Commit 5919c66e authored by Martin Mareš's avatar Martin Mareš

Route attributes for OSPF.

parent 2cec475b
......@@ -287,7 +287,8 @@ typedef struct eattr {
#define EAP_GENERIC 0 /* Generic attributes */
#define EAP_BGP 1 /* BGP attributes */
#define EAP_RIP 2 /* RIP */
#define EAP_MAX 3
#define EAP_OSPF 3 /* OSPF */
#define EAP_MAX 4
#define EA_CODE(proto,id) (((proto) << 8) | (id))
#define EA_PROTO(ea) ((ea) >> 8)
......
......@@ -12,7 +12,7 @@ CF_HDR
CF_DECLS
CF_KEYWORDS(OSPF, AREA)
CF_KEYWORDS(OSPF, AREA, OSPF_METRIC1, OSPF_METRIC2, OSPF_TAG)
CF_GRAMMAR
......@@ -35,6 +35,10 @@ ospf_area: AREA idval {
}
;
CF_ADDTO(dynamic_attr, OSPF_METRIC1 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC1); })
CF_ADDTO(dynamic_attr, OSPF_METRIC2 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC2); })
CF_ADDTO(dynamic_attr, OSPF_TAG { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_TAG); })
CF_CODE
CF_END
......@@ -63,12 +63,13 @@ ospf_init(struct proto_config *c)
struct proto_ospf *po=(struct proto_ospf *)p;
debug("OSPF: Init requested.\n");
p->neigh_notify = NULL;
p->import_control = ospf_import_control;
p->make_tmp_attrs = ospf_make_tmp_attrs;
p->store_tmp_attrs = ospf_store_tmp_attrs;
p->rt_notify = ospf_rt_notify;
p->if_notify = ospf_if_notify;
p->rte_better=ospf_rte_better;
p->rte_same=ospf_rte_same;
p->rte_better = ospf_rte_better;
p->rte_same = ospf_rte_same;
return p;
}
......@@ -104,12 +105,34 @@ ospf_rte_better(struct rte *new, struct rte *old)
static int
ospf_rte_same(struct rte *new, struct rte *old)
{
struct proto *p = new->attrs->proto;
/* new->attrs == old->attrs always */
return
new->u.ospf.metric1 == old->u.ospf.metric1 &&
new->u.ospf.metric2 == old->u.ospf.metric2 &&
new->u.ospf.tag == old->u.ospf.tag;
}
if(new->attrs->source!=old->attrs->source) return 0;
if(new->u.ospf.metric1!=old->u.ospf.metric1) return 0;
if(new->u.ospf.metric2!=old->u.ospf.metric2) return 0;
return 1;
static ea_list *
ospf_build_attrs(ea_list *next, struct linpool *pool, u32 m1, u32 m2, u32 tag)
{
struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 3*sizeof(eattr));
l->next = next;
l->flags = EALF_SORTED;
l->count = 3;
l->attrs[0].id = EA_OSPF_METRIC1;
l->attrs[0].flags = 0;
l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[0].u.data = m1;
l->attrs[1].id = EA_OSPF_METRIC2;
l->attrs[1].flags = 0;
l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[1].u.data = m2;
l->attrs[2].id = EA_OSPF_TAG;
l->attrs[2].flags = 0;
l->attrs[2].type = EAF_TYPE_INT | EAF_TEMP;
l->attrs[2].u.data = tag;
return l;
}
int
......@@ -118,9 +141,23 @@ ospf_import_control(struct proto *p, rte **new, ea_list **attrs, struct linpool
rte *e=*new;
struct proto_ospf *po=(struct proto_ospf *)p;
if(p==e->attrs->proto) return -1;
if(p==e->attrs->proto) return -1; /* Reject our own routes */
*attrs = ospf_build_attrs(*attrs, pool, 0, 0, 0); /* FIXME: Use better defaults? */
return 0; /* Leave decision to the filters */
}
return 0;
struct ea_list *
ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool)
{
return ospf_build_attrs(NULL, pool, rt->u.ospf.metric1, rt->u.ospf.metric2, rt->u.ospf.tag);
}
void
ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs)
{
rt->u.ospf.metric1 = ea_get_int(attrs, EA_OSPF_METRIC1, 0);
rt->u.ospf.metric2 = ea_get_int(attrs, EA_OSPF_METRIC2, 0);
rt->u.ospf.tag = ea_get_int(attrs, EA_OSPF_TAG, 0);
}
static int
......@@ -152,7 +189,7 @@ ospf_rt_notify(struct proto *p, net *n, rte *new, rte *old, ea_list *attrs)
if(new) /* Got some new route */
{
originate_ext_lsa(n, new, po);
originate_ext_lsa(n, new, po, attrs);
}
else
{
......@@ -210,13 +247,27 @@ ospf_get_route_info(rte *rte, byte *buf, ea_list *attrs)
(rte->u.ospf.metric2==0) ? rte->u.ospf.metric1 : rte->u.ospf.metric2);
}
static int
ospf_get_attr(eattr *a, byte *buf)
{
switch (a->id)
{
case EA_OSPF_METRIC1: bsprintf(buf, "metric1"); return GA_NAME;
case EA_OSPF_METRIC2: bsprintf(buf, "metric2"); return GA_NAME;
case EA_OSPF_TAG: bsprintf(buf, "tag: %08x", a->u.data); return GA_FULL;
default: return GA_UNKNOWN;
}
}
struct protocol proto_ospf = {
name: "OSPF",
template: "ospf%d",
attr_class: EAP_OSPF,
init: ospf_init,
dump: ospf_dump,
start: ospf_start,
shutdown: ospf_shutdown,
get_route_info: ospf_get_route_info,
get_attr: ospf_get_attr,
get_status: ospf_get_status
};
......@@ -353,8 +353,14 @@ static int ospf_rte_better(struct rte *new, struct rte *old);
static int ospf_rte_same(struct rte *new, struct rte *old);
int ospf_import_control(struct proto *p, rte **new, ea_list **attrs,
struct linpool *pool);
struct ea_list *ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
void ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs);
void ospf_rt_notify(struct proto *p, net *n, rte *new, rte *old,ea_list *attrs);
#define EA_OSPF_METRIC1 EA_CODE(EAP_OSPF, 0)
#define EA_OSPF_METRIC2 EA_CODE(EAP_OSPF, 1)
#define EA_OSPF_TAG EA_CODE(EAP_OSPF, 2)
#include "proto/ospf/hello.h"
#include "proto/ospf/packet.h"
#include "proto/ospf/iface.h"
......
......@@ -319,38 +319,42 @@ originate_net_lsa(struct ospf_iface *ifa, struct proto_ospf *po)
flood_lsa(NULL,NULL,&ifa->nlsa->lsa,po,NULL,ifa->oa,1);
}
void *
originate_ext_lsa_body(net *n, rte *e, struct proto_ospf *po)
static void *
originate_ext_lsa_body(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs)
{
struct proto *p=&po->proto;
struct ospf_lsa_ext *ext;
struct ospf_lsa_ext_tos *et;
neighbor *nn;
u32 m1 = ea_get_int(attrs, EA_OSPF_METRIC1, 0);
u32 m2 = ea_get_int(attrs, EA_OSPF_METRIC2, 0);
u32 tag = ea_get_int(attrs, EA_OSPF_TAG, 0);
ext=mb_alloc(p->pool,sizeof(struct ospf_lsa_ext)+
sizeof(struct ospf_lsa_ext_tos));
ext->netmask=ipa_mkmask(n->n.pxlen);
et=(struct ospf_lsa_ext_tos *)(ext+1);
if(e->u.ospf.metric2!=0)
{
et->etos=0;
et->metric=e->u.ospf.metric1;
}
if(!m2)
{
et->etos=0;
et->metric=m1;
}
else
{
et->etos=1;
et->metric=e->u.ospf.metric2;
}
{
et->etos=0x80;
et->metric=m2;
}
et->padding=0;
et->tag=e->u.ospf.tag;
et->tag=tag;
if(1) et->fwaddr= ipa_from_u32(0); /* FIXME if e->attrs->iface is not in my AS*/
else et->fwaddr=e->attrs->gw;
return ext;
}
void
originate_ext_lsa(net *n, rte *e, struct proto_ospf *po)
originate_ext_lsa(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs)
{
struct ospf_lsa_header lsa;
u32 rtid=po->proto.cf->global->router_id;
......@@ -366,7 +370,7 @@ originate_ext_lsa(net *n, rte *e, struct proto_ospf *po)
lsa.type=LSA_T_EXT;
lsa.rt=rtid;
lsa.sn=LSA_INITSEQNO;
body=originate_ext_lsa_body(n, e, po);
body=originate_ext_lsa_body(n, e, po, attrs);
lsa.length=sizeof(struct ospf_lsa_ext)+sizeof(struct ospf_lsa_ext_tos)+
sizeof(struct ospf_lsa_header);
lsasum_calculate(&lsa,body,po);
......
......@@ -49,6 +49,6 @@ void addifa_rtlsa(struct ospf_iface *ifa);
void originate_rt_lsa(struct ospf_area *oa,struct proto_ospf *po);
void originate_net_lsa(struct ospf_iface *ifa,struct proto_ospf *po);
int can_flush_lsa(struct ospf_area *oa);
void originate_ext_lsa(net *n, rte *e, struct proto_ospf *po);
void originate_ext_lsa(net *n, rte *e, struct proto_ospf *po, struct ea_list *attrs);
#endif /* _BIRD_OSPF_TOPOLOGY_H_ */
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