static void
ospf_dbdes_reqladd(struct ospf_dbdes_packet *ps, struct ospf_neighbor *n)
{
struct ospf_lsa_header *plsa, lsa;
struct top_hash_entry *he, *sn;
struct ospf_area *oa = n->ifa->oa;
struct top_graph *gr = oa->po->gr;
struct ospf_packet *op;
int i, j;
op = (struct ospf_packet *) ps;
plsa = (void *) (ps + 1);
j = (ntohs(op->length) - sizeof(struct ospf_dbdes_packet)) /
sizeof(struct ospf_lsa_header);
for (i = 0; i < j; i++)
{
ntohlsah(plsa + i, &lsa);
u32 dom = ospf_lsa_domain(lsa.type, n->ifa);
if (((he = ospf_hash_find_header(gr, dom, &lsa)) == NULL) ||
(lsa_comp(&lsa, &(he->lsa)) == 1))
{
/* Is this condition necessary? */
if (ospf_hash_find_header(n->lsrqh, dom, &lsa) == NULL)
{
sn = ospf_hash_get_header(n->lsrqh, dom, &lsa);
ntohlsah(plsa + i, &(sn->lsa));
s_add_tail(&(n->lsrql), SNODE sn);
}
}
}
}
void
ospf_lsack_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
struct ospf_neighbor *n)
{
struct proto *p = &ifa->oa->po->proto;
struct ospf_lsa_header lsa;
struct top_hash_entry *en;
unsigned int i, lsano;
unsigned int size = ntohs(ps_i->length);
if (size < sizeof(struct ospf_lsack_packet))
{
log(L_ERR "Bad OSPF LSACK packet from %I - too short (%u B)", n->ip, size);
return;
}
struct ospf_lsack_packet *ps = (void *) ps_i;
OSPF_PACKET(ospf_dump_lsack, ps, "LSACK packet received from %I via %s", n->ip, ifa->iface->name);
ospf_neigh_sm(n, INM_HELLOREC);
if (n->state < NEIGHBOR_EXCHANGE)
return;
lsano = (size - sizeof(struct ospf_lsack_packet)) /
sizeof(struct ospf_lsa_header);
for (i = 0; i < lsano; i++)
{
ntohlsah(ps->lsh + i, &lsa);
u32 dom = ospf_lsa_domain(lsa.type, n->ifa);
if ((en = ospf_hash_find_header(n->lsrth, dom, &lsa)) == NULL)
continue; /* pg 155 */
if (lsa_comp(&lsa, &en->lsa) != CMP_SAME) /* pg 156 */
{
if ((lsa.sn == LSA_MAXSEQNO) && (lsa.age == LSA_MAXAGE))
continue;
OSPF_TRACE(D_PACKETS, "Strange LSACK from %I", n->ip);
OSPF_TRACE(D_PACKETS, "Type: %04x, Id: %R, Rt: %R",
lsa.type, lsa.id, lsa.rt);
OSPF_TRACE(D_PACKETS, "I have: Age: %4u, Seq: %08x, Sum: %04x",
en->lsa.age, en->lsa.sn, en->lsa.checksum);
OSPF_TRACE(D_PACKETS, "He has: Age: %4u, Seq: %08x, Sum: %04x",
lsa.age, lsa.sn, lsa.checksum);
continue;
}
DBG("Deleting LS Id: %R RT: %R Type: %u from LS Retl for neighbor %R\n",
lsa.id, lsa.rt, lsa.type, n->rid);
s_rem_node(SNODE en);
if (en->lsa_body != NULL)
mb_free(en->lsa_body);
en->lsa_body = NULL;
ospf_hash_delete(n->lsrth, en);
}
}
