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Bugfix in Network lsa originating

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Bugfix in ntohlsab() and htonlsab()
For calculating of rt I use my own fib. I delete routes! ;-)
This commit is contained in:
Ondrej Filip 2000-05-04 01:23:03 +00:00
parent 9e48d717cf
commit d345cda5a1
7 changed files with 123 additions and 155 deletions
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4
proto/ospf/lsalib.c
View file

@ -267,12 +267,12 @@ lsasum_calculate(struct ospf_lsa_header *h,void *body,struct proto_ospf *po)
length=h->length;
htonlsah(h,h);
htonlsab(body,body,h->type,length);
htonlsab(body,body,h->type,length-sizeof(struct ospf_lsa_header));
(void)lsasum_check(h,body,po);
ntohlsah(h,h);
ntohlsab(body,body,h->type,length);
ntohlsab(body,body,h->type,length-sizeof(struct ospf_lsa_header));
}
/*

6
proto/ospf/lsupd.c
View file

@ -116,7 +116,8 @@ flood_lsa(struct ospf_neighbor *n, struct ospf_lsa_header *hn,
lh->age=htons(age);
help=(u8 *)(lh+1);
en=ospf_hash_find_header(oa->gr,hh);
htonlsab(en->lsa_body,help,hh->type,hh->length);
htonlsab(en->lsa_body,help,hh->type,hh->length
-sizeof(struct ospf_lsa_header));
len=hh->length;
}
op->length=htons(len);
@ -186,7 +187,8 @@ ospf_lsupd_tx_list(struct ospf_neighbor *n, list *l)
}
htonlsah(&(en->lsa), pktpos);
pktpos=pktpos+sizeof(struct ospf_lsa_header);
htonlsab(en->lsa_body, pktpos, en->lsa.type, en->lsa.length);
htonlsab(en->lsa_body, pktpos, en->lsa.type, en->lsa.length
-sizeof(struct ospf_lsa_header));
pktpos=pktpos+en->lsa.length-sizeof(struct ospf_lsa_header);
len=len+en->lsa.length;
lsano++;

4
proto/ospf/neighbor.c
View file

@ -27,7 +27,7 @@ neigh_chstate(struct ospf_neighbor *n, u8 state)
ifa=n->ifa;
if(n->state==NEIGHBOR_FULL)
{
ifa->fadj++;
ifa->fadj--;
n->state=state;
originate_rt_lsa(ifa->oa,ifa->oa->po);
originate_net_lsa(ifa,ifa->oa->po);
@ -39,7 +39,7 @@ neigh_chstate(struct ospf_neighbor *n, u8 state)
n->state=state;
if(state==NEIGHBOR_FULL)
{
ifa->fadj--;
ifa->fadj++;
originate_rt_lsa(n->ifa->oa,n->ifa->oa->po);
originate_net_lsa(ifa,ifa->oa->po);
}

3
proto/ospf/ospf.h
View file

@ -26,7 +26,7 @@
#include "nest/iface.h"
#include "nest/route.h"
#include "conf/conf.h"
#include <string.h>
#include "lib/string.h"
#define OSPF_PROTO 89
#ifndef IPV6
@ -334,6 +334,7 @@ struct ospf_area {
u8 stub;
u8 trcap; /* Transit capability? */
struct proto_ospf *po;
struct fib infib; /* FIB for intra-area routes */
};
struct proto_ospf {

236
proto/ospf/rt.c
View file

@ -9,12 +9,12 @@
#include "ospf.h"
void
init_stub_fib(struct fib_node *fn)
init_infib(struct fib_node *fn)
{
struct stub_fib *sf=(struct stub_fib *)fn;
struct infib *f=(struct infib *)fn;
sf->metric=LSINFINITY;
sf->nhi=NULL;
f->metric=LSINFINITY;
f->en=NULL;
}
void
@ -24,13 +24,17 @@ ospf_rt_spfa(struct ospf_area *oa)
u32 i,*rts;
struct ospf_lsa_rt *rt;
struct ospf_lsa_rt_link *rtl,*rr;
struct fib fib;
struct stub_fib *sf;
struct fib *in=&oa->infib;
struct infib *nf;
bird_clock_t delta;
int age=0,flush=0;
struct proto *p=&oa->po->proto;
ip_addr ip;
struct fib_iterator fit;
struct ospf_lsa_net *ln;
flush=can_flush_lsa(oa);
if((delta=now-oa->lage)>=AGINGDELTA)
{
oa->lage=now;
@ -44,6 +48,13 @@ ospf_rt_spfa(struct ospf_area *oa)
if(age) ospf_age(en,delta,flush,oa);
}
FIB_WALK(in,nftmp)
{
nf=(struct infib *)nftmp;
nf->metric=LSINFINITY;
}
FIB_WALK_END;
init_list(&oa->cand); /* Empty list of candidates */
oa->trcap=0;
@ -58,7 +69,7 @@ ospf_rt_spfa(struct ospf_area *oa)
{
struct top_hash_entry *act,*tmp;
node *n;
struct ospf_lsa_net *netw;
u16 met;
n=HEAD(oa->cand);
act=SKIP_BACK(struct top_hash_entry, cn, n);
@ -81,13 +92,21 @@ ospf_rt_spfa(struct ospf_area *oa)
DBG(" Working on link: %I (type: %u) ",rtl->id,rtl->type);
switch(rtl->type)
{
case LSART_STUB:
case LSART_STUB: /* FIXME add stub network into fib */
DBG("\n");
ip=ipa_from_u32(rtl->id);
nf=fib_get(in,&ip, ipa_mklen(ipa_from_u32(rtl->data)));
if(nf->metric>(met=act->dist+rtl->metric))
{
nf->metric=met;
nf->en=act;
}
break;
case LSART_VLNK:
DBG("Ignoring\n");
continue;
break;
case LSART_NET:
/* FIXME Oh shit so bad complication */
tmp=ospf_hash_find(oa->gr,rtl->id,rtl->id,LSA_T_NET);
if(tmp==NULL) DBG("Fuck!\n");
else DBG("Found. :-)\n");
@ -103,9 +122,17 @@ ospf_rt_spfa(struct ospf_area *oa)
add_cand(&oa->cand,tmp,act,act->dist+rtl->metric,oa);
}
break;
case LSA_T_NET:
netw=(struct ospf_lsa_net *)act->lsa_body;
rts=(u32 *)(netw+1);
case LSA_T_NET: /* FIXME Add to fib */
ln=act->lsa_body;
ip=ipa_and(ipa_from_u32(act->lsa.id),ln->netmask);
nf=fib_get(in,&ip, ipa_mklen(ln->netmask));
if(nf->metric>act->dist)
{
nf->metric=act->dist;
nf->en=act;
}
rts=(u32 *)(ln+1);
for(i=0;i<(act->lsa.length-sizeof(struct ospf_lsa_header)-
sizeof(struct ospf_lsa_net))/sizeof(u32);i++)
{
@ -117,17 +144,23 @@ ospf_rt_spfa(struct ospf_area *oa)
}
break;
}
/* FIXME Now modify rt for this entry */
if((act->lsa.type==LSA_T_NET)&&(act->nhi!=NULL))
}
/* Now sync our fib with nest's */
DBG("\nNow syncing my rt table with nest's\n\n");
FIB_ITERATE_INIT(&fit,in);
again:
FIB_ITERATE_START(in,&fit,nftmp)
{
nf=(struct infib *)nftmp;
if(nf->metric==LSINFINITY)
{
net *ne;
rta a0;
rte *e;
ip_addr ip;
struct ospf_lsa_net *ln=act->lsa_body;
struct top_hash_entry *en=nf->en;
ln=en->lsa_body;
bzero(&a0, sizeof(a0));
a0.proto=p;
a0.source=RTS_OSPF;
a0.scope=SCOPE_UNIVERSE; /* What's this good for? */
@ -135,108 +168,58 @@ ospf_rt_spfa(struct ospf_area *oa)
a0.dest=RTD_ROUTER;
a0.flags=0;
a0.aflags=0;
a0.iface=act->nhi;
a0.gw=act->nh;
a0.from=act->nh; /* FIXME Just a test */
ip=ipa_and(ipa_from_u32(act->lsa.id),ln->netmask);
ne=net_get(p->table, ip, ipa_mklen(ln->netmask));
e=rte_get_temp(&a0);
e->u.ospf.metric1=act->dist;
e->u.ospf.metric2=0;
e->u.ospf.tag=0; /* FIXME Some config? */
e->pflags = 0;
e->net=ne;
DBG("Modifying rt entry %I mask %I\n (IP: %I, GW: %I, Iface: %s)\n",
act->lsa.id,ln->netmask,ip,act->nh,act->nhi->name);
rte_update(p->table, ne, p, e);
a0.iface=en->nhi;
a0.gw=en->nh;
a0.from=en->nh; /* FIXME Just a test */
ne=net_get(p->table, nf->fn.prefix, nf->fn.pxlen);
DBG("Deleting rt entry %I\n (IP: %I, GW: %I, Iface: %s)\n",
nf->fn.prefix,ip,en->nh,en->nhi->name);
rte_update(p->table, ne, p, NULL);
/* Now delete my fib */
FIB_ITERATE_PUT(&fit, nftmp);
fib_delete(in, nftmp);
goto again;
}
else
{
if(act->lsa.type==LSA_T_NET)
/* Update routing table */
if(nf->en->nhi!=NULL)
{
struct ospf_lsa_net *ln=act->lsa_body;
DBG("NOT modifying rt entry %I mask %I\n",act->lsa.id,ln->netmask);
net *ne;
rta a0;
rte *e;
struct top_hash_entry *en=nf->en;
ln=en->lsa_body;
bzero(&a0, sizeof(a0));
a0.proto=p;
a0.source=RTS_OSPF;
a0.scope=SCOPE_UNIVERSE; /* What's this good for? */
a0.cast=RTC_UNICAST;
a0.dest=RTD_ROUTER;
a0.flags=0;
a0.aflags=0;
a0.iface=en->nhi;
a0.gw=en->nh;
a0.from=en->nh; /* FIXME Just a test */
ne=net_get(p->table, nf->fn.prefix, nf->fn.pxlen);
e=rte_get_temp(&a0);
e->u.ospf.metric1=nf->metric;
e->u.ospf.metric2=0;
e->u.ospf.tag=0; /* FIXME Some config? */
e->pflags = 0;
e->net=ne;
DBG("Modifying rt entry %I\n (IP: %I, GW: %I, Iface: %s)\n",
nf->fn.prefix,ip,en->nh,en->nhi->name);
rte_update(p->table, ne, p, e);
}
}
}
FIB_ITERATE_END(nftmp);
DBG("Now calculating routes for stub networks.\n");
/* Now calculate routes to stub networks */
fib_init(&fib,p->pool,sizeof(struct stub_fib),16,init_stub_fib);
/*FIXME 16? */
WALK_SLIST_DELSAFE(SNODE en, SNODE nx, oa->lsal)
{
if((en->lsa.type==LSA_T_RT)||(en->lsa.type==LSA_T_NET))
{
if(en->dist==LSINFINITY)
{
/* FIXME I cannot remove node If I'm not FULL states */
//s_rem_node(SNODE en);
/* FIXME Remove from routing table! */
//mb_free(en->lsa_body);
//ospf_hash_delete(oa->gr, en);
}
if(en->lsa.type==LSA_T_RT)
{
ip_addr ip;
DBG("Working on LSA: rt: %I, id: %I, type: %u\n",en->lsa.rt,en->lsa.id,en->lsa.type);
rt=(struct ospf_lsa_rt *)en->lsa_body;
if((rt->VEB)&(1>>LSA_RT_V)) oa->trcap=1;
rr=(struct ospf_lsa_rt_link *)(rt+1);
for(i=0;i<rt->links;i++)
{
rtl=rr+i;
if(rtl->type==LSART_STUB)
{
DBG(" Working on stub network: %I\n",rtl->id);
ip=ipa_from_u32(rtl->id);
/* Check destination and so on (pg 166) */
sf=fib_get(&fib,&ip,
ipa_mklen(ipa_from_u32(rtl->data)));
if(sf->metric>(en->dist+rtl->metric))
{
sf->metric=en->dist+rtl->metric;
calc_next_hop_fib(en,sf,oa);
if(sf->nhi!=NULL)
{
net *ne;
rta a0;
rte *e;
bzero(&a0, sizeof(a0));
a0.proto=p;
a0.source=RTS_OSPF;
a0.scope=SCOPE_UNIVERSE; /* What's this good for? */
a0.cast=RTC_UNICAST;
a0.dest=RTD_ROUTER;
a0.flags=0;
a0.aflags=0;
a0.iface=sf->nhi;
a0.gw=sf->nh;
a0.from=sf->nh; /* FIXME Just a test */
ip=ipa_from_u32(rtl->id);
ne=net_get(p->table, ip, ipa_mklen(ipa_from_u32(rtl->data)));
e=rte_get_temp(&a0);
e->u.ospf.metric1=sf->metric;
e->u.ospf.metric2=0;
e->u.ospf.tag=0; /* FIXME Some config? */
e->pflags = 0;
e->net=ne;
DBG("Modifying stub rt entry %I mask %I\n (GW: %I, Iface: %s)\n",
ip,rtl->data,sf->nh,sf->nhi->name);
rte_update(p->table, ne, p, e);
}
}
}
}
}
}
}
}
void
@ -316,32 +299,6 @@ calc_next_hop(struct top_hash_entry *par, struct top_hash_entry *en,
neighbor *nn;
DBG(" Next hop calculating for id: %I rt: %I type: %u\n",en->lsa.id,en->lsa.rt,en->lsa.type);
if(par->lsa.type!=LSA_T_RT) return;
if((neigh=find_neigh_noifa(po,en->lsa.rt))==NULL) return;
nn=neigh_find(p,&neigh->ip,0);
DBG(" Next hop calculated: %I\n", nn->addr);
en->nh=nn->addr;
en->nhi=nn->iface;
return;
}
en->nh=par->nh;
en->nhi=par->nhi;
DBG(" Next hop calculated: %I\n", en->nh);
}
void
calc_next_hop_fib(struct top_hash_entry *par, struct stub_fib *en,
struct ospf_area *oa)
{
struct ospf_neighbor *neigh;
struct proto *p=&oa->po->proto;
struct proto_ospf *po=oa->po;
DBG(" Next hop called\n");
if(par==oa->rt) return;
if(par->nhi==NULL)
{
neighbor *nn;
DBG(" Next hop calculating for Fib\n");
if(par->lsa.type!=LSA_T_RT) return;
if((neigh=find_neigh_noifa(po,par->lsa.rt))==NULL) return;
nn=neigh_find(p,&neigh->ip,0);
DBG(" Next hop calculated: %I\n", nn->addr);
@ -353,3 +310,4 @@ calc_next_hop_fib(struct top_hash_entry *par, struct stub_fib *en,
en->nhi=par->nhi;
DBG(" Next hop calculated: %I\n", en->nh);
}

8
proto/ospf/rt.h
View file

@ -10,12 +10,11 @@
#ifndef _BIRD_OSPF_RT_H_
#define _BIRD_OSPF_RT_H_
struct stub_fib {
struct infib {
struct fib_node fn;
u16 metric;
u16 pad;
ip_addr nh;
struct iface *nhi;
struct top_hash_entry *en;
};
void ospf_rt_spfa(struct ospf_area *oa);
@ -23,7 +22,6 @@ void add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par,
u16 dist, struct ospf_area *oa);
void calc_next_hop(struct top_hash_entry *par, struct top_hash_entry *en,
struct ospf_area *oa);
void calc_next_hop_fib(struct top_hash_entry *par, struct stub_fib *en,
struct ospf_area *oa);
void init_infib(struct fib_node *fn);
#endif /* _BIRD_OSPF_RT_H_ */

17
proto/ospf/topology.c
View file

@ -118,7 +118,7 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length, struct proto_ospf *p)
(neigh->state==NEIGHBOR_FULL)) k=1;
if(neigh->state==NEIGHBOR_FULL) j=1;
}
if(((ifa->state=OSPF_IS_DR) && (j==1)) || (k==1))
if(((ifa->state==OSPF_IS_DR) && (j==1)) || (k==1))
{
ln->type=LSART_NET;
ln->id=ipa_to_u32(ifa->drip);
@ -205,6 +205,8 @@ addifa_rtlsa(struct ospf_iface *ifa)
oa->age_timer->hook=age_timer_hook;
oa->age_timer->recurrent=AGINGDELTA;
tm_start(oa->age_timer,AGINGDELTA);
fib_init(&oa->infib,po->proto.pool,sizeof(struct infib),16,init_infib);
/* FIXME 16?? (Oh, sweet 16.... :-) */
po->areano++;
DBG("%s: New OSPF area \"%d\" added.\n", po->proto.name, ifa->an);
}
@ -252,8 +254,13 @@ originate_net_lsa_body(struct ospf_iface *ifa, u16 *length,
u16 i=1;
struct ospf_neighbor *n;
u32 *body;
struct ospf_lsa_net *net;
body=mb_alloc(po->proto.pool,sizeof(u32)*ifa->fadj);
net=mb_alloc(po->proto.pool,sizeof(u32)*(ifa->fadj+1)+
sizeof(struct ospf_lsa_net));
net->netmask=ipa_mkmask(ifa->iface->addr->pxlen);
body=(u32 *)(net+1);
i=1;
*body=po->proto.cf->global->router_id;
WALK_LIST(n,ifa->neigh_list)
@ -264,8 +271,9 @@ originate_net_lsa_body(struct ospf_iface *ifa, u16 *length,
i++;
}
}
*length=i*sizeof(u32)+sizeof(struct ospf_lsa_header);
return body;
*length=i*sizeof(u32)+sizeof(struct ospf_lsa_header)+
sizeof(struct ospf_lsa_net);
return net;
}
void
@ -277,6 +285,7 @@ originate_net_lsa(struct ospf_iface *ifa, struct proto_ospf *po)
void *body;
DBG("%s: Originating Net lsa for iface \"%s\".\n", po->proto.name, ifa->iface->name);
DBG("%s: State is:\"%u\" Fadj=%u.\n", po->proto.name, ifa->state,ifa->fadj);
if(ifa->state!=OSPF_IS_DR) return;