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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1997 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* Ported from CMU/Monarch's code*/
/*
tora_api.cc
$Id: tora_api.cc,v 1.3 1999/09/09 04:02:52 salehi Exp $
Implement the API used by IMEP
*/
#include <tora/tora.h>
#define CURRENT_TIME Scheduler::instance().clock()
void
toraAgent::rtNotifyLinkUP(nsaddr_t index)
{
TORADest *td = dstlist.lh_first;
/*
* Update the destination lists...
*/
for( ; td; td = td->link.le_next) {
if(td->nb_find(index) == 0) {
(void) td->nb_add(index);
}
if (td->rt_req)
{ // must send a new query for this dest so the new
// neighbor can hear it
// IMEP will take care of aggregating all these into
// one physical pkt
trace("T %.9f _%d_ QRY %d for %d (rtreq set)",
Scheduler::instance().clock(), ipaddr(),
td->index, index);
sendQRY(td->index);
td->time_tx_qry = CURRENT_TIME;
}
}
}
void
toraAgent::rtNotifyLinkDN(nsaddr_t index)
{
TORADest *td = dstlist.lh_first;
/*
* Purge each Destination's Neighbor List
*/
for( ; td; td = td->link.le_next) {
if(td->nb_del(index)) {
/*
* Send an UPD packet if you've lost the last
* downstream link.
*/
sendUPD(td->index);
}
}
/*
* Now purge the Network Interface queues that
* may have packets destined for this broken
* neighbor.
*/
{
Packet *head = 0;
Packet *p;
Packet *np = 0;
while((p = ifqueue->filter(index))) {
p->next_ = head;
head = p;
}
for(p = head; p; p = np) {
np = p->next_;
/*
* This make a lot of sense for TORA since we
* will almost always have multiple routes to
* a destination.
*/
log_link_layer_recycle(p);
rt_resolve(p);
}
}
}
void
toraAgent::rtNotifyLinkStatus(nsaddr_t /* index */, u_int32_t /* status */)
{
abort();
}
void
toraAgent::rtRoutePacket(Packet *p)
{
struct hdr_cmn *ch = HDR_CMN(p);
struct hdr_ip *ip = HDR_IP(p);
// Non-data packets and BROADCAST packets can be dropped.
if(DATA_PACKET(ch->ptype()) == 0 ||
ip->daddr() == (nsaddr_t) IP_BROADCAST) {
drop(p, DROP_RTR_MAC_CALLBACK);
return;
}
rt_resolve(p);
}
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