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Temporary OSPF commit.
This commit is contained in:
parent
0596b3dbf9
commit
6667d0c4a1
@ -268,7 +268,7 @@ ospf_dbdes_process(struct ospf_neighbor *n, struct ospf_packet *pkt, unsigned pl
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if (ospf_hash_is_new(req))
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s_add_tail(&(n->lsrql), SNODE req);
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en->lsa = lsa;
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en->lsa = lsa; // XXXX ??? should be req->lsa ?
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}
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}
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}
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@ -91,6 +91,7 @@ ospf_lsreq_send(struct ospf_neighbor *n)
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ospf_send_to(ifa, n->ip);
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}
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void
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ospf_lsreq_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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struct ospf_neighbor *n)
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@ -99,11 +100,6 @@ ospf_lsreq_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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struct ospf_lsreq_header *lsrs;
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unsigned i, lsr_count;
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struct ospf_lsreq_item *lsr_head, *lsr;
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struct ospf_lsreq_item **lsr_pos = &lsr_head;
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slab *upslab;
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/* No need to check length, lsreq has only basic header */
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OSPF_PACKET(ospf_lsreq_dump, pkt, "LSREQ packet received from %I via %s",
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@ -114,9 +110,10 @@ ospf_lsreq_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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ospf_neigh_sm(n, INM_HELLOREC); /* Not in RFC */
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upslab = sl_new(n->pool, sizeof(struct ospf_lsreq_item));
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ospf_lsreq_body(po, pkt, ntohs(pkt->length), &lsrs, &lsr_count);
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struct top_hash_entry *en, *entries[lsr_count];
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for (i = 0; i < lsr_count; i++)
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{
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u32 id, rt, type, dom;
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@ -127,26 +124,17 @@ ospf_lsreq_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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DBG("Processing requested LSA: Type: %04x, Id: %R, Rt: %R\n", type, id, rt);
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if (ospf_hash_find(po->gr, dom, id, rt, type) == NULL)
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en = ospf_hash_find(po->gr, dom, id, rt, type);
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if (!en)
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{
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log(L_WARN "Received bad LSREQ from %I: Type: %04x, Id: %R, Rt: %R",
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n->ip, type, id, rt);
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log(L_WARN "%s: Received LSREQ from %I for missing LSA (Type: %04x, Id: %R, Rt: %R)",
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po->proto.name, n->ip, type, id, rt);
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ospf_neigh_sm(n, INM_BADLSREQ);
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rfree(upslab);
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return;
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}
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lsr = sl_alloc(upslab);
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lsr->domain = dom;
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lsr->type = type;
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lsr->id = id;
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lsr->rt = rt;
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*lsr_pos = lsr;
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lsr_pos = &(lsr->next);
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entries[i] = en;
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}
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*lsr_pos = NULL;
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ospf_lsupd_send_list(n, lsr_head);
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rfree(upslab);
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ospf_lsupd_send(n, entries, lsr_count);
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}
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@ -47,9 +47,19 @@ ospf_lsupd_hdrlen(struct proto_ospf *po)
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return ospf_pkt_hdrlen(po) + 4; /* + u32 lsa count field */
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}
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static inline u32 *
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ospf_lsupd_lsa_count(struct ospf_packet *pkt, unsigned hdrlen)
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{ return ((void *) pkt) + hdrlen - 4; }
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static inline u32
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ospf_lsupd_get_lsa_count(struct ospf_packet *pkt, unsigned hdrlen)
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{
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u32 *c = ((void *) pkt) + hdrlen - 4;
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return ntohl(*c);
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}
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static inline void
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ospf_lsupd_set_lsa_count(struct ospf_packet *pkt, unsigned hdrlen, u32 val)
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{
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u32 *c = ((void *) pkt) + hdrlen - 4;
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*c = htonl(val);
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}
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static inline void
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ospf_lsupd_body(struct proto_ospf *po, struct ospf_packet *pkt,
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@ -58,7 +68,7 @@ ospf_lsupd_body(struct proto_ospf *po, struct ospf_packet *pkt,
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unsigned hlen = ospf_lsupd_hdrlen(po);
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*offset = hlen;
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*bound = ntohs(pkt->length) - sizeof(struct ospf_lsa_header);
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*lsa_count = ntohl(*ospf_lsupd_lsa_count(pkt, hlen));
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*lsa_count = ospf_lsupd_get_lsa_count(pkt, hlen);
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}
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static void ospf_lsupd_dump(struct proto_ospf *po, struct ospf_packet *pkt)
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@ -93,291 +103,19 @@ static void ospf_lsupd_dump(struct proto_ospf *po, struct ospf_packet *pkt)
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}
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}
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/**
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* ospf_lsupd_flood - send received or generated lsa to the neighbors
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* @po: OSPF protocol
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* @n: neighbor than sent this lsa (or NULL if generated)
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* @hn: LSA header followed by lsa body in network endianity (may be NULL)
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* @hh: LSA header in host endianity (must be filled)
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* @domain: domain of LSA (must be filled)
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* @rtl: add this LSA into retransmission list
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*
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*
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* return value - was the LSA flooded back?
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*/
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static void ospf_lsupd_flood_ifa(struct proto_ospf *po, struct ospf_iface *ifa, struct top_hash_entry *en);
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int
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ospf_lsupd_flood(struct proto_ospf *po,
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struct ospf_neighbor *n, struct ospf_lsa_header *hn,
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struct ospf_lsa_header *hh, u32 domain, int rtl)
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{
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struct ospf_iface *ifa;
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struct ospf_neighbor *nn;
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struct top_hash_entry *en;
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int ret, retval = 0;
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/* pg 148 */
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WALK_LIST(ifa, po->iface_list)
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{
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if (ifa->stub)
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continue;
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if (! ospf_lsa_flooding_allowed(hh, domain, ifa))
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continue;
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DBG("Wanted to flood LSA: Type: %u, ID: %R, RT: %R, SN: 0x%x, Age %u\n",
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hh->type, hh->id, hh->rt, hh->sn, hh->age);
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ret = 0;
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WALK_LIST(nn, ifa->neigh_list)
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{
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/* 13.3 (1a) */
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if (nn->state < NEIGHBOR_EXCHANGE)
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continue;
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/* 13.3 (1b) */
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if (nn->state < NEIGHBOR_FULL)
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{
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if ((en = ospf_hash_find_header(nn->lsrqh, domain, hh)) != NULL)
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{
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DBG("That LSA found in lsreq list for neigh %R\n", nn->rid);
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switch (lsa_comp(hh, &en->lsa))
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{
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case CMP_OLDER:
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continue;
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break;
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case CMP_SAME:
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s_rem_node(SNODE en);
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if (en->lsa_body != NULL)
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mb_free(en->lsa_body);
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en->lsa_body = NULL;
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DBG("Removing from lsreq list for neigh %R\n", nn->rid);
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ospf_hash_delete(nn->lsrqh, en);
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if (EMPTY_SLIST(nn->lsrql))
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ospf_neigh_sm(nn, INM_LOADDONE);
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continue;
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break;
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case CMP_NEWER:
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s_rem_node(SNODE en);
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if (en->lsa_body != NULL)
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mb_free(en->lsa_body);
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en->lsa_body = NULL;
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DBG("Removing from lsreq list for neigh %R\n", nn->rid);
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ospf_hash_delete(nn->lsrqh, en);
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if (EMPTY_SLIST(nn->lsrql))
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ospf_neigh_sm(nn, INM_LOADDONE);
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break;
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default:
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bug("Bug in lsa_comp?");
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}
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}
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}
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/* 13.3 (1c) */
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if (nn == n)
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continue;
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/* 13.3 (1d) */
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if (rtl)
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{
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/* In OSPFv3, there should be check whether receiving router understand
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that type of LSA (for LSA types with U-bit == 0). But as we does not support
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any optional LSA types, this is not needed yet */
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if ((en = ospf_hash_find_header(nn->lsrth, domain, hh)) == NULL)
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{
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en = ospf_hash_get_header(nn->lsrth, domain, hh);
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}
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else
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{
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s_rem_node(SNODE en);
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}
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s_add_tail(&nn->lsrtl, SNODE en);
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memcpy(&en->lsa, hh, sizeof(struct ospf_lsa_header));
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DBG("Adding that LSA for flood to %I\n", nn->ip);
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}
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else
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{
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if ((en = ospf_hash_find_header(nn->lsrth, domain, hh)) != NULL)
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{
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s_rem_node(SNODE en);
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ospf_hash_delete(nn->lsrth, en);
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}
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}
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ret = 1;
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}
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if (ret == 0)
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continue; /* pg 150 (2) */
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if (n && (n->ifa == ifa))
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{
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if ((n->rid == ifa->drid) || n->rid == ifa->bdrid)
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continue; /* pg 150 (3) */
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if (ifa->state == OSPF_IS_BACKUP)
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continue; /* pg 150 (4) */
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retval = 1;
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}
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{
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u16 len, age;
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unsigned hlen;
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struct ospf_packet *pkt;
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struct ospf_lsa_header *lh;
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pkt = ospf_tx_buffer(ifa);
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hlen = ospf_lsupd_hdrlen(po);
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ospf_pkt_fill_hdr(ifa, pkt, LSUPD_P);
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*ospf_lsupd_lsa_count(pkt, hlen) = htonl(1);
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lh = (((void *) pkt) + hlen);
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/* Copy LSA into the packet */
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if (hn)
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{
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memcpy(lh, hn, ntohs(hn->length));
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}
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else
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{
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u8 *help;
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struct top_hash_entry *en;
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lsa_hton_hdr(hh, lh);
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help = (u8 *) (lh + 1);
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en = ospf_hash_find_header(po->gr, domain, hh);
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lsa_hton_body(en->lsa_body, help, hh->length - sizeof(struct ospf_lsa_header));
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}
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age = ntohs(lh->age);
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age += ifa->inftransdelay;
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if (age > LSA_MAXAGE)
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age = LSA_MAXAGE;
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lh->age = htons(age);
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len = hlen + ntohs(lh->length);
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pkt->length = htons(len);
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OSPF_PACKET(ospf_lsupd_dump, pkt, "LSUPD packet flooded via %s", ifa->iface->name);
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switch (ifa->type)
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{
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case OSPF_IT_BCAST:
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if ((ifa->state == OSPF_IS_BACKUP) || (ifa->state == OSPF_IS_DR))
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ospf_send_to_all(ifa);
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else
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ospf_send_to_des(ifa);
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break;
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case OSPF_IT_NBMA:
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if ((ifa->state == OSPF_IS_BACKUP) || (ifa->state == OSPF_IS_DR))
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ospf_send_to_agt(ifa, NEIGHBOR_EXCHANGE);
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else
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ospf_send_to_bdr(ifa);
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break;
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case OSPF_IT_PTP:
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ospf_send_to_all(ifa);
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break;
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case OSPF_IT_PTMP:
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ospf_send_to_agt(ifa, NEIGHBOR_EXCHANGE);
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break;
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case OSPF_IT_VLINK:
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ospf_send_to(ifa, ifa->vip);
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break;
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default:
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bug("Bug in ospf_lsupd_flood()");
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}
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}
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}
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return retval;
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}
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void /* I send all I received in LSREQ */
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ospf_lsupd_send_list(struct ospf_neighbor *n, struct ospf_lsreq_item *lsr)
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{
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struct ospf_area *oa = n->ifa->oa;
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struct proto_ospf *po = oa->po;
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struct top_hash_entry *en;
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struct ospf_packet *pkt;
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unsigned hlen, pos, pos2, maxsize, lsano;
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pkt = ospf_tx_buffer(n->ifa);
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hlen = ospf_lsupd_hdrlen(po);
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maxsize = ospf_pkt_maxsize(n->ifa);
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while (lsr)
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{
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/* Prepare the packet */
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ospf_pkt_fill_hdr(n->ifa, pkt, LSUPD_P);
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pos = hlen;
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lsano = 0;
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/* Fill the packet with LSAs */
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while (lsr)
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{
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en = ospf_hash_find(oa->po->gr, lsr->domain, lsr->id, lsr->rt, lsr->type);
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if (!en)
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{
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/* Probably flushed LSA, this should not happen */
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log(L_WARN "OSPF: LSA disappeared (Type: %04x, Id: %R, Rt: %R)",
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lsr->type, lsr->id, lsr->rt);
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lsr = lsr->next;
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continue;
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}
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pos2 = pos + en->lsa.length;
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if (pos2 > maxsize)
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{
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/* The packet if full, stop adding LSAs and sent it */
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if (lsano > 0)
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break;
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/* LSA is larger than MTU, check buffer size */
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if (pos2 > ospf_pkt_bufsize(n->ifa))
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{
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/* Cannot fit in a tx buffer, skip that */
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log(L_WARN "OSPF: LSA too large to send (Type: %04x, Id: %R, Rt: %R)",
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lsr->type, lsr->id, lsr->rt);
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lsr = lsr->next;
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continue;
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}
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}
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/* Copy the LSA to the packet */
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void *lsabuf = ((void *) pkt) + pos;
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lsa_hton_hdr(&(en->lsa), (struct ospf_lsa_header *) lsabuf);
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lsa_hton_body(en->lsa_body, lsabuf + sizeof(struct ospf_lsa_header),
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en->lsa.length - sizeof(struct ospf_lsa_header));
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pos = pos2;
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lsano++;
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lsr = lsr->next;
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}
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if (lsano == 0)
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break;
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/* Send the packet */
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pkt->length = htons(pos);
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*ospf_lsupd_lsa_count(pkt, hlen) = htonl(lsano);
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OSPF_PACKET(ospf_lsupd_dump, pkt, "LSUPD packet sent to %I via %s",
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n->ip, n->ifa->iface->name);
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ospf_send_to(n->ifa, n->ip);
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}
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}
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void
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ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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struct ospf_neighbor *n)
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{
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struct ospf_neighbor *ntmp;
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struct proto_ospf *po = ifa->oa->po;
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struct proto *p = &po->proto;
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struct ospf_neighbor *ntmp;
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unsigned sendreq = 1;
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unsigned plen = ntohs(pkt->length);
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@ -402,8 +140,9 @@ ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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for (i = 0; i < lsa_count; i++)
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{
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struct ospf_lsa_header lsatmp;
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struct top_hash_entry *lsadb;
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struct ospf_lsa_header lsa, *lsa_n;
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struct top_hash_entry *en, *ret;
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u32 lsa_len, lsa_type, lsa_domain;
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if (offset > bound)
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{
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@ -412,78 +151,79 @@ ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
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return;
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}
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struct ospf_lsa_header *lsa = ((void *) pkt) + offset;
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unsigned int lsalen = ntohs(lsa->length);
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offset += lsalen;
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/* LSA header in network order */
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lsa_n = ((void *) pkt) + offset;
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lsa_len = ntohs(lsa_n->length);
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offset += lsa_len;
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if ((offset > plen) || ((lsalen % 4) != 0) ||
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(lsalen <= sizeof(struct ospf_lsa_header)))
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if ((offset > plen) || ((lsa_len % 4) != 0) ||
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(lsa_len <= sizeof(struct ospf_lsa_header)))
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{
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log(L_WARN "OSPF: Received LSA from %I with bad length", n->ip);
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log(L_WARN "%s: Received LSA from %I with bad length", p->name, n->ip);
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ospf_neigh_sm(n, INM_BADLSREQ);
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break;
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}
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|
||||
/* pg 143 (1) */
|
||||
u16 chsum = lsa->checksum;
|
||||
if (chsum != lsasum_check(lsa, NULL))
|
||||
/* RFC 2328 13. (1) - validate LSA checksum */
|
||||
u16 chsum = lsa_n->checksum;
|
||||
if (chsum != lsasum_check(lsa_n, NULL))
|
||||
{
|
||||
log(L_WARN "OSPF: Received LSA from %I with bad checskum: %x %x",
|
||||
n->ip, chsum, lsa->checksum);
|
||||
log(L_WARN "%s: Received LSA from %I with bad checskum: %x %x",
|
||||
p->name, n->ip, chsum, lsa_n->checksum);
|
||||
continue;
|
||||
}
|
||||
|
||||
u32 lsa_type, lsa_domain;
|
||||
lsa_ntoh_hdr(lsa, &lsatmp);
|
||||
lsa_xxxxtype(lsatmp.type_raw, ifa, &lsa_type, &lsa_domain);
|
||||
|
||||
/* pg 143 (2) */
|
||||
if (!lsa_type)
|
||||
{
|
||||
log(L_WARN "OSPF: Received unknown LSA type from %I", n->ip);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* 4.5.1 (2) */
|
||||
if ((LSA_SCOPE(lsa_type) == LSA_SCOPE_AS) && !oa_is_ext(ifa->oa))
|
||||
{
|
||||
log(L_WARN "OSPF: Received LSA with AS scope in stub area from %I", n->ip);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* 4.5.1 (3) */
|
||||
if (LSA_SCOPE(lsa_type) == LSA_SCOPE_RES)
|
||||
{
|
||||
log(L_WARN "OSPF: Received LSA with invalid scope from %I", n->ip);
|
||||
continue;
|
||||
}
|
||||
/* LSA header in host order */
|
||||
lsa_ntoh_hdr(lsa_n, &lsa);
|
||||
lsa_xxxxtype(lsa.type_raw, ifa, &lsa_type, &lsa_domain);
|
||||
|
||||
DBG("Update Type: %04x, Id: %R, Rt: %R, Sn: 0x%08x, Age: %u, Sum: %u\n",
|
||||
lsa_type, lsatmp.id, lsatmp.rt, lsatmp.sn, lsatmp.age, lsatmp.checksum);
|
||||
lsa_type, lsa.id, lsa.rt, lsa.sn, lsa.age, lsa.checksum);
|
||||
|
||||
lsadb = ospf_hash_find(po->gr, lsa_domain, lsatmp.id, lsatmp.rt, lsa_type);
|
||||
|
||||
#ifdef LOCAL_DEBUG
|
||||
if (lsadb)
|
||||
DBG("I have Type: %04x, Id: %R, Rt: %R, Sn: 0x%08x, Age: %u, Sum: %u\n",
|
||||
lsadb->lsa_type, lsadb->lsa.id, lsadb->lsa.rt,
|
||||
lsadb->lsa.sn, lsadb->lsa.age, lsadb->lsa.checksum);
|
||||
#endif
|
||||
|
||||
/* pg 143 (4) */
|
||||
if ((lsatmp.age == LSA_MAXAGE) && (lsadb == NULL) && can_flush_lsa(po))
|
||||
/* RFC 2328 13. (2) */
|
||||
if (!lsa_type)
|
||||
{
|
||||
ospf_lsack_enqueue(n, lsa, ACKL_DIRECT);
|
||||
log(L_WARN "%s: Received unknown LSA type from %I", p->name, n->ip);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* pg 144 (5) */
|
||||
if ((lsadb == NULL) || (lsa_comp(&lsatmp, &lsadb->lsa) == CMP_NEWER))
|
||||
/* RFC 5340 4.5.1 (2) and RFC 2328 13. (3) */
|
||||
if ((LSA_SCOPE(lsa_type) == LSA_SCOPE_AS) && !oa_is_ext(ifa->oa))
|
||||
{
|
||||
log(L_WARN "%s: Received LSA with AS scope in stub area from %I", p->name, n->ip);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* RFC 5340 4.5.1 (3) */
|
||||
if (LSA_SCOPE(lsa_type) == LSA_SCOPE_RES)
|
||||
{
|
||||
log(L_WARN "%s: Received LSA with invalid scope from %I", p->name, n->ip);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Find local copy of LSA in link state database */
|
||||
en = ospf_hash_find(po->gr, lsa_domain, lsa.id, lsa.rt, lsa_type);
|
||||
|
||||
#ifdef LOCAL_DEBUG
|
||||
if (en)
|
||||
DBG("I have Type: %04x, Id: %R, Rt: %R, Sn: 0x%08x, Age: %u, Sum: %u\n",
|
||||
en->lsa_type, en->lsa.id, en->lsa.rt, en->lsa.sn, en->lsa.age, en->lsa.checksum);
|
||||
#endif
|
||||
|
||||
/* 13. (4) - ignore maxage LSA if i have no local copy */
|
||||
if ((lsa.age == LSA_MAXAGE) && !en && can_flush_lsa(po))
|
||||
{
|
||||
ospf_lsack_enqueue(n, lsa_n, ACKL_DIRECT);
|
||||
continue;
|
||||
}
|
||||
|
||||
int cmp = : CMP_NEWER;
|
||||
|
||||
/* 13. (5) - received LSA is newer (or no local copy) */
|
||||
if (!en || (lsa_comp(&lsa, &en->lsa) == CMP_NEWER))
|
||||
{
|
||||
struct ospf_iface *ift = NULL;
|
||||
int self = (lsatmp.rt == po->router_id);
|
||||
|
||||
DBG("PG143(5): Received LSA is newer\n");
|
||||
int self = (lsa.rt == po->router_id);
|
||||
|
||||
#ifdef OSPFv2
|
||||
/* 13.4 - check self-originated LSAs of NET type */
|
||||
@ -494,7 +234,7 @@ ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
|
||||
{
|
||||
if (!nifa->iface)
|
||||
continue;
|
||||
if (ipa_equal(nifa->addr->ip, ipa_from_u32(lsatmp.id)))
|
||||
if (ipa_equal(nifa->addr->ip, ipa_from_u32(lsa.id)))
|
||||
{
|
||||
self = 1;
|
||||
break;
|
||||
@ -506,102 +246,101 @@ ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
|
||||
/* pg 145 (5f) - premature aging of self originated lsa */
|
||||
if (self)
|
||||
{
|
||||
if ((lsatmp.age == LSA_MAXAGE) && (lsatmp.sn == LSA_MAXSEQNO))
|
||||
if ((lsa.age == LSA_MAXAGE) && (lsa.sn == LSA_MAXSEQNO))
|
||||
{
|
||||
ospf_lsack_enqueue(n, lsa, ACKL_DIRECT);
|
||||
ospf_lsack_enqueue(n, lsa_n, ACKL_DIRECT);
|
||||
continue;
|
||||
}
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Received old self-originated LSA (Type: %04x, Id: %R, Rt: %R)",
|
||||
lsa_type, lsatmp.id, lsatmp.rt);
|
||||
lsa_type, lsa.id, lsa.rt);
|
||||
|
||||
if (lsadb)
|
||||
if (en)
|
||||
{
|
||||
OSPF_TRACE(D_EVENTS, "Reflooding new self-originated LSA with newer sequence number");
|
||||
lsadb->lsa.sn = lsatmp.sn + 1;
|
||||
lsadb->lsa.age = 0;
|
||||
lsadb->inst_t = now;
|
||||
lsadb->ini_age = 0;
|
||||
lsasum_calculate(&lsadb->lsa, lsadb->lsa_body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsadb->lsa, lsa_domain, 1);
|
||||
en->lsa.sn = lsa.sn + 1;
|
||||
en->lsa.age = 0;
|
||||
en->inst_t = now;
|
||||
en->ini_age = 0;
|
||||
lsasum_calculate(&en->lsa, en->lsa_body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &en->lsa, lsa_domain, 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
OSPF_TRACE(D_EVENTS, "Premature aging it");
|
||||
lsatmp.age = LSA_MAXAGE;
|
||||
lsatmp.sn = LSA_MAXSEQNO;
|
||||
lsa->age = htons(LSA_MAXAGE);
|
||||
lsa->sn = htonl(LSA_MAXSEQNO);
|
||||
lsasum_check(lsa, (lsa + 1)); /* It also calculates chsum! */
|
||||
lsatmp.checksum = ntohs(lsa->checksum);
|
||||
ospf_lsupd_flood(po, NULL, lsa, &lsatmp, lsa_domain, 0);
|
||||
lsa.age = LSA_MAXAGE;
|
||||
lsa.sn = LSA_MAXSEQNO;
|
||||
lsa_n->age = htons(LSA_MAXAGE);
|
||||
lsa_n->sn = htonl(LSA_MAXSEQNO);
|
||||
lsasum_check(lsa_n, (lsa_n + 1)); /* It also calculates chsum! */
|
||||
lsa.checksum = ntohs(lsa_n->checksum);
|
||||
ospf_lsupd_flood(po, NULL, lsa_n, &lsa, lsa_domain, 0);
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
/* pg 144 (5a) */
|
||||
if (lsadb && ((now - lsadb->inst_t) <= MINLSARRIVAL)) /* FIXME: test for flooding? */
|
||||
if (en && ((now - en->inst_t) <= MINLSARRIVAL)) /* FIXME: test for flooding? */
|
||||
{
|
||||
OSPF_TRACE(D_EVENTS, "Skipping LSA received in less that MINLSARRIVAL");
|
||||
sendreq = 0;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Remove old from all ret lists */
|
||||
/* pg 144 (5c) */
|
||||
/* 13. (5c) - remove old LSA from all retransmission lists */
|
||||
/* Must be done before (5b), otherwise it also removes the new entries from (5b) */
|
||||
if (lsadb)
|
||||
if (en)
|
||||
WALK_LIST(ift, po->iface_list)
|
||||
WALK_LIST(ntmp, ift->neigh_list)
|
||||
{
|
||||
struct top_hash_entry *en;
|
||||
struct top_hash_entry *ret;
|
||||
if (ntmp->state > NEIGHBOR_EXSTART)
|
||||
if ((en = ospf_hash_find_header(ntmp->lsrth, lsa_domain, &lsadb->lsa)) != NULL)
|
||||
if ((ret = ospf_hash_find_header(ntmp->lsrth, lsa_domain, &en->lsa)) != NULL)
|
||||
{
|
||||
s_rem_node(SNODE en);
|
||||
ospf_hash_delete(ntmp->lsrth, en);
|
||||
s_rem_node(SNODE ret);
|
||||
ospf_hash_delete(ntmp->lsrth, ret);
|
||||
}
|
||||
}
|
||||
|
||||
/* pg 144 (5b) */
|
||||
if (ospf_lsupd_flood(po, n, lsa, &lsatmp, lsa_domain, 1) == 0)
|
||||
if (ospf_lsupd_flood(po, n, lsa_n, &lsa, lsa_domain, 1) == 0)
|
||||
{
|
||||
DBG("Wasn't flooded back\n"); /* ps 144(5e), pg 153 */
|
||||
if (ifa->state == OSPF_IS_BACKUP)
|
||||
{
|
||||
if (ifa->drid == n->rid)
|
||||
ospf_lsack_enqueue(n, lsa, ACKL_DELAY);
|
||||
ospf_lsack_enqueue(n, lsa_n, ACKL_DELAY);
|
||||
}
|
||||
else
|
||||
ospf_lsack_enqueue(n, lsa, ACKL_DELAY);
|
||||
ospf_lsack_enqueue(n, lsa_n, ACKL_DELAY);
|
||||
}
|
||||
|
||||
if ((lsatmp.age == LSA_MAXAGE) && (lsatmp.sn == LSA_MAXSEQNO)
|
||||
&& lsadb && can_flush_lsa(po))
|
||||
if ((lsa.age == LSA_MAXAGE) && (lsa.sn == LSA_MAXSEQNO)
|
||||
&& en && can_flush_lsa(po))
|
||||
{
|
||||
flush_lsa(lsadb, po);
|
||||
flush_lsa(en, po);
|
||||
schedule_rtcalc(po);
|
||||
continue;
|
||||
} /* FIXME lsack? */
|
||||
|
||||
/* pg 144 (5d) */
|
||||
void *body = mb_alloc(p->pool, lsatmp.length - sizeof(struct ospf_lsa_header));
|
||||
lsa_ntoh_body(lsa + 1, body, lsatmp.length - sizeof(struct ospf_lsa_header));
|
||||
void *body = mb_alloc(p->pool, lsa.length - sizeof(struct ospf_lsa_header));
|
||||
lsa_ntoh_body(lsa_n + 1, body, lsa.length - sizeof(struct ospf_lsa_header));
|
||||
|
||||
/* We will do validation check after flooding and
|
||||
acknowledging given LSA to minimize problems
|
||||
when communicating with non-validating peer */
|
||||
if (lsa_validate(&lsatmp, lsa_type, ospf_is_v2(po), body) == 0)
|
||||
if (lsa_validate(&lsa, lsa_type, ospf_is_v2(po), body) == 0)
|
||||
{
|
||||
log(L_WARN "Received invalid LSA from %I", n->ip);
|
||||
mb_free(body);
|
||||
continue;
|
||||
}
|
||||
|
||||
lsadb = lsa_install_new(po, &lsatmp, lsa_domain, body);
|
||||
en = lsa_install_new(po, &lsa, lsa_domain, body);
|
||||
DBG("New LSA installed in DB\n");
|
||||
|
||||
/* Events 6,7 from RFC5340 4.4.3. */
|
||||
/* Events 6,7 from RFC 5340 4.4.3. */
|
||||
if ((lsa_type == LSA_T_LINK) && (ifa->state == OSPF_IS_DR))
|
||||
schedule_net_lsa(ifa);
|
||||
|
||||
@ -610,45 +349,41 @@ ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
|
||||
|
||||
/* FIXME pg145 (6) */
|
||||
|
||||
/* pg145 (7) */
|
||||
if (lsa_comp(&lsatmp, &lsadb->lsa) == CMP_SAME)
|
||||
/* 13. (7) - received LSA is same */
|
||||
if (lsa_comp(&lsa, &en->lsa) == CMP_SAME)
|
||||
{
|
||||
struct top_hash_entry *en;
|
||||
DBG("PG145(7) Got the same LSA\n");
|
||||
if ((en = ospf_hash_find_header(n->lsrth, lsadb->domain, &lsadb->lsa)) != NULL)
|
||||
ret = ospf_hash_find_entry(n->lsrth, en);
|
||||
if (ret)
|
||||
{
|
||||
/* pg145 (7a) */
|
||||
s_rem_node(SNODE en);
|
||||
ospf_hash_delete(n->lsrth, en);
|
||||
s_rem_node(SNODE ret);
|
||||
ospf_hash_delete(n->lsrth, ret);
|
||||
|
||||
if (ifa->state == OSPF_IS_BACKUP)
|
||||
{
|
||||
if (n->rid == ifa->drid)
|
||||
ospf_lsack_enqueue(n, lsa, ACKL_DELAY);
|
||||
ospf_lsack_enqueue(n, lsa_n, ACKL_DELAY);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* pg145 (7b) */
|
||||
ospf_lsack_enqueue(n, lsa, ACKL_DIRECT);
|
||||
ospf_lsack_enqueue(n, lsa_n, ACKL_DIRECT);
|
||||
}
|
||||
sendreq = 0;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* pg145 (8) */
|
||||
if ((lsadb->lsa.age == LSA_MAXAGE) && (lsadb->lsa.sn == LSA_MAXSEQNO))
|
||||
/* 13. (8) - received LSA is older */
|
||||
{
|
||||
continue;
|
||||
}
|
||||
/* Seqnum is wrapping, wait until it is flushed */
|
||||
if ((en->lsa.age == LSA_MAXAGE) && (en->lsa.sn == LSA_MAXSEQNO))
|
||||
continue;
|
||||
|
||||
struct ospf_lsreq_item lsr = {
|
||||
.domain = lsadb->domain,
|
||||
.type = lsadb->lsa_type,
|
||||
.id = lsadb->lsa.id,
|
||||
.rt = lsadb->lsa.rt
|
||||
};
|
||||
ospf_lsupd_send_list(n, &lsr);
|
||||
/* Send newer local copy back to neighbor */
|
||||
/* FIXME - check for MinLSArrival ? */
|
||||
ospf_lsupd_send(n, &en, 1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Send direct LSAs */
|
||||
@ -660,15 +395,251 @@ ospf_lsupd_receive(struct ospf_packet *pkt, struct ospf_iface *ifa,
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
ospf_lsupd_flush_nlsa(struct proto_ospf *po, struct top_hash_entry *en)
|
||||
{
|
||||
struct ospf_lsa_header *lsa = &en->lsa;
|
||||
|
||||
lsa->age = LSA_MAXAGE;
|
||||
lsa->sn = LSA_MAXSEQNO;
|
||||
lsasum_calculate(lsa, en->lsa_body);
|
||||
OSPF_TRACE(D_EVENTS, "Premature aging self originated lsa!");
|
||||
OSPF_TRACE(D_EVENTS, "Type: %04x, Id: %R, Rt: %R", en->lsa_type, lsa->id, lsa->rt);
|
||||
ospf_lsupd_flood(po, NULL, NULL, lsa, en->domain, 0);
|
||||
/**
|
||||
* ospf_lsupd_flood - send received or generated LSA to the neighbors
|
||||
* @po: OSPF protocol
|
||||
* @en: LSA entry
|
||||
* @from: neighbor than sent this LSA (or NULL if LSI is local)
|
||||
*
|
||||
* return value - was the LSA flooded back?
|
||||
*/
|
||||
|
||||
int
|
||||
ospf_lsupd_flood(struct proto_ospf *po, struct top_hash_entry *en, struct ospf_neighbor *from)
|
||||
{
|
||||
struct ospf_iface *ifa;
|
||||
struct ospf_neighbor *n;
|
||||
|
||||
int back = 0;
|
||||
WALK_LIST(ifa, po->iface_list)
|
||||
{
|
||||
if (ifa->stub)
|
||||
continue;
|
||||
|
||||
if (! lsa_flooding_allowed(en->lsa_type, en->domain, ifa))
|
||||
continue;
|
||||
|
||||
DBG("Wanted to flood LSA: Type: %u, ID: %R, RT: %R, SN: 0x%x, Age %u\n",
|
||||
hh->type, hh->id, hh->rt, hh->sn, hh->age);
|
||||
|
||||
int used = 0;
|
||||
WALK_LIST(n, ifa->neigh_list)
|
||||
{
|
||||
/* 13.3 (1a) */
|
||||
if (n->state < NEIGHBOR_EXCHANGE)
|
||||
continue;
|
||||
|
||||
/* 13.3 (1b) */
|
||||
if (n->state < NEIGHBOR_FULL)
|
||||
{
|
||||
struct top_hash_entry *req = ospf_hash_find_entry(n->lsrqh, en);
|
||||
if (req != NULL)
|
||||
{
|
||||
int cmp = lsa_comp(&en->lsa, &req->lsa);
|
||||
|
||||
/* If same or newer, remove LSA from the link state request list */
|
||||
if (cmp > CMP_OLDER)
|
||||
{
|
||||
s_rem_node(SNODE req);
|
||||
ospf_hash_delete(n->lsrqh, req);
|
||||
if (EMPTY_SLIST(n->lsrql))
|
||||
ospf_neigh_sm(n, INM_LOADDONE);
|
||||
}
|
||||
|
||||
/* If older or same, skip processing of this LSA */
|
||||
if (cmp < CMP_NEWER)
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
/* 13.3 (1c) */
|
||||
if (n == from)
|
||||
continue;
|
||||
|
||||
/* In OSPFv3, there should be check whether receiving router understand
|
||||
that type of LSA (for LSA types with U-bit == 0). But as we do not support
|
||||
any optional LSA types, this is not needed yet */
|
||||
|
||||
/* 13.3 (1d) - add LSA to the link state retransmission list */
|
||||
{
|
||||
struct top_hash_entry *ret = ospf_hash_get_entry(n->lsrth, en);
|
||||
if (! ospf_hash_is_new(ret))
|
||||
s_rem_node(SNODE ret);
|
||||
|
||||
s_add_tail(&n->lsrtl, SNODE ret);
|
||||
memcpy(&ret->lsa, hh, sizeof(struct ospf_lsa_header));
|
||||
}
|
||||
|
||||
used = 1;
|
||||
}
|
||||
|
||||
/* 13.3 (2) */
|
||||
if (!used)
|
||||
continue;
|
||||
|
||||
if (from && (from->ifa == ifa))
|
||||
{
|
||||
/* 13.3 (3) */
|
||||
if ((from->rid == ifa->drid) || from->rid == ifa->bdrid)
|
||||
continue;
|
||||
|
||||
/* 13.3 (4) */
|
||||
if (ifa->state == OSPF_IS_BACKUP)
|
||||
continue;
|
||||
|
||||
back = 1;
|
||||
}
|
||||
|
||||
/* 13.3 (5) - finally flood the packet */
|
||||
ospf_lsupd_flood_ifa(po, ifa, en);
|
||||
}
|
||||
|
||||
return back;
|
||||
}
|
||||
|
||||
static int
|
||||
ospf_lsupd_prepare(struct proto_ospf *po, struct ospf_iface *ifa,
|
||||
struct top_hash_entry **lsa_list, unsigned lsa_count)
|
||||
{
|
||||
struct ospf_packet *pkt;
|
||||
unsigned hlen, pos, i, maxsize;
|
||||
|
||||
pkt = ospf_tx_buffer(ifa);
|
||||
hlen = ospf_lsupd_hdrlen(po);
|
||||
maxsize = ospf_pkt_maxsize(ifa);
|
||||
|
||||
ospf_pkt_fill_hdr(ifa, pkt, LSUPD_P);
|
||||
pos = hlen;
|
||||
|
||||
for (i = 0; i < lsa_count; i++)
|
||||
{
|
||||
struct top_hash_entry *en = lsa_list[i];
|
||||
unsigned len = en->lsa.length;
|
||||
|
||||
if ((pos + len) > maxsize)
|
||||
{
|
||||
/* The packet if full, stop adding LSAs and sent it */
|
||||
if (i > 0)
|
||||
break;
|
||||
|
||||
/* LSA is larger than MTU, check buffer size */
|
||||
if ((pos + len) > ospf_pkt_bufsize(ifa))
|
||||
{
|
||||
/* Cannot fit in a tx buffer, skip that */
|
||||
log(L_WARN "OSPF: LSA too large to send (Type: %04x, Id: %R, Rt: %R)",
|
||||
en->lsa_type, en->lsa.id, en->lsa.rt);
|
||||
XXXX();
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
struct ospf_lsa_header *buf = ((void *) pkt) + pos;
|
||||
lsa_hton_hdr(&en->lsa, buf);
|
||||
lsa_hton_body(en->lsa_body, ((void *) buf) + sizeof(struct ospf_lsa_header),
|
||||
len - sizeof(struct ospf_lsa_header));
|
||||
buf->age = htons(MIN(en->lsa.age + ifa->inftransdelay, LSA_MAXAGE));
|
||||
|
||||
pos += len;
|
||||
}
|
||||
|
||||
ospf_lsupd_set_lsa_count(pkt, hlen, i);
|
||||
pkt->length = htons(pos);
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
ospf_lsupd_flood_ifa(struct proto_ospf *po, struct ospf_iface *ifa, struct top_hash_entry *en)
|
||||
{
|
||||
ospf_lsupd_prepare(po, ifa, &en, 1);
|
||||
|
||||
OSPF_PACKET(ospf_lsupd_dump, ospf_tx_buffer(ifa),
|
||||
"LSUPD packet flooded via %s", ifa->iface->name);
|
||||
|
||||
switch (ifa->type)
|
||||
{
|
||||
case OSPF_IT_BCAST:
|
||||
if ((ifa->state == OSPF_IS_BACKUP) || (ifa->state == OSPF_IS_DR))
|
||||
ospf_send_to_all(ifa);
|
||||
else
|
||||
ospf_send_to_des(ifa);
|
||||
break;
|
||||
|
||||
case OSPF_IT_NBMA:
|
||||
if ((ifa->state == OSPF_IS_BACKUP) || (ifa->state == OSPF_IS_DR))
|
||||
ospf_send_to_agt(ifa, NEIGHBOR_EXCHANGE);
|
||||
else
|
||||
ospf_send_to_bdr(ifa);
|
||||
break;
|
||||
|
||||
case OSPF_IT_PTP:
|
||||
ospf_send_to_all(ifa);
|
||||
break;
|
||||
|
||||
case OSPF_IT_PTMP:
|
||||
ospf_send_to_agt(ifa, NEIGHBOR_EXCHANGE);
|
||||
break;
|
||||
|
||||
case OSPF_IT_VLINK:
|
||||
ospf_send_to(ifa, ifa->vip);
|
||||
break;
|
||||
|
||||
default:
|
||||
bug("Bug in ospf_lsupd_flood()");
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
ospf_lsupd_send(struct ospf_neighbor *n, struct top_hash_entry **lsa_list, unsigned lsa_count)
|
||||
{
|
||||
struct ospf_iface *ifa = n->ifa;
|
||||
struct proto_ospf *po = ifa->oa->po;
|
||||
unsigned i, c;
|
||||
|
||||
for (i = 0; i < lsa_count; i += c)
|
||||
{
|
||||
c = ospf_lsupd_prepare(po, ifa, lsa_list + i, lsa_count - i);
|
||||
|
||||
OSPF_PACKET(ospf_lsupd_dump, ospf_tx_buffer(ifa),
|
||||
"LSUPD packet sent to %I via %s", n->ip, ifa->iface->name);
|
||||
|
||||
ospf_send_to(ifa, n->ip);
|
||||
}
|
||||
|
||||
return lsa_count;
|
||||
}
|
||||
|
||||
void
|
||||
ospf_lsupd_rxmt(struct ospf_neighbor *n)
|
||||
{
|
||||
struct proto_ospf *po = n->ifa->oa->po;
|
||||
|
||||
const unsigned max = 128;
|
||||
struct top_hash_entry *entries[max];
|
||||
struct top_hash_entry *ret, *en;
|
||||
unsigned i = 0;
|
||||
|
||||
WALK_SLIST(ret, n->lsrtl)
|
||||
{
|
||||
en = ospf_hash_find_entry(po->gr, ret);
|
||||
if (!en)
|
||||
{
|
||||
/* Probably flushed LSA, this should not happen */
|
||||
log(L_WARN "%s: LSA disappeared (Type: %04x, Id: %R, Rt: %R)",
|
||||
po->proto.name, ret->lsa_type, ret->lsa.id, ret->lsa.rt);
|
||||
|
||||
XXXX(); /* remove entry */
|
||||
continue;
|
||||
}
|
||||
|
||||
entries[i] = en;
|
||||
i++;
|
||||
|
||||
if (i == max)
|
||||
break;
|
||||
}
|
||||
|
||||
ospf_lsupd_send(n, entries, i);
|
||||
}
|
||||
|
@ -12,14 +12,9 @@
|
||||
|
||||
void ospf_dump_lsahdr(struct proto_ospf *po, struct ospf_lsa_header *lsa_n);
|
||||
void ospf_dump_common(struct proto_ospf *po, struct ospf_packet *pkt);
|
||||
void ospf_lsupd_send_list(struct ospf_neighbor *n, struct ospf_lsreq_item *lsr);
|
||||
void ospf_lsupd_receive(struct ospf_packet *ps_i,
|
||||
struct ospf_iface *ifa, struct ospf_neighbor *n);
|
||||
int ospf_lsupd_flood(struct proto_ospf *po,
|
||||
struct ospf_neighbor *n, struct ospf_lsa_header *hn,
|
||||
struct ospf_lsa_header *hh, u32 domain, int rtl);
|
||||
void ospf_lsupd_flush_nlsa(struct proto_ospf *po, struct top_hash_entry *en);
|
||||
int ospf_lsa_flooding_allowed(struct ospf_lsa_header *lsa, u32 domain, struct ospf_iface *ifa);
|
||||
void ospf_lsupd_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, struct ospf_neighbor *n);
|
||||
int ospf_lsupd_flood(struct proto_ospf *po, struct top_hash_entry *en, struct ospf_neighbor *from);
|
||||
int ospf_lsupd_send(struct ospf_neighbor *n, struct top_hash_entry **lsa_list, unsigned lsa_count);
|
||||
|
||||
|
||||
#endif /* _BIRD_OSPF_LSUPD_H_ */
|
||||
|
@ -600,51 +600,30 @@ rxmt_timer_hook(timer * timer)
|
||||
// struct proto *p = &n->ifa->oa->po->proto;
|
||||
struct top_hash_entry *en;
|
||||
|
||||
DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n",
|
||||
DBG("%s: RXMT timer fired on interface %s for neigh %I\n",
|
||||
p->name, n->ifa->iface->name, n->ip);
|
||||
|
||||
if(n->state < NEIGHBOR_EXSTART) return;
|
||||
|
||||
if (n->state == NEIGHBOR_EXSTART)
|
||||
switch (n->state)
|
||||
{
|
||||
case NEIGHBOR_EXSTART:
|
||||
ospf_dbdes_send(n, 1);
|
||||
return;
|
||||
}
|
||||
|
||||
if ((n->state == NEIGHBOR_EXCHANGE) && (n->myimms & DBDES_MS)) /* I'm master */
|
||||
case NEIGHBOR_EXCHANGE:
|
||||
if (n->myimms & DBDES_MS)
|
||||
ospf_dbdes_send(n, 0);
|
||||
case NEIGHBOR_LOADING:
|
||||
ospf_lsreq_send(n);
|
||||
return;
|
||||
|
||||
case NEIGHBOR_FULL:
|
||||
/* LSA retransmissions */
|
||||
if (!EMPTY_SLIST(n->lsrtl))
|
||||
ospf_lsupd_rxmt(n);
|
||||
return;
|
||||
|
||||
if (n->state < NEIGHBOR_FULL)
|
||||
ospf_lsreq_send(n); /* EXCHANGE or LOADING */
|
||||
else
|
||||
{
|
||||
if (!EMPTY_SLIST(n->lsrtl)) /* FULL */
|
||||
{
|
||||
struct ospf_lsreq_item *lsr_head, *lsr;
|
||||
struct ospf_lsreq_item **lsr_pos = &lsr_head;
|
||||
|
||||
slab *upslab = sl_new(n->pool, sizeof(struct ospf_lsreq_item));
|
||||
|
||||
WALK_SLIST(en, n->lsrtl)
|
||||
{
|
||||
if ((SNODE en)->next == (SNODE en))
|
||||
bug("RTList is cycled");
|
||||
|
||||
lsr = sl_alloc(upslab);
|
||||
lsr->domain = en->domain;
|
||||
lsr->type = en->lsa_type;
|
||||
lsr->id = en->lsa.id;
|
||||
lsr->rt = en->lsa.rt;
|
||||
|
||||
*lsr_pos = lsr;
|
||||
lsr_pos = &(lsr->next);
|
||||
}
|
||||
*lsr_pos = NULL;
|
||||
|
||||
ospf_lsupd_send_list(n, lsr_head);
|
||||
rfree(upslab);
|
||||
}
|
||||
default:
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -586,15 +586,6 @@ struct ospf_lsreq_header
|
||||
u32 rt;
|
||||
};
|
||||
|
||||
struct ospf_lsreq_item
|
||||
{
|
||||
struct ospf_lsreq_item *next;
|
||||
u32 domain;
|
||||
u32 type;
|
||||
u32 id;
|
||||
u32 rt;
|
||||
};
|
||||
|
||||
|
||||
struct ospf_neighbor
|
||||
{
|
||||
|
@ -429,23 +429,23 @@ void
|
||||
originate_rt_lsa(struct ospf_area *oa)
|
||||
{
|
||||
struct proto_ospf *po = oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
u32 dom = oa->areaid;
|
||||
void *body;
|
||||
struct ospf_lsa_new lsa;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating router-LSA for area %R", oa->areaid);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_RT;
|
||||
lsa.id = ospf_is_v2(po) ? po->router_id : 0;
|
||||
lsa.rt = po->router_id;
|
||||
lsa.sn = get_seqnum(oa->rt);
|
||||
lsa_fix_options(po, &lsa, oa->options);
|
||||
lsa.type = LSA_T_RT;
|
||||
lsa.dom = oa->areaid;
|
||||
lsa.id = ospf_is_v2(po) ? po->router_id : 0;
|
||||
lsa.opts = oa->options;
|
||||
lsa.body = originate_rt_lsa_body(po, oa, &lsa.length);
|
||||
|
||||
body = originate_rt_lsa_body(po, oa, &lsa.length);
|
||||
lsasum_calculate(&lsa, body);
|
||||
oa->rt = lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
ospf_originate_lsa(po, &lsa, &oa->rt);
|
||||
|
||||
// lsa.rt = po->router_id;
|
||||
// lsa_fix_options(po, &lsa, oa->options);
|
||||
// lsasum_calculate(&lsa, body);
|
||||
// ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
// lsa_install_new(po, &lsa, oa->rt);
|
||||
}
|
||||
|
||||
void
|
||||
@ -559,24 +559,17 @@ void
|
||||
originate_net_lsa(struct ospf_iface *ifa)
|
||||
{
|
||||
struct proto_ospf *po = ifa->oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
u32 dom = ifa->oa->areaid;
|
||||
void *body;
|
||||
struct ospf_lsa_new lsa;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating network-LSA for iface %s",
|
||||
ifa->iface->name);
|
||||
OSPF_TRACE(D_EVENTS, "Originating network-LSA for iface %s", ifa->iface->name);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_NET;
|
||||
lsa.id = ospf_is_v2(po) ? ipa_to_u32(ifa->addr->ip) : ifa->iface_id;
|
||||
lsa.rt = po->router_id;
|
||||
lsa.sn = get_seqnum(ifa->net_lsa);
|
||||
lsa_fix_options(po, &lsa, ifa->oa->options);
|
||||
lsa.type = LSA_T_NET;
|
||||
lsa.dom = ifa->oa->areaid;
|
||||
lsa.id = ospf_is_v2(po) ? ipa_to_u32(ifa->addr->ip) : ifa->iface_id;
|
||||
lsa.opts = ifa->oa->options;
|
||||
lsa.body = originate_net_lsa_body(po, ifa, &lsa.length);
|
||||
|
||||
body = originate_net_lsa_body(po, ifa, &lsa.length);
|
||||
lsasum_calculate(&lsa, body);
|
||||
ifa->net_lsa = lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
ifa->net_lsa = ospf_originate_lsa(po, &lsa, ifa->net_lsa);
|
||||
}
|
||||
|
||||
void
|
||||
@ -755,89 +748,76 @@ void
|
||||
originate_sum_net_lsa(struct ospf_area *oa, struct fib_node *fn, int metric)
|
||||
{
|
||||
struct proto_ospf *po = oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
struct ospf_lsa_new lsa;
|
||||
struct top_hash_entry *en;
|
||||
u32 dom = oa->areaid;
|
||||
void *body;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating net-summary-LSA for %I/%d (metric %d)",
|
||||
fn->prefix, fn->pxlen, metric);
|
||||
OSPF_TRACE(D_EVENTS, "Originating net-summary-LSA for %I/%d (metric %d)", fn->prefix, fn->pxlen, metric);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_SUM_NET;
|
||||
lsa.id = fibnode_to_lsaid(po, fn);
|
||||
lsa.rt = po->router_id;
|
||||
lsa_fix_options(po, &lsa, oa->options);
|
||||
lsa.type = LSA_T_SUM_NET;
|
||||
lsa.dom = oa->areaid;
|
||||
lsa.id = fibnode_to_lsaid(po, fn);
|
||||
lsa.opts = oa->options;
|
||||
|
||||
en = ospf_hash_find_header(po->gr, dom, &lsa);
|
||||
en = ospf_hash_find(po->gr, lsa.dom, lsa.id, po->router_id, lsa.type);
|
||||
if (en && check_sum_net_lsa(po, en, fn, metric))
|
||||
return;
|
||||
lsa.sn = get_seqnum(en);
|
||||
|
||||
body = originate_sum_net_lsa_body(po, &lsa.length, fn, metric);
|
||||
lsasum_calculate(&lsa, body);
|
||||
lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
lsa.body = originate_sum_net_lsa_body(po, &lsa.length, fn, metric);
|
||||
|
||||
ospf_originate_lsa(po, &lsa, en);
|
||||
}
|
||||
|
||||
void
|
||||
originate_sum_rt_lsa(struct ospf_area *oa, struct fib_node *fn, int metric, u32 options)
|
||||
{
|
||||
struct proto_ospf *po = oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
struct ospf_lsa_new lsa;
|
||||
struct top_hash_entry *en;
|
||||
u32 rid = ipa_to_rid(fn->prefix);
|
||||
u32 dom = oa->areaid;
|
||||
void *body;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating rt-summary-LSA for %R (metric %d)",
|
||||
rid, metric);
|
||||
OSPF_TRACE(D_EVENTS, "Originating rt-summary-LSA for %R (metric %d)", rid, metric);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_SUM_RT;
|
||||
lsa.id = rid; /* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */
|
||||
lsa.rt = po->router_id;
|
||||
lsa_fix_options(po, &lsa, oa->options);
|
||||
lsa.type = LSA_T_SUM_RT;
|
||||
lsa.dom = oa->areaid;
|
||||
lsa.id = rid; /* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */
|
||||
lsa.opts = oa->options;
|
||||
|
||||
options &= OPTIONS_MASK;
|
||||
|
||||
en = ospf_hash_find_header(po->gr, dom, &lsa);
|
||||
en = ospf_hash_find(po->gr, lsa.dom, lsa.id, po->router_id, lsa.type);
|
||||
if (en && check_sum_rt_lsa(po, en, rid, metric, options))
|
||||
return;
|
||||
lsa.sn = get_seqnum(en);
|
||||
|
||||
body = originate_sum_rt_lsa_body(po, &lsa.length, rid, metric, options);
|
||||
lsasum_calculate(&lsa, body);
|
||||
lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
lsa.body = originate_sum_rt_lsa_body(po, &lsa.length, rid, metric, options);
|
||||
|
||||
ospf_originate_lsa(po, &lsa, en);
|
||||
}
|
||||
|
||||
void
|
||||
flush_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type)
|
||||
{
|
||||
struct proto_ospf *po = oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
struct top_hash_entry *en;
|
||||
u32 dom = oa->areaid;
|
||||
u32 dom, lsid, type;
|
||||
|
||||
lsa.rt = po->router_id;
|
||||
if (type == ORT_NET)
|
||||
{
|
||||
lsa.id = fibnode_to_lsaid(po, fn);
|
||||
lsa.type_raw = LSA_T_SUM_NET;
|
||||
}
|
||||
{
|
||||
dom = oa->areaid;
|
||||
type = LSA_T_SUM_NET;
|
||||
lsid = fibnode_to_lsaid(po, fn);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */
|
||||
lsa.id = ipa_to_rid(fn->prefix);
|
||||
lsa.type_raw = LSA_T_SUM_RT;
|
||||
}
|
||||
{
|
||||
/* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */
|
||||
dom = oa->areaid;
|
||||
type = LSA_T_SUM_RT;
|
||||
lsid = ipa_to_rid(fn->prefix);
|
||||
}
|
||||
|
||||
en = ospf_hash_find_header(po->gr, dom, &lsa);
|
||||
en = ospf_hash_find(po->gr, dom, lsid, po->router_id, type);
|
||||
if (en)
|
||||
{
|
||||
OSPF_TRACE(D_EVENTS, "Flushing summary-LSA (id=%R, type=%d)",
|
||||
en->lsa.id, en->lsa.type_raw);
|
||||
OSPF_TRACE(D_EVENTS, "Flushing summary-LSA (id=%R, type=%x)", lsid, type);
|
||||
|
||||
if ((type == ORT_NET) && (check_sum_net_lsa(po, en, fn, 0) < 0))
|
||||
return;
|
||||
@ -1061,42 +1041,45 @@ originate_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int src,
|
||||
u32 metric, ip_addr fwaddr, u32 tag, int pbit)
|
||||
{
|
||||
struct proto_ospf *po = oa->po;
|
||||
struct proto *p = &po->proto;
|
||||
struct ospf_lsa_header lsa;
|
||||
struct ospf_lsa_new lsa;
|
||||
struct top_hash_entry *en;
|
||||
int nssa = oa_is_nssa(oa);
|
||||
u32 dom = nssa ? oa->areaid : 0;
|
||||
void *body;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating %s-LSA for %I/%d",
|
||||
nssa ? "NSSA" : "AS-external", fn->prefix, fn->pxlen);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = nssa ? LSA_T_NSSA : LSA_T_EXT;
|
||||
lsa.id = fibnode_to_lsaid(po, fn);
|
||||
lsa.rt = po->router_id;
|
||||
lsa_fix_options(po, &lsa, nssa ? (pbit ? OPT_P : 0) : OPT_E);
|
||||
|
||||
if (nssa && pbit && ipa_zero(fwaddr))
|
||||
if (! nssa)
|
||||
{
|
||||
/* NSSA-LSA with P-bit set must have non-zero forwarding address */
|
||||
lsa.type = LSA_T_EXT;
|
||||
lsa.dom = 0;
|
||||
lsa.id = fibnode_to_lsaid(po, fn);
|
||||
lsa.opts = OPT_E;
|
||||
}
|
||||
else
|
||||
{
|
||||
lsa.type = LSA_T_NSSA;
|
||||
lsa.dom = oa->areaid;
|
||||
lsa.id = fibnode_to_lsaid(po, fn);
|
||||
lsa.opts = pbit ? OPT_P : 0;
|
||||
|
||||
fwaddr = find_surrogate_fwaddr(oa);
|
||||
if (ipa_zero(fwaddr))
|
||||
/* NSSA-LSA with P-bit set must have non-zero forwarding address */
|
||||
if (pbit && ipa_zero(fwaddr))
|
||||
{
|
||||
log(L_ERR "%s: Cannot find forwarding address for NSSA-LSA %I/%d",
|
||||
p->name, fn->prefix, fn->pxlen);
|
||||
return;
|
||||
fwaddr = find_surrogate_fwaddr(oa);
|
||||
if (ipa_zero(fwaddr))
|
||||
{
|
||||
log(L_ERR "%s: Cannot find forwarding address for NSSA-LSA %I/%d",
|
||||
po->proto.name, fn->prefix, fn->pxlen);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
en = ospf_hash_find_header(po->gr, dom, &lsa);
|
||||
en = ospf_hash_find(po->gr, lsa.dom, lsa.id, po->router_id, lsa.type);
|
||||
if (en && check_ext_lsa(po, en, fn, metric, fwaddr, tag))
|
||||
return;
|
||||
lsa.sn = get_seqnum(en);
|
||||
|
||||
body = originate_ext_lsa_body(po, &lsa.length, fn, metric, fwaddr, tag, pbit);
|
||||
lsasum_calculate(&lsa, body);
|
||||
lsa.body = originate_ext_lsa_body(po, &lsa.length, fn, metric, fwaddr, tag, pbit);
|
||||
|
||||
if (src)
|
||||
{
|
||||
@ -1104,8 +1087,7 @@ originate_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int src,
|
||||
fn->flags |= src;
|
||||
}
|
||||
|
||||
lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
ospf_originate_lsa(po, &lsa, en);
|
||||
|
||||
if (po->ebit == 0)
|
||||
{
|
||||
@ -1126,20 +1108,16 @@ flush_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int src, int nssa)
|
||||
|
||||
u32 dom = nssa ? oa->areaid : 0;
|
||||
u32 type = nssa ? LSA_T_NSSA : LSA_T_EXT;
|
||||
u32 lsaid = fibnode_to_lsaid(po, fn);
|
||||
u32 lsid = fibnode_to_lsaid(po, fn);
|
||||
|
||||
en = ospf_hash_find(po->gr, dom, lsaid, po->router_id, type);
|
||||
en = ospf_hash_find(po->gr, dom, lsid, po->router_id, type);
|
||||
if (en)
|
||||
{
|
||||
OSPF_TRACE(D_EVENTS, "Flushing %s-LSA for %I/%d",
|
||||
nssa ? "NSSA" : "AS-external", fn->prefix, fn->pxlen);
|
||||
|
||||
if (check_ext_lsa(po, en, fn, 0, IPA_NONE, 0) < 0)
|
||||
{
|
||||
log(L_ERR "%s: LSAID collision for %I/%d",
|
||||
p->name, fn->prefix, fn->pxlen);
|
||||
return;
|
||||
}
|
||||
return;
|
||||
|
||||
/* Clean up source bits */
|
||||
if (src) // XXXX ???
|
||||
@ -1192,22 +1170,17 @@ originate_link_lsa(struct ospf_iface *ifa)
|
||||
{
|
||||
struct proto_ospf *po = ifa->oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
u32 dom = ifa->iface_id;
|
||||
void *body;
|
||||
|
||||
/* FIXME check for vlink and skip that? */
|
||||
OSPF_TRACE(D_EVENTS, "Originating link-LSA for iface %s", ifa->iface->name);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_LINK;
|
||||
lsa.id = ifa->iface_id;
|
||||
lsa.rt = po->router_id;
|
||||
lsa.sn = get_seqnum(ifa->link_lsa);
|
||||
lsa.type = LSA_T_LINK;
|
||||
lsa.dom = ifa->iface_id;
|
||||
lsa.id = ifa->iface_id;
|
||||
lsa.opts = 0;
|
||||
lsa.body = originate_link_lsa_body(ifa, &lsa.length);
|
||||
|
||||
body = originate_link_lsa_body(ifa, &lsa.length);
|
||||
lsasum_calculate(&lsa, body);
|
||||
ifa->link_lsa = lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
ifa->link_lsa = ospf_originate_lsa(po, &lsa, ifa->link_lsa);
|
||||
|
||||
/* Just to be sure to not forget on our link LSA */
|
||||
if (ifa->state == OSPF_IS_DR)
|
||||
@ -1344,21 +1317,16 @@ originate_prefix_rt_lsa(struct ospf_area *oa)
|
||||
{
|
||||
struct proto_ospf *po = oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
u32 dom = oa->areaid;
|
||||
void *body;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating router prefix-LSA for area %R", oa->areaid);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_PREFIX;
|
||||
lsa.id = 0;
|
||||
lsa.rt = po->router_id;
|
||||
lsa.sn = get_seqnum(oa->pxr_lsa);
|
||||
lsa.type = LSA_T_PREFIX;
|
||||
lsa.dom = oa->areaid;
|
||||
lsa.id = 0;
|
||||
lsa.opts = 0;
|
||||
lsa.body = originate_prefix_rt_lsa_body(oa, &lsa.length);
|
||||
|
||||
body = originate_prefix_rt_lsa_body(oa, &lsa.length);
|
||||
lsasum_calculate(&lsa, body);
|
||||
oa->pxr_lsa = lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
oa->pxr_lsa = ospf_originate_lsa(po, &lsa, oa->pxr_lsa);
|
||||
}
|
||||
|
||||
|
||||
@ -1485,23 +1453,17 @@ void
|
||||
originate_prefix_net_lsa(struct ospf_iface *ifa)
|
||||
{
|
||||
struct proto_ospf *po = ifa->oa->po;
|
||||
struct ospf_lsa_header lsa;
|
||||
u32 dom = ifa->oa->areaid;
|
||||
void *body;
|
||||
struct ospf_lsa_new lsa;
|
||||
|
||||
OSPF_TRACE(D_EVENTS, "Originating network prefix-LSA for iface %s",
|
||||
ifa->iface->name);
|
||||
OSPF_TRACE(D_EVENTS, "Originating network prefix-LSA for iface %s", ifa->iface->name);
|
||||
|
||||
lsa.age = 0;
|
||||
lsa.type_raw = LSA_T_PREFIX;
|
||||
lsa.id = ifa->iface_id;
|
||||
lsa.rt = po->router_id;
|
||||
lsa.sn = get_seqnum(ifa->pxn_lsa);
|
||||
lsa.type = LSA_T_PREFIX;
|
||||
lsa.dom = ifa->oa->areaid;
|
||||
lsa.id = ifa->iface_id;
|
||||
lsa.opts = 0;
|
||||
lsa.body = originate_prefix_net_lsa_body(ifa, &lsa.length);
|
||||
|
||||
body = originate_prefix_net_lsa_body(ifa, &lsa.length);
|
||||
lsasum_calculate(&lsa, body);
|
||||
ifa->pxn_lsa = lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
ifa->pxn_lsa = ospf_originate_lsa(po, &lsa, ifa->pxn_lsa);
|
||||
}
|
||||
|
||||
void
|
||||
@ -1638,18 +1600,6 @@ ospf_top_rehash(struct top_graph *f, int step)
|
||||
ospf_top_ht_free(oldt);
|
||||
}
|
||||
|
||||
struct top_hash_entry *
|
||||
ospf_hash_find_header(struct top_graph *f, u32 domain, struct ospf_lsa_header *h)
|
||||
{
|
||||
return ospf_hash_find(f, domain, h->id, h->rt, h->type);
|
||||
}
|
||||
|
||||
struct top_hash_entry *
|
||||
ospf_hash_get_header(struct top_graph *f, u32 domain, struct ospf_lsa_header *h)
|
||||
{
|
||||
return ospf_hash_get(f, domain, h->id, h->rt, h->type);
|
||||
}
|
||||
|
||||
struct top_hash_entry *
|
||||
ospf_hash_find(struct top_graph *f, u32 domain, u32 lsa, u32 rtr, u32 type)
|
||||
{
|
||||
@ -1861,3 +1811,13 @@ can_flush_lsa(struct proto_ospf *po)
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
ospf_originate_lsa(struct proto_ospf *po, struct ospf_lsa_header *lsa)
|
||||
{
|
||||
struct ospf_lsa_header hdr;
|
||||
|
||||
lsasum_calculate(&lsa, body);
|
||||
xx = lsa_install_new(po, &lsa, dom, body);
|
||||
ospf_lsupd_flood(po, NULL, NULL, &lsa, dom, 1);
|
||||
|
||||
}
|
||||
|
@ -47,18 +47,22 @@ struct top_graph
|
||||
unsigned int hash_entries_min, hash_entries_max;
|
||||
};
|
||||
|
||||
struct ospf_lsa_new
|
||||
{
|
||||
u16 type;
|
||||
u32 dom;
|
||||
u32 id;
|
||||
u16 opts;
|
||||
u16 length;
|
||||
void *body;
|
||||
|
||||
};
|
||||
|
||||
struct top_graph *ospf_top_new(pool *);
|
||||
void ospf_top_free(struct top_graph *);
|
||||
void ospf_top_dump(struct top_graph *, struct proto *);
|
||||
|
||||
struct top_hash_entry *ospf_hash_find_header(struct top_graph *f, u32 domain,
|
||||
struct ospf_lsa_header *h);
|
||||
struct top_hash_entry *ospf_hash_get_header(struct top_graph *f, u32 domain,
|
||||
struct ospf_lsa_header *h);
|
||||
|
||||
struct top_hash_entry *ospf_hash_find(struct top_graph *, u32 domain, u32 lsa, u32 rtr, u32 type);
|
||||
struct top_hash_entry *ospf_hash_get(struct top_graph *, u32 domain, u32 lsa, u32 rtr, u32 type);
|
||||
void ospf_hash_delete(struct top_graph *, struct top_hash_entry *);
|
||||
void originate_rt_lsa(struct ospf_area *oa);
|
||||
void update_rt_lsa(struct ospf_area *oa);
|
||||
void originate_net_lsa(struct ospf_iface *ifa);
|
||||
@ -72,6 +76,17 @@ void flush_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type);
|
||||
void originate_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int src, u32 metric, ip_addr fwaddr, u32 tag, int pbit);
|
||||
void flush_ext_lsa(struct ospf_area *oa, struct fib_node *fn, int src, int nssa);
|
||||
|
||||
|
||||
struct top_hash_entry *ospf_hash_find(struct top_graph *, u32 domain, u32 lsa, u32 rtr, u32 type);
|
||||
struct top_hash_entry *ospf_hash_get(struct top_graph *, u32 domain, u32 lsa, u32 rtr, u32 type);
|
||||
void ospf_hash_delete(struct top_graph *, struct top_hash_entry *);
|
||||
|
||||
static inline struct top_hash_entry * ospf_hash_find_entry(struct top_graph *f, struct top_hash_entry *en)
|
||||
{ return ospf_hash_find(f, en->domain, en->lsa.id, en->lsa.rt, en->lsa_type); }
|
||||
|
||||
static inline struct top_hash_entry * ospf_hash_get_entry(struct top_graph *f, struct top_hash_entry *en)
|
||||
{ return ospf_hash_get(f, en->domain, en->lsa.id, en->lsa.rt, en->lsa_type); }
|
||||
|
||||
struct top_hash_entry * ospf_hash_find_rt(struct top_graph *f, u32 domain, u32 rtr);
|
||||
struct top_hash_entry * ospf_hash_find_rt3_first(struct top_graph *f, u32 domain, u32 rtr);
|
||||
struct top_hash_entry * ospf_hash_find_rt3_next(struct top_hash_entry *e);
|
||||
|
Loading…
Reference in New Issue
Block a user