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-rw-r--r--nest/route.h1
-rw-r--r--proto/rip/rip.c85
-rw-r--r--proto/rip/rip.h1
3 files changed, 66 insertions, 21 deletions
diff --git a/nest/route.h b/nest/route.h
index d3a1304..3329303 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -98,6 +98,7 @@ typedef struct rte {
#endif
#ifdef CONFIG_RIP
struct {
+ node garbage; /* List for garbage collection */
byte metric; /* RIP metric */
u16 tag; /* External route tag */
} rip;
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 3289717..173b701 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -30,6 +30,9 @@ int infinity = 16;
/* FIXME: should be 30 */
#define RIP_TIME 5
+/* FIXME: should be 120+180 */
+#define RIP_GB_TIME 30
+
static void
rip_reply(struct proto *p)
{
@@ -148,7 +151,7 @@ givemore:
packet->block[i].network = c->sendptr->network;
packet->block[i].netmask = ipa_mkmask( c->sendptr->pxlen );
packet->block[i].nexthop = IPA_NONE; /* FIXME: How should I set it? */
- packet->block[i].metric = htonl( c->sendptr->metric );
+ packet->block[i].metric = htonl( c->sendptr->metric?:1 );
if (ipa_equal(c->sendptr->whotoldme, s->daddr)) {
debug( "(split horizont)" );
/* FIXME: should we do it in all cases? */
@@ -174,7 +177,7 @@ givemore:
}
static void
-rip_sendto( struct proto *p, ip_addr daddr, int dport )
+rip_sendto( struct proto *p, ip_addr daddr, int dport, struct iface *iface )
{
struct rip_connection *c = mb_alloc( p->pool, sizeof( struct rip_connection ));
static int num = 0;
@@ -192,6 +195,7 @@ rip_sendto( struct proto *p, ip_addr daddr, int dport )
c->send->tx_hook = rip_tx;
c->send->err_hook = rip_tx_err;
c->send->data = c;
+ c->send->iface = iface;
c->send->tbuf = mb_alloc( p->pool, sizeof( struct rip_packet ));
if (sk_open(c->send)<0) {
log( L_ERR "Could not open socket for data send to %I:%d\n", daddr, dport );
@@ -223,6 +227,7 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme )
rta *a, A;
rte *r;
net *n;
+ neighbor *neighbor;
debug( "rip: Advertising entry..." );
bzero(&A, sizeof(A));
@@ -235,13 +240,21 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme )
A.flags = 0;
A.gw = ipa_nonzero(b->nexthop) ? b->nexthop : whotoldme;
A.from = whotoldme;
- A.iface = /* FIXME: need to set somehow */ NULL;
+
+ neighbor = neigh_find( p, &A.gw, 0 );
+ if (!neighbor) {
+ log( L_ERR "%I asked me to route %I/%I using not-neighbor %I.\n", A.from, b->network, b->netmask, A.gw );
+ return;
+ }
+
+ A.iface = neighbor->iface;
/* set to: interface of nexthop */
a = rta_lookup(&A);
n = net_get( &master_table, 0, b->network, ipa_mklen( b->netmask )); /* FIXME: should verify that it really is netmask */
r = rte_get_temp(a);
r->u.rip.metric = ntohl(b->metric);
r->u.rip.tag = ntohl(b->tag);
+ r->net = n;
r->pflags = 0; /* Here go my flags */
rte_update( n, p, r );
debug( "done\n" );
@@ -287,7 +300,7 @@ 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" );
- rip_sendto( p, whotoldme, port );
+ rip_sendto( p, whotoldme, port, NULL ); /* no broadcast */
break;
case RIPCMD_RESPONSE: debug( "Part of routing table came\n" );
if (port != RIP_PORT) {
@@ -368,25 +381,38 @@ rip_timer(timer *t)
CHK_MAGIC;
debug( "RIP: tick tock\n" );
-
-#if 0
- /* This needs to be completely redone. We need garbage collecting based on main routing table, not on our copy */
- WALK_LIST_DELSAFE( e, et, P->rtable ) {
- if (!(E->flags & RIP_F_EXTERNAL))
- if ((now - E->updated) > (180+120)) {
- debug( "RIP: entry is too old: " );
- rip_dump_entry( E );
- kill_entry( p, E );
- }
+
+ WALK_LIST_DELSAFE( e, et, P->garbage ) {
+ rte *rte;
+ rte = SKIP_BACK( struct rte, u.rip.garbage, e );
+ debug( "Garbage: " ); rte_dump( rte );
+
+ if (now - rte->lastmod > (RIP_GB_TIME)) {
+ debug( "RIP: entry is too old: " ); rte_dump( rte );
+ rte_discard(rte);
+ }
}
-#endif
-#if 0
debug( "RIP: Broadcasting routing tables\n" );
- rip_sendto( p, _MI( 0x0a000001 ), RIP_PORT );
-#endif
+ {
+ struct iface *iface;
- /* FIXME: Should broadcast routing tables to all known interfaces every 30 seconds */
+ /* FIXME: needs to be configured */
+ WALK_LIST( iface, iface_list ) {
+ if (!(iface->flags & IF_UP)) continue;
+ if (iface->flags & (IF_IGNORE | IF_LOOPBACK)) continue;
+
+ if (iface->flags & IF_BROADCAST) {
+ rip_sendto( p, iface->brd, RIP_PORT, iface );
+ continue;
+ }
+ if (iface->flags & IF_UNNUMBERED) {
+ rip_sendto( p, iface->opposite, RIP_PORT, NULL );
+ continue;
+ }
+ debug( "RIP/send: can not happen\n" );
+ }
+ }
debug( "RIP: tick tock done\n" );
}
@@ -407,6 +433,7 @@ rip_start(struct proto *p)
die( "RIP/%s: could not listen\n", p->name );
init_list( &P->rtable );
init_list( &P->connections );
+ init_list( &P->garbage );
P->timer = tm_new( p->pool );
P->timer->data = p;
P->timer->randomize = 5;
@@ -479,7 +506,7 @@ rip_rt_notify(struct proto *p, struct network *net, struct rte *new, struct rte
}
}
-static int /* FIXME: should not they pass me struct proto * ? */
+static int
rip_rte_better(struct rte *new, struct rte *old)
{
if (old->u.rip.metric < new->u.rip.metric)
@@ -504,17 +531,33 @@ rip_rta_same(rta *a, rta *b)
}
static void
+rip_rte_insert(net *net, rte *rte)
+{
+ struct proto *p = rte->attrs->proto;
+ add_head( &P->garbage, &rte->u.rip.garbage );
+}
+
+static void
+rip_rte_remove(net *net, rte *rte)
+{
+ struct proto *p = rte->attrs->proto;
+ rem_node( &rte->u.rip.garbage );
+}
+
+static void
rip_preconfig(struct protocol *x)
{
struct proto *p = proto_new(&proto_rip, sizeof(struct rip_data));
debug( "RIP: preconfig\n" );
- p->preference = DEF_PREF_DIRECT;
+ p->preference = DEF_PREF_RIP;
p->start = rip_start;
p->if_notify = rip_if_notify;
p->rt_notify = rip_rt_notify;
p->rte_better = rip_rte_better;
p->rta_same = rip_rta_same;
+ p->rte_insert = rip_rte_insert;
+ p->rte_remove = rip_rte_remove;
p->dump = rip_dump;
}
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index 5d78b2e..fd637dc 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -60,6 +60,7 @@ struct rip_data {
timer *timer;
list connections;
list rtable;
+ list garbage;
int magic;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 23:30:53 +0100