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Diffstat (limited to 'proto/ospf/lsack.c')
-rw-r--r--proto/ospf/lsack.c102
1 files changed, 47 insertions, 55 deletions
diff --git a/proto/ospf/lsack.c b/proto/ospf/lsack.c
index 824767a..c740ef6 100644
--- a/proto/ospf/lsack.c
+++ b/proto/ospf/lsack.c
@@ -8,6 +8,14 @@
#include "ospf.h"
+
+struct ospf_lsack_packet
+{
+ struct ospf_packet ospf_packet;
+ struct ospf_lsa_header lsh[];
+};
+
+
char *s_queue[] = { "direct", "delayed" };
@@ -18,14 +26,12 @@ static void ospf_dump_lsack(struct proto *p, struct ospf_lsack_packet *pkt)
ASSERT(op->type == LSACK_P);
ospf_dump_common(p, op);
- struct ospf_lsa_header *plsa = (void *) (pkt + 1);
- int i, j;
-
+ unsigned int i, j;
j = (ntohs(op->length) - sizeof(struct ospf_lsack_packet)) /
sizeof(struct ospf_lsa_header);
for (i = 0; i < j; i++)
- ospf_dump_lsahdr(p, plsa + i);
+ ospf_dump_lsahdr(p, pkt->lsh + i);
}
@@ -51,7 +57,6 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
{
struct ospf_packet *op;
struct ospf_lsack_packet *pk;
- sock *sk;
u16 len, i = 0;
struct ospf_lsa_header *h;
struct lsah_n *no;
@@ -61,24 +66,19 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
if (EMPTY_LIST(n->ackl[queue]))
return;
- if (ifa->type == OSPF_IT_BCAST)
- sk = ifa->hello_sk;
- else
- sk = ifa->ip_sk;
-
- pk = (struct ospf_lsack_packet *) sk->tbuf;
- op = (struct ospf_packet *) sk->tbuf;
+ pk = (struct ospf_lsack_packet *) ifa->sk->tbuf;
+ op = (struct ospf_packet *) ifa->sk->tbuf;
ospf_pkt_fill_hdr(n->ifa, pk, LSACK_P);
- h = (struct ospf_lsa_header *) (pk + 1);
+ h = pk->lsh;
while (!EMPTY_LIST(n->ackl[queue]))
{
no = (struct lsah_n *) HEAD(n->ackl[queue]);
memcpy(h + i, &no->lsa, sizeof(struct ospf_lsa_header));
- i++;
- DBG("Iter %u ID: %R, RT: %R, Type: %u\n", i, ntohl((h + i)->id),
+ DBG("Iter %u ID: %R, RT: %R, Type: %04x\n", i, ntohl((h + i)->id),
ntohl((h + i)->rt), (h + i)->type);
+ i++;
rem_node(NODE no);
mb_free(no);
if ((i * sizeof(struct ospf_lsa_header) +
@@ -92,22 +92,22 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
op->length = htons(len);
DBG("Sending and continuing! Len=%u\n", len);
- OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) sk->tbuf,
+ OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) ifa->sk->tbuf,
"LSACK packet sent via %s", ifa->iface->name);
if (ifa->type == OSPF_IT_BCAST)
{
if ((ifa->state == OSPF_IS_DR) || (ifa->state == OSPF_IS_BACKUP))
- ospf_send_to(sk, AllSPFRouters, ifa);
+ ospf_send_to(ifa, AllSPFRouters);
else
- ospf_send_to(sk, AllDRouters, ifa);
+ ospf_send_to(ifa, AllDRouters);
}
else
{
if ((ifa->state == OSPF_IS_DR) || (ifa->state == OSPF_IS_BACKUP))
- ospf_send_to_agt(sk, ifa, NEIGHBOR_EXCHANGE);
+ ospf_send_to_agt(ifa, NEIGHBOR_EXCHANGE);
else
- ospf_send_to_bdr(sk, ifa);
+ ospf_send_to_bdr(ifa);
}
ospf_pkt_fill_hdr(n->ifa, pk, LSACK_P);
@@ -120,36 +120,37 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
op->length = htons(len);
DBG("Sending! Len=%u\n", len);
- OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) sk->tbuf,
+ OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) ifa->sk->tbuf,
"LSACK packet sent via %s", ifa->iface->name);
if (ifa->type == OSPF_IT_BCAST)
{
if ((ifa->state == OSPF_IS_DR) || (ifa->state == OSPF_IS_BACKUP))
- {
- ospf_send_to(sk, AllSPFRouters, ifa);
- }
+ ospf_send_to(ifa, AllSPFRouters);
else
- {
- ospf_send_to(sk, AllDRouters, ifa);
- }
+ ospf_send_to(ifa, AllDRouters);
}
else
- {
- ospf_send_to_agt(sk, ifa, NEIGHBOR_EXCHANGE);
- }
+ ospf_send_to_agt(ifa, NEIGHBOR_EXCHANGE);
}
void
-ospf_lsack_receive(struct ospf_lsack_packet *ps,
- struct ospf_iface *ifa, struct ospf_neighbor *n)
+ospf_lsack_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
+ struct ospf_neighbor *n)
{
- struct ospf_lsa_header lsa, *plsa;
- u16 nolsa;
- struct top_hash_entry *en;
struct proto *p = &ifa->oa->po->proto;
- unsigned int size = ntohs(ps->ospf_packet.length), i;
+ 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);
@@ -157,22 +158,13 @@ ospf_lsack_receive(struct ospf_lsack_packet *ps,
if (n->state < NEIGHBOR_EXCHANGE)
return;
- nolsa = (size - sizeof(struct ospf_lsack_packet)) /
+ lsano = (size - sizeof(struct ospf_lsack_packet)) /
sizeof(struct ospf_lsa_header);
-
- if ((nolsa < 1) || ((size - sizeof(struct ospf_lsack_packet)) !=
- (nolsa * sizeof(struct ospf_lsa_header))))
- {
- log(L_ERR "Received corrupted LS ack from %I", n->ip);
- return;
- }
-
- plsa = (struct ospf_lsa_header *) (ps + 1);
-
- for (i = 0; i < nolsa; i++)
+ for (i = 0; i < lsano; i++)
{
- ntohlsah(plsa + i, &lsa);
- if ((en = ospf_hash_find_header(n->lsrth, n->ifa->oa->areaid, &lsa)) == NULL)
+ 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 */
@@ -180,12 +172,12 @@ ospf_lsack_receive(struct ospf_lsack_packet *ps,
if ((lsa.sn == LSA_MAXSEQNO) && (lsa.age == LSA_MAXAGE))
continue;
- OSPF_TRACE(D_PACKETS, "Strange LS acknoledgement from %I", n->ip);
- OSPF_TRACE(D_PACKETS, "Id: %R, Rt: %R, Type: %u",
- lsa.id, lsa.rt, lsa.type);
- OSPF_TRACE(D_PACKETS, "I have: Age: %4u, Seqno: 0x%08x, Sum: %u",
+ 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, Seqno: 0x%08x, Sum: %u",
+ OSPF_TRACE(D_PACKETS, "He has: Age: %4u, Seq: %08x, Sum: %04x",
lsa.age, lsa.sn, lsa.checksum);
continue;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 18:08:21 +0200