Commit 273fd2c1 authored by Ondřej Filip's avatar Ondřej Filip

Many bugfixes (I don't remember all of them):

Added link ID calculation for external routes with same prefix but
	different mask.
Bugfix in NET lsa origination.
Bugfix in NET hashing.
Bugfix in LSA installing.
parent 2d37d36c
......@@ -11,6 +11,8 @@
void
flush_lsa(struct top_hash_entry *en, struct ospf_area *oa)
{
debug("Going to remove node: Type: %u, Id: %I, Rt: %I, Age: %u\n",
en->lsa.type, en->lsa.id, en->lsa.rt, en->lsa.age);
s_rem_node(SNODE en);
ospf_hash_delete(oa->gr,en);
}
......@@ -368,7 +370,6 @@ lsa_comp(struct ospf_lsa_header *l1, struct ospf_lsa_header *l2)
if((l1->age==LSA_MAXAGE)&&(l2->age!=LSA_MAXAGE)) return CMP_NEWER;
if((l2->age==LSA_MAXAGE)&&(l1->age!=LSA_MAXAGE)) return CMP_OLDER;
debug("Abs=%u\n",abs(l1->age-l2->age));
if(abs(l1->age-l2->age)>LSA_MAXAGEDIFF)
return l1->age<l2->age ? CMP_NEWER : CMP_OLDER;
......@@ -384,8 +385,6 @@ lsa_install_new(struct ospf_lsa_header *lsa, void *body, struct ospf_area *oa,
unsigned i;
struct top_hash_entry *en;
if(body==NULL) die("AA");
if((en=ospf_hash_find_header(oa->gr,lsa))==NULL)
{
en=ospf_hash_get_header(oa->gr,lsa);
......@@ -407,9 +406,12 @@ lsa_install_new(struct ospf_lsa_header *lsa, void *body, struct ospf_area *oa,
}
}
}
if(change) s_rem_node(SNODE en);
s_rem_node(SNODE en);
}
DBG("Inst lsa: Id: %I, Rt: %I, Type: %u, Age: %u, Sum: %u, Sn: 0x%x\n",
lsa->id, lsa->rt, lsa->type, lsa->age, lsa->checksum, lsa->sn);
s_add_tail(&oa->lsal, SNODE en);
en->inst_t=now;
if(en->lsa_body!=NULL) mb_free(en->lsa_body);
......
......@@ -308,12 +308,12 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p,
continue;
}
ntohlsah(lsa,&lsatmp);
debug("Update Type: %u ID: %I RT: %I, Sn: 0x%08x Age: %u, Sum: %u\n",
DBG("Update Type: %u ID: %I RT: %I, Sn: 0x%08x Age: %u, Sum: %u\n",
lsatmp.type, lsatmp.id, lsatmp.rt, lsatmp.sn, lsatmp.age,
lsatmp.checksum);
lsadb=ospf_hash_find_header(oa->gr, &lsatmp);
if(lsadb)
debug("I have Type: %u ID: %I RT: %I, Sn: 0x%08x Age: %u, Sum: %u\n",
DBG("I have Type: %u ID: %I RT: %I, Sn: 0x%08x Age: %u, Sum: %u\n",
lsadb->lsa.type, lsadb->lsa.id, lsadb->lsa.rt, lsadb->lsa.sn,
lsadb->lsa.age, lsadb->lsa.checksum);
......
......@@ -247,12 +247,25 @@ ospf_rt_notify(struct proto *p, net *n, rte *new, rte *old, ea_list *attrs)
u32 rtid=po->proto.cf->global->router_id;
struct ospf_area *oa;
struct top_hash_entry *en;
u32 pr=ipa_to_u32(n->n.prefix);
struct ospf_lsa_ext *ext;
int i;
/* Flush old external LSA */
WALK_LIST(oa, po->area_list)
{
if(en=ospf_hash_find(oa->gr, ipa_to_u32(n->n.prefix), rtid, LSA_T_EXT))
net_flush_lsa(en,po,oa);
for(i=0;i<MAXNETS;i++,pr++)
{
if(en=ospf_hash_find(oa->gr, pr, rtid, LSA_T_EXT))
{
ext=en->lsa_body;
if(ipa_compare(ext->netmask, ipa_mkmask(n->n.pxlen))==0)
{
net_flush_lsa(en,po,oa);
break;
}
}
}
}
}
}
......
......@@ -11,6 +11,7 @@
#define SIPH 64 /* FIXME Size Of IP header */
#define MAXNETS 10
#include "nest/bird.h"
......
......@@ -8,8 +8,6 @@
#include "ospf.h"
#define LOCAL_DEBUG
void
init_infib(struct fib_node *fn)
{
......@@ -57,12 +55,16 @@ ospf_rt_spfa(struct ospf_area *oa)
en->color=OUTSPF;
en->dist=LSINFINITY;
en->nhi=NULL;
en->nh=ipa_from_u32(0);
DBG("Infinitying Type: %u, Id: %I, Rt: %I\n", en->lsa.type, en->lsa.id,
en->lsa.rt);
}
FIB_WALK(in,nftmp)
{
nf=(struct infib *)nftmp;
nf->metric=LSINFINITY;
nf->en=NULL;
}
FIB_WALK_END;
......@@ -109,16 +111,22 @@ ospf_rt_spfa(struct ospf_area *oa)
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);
tmp=ospf_hash_find(oa->gr,rtl->data,rtl->id,LSA_T_NET);
if(tmp==NULL) DBG("Fuck!\n");
else DBG("Found. :-)\n");
break;
......@@ -130,10 +138,12 @@ ospf_rt_spfa(struct ospf_area *oa)
log("Unknown link type in router lsa.");
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: /* FIXME Add to fib */
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));
......@@ -141,13 +151,13 @@ ospf_rt_spfa(struct ospf_area *oa)
{
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));
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("Fuck!\n");
......@@ -170,8 +180,9 @@ again:
ln=en->lsa_body;
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);
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 */
......@@ -211,12 +222,12 @@ again:
a0.source=RTS_OSPF;
a0.scope=SCOPE_UNIVERSE; /* What's this good for? */
a0.cast=RTC_UNICAST;
a0.dest=RTD_ROUTER;
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;
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;
......@@ -225,8 +236,8 @@ again:
e->pflags = 0;
e->net=ne;
e->pref = p->preference;
DBG("Modifying rt entry %I\n (IP: %I, GW: %I, Iface: %s)\n",
nf->fn.prefix,ip,en->nh,en->nhi->name);
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);
}
}
......@@ -282,6 +293,9 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
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);
if(lt->metric==LSINFINITY) continue;
ip=ipa_and(ipa_from_u32(en->lsa.id),le->netmask);
mlen=ipa_mklen(le->netmask);
......@@ -296,11 +310,10 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
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) continue;
/* Some intra area path exists */
}
if(nf!=NULL) continue; /* Some intra area path exists */
absr=NULL;
absroa=NULL;
nnhi=NULL;
......@@ -320,7 +333,11 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
}
}
}
if((absr==NULL)||(absr->dist==LSINFINITY)) continue;
if((absr==NULL)||(absr->dist==LSINFINITY))
{
DBG("ABSR is null or its dist=INF\n");
continue;
}
if(ipa_compare(lt->fwaddr,ipa_from_u32(0))==0)
{
......@@ -346,7 +363,13 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
break;
}
}
if(nf==NULL) continue;
if(nf==NULL)
{
DBG("Cannot find network route (GW=%I\n",lt->fwaddr);
continue;
}
if(lt->etos>0)
{
met=nf->metric;
......@@ -385,6 +408,7 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
if((neigh=find_neigh_noifa(po,absr->lsa.rt))==NULL)
{
DBG("Cannot find neighbor\n");
continue;
}
nn=neigh_find(p,&neigh->ip,0);
......@@ -438,7 +462,6 @@ noch:
a0.aflags=0;
a0.iface=nf->nhi;
a0.gw=nf->nh;
a0.from=nf->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;
......@@ -526,22 +549,65 @@ calc_next_hop(struct top_hash_entry *par, struct top_hash_entry *en,
struct ospf_neighbor *neigh;
struct proto *p=&oa->po->proto;
struct proto_ospf *po=oa->po;
struct ospf_iface *ifa;
DBG(" Next hop called\n");
if(par==oa->rt) return;
if(par->nhi==NULL)
if(ipa_to_u32(par->nh)==0)
{
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,par->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;
if(par->lsa.type!=LSA_T_RT)
{
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);
en->nh=nn->addr;
en->nhi=nn->iface;
return;
}
else
{
if(par==oa->rt)
{
if(en->lsa.type==LSA_T_NET)
{
struct ospf_lsa_net *ne;
ne=en->lsa_body;
DBG("I'm parent (Net=%I)\n",(en->lsa.id & ipa_to_u32(ne->netmask)));
WALK_LIST(ifa, oa->po->iface_list)
{
if(ipa_to_u32(ipa_and(ifa->iface->addr->ip,
ipa_mkmask(ifa->iface->addr->pxlen))) ==
(en->lsa.id & ipa_to_u32(ne->netmask)))
{
en->nhi=ifa->iface;
en->nh=ipa_from_u32(0);
DBG("Ifa: %s\n",en->nhi->name);
return;
}
}
}
else
{
if((neigh=find_neigh_noifa(po,par->lsa.rt))==NULL) return;
nn=neigh_find(p,&neigh->ip,0);
en->nh=ipa_from_u32(0);
en->nhi=nn->iface;
}
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);
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);
DBG(" Next hop calculated: %I..\n", en->nh);
}
......@@ -120,8 +120,8 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length, struct proto_ospf *p)
if(((ifa->state==OSPF_IS_DR) && (j==1)) || (k==1))
{
ln->type=LSART_NET;
ln->id=ipa_to_u32(ifa->drip);
ln->data=ipa_to_u32(ifa->iface->addr->ip);
ln->id=ifa->drid;
ln->data=ipa_to_u32(ifa->drip);
ln->metric=ifa->cost;
ln->notos=0;
}
......@@ -227,6 +227,7 @@ originate_rt_lsa(struct ospf_area *oa)
en=lsa_install_new(&lsa, body, oa, &po->proto);
oa->rt=en;
flood_lsa(NULL,NULL,&oa->rt->lsa,po,NULL,oa,1);
schedule_rtcalc(oa);
}
void *
......@@ -300,6 +301,8 @@ originate_net_lsa(struct ospf_iface *ifa, struct proto_ospf *po)
body=originate_net_lsa_body(ifa, &lsa.length, po);
lsasum_calculate(&lsa,body,po);
ifa->nlsa=lsa_install_new(&lsa, body, ifa->oa, &po->proto);
debug("NetLsa: Id: %I, Sum: %u Sn: 0x%x\n",ifa->nlsa->lsa.id,
ifa->nlsa->lsa.checksum, ifa->nlsa->lsa.sn);
flood_lsa(NULL,NULL,&ifa->nlsa->lsa,po,NULL,ifa->oa,1);
}
......@@ -350,7 +353,10 @@ originate_ext_lsa(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs)
u32 rtid=po->proto.cf->global->router_id;
struct top_hash_entry *en=NULL;
void *body=NULL;
struct proto *p=&po->proto;
struct ospf_area *oa;
struct ospf_lsa_ext *ext1,*ext2;
int i;
debug("%s: Originating Ext lsa for %I/%d.\n", po->proto.name, n->n.prefix,
n->n.pxlen);
......@@ -363,6 +369,28 @@ originate_ext_lsa(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs)
body=originate_ext_lsa_body(n, e, po, attrs);
lsa.length=sizeof(struct ospf_lsa_ext)+sizeof(struct ospf_lsa_ext_tos)+
sizeof(struct ospf_lsa_header);
ext1=body;
oa=HEAD(po->area_list);
for(i=0;i<MAXNETS;i++)
{
if((en=ospf_hash_find_header(oa->gr, &lsa))!=NULL)
{
ext2=en->lsa_body;
if(ipa_compare(ext1->netmask,ext2->netmask)!=0) lsa.id++;
else break;
}
else break;
}
if(i==MAXNETS)
{
log("%s: got more routes for one network then %d, ignoring",p->name,
MAXNETS);
mb_free(body);
return;
}
lsasum_calculate(&lsa,body,po);
WALK_LIST(oa, po->area_list)
{
......@@ -411,11 +439,7 @@ ospf_top_hash_u32(u32 a)
static inline unsigned
ospf_top_hash(struct top_graph *f, u32 lsaid, u32 rtrid, u32 type)
{
#if 1 /* Dirty patch to make rt table calculation work. */
return (ospf_top_hash_u32(lsaid) + ospf_top_hash_u32((type==2) ? lsaid : rtrid) + type) & f->hash_mask;
#else
return (ospf_top_hash_u32(lsaid) + ospf_top_hash_u32(rtrid) + type) & f->hash_mask;
#endif
}
struct top_graph *
......@@ -486,21 +510,8 @@ ospf_hash_find(struct top_graph *f, u32 lsa, u32 rtr, u32 type)
{
struct top_hash_entry *e = f->hash_table[ospf_top_hash(f, lsa, rtr, type)];
#if 1
if(type==2 && lsa==rtr)
{
while (e && (e->lsa.id != lsa || e->lsa.type != 2 ))
e = e->next;
}
else
{
while (e && (e->lsa.id != lsa || e->lsa.type != type || e->lsa.rt != rtr))
e = e->next;
}
#else
while (e && (e->lsa.id != lsa || e->lsa.rt != rtr || e->lsa.type != type))
e = e->next;
#endif
return e;
}
......
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