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Diffstat (limited to 'proto/ospf/ospf.c')
-rw-r--r--proto/ospf/ospf.c139
1 files changed, 99 insertions, 40 deletions
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 70be3cbd..3f19665d 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -20,6 +20,79 @@
#define IAMMASTER(x) ((x) & DBDES_MS)
#define INISET(x) ((x) & DBDES_I)
+
+void
+fill_ospf_pkt_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
+{
+ struct ospf_packet *pkt;
+ struct proto *p;
+
+ p=(struct proto *)(ifa->proto);
+
+ pkt=(struct ospf_packet *)buf;
+
+ pkt->version=OSPF_VERSION;
+
+ pkt->type=h_type;
+
+ pkt->routerid=htonl(p->cf->global->router_id);
+ pkt->areaid=htonl(ifa->area);
+ pkt->autype=htons(ifa->autype);
+ pkt->checksum=0;
+}
+
+void
+ospf_tx_authenticate(struct ospf_iface *ifa, struct ospf_packet *pkt)
+{
+ /* FIXME Nothing done */
+}
+
+void
+ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt)
+{
+ ospf_tx_authenticate(ifa, pkt);
+
+ /* Count checksum */
+ pkt->checksum=ipsum_calculate(pkt,sizeof(struct ospf_packet)-8,
+ (pkt+1),ntohs(pkt->length)-sizeof(struct ospf_packet),NULL);
+}
+
+void ospf_dbdes_tx(struct ospf_iface *ifa)
+{
+ struct ospf_dbdes_packet *pkt;
+ struct ospf_packet *op;
+ struct ospf_neighbor *n;
+ u16 length;
+ struct proto *p;
+
+ p=(struct proto *)(ifa->proto);
+
+ WALK_LIST (n, ifa->neigh_list) /* Try to send db_des */
+ {
+ switch(n->state)
+ {
+ case NEIGHBOR_EXSTART: /* Send empty packets */
+ pkt=(struct ospf_dbdes_packet *)(ifa->ip_sk->tbuf);
+ op=(struct ospf_packet *)pkt;
+
+ fill_ospf_pkt_hdr(ifa, pkt, DBDES);
+ pkt->iface_mtu= ((struct iface *)ifa)->mtu;
+ pkt->options= ifa->options;
+ pkt->imms=n->myimms;
+ pkt->ddseq=n->dds;
+ length=sizeof(struct ospf_dbdes_packet);
+ op->length=htons(length);
+ ospf_pkt_finalize(ifa, op);
+ sk_send_to(ifa->ip_sk,length, n->ip, OSPF_PROTO);
+ debug("%s: DB_DES sent for %u.\n", p->name, n->rid);
+
+ /*case NEIGHBOR_EXCHANGE: */
+ default: /* Ignore it */
+ break;
+ }
+ }
+}
+
void
rxmt_timer_hook(timer *timer)
{
@@ -30,6 +103,7 @@ rxmt_timer_hook(timer *timer)
p=(struct proto *)(ifa->proto);
debug("%s: RXMT timer fired on interface %s.\n",
p->name, ifa->iface->name);
+ ospf_dbdes_tx(ifa);
}
struct ospf_neighbor *
@@ -560,15 +634,23 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
debug("%s: I'm slave to %u. \n", p->name, nrid);
ospf_neigh_sm(n, INM_NEGDONE);
}
- if(((ps->imms | DBDES_M)== DBDES_M) && (n->rid < myrid) &&
- (n->dds == ps->ddseq) && (size == sizeof(struct ospf_dbdes_packet)))
+ else
{
- /* I'm master! */
- n->options=ps->options;
- n->ddr=ps->ddseq;
- n->imms=ps->imms;
- debug("%s: I'm master to %u. \n", p->name, nrid);
- ospf_neigh_sm(n, INM_NEGDONE);
+ if(((ps->imms & (DBDES_I|DBDES_MS))== 0) && (n->rid < myrid) &&
+ (n->dds == ps->ddseq))
+ {
+ /* I'm master! */
+ n->options=ps->options;
+ n->ddr=ps->ddseq;
+ n->imms=ps->imms;
+ debug("%s: I'm master to %u. \n", p->name, nrid);
+ ospf_neigh_sm(n, INM_NEGDONE);
+ }
+ else
+ {
+ debug("%s: Nothing happend to %u (imms=%u)", p->name, nrid,
+ ps->imms);
+ }
}
break;
@@ -639,12 +721,15 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
ospf_neigh_sm(n, INM_SEQMIS);
}
break;
+ defaut:
+ die("%s: Received dbdes from %u in unknown state. (%u)\n", p->name, nrid);
+ break;
}
}
void
ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
- struct ospf_iface *ifa, int size)
+ struct ospf_iface *ifa, int size, ip_addr faddr)
{
char sip[100]; /* FIXME: Should be smaller */
u32 nrid, *pnrid;
@@ -692,6 +777,7 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
n=mb_alloc(p->pool, sizeof(struct ospf_neighbor));
add_tail(&ifa->neigh_list, NODE n);
n->rid=nrid;
+ n->ip=faddr;
n->dr=ntohl(ps->dr);
n->bdr=ntohl(ps->bdr);
n->priority=ps->priority;
@@ -730,7 +816,6 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
(n->state>=NEIGHBOR_2WAY))
{
ospf_int_sm(ifa, ISM_BACKS);
- DBG("BACKS");
}
if((n->rid==ntohl(ps->dr)) && (n->dr!=ntohl(ps->dr)))
{
@@ -746,7 +831,6 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
if((n->rid==ntohl(ps->bdr)) && (n->state>=NEIGHBOR_2WAY))
{
ospf_int_sm(ifa, ISM_BACKS);
- DBG("BACKS");
}
if((n->rid==ntohl(ps->bdr)) && (n->bdr!=ntohl(ps->bdr)))
{
@@ -769,7 +853,7 @@ ospf_rx_hook(sock *sk, int size)
struct ospf_packet *ps;
struct ospf_iface *ifa;
struct proto *p;
- u8 i;
+ int i;
u8 *pu8;
@@ -849,7 +933,7 @@ ospf_rx_hook(sock *sk, int size)
{
case HELLO:
DBG("%s: Hello received.\n", p->name);
- ospf_hello_rx((struct ospf_hello_packet *)ps, p, ifa, size);
+ ospf_hello_rx((struct ospf_hello_packet *)ps, p, ifa, size, sk->faddr);
break;
case DBDES:
DBG("%s: Database description received.\n", p->name);
@@ -1004,26 +1088,6 @@ ospf_iface_clasify(struct iface *ifa)
}
void
-fill_ospf_pkt_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
-{
- struct ospf_packet *pkt;
- struct proto *p;
-
- p=(struct proto *)(ifa->proto);
-
- pkt=(struct ospf_packet *)buf;
-
- pkt->version=OSPF_VERSION;
-
- pkt->type=h_type;
-
- pkt->routerid=htonl(p->cf->global->router_id);
- pkt->areaid=htonl(ifa->area);
- pkt->autype=htons(ifa->autype);
- pkt->checksum=0;
-}
-
-void
hello_timer_hook(timer *timer)
{
struct ospf_iface *ifa;
@@ -1068,14 +1132,9 @@ hello_timer_hook(timer *timer)
}
length=sizeof(struct ospf_hello_packet)+i*sizeof(u32);
+ op->length=htons(length);
- op->length=ntohs(length);
-
- /* FIXME Do authentification */
-
- /* Count checksum */
- op->checksum=ipsum_calculate(op,sizeof(struct ospf_packet)-8,
- &(pkt->netmask),length-sizeof(struct ospf_packet),NULL);
+ ospf_pkt_finalize(ifa, op);
/* And finally send it :-) */
sk_send(ifa->hello_sk,length);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 02:35:08 +0000