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-rw-r--r--doc/bird.conf.example1
-rw-r--r--doc/bird.sgml6
-rw-r--r--proto/ospf/config.Y4
-rw-r--r--proto/ospf/iface.c97
-rw-r--r--proto/ospf/iface.h6
-rw-r--r--proto/ospf/ospf.c12
-rw-r--r--proto/ospf/ospf.h15
7 files changed, 94 insertions, 47 deletions
diff --git a/doc/bird.conf.example b/doc/bird.conf.example
index 8260c02..05259d5 100644
--- a/doc/bird.conf.example
+++ b/doc/bird.conf.example
@@ -120,6 +120,7 @@ protocol static {
# password "pass";
# };
# interface "arc0" {
+# rx buffer large;
# type nonbroadcast;
# poll 14;
# dead 75;
diff --git a/doc/bird.sgml b/doc/bird.sgml
index fa7aabb..87113fa 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1026,6 +1026,7 @@ protocol ospf <name> {
wait <num>;
dead count <num>;
dead <num>;
+ rx buffer [normal|large|<num>];
type [broadcast|nonbroadcast|pointopoint];
strict nonbroadcast <switch>;
authentication [none|simple];
@@ -1134,6 +1135,11 @@ protocol ospf <name> {
<m/dead/ seconds, it will consider the neighbor down. If both directives
<m/dead count/ and <m/dead/ are used, <m/dead/ has precendence.
+ <tag>rx buffer <M>num</M></tag>
+ This sets the size of buffer used for receiving packets. The buffer should
+ be bigger than maximal size of any packets. Value NORMAL (default)
+ means 2*MTU, value LARGE means maximal allowed packet - 65536.
+
<tag>type broadcast</tag>
BIRD detects a type of a connected network automatically, but sometimes it's
convenient to force use of a different type manually.
diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y
index f14f1a4..0c6a408 100644
--- a/proto/ospf/config.Y
+++ b/proto/ospf/config.Y
@@ -26,6 +26,7 @@ CF_KEYWORDS(NEIGHBORS, RFC1583COMPAT, STUB, TICK, COST, RETRANSMIT)
CF_KEYWORDS(HELLO, TRANSMIT, PRIORITY, DEAD, NONBROADCAST, POINTOPOINT, TYPE)
CF_KEYWORDS(NONE, SIMPLE, AUTHENTICATION, STRICT, CRYPTOGRAPHIC)
CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, LINK)
+CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL)
%type <t> opttext
@@ -142,6 +143,9 @@ ospf_iface_item:
| AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
| AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
| AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
+ | RX BUFFER LARGE { OSPF_PATT->rxbuf = OSPF_RXBUF_LARGE ; }
+ | RX BUFFER NORMAL { OSPF_PATT->rxbuf = OSPF_RXBUF_NORMAL ; }
+ | RX BUFFER expr { OSPF_PATT->rxbuf = $3 ; if ($3 < OSPF_RXBUF_MINSIZE) cf_error("Buffer size is too small") ; }
| password_list {OSPF_PATT->passwords = (list *) $1; }
;
diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index 3306285..d5d068b 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -41,6 +41,23 @@ wait_timer_hook(timer * timer)
ospf_iface_sm(ifa, ISM_WAITF);
}
+u32
+rxbufsize(struct ospf_iface *ifa)
+{
+ switch(ifa->rxbuf)
+ {
+ case OSPF_RXBUF_NORMAL:
+ return (ifa->iface->mtu * 2);
+ break;
+ case OSPF_RXBUF_LARGE:
+ return OSPF_MAX_PKT_SIZE;
+ break;
+ default:
+ return ifa->rxbuf;
+ break;
+ }
+}
+
static sock *
ospf_open_ip_socket(struct ospf_iface *ifa)
{
@@ -59,7 +76,7 @@ ospf_open_ip_socket(struct ospf_iface *ifa)
ipsk->tx_hook = ospf_tx_hook;
ipsk->err_hook = ospf_err_hook;
ipsk->iface = ifa->iface;
- ipsk->rbsize = OSPF_MAX_PKT_SIZE;
+ ipsk->rbsize = rxbufsize(ifa);
ipsk->tbsize = ifa->iface->mtu;
ipsk->data = (void *) ifa;
if (sk_open(ipsk) != 0)
@@ -126,7 +143,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
ifa->dr_sk->tx_hook = ospf_tx_hook;
ifa->dr_sk->err_hook = ospf_err_hook;
ifa->dr_sk->iface = ifa->iface;
- ifa->dr_sk->rbsize = OSPF_MAX_PKT_SIZE;
+ ifa->dr_sk->rbsize = rxbufsize(ifa);
ifa->dr_sk->tbsize = ifa->iface->mtu;
ifa->dr_sk->data = (void *) ifa;
if (sk_open(ifa->dr_sk) != 0)
@@ -299,7 +316,7 @@ ospf_open_mc_socket(struct ospf_iface *ifa)
mcsk->tx_hook = ospf_tx_hook;
mcsk->err_hook = ospf_err_hook;
mcsk->iface = ifa->iface;
- mcsk->rbsize = OSPF_MAX_PKT_SIZE;
+ mcsk->rbsize = rxbufsize(ifa);
mcsk->tbsize = ifa->iface->mtu;
mcsk->data = (void *) ifa;
if (sk_open(mcsk) != 0)
@@ -397,6 +414,7 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface,
ifa->stub = ip->stub;
ifa->autype = ip->autype;
ifa->passwords = ip->passwords;
+ ifa->rxbuf = ip->rxbuf;
if (ip->type == OSPF_IT_UNDEF)
ifa->type = ospf_iface_clasify(ifa->iface);
@@ -477,6 +495,44 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface,
}
void
+ospf_iface_change_mtu(struct proto_ospf *po, struct ospf_iface *ifa)
+{
+ struct proto *p = &po->proto;
+ struct ospf_packet *op;
+ struct ospf_neighbor *n;
+ OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s.", ifa->iface->name);
+ if (ifa->hello_sk)
+ {
+ ifa->hello_sk->rbsize = rxbufsize(ifa);
+ ifa->hello_sk->tbsize = ifa->iface->mtu;
+ sk_reallocate(ifa->hello_sk);
+ }
+ if (ifa->dr_sk)
+ {
+ ifa->dr_sk->rbsize = rxbufsize(ifa);
+ ifa->dr_sk->tbsize = ifa->iface->mtu;
+ sk_reallocate(ifa->dr_sk);
+ }
+ if (ifa->ip_sk)
+ {
+ ifa->ip_sk->rbsize = rxbufsize(ifa);
+ ifa->ip_sk->tbsize = ifa->iface->mtu;
+ sk_reallocate(ifa->ip_sk);
+ }
+
+ WALK_LIST(n, ifa->neigh_list)
+ {
+ op = (struct ospf_packet *) n->ldbdes;
+ n->ldbdes = mb_allocz(n->pool, ifa->iface->mtu);
+
+ if (ntohs(op->length) <= ifa->iface->mtu) /* If the packet in old buffer is bigger, let it filled by zeros */
+ memcpy(n->ldbdes, op, ifa->iface->mtu); /* If the packet is old is same or smaller, copy it */
+
+ rfree(op);
+ }
+}
+
+void
ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface)
{
struct proto_ospf *po = (struct proto_ospf *) p;
@@ -517,40 +573,7 @@ ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface)
if (flags & IF_CHANGE_MTU)
{
if ((ifa = ospf_iface_find((struct proto_ospf *) p, iface)) != NULL)
- {
- struct ospf_packet *op;
- struct ospf_neighbor *n;
- OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s.", iface->name);
- if (ifa->hello_sk)
- {
- ifa->hello_sk->rbsize = OSPF_MAX_PKT_SIZE;
- ifa->hello_sk->tbsize = ifa->iface->mtu;
- sk_reallocate(ifa->hello_sk);
- }
- if (ifa->dr_sk)
- {
- ifa->dr_sk->rbsize = OSPF_MAX_PKT_SIZE;
- ifa->dr_sk->tbsize = ifa->iface->mtu;
- sk_reallocate(ifa->dr_sk);
- }
- if (ifa->ip_sk)
- {
- ifa->ip_sk->rbsize = OSPF_MAX_PKT_SIZE;
- ifa->ip_sk->tbsize = ifa->iface->mtu;
- sk_reallocate(ifa->ip_sk);
- }
-
- WALK_LIST(n, ifa->neigh_list)
- {
- op = (struct ospf_packet *) n->ldbdes;
- n->ldbdes = mb_allocz(n->pool, iface->mtu);
-
- if (ntohs(op->length) <= iface->mtu) /* If the packet in old buffer is bigger, let it filled by zeros */
- memcpy(n->ldbdes, op, iface->mtu); /* If the packet is old is same or smaller, copy it */
-
- rfree(op);
- }
- }
+ ospf_iface_change_mtu(po, ifa);
}
}
diff --git a/proto/ospf/iface.h b/proto/ospf/iface.h
index 556024b..55c64bf 100644
--- a/proto/ospf/iface.h
+++ b/proto/ospf/iface.h
@@ -1,7 +1,7 @@
/*
* BIRD -- OSPF
*
- * (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
+ * (c) 1999--2005 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*
@@ -17,5 +17,9 @@ void ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface);
void ospf_iface_info(struct ospf_iface *ifa);
void ospf_iface_shutdown(struct ospf_iface *ifa);
void ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ospf_area_config *ac, struct ospf_iface_patt *ip);
+void ospf_iface_change_mtu(struct proto_ospf *po, struct ospf_iface *ifa);
+void ospf_set_rxbuf_size(struct ospf_iface *ifa, u32 rxbuf);
+
+
#endif /* _BIRD_OSPF_IFACE_H_ */
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index f66dbad..b382df0 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -637,7 +637,7 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
{
/* Now reconfigure interface */
if (!(newip = (struct ospf_iface_patt *)
- iface_patt_match(&oldac->patt_list, ifa->iface)))
+ iface_patt_match(&newac->patt_list, ifa->iface)))
return 0;
/* HELLO TIMER */
@@ -672,6 +672,16 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
schedule_rt_lsa(ifa->oa);
}
+ /* RX BUFF */
+ if (oldip->rxbuf != newip->rxbuf)
+ {
+ ifa->rxbuf = newip->rxbuf;
+ OSPF_TRACE(D_EVENTS,
+ "Changing rxbuf interface %s from %d to %d",
+ ifa->iface->name, oldip->rxbuf, newip->rxbuf);
+ ospf_iface_change_mtu(po, ifa);
+ }
+
/* strict nbma */
if ((oldip->strictnbma == 0) && (newip->strictnbma != 0))
{
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 1bb7f87..fcefa81 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -11,19 +11,13 @@
#define MAXNETS 10
#define OSPF_VLINK_MTU 576 /* RFC2328 - A.1 */
-#undef OSPF_BIG_PACKETS /*
+#define OSPF_MAX_PKT_SIZE 65536
+ /*
* RFC 2328 says, maximum packet size is 65535
* This could be too much for small systems, so I
* normally allocate 2*mtu - (I found one cisco
* sending packets mtu+16)
*/
-
-#ifdef OSPF_BIG_PACKETS
-#define OSPF_MAX_PKT_SIZE 65536
-#else
-#define OSPF_MAX_PKT_SIZE (ifa->iface->mtu * 2)
-#endif
-
#ifdef LOCAL_DEBUG
#define OSPF_FORCE_DEBUG 1
#else
@@ -206,6 +200,7 @@ struct ospf_iface
list nbma_list;
u8 priority; /* A router priority for DR election */
u8 ioprob;
+ u32 rxbuf;
};
struct ospf_md5
@@ -572,6 +567,10 @@ struct ospf_iface_patt
#define OSPF_AUTH_SIMPLE 1
#define OSPF_AUTH_CRYPT 2
#define OSPF_AUTH_CRYPT_SIZE 16
+ u32 rxbuf;
+#define OSPF_RXBUF_NORMAL 0
+#define OSPF_RXBUF_LARGE 1
+#define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */
list *passwords;
list nbma_list;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 06:45:32 +0100