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Implements protocol-specific Router ID for OSPF.

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And fixes one minor bug.
This commit is contained in:
Ondrej Zajicek 2009-12-11 01:20:53 +01:00
parent be2d38b7e9
commit 8a70a13e7e
10 changed files with 48 additions and 59 deletions
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3
doc/bird.sgml
View file

@ -298,8 +298,7 @@ to zero to disable it. An empty <cf><m/switch/</cf> is equivalent to <cf/on/
<cf/packets/ for packets sent and received by the protocol. Default: off.
<tag>router id <m/IPv4 address/</tag> This option can be used to override global
router id for a given protocol. This option is not yet implemented for OSPF
protocol. Default: uses global router id.
router id for a given protocol. Default: uses global router id.
<tag>import all | none | filter <m/name/ | filter { <m/filter commands/ } | where <m/filter expression/</tag>
Specify a filter to be used for filtering routes coming from the protocol to the routing table. <cf/all/ is shorthand for <cf/where true/ and <cf/none/ is shorthand for <cf/where false/. Default: <cf/all/.

8
proto/ospf/dbdes.c
View file

@ -247,8 +247,8 @@ void
ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
struct ospf_neighbor *n)
{
struct proto *p = &ifa->oa->po->proto;
u32 myrid = p->cf->global->router_id;
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
unsigned int size = ntohs(ps_i->length);
if (size < sizeof(struct ospf_dbdes_packet))
@ -278,7 +278,7 @@ ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
return;
case NEIGHBOR_EXSTART:
if ((ps->imms.bit.m && ps->imms.bit.ms && ps->imms.bit.i)
&& (n->rid > myrid) && (size == sizeof(struct ospf_dbdes_packet)))
&& (n->rid > po->router_id) && (size == sizeof(struct ospf_dbdes_packet)))
{
/* I'm slave! */
n->dds = ps_ddseq;
@ -293,7 +293,7 @@ ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
}
if (((ps->imms.bit.i == 0) && (ps->imms.bit.ms == 0)) &&
(n->rid < myrid) && (n->dds == ps_ddseq))
(n->rid < po->router_id) && (n->dds == ps_ddseq))
{
/* I'm master! */
n->options = ps_options;

23
proto/ospf/hello.c
View file

@ -45,7 +45,8 @@ void
ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
struct ospf_neighbor *n, ip_addr faddr)
{
struct proto *p = &ifa->oa->po->proto;
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
char *beg = "Bad OSPF HELLO packet from ", *rec = " received: ";
unsigned int size, i, twoway, oldpriority, eligible, peers;
u32 olddr, oldbdr, oldiface_id, tmp;
@ -175,7 +176,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
twoway = 0;
for (i = 0; i < peers; i++)
{
if (ntohl(*(pnrid + i)) == p->cf->global->router_id)
if (ntohl(pnrid[i]) == po->router_id)
{
DBG("%s: Twoway received from %I\n", p->name, faddr);
ospf_neigh_sm(n, INM_2WAYREC);
@ -206,9 +207,9 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
if (n->state >= NEIGHBOR_2WAY)
{
#ifdef OSPFv2
u32 rid = ipa_to_u32(n->ip);
u32 neigh = ipa_to_u32(n->ip);
#else /* OSPFv3 */
u32 rid = p->cf->global->router_id;
u32 neigh = n->rid;
#endif
if (n->priority != oldpriority)
@ -219,23 +220,23 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
ospf_iface_sm(ifa, ISM_NEICH);
#endif
/* Router is declaring itself ad DR and there is no BDR */
if ((rid == n->dr) && (n->bdr == 0)
/* Neighbor is declaring itself ad DR and there is no BDR */
if ((n->dr == neigh) && (n->bdr == 0)
&& (n->state != NEIGHBOR_FULL))
ospf_iface_sm(ifa, ISM_BACKS);
/* Neighbor is declaring itself as BDR */
if ((rid == n->bdr) && (n->state != NEIGHBOR_FULL))
if ((n->bdr == neigh) && (n->state != NEIGHBOR_FULL))
ospf_iface_sm(ifa, ISM_BACKS);
/* Neighbor is newly declaring itself as DR or BDR */
if (((rid == n->dr) && (n->dr != olddr))
|| ((rid == n->bdr) && (n->bdr != oldbdr)))
if (((n->dr == neigh) && (n->dr != olddr))
|| ((n->bdr == neigh) && (n->bdr != oldbdr)))
ospf_iface_sm(ifa, ISM_NEICH);
/* Neighbor is no more declaring itself as DR or BDR */
if (((rid == olddr) && (n->dr != olddr))
|| ((rid == oldbdr) && (n->bdr != oldbdr)))
if (((olddr == neigh) && (n->dr != olddr))
|| ((oldbdr == neigh) && (n->bdr != oldbdr)))
ospf_iface_sm(ifa, ISM_NEICH);
}

3
proto/ospf/lsalib.c
View file

@ -65,8 +65,7 @@ ospf_age(struct proto_ospf *po)
flush_lsa(en, po);
continue;
}
if ((en->lsa.rt == p->cf->global->router_id) &&
(en->lsa.age >= LSREFRESHTIME))
if ((en->lsa.rt == po->router_id) && (en->lsa.age >= LSREFRESHTIME))
{
OSPF_TRACE(D_EVENTS, "Refreshing my LSA: Type: %u, Id: %R, Rt: %R",
en->lsa.type, en->lsa.id, en->lsa.rt);

2
proto/ospf/lsupd.c
View file

@ -524,7 +524,7 @@ ospf_lsupd_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
if ((lsadb == NULL) || (lsa_comp(&lsatmp, &lsadb->lsa) == CMP_NEWER))
{
struct ospf_iface *ift = NULL;
int self = (lsatmp.rt == p->cf->global->router_id);
int self = (lsatmp.rt == po->router_id);
DBG("PG143(5): Received LSA is newer\n");

7
proto/ospf/neighbor.c
View file

@ -439,15 +439,14 @@ ospf_neigh_sm(struct ospf_neighbor *n, int event)
void
bdr_election(struct ospf_iface *ifa)
{
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
u32 myid = po->router_id;
struct ospf_neighbor *neigh, *ndr, *nbdr, me;
u32 myid;
int doadj;
struct proto *p = &ifa->oa->po->proto;
DBG("(B)DR election.\n");
myid = p->cf->global->router_id;
me.state = NEIGHBOR_2WAY;
me.rid = myid;
me.priority = ifa->priority;

1
proto/ospf/ospf.h
View file

@ -730,6 +730,7 @@ struct proto_ospf
struct ospf_area *backbone; /* If exists */
void *lsab; /* LSA buffer used when originating router LSAs */
int lsab_size, lsab_used;
u32 router_id;
};
struct ospf_iface_patt

7
proto/ospf/packet.c
View file

@ -13,8 +13,9 @@
void
ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
{
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
struct ospf_packet *pkt;
struct proto *p = (struct proto *) (ifa->oa->po);
pkt = (struct ospf_packet *) buf;
@ -22,7 +23,7 @@ ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
pkt->type = h_type;
pkt->routerid = htonl(p->cf->global->router_id);
pkt->routerid = htonl(po->router_id);
pkt->areaid = htonl(ifa->oa->areaid);
#ifdef OSPFv3
@ -345,7 +346,7 @@ ospf_rx_hook(sock * sk, int size)
}
#endif
if (ntohl(ps->routerid) == p->cf->global->router_id)
if (ntohl(ps->routerid) == po->router_id)
{
log(L_ERR "%s%I - received my own router ID!", mesg, sk->faddr);
return 1;

7
proto/ospf/rt.c
View file

@ -534,10 +534,9 @@ ospf_rt_sum_tr(struct ospf_area *oa)
if (en->dist == LSINFINITY)
continue;
if (en->lsa.rt == p->cf->global->router_id)
if (en->lsa.rt == po->router_id)
continue;
if (en->lsa.type == LSA_T_SUM_NET)
{
#ifdef OSPFv2
@ -630,7 +629,7 @@ ospf_rt_sum(struct ospf_area *oa)
continue;
/* Page 169 (2) */
if (en->lsa.rt == p->cf->global->router_id)
if (en->lsa.rt == po->router_id)
continue;
@ -826,7 +825,7 @@ ospf_ext_spf(struct proto_ospf *po)
continue;
/* 16.4. (2) */
if (en->lsa.rt == p->cf->global->router_id)
if (en->lsa.rt == po->router_id)
continue;
DBG("%s: Working on LSA. ID: %R, RT: %R, Type: %u\n",

46
proto/ospf/topology.c
View file

@ -424,7 +424,6 @@ originate_rt_lsa(struct ospf_area *oa)
struct ospf_lsa_header lsa;
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
u32 rid = po->proto.cf->global->router_id;
void *body;
OSPF_TRACE(D_EVENTS, "Originating router-LSA for area %R", oa->areaid);
@ -436,8 +435,8 @@ originate_rt_lsa(struct ospf_area *oa)
lsa.options = oa->options;
#endif
lsa.id = rid;
lsa.rt = rid;
lsa.id = po->router_id;
lsa.rt = po->router_id;
lsa.sn = oa->rt ? (oa->rt->lsa.sn + 1) : LSA_INITSEQNO;
u32 dom = oa->areaid;
@ -473,6 +472,7 @@ static void *
originate_net_lsa_body(struct ospf_iface *ifa, u16 *length,
struct proto_ospf *po)
{
u32 rid = proto_get_router_id(po->proto.cf);
u16 i = 1;
struct ospf_neighbor *n;
struct ospf_lsa_net *net;
@ -491,7 +491,7 @@ originate_net_lsa_body(struct ospf_iface *ifa, u16 *length,
u32 options = 0;
#endif
net->routers[0] = po->proto.cf->global->router_id;
net->routers[0] = po->router_id;
WALK_LIST(n, ifa->neigh_list)
{
@ -532,10 +532,10 @@ void
originate_net_lsa(struct ospf_iface *ifa)
{
struct proto_ospf *po = ifa->oa->po;
struct ospf_lsa_header lsa;
u32 rid = po->proto.cf->global->router_id;
u32 dom = ifa->oa->areaid;
struct proto *p = &po->proto;
struct ospf_lsa_header lsa;
u32 dom = ifa->oa->areaid;
void *body;
OSPF_TRACE(D_EVENTS, "Originating network-LSA for iface %s",
@ -551,7 +551,7 @@ originate_net_lsa(struct ospf_iface *ifa)
lsa.id = ifa->iface->index;
#endif
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = ifa->net_lsa ? (ifa->net_lsa->lsa.sn + 1) : LSA_INITSEQNO;
body = originate_net_lsa_body(ifa, &lsa.length, po);
@ -707,7 +707,6 @@ originate_sum_net_lsa(struct ospf_area *oa, struct fib_node *fn, int metric)
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
struct top_hash_entry *en;
u32 rid = po->proto.cf->global->router_id;
u32 dom = oa->areaid;
struct ospf_lsa_header lsa;
void *body;
@ -722,7 +721,7 @@ originate_sum_net_lsa(struct ospf_area *oa, struct fib_node *fn, int metric)
#endif
lsa.type = LSA_T_SUM_NET;
lsa.id = fibnode_to_lsaid(po, fn);
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = LSA_INITSEQNO;
if ((en = ospf_hash_find_header(po->gr, dom, &lsa)) != NULL)
@ -749,7 +748,6 @@ originate_sum_rt_lsa(struct ospf_area *oa, struct fib_node *fn, int metric, u32
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
struct top_hash_entry *en;
u32 rid = po->proto.cf->global->router_id;
u32 dom = oa->areaid;
struct ospf_lsa_header lsa;
void *body;
@ -764,7 +762,7 @@ originate_sum_rt_lsa(struct ospf_area *oa, struct fib_node *fn, int metric, u32
lsa.type = LSA_T_SUM_RT;
/* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */
lsa.id = ipa_to_rid(fn->prefix);
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = LSA_INITSEQNO;
if ((en = ospf_hash_find_header(po->gr, dom, &lsa)) != NULL)
@ -793,10 +791,9 @@ flush_sum_lsa(struct ospf_area *oa, struct fib_node *fn, int type)
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
struct top_hash_entry *en;
u32 rid = po->proto.cf->global->router_id;
struct ospf_lsa_header lsa;
lsa.rt = rid;
lsa.rt = po->router_id;
if (type == ORT_NET)
{
lsa.id = fibnode_to_lsaid(po, fn);
@ -971,7 +968,6 @@ originate_ext_lsa(net * n, rte * e, struct proto_ospf *po,
struct proto *p = &po->proto;
struct fib_node *fn = &n->n;
struct ospf_lsa_header lsa;
u32 rid = po->proto.cf->global->router_id;
struct top_hash_entry *en = NULL;
void *body;
struct ospf_area *oa;
@ -985,7 +981,7 @@ originate_ext_lsa(net * n, rte * e, struct proto_ospf *po,
#endif
lsa.type = LSA_T_EXT;
lsa.id = fibnode_to_lsaid(po, fn);
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = LSA_INITSEQNO;
if ((en = ospf_hash_find_header(po->gr, 0, &lsa)) != NULL)
@ -1021,7 +1017,6 @@ flush_ext_lsa(net *n, struct proto_ospf *po)
{
struct proto *p = &po->proto;
struct fib_node *fn = &n->n;
u32 rid = po->proto.cf->global->router_id;
struct ospf_area *oa;
struct top_hash_entry *en;
@ -1030,7 +1025,7 @@ flush_ext_lsa(net *n, struct proto_ospf *po)
u32 lsaid = fibnode_to_lsaid(po, fn);
if (en = ospf_hash_find(po->gr, 0, lsaid, rid, LSA_T_EXT))
if (en = ospf_hash_find(po->gr, 0, lsaid, po->router_id, LSA_T_EXT))
{
if (check_ext_lsaid_collision(fn, en))
{
@ -1085,7 +1080,6 @@ originate_link_lsa(struct ospf_iface *ifa)
struct ospf_lsa_header lsa;
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
u32 rid = po->proto.cf->global->router_id;
void *body;
/* FIXME check for vlink and skip that? */
@ -1094,7 +1088,7 @@ originate_link_lsa(struct ospf_iface *ifa)
lsa.age = 0;
lsa.type = LSA_T_LINK;
lsa.id = ifa->iface->index;
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = ifa->link_lsa ? (ifa->link_lsa->lsa.sn + 1) : LSA_INITSEQNO;
u32 dom = ifa->iface->index;
@ -1127,7 +1121,6 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
struct proto_ospf *po = oa->po;
struct ospf_iface *ifa;
struct ospf_lsa_prefix *lp;
u32 rid = po->proto.cf->global->router_id;
int net_lsa;
int i = 0;
u8 flags;
@ -1136,7 +1129,7 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
lp = lsab_allocz(po, sizeof(struct ospf_lsa_prefix));
lp->ref_type = LSA_T_RT;
lp->ref_id = 0;
lp->ref_rt = rid;
lp->ref_rt = po->router_id;
lp = NULL; /* buffer might be reallocated later */
WALK_LIST(ifa, po->iface_list)
@ -1190,7 +1183,6 @@ originate_prefix_rt_lsa(struct ospf_area *oa)
{
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
u32 rid = po->proto.cf->global->router_id;
struct ospf_lsa_header lsa;
void *body;
@ -1199,7 +1191,7 @@ originate_prefix_rt_lsa(struct ospf_area *oa)
lsa.age = 0;
lsa.type = LSA_T_PREFIX;
lsa.id = 0;
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = oa->pxr_lsa ? (oa->pxr_lsa->lsa.sn + 1) : LSA_INITSEQNO;
u32 dom = oa->areaid;
@ -1289,14 +1281,13 @@ originate_prefix_net_lsa_body(struct ospf_iface *ifa, u16 *length)
struct ospf_lsa_prefix *lp;
struct ospf_neighbor *n;
struct top_hash_entry *en;
u32 rid = po->proto.cf->global->router_id;
int pxc, offset;
ASSERT(po->lsab_used == 0);
lp = lsab_allocz(po, sizeof(struct ospf_lsa_prefix));
lp->ref_type = LSA_T_NET;
lp->ref_id = ifa->net_lsa->lsa.id;
lp->ref_rt = rid;
lp->ref_rt = po->router_id;
lp = NULL; /* buffer might be reallocated later */
pxc = 0;
@ -1322,7 +1313,6 @@ originate_prefix_net_lsa(struct ospf_iface *ifa)
{
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
u32 rid = po->proto.cf->global->router_id;
struct ospf_lsa_header lsa;
void *body;
@ -1332,7 +1322,7 @@ originate_prefix_net_lsa(struct ospf_iface *ifa)
lsa.age = 0;
lsa.type = LSA_T_PREFIX;
lsa.id = ifa->iface->index;
lsa.rt = rid;
lsa.rt = po->router_id;
lsa.sn = ifa->pxn_lsa ? (ifa->pxn_lsa->lsa.sn + 1) : LSA_INITSEQNO;
u32 dom = ifa->oa->areaid;