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Rip now has configurable per-interface metric (please rewiev), and few

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more configurable parameters. To do that, union was added into iface_patt.
This commit is contained in:
Pavel Machek 1998-12-04 11:45:51 +00:00
parent 9b999c393c
commit 2d9290e973
4 changed files with 102 additions and 31 deletions
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5
nest/iface.h
View file

@ -100,6 +100,11 @@ struct iface_patt {
byte *pattern; /* Interface name pattern */
/* Protocol-specific data follow */
union {
struct {
int metric;
} rip;
} u;
};
struct iface_patt *iface_patt_match(list *, struct iface *);

57
proto/rip/config.Y
View file

@ -7,17 +7,23 @@
CF_HDR
#include "proto/rip/rip.h"
#include "nest/iface.h"
void rip_dev_add_iface(char *);
struct iface_patt *rip_get_iface(void);
#define THIS_PROTO ((struct rip_proto *) this_proto)
CF_DECLS
CF_KEYWORDS(RIP, INFINITY)
CF_KEYWORDS(RIP, INFINITY, METRIC, PORT, PERIOD, GARBAGETIME)
CF_GRAMMAR
CF_ADDTO(proto, rip_proto '}')
rip_proto_start: proto_start RIP {
this_proto = proto_new(&proto_rip, sizeof(struct rip_data));
this_proto = proto_new(&proto_rip, sizeof(struct rip_proto));
rip_init_instance(this_proto);
}
;
@ -25,12 +31,51 @@ rip_proto_start: proto_start RIP {
rip_proto:
rip_proto_start proto_name '{'
| rip_proto proto_item ';'
| rip_proto INFINITY expr ';' {
if ($3 < 0 || $3 > 64) cf_error("Invalid infinity");
((struct rip_data *) this_proto)->infinity = $3;
}
| rip_proto INFINITY expr ';' { THIS_PROTO->infinity = $3; }
| rip_proto PORT expr ';' { THIS_PROTO->port = $3; }
| rip_proto PERIOD expr ';' { THIS_PROTO->period = $3; }
| rip_proto GARBAGETIME expr ';' { THIS_PROTO->garbage_time = $3; }
| rip_proto rip_iface_list ';'
;
rip_iface_item:
| METRIC expr {
struct iface_patt *k = rip_get_iface();
k->u.rip.metric = $2;
}
;
rip_iface_opts:
'{'
| rip_iface_opts rip_iface_item ';'
;
rip_iface_empty: /* EMPTY */ | rip_iface_opts '}' ;
rip_iface_list:
INTERFACE TEXT rip_iface_empty { rip_dev_add_iface($2); }
| dev_iface_list ',' TEXT rip_iface_empty { rip_dev_add_iface($3); }
;
CF_CODE
void
rip_dev_add_iface(char *n)
{
struct iface_patt *k = cfg_alloc(sizeof(struct iface_patt));
k->pattern = cfg_strcpy(n);
add_tail(&THIS_PROTO->iface_list, &k->n);
}
struct iface_patt *
rip_get_iface(void)
{
struct iface_patt *k = TAIL(THIS_PROTO->iface_list);
if (!k)
cf_error( "This cannot happen" );
return k;
}
CF_END

57
proto/rip/rip.c
View file

@ -22,15 +22,6 @@
#include "rip.h"
/* FIXME: should be 520 */
#define RIP_PORT 1520
/* 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)
{
@ -218,6 +209,17 @@ rip_sendto( struct proto *p, ip_addr daddr, int dport, struct rip_interface *rif
rip_tx(c->rif->sock);
}
struct rip_interface*
find_interface(struct proto *p, struct iface *what)
{
struct rip_interface *i;
/* FIXME: We really want to use some kind of hash-table */
WALK_LIST (i, P->interfaces)
if (i->iface == what)
return i;
return NULL;
}
/*
* Input processing
*/
@ -237,6 +239,7 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme )
rte *r;
net *n;
neighbor *neighbor;
struct rip_interface *i;
bzero(&A, sizeof(A));
A.proto = p;
@ -256,11 +259,13 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme )
}
A.iface = neighbor->iface;
i = find_interface(p, A.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.metric = ntohl(b->metric) + i->metric;
if (r->u.rip.metric > P->infinity) r->u.rip.metric = P->infinity;
r->u.rip.tag = ntohl(b->tag);
r->net = n;
r->pflags = 0; /* Here go my flags */
@ -311,7 +316,7 @@ rip_process_packet( struct proto *p, struct rip_packet *packet, int num, ip_addr
rip_sendto( p, whotoldme, port, NULL ); /* no broadcast */
break;
case RIPCMD_RESPONSE: debug( "*** Rtable from %I\n", whotoldme );
if (port != RIP_PORT) {
if (port != P->port) {
log( L_ERR "%I send me routing info from port %d\n", whotoldme, port );
#if 0
return 0;
@ -400,7 +405,7 @@ rip_timer(timer *t)
rte = SKIP_BACK( struct rte, u.rip.garbage, e );
debug( "Garbage: " ); rte_dump( rte );
if (now - rte->lastmod > (RIP_GB_TIME)) {
if (now - rte->lastmod > P->garbage_time) {
debug( "RIP: entry is too old: " ); rte_dump( rte );
rte_discard(rte);
}
@ -436,7 +441,7 @@ rip_start(struct proto *p)
P->timer = tm_new( p->pool );
P->timer->data = p;
P->timer->randomize = 5;
P->timer->recurrent = RIP_TIME;
P->timer->recurrent = P->period;
P->timer->hook = rip_timer;
tm_start( P->timer, 5 );
CHK_MAGIC;
@ -497,7 +502,7 @@ new_iface(struct proto *p, struct iface *new)
i->sock = sk_new( p->pool );
i->sock->type = SK_UDP;
i->sock->sport = RIP_PORT;
i->sock->sport = P->port;
i->sock->rx_hook = rip_rx;
i->sock->data = i;
i->sock->rbsize = 10240;
@ -506,7 +511,7 @@ new_iface(struct proto *p, struct iface *new)
i->sock->tx_hook = rip_tx;
i->sock->err_hook = rip_tx_err;
i->sock->daddr = IPA_NONE;
i->sock->dport = RIP_PORT;
i->sock->dport = P->port;
if (new->flags & IF_BROADCAST)
i->sock->daddr = new->brd;
@ -528,15 +533,19 @@ rip_if_notify(struct proto *p, unsigned c, struct iface *old, struct iface *new)
debug( "RIP: if notify\n" );
if (old) {
struct rip_interface *i;
WALK_LIST (i, P->interfaces)
if (i->iface == old) {
rem_node(NODE i);
kill_iface(p, i);
}
i = find_interface(p, old);
if (i) {
rem_node(NODE i);
kill_iface(p, i);
}
}
if (new) {
struct rip_interface *i;
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 );
}
}
@ -620,7 +629,13 @@ rip_init_instance(struct proto *p)
p->rte_insert = rip_rte_insert;
p->rte_remove = rip_rte_remove;
p->dump = rip_dump;
P->infinity = 16;
P->infinity = 16;
P->port = 520;
P->period = 30;
P->garbage_time = 120+180;
init_list(&P->iface_list);
}
static void

14
proto/rip/rip.h
View file

@ -64,21 +64,27 @@ struct rip_interface {
struct iface *iface;
sock *sock;
struct rip_connection *busy;
int metric; /* User configurable data */
};
struct rip_data {
struct rip_proto {
struct proto inherited;
timer *timer;
list connections;
list rtable;
list garbage;
list interfaces;
list interfaces; /* Interfaces we really know about */
list iface_list; /* Patterns configured */
int magic;
int infinity; /* How much is infinity? Should be 16 */
int infinity; /* User configurable data */
int port;
int period;
int garbage_time;
};
#define P ((struct rip_data *) p)
#define P ((struct rip_proto *) p)
#define E ((struct rip_entry *) e)
#define RIP_MAGIC 81861253