEXT_IP FWD_ID_LENGTH
#define FWD_PACKET_LENGTH (FWD_NEXT_IP + 4)
/* Acknowledgement packet */
#define ACK_ID "aCk"
#define ACK_ID_LENGTH 3
#define ACK_CRC ACK_ID_LENGTH
#define ACK_PACKET_LENGTH (ACK_ID_LENGTH + 2)
enum { enum {
EVENT_SEND_ACK EVENT_SEND_ACK
}; };
struct bufferedPacket { struct buf_packet {
struct bufferedPacket *next; struct buf_packet *next;
u8_t data[UIP_BUFSIZE]; u8_t data[UIP_BUFSIZE];
int len; int len;
u8_t resends; u8_t resends;
u8_t acked; u8_t acked;
u8_t want_ack;
u16_t crc; u16_t crc;
uip_ipaddr_t finaldest; uip_ipaddr_t finaldest;
struct etimer etimer; struct etimer etimer;
}; };
LIST(bufferedPackets); LIST(buf_packet_list);
MEMB(bufferedPacketsMEMB, struct bufferedPacket, 10); MEMB(buf_packet_mem, struct buf_packet, MAX_BUFFERED_PACKETS);
PROCESS(radio_uip_ack_process, "radio uIP uAODV ack process"); PROCESS(radio_uip_process, "radio uIP uAODV process");
#endif
static const char* uniqueFwdHeader = "fWd:";
#if UNICAST_ACKED
static const char* uniqueAckHeader = "aCk";
#define ACK_HEADER_LENGTH 3
#define ACK_LENGTH ACK_HEADER_LENGTH + 2
#endif
static const struct radio_driver *radio; static const struct radio_driver *radio;
static struct uaodv_rt_entry *route;
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
#if UNICAST_ACKED int radio_uip_buffer_outgoing_packet(u8_t *buf, int len, uip_ipaddr_t *dest, int max_sends);
int radio_uip_wait_for_ack(u8_t *buf, int len, uip_ipaddr_t *dest);
int radio_uip_is_ack(u8_t *buf, int len); int radio_uip_is_ack(u8_t *buf, int len);
#endif
int radio_uip_uaodv_add_header(u8_t *buf, int len, uip_ipaddr_t *addr); int radio_uip_uaodv_add_header(u8_t *buf, int len, uip_ipaddr_t *addr);
int radio_uip_uaodv_remove_header(u8_t *buf, int len); int radio_uip_uaodv_remove_header(u8_t *buf, int len);
void radio_uip_uaodv_change_header(u8_t *buf, int len, uip_ipaddr_t *addr); void radio_uip_uaodv_change_header(u8_t *buf, int len, uip_ipaddr_t *addr);
@ -102,61 +107,61 @@ int radio_uip_uaodv_dest_is_me(u8_t *buf, int len);
int radio_uip_uaodv_dest_port(u8_t *buf, int len); int radio_uip_uaodv_dest_port(u8_t *buf, int len);
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
#if UNICAST_ACKED /* Main process - handles (re)transmissions and acks */
PROCESS_THREAD(radio_uip_ack_process, ev, data) PROCESS_THREAD(radio_uip_process, ev, data)
{ {
struct bufferedPacket *bufPacket; struct buf_packet *packet;
PROCESS_BEGIN(); PROCESS_BEGIN();
while(1) { while(1) {
PROCESS_YIELD(); PROCESS_YIELD();
/* We should either send an ack, or resend a packet */
if(ev == EVENT_SEND_ACK) { if(ev == EVENT_SEND_ACK) {
char ackPacket[ACK_LENGTH];
/* Prepare and send ack */ /* Prepare and send ack for given 16-bit CRC */
memcpy(ackPacket, uniqueAckHeader, ACK_HEADER_LENGTH); char ackPacket[ACK_PACKET_LENGTH];
memcpy(&ackPacket[ACK_HEADER_LENGTH], &data, 2); memcpy(ackPacket, ACK_ID, ACK_ID_LENGTH);
radio->send(ackPacket, ACK_LENGTH); memcpy(&ackPacket[ACK_CRC], &data, 2);
radio->send(ackPacket, ACK_PACKET_LENGTH);
} else if(ev == PROCESS_EVENT_TIMER) { } else if(ev == PROCESS_EVENT_TIMER) {
/* Locate which packet acknowledgement timed out */ /* Locate which packet acknowledgement timed out */
for(bufPacket = list_head(bufferedPackets); for(packet = list_head(buf_packet_list);
bufPacket != NULL; packet != NULL;
bufPacket = bufPacket->next) { packet = packet->next) {
if (etimer_expired(&bufPacket->etimer)) { if (etimer_expired(&packet->etimer)) {
if (bufPacket->acked) { if (packet->acked) {
/* This packet was already acknowledged! */ /* Already acked packet, remove silently */
list_remove(bufferedPackets, bufPacket); list_remove(buf_packet_list, packet);
memb_free(&bufferedPacketsMEMB, bufPacket); memb_free(&buf_packet_mem, packet);
} else if (bufPacket->resends < 3) {
/* Resend packet a number of times */ } else if (packet->resends > 0) {
bufPacket->resends++; /* Resend packet */
packet->resends--;
etimer_set(&packet->etimer, CLOCK_SECOND * 1);
radio->send(packet->data, packet->len);
/* TODO Compress packets? */
radio->send(bufPacket->data, bufPacket->len);
etimer_restart(&bufPacket->etimer);
} else { } else {
/* Too many resends, give up */ /* Packet was resent maximum number of times */
/* TODO: Report non-delivered packet with bad dest? */
uaodv_bad_dest(&bufPacket->finaldest); /* If an ack was expected, flag destination to bad */
list_remove(bufferedPackets, bufPacket); if (packet->want_ack && !uip_ipaddr_cmp(&packet->finaldest, &uip_broadcast_addr)) {
memb_free(&bufferedPacketsMEMB, bufPacket); uaodv_bad_dest(&packet->finaldest);
}
}
}
} }
list_remove(buf_packet_list, packet);
memb_free(&buf_packet_mem, packet);
}
}
}
}
} }
PROCESS_END(); PROCESS_END();
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
#endif
static void static void
receiver(const struct radio_driver *d) receiver(const struct radio_driver *d)
{ {
@ -165,39 +170,14 @@ receiver(const struct radio_driver *d)
return; return;
} }
#if UNICAST_ACKED /* Detect and handle acknowledgements */
/* Detect and parse acknowledgements */
if (radio_uip_is_ack(&uip_buf[UIP_LLH_LEN], uip_len)) { if (radio_uip_is_ack(&uip_buf[UIP_LLH_LEN], uip_len)) {
radio_uip_handle_ack(&uip_buf[UIP_LLH_LEN], uip_len); radio_uip_handle_ack(&uip_buf[UIP_LLH_LEN], uip_len);
return; return;
} }
#endif
#if UNICAST_ACKED /* If no uAODV header, receive as usual */
/* uAODV RREP and RERR messages should be acked as soon as possible */
if (radio_uip_uaodv_dest_is_me(&uip_buf[UIP_LLH_LEN], uip_len) &&
radio_uip_uaodv_dest_port(&uip_buf[UIP_LLH_LEN], uip_len) == HTONS(UAODV_UDPPORT)) {
struct uaodv_msg *m = (struct uaodv_msg *)&uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
if (m->type == UAODV_RREP_TYPE || m->type == UAODV_RERR_TYPE) {
u16_t crc;
crc = radio_uip_calc_crc(&uip_buf[UIP_LLH_LEN], uip_len);
process_post(&radio_uip_ack_process, EVENT_SEND_ACK, crc);
}
}
#endif
/* If no uAODV header, receive as usual (compatibility) */
if (!radio_uip_uaodv_header_exists(&uip_buf[UIP_LLH_LEN], uip_len)) { if (!radio_uip_uaodv_header_exists(&uip_buf[UIP_LLH_LEN], uip_len)) {
//uip_len = hc_inflate(&uip_buf[UIP_LLH_LEN], uip_len);
tcpip_input();
return;
}
/* If broadcast packet, strip header and receive without forwarding */
if (radio_uip_uaodv_fwd_is_broadcast(&uip_buf[UIP_LLH_LEN], uip_len)) {
/* Strip header and receive */
uip_len = radio_uip_uaodv_remove_header(&uip_buf[UIP_LLH_LEN], uip_len);
//uip_len = hc_inflate(&uip_buf[UIP_LLH_LEN], uip_len);
tcpip_input(); tcpip_input();
return; return;
} }
@ -207,111 +187,83 @@ receiver(const struct radio_driver *d)
return; return;
} }
/* If we are final destination, strip header and receive */
if (radio_uip_uaodv_dest_is_me(&uip_buf[UIP_LLH_LEN + HEADER_LENGTH], uip_len)) {
#if UNICAST_ACKED
{ {
/* Unicast packets should be acked as soon as possible */ /* Send ack as soon as possible */
u16_t crc; u16_t crc;
crc = radio_uip_calc_crc(&uip_buf[UIP_LLH_LEN], uip_len); crc = radio_uip_calc_crc(&uip_buf[UIP_LLH_LEN], uip_len);
process_post(&radio_uip_ack_process, EVENT_SEND_ACK, crc); process_post(&radio_uip_process, EVENT_SEND_ACK, crc);
} }
#endif
/* Strip header and receive packet */
uip_len = radio_uip_uaodv_remove_header(&uip_buf[UIP_LLH_LEN], uip_len); uip_len = radio_uip_uaodv_remove_header(&uip_buf[UIP_LLH_LEN], uip_len);
//uip_len = hc_inflate(&uip_buf[UIP_LLH_LEN], uip_len);
tcpip_input(); tcpip_input();
return; return;
} }
/* Find new uAODV forwarder and forward packet */
/* TODO TTL? Hop-count? */
/* TODO Assuming uAODV already knows a path */
route = uaodv_rt_lookup((&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN + HEADER_LENGTH])->destipaddr));
if (route != NULL) {
#if UNICAST_ACKED
{
/* Ack last forwarder as soon as possible */
u16_t crc;
crc = radio_uip_calc_crc(&uip_buf[UIP_LLH_LEN], uip_len);
process_post(&radio_uip_ack_process, EVENT_SEND_ACK, crc);
}
#endif
radio_uip_uaodv_change_header(&uip_buf[UIP_LLH_LEN], uip_len, &route->nexthop);
#if UNICAST_ACKED
/* Wait for ack from next forwarded */
radio_uip_wait_for_ack(&uip_buf[UIP_LLH_LEN], uip_len, &route->dest);
#endif
d->send(&uip_buf[UIP_LLH_LEN], uip_len);
#if BAD_REPLY_ON_NO_ROUTE
} else {
NOT IMPLEMENTED
#endif
}
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
u8_t u8_t
radio_uip_uaodv_send(void) radio_uip_uaodv_send(void)
{ {
/* uAODV RREQ messages should be sent as usual */ struct uaodv_rt_entry *route;
if (radio_uip_uaodv_dest_port(&uip_buf[UIP_LLH_LEN], uip_len) == HTONS(UAODV_UDPPORT)) {
struct uaodv_msg *m = (struct uaodv_msg *)&uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN]; /* Transmit broadcast packets without header */
if (m->type == UAODV_RREQ_TYPE) { if (radio_uip_uaodv_is_broadcast(&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr)) {
//uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len); return radio_uip_buffer_outgoing_packet(&uip_buf[UIP_LLH_LEN], uip_len, &uip_broadcast_addr, 1);
return radio->send(&uip_buf[UIP_LLH_LEN], uip_len);
} }
#if UNICAST_ACKED /* Transmit uAODV packets with headers but without using route table */
/* uAODV RREP and RERR messages should be acked */ if (((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->proto == UIP_PROTO_UDP
radio_uip_wait_for_ack(&uip_buf[UIP_LLH_LEN], uip_len, &((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr); && radio_uip_uaodv_dest_port(&uip_buf[UIP_LLH_LEN], uip_len) == HTONS(UAODV_UDPPORT)) {
#endif uip_ipaddr_t nexthop;
memcpy(&nexthop, &((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr, 4);
//uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len); uip_len = radio_uip_uaodv_add_header(
return radio->send(&uip_buf[UIP_LLH_LEN], uip_len); &uip_buf[UIP_LLH_LEN],
uip_len,
&nexthop
);
/* Buffer packet for persistent transmission */
return radio_uip_buffer_outgoing_packet(
&uip_buf[UIP_LLH_LEN],
uip_len,
&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN + FWD_PACKET_LENGTH])->destipaddr,
MAX_RETRANSMISSIONS_RREP);
} }
if (radio_uip_uaodv_is_broadcast(uip_udp_sender())) { /* Fetch already prepared uAODV route */
//uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len); route = uaodv_rt_lookup_any((&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr));
if (route == NULL || route->is_bad) {
/* We can use the broadcast address immediately */ /* If we are forwarding, notify origin of this bad route */
uip_len = radio_uip_uaodv_add_header(&uip_buf[UIP_LLH_LEN], uip_len, uip_udp_sender()); /* TODO Correct? */ if (tcpip_is_forwarding) {
} else { uaodv_bad_dest((&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr));
//uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len); }
/* Fetch uAODV route (must be prepared!) */ return UIP_FW_DROPPED;
route = uaodv_rt_lookup((&((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->destipaddr)); }
if (route == NULL) return UIP_FW_NOROUTE;
/* Add header and buffer packet for persistent transmission */
uip_len = radio_uip_uaodv_add_header(&uip_buf[UIP_LLH_LEN], uip_len, &route->nexthop); /* TODO Correct? */ uip_len = radio_uip_uaodv_add_header(&uip_buf[UIP_LLH_LEN], uip_len, &route->nexthop); /* TODO Correct? */
return radio_uip_buffer_outgoing_packet(
#if UNICAST_ACKED &uip_buf[UIP_LLH_LEN],
/* We expect to get an ack for this unicast packet */ uip_len,
radio_uip_wait_for_ack(&uip_buf[UIP_LLH_LEN], uip_len, &route->dest); &route->dest,
#endif MAX_RETRANSMISSIONS_UNICAST);
}
return radio->send(&uip_buf[UIP_LLH_LEN], uip_len);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
void void
radio_uip_uaodv_init(const struct radio_driver *d) radio_uip_uaodv_init(const struct radio_driver *d)
{ {
#if UNICAST_ACKED /* Prepare buffers and start main process */
memb_init(&bufferedPacketsMEMB); memb_init(&buf_packet_mem);
list_init(bufferedPackets); list_init(buf_packet_list);
process_start(&radio_uip_ack_process, NULL); process_start(&radio_uip_process, NULL);
#endif
radio = d; radio = d;
radio->set_receive_function(receiver); radio->set_receive_function(receiver);
radio->on(); radio->on();
} }
#if UNICAST_ACKED
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
u16_t u16_t
radio_uip_calc_crc(u8_t *buf, int len) radio_uip_calc_crc(u8_t *buf, int len)
@ -319,6 +271,7 @@ radio_uip_calc_crc(u8_t *buf, int len)
u16_t crcacc = 0xffff; u16_t crcacc = 0xffff;
int counter; int counter;
/* TODO Not effective */
for (counter = 0; counter < len; counter++) { for (counter = 0; counter < len; counter++) {
crcacc = crc16_add(buf[counter], crcacc); crcacc = crc16_add(buf[counter], crcacc);
} }
@ -326,111 +279,128 @@ radio_uip_calc_crc(u8_t *buf, int len)
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_wait_for_ack(u8_t *buf, int len, uip_ipaddr_t *dest) radio_uip_buffer_outgoing_packet(u8_t *buf, int len, uip_ipaddr_t *dest, int max_sends)
{ {
struct bufferedPacket *bufPacket; struct buf_packet *packet;
/* Allocate storage memory */ u16_t crc;
bufPacket = (struct bufferedPacket *)memb_alloc(&bufferedPacketsMEMB);
if (bufPacket == NULL) { /* Calculate packet's unique CRC */
return 1; crc = radio_uip_calc_crc(&uip_buf[UIP_LLH_LEN], uip_len);
/* Check if this packet is already being transmitted */
for(packet = list_head(buf_packet_list);
packet != NULL;
packet = packet->next) {
if (packet->crc == crc) {
return UIP_FW_DROPPED;
}
} }
/* Store packet specific data and set timer */ /* Allocate storage memory */
memcpy(bufPacket->data, buf, len); packet = (struct buf_packet *)memb_alloc(&buf_packet_mem);
bufPacket->len = len; if (packet == NULL) {
bufPacket->resends = 0; return UIP_FW_DROPPED;
bufPacket->acked = 0; }
memcpy(&bufPacket->finaldest, dest, 4);
bufPacket->crc = radio_uip_calc_crc(&uip_buf[UIP_LLH_LEN], uip_len);
PROCESS_CONTEXT_BEGIN(&radio_uip_ack_process);
etimer_set(&bufPacket->etimer, CLOCK_SECOND * 1);
PROCESS_CONTEXT_END(&radio_uip_ack_process);
/* Add to list for later reference */ /* Prepare packet buffer */
list_add(bufferedPackets, bufPacket); memcpy(packet->data, buf, len);
packet->len = len;
packet->resends = max_sends;
packet->acked = 0;
if (packet->resends > 1)
packet->want_ack = 1;
else
packet->want_ack = 0;
memcpy(&packet->finaldest, dest, 4);
packet->crc = crc;
return 0; /* Set first transmission to as soon as possible */
PROCESS_CONTEXT_BEGIN(&radio_uip_process);
etimer_set(&packet->etimer, 0);
PROCESS_CONTEXT_END(&radio_uip_process);
/* Add to buffered packets list */
list_add(buf_packet_list, packet);
return UIP_FW_OK;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_is_ack(u8_t *buf, int len) radio_uip_is_ack(u8_t *buf, int len)
{ {
struct bufferedPacket *bufPacket; if (uip_len != ACK_PACKET_LENGTH)
if (uip_len != ACK_LENGTH)
return 0; return 0;
return strncmp(buf, uniqueAckHeader, ACK_HEADER_LENGTH) == 0; return strncmp(buf, ACK_ID, ACK_ID_LENGTH) == 0;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_handle_ack(u8_t *buf, int len) radio_uip_handle_ack(u8_t *buf, int len)
{ {
struct bufferedPacket *bufPacket; struct buf_packet *packet;
u16_t ackCRC; u16_t ackCRC;
memcpy(&ackCRC, &buf[ACK_HEADER_LENGTH], 2); memcpy(&ackCRC, &buf[ACK_CRC], 2);
/* Locate which packet was acknowledged */ /* Locate which packet was acknowledged */
for(bufPacket = list_head(bufferedPackets); for(packet = list_head(buf_packet_list);
bufPacket != NULL; packet != NULL;
bufPacket = bufPacket->next) { packet = packet->next) {
if (bufPacket->crc == ackCRC) { if (packet->crc == ackCRC) {
/* Signal packet has been acknowledged */ /* Signal packet has been acknowledged */
bufPacket->acked = 1; packet->acked = 1;
return 0; return 0;
} }
} }
return 1; return 1;
} }
#endif
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_uaodv_add_header(u8_t *buf, int len, uip_ipaddr_t *addr) radio_uip_uaodv_add_header(u8_t *buf, int len, uip_ipaddr_t *addr)
{ {
memcpy(&buf[HEADER_LENGTH], buf, len); memcpy(&buf[FWD_PACKET_LENGTH], buf, len);
memcpy(buf, uniqueFwdHeader, HEADER_ID_LENGTH); memcpy(buf, FWD_ID, FWD_ID_LENGTH);
memcpy(&buf[HEADER_NEXT_FWD], (char*)addr, 4); memcpy(&buf[FWD_NEXT_IP], (char*)addr, 4);
return HEADER_LENGTH + len; return FWD_PACKET_LENGTH + len;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_uaodv_remove_header(u8_t *buf, int len) radio_uip_uaodv_remove_header(u8_t *buf, int len)
{ {
memcpy(buf, &buf[HEADER_LENGTH], len); memcpy(buf, &buf[FWD_PACKET_LENGTH], len);
return HEADER_LENGTH + len; return len - FWD_PACKET_LENGTH; /* TODO XXX Why doesn't this work!? */
return len - HEADER_LENGTH;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
void void
radio_uip_uaodv_change_header(u8_t *buf, int len, uip_ipaddr_t *addr) radio_uip_uaodv_change_header(u8_t *buf, int len, uip_ipaddr_t *addr)
{ {
memcpy(&buf[HEADER_NEXT_FWD], addr, 4); memcpy(&buf[FWD_NEXT_IP], addr, 4);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_uaodv_header_exists(u8_t *buf, int len) radio_uip_uaodv_header_exists(u8_t *buf, int len)
{ {
return !memcmp(buf, uniqueFwdHeader, HEADER_ID_LENGTH); return !memcmp(buf, FWD_ID, FWD_ID_LENGTH);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_uaodv_is_broadcast(uip_ipaddr_t *addr) radio_uip_uaodv_is_broadcast(uip_ipaddr_t *addr)
{ {
return ((u8_t*)addr)[3] == 255; /* TODO Only comparing with the last */ return uip_ipaddr_cmp(addr, &uip_broadcast_addr);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_uaodv_fwd_is_broadcast(u8_t *buf, int len) radio_uip_uaodv_fwd_is_broadcast(u8_t *buf, int len)
{ {
return radio_uip_uaodv_is_broadcast((uip_ipaddr_t*) &buf[HEADER_NEXT_FWD]); return radio_uip_uaodv_is_broadcast((uip_ipaddr_t*) &buf[FWD_NEXT_IP]);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int
radio_uip_uaodv_fwd_is_me(u8_t *buf, int len) radio_uip_uaodv_fwd_is_me(u8_t *buf, int len)
{ {
return !memcmp(&buf[HEADER_NEXT_FWD], &uip_hostaddr, 4); return !memcmp(&buf[FWD_NEXT_IP], &uip_hostaddr, 4);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
int int