Sending DBDES packet in EXSTART done.
This commit is contained in:
Ondrej Filip
parent
1183b6b229
commit
986e34131d
2 changed files with 103 additions and 44 deletions
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@ -20,6 +20,79 @@
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#define IAMMASTER(x) ((x) & DBDES_MS)
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#define INISET(x) ((x) & DBDES_I)
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void
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fill_ospf_pkt_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
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{
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struct ospf_packet *pkt;
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struct proto *p;
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p=(struct proto *)(ifa->proto);
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pkt=(struct ospf_packet *)buf;
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pkt->version=OSPF_VERSION;
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pkt->type=h_type;
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pkt->routerid=htonl(p->cf->global->router_id);
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pkt->areaid=htonl(ifa->area);
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pkt->autype=htons(ifa->autype);
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pkt->checksum=0;
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}
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void
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ospf_tx_authenticate(struct ospf_iface *ifa, struct ospf_packet *pkt)
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{
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/* FIXME Nothing done */
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}
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void
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ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt)
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{
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ospf_tx_authenticate(ifa, pkt);
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/* Count checksum */
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pkt->checksum=ipsum_calculate(pkt,sizeof(struct ospf_packet)-8,
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(pkt+1),ntohs(pkt->length)-sizeof(struct ospf_packet),NULL);
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}
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void ospf_dbdes_tx(struct ospf_iface *ifa)
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{
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struct ospf_dbdes_packet *pkt;
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struct ospf_packet *op;
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struct ospf_neighbor *n;
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u16 length;
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struct proto *p;
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p=(struct proto *)(ifa->proto);
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WALK_LIST (n, ifa->neigh_list) /* Try to send db_des */
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{
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switch(n->state)
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{
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case NEIGHBOR_EXSTART: /* Send empty packets */
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pkt=(struct ospf_dbdes_packet *)(ifa->ip_sk->tbuf);
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op=(struct ospf_packet *)pkt;
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fill_ospf_pkt_hdr(ifa, pkt, DBDES);
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pkt->iface_mtu= ((struct iface *)ifa)->mtu;
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pkt->options= ifa->options;
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pkt->imms=n->myimms;
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pkt->ddseq=n->dds;
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length=sizeof(struct ospf_dbdes_packet);
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op->length=htons(length);
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ospf_pkt_finalize(ifa, op);
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sk_send_to(ifa->ip_sk,length, n->ip, OSPF_PROTO);
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debug("%s: DB_DES sent for %u.\n", p->name, n->rid);
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/*case NEIGHBOR_EXCHANGE: */
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default: /* Ignore it */
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break;
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}
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}
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}
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void
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rxmt_timer_hook(timer *timer)
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{
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@ -30,6 +103,7 @@ rxmt_timer_hook(timer *timer)
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p=(struct proto *)(ifa->proto);
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debug("%s: RXMT timer fired on interface %s.\n",
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p->name, ifa->iface->name);
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ospf_dbdes_tx(ifa);
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}
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struct ospf_neighbor *
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@ -560,15 +634,23 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
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debug("%s: I'm slave to %u. \n", p->name, nrid);
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ospf_neigh_sm(n, INM_NEGDONE);
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}
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if(((ps->imms | DBDES_M)== DBDES_M) && (n->rid < myrid) &&
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(n->dds == ps->ddseq) && (size == sizeof(struct ospf_dbdes_packet)))
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else
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{
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/* I'm master! */
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n->options=ps->options;
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n->ddr=ps->ddseq;
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n->imms=ps->imms;
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debug("%s: I'm master to %u. \n", p->name, nrid);
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ospf_neigh_sm(n, INM_NEGDONE);
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if(((ps->imms & (DBDES_I|DBDES_MS))== 0) && (n->rid < myrid) &&
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(n->dds == ps->ddseq))
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{
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/* I'm master! */
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n->options=ps->options;
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n->ddr=ps->ddseq;
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n->imms=ps->imms;
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debug("%s: I'm master to %u. \n", p->name, nrid);
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ospf_neigh_sm(n, INM_NEGDONE);
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}
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else
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{
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debug("%s: Nothing happend to %u (imms=%u)", p->name, nrid,
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ps->imms);
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}
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}
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break;
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@ -639,12 +721,15 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
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ospf_neigh_sm(n, INM_SEQMIS);
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}
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break;
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defaut:
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die("%s: Received dbdes from %u in unknown state. (%u)\n", p->name, nrid);
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break;
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}
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}
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void
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ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
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struct ospf_iface *ifa, int size)
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struct ospf_iface *ifa, int size, ip_addr faddr)
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{
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char sip[100]; /* FIXME: Should be smaller */
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u32 nrid, *pnrid;
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@ -692,6 +777,7 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
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n=mb_alloc(p->pool, sizeof(struct ospf_neighbor));
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add_tail(&ifa->neigh_list, NODE n);
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n->rid=nrid;
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n->ip=faddr;
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n->dr=ntohl(ps->dr);
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n->bdr=ntohl(ps->bdr);
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n->priority=ps->priority;
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@ -730,7 +816,6 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
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(n->state>=NEIGHBOR_2WAY))
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{
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ospf_int_sm(ifa, ISM_BACKS);
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DBG("BACKS");
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}
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if((n->rid==ntohl(ps->dr)) && (n->dr!=ntohl(ps->dr)))
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{
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@ -746,7 +831,6 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
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if((n->rid==ntohl(ps->bdr)) && (n->state>=NEIGHBOR_2WAY))
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{
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ospf_int_sm(ifa, ISM_BACKS);
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DBG("BACKS");
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}
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if((n->rid==ntohl(ps->bdr)) && (n->bdr!=ntohl(ps->bdr)))
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{
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@ -769,7 +853,7 @@ ospf_rx_hook(sock *sk, int size)
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struct ospf_packet *ps;
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struct ospf_iface *ifa;
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struct proto *p;
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u8 i;
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int i;
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u8 *pu8;
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@ -849,7 +933,7 @@ ospf_rx_hook(sock *sk, int size)
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{
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case HELLO:
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DBG("%s: Hello received.\n", p->name);
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ospf_hello_rx((struct ospf_hello_packet *)ps, p, ifa, size);
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ospf_hello_rx((struct ospf_hello_packet *)ps, p, ifa, size, sk->faddr);
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break;
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case DBDES:
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DBG("%s: Database description received.\n", p->name);
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@ -1003,26 +1087,6 @@ ospf_iface_clasify(struct iface *ifa)
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return OSPF_IT_PTP;
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}
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void
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fill_ospf_pkt_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
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{
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struct ospf_packet *pkt;
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struct proto *p;
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p=(struct proto *)(ifa->proto);
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pkt=(struct ospf_packet *)buf;
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pkt->version=OSPF_VERSION;
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pkt->type=h_type;
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pkt->routerid=htonl(p->cf->global->router_id);
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pkt->areaid=htonl(ifa->area);
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pkt->autype=htons(ifa->autype);
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pkt->checksum=0;
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}
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void
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hello_timer_hook(timer *timer)
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{
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@ -1068,14 +1132,9 @@ hello_timer_hook(timer *timer)
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}
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length=sizeof(struct ospf_hello_packet)+i*sizeof(u32);
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op->length=htons(length);
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op->length=ntohs(length);
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/* FIXME Do authentification */
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/* Count checksum */
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op->checksum=ipsum_calculate(op,sizeof(struct ospf_packet)-8,
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&(pkt->netmask),length-sizeof(struct ospf_packet),NULL);
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ospf_pkt_finalize(ifa, op);
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/* And finally send it :-) */
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sk_send(ifa->hello_sk,length);
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@ -160,14 +160,14 @@ struct ospf_neighbor
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#define NEIGHBOR_LOADING 6
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#define NEIGHBOR_FULL 7
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timer *inactim; /* Inactivity timer */
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u8 imms; /* I, M, Master/slave */
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u8 imms; /* I, M, Master/slave received */
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u32 dds; /* DD Sequence number being sent */
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u32 ddr; /* last Dat Des packet received */
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u8 myimms; /* I, M MS received */
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u8 myoptions; /* Options received */
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u8 myimms; /* I, M Master/slave */
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u32 rid; /* Router ID */
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ip_addr ip; /* IP of it's interface */
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u8 priority; /* Priority */
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u8 options; /* Options */
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u8 options; /* Options received */
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u32 dr; /* Neigbour's idea of DR */
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u32 bdr; /* Neigbour's idea of BDR */
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u8 adj; /* built adjacency? */
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