bool ToSaMeshNode::Send(appMessage Message) {
meshMessage mm = AppToMesh(Message);
mm.pid = nextpid++;
if ((mm.source == TOSA_MESH_BROADCAST) || (mm.source == TOSA_MESH_NOADDRESS))
mm.source = addr;
if (Message.dest != TOSA_MESH_BROADCAST && mm.to == TOSA_MESH_NOADDRESS)
SendArpRequest(Message.dest);
Send(mm);
return true;
}
uchar *
ArpEther(struct udpinfo *u, uchar *ecpy)
{
struct ether_header *ehdr;
uchar *binip, *gbinip, *Ip, *ep;
int size, retry, timeoutsecs;
binip = (uchar *)&u->dip.s_addr;
gbinip = (uchar *)&thisgip.s_addr;
/* First check local cache. If found, return with pointer to MAC. */
ep = EtherFromCache(binip);
if (ep) {
if (ecpy) {
memcpy((char *)ecpy, (char *)ep,6);
ep = ecpy;
}
return(ep);
}
retry = 0;
while(1) {
/* If IP is not on this net, the get the GATEWAY IP address.
*/
if (!IpIsOnThisNet(binip)) {
ep = EtherFromCache(gbinip);
if (ep) {
if (ecpy) {
memcpy((char *)ecpy, (char *)ep,6);
ep = ecpy;
}
return(ep);
}
SendArpRequest(gbinip);
Ip = gbinip;
}
else {
SendArpRequest(binip);
Ip = binip;
}
/* Now that the request has been issued, wait for a while to see if
* the ARP cache is loaded with the result of the request.
*/
for(timeoutsecs=0; timeoutsecs<1000000; timeoutsecs++) {
ep = EtherFromCache(Ip);
if (ep)
break;
size = mon_recvenetpkt(u->packet,u->plen);
if (size == 0)
continue;
ehdr = (struct ether_header *)u->packet;
if (!memcmp(ehdr->ether_shost.ether_addr_octet,
thismac.ether_addr_octet,6)) {
continue;
}
if (ehdr->ether_type == ecs(ETHERTYPE_ARP)) {
processARP(ehdr,size);
}
}
if (ep) {
if (ecpy) {
memcpy((char *)ecpy, (char *)ep,6);
ep = ecpy;
}
return(ep);
}
retry++;
}
return(0);
}
