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* Make it explicit that some seqno:s are in host byte order by naming

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them hseqno.

* Change uaodv_rt_add to take argument in (standard) network byte
  order (and change it to be a pointer).
This commit is contained in:
bg- 2007-05-09 13:54:41 +00:00
parent 1b3c2da7ab
commit 34490eeecb
1 changed files with 20 additions and 20 deletions
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40
core/net/uaodv.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: uaodv.c,v 1.16 2007/05/09 13:07:55 bg- Exp $
* $Id: uaodv.c,v 1.17 2007/05/09 13:54:41 bg- Exp $
*/
/**
@ -78,7 +78,7 @@ last_known_seqno(uip_ipaddr_t *host)
struct uaodv_rt_entry *route = uaodv_rt_lookup_any(host);
if(route != NULL)
return route->seqno;
return htonl(route->hseqno);
return 0;
}
@ -91,7 +91,7 @@ last_known_seqno(uip_ipaddr_t *host)
#else /* __GNUC__ */
#define NOINIT
#endif /* __GNUC__ */
NOINIT static u32_t rreq_id, rreq_seqno;
NOINIT static u32_t rreq_id, my_hseqno; /* In host byte order! */
#define NFWCACHE 16
@ -174,8 +174,8 @@ send_rreq(uip_ipaddr_t *addr)
rm->rreq_id = htonl(rreq_id++);
uip_ipaddr_copy(&rm->dest_addr, addr);
uip_gethostaddr(&rm->orig_addr);
rreq_seqno++; /* Always */
rm->orig_seqno = htonl(rreq_seqno);
my_hseqno++; /* Always */
rm->orig_seqno = htonl(my_hseqno);
uip_udp_packet_send(bcastconn, rm, sizeof(struct uaodv_msg_rreq));
}
/*---------------------------------------------------------------------------*/
@ -259,12 +259,12 @@ handle_incoming_rreq(void)
/* New reverse route? */
rt = uaodv_rt_lookup(&rm->orig_addr);
if(rt == NULL
|| (SCMP32(ntohl(rm->orig_seqno), rt->seqno) > 0) /* New route. */
|| (SCMP32(ntohl(rm->orig_seqno), rt->seqno) == 0
|| (SCMP32(ntohl(rm->orig_seqno), rt->hseqno) > 0) /* New route. */
|| (SCMP32(ntohl(rm->orig_seqno), rt->hseqno) == 0
&& rm->hop_count < rt->hop_count)) { /* Better route. */
print_debug("Inserting1\n");
rt = uaodv_rt_add(&rm->orig_addr, uip_udp_sender(),
rm->hop_count, ntohl(rm->orig_seqno));
rm->hop_count, &rm->orig_seqno);
}
/* Check if it is for our address or a fresh route. */
@ -274,7 +274,7 @@ handle_incoming_rreq(void)
fw = uaodv_rt_lookup(&rm->dest_addr);
if(!(rm->flags & UAODV_RREQ_UNKSEQNO)
&& fw != NULL
&& SCMP32(ntohl(rm->dest_seqno), fw->seqno) >= 0) {
&& SCMP32(ntohl(rm->dest_seqno), fw->hseqno) >= 0) {
fw = NULL;
}
}
@ -285,7 +285,7 @@ handle_incoming_rreq(void)
print_debug("RREQ for known route\n");
uip_ipaddr_copy(&dest_addr, &rm->dest_addr);
uip_ipaddr_copy(&orig_addr, &rm->orig_addr);
net_seqno = htonl(fw->seqno);
net_seqno = htonl(fw->hseqno);
send_rrep(&dest_addr, &rt->nexthop, &orig_addr, &net_seqno,
fw->hop_count + 1);
} else if(uip_ipaddr_cmp(&rm->dest_addr, &uip_hostaddr)) {
@ -296,13 +296,13 @@ handle_incoming_rreq(void)
uip_ipaddr_copy(&orig_addr, &rm->orig_addr);
if(!(rm->flags & UAODV_RREQ_UNKSEQNO)
&& SCMP32(rreq_seqno, ntohl(rm->dest_seqno)) < 0) {
print_debug("New rreq_seqno\n"); /* We must have rebooted. */
rreq_seqno = ntohl(rm->dest_seqno) + 1;
&& SCMP32(my_hseqno, ntohl(rm->dest_seqno)) < 0) {
print_debug("New my_hseqno %lu\n", my_hseqno); /* We have rebooted. */
my_hseqno = ntohl(rm->dest_seqno) + 1;
} else {
rreq_seqno++;
my_hseqno++;
}
net_seqno = htonl(rreq_seqno);
net_seqno = htonl(my_hseqno);
send_rrep(&dest_addr, &rt->nexthop, &orig_addr, &net_seqno, 0);
} else {
/* Have we seen this RREQ before? */
@ -338,10 +338,10 @@ handle_incoming_rrep(void)
uip_ipaddr_to_quad(&rm->dest_addr), rt);
/* New forward route? */
if(rt == NULL || (SCMP32(ntohl(rm->dest_seqno), rt->seqno) > 0)) {
if(rt == NULL || (SCMP32(ntohl(rm->dest_seqno), rt->hseqno) > 0)) {
print_debug("Inserting3\n");
rt = uaodv_rt_add(&rm->dest_addr, uip_udp_sender(),
rm->hop_count, ntohl(rm->dest_seqno));
rm->hop_count, &rm->dest_seqno);
#ifdef CC2420_RADIO
/* This link is ok since he is unicasting back to us! */
cc2420_recv_ok(uip_udp_sender());
@ -395,7 +395,7 @@ handle_incoming_rerr(void)
rt = uaodv_rt_lookup(&rm->unreach[0].addr);
if(rt != NULL && uip_ipaddr_cmp(&rt->nexthop, uip_udp_sender())) {
if(rm->flags & UAODV_RERR_UNKNOWN || rm->unreach[0].seqno == 0
|| SCMP32(rt->seqno, ntohl(rm->unreach[0].seqno)) <= 0) {
|| SCMP32(rt->hseqno, ntohl(rm->unreach[0].seqno)) <= 0) {
rt->is_bad = 1;
print_debug("RERR rebroadcast\n");
uip_udp_packet_send(bcastconn, rm, sizeof(struct uaodv_msg_rerr));
@ -443,7 +443,7 @@ uaodv_bad_dest(uip_ipaddr_t *dest)
bad_seqno = 0; /* Or flag this in RERR? */
else {
rt->is_bad = 1;
bad_seqno = htonl(rt->seqno);
bad_seqno = htonl(rt->hseqno);
}
uip_ipaddr_copy(&bad_dest, dest);
@ -488,7 +488,7 @@ PROCESS_THREAD(uaodv_process, ev, data)
PROCESS_BEGIN();
printf("uaodv_process starting\n");
printf("uaodv_process starting %lu\n", my_hseqno);
bcastconn = udp_broadcast_new(HTONS(UAODV_UDPPORT), NULL);
#ifdef AODV_COMPLIANCE