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-rw-r--r--proto/ospf/rt.c795
1 files changed, 416 insertions, 379 deletions
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index 72076bcd..f7453bd3 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -11,26 +11,26 @@
void
init_infib(struct fib_node *fn)
{
- struct infib *f=(struct infib *)fn;
+ struct infib *f = (struct infib *) fn;
- f->metric=LSINFINITY;
- f->oldmetric=LSINFINITY;
- f->en=NULL;
- f->olden=NULL;
+ f->metric = LSINFINITY;
+ f->oldmetric = LSINFINITY;
+ f->en = NULL;
+ f->olden = NULL;
}
void
init_efib(struct fib_node *fn)
{
- struct extfib *f=(struct extfib *)fn;
-
- f->metric=LSINFINITY;
- f->metric2=LSINFINITY;
- f->nh=ipa_from_u32(0);
- f->nhi=NULL;
- f->oldmetric=LSINFINITY;
- f->oldmetric2=LSINFINITY;
- f->oldnh=ipa_from_u32(0);
+ struct extfib *f = (struct extfib *) fn;
+
+ f->metric = LSINFINITY;
+ f->metric2 = LSINFINITY;
+ f->nh = ipa_from_u32(0);
+ f->nhi = NULL;
+ f->oldmetric = LSINFINITY;
+ f->oldmetric2 = LSINFINITY;
+ f->oldnh = ipa_from_u32(0);
}
/**
@@ -46,148 +46,158 @@ init_efib(struct fib_node *fn)
void
ospf_rt_spfa(struct ospf_area *oa)
{
- u32 i,*rts;
+ u32 i, *rts;
struct ospf_lsa_rt *rt;
- struct ospf_lsa_rt_link *rtl,*rr;
- struct fib *in=&oa->infib;
+ struct ospf_lsa_rt_link *rtl, *rr;
+ struct fib *in = &oa->infib;
struct infib *nf;
struct fib_iterator fit;
- struct proto *p=&oa->po->proto;
- struct proto_ospf *po=oa->po;
+ struct proto *p = &oa->po->proto;
+ struct proto_ospf *po = oa->po;
ip_addr ip;
struct ospf_lsa_net *ln;
OSPF_TRACE(D_EVENTS, "Starting routing table calculation for area %I",
- oa->areaid);
+ oa->areaid);
- if(oa->rt==NULL) return;
+ if (oa->rt == NULL)
+ return;
- FIB_WALK(in,nftmp)
+ FIB_WALK(in, nftmp)
{
- nf=(struct infib *)nftmp;
- nf->metric=LSINFINITY;
- nf->en=NULL;
+ nf = (struct infib *) nftmp;
+ nf->metric = LSINFINITY;
+ nf->en = NULL;
}
FIB_WALK_END;
init_list(&oa->cand); /* Empty list of candidates */
- oa->trcap=0;
+ oa->trcap = 0;
DBG("LSA db prepared, adding me into candidate list.\n");
- oa->rt->dist=0;
- oa->rt->color=CANDIDATE;
+ oa->rt->dist = 0;
+ oa->rt->color = CANDIDATE;
add_head(&oa->cand, &oa->rt->cn);
- DBG("RT LSA: rt: %I, id: %I, type: %u\n",oa->rt->lsa.rt,
- oa->rt->lsa.id,oa->rt->lsa.type);
+ DBG("RT LSA: rt: %I, id: %I, type: %u\n", oa->rt->lsa.rt,
+ oa->rt->lsa.id, oa->rt->lsa.type);
- while(!EMPTY_LIST(oa->cand))
+ while (!EMPTY_LIST(oa->cand))
{
- struct top_hash_entry *act,*tmp;
+ struct top_hash_entry *act, *tmp;
node *n;
u16 met;
- n=HEAD(oa->cand);
- act=SKIP_BACK(struct top_hash_entry, cn, n);
+ n = HEAD(oa->cand);
+ act = SKIP_BACK(struct top_hash_entry, cn, n);
rem_node(n);
- DBG("Working on LSA: rt: %I, id: %I, type: %u\n",act->lsa.rt,
- act->lsa.id,act->lsa.type);
+ DBG("Working on LSA: rt: %I, id: %I, type: %u\n", act->lsa.rt,
+ act->lsa.id, act->lsa.type);
- act->color=INSPF;
- switch(act->lsa.type)
+ act->color = INSPF;
+ switch (act->lsa.type)
{
- case LSA_T_RT:
- rt=(struct ospf_lsa_rt *)act->lsa_body;
- if(rt->veb.bit.v) oa->trcap=1;
- rr=(struct ospf_lsa_rt_link *)(rt+1);
- DBG(" Number of links: %u\n",rt->links);
- for(i=0;i<rt->links;i++)
+ case LSA_T_RT:
+ rt = (struct ospf_lsa_rt *) act->lsa_body;
+ if (rt->veb.bit.v)
+ oa->trcap = 1;
+ rr = (struct ospf_lsa_rt_link *) (rt + 1);
+ DBG(" Number of links: %u\n", rt->links);
+ for (i = 0; i < rt->links; i++)
+ {
+ tmp = NULL;
+ rtl = (rr + i);
+ DBG(" Working on link: %I (type: %u) ", rtl->id, rtl->type);
+ switch (rtl->type)
{
- tmp=NULL;
- rtl=(rr+i);
- DBG(" Working on link: %I (type: %u) ",rtl->id,rtl->type);
- switch(rtl->type)
+ case LSART_STUB:
+ /* This violates rfc2328! but I hope it's also correct. */
+ 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))
{
- case LSART_STUB:
- /* This violates rfc2328! but I hope it's also correct. */
- 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))
- {
- DBG(" Adding stub route....\n");
- if(oa->rt==act) break;
- if(act->nhi==NULL) break;
- nf->metric=met;
- nf->en=act;
- DBG(" Adding stub route: %I\n",ip);
- DBG(" Next hop=%I\n",nf->en->nh);
- }
- else DBG(" NOT adding stub route: %I\n",ip);
- break;
- case LSART_VLNK:
- DBG("Ignoring\n");
- continue;
- break;
- case LSART_NET:
- tmp=ospf_hash_find(oa->gr,rtl->id,rtl->id,LSA_T_NET);
- if(tmp==NULL) DBG("Not found!\n");
- else DBG("Found. :-)\n");
- break;
- case LSART_PTP:
- tmp=ospf_hash_find(oa->gr,rtl->id,rtl->id,LSA_T_RT);
- DBG("PTP found.\n");
+ DBG(" Adding stub route....\n");
+ if (oa->rt == act)
break;
- default:
- log("Unknown link type in router lsa.");
+ if (act->nhi == NULL)
break;
+ nf->metric = met;
+ nf->en = act;
+ DBG(" Adding stub route: %I\n", ip);
+ DBG(" Next hop=%I\n", nf->en->nh);
}
- if(tmp) DBG("Going to add cand, Mydist: %u, Req: %u\n",
- tmp->dist, act->dist+rtl->metric);
- add_cand(&oa->cand,tmp,act,act->dist+rtl->metric,oa);
- }
- break;
- case LSA_T_NET:
- 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;
- DBG(" Adding into routing table\n");
- }
- rts=(u32 *)(ln+1);
- for(i=0;i<(act->lsa.length-sizeof(struct ospf_lsa_header)-
- sizeof(struct ospf_lsa_net))/sizeof(u32);i++)
- {
- DBG(" Working on router %I ", *(rts+i));
- tmp=ospf_hash_find(oa->gr, *(rts+i), *(rts+i), LSA_T_RT);
- if(tmp!=NULL) DBG("Found :-)\n");
- else DBG("Not found!\n");
- add_cand(&oa->cand,tmp,act,act->dist,oa);
+ else
+ DBG(" NOT adding stub route: %I\n", ip);
+ break;
+ case LSART_VLNK:
+ DBG("Ignoring\n");
+ continue;
+ break;
+ case LSART_NET:
+ tmp = ospf_hash_find(oa->gr, rtl->id, rtl->id, LSA_T_NET);
+ if (tmp == NULL)
+ DBG("Not found!\n");
+ else
+ DBG("Found. :-)\n");
+ break;
+ case LSART_PTP:
+ tmp = ospf_hash_find(oa->gr, rtl->id, rtl->id, LSA_T_RT);
+ DBG("PTP found.\n");
+ break;
+ default:
+ log("Unknown link type in router lsa.");
+ break;
}
- break;
+ if (tmp)
+ DBG("Going to add cand, Mydist: %u, Req: %u\n",
+ tmp->dist, act->dist + rtl->metric);
+ add_cand(&oa->cand, tmp, act, act->dist + rtl->metric, oa);
+ }
+ break;
+ case LSA_T_NET:
+ 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;
+ DBG(" Adding into routing table\n");
+ }
+ rts = (u32 *) (ln + 1);
+ for (i = 0; i < (act->lsa.length - sizeof(struct ospf_lsa_header) -
+ sizeof(struct ospf_lsa_net)) / sizeof(u32); i++)
+ {
+ DBG(" Working on router %I ", *(rts + i));
+ tmp = ospf_hash_find(oa->gr, *(rts + i), *(rts + i), LSA_T_RT);
+ if (tmp != NULL)
+ DBG("Found :-)\n");
+ else
+ DBG("Not found!\n");
+ add_cand(&oa->cand, tmp, act, act->dist, oa);
+ }
+ break;
}
}
/* Now sync our fib with nest's */
DBG("Now syncing my rt table with nest's\n");
- FIB_ITERATE_INIT(&fit,in);
+ FIB_ITERATE_INIT(&fit, in);
again:
- FIB_ITERATE_START(in,&fit,nftmp)
+ FIB_ITERATE_START(in, &fit, nftmp)
{
- nf=(struct infib *)nftmp;
- if(nf->metric==LSINFINITY)
+ nf = (struct infib *) nftmp;
+ if (nf->metric == LSINFINITY)
{
net *ne;
- struct top_hash_entry *en=nf->en;
- ln=en->lsa_body;
-
- ne=net_get(p->table, nf->fn.prefix, nf->fn.pxlen);
- if((en!=NULL)&&(en->nhi!=NULL))
- DBG("Deleting rt entry %I\n (P: %x, GW: %I, Iface: %s)\n",
- nf->fn.prefix, en, en->nh,en->nhi->name);
+ struct top_hash_entry *en = nf->en;
+ ln = en->lsa_body;
+
+ ne = net_get(p->table, nf->fn.prefix, nf->fn.pxlen);
+ if ((en != NULL) && (en->nhi != NULL))
+ DBG("Deleting rt entry %I\n (P: %x, GW: %I, Iface: %s)\n",
+ nf->fn.prefix, en, en->nh, en->nhi->name);
rte_update(p->table, ne, p, NULL);
/* Now delete my fib */
@@ -198,57 +208,59 @@ again:
else
{
/* Update routing table */
- if(ipa_equal(nf->en->nh,ipa_from_u32(0)))
+ if (ipa_equal(nf->en->nh, ipa_from_u32(0)))
{
- struct top_hash_entry *en=nf->en;
- struct ospf_neighbor *neigh;
- neighbor *nn;
+ struct top_hash_entry *en = nf->en;
+ struct ospf_neighbor *neigh;
+ neighbor *nn;
- if((neigh=find_neigh_noifa(po,en->lsa.rt))==NULL)
+ if ((neigh = find_neigh_noifa(po, en->lsa.rt)) == NULL)
{
goto skip;
}
- nn=neigh_find(p,&neigh->ip,0);
- DBG(" Next hop calculated: %I\n", nn->addr);
- en->nh=nn->addr;
- en->nhi=nn->iface;
+ nn = neigh_find(p, &neigh->ip, 0);
+ DBG(" Next hop calculated: %I\n", nn->addr);
+ en->nh = nn->addr;
+ en->nhi = nn->iface;
}
- if((nf->en!=nf->olden)||(nf->metric!=nf->oldmetric))
+ if ((nf->en != nf->olden) || (nf->metric != nf->oldmetric))
{
- 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;
- a0.cast=RTC_UNICAST;
- if(ipa_to_u32(en->nh)==0) a0.dest=RTD_DEVICE;
- else a0.dest=RTD_ROUTER;
- a0.flags=0;
- a0.aflags=0;
- a0.iface=en->nhi;
- a0.gw=en->nh;
-
- 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=LSINFINITY;
- e->u.ospf.tag=0;
- e->pflags = 0;
- e->net=ne;
+ 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;
+ a0.cast = RTC_UNICAST;
+ if (ipa_to_u32(en->nh) == 0)
+ a0.dest = RTD_DEVICE;
+ else
+ a0.dest = RTD_ROUTER;
+ a0.flags = 0;
+ a0.aflags = 0;
+ a0.iface = en->nhi;
+ a0.gw = en->nh;
+
+ 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 = LSINFINITY;
+ e->u.ospf.tag = 0;
+ e->pflags = 0;
+ e->net = ne;
e->pref = p->preference;
- DBG("Modifying rt entry %I\n (GW: %I, Iface: %s)\n",
- nf->fn.prefix,en->nh,en->nhi->name);
- rte_update(p->table, ne, p, e);
+ DBG("Modifying rt entry %I\n (GW: %I, Iface: %s)\n",
+ nf->fn.prefix, en->nh, en->nhi->name);
+ rte_update(p->table, ne, p, e);
- nf->olden=nf->en;
- nf->oldmetric=nf->metric;
+ nf->olden = nf->en;
+ nf->oldmetric = nf->metric;
}
}
@@ -269,217 +281,229 @@ skip:
void
ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
{
- struct top_hash_entry *en,*etmp,*absr;
- struct fib *ef=&po->efib;
+ struct top_hash_entry *en, *etmp, *absr;
+ struct fib *ef = &po->efib;
struct extfib *nf;
struct infib *inf;
struct fib_iterator fit;
- struct ospf_area *oa=NULL,*atmp,*absroa;
- struct proto *p=&po->proto;
+ struct ospf_area *oa = NULL, *atmp, *absroa;
+ struct proto *p = &po->proto;
struct ospf_lsa_ext *le;
struct ospf_lsa_ext_tos *lt;
int mlen;
- ip_addr ip,nnh;
- struct iface *nnhi=NULL;
- u16 met,met2;
+ ip_addr ip, nnh;
+ struct iface *nnhi = NULL;
+ u16 met, met2;
u32 tag;
neighbor *nn;
- OSPF_TRACE(D_EVENTS,"Starting routing table calculation for ext routes");
+ OSPF_TRACE(D_EVENTS, "Starting routing table calculation for ext routes");
- FIB_WALK(ef,nftmp)
+ FIB_WALK(ef, nftmp)
{
- nf=(struct extfib *)nftmp;
- nf->metric=LSINFINITY;
- nf->metric2=LSINFINITY;
+ nf = (struct extfib *) nftmp;
+ nf->metric = LSINFINITY;
+ nf->metric2 = LSINFINITY;
}
FIB_WALK_END;
- WALK_LIST(oa,po->area_list)
+ WALK_LIST(oa, po->area_list)
{
- if(!oa->stub) break;
+ if (!oa->stub)
+ break;
}
- if(oa==NULL) return;
+ if (oa == NULL)
+ return;
- WALK_SLIST(en,oa->lsal)
+ WALK_SLIST(en, oa->lsal)
{
- if(en->lsa.type!=LSA_T_EXT) continue;
- if(en->lsa.age==LSA_MAXAGE) continue;
- if(en->lsa.rt==p->cf->global->router_id) continue;
+ if (en->lsa.type != LSA_T_EXT)
+ continue;
+ if (en->lsa.age == LSA_MAXAGE)
+ continue;
+ if (en->lsa.rt == p->cf->global->router_id)
+ continue;
- le=en->lsa_body;
- lt=(struct ospf_lsa_ext_tos *)(le+1);
+ le = en->lsa_body;
+ lt = (struct ospf_lsa_ext_tos *) (le + 1);
DBG("%s: Working on LSA. ID: %I, RT: %I, Type: %u, Mask %I\n",
- p->name,en->lsa.id,en->lsa.rt,en->lsa.type,le->netmask);
+ p->name, en->lsa.id, en->lsa.rt, en->lsa.type, le->netmask);
- if(lt->metric==LSINFINITY) continue;
- ip=ipa_and(ipa_from_u32(en->lsa.id),le->netmask);
- mlen=ipa_mklen(le->netmask);
- if((mlen<0)||(mlen>32))
+ if (lt->metric == LSINFINITY)
+ continue;
+ ip = ipa_and(ipa_from_u32(en->lsa.id), le->netmask);
+ mlen = ipa_mklen(le->netmask);
+ if ((mlen < 0) || (mlen > 32))
{
log("%s: Invalid mask in LSA. ID: %I, RT: %I, Type: %u, Mask %I",
- p->name,en->lsa.id,en->lsa.rt,en->lsa.type,le->netmask);
+ p->name, en->lsa.id, en->lsa.rt, en->lsa.type, le->netmask);
continue;
}
- nf=NULL;
+ nf = NULL;
- WALK_LIST(atmp,po->area_list)
+ WALK_LIST(atmp, po->area_list)
{
- if((nf=fib_find(&atmp->infib,&ip, mlen))!=NULL) break;
+ if ((nf = fib_find(&atmp->infib, &ip, mlen)) != NULL)
+ break;
}
- if(nf!=NULL) continue; /* Some intra area path exists */
+ if (nf != NULL)
+ continue; /* Some intra area path exists */
- absr=NULL;
- absroa=NULL;
- nnhi=NULL;
- nnh=IPA_NONE;
+ absr = NULL;
+ absroa = NULL;
+ nnhi = NULL;
+ nnh = IPA_NONE;
- met=0;met2=0;tag=0;
+ met = 0;
+ met2 = 0;
+ tag = 0;
- WALK_LIST(atmp,po->area_list) /*
+ WALK_LIST(atmp, po->area_list) /*
* Find shortest path
* to advertising router
*/
{
- if((etmp=ospf_hash_find(atmp->gr,en->lsa.rt,en->lsa.rt,LSA_T_RT))!=NULL)
+ if ((etmp =
+ ospf_hash_find(atmp->gr, en->lsa.rt, en->lsa.rt,
+ LSA_T_RT)) != NULL)
{
- if((absr==NULL) || (absr->dist>etmp->dist) ||
- ((etmp->dist==absr->dist) && (absroa->areaid<atmp->areaid)))
- {
- absr=etmp;
- absroa=atmp;
+ if ((absr == NULL) || (absr->dist > etmp->dist) ||
+ ((etmp->dist == absr->dist) && (absroa->areaid < atmp->areaid)))
+ {
+ absr = etmp;
+ absroa = atmp;
break;
- }
+ }
}
}
- if((absr==NULL)||(absr->dist==LSINFINITY)||
- (((struct ospf_lsa_rt *)(absr->lsa_body))->veb.bit.e==0))
+ if ((absr == NULL) || (absr->dist == LSINFINITY) ||
+ (((struct ospf_lsa_rt *) (absr->lsa_body))->veb.bit.e == 0))
{
DBG("ASBR is null or its dist=INF\n");
continue;
}
- if(ipa_compare(lt->fwaddr,ipa_from_u32(0))==0)
+ if (ipa_compare(lt->fwaddr, ipa_from_u32(0)) == 0)
{
- if(lt->etos>0) /* FW address == 0 */
+ if (lt->etos > 0) /* FW address == 0 */
{
- met=absr->dist;
- met2=lt->metric;
+ met = absr->dist;
+ met2 = lt->metric;
}
else
{
- met=absr->dist+lt->metric;
- met2=LSINFINITY;
+ met = absr->dist + lt->metric;
+ met2 = LSINFINITY;
}
- tag=lt->tag;
+ tag = lt->tag;
}
- else /* FW address !=0 */
+ else /* FW address !=0 */
{
- inf=NULL;
- WALK_LIST(atmp,po->area_list)
+ inf = NULL;
+ WALK_LIST(atmp, po->area_list)
{
- if((inf=fib_route(&atmp->infib,lt->fwaddr,32))!=NULL)
+ if ((inf = fib_route(&atmp->infib, lt->fwaddr, 32)) != NULL)
{
break;
}
}
- if(inf==NULL)
+ if (inf == NULL)
{
- DBG("Cannot find network route (GW=%I)\n",lt->fwaddr);
- continue;
+ DBG("Cannot find network route (GW=%I)\n", lt->fwaddr);
+ continue;
}
- if(lt->etos>0)
+ if (lt->etos > 0)
{
- met=inf->metric;
- met2=lt->metric;
+ met = inf->metric;
+ met2 = lt->metric;
}
else
{
- met=inf->metric+lt->metric;
- met2=LSINFINITY;
+ met = inf->metric + lt->metric;
+ met2 = LSINFINITY;
}
- tag=lt->tag;
+ tag = lt->tag;
- if((nn=neigh_find(p,&lt->fwaddr,0))!=NULL)
+ if ((nn = neigh_find(p, &lt->fwaddr, 0)) != NULL)
{
- nnh=lt->fwaddr;
- nnhi=nn->iface;
+ nnh = lt->fwaddr;
+ nnhi = nn->iface;
}
else
{
- nnh=inf->en->nh;
- nnhi=inf->en->nhi;
+ nnh = inf->en->nh;
+ nnhi = inf->en->nhi;
}
}
- nf=fib_get(ef,&ip, mlen);
- if((nf->metric==LSINFINITY) || /* nf is new */
- ((met<nf->metric)&&(nf->metric2==met2)) || /* both E1 or E2
- * with same metric */
- ((met2<nf->metric2)&&(nf->metric2!=LSINFINITY)) || /* E2 smaller and
- * 1st is not E1 */
- ((nf->metric2!=LSINFINITY)&&(met2==LSINFINITY))) /* 2nd is E1 and
- * 1st is E2 */
+ nf = fib_get(ef, &ip, mlen);
+ if ((nf->metric == LSINFINITY) || /* nf is new */
+ ((met < nf->metric) && (nf->metric2 == met2)) || /* both E1 or E2
+ * with same metric */
+ ((met2 < nf->metric2) && (nf->metric2 != LSINFINITY)) || /* E2 smaller and
+ * 1st is not E1 */
+ ((nf->metric2 != LSINFINITY) && (met2 == LSINFINITY))) /* 2nd is E1 and
+ * 1st is E2 */
{
- if(nf->metric!=LSINFINITY)
- OSPF_TRACE(D_EVENTS,
- "Rewriting %I/%d met=%d, met2=%d, nmet=%d, nmet2=%d",
- ip, mlen, nf->metric, nf->metric2, met, met2);
- nf->metric=met;
- nf->metric2=met2;
- nf->tag=tag;
-
- if(nnhi!=NULL)
+ if (nf->metric != LSINFINITY)
+ OSPF_TRACE(D_EVENTS,
+ "Rewriting %I/%d met=%d, met2=%d, nmet=%d, nmet2=%d",
+ ip, mlen, nf->metric, nf->metric2, met, met2);
+ nf->metric = met;
+ nf->metric2 = met2;
+ nf->tag = tag;
+
+ if (nnhi != NULL)
{
- nf->nh=nnh;
- nf->nhi=nnhi;
+ nf->nh = nnh;
+ nf->nhi = nnhi;
}
else
{
- if(ipa_compare(absr->nh,ipa_from_u32(0))==0)
- {
- struct ospf_neighbor *neigh;
+ if (ipa_compare(absr->nh, ipa_from_u32(0)) == 0)
+ {
+ struct ospf_neighbor *neigh;
- if((neigh=find_neigh_noifa(po,absr->lsa.rt))==NULL)
+ if ((neigh = find_neigh_noifa(po, absr->lsa.rt)) == NULL)
{
- DBG("Cannot find neighbor\n");
- nf->metric=LSINFINITY; /* delete this route */
- continue;
+ DBG("Cannot find neighbor\n");
+ nf->metric = LSINFINITY; /* delete this route */
+ continue;
}
- nn=neigh_find(p,&neigh->ip,0);
- DBG(" Next hop calculated: %I\n", nn->addr);
- nf->nh=nn->addr;
- nf->nhi=nn->iface;
- }
- else
- {
- nf->nh=absr->nh;
- nf->nhi=absr->nhi;
- }
+ nn = neigh_find(p, &neigh->ip, 0);
+ DBG(" Next hop calculated: %I\n", nn->addr);
+ nf->nh = nn->addr;
+ nf->nhi = nn->iface;
+ }
+ else
+ {
+ nf->nh = absr->nh;
+ nf->nhi = absr->nhi;
+ }
}
}
}
DBG("Now syncing my rt table with nest's\n");
- FIB_ITERATE_INIT(&fit,ef);
+ FIB_ITERATE_INIT(&fit, ef);
noch:
- FIB_ITERATE_START(ef,&fit,nftmp)
+ FIB_ITERATE_START(ef, &fit, nftmp)
{
- nf=(struct extfib *)nftmp;
- if(nf->metric==LSINFINITY)
+ nf = (struct extfib *) nftmp;
+ if (nf->metric == LSINFINITY)
{
net *ne;
-
- ne=net_get(p->table, nf->fn.prefix, nf->fn.pxlen);
+
+ ne = net_get(p->table, nf->fn.prefix, nf->fn.pxlen);
DBG("Deleting rt entry %I\n (IP: %I, GW: %I)\n",
- nf->fn.prefix,ip,nf->nh);
+ nf->fn.prefix, ip, nf->nh);
rte_update(p->table, ne, p, NULL);
/* Now delete my fib */
@@ -488,106 +512,114 @@ noch:
goto noch;
}
else
- if((nf->metric!=nf->oldmetric)||(nf->metric2!=nf->oldmetric2)||
- (!ipa_equal(nf->nh,nf->oldnh))||(nf->tag!=nf->oldtag))
- {
- net *ne;
- rta a0;
- rte *e;
-
- bzero(&a0, sizeof(a0));
-
- a0.proto=p;
- a0.source=RTS_OSPF_EXT;
- a0.scope=SCOPE_UNIVERSE;
- a0.cast=RTC_UNICAST;
- a0.dest=RTD_ROUTER;
- a0.flags=0;
- a0.aflags=0;
- a0.iface=nf->nhi;
- a0.gw=nf->nh;
- 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=nf->metric2;
- e->u.ospf.tag=nf->tag;
- e->pflags = 0;
- e->net=ne;
- e->pref = p->preference;
- DBG("Modifying rt entry %I\n (IP: %I, GW: %I)\n",
- nf->fn.prefix,ip,nf->nh);
- rte_update(p->table, ne, p, e);
-
- nf->oldmetric=nf->metric;
- nf->oldmetric2=nf->metric2;
- nf->oldnh=nf->nh;
- nf->oldtag=nf->tag;
- }
+ if ((nf->metric != nf->oldmetric) || (nf->metric2 != nf->oldmetric2) ||
+ (!ipa_equal(nf->nh, nf->oldnh)) || (nf->tag != nf->oldtag))
+ {
+ net *ne;
+ rta a0;
+ rte *e;
+
+ bzero(&a0, sizeof(a0));
+
+ a0.proto = p;
+ a0.source = RTS_OSPF_EXT;
+ a0.scope = SCOPE_UNIVERSE;
+ a0.cast = RTC_UNICAST;
+ a0.dest = RTD_ROUTER;
+ a0.flags = 0;
+ a0.aflags = 0;
+ a0.iface = nf->nhi;
+ a0.gw = nf->nh;
+ 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 = nf->metric2;
+ e->u.ospf.tag = nf->tag;
+ e->pflags = 0;
+ e->net = ne;
+ e->pref = p->preference;
+ DBG("Modifying rt entry %I\n (IP: %I, GW: %I)\n",
+ nf->fn.prefix, ip, nf->nh);
+ rte_update(p->table, ne, p, e);
+
+ nf->oldmetric = nf->metric;
+ nf->oldmetric2 = nf->metric2;
+ nf->oldnh = nf->nh;
+ nf->oldtag = nf->tag;
+ }
}
FIB_ITERATE_END(nftmp);
}
/* Add LSA into list of candidates in Dijkstra's algorithm */
void
-add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par,
- u16 dist, struct ospf_area *oa)
+add_cand(list * l, struct top_hash_entry *en, struct top_hash_entry *par,
+ u16 dist, struct ospf_area *oa)
{
- node *prev,*n;
- int added=0;
+ node *prev, *n;
+ int added = 0;
struct top_hash_entry *act;
- if(en==NULL) return;
- if(en->lsa.age==LSA_MAXAGE) return;
+ if (en == NULL)
+ return;
+ if (en->lsa.age == LSA_MAXAGE)
+ return;
/* FIXME Does it have link back? Test it! */
- if(en->color==INSPF) return;
+ if (en->color == INSPF)
+ return;
- if(dist>=en->dist) return;
+ if (dist >= en->dist)
+ return;
/*
* FIXME The line above is not a bug, but we don't support
* multiple next hops. I'll start as soon as nest will
*/
- DBG(" Adding candidate: rt: %I, id: %I, type: %u\n",en->lsa.rt,en->lsa.id,en->lsa.type);
+ DBG(" Adding candidate: rt: %I, id: %I, type: %u\n", en->lsa.rt,
+ en->lsa.id, en->lsa.type);
+
+ en->nhi = NULL;
+ en->nh = IPA_NONE;
- en->nhi=NULL;
- en->nh=IPA_NONE;
-
calc_next_hop(en, par, oa);
- if(!en->nhi) return; /* We cannot find next hop, ignore it */
+ if (!en->nhi)
+ return; /* We cannot find next hop, ignore it */
- if(en->color==CANDIDATE) /* We found a shorter path */
+ if (en->color == CANDIDATE) /* We found a shorter path */
{
rem_node(&en->cn);
}
- en->dist=dist;
- en->color=CANDIDATE;
+ en->dist = dist;
+ en->color = CANDIDATE;
- prev=NULL;
+ prev = NULL;
- if(EMPTY_LIST(*l))
+ if (EMPTY_LIST(*l))
{
- add_head(l,&en->cn);
+ add_head(l, &en->cn);
}
else
{
- WALK_LIST(n,*l)
+ WALK_LIST(n, *l)
{
- act=SKIP_BACK(struct top_hash_entry, cn, n);
- if((act->dist>dist)||
- ((act->dist==dist)&&(act->lsa.type==LSA_T_NET)))
+ act = SKIP_BACK(struct top_hash_entry, cn, n);
+ if ((act->dist > dist) ||
+ ((act->dist == dist) && (act->lsa.type == LSA_T_NET)))
{
- if(prev==NULL) add_head(l,&en->cn);
- else insert_node(&en->cn,prev);
- added=1;
- break;
+ if (prev == NULL)
+ add_head(l, &en->cn);
+ else
+ insert_node(&en->cn, prev);
+ added = 1;
+ break;
}
- prev=n;
+ prev = n;
}
- if(!added)
+ if (!added)
{
- add_tail(l,&en->cn);
+ add_tail(l, &en->cn);
}
}
/* FIXME Some VLINK stuff should be here */
@@ -595,73 +627,78 @@ add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par,
void
calc_next_hop(struct top_hash_entry *en, struct top_hash_entry *par,
- struct ospf_area *oa)
+ struct ospf_area *oa)
{
struct ospf_neighbor *neigh;
- struct proto *p=&oa->po->proto;
- struct proto_ospf *po=oa->po;
+ struct proto *p = &oa->po->proto;
+ struct proto_ospf *po = oa->po;
struct ospf_iface *ifa;
- u32 myrid=p->cf->global->router_id;
+ u32 myrid = p->cf->global->router_id;
DBG(" Next hop called.\n");
- if(ipa_equal(par->nh,IPA_NONE))
+ if (ipa_equal(par->nh, IPA_NONE))
{
neighbor *nn;
DBG(" Next hop calculating for id: %I rt: %I type: %u\n",
- en->lsa.id,en->lsa.rt,en->lsa.type);
+ en->lsa.id, en->lsa.rt, en->lsa.type);
- if(par==oa->rt)
+ if (par == oa->rt)
{
- if(en->lsa.type==LSA_T_NET)
+ if (en->lsa.type == LSA_T_NET)
{
- if(en->lsa.rt==myrid)
- {
- WALK_LIST(ifa,po->iface_list)
- if(ipa_compare(ifa->iface->addr->ip,ipa_from_u32(en->lsa.id))==0)
- {
- en->nhi=ifa->iface;
- return;
- }
- log(L_ERR "I didn't find interface for my self originated LSA!\n");
- /* This could sometimes happen */
- return;
- }
- else
- {
- ip_addr ip=ipa_from_u32(en->lsa.id);
- nn=neigh_find(p,&ip,0);
- if(nn) en->nhi=nn->iface;
- return;
- }
+ if (en->lsa.rt == myrid)
+ {
+ WALK_LIST(ifa, po->iface_list)
+ if (ipa_compare(ifa->iface->addr->ip, ipa_from_u32(en->lsa.id)) ==
+ 0)
+ {
+ en->nhi = ifa->iface;
+ return;
+ }
+ log(L_ERR "I didn't find interface for my self originated LSA!\n");
+ /* This could sometimes happen */
+ return;
+ }
+ else
+ {
+ ip_addr ip = ipa_from_u32(en->lsa.id);
+ nn = neigh_find(p, &ip, 0);
+ if (nn)
+ en->nhi = nn->iface;
+ return;
+ }
}
else
{
- if((neigh=find_neigh_noifa(po,en->lsa.rt))==NULL) return;
- en->nhi=neigh->ifa->iface;
- en->nh=neigh->ip; /* Yes, neighbor is it's own next hop */
- return;
+ if ((neigh = find_neigh_noifa(po, en->lsa.rt)) == NULL)
+ return;
+ en->nhi = neigh->ifa->iface;
+ en->nh = neigh->ip; /* Yes, neighbor is it's own next hop */
+ return;
}
}
- if(par->lsa.type==LSA_T_NET)
+ if (par->lsa.type == LSA_T_NET)
{
- if(en->lsa.type==LSA_T_NET) bug("Parent for net is net?");
- if((en->nhi=par->nhi)==NULL)
- bug("Did not find next hop interface for INSPF lsa!");
- if((neigh=find_neigh_noifa(po,en->lsa.rt))==NULL) return;
- en->nhi=neigh->ifa->iface;
- en->nh=neigh->ip; /* Yes, neighbor is it's own next hop */
+ if (en->lsa.type == LSA_T_NET)
+ bug("Parent for net is net?");
+ if ((en->nhi = par->nhi) == NULL)
+ bug("Did not find next hop interface for INSPF lsa!");
+ if ((neigh = find_neigh_noifa(po, en->lsa.rt)) == NULL)
+ return;
+ en->nhi = neigh->ifa->iface;
+ en->nh = neigh->ip; /* Yes, neighbor is it's own next hop */
return;
}
- else /* Parent is some RT neighbor */
+ else /* Parent is some RT neighbor */
{
- log(L_ERR "Router's parent has no next hop. (EN=%I, PAR=%I)", en->lsa.id, par->lsa.id);
- /* I hoped this would never happen */
+ log(L_ERR "Router's parent has no next hop. (EN=%I, PAR=%I)",
+ en->lsa.id, par->lsa.id);
+ /* I hoped this would never happen */
return;
}
}
- en->nh=par->nh;
- en->nhi=par->nhi;
+ en->nh = par->nh;
+ en->nhi = par->nhi;
DBG(" Next hop calculated: %I.\n", en->nh);
}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 07:30:47 +0000