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* Set route timeout to maximum value for std compliance.
* Rename aodvconn to bcastconn for clarity and uniformity. * Use uip_udp_packet_send where possible. * Change a lot of debug printfs. * Moved call to fwc_add. * Set ttl to sensible value if AODV_COMPLIANCE.
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parent
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113
core/net/uaodv.c
113
core/net/uaodv.c
@ -28,7 +28,7 @@
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: uaodv.c,v 1.11 2007/04/30 09:49:32 bg- Exp $
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* $Id: uaodv.c,v 1.12 2007/04/30 15:26:09 bg- Exp $
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*/
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/**
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@ -50,11 +50,12 @@
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#include "dev/cc2420.h"
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#endif
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#define MY_ROUTE_TIMEOUT 0
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/* This implementation never expires routes!!! */
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#define MY_ROUTE_TIMEOUT ((u16_t)~0u)
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PROCESS(uaodv_process, "uAODV");
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static struct uip_udp_conn *aodvconn, *unicastconn;
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static struct uip_udp_conn *bcastconn, *unicastconn;
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/* Compare sequence numbers as per RFC 3561. */
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#ifdef __GNUC__
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@ -138,7 +139,7 @@ sendto(const uip_ipaddr_t *dest, const void *buf, int len)
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uip_ipaddr_copy(&unicastconn->ripaddr, dest);
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uip_udp_conn = unicastconn;
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uip_send(buf, len);
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uip_udp_packet_send(unicastconn, buf, len);
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}
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/*---------------------------------------------------------------------------*/
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static void
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@ -154,11 +155,11 @@ send_rreq(uip_ipaddr_t *addr)
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rm->hop_count = 0;
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rm->rreq_id = htonl(rreq_id++);
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uip_ipaddr_copy(&rm->dest_addr, addr);
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rm->dest_seqno = 0;
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rm->dest_seqno = 0; /* UNKSEQNO */
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uip_gethostaddr(&rm->orig_addr);
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rreq_seqno++; /* Always */
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rm->orig_seqno = htonl(rreq_seqno);
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uip_send((char *)rm, sizeof(struct uaodv_msg_rreq));
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uip_udp_packet_send(bcastconn, rm, sizeof(struct uaodv_msg_rreq));
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}
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/*---------------------------------------------------------------------------*/
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static void
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@ -179,8 +180,6 @@ send_rrep(uip_ipaddr_t *dest, uip_ipaddr_t *nexthop, uip_ipaddr_t *orig,
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uip_ipaddr_copy(&rm->dest_addr, dest);
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rm->lifetime = HTONL(MY_ROUTE_TIMEOUT);
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sendto(nexthop, rm, sizeof(struct uaodv_msg_rrep));
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print_debug("Sending RREP to %d.%d.%d.%d\n", uip_ipaddr_to_quad(nexthop));
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}
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/*---------------------------------------------------------------------------*/
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static void
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@ -188,6 +187,8 @@ send_rerr(uip_ipaddr_t *addr, u32_t *seqno)
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{
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struct uaodv_msg_rerr *rm = (struct uaodv_msg_rerr *)uip_appdata;
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print_debug("send RERR for %d.%d.%d.%d\n", uip_ipaddr_to_quad(addr));
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rm->type = UAODV_RERR_TYPE;
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rm->flags = 0;
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rm->reserved = 0;
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@ -195,10 +196,7 @@ send_rerr(uip_ipaddr_t *addr, u32_t *seqno)
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uip_ipaddr_copy(&rm->unreach[0].addr, addr);
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rm->unreach[0].seqno = *seqno;
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sendto(&uip_broadcast_addr, rm, sizeof(struct uaodv_msg_rerr));
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print_debug("Broadcasting initial RERR for %d.%d.%d.%d\n",
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uip_ipaddr_to_quad(addr));
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uip_udp_packet_send(bcastconn, rm, sizeof(struct uaodv_msg_rerr));
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}
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/*---------------------------------------------------------------------------*/
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static void
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@ -207,19 +205,24 @@ handle_incoming_rreq(void)
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struct uaodv_msg_rreq *rm = (struct uaodv_msg_rreq *)uip_appdata;
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uip_ipaddr_t dest_addr, orig_addr;
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struct uaodv_rt_entry *rt, *fw = NULL;
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print_debug("RREQ %d.%d.%d.%d -> %d.%d.%d.%d ttl=%u"
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" orig=%d.%d.%d.%d seq=%lu hops=%u dest=%d.%d.%d.%d seq=%lu\n",
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uip_ipaddr_to_quad(&BUF->srcipaddr),
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uip_ipaddr_to_quad(&BUF->destipaddr),
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BUF->ttl,
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uip_ipaddr_to_quad(&rm->orig_addr), ntohl(rm->orig_seqno),
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rm->hop_count,
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uip_ipaddr_to_quad(&rm->dest_addr), ntohl(rm->dest_seqno));
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#ifdef CC2420_RADIO
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if(cc2420_last_rssi <= -38 || cc2420_last_correlation < 100) {
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print_debug("RREQ drop from %d.%d.%d.%d %d %d \n",
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uip_ipaddr_to_quad(uip_udp_sender()),
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cc2420_last_rssi,
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cc2420_last_correlation);
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print_debug("RREQ drop %d %d\n", cc2420_last_rssi,cc2420_last_correlation);
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return;
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}
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if(cc2420_check_remote(uip_udp_sender()->u16[1]) == REMOTE_YES) {
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print_debug("RREQ drop from %d.%d.%d.%d is remote\n",
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uip_ipaddr_to_quad(uip_udp_sender()));
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print_debug("RREQ drop is remote\n");
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return;
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}
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#endif
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@ -227,12 +230,10 @@ handle_incoming_rreq(void)
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/* Have we seen this RREQ before? */
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if(uip_ipaddr_cmp(&rm->orig_addr, &uip_hostaddr)
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|| fwc_lookup(&rm->orig_addr, &rm->rreq_id)) {
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print_debug("Not fwd rreq from %d.%d.%d.%d orig_addr %d.%d.%d.%d, rreq_id %lu\n",
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uip_ipaddr_to_quad(uip_udp_sender()),
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uip_ipaddr_to_quad(&rm->orig_addr),
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ntohl(rm->rreq_id));
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print_debug("Not fwd rreq\n");
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return;
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}
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fwc_add(&rm->orig_addr, &rm->rreq_id);
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/* New reverse route? */
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rt = uaodv_rt_lookup(&rm->orig_addr);
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@ -240,11 +241,7 @@ handle_incoming_rreq(void)
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|| (SCMP32(ntohl(rm->orig_seqno), rt->seqno) > 0) /* New route. */
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|| (SCMP32(ntohl(rm->orig_seqno), rt->seqno) == 0
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&& rm->hop_count < rt->hop_count)) { /* Better route. */
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print_debug("Inserting1 %d.%d.%d.%d into routing table, next hop %d.%d.%d.%d, hop_count %u seq %lu\n",
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uip_ipaddr_to_quad(&rm->orig_addr),
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uip_ipaddr_to_quad(uip_udp_sender()),
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rm->hop_count,
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ntohl(rm->orig_seqno));
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print_debug("Inserting1\n");
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rt = uaodv_rt_add(&rm->orig_addr, uip_udp_sender(),
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rm->hop_count, ntohl(rm->orig_seqno));
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}
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@ -252,8 +249,7 @@ handle_incoming_rreq(void)
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/* Check if it is for our address or an existing route. */
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if(uip_ipaddr_cmp(&rm->dest_addr, &uip_hostaddr)
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|| (fw = uaodv_rt_lookup(&rm->dest_addr)) != NULL) {
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print_debug("RREQ for known address %d.%d.%d.%d\n",
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uip_ipaddr_to_quad(&rm->dest_addr));
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print_debug("RREQ for known address\n");
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/* Send an RREP back to the source of the RREQ. */
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uip_ipaddr_copy(&dest_addr, &rm->dest_addr);
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uip_ipaddr_copy(&orig_addr, &rm->orig_addr);
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@ -265,14 +261,9 @@ handle_incoming_rreq(void)
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send_rrep(&dest_addr, &rt->nexthop, &orig_addr, &rreq_seqno, 0);
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}
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} else {
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print_debug("RREQ for %d.%d.%d.%d orig %d.%d.%d.%d ttl=%d\n",
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uip_ipaddr_to_quad(&rm->dest_addr),
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uip_ipaddr_to_quad(&rm->orig_addr),
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uip_udp_conn->ttl);
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fwc_add(&rm->orig_addr, &rm->rreq_id);
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print_debug("RREQ fwd\n");
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rm->hop_count++;
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uip_send(rm, sizeof(struct uaodv_msg_rreq));
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uip_udp_packet_send(bcastconn, rm, sizeof(struct uaodv_msg_rreq));
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}
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}
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/*---------------------------------------------------------------------------*/
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@ -282,6 +273,14 @@ handle_incoming_rrep(void)
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struct uaodv_msg_rrep *rm = (struct uaodv_msg_rrep *)uip_appdata;
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struct uaodv_rt_entry *rt;
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print_debug("RREP %d.%d.%d.%d -> %d.%d.%d.%d"
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" dest=%d.%d.%d.%d seq=%lu hops=%u orig=%d.%d.%d.%d\n",
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uip_ipaddr_to_quad(&BUF->srcipaddr),
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uip_ipaddr_to_quad(&BUF->destipaddr),
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uip_ipaddr_to_quad(&rm->dest_addr), ntohl(rm->dest_seqno),
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rm->hop_count,
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uip_ipaddr_to_quad(&rm->orig_addr));
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rt = uaodv_rt_lookup(&rm->dest_addr);
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print_debug("RREP received dst=%d.%d.%d.%d rt=%p\n",
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@ -289,27 +288,17 @@ handle_incoming_rrep(void)
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/* New forward route? */
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if(rt == NULL || (SCMP32(ntohl(rm->dest_seqno), rt->seqno) > 0)) {
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print_debug("Inserting3 %d.%d.%d.%d into routing table, next hop %d.%d.%d.%d, hop_count %u seq %lu.\n",
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uip_ipaddr_to_quad(&rm->dest_addr),
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uip_ipaddr_to_quad(uip_udp_sender()),
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rm->hop_count,
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ntohl(rm->dest_seqno));
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print_debug("Inserting3\n");
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rt = uaodv_rt_add(&rm->dest_addr, uip_udp_sender(),
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rm->hop_count, ntohl(rm->dest_seqno));
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#ifdef CC2420_RADIO
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/* This link is ok since he is unicasting back to us! */
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cc2420_recv_ok(uip_udp_sender());
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print_debug("RREP recv ok from %d.%d.%d.%d %d %d \n",
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uip_ipaddr_to_quad(uip_udp_sender()),
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cc2420_last_rssi,
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cc2420_last_correlation);
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print_debug("RREP recv ok %d %d\n",
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cc2420_last_rssi, cc2420_last_correlation);
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#endif
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} else {
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print_debug("Not inserting %d.%d.%d.%d into routing table, next hop %d.%d.%d.%d, hop_count %d.\n",
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uip_ipaddr_to_quad(&rm->dest_addr),
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uip_ipaddr_to_quad(uip_udp_sender()),
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rm->hop_count);
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print_debug("Not inserting\n");
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}
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/* Forward RREP towards originator? */
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@ -342,9 +331,11 @@ handle_incoming_rerr(void)
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struct uaodv_msg_rerr *rm = (struct uaodv_msg_rerr *)uip_appdata;
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struct uaodv_rt_entry *rt;
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print_debug("RERR received from %d.%d.%d.%d route to %d.%d.%d.%d seq=%lu\n",
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uip_ipaddr_to_quad(uip_udp_sender()),
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uip_ipaddr_to_quad(&rm->unreach[0].addr),
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print_debug("RERR %d.%d.%d.%d -> %d.%d.%d.%d"
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" unreach=%d.%d.%d.%d seq=%lu\n",
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uip_ipaddr_to_quad(&BUF->srcipaddr),
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uip_ipaddr_to_quad(&BUF->destipaddr),
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uip_ipaddr_to_quad((uip_ipaddr_t *)&rm->unreach[0]),
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ntohl(rm->unreach[0].seqno));
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rt = uaodv_rt_lookup(&rm->unreach[0].addr);
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@ -353,7 +344,7 @@ handle_incoming_rerr(void)
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&& SCMP32(rt->seqno, ntohl(rm->unreach[0].seqno)) <= 0) {
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uaodv_rt_remove(rt);
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print_debug("RERR rebroadcast\n");
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sendto(&uip_broadcast_addr, rm, sizeof(struct uaodv_msg_rerr));
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uip_udp_packet_send(bcastconn, rm, sizeof(struct uaodv_msg_rerr));
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}
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}
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/*---------------------------------------------------------------------------*/
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@ -436,8 +427,12 @@ PROCESS_THREAD(uaodv_process, ev, data)
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printf("uaodv_process starting\n");
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aodvconn = udp_broadcast_new(HTONS(UAODV_UDPPORT), NULL);
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aodvconn->ttl = 1;
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bcastconn = udp_broadcast_new(HTONS(UAODV_UDPPORT), NULL);
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#ifdef AODV_COMPLIANCE
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bcastconn->ttl = 6;
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#else
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bcastconn->ttl = 1;
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#endif
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unicastconn = udp_broadcast_new(HTONS(UAODV_UDPPORT), NULL);
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unicastconn->ttl = 1;
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@ -467,15 +462,15 @@ PROCESS_THREAD(uaodv_process, ev, data)
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etimer_set(&etimer, 2);
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PROCESS_WAIT_UNTIL(etimer_expired(&etimer));
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#endif
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tcpip_poll_udp(aodvconn);
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tcpip_poll_udp(bcastconn);
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}
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}
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exit:
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command = COMMAND_NONE;
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uaodv_rt_flush_all();
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uip_udp_remove(aodvconn);
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aodvconn = NULL;
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uip_udp_remove(bcastconn);
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bcastconn = NULL;
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uip_udp_remove(unicastconn);
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unicastconn = NULL;
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printf("uaodv_process exiting\n");
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