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-rw-r--r--proto/rip/packets.c60
-rw-r--r--proto/rip/rip.c48
-rw-r--r--proto/rip/rip.h7
3 files changed, 54 insertions, 61 deletions
diff --git a/proto/rip/packets.c b/proto/rip/packets.c
index be20734f..e2a2390b 100644
--- a/proto/rip/packets.c
+++ b/proto/rip/packets.c
@@ -78,8 +78,7 @@ struct rip_auth_tail
/* Internal representation of RTE block data */
struct rip_block
{
- ip_addr prefix;
- int pxlen;
+ net_addr net;
u32 metric;
u16 tag;
u16 no_af;
@@ -115,17 +114,17 @@ rip_put_block(struct rip_proto *p, byte *pos, struct rip_block *rte)
struct rip_block_v2 *block = (void *) pos;
block->family = rte->no_af ? 0 : htons(RIP_AF_IPV4);
block->tag = htons(rte->tag);
- block->network = ip4_hton(ipa_to_ip4(rte->prefix));
- block->netmask = ip4_hton(ip4_mkmask(rte->pxlen));
+ block->network = ip4_hton(net4_prefix(&rte->net));
+ block->netmask = ip4_hton(ip4_mkmask(net4_pxlen(&rte->net)));
block->next_hop = ip4_hton(ipa_to_ip4(rte->next_hop));
block->metric = htonl(rte->metric);
}
else /* RIPng */
{
struct rip_block_ng *block = (void *) pos;
- block->prefix = ip6_hton(ipa_to_ip6(rte->prefix));
+ block->prefix = ip6_hton(net6_prefix(&rte->net));
block->tag = htons(rte->tag);
- block->pxlen = rte->pxlen;
+ block->pxlen = net6_pxlen(&rte->net);
block->metric = rte->metric;
}
}
@@ -151,8 +150,8 @@ rip_get_block(struct rip_proto *p, byte *pos, struct rip_block *rte)
if (block->family != (rte->no_af ? 0 : htons(RIP_AF_IPV4)))
return 0;
- rte->prefix = ipa_from_ip4(ip4_ntoh(block->network));
- rte->pxlen = ip4_masklen(ip4_ntoh(block->netmask));
+ uint pxlen = ip4_masklen(ip4_ntoh(block->netmask));
+ net_fill_ip4(&rte->net, ip4_ntoh(block->network), pxlen);
rte->metric = ntohl(block->metric);
rte->tag = ntohs(block->tag);
rte->next_hop = ipa_from_ip4(ip4_ntoh(block->next_hop));
@@ -171,8 +170,8 @@ rip_get_block(struct rip_proto *p, byte *pos, struct rip_block *rte)
return 0;
}
- rte->prefix = ipa_from_ip6(ip6_ntoh(block->prefix));
- rte->pxlen = block->pxlen;
+ uint pxlen = (block->pxlen < IP6_MAX_PREFIX_LENGTH) ? block->pxlen : 255;
+ net_fill_ip6(&rte->net, ip6_ntoh(block->prefix), pxlen);
rte->metric = block->metric;
rte->tag = ntohs(block->tag);
/* rte->next_hop is deliberately kept unmodified */;
@@ -385,8 +384,9 @@ rip_receive_request(struct rip_proto *p, struct rip_iface *ifa, struct rip_packe
if (!rip_get_block(p, pos, &b))
return;
- /* Special case - zero prefix, infinity metric */
- if (ipa_nonzero(b.prefix) || b.pxlen || (b.metric != p->infinity))
+ /* Special case - infinity metric, for RIPng also zero prefix */
+ if ((b.metric != p->infinity) ||
+ (rip_is_ng(p) && !net_zero_ip6((net_addr_ip6 *) &b.net)))
return;
/* We do nothing if TX is already active */
@@ -444,23 +444,23 @@ rip_send_response(struct rip_proto *p, struct rip_iface *ifa)
}
struct rip_block rte = {
- .prefix = en->n.prefix,
- .pxlen = en->n.pxlen,
.metric = en->metric,
.tag = en->tag
};
+ net_copy(&rte.net, en->n.addr);
+
if (en->iface == ifa->iface)
rte.next_hop = en->next_hop;
if (rip_is_v2(p) && (ifa->cf->version == RIP_V1))
{
/* Skipping subnets (i.e. not hosts, classful networks or default route) */
- if (ip4_masklen(ip4_class_mask(ipa_to_ip4(en->n.prefix))) != en->n.pxlen)
+ if (ip4_masklen(ip4_class_mask(net4_prefix(&rte.net))) != rte.net.pxlen)
goto next_entry;
rte.tag = 0;
- rte.pxlen = 0;
+ rte.net.pxlen = 0;
rte.next_hop = IPA_NONE;
}
@@ -476,7 +476,7 @@ rip_send_response(struct rip_proto *p, struct rip_iface *ifa)
goto next_entry;
}
- // TRACE(D_PACKETS, " %I/%d -> %I metric %d", rte.prefix, rte.pxlen, rte.next_hop, rte.metric);
+ // TRACE(D_PACKETS, " %N -> %I metric %d", &rte.net, rte.next_hop, rte.metric);
/* RIPng next hop entry */
if (rip_is_ng(p) && !ipa_equal(rte.next_hop, last_next_hop))
@@ -577,23 +577,25 @@ rip_receive_response(struct rip_proto *p, struct rip_iface *ifa, struct rip_pack
if (!rip_get_block(p, pos, &rte))
continue;
- int c = ipa_classify_net(rte.prefix);
- if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
- SKIP("invalid prefix");
-
if (rip_is_v2(p) && (pkt->version == RIP_V1))
{
- if (ifa->cf->check_zero && (rte.tag || rte.pxlen || ipa_nonzero(rte.next_hop)))
+ if (ifa->cf->check_zero && (rte.tag || rte.net.pxlen || ipa_nonzero(rte.next_hop)))
SKIP("RIPv1 reserved field is nonzero");
rte.tag = 0;
- rte.pxlen = ip4_masklen(ip4_class_mask(ipa_to_ip4(rte.prefix)));
+ rte.net.pxlen = ip4_masklen(ip4_class_mask(net4_prefix(&rte.net)));
rte.next_hop = IPA_NONE;
}
- if ((rte.pxlen < 0) || (rte.pxlen > MAX_PREFIX_LENGTH))
+ if (rte.net.pxlen == 255)
SKIP("invalid prefix length");
+ net_normalize(&rte.net);
+
+ int c = net_classify(&rte.net);
+ if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
+ SKIP("invalid prefix");
+
if (rte.metric > p->infinity)
SKIP("invalid metric");
@@ -604,7 +606,7 @@ rip_receive_response(struct rip_proto *p, struct rip_iface *ifa, struct rip_pack
rte.next_hop = IPA_NONE;
}
- // TRACE(D_PACKETS, " %I/%d -> %I metric %d", rte.prefix, rte.pxlen, rte.next_hop, rte.metric);
+ // TRACE(D_PACKETS, " %N -> %I metric %d", &rte.net.n, rte.next_hop, rte.metric);
rte.metric += ifa->cf->metric;
@@ -618,16 +620,16 @@ rip_receive_response(struct rip_proto *p, struct rip_iface *ifa, struct rip_pack
.expires = now + ifa->cf->timeout_time
};
- rip_update_rte(p, &rte.prefix, rte.pxlen, &new);
+ rip_update_rte(p, &rte.net, &new);
}
else
- rip_withdraw_rte(p, &rte.prefix, rte.pxlen, from);
+ rip_withdraw_rte(p, &rte.net, from);
continue;
skip:
- LOG_RTE("Ignoring route %I/%d received from %I - %s",
- rte.prefix, rte.pxlen, from->nbr->addr, err_dsc);
+ LOG_RTE("Ignoring route %N received from %I - %s",
+ &rte.net, from->nbr->addr, err_dsc);
}
}
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index c85fd69b..d8c3b6a8 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -92,15 +92,6 @@ static void rip_trigger_update(struct rip_proto *p);
* RIP routes
*/
-static void
-rip_init_entry(struct fib_node *fn)
-{
- // struct rip_entry *en = (void) *fn;
-
- const uint offset = OFFSETOF(struct rip_entry, routes);
- memset((byte *)fn + offset, 0, sizeof(struct rip_entry) - offset);
-}
-
static struct rip_rte *
rip_add_rte(struct rip_proto *p, struct rip_rte **rp, struct rip_rte *src)
{
@@ -152,7 +143,7 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
if (rt)
{
/* Update */
- net *n = net_get(p->p.table, en->n.prefix, en->n.pxlen);
+ net *n = net_get(p->p.table, en->n.addr);
rta a0 = {
.src = p->p.main_source,
@@ -221,7 +212,7 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
else
{
/* Withdraw */
- net *n = net_find(p->p.table, en->n.prefix, en->n.pxlen);
+ net *n = net_find(p->p.table, en->n.addr);
rte_update(&p->p, n, NULL);
}
}
@@ -229,8 +220,7 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
/**
* rip_update_rte - enter a route update to RIP routing table
* @p: RIP instance
- * @prefix: network prefix
- * @pxlen: network prefix length
+ * @addr: network address
* @new: a &rip_rte representing the new route
*
* The function is called by the RIP packet processing code whenever it receives
@@ -240,9 +230,9 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
* rip_withdraw_rte() should be called instead of rip_update_rte().
*/
void
-rip_update_rte(struct rip_proto *p, ip_addr *prefix, int pxlen, struct rip_rte *new)
+rip_update_rte(struct rip_proto *p, net_addr *n, struct rip_rte *new)
{
- struct rip_entry *en = fib_get(&p->rtable, prefix, pxlen);
+ struct rip_entry *en = fib_get(&p->rtable, n);
struct rip_rte *rt, **rp;
int changed = 0;
@@ -282,8 +272,7 @@ rip_update_rte(struct rip_proto *p, ip_addr *prefix, int pxlen, struct rip_rte *
/**
* rip_withdraw_rte - enter a route withdraw to RIP routing table
* @p: RIP instance
- * @prefix: network prefix
- * @pxlen: network prefix length
+ * @addr: network address
* @from: a &rip_neighbor propagating the withdraw
*
* The function is called by the RIP packet processing code whenever it receives
@@ -291,9 +280,9 @@ rip_update_rte(struct rip_proto *p, ip_addr *prefix, int pxlen, struct rip_rte *
* removed. Eventually, the change is also propagated by rip_announce_rte().
*/
void
-rip_withdraw_rte(struct rip_proto *p, ip_addr *prefix, int pxlen, struct rip_neighbor *from)
+rip_withdraw_rte(struct rip_proto *p, net_addr *n, struct rip_neighbor *from)
{
- struct rip_entry *en = fib_find(&p->rtable, prefix, pxlen);
+ struct rip_entry *en = fib_find(&p->rtable, n);
struct rip_rte *rt, **rp;
if (!en)
@@ -335,15 +324,15 @@ rip_rt_notify(struct proto *P, struct rtable *table UNUSED, struct network *net,
if (rt_metric > p->infinity)
{
- log(L_WARN "%s: Invalid rip_metric value %u for route %I/%d",
- p->p.name, rt_metric, net->n.prefix, net->n.pxlen);
+ log(L_WARN "%s: Invalid rip_metric value %u for route %N",
+ p->p.name, rt_metric, net->n.addr);
rt_metric = p->infinity;
}
if (rt_tag > 0xffff)
{
- log(L_WARN "%s: Invalid rip_tag value %u for route %I/%d",
- p->p.name, rt_tag, net->n.prefix, net->n.pxlen);
+ log(L_WARN "%s: Invalid rip_tag value %u for route %N",
+ p->p.name, rt_tag, net->n.addr);
rt_metric = p->infinity;
rt_tag = 0;
}
@@ -355,7 +344,7 @@ rip_rt_notify(struct proto *P, struct rtable *table UNUSED, struct network *net,
* collection.
*/
- en = fib_get(&p->rtable, &net->n.prefix, net->n.pxlen);
+ en = fib_get(&p->rtable, net->n.addr);
old_metric = en->valid ? en->metric : -1;
@@ -369,7 +358,7 @@ rip_rt_notify(struct proto *P, struct rtable *table UNUSED, struct network *net,
else
{
/* Withdraw */
- en = fib_find(&p->rtable, &net->n.prefix, net->n.pxlen);
+ en = fib_find(&p->rtable, net->n.addr);
if (!en || en->valid != RIP_ENTRY_VALID)
return;
@@ -875,7 +864,7 @@ rip_timer(timer *t)
if (expires <= now)
{
- // TRACE(D_EVENTS, "entry is too old: %I/%d", en->n.prefix, en->n.pxlen);
+ // TRACE(D_EVENTS, "entry is too old: %N", en->n.addr);
en->valid = 0;
}
else
@@ -1108,7 +1097,8 @@ rip_start(struct proto *P)
struct rip_config *cf = (void *) (P->cf);
init_list(&p->iface_list);
- fib_init(&p->rtable, P->pool, sizeof(struct rip_entry), 0, rip_init_entry);
+ fib_init(&p->rtable, P->pool, rip_is_v2(p) ? NET_IP4 : NET_IP6,
+ sizeof(struct rip_entry), OFFSETOF(struct rip_entry, n), 0, NULL);
p->rte_slab = sl_new(P->pool, sizeof(struct rip_rte));
p->timer = tm_new_set(P->pool, rip_timer, p, 0, 0);
@@ -1257,8 +1247,8 @@ rip_dump(struct proto *P)
FIB_WALK(&p->rtable, e)
{
struct rip_entry *en = (struct rip_entry *) e;
- debug("RIP: entry #%d: %I/%d via %I dev %s valid %d metric %d age %d s\n",
- i++, en->n.prefix, en->n.pxlen, en->next_hop, en->iface->name,
+ debug("RIP: entry #%d: %N via %I dev %s valid %d metric %d age %d s\n",
+ i++, en->n.addr, en->next_hop, en->iface->name,
en->valid, en->metric, now - en->changed);
}
FIB_WALK_END;
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index f245e612..97c5ab3f 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -149,7 +149,6 @@ struct rip_neighbor
struct rip_entry
{
- struct fib_node n;
struct rip_rte *routes; /* List of incoming routes */
u8 valid; /* Entry validity state (RIP_ENTRY_*) */
@@ -160,6 +159,8 @@ struct rip_entry
ip_addr next_hop; /* Outgoing route next hop */
bird_clock_t changed; /* Last time when the outgoing route metric changed */
+
+ struct fib_node n;
};
struct rip_rte
@@ -211,8 +212,8 @@ rip_reset_tx_session(struct rip_proto *p, struct rip_iface *ifa)
}
/* rip.c */
-void rip_update_rte(struct rip_proto *p, ip_addr *prefix, int pxlen, struct rip_rte *new);
-void rip_withdraw_rte(struct rip_proto *p, ip_addr *prefix, int pxlen, struct rip_neighbor *from);
+void rip_update_rte(struct rip_proto *p, net_addr *n, struct rip_rte *new);
+void rip_withdraw_rte(struct rip_proto *p, net_addr *n, struct rip_neighbor *from);
struct rip_neighbor * rip_get_neighbor(struct rip_proto *p, ip_addr *a, struct rip_iface *ifa);
void rip_update_bfd(struct rip_proto *p, struct rip_neighbor *n);
void rip_show_interfaces(struct proto *P, char *iff);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 20:49:28 +0000