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-rw-r--r--proto/rip/config.Y8
-rw-r--r--proto/rip/rip.c218
-rw-r--r--proto/rip/rip.h12
3 files changed, 96 insertions, 142 deletions
diff --git a/proto/rip/config.Y b/proto/rip/config.Y
index 33be05e..6556560 100644
--- a/proto/rip/config.Y
+++ b/proto/rip/config.Y
@@ -4,6 +4,14 @@
* Can be freely distributed and used under the terms of the GNU GPL.
*/
+/*
+To add:
+
+passive option (== do not send routing updates to this interface)
+
+
+
+
CF_HDR
#include "proto/rip/rip.h"
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 059517c..2ca1e1e 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -32,73 +32,6 @@ rip_reply(struct proto *p)
}
/*
- * Entries
- */
-
-static struct rip_entry *
-new_entry( struct proto *p )
-{
- struct rip_entry *e;
- e = mb_alloc(p->pool, sizeof( struct rip_entry ));
- bzero( e, sizeof( struct rip_entry ));
- return e;
-}
-
-static struct rip_entry *
-find_entry( struct proto *p, ip_addr network, int pxlen )
-{
- struct node *e;
-
- CHK_MAGIC;
- WALK_LIST( e, P->rtable ) {
- if (ipa_equal( network, E->network ) &&
- (pxlen == E->pxlen)) {
- return E;
- }
- }
- return NULL;
-}
-
-/* Delete one of entries */
-static void
-kill_entry_ourrt( struct proto *p, struct rip_entry *e )
-{
- struct rip_connection *c;
- net *n;
-
- rem_node( NODE e );
- WALK_LIST( c, P->connections ) {
- if (c->sendptr == e) {
- DBG( "Deleting from under someone's sendptr...\n" );
- c->sendptr = (void *) (NODE c->sendptr)->next;
- }
- }
- mb_free( e );
-}
-
-#if 0
-/* Currently unreferenced, and likely may stay that way */
-/* Delete one of entries */
-static void
-kill_entry_mainrt( struct proto *p, struct rip_entry *e )
-{
- struct rip_connection *c;
- net *n;
-
- n = net_find(&master_table, 0, e->network, e->pxlen );
- if (!n) log( L_ERR "Could not find entry to delete in main routing table." );
- else rte_update( n, p, NULL );
-}
-
-static void
-kill_entry( struct proto *p, struct rip_entry *e )
-{
- kill_entry_mainrt( p, e );
- kill_entry_ourrt( p, e );
-}
-#endif
-
-/*
* Output processing
*/
@@ -117,59 +50,70 @@ rip_tx( sock *s )
struct rip_connection *c = rif->busy;
struct proto *p = c->proto;
struct rip_packet *packet = (void *) s->tbuf;
- int i, done = 0;
-
-givemore:
+ int i;
- DBG( "Preparing packet to send: " );
+ do {
- if (!(NODE c->sendptr)->next) {
- DBG( "Looks like I'm" );
- c->rif->busy = NULL;
- rem_node(NODE c);
- mb_free(c);
- DBG( " done\n" );
- return;
- }
-
- packet->heading.command = RIPCMD_RESPONSE;
- packet->heading.version = RIP_V2;
- packet->heading.unused = 0;
-
- for (i = 0; i < 25; i++) {
- if (!(NODE c->sendptr)->next)
- break;
- DBG( "." );
- packet->block[i].family = htons( 2 ); /* AF_INET */
- packet->block[i].tag = htons( 0 ); /* FIXME: What should I set it to? */
- 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( 1+ (c->sendptr->metric?:1) );
- if (ipa_equal(c->sendptr->whotoldme, s->daddr)) {
- DBG( "(split horizont)" );
- /* FIXME: should we do it in all cases? */
- packet->block[i].metric = P->infinity;
+ if (c->done) {
+ DBG( "Looks like I'm" );
+ c->rif->busy = NULL;
+ rem_node(NODE c);
+ mb_free(c);
+ DBG( " done\n" );
+ return;
}
- ipa_hton( packet->block[i].network );
- ipa_hton( packet->block[i].netmask );
- ipa_hton( packet->block[i].nexthop );
- c->sendptr = (void *) (NODE c->sendptr)->next;
- }
+ if (c->done) {
+ DBG( "looks like I'm done!\n" );
+ return;
+ }
- DBG( ", sending %d blocks, ", i );
+ DBG( "Preparing packet to send: " );
+
+ packet->heading.command = RIPCMD_RESPONSE;
+ packet->heading.version = RIP_V2;
+ packet->heading.unused = 0;
+
+ i = 0;
+ FIB_ITERATE_START(&P->rtable, &c->iter, z) {
+ struct rip_entry *e = (struct rip_entry *) z;
+ DBG( "." );
+ packet->block[i].family = htons( 2 ); /* AF_INET */
+ packet->block[i].tag = htons( 0 ); /* FIXME: What should I set it to? */
+ packet->block[i].network = e->n.prefix;
+ packet->block[i].netmask = ipa_mkmask( e->n.pxlen );
+ packet->block[i].nexthop = IPA_NONE; /* FIXME: How should I set it? */
+ packet->block[i].metric = htonl( 1+ (e->metric?:1) );
+ if (ipa_equal(e->whotoldme, s->daddr)) {
+ DBG( "(split horizont)" );
+ /* FIXME: should we do it in all cases? */
+ packet->block[i].metric = P->infinity;
+ }
+ ipa_hton( packet->block[i].network );
+ ipa_hton( packet->block[i].netmask );
+ ipa_hton( packet->block[i].nexthop );
+
+ if (i++ == 25) {
+ FIB_ITERATE_PUT(&c->iter, z);
+ goto break_loop;
+ }
+ } FIB_ITERATE_END;
+ c->done = 1;
+
+ break_loop:
+
+ DBG( ", sending %d blocks, ", i );
+
+ if (ipa_nonzero(c->daddr))
+ i = sk_send_to( s, sizeof( struct rip_packet_heading ) + i*sizeof( struct rip_block ), c->daddr, c->dport );
+ else
+ i = sk_send( s, sizeof( struct rip_packet_heading ) + i*sizeof( struct rip_block ) );
- if (ipa_nonzero(c->daddr))
- i = sk_send_to( s, sizeof( struct rip_packet_heading ) + i*sizeof( struct rip_block ), c->daddr, c->dport );
- else
- i = sk_send( s, sizeof( struct rip_packet_heading ) + i*sizeof( struct rip_block ) );
- if (i<0) rip_tx_err( s, i );
- if (i>0) {
DBG( "it wants more\n" );
- goto givemore;
- }
+ } while (i>0);
+
+ if (i<0) rip_tx_err( s, i );
DBG( "blocked\n" );
}
@@ -202,7 +146,8 @@ rip_sendto( struct proto *p, ip_addr daddr, int dport, struct rip_interface *rif
}
#endif
- c->sendptr = HEAD( P->rtable );
+ c->done = 0;
+ fit_init( &c->iter, &P->rtable );
add_head( &P->connections, NODE c );
debug( "Sending my routing table to %I:%d on %s\n", daddr, dport, rif->iface->name );
@@ -385,7 +330,7 @@ static void
rip_dump_entry( struct rip_entry *e )
{
debug( "%I told me %d/%d ago: to %I/%d go via %I, metric %d ",
- e->whotoldme, e->updated-now, e->changed-now, e->network, e->pxlen, e->nexthop, e->metric );
+ e->whotoldme, e->updated-now, e->changed-now, e->n.prefix, e->n.pxlen, e->nexthop, e->metric );
if (e->flags & RIP_F_EXTERNAL) debug( "[external]" );
debug( "\n" );
}
@@ -412,15 +357,16 @@ rip_timer(timer *t)
DBG( "RIP: Broadcasting routing tables\n" );
{
- struct rip_interface *i;
+ struct rip_interface *rif;
- WALK_LIST( i, P->interfaces ) {
- struct iface *iface = i->iface;
+ WALK_LIST( rif, P->interfaces ) {
+ struct iface *iface = rif->iface;
+ if (!iface) continue;
if (!(iface->flags & IF_UP)) continue;
if (iface->flags & (IF_IGNORE | IF_LOOPBACK)) continue;
- rip_sendto( p, IPA_NONE, 0, i );
+ rip_sendto( p, IPA_NONE, 0, rif );
}
}
@@ -430,10 +376,11 @@ rip_timer(timer *t)
static void
rip_start(struct proto *p)
{
+ struct rip_interface *rif;
DBG( "RIP: starting instance...\n" );
P->magic = RIP_MAGIC;
- init_list( &P->rtable );
+ fib_init( &P->rtable, p->pool, sizeof( struct rip_entry ), 0, NULL );
init_list( &P->connections );
init_list( &P->garbage );
init_list( &P->interfaces );
@@ -443,6 +390,8 @@ rip_start(struct proto *p)
P->timer->recurrent = P->period;
P->timer->hook = rip_timer;
tm_start( P->timer, 5 );
+ rif = new_iface(p, NULL, 0); /* Initialize dummy interface */
+ add_head( &P->interfaces, NODE rif );
CHK_MAGIC;
DBG( "RIP: ...done\n");
@@ -466,10 +415,10 @@ rip_dump(struct proto *p)
debug( "RIP: connection #%d: %I\n", n->num, n->addr );
}
i = 0;
- WALK_LIST( e, P->rtable ) {
+ FIB_WALK( &P->rtable, e ) {
debug( "RIP: entry #%d: ", i++ );
rip_dump_entry( E );
- }
+ } FIB_WALK_END;
i = 0;
WALK_LIST( rif, P->interfaces ) {
debug( "RIP: interface #%d: %s, %I, busy = %x\n", i++, rif->iface?rif->iface->name:"(dummy)", rif->sock->daddr, rif->busy );
@@ -502,6 +451,7 @@ new_iface(struct proto *p, struct iface *new, unsigned long flags)
rif = mb_alloc(p->pool, sizeof( struct rip_interface ));
rif->iface = new;
rif->proto = p;
+ rif->busy = NULL;
want_multicast = 0 && (flags & IF_MULTICAST);
/* FIXME: should have config option to disable this one */
@@ -512,7 +462,7 @@ new_iface(struct proto *p, struct iface *new, unsigned long flags)
rif->sock->rx_hook = rip_rx;
rif->sock->data = rif;
rif->sock->rbsize = 10240;
- rif->sock->iface = new;
+ rif->sock->iface = new; /* Automagically works for dummy interface */
rif->sock->tbuf = mb_alloc( p->pool, sizeof( struct rip_packet ));
rif->sock->tx_hook = rip_tx;
rif->sock->err_hook = rip_tx_err;
@@ -528,10 +478,10 @@ new_iface(struct proto *p, struct iface *new, unsigned long flags)
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 );
+ log( L_WARN "RIP: interface %s is too strange for me", rif->iface ? rif->iface->name : "(dummy)" );
if (sk_open(rif->sock)<0)
- die( "RIP/%s: could not listen on %s", p->name, rif->iface->name );
+ die( "RIP/%s: could not listen on %s", p->name, rif->iface ? rif->iface->name : "(dummy)" );
/* FIXME: Should not be fatal, since the interface might have gone */
return rif;
@@ -567,27 +517,24 @@ rip_rt_notify(struct proto *p, struct network *net, struct rte *new, struct rte
CHK_MAGIC;
if (old) {
- struct rip_entry *e = find_entry( p, net->n.prefix, net->n.pxlen );
-
+ struct rip_entry *e = fib_find( &P->rtable, &net->n.prefix, net->n.pxlen );
if (!e)
- log( L_ERR "Deleting nonexistent entry?!" );
-
- kill_entry_ourrt( p, e );
+ log( L_BUG "Deleting nonexistent entry?!" );
+ fib_delete( &P->rtable, e );
}
if (new) {
- struct rip_entry *e = new_entry( p );
+ struct rip_entry *e;
+ if (fib_find( &P->rtable, &net->n.prefix, net->n.pxlen ))
+ log( L_BUG "Inserting entry which is already there?" );
+ e = fib_get( &P->rtable, &net->n.prefix, net->n.pxlen );
- e->network = net->n.prefix;
- e->pxlen = net->n.pxlen;
e->nexthop = new->attrs->gw;
e->tag = new->u.rip.tag;
e->metric = new->u.rip.metric;
e->whotoldme = new->attrs->from;
e->updated = e->changed = now;
e->flags = 0;
-
- add_head( &P->rtable, NODE e );
}
}
@@ -658,9 +605,6 @@ rip_preconfig(struct protocol *x)
static void
rip_postconfig(struct protocol *p)
{
-#if 0 /* Cannot do this since it crashes when RIP is unconfigured */
- new_iface(p, NULL, 0);
-#endif
}
struct protocol proto_rip = {
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index 0e010dd..cfe0d67 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -2,18 +2,21 @@
* Structures for RIP protocol
*/
+#include "nest/route.h"
+
struct rip_connection {
node n;
int num;
struct proto *proto;
ip_addr addr;
- struct rip_entry *sendptr;
sock *send;
struct rip_interface *rif;
+ struct fib_iterator iter;
ip_addr daddr;
int dport;
+ int done;
};
struct rip_packet_heading {
@@ -39,11 +42,9 @@ struct rip_block {
};
struct rip_entry {
- node n;
+ struct fib_node n;
ip_addr whotoldme;
- ip_addr network;
- int pxlen;
ip_addr nexthop;
int metric;
u16 tag;
@@ -72,7 +73,7 @@ struct rip_proto {
struct proto inherited;
timer *timer;
list connections;
- list rtable;
+ struct fib rtable;
list garbage;
list interfaces; /* Interfaces we really know about */
list iface_list; /* Patterns configured */
@@ -91,3 +92,4 @@ struct rip_proto {
#define CHK_MAGIC do { if (P->magic != RIP_MAGIC) bug( "Not enough magic\n" ); } while (0)
void rip_init_instance(struct proto *p);
+struct rip_interface *new_iface(struct proto *p, struct iface *new, unsigned long flags);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 10:34:44 +0100