/**
* ospf_send_dbdes - transmit database description packet
* @p: OSPF protocol instance
* @n: neighbor
*
* Sending of a database description packet is described in 10.8 of RFC 2328.
* Reception of each packet is acknowledged in the sequence number of another.
* When I send a packet to a neighbor I keep a copy in a buffer. If the neighbor
* does not reply, I don't create a new packet but just send the content
* of the buffer.
*/
void
ospf_send_dbdes(struct ospf_proto *p, struct ospf_neighbor *n)
{
/* RFC 2328 10.8 */
ASSERT((n->state == NEIGHBOR_EXSTART) || (n->state == NEIGHBOR_EXCHANGE));
if (n->ifa->oa->rt == NULL)
return;
ospf_prepare_dbdes(p, n);
ospf_do_send_dbdes(p, n);
}
void ospf_rxmt_dbdes(struct ospf_proto *p, struct ospf_neighbor *n)
{
ASSERT(n->state > NEIGHBOR_EXSTART);
if (!n->ldd_buffer) {
log(L_WARN "%s: No DBDES packet for retransmit", p->p.name);
ospf_neigh_sm(n, INM_SEQMIS);
return;
}
/* Send last packet */
ospf_do_send_dbdes(p, n);
}
