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authorOndrej Filip <feela@network.cz>2000-09-04 00:18:40 +0200
committerOndrej Filip <feela@network.cz>2000-09-04 00:18:40 +0200
commitfdb19982020abeddf2d9eb73efae92ae2cc58d93 (patch)
tree4c837c9252bb1d3324c0a4005cd600d3081c7810 /proto
parentf02e4258b9bb7f823ddfbfb88284c868502b1433 (diff)
downloadbird-fdb19982020abeddf2d9eb73efae92ae2cc58d93.tar
bird-fdb19982020abeddf2d9eb73efae92ae2cc58d93.zip
Serious bug in ext lsa origination found. Going for 1.0.4.
Diffstat (limited to 'proto')
-rw-r--r--proto/ospf/lsalib.c4
-rw-r--r--proto/ospf/ospf.c1
-rw-r--r--proto/ospf/ospf.h17
-rw-r--r--proto/ospf/rt.c6
-rw-r--r--proto/ospf/topology.c19
5 files changed, 38 insertions, 9 deletions
diff --git a/proto/ospf/lsalib.c b/proto/ospf/lsalib.c
index 16e1a80..27e2782 100644
--- a/proto/ospf/lsalib.c
+++ b/proto/ospf/lsalib.c
@@ -123,7 +123,7 @@ htonlsab(void *h, void *n, u8 type, u16 len)
hrt=h;
links=hrt->links;
- nrt->VEB=hrt->VEB;
+ nrt->veb.byte=hrt->veb.byte;
nrt->padding=0;
nrt->links=htons(hrt->links);
nrtl=(struct ospf_lsa_rt_link *)(nrt+1);
@@ -220,7 +220,7 @@ ntohlsab(void *n, void *h, u8 type, u16 len)
nrt=n;
hrt=h;
- hrt->VEB=nrt->VEB;
+ hrt->veb.byte=nrt->veb.byte;
hrt->padding=0;
links=hrt->links=ntohs(nrt->links);
nrtl=(struct ospf_lsa_rt_link *)(nrt+1);
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index e69afbc..64bfcdc 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -164,6 +164,7 @@ ospf_init(struct proto_config *c)
p->rte_same = ospf_rte_same;
po->rfc1583=oc->rfc1583;
+ po->ebit=0;
return p;
}
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index dd63c4c..d5ff8e9 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -209,8 +209,20 @@ struct ospf_lsa_header {
u16 length;
};
+struct vebb {
+ u8 b:1;
+ u8 e:1;
+ u8 v:1;
+ u8 padding:5;
+};
+
+union veb {
+ u8 byte;
+ struct vebb bit;
+};
+
struct ospf_lsa_rt {
- u8 VEB;
+ union veb veb;
#define LSA_RT_V 5
#define LSA_RT_E 6
#define LSA_RT_B 7
@@ -375,7 +387,8 @@ struct proto_ospf {
list area_list;
int areano; /* Number of area I belong to */
struct fib efib; /* FIB for external routes */
- int rfc1583;
+ int rfc1583; /* RFC1583 compatibility */
+ int ebit; /* Did I originate any ext lsa? */
};
struct ospf_iface_patt {
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index a7b541d..39e84bd 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -96,7 +96,7 @@ ospf_rt_spfa(struct ospf_area *oa)
{
case LSA_T_RT:
rt=(struct ospf_lsa_rt *)act->lsa_body;
- if((rt->VEB)&(1>>LSA_RT_V)) oa->trcap=1;
+ 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++)
@@ -269,6 +269,7 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
struct proto *p=&po->proto;
struct ospf_lsa_ext *le;
struct ospf_lsa_ext_tos *lt;
+ struct ospf_lsa_rt *rt;
int mlen;
ip_addr ip,nnh;
struct iface *nnhi=NULL;
@@ -347,7 +348,8 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
}
}
}
- if((absr==NULL)||(absr->dist==LSINFINITY))
+ rt=(struct ospf_lsa_rt *)absr->lsa_body;
+ if((absr==NULL)||(absr->dist==LSINFINITY)||(rt->veb.bit.e==0))
{
DBG("ASBR is null or its dist=INF\n");
continue;
diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index e3e240f..a0dd18a 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -24,7 +24,7 @@ void *
originate_rt_lsa_body(struct ospf_area *oa, u16 *length, struct proto_ospf *p)
{
struct ospf_iface *ifa;
- int j=0,k=0,v=0,e=0,b=0;
+ int j=0,k=0,v=0;
u16 i=0;
struct ospf_lsa_rt *rt;
struct ospf_lsa_rt_link *ln;
@@ -45,8 +45,9 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length, struct proto_ospf *p)
}
rt=mb_allocz(p->proto.pool, sizeof(struct ospf_lsa_rt)+
i*sizeof(struct ospf_lsa_rt_link));
- if((p->areano>1) && (!oa->stub)) e=1;
- rt->VEB=(v>>LSA_RT_V)+(e>>LSA_RT_E)+(b>>LSA_RT_B);
+ if((p->areano>1) && (!oa->stub)) rt->veb.bit.b=1;
+ if((p->ebit)&&(!oa->stub)) rt->veb.bit.e=1;
+ rt->veb.bit.v=v;
ln=(struct ospf_lsa_rt_link *)(rt+1);
WALK_LIST (ifa, p->iface_list)
@@ -352,6 +353,9 @@ originate_ext_lsa_body(net *n, rte *e, struct proto_ospf *po, struct ea_list *at
* external LSA. LSA header of such LSA does not contain information about
* prefix lenght, so if I have to originate multiple LSAs for route with
* different prefixes I try to increment prefix id to find a "free" one.
+ *
+ * The function also set flag ebit. If it's first time, the new router lsa
+ * origination is necessary.
*/
void
originate_ext_lsa(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs)
@@ -406,6 +410,15 @@ originate_ext_lsa(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs)
body=originate_ext_lsa_body(n, e, po, attrs);
}
mb_free(body);
+
+ if(po->ebit==0)
+ {
+ po->ebit=1;
+ WALK_LIST(oa, po->area_list)
+ {
+ schedule_rt_lsa(oa);
+ }
+ }
}