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authorPavel Machek <pavel@ucw.cz>1998-12-09 16:22:40 +0100
committerPavel Machek <pavel@ucw.cz>1998-12-09 16:22:40 +0100
commit06fa1453cdc419acd0c037ac82f49b4d8e77cfbd (patch)
tree16ca15486e28c0b4ec512947d3180c4a79acaa0b /proto/rip/rip.c
parent8e66a0ebb927f40c9fcb48bbf5f2d811d7b7c7f3 (diff)
downloadbird-06fa1453cdc419acd0c037ac82f49b4d8e77cfbd.tar
bird-06fa1453cdc419acd0c037ac82f49b4d8e77cfbd.zip
Initial multicast support (can not work, but skeleton is there)
Diffstat (limited to 'proto/rip/rip.c')
-rw-r--r--proto/rip/rip.c85
1 files changed, 49 insertions, 36 deletions
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 8a738f9..535bc11 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -313,6 +313,7 @@ rip_process_packet( struct proto *p, struct rip_packet *packet, int num, ip_addr
switch( packet->heading.command ) {
case RIPCMD_REQUEST: debug( "Asked to send my routing table\n" );
+ /* FIXME: should have configurable: ignore always, honour to neighbours, honour always. FIXME: use one global socket for these. FIXME: synchronization - if two ask me at same time */
rip_sendto( p, whotoldme, port, NULL ); /* no broadcast */
break;
case RIPCMD_RESPONSE: debug( "*** Rtable from %I\n", whotoldme );
@@ -473,7 +474,7 @@ rip_dump(struct proto *p)
}
i = 0;
WALK_LIST( rif, P->interfaces ) {
- debug( "RIP: interface #%d: %s, %I, busy = %x\n", i++, rif->iface->name, rif->sock->daddr, rif->busy );
+ debug( "RIP: interface #%d: %s, %I, busy = %x\n", i++, rif->iface?rif->iface->name:"(dummy)", rif->sock->daddr, rif->busy );
}
}
@@ -491,40 +492,50 @@ kill_iface(struct proto *p, struct rip_interface *i)
mb_free(i);
}
+/*
+ * new maybe null if we are creating initial send socket
+ */
struct rip_interface *
-new_iface(struct proto *p, struct iface *new)
+new_iface(struct proto *p, struct iface *new, unsigned long flags)
{
- struct rip_interface *i;
- debug( "RIP: New interface %s here\n", new->name);
- i = mb_alloc(p->pool, sizeof( struct rip_interface ));
- i->iface = new;
- i->proto = p;
-
- i->sock = sk_new( p->pool );
- i->sock->type = SK_UDP;
- i->sock->sport = P->port;
- i->sock->rx_hook = rip_rx;
- i->sock->data = i;
- i->sock->rbsize = 10240;
- i->sock->iface = new;
- i->sock->tbuf = mb_alloc( p->pool, sizeof( struct rip_packet ));
- i->sock->tx_hook = rip_tx;
- i->sock->err_hook = rip_tx_err;
- i->sock->daddr = IPA_NONE;
- i->sock->dport = P->port;
-
- if (new->flags & IF_BROADCAST)
- i->sock->daddr = new->brd;
- if (new->flags & IF_UNNUMBERED)
- i->sock->daddr = new->opposite;
-
- if (!ipa_nonzero(i->sock->daddr))
- log( L_WARN "RIP: interface %s is too strange for me", i->iface->name );
-
- if (sk_open(i->sock)<0)
- die( "RIP/%s: could not listen on %s\n", p->name, i->iface->name );
+ struct rip_interface *rif;
+ int want_multicast;
+
+ rif = mb_alloc(p->pool, sizeof( struct rip_interface ));
+ rif->iface = new;
+ rif->proto = p;
+
+ want_multicast = 0 && (flags & IF_MULTICAST);
+ /* FIXME: should have config option to disable this one */
+
+ rif->sock = sk_new( p->pool );
+ rif->sock->type = want_multicast?SK_UDP_MC:SK_UDP;
+ rif->sock->sport = P->port;
+ rif->sock->rx_hook = rip_rx;
+ rif->sock->data = rif;
+ rif->sock->rbsize = 10240;
+ rif->sock->iface = new;
+ rif->sock->tbuf = mb_alloc( p->pool, sizeof( struct rip_packet ));
+ rif->sock->tx_hook = rip_tx;
+ rif->sock->err_hook = rip_tx_err;
+ rif->sock->daddr = IPA_NONE;
+ rif->sock->dport = P->port;
+ rif->sock->ttl = 1; /* FIXME: care must be taken not to send requested responses from this socket */
+
+ if (want_multicast)
+ rif->sock->daddr = ipa_from_u32(0x7f000001); /* FIXME: must lookup address in rfc's */
+ if (flags & IF_BROADCAST)
+ rif->sock->daddr = new->brd;
+ if (flags & IF_UNNUMBERED)
+ rif->sock->daddr = new->opposite;
+
+ if (!ipa_nonzero(rif->sock->daddr))
+ log( L_WARN "RIP: interface %s is too strange for me", rif->iface->name );
+
+ if (sk_open(rif->sock)<0)
+ die( "RIP/%s: could not listen on %s\n", p->name, rif->iface->name );
- return i;
+ return rif;
}
static void
@@ -540,13 +551,14 @@ rip_if_notify(struct proto *p, unsigned c, struct iface *old, struct iface *new)
}
}
if (new) {
- struct rip_interface *i;
+ struct rip_interface *rif;
struct iface_patt *k = iface_patt_match(&P->iface_list, new);
if (!k) return; /* We are not interested in this interface */
- i = new_iface(p, new);
- i->metric = k->u.rip.metric;
- add_head( &P->interfaces, NODE i );
+ DBG("adding interface %s\n", new->name );
+ rif = new_iface(p, new, new->flags);
+ rif->metric = k->u.rip.metric;
+ add_head( &P->interfaces, NODE rif );
}
}
@@ -647,6 +659,7 @@ rip_preconfig(struct protocol *x)
static void
rip_postconfig(struct protocol *p)
{
+ new_iface(p, NULL, 0);
}
struct protocol proto_rip = {