bird/proto/ospf/ospf.c
Martin Mares 0077aab4f9 The code was broken for external /29 to /32 routes. Assuming that you
have one machine publishing a route to 10.1.1.3/32 and another one
publishing a route to 10.1.1.4/32. If the first machine went down the
route to 10.1.1.4/32 was wrongly killed by the old code, leading either
to missing routes or worse to bug()s like "Router parent does not have
next hop" or just segfaults. The patch fixes this but in the long term a
redesign is required here. Note that the patch doesn't worse the
situation, instead it prevents the problems stated. The redesign is
required to handle multiple routes to small subnets properly.

(by Andreas)

Feela, I think that this is at least a good temporary fix, but it's
of course up to you to decide.
2004-05-31 18:16:42 +00:00

907 lines
24 KiB
C

/*
* BIRD -- OSPF
*
* (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
/**
* DOC: Open Shortest Path First (OSPF)
*
* The OSPF protocol is quite complicated and its complex implemenation is
* split to many files. In |ospf.c|, you will find mainly the interface
* for communication with the core (e.g., reconfiguration hooks, shutdown
* and initialisation and so on). In |packet.c|, you will find various
* functions for sending and receiving generic OSPF packets. There are
* also routines for authentication and checksumming. File |iface.c| contains
* the interface state machine and functions for allocation and deallocation of OSPF's
* interface data structures. Source |neighbor.c| includes the neighbor state
* machine and functions for election of Designated Router and Backup
* Designated router. In |hello.c|, there are routines for sending
* and receiving of hello packets as well as functions for maintaining
* wait times and the inactivity timer. Files |lsreq.c|, |lsack.c|, |dbdes.c|
* contain functions for sending and receiving of link-state requests,
* link-state acknowledgements and database descriptions respectively.
* In |lsupd.c|, there are functions for sending and receiving
* of link-state updates and also the flooding algorithm. Source |topology.c| is
* a place where routines for searching LSAs in the link-state database,
* adding and deleting them reside, there also are functions for originating
* of various types of LSAs (router LSA, net LSA, external LSA). File |rt.c|
* contains routines for calculating the routing table. |lsalib.c| is a set
* of various functions for working with the LSAs (endianity conversions,
* calculation of checksum etc.).
*
* One instance of the protocol is able to hold LSA databases for
* multiple OSPF areas, to exchange routing information between
* multiple neighbors and to calculate the routing tables. The core
* structure is &proto_ospf to which multiple &ospf_area and
* &ospf_iface structures are connected. &ospf_area is also connected to
* &top_hash_graph which is a dynamic hashing structure that
* describes the link-state database. It allows fast search, addition
* and deletion. Each LSA is kept in two pieces: header and body. Both of them are
* kept in the endianity of the CPU.
*
* Every area has its own area_disp() which is
* responsible for late originating of router LSA, calculating
* of the routing table and it also ages and flushes the LSAs. This
* function is called in regular intervals.
* To every &ospf_iface, we connect one or more
* &ospf_neighbor's -- a structure containing many timers and queues
* for building adjacency and for exchange of routing messages.
*
* BIRD's OSPF implementation respects RFC2328 in every detail, but
* some of internal algorithms do differ. The RFC recommends making a snapshot
* of the link-state database when a new adjacency is forming and sending
* the database description packets based on the information in this
* snapshot. The database can be quite large in some networks, so
* rather we walk through a &slist structure which allows us to
* continue even if the actual LSA we were working with is deleted. New
* LSAs are added at the tail of this &slist.
*
* We also don't keep a separate OSPF routing table, because the core
* helps us by being able to recognize when a route is updated
* to an identical one and it suppresses the update automatically.
* Due to this, we can flush all the routes we've recalculated and
* also those we've deleted to the core's routing table and the
* core will take care of the rest. This simplifies the process
* and conserves memory.
*/
#include "ospf.h"
static int
ospf_start(struct proto *p)
{
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_config *c=(struct ospf_config *)(p->cf);
struct ospf_area_config *ac;
struct ospf_area *oa;
struct area_net *anet,*antmp;
fib_init(&po->efib,p->pool,sizeof(struct extfib),16,init_efib);
init_list(&(po->iface_list));
init_list(&(po->area_list));
po->areano=0;
if(EMPTY_LIST(c->area_list))
{
log("%s: Cannot start, no OSPF areas configured", p->name);
return PS_DOWN;
}
WALK_LIST(ac,c->area_list)
{
oa=mb_allocz(po->proto.pool, sizeof(struct ospf_area));
add_tail(&po->area_list, NODE oa);
po->areano++;
oa->stub=ac->stub;
oa->tick=ac->tick;
oa->areaid=ac->areaid;
oa->gr=ospf_top_new(po);
s_init_list(&(oa->lsal));
oa->rt=NULL;
oa->po=po;
oa->disp_timer=tm_new(po->proto.pool);
oa->disp_timer->data=oa;
oa->disp_timer->randomize=0;
oa->disp_timer->hook=area_disp;
oa->disp_timer->recurrent=oa->tick;
tm_start(oa->disp_timer,oa->tick);
oa->calcrt=0;
oa->origrt=0;
init_list(&oa->net_list);
WALK_LIST(anet,ac->net_list)
{
antmp=mb_allocz(po->proto.pool, sizeof(struct area_net));
antmp->net=anet->net;
antmp->mlen=anet->mlen;
antmp->hidden=anet->hidden;
add_tail(&oa->net_list, NODE antmp);
}
fib_init(&oa->infib,po->proto.pool,sizeof(struct infib),16,init_infib);
}
return PS_UP;
}
static void
ospf_dump(struct proto *p)
{
char areastr[20];
struct ospf_iface *ifa;
struct ospf_neighbor *n;
struct ospf_config *c = (void *) p->cf;
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_area *oa;
OSPF_TRACE(D_EVENTS, "Area number: %d", po->areano);
WALK_LIST(ifa, po->iface_list)
{
OSPF_TRACE(D_EVENTS, "Interface: %s", ifa->iface->name);
OSPF_TRACE(D_EVENTS, "state: %u", ifa->state);
OSPF_TRACE(D_EVENTS, "DR: %I", ifa->drid);
OSPF_TRACE(D_EVENTS, "BDR: %I", ifa->bdrid);
WALK_LIST(n, ifa->neigh_list)
{
OSPF_TRACE(D_EVENTS, " neighbor %I in state %u", n->rid, n->state);
}
}
WALK_LIST(NODE oa,po->area_list)
{
OSPF_TRACE(D_EVENTS, "LSA graph dump for area \"%I\" start:", oa->areaid);
ospf_top_dump(oa->gr,p);
OSPF_TRACE(D_EVENTS, "LSA graph dump for area \"%I\" finished", oa->areaid);
}
neigh_dump_all();
}
static struct proto *
ospf_init(struct proto_config *c)
{
struct proto *p = proto_new(c, sizeof(struct proto_ospf));
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_config *oc=(struct ospf_config *)c;
struct ospf_area_config *ac;
struct ospf_iface_patt *patt;
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;
po->rfc1583=oc->rfc1583;
po->ebit=0;
return p;
}
/* If new is better return 1 */
static int
ospf_rte_better(struct rte *new, struct rte *old)
{
struct proto *p = new->attrs->proto;
if(new->u.ospf.metric1==LSINFINITY) return 0;
/* External paths are always longer that internal */
if(((new->attrs->source==RTS_OSPF) || (new->attrs->source==RTS_OSPF_IA))
&& (old->attrs->source==RTS_OSPF_EXT)) return 1;
if(((old->attrs->source==RTS_OSPF) || (old->attrs->source==RTS_OSPF_IA))
&& (new->attrs->source==RTS_OSPF_EXT)) return 0;
if(new->u.ospf.metric2<old->u.ospf.metric2)
{
if(old->u.ospf.metric2==LSINFINITY) return 0; /* Old is E1, new is E2 */
return 1; /* Both are E2 */
}
if(new->u.ospf.metric2>old->u.ospf.metric2)
{
if(new->u.ospf.metric2==LSINFINITY) return 1; /* New is E1, old is E2 */
return 0; /* Both are E2 */
}
/*
* E2 metrics are the same. It means that:
* 1) Paths are E2 with same metric
* 2) Paths are E1.
*/
if(new->u.ospf.metric1<old->u.ospf.metric1) return 1;
return 0; /* Old is shorter or same */
}
static int
ospf_rte_same(struct rte *new, struct rte *old)
{
/* 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;
}
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;
}
void
schedule_rt_lsa(struct ospf_area *oa)
{
struct proto_ospf *po=oa->po;
struct proto *p=&po->proto;
OSPF_TRACE(D_EVENTS, "Scheduling RT lsa origination for area %I.",
oa->areaid);
oa->origrt=1;
}
void
schedule_rtcalc(struct ospf_area *oa)
{
struct proto_ospf *po=oa->po;
struct proto *p=&po->proto;
OSPF_TRACE(D_EVENTS, "Scheduling RT calculation for area %I.",
oa->areaid);
oa->calcrt=1;
}
/**
* area_disp - invokes link-state database aging, origination of
* router LSA and routing table calculation
* @timer: it's called every @ospf_area->tick seconds
*
* It invokes aging and when @ospf_area->origrt is set to 1, start
* function for origination of router LSA and network LSAs.
* It also starts routing
* table calculation when @ospf_area->calcrt is set.
*/
void
area_disp(timer *timer)
{
struct ospf_area *oa=timer->data;
struct top_hash_entry *en,*nxt;
struct proto_ospf *po=oa->po;
struct ospf_iface *ifa;
/* Now try to originage rt_lsa */
if(oa->origrt) originate_rt_lsa(oa);
/* Now try to originate network LSA's */
WALK_LIST(ifa, po->iface_list)
{
if(ifa->orignet&&(ifa->an==oa->areaid)) originate_net_lsa(ifa);
}
/* Age LSA DB */
ospf_age(oa);
/* Calculate routing table */
if(oa->calcrt) ospf_rt_spfa(oa);
oa->calcrt=0;
}
/**
* ospf_import_control - accept or reject new route from nest's routing table
* @p: current instance of protocol
* @new: the new route
* @attrs: list of attributes
* @pool: pool for allocation of attributes
*
* Its quite simple. It does not accept our own routes and leaves the decision on
* import to the filters.
*/
int
ospf_import_control(struct proto *p, rte **new, ea_list **attrs, struct linpool *pool)
{
rte *e=*new;
struct proto_ospf *po=(struct proto_ospf *)p;
if(p==e->attrs->proto) return -1; /* Reject our own routes */
*attrs = ospf_build_attrs(*attrs, pool, LSINFINITY, 10000, 0);
return 0; /* Leave decision to the filters */
}
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, LSINFINITY);
rt->u.ospf.metric2 = ea_get_int(attrs, EA_OSPF_METRIC2, 10000);
rt->u.ospf.tag = ea_get_int(attrs, EA_OSPF_TAG, 0);
}
/**
* ospf_shutdown - Finish of OSPF instance
* @p: current instance of protocol
*
* RFC does not define any action that should be taken before router
* shutdown. To make my neighbors react as fast as possible, I send
* them hello packet with empty neighbor list. They should start
* their neighbor state machine with event %NEIGHBOR_1WAY.
*/
static int
ospf_shutdown(struct proto *p)
{
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_iface *ifa;
struct ospf_neighbor *n;
struct ospf_area *oa;
OSPF_TRACE(D_EVENTS, "Shutdown requested");
/* And send to all my neighbors 1WAY */
WALK_LIST(ifa, po->iface_list)
{
init_list(&ifa->neigh_list);
hello_timer_hook(ifa->hello_timer);
}
return PS_DOWN;
}
void
ospf_rt_notify(struct proto *p, net *n, rte *new, rte *old, ea_list *attrs)
{
struct proto_ospf *po=(struct proto_ospf *)p;
/* Temporarily down write anything
OSPF_TRACE(D_EVENTS, "Got route %I/%d %s", p->name, n->n.prefix,
n->n.pxlen, new ? "up" : "down");
*/
if(new) /* Got some new route */
{
originate_ext_lsa(n, new, po, attrs);
}
else
{
u32 rtid=po->proto.cf->global->router_id;
struct ospf_area *oa;
struct top_hash_entry *en;
u32 pr=ipa_to_u32(n->n.prefix);
struct ospf_lsa_ext *ext;
int i;
int max=max_ext_lsa(n->n.pxlen);
/* Flush old external LSA */
WALK_LIST(oa, po->area_list)
{
for(i=0;i<max;i++,pr++)
{
if(en=ospf_hash_find(oa->gr, pr, rtid, LSA_T_EXT))
{
ext=en->lsa_body;
if(ipa_compare(ext->netmask, ipa_mkmask(n->n.pxlen))==0)
{
net_flush_lsa(en,po,oa);
break;
}
}
}
}
}
}
static void
ospf_get_status(struct proto *p, byte *buf)
{
struct proto_ospf *po=(struct proto_ospf *)p;
if (p->proto_state == PS_DOWN) buf[0] = 0;
else
{
struct ospf_iface *ifa;
struct ospf_neighbor *n;
int adj=0;
WALK_LIST(ifa,po->iface_list)
WALK_LIST(n,ifa->neigh_list)
if(n->state==NEIGHBOR_FULL) adj=1;
if(adj==0) strcpy(buf, "Alone");
else strcpy(buf, "Running");
}
}
static void
ospf_get_route_info(rte *rte, byte *buf, ea_list *attrs)
{
char met=' ';
char type=' ';
if(rte->attrs->source==RTS_OSPF_EXT)
{
met='1';
type='E';
}
if(rte->u.ospf.metric2!=LSINFINITY) met='2';
if(rte->attrs->source==RTS_OSPF_IA) type='A';
if(rte->attrs->source==RTS_OSPF) type='I';
buf += bsprintf(buf, " %c", type);
if(met!=' ') buf += bsprintf(buf, "%c", met);
buf += bsprintf(buf, " (%d/%d", rte->pref, rte->u.ospf.metric1);
if(rte->u.ospf.metric2!=LSINFINITY) buf += bsprintf(buf, "/%d", rte->u.ospf.metric2);
buf += bsprintf(buf, ")");
if(rte->attrs->source==RTS_OSPF_EXT && rte->u.ospf.tag)
{
buf += bsprintf(buf, " [%x]", rte->u.ospf.tag);
}
}
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;
}
}
static int
ospf_patt_compare(struct ospf_iface_patt *a, struct ospf_iface_patt *b)
{
return ((a->type==b->type)&&(a->priority==b->priority));
}
/**
* ospf_reconfigure - reconfiguration hook
* @p: current instance of protocol (with old configuration)
* @c: new configuration requested by user
*
* This hook tries to be a little bit intelligent. Instance of OSPF
* will survive change of many constants like hello interval,
* password change, addition or deletion of some neighbor on
* nonbroadcast network, cost of interface, etc.
*/
static int
ospf_reconfigure(struct proto *p, struct proto_config *c)
{
struct ospf_config *old=(struct ospf_config *)(p->cf);
struct ospf_config *new=(struct ospf_config *)c;
struct ospf_area_config *ac1,*ac2;
struct proto_ospf *po=( struct proto_ospf *)p;
struct ospf_iface_patt *ip1,*ip2;
struct ospf_iface *ifa;
struct nbma_node *nb1,*nb2,*nbnx;
struct ospf_area *oa=NULL;
struct area_net *anet,*antmp;
int found;
po->rfc1583=new->rfc1583;
WALK_LIST(oa, po->area_list) /* Routing table must be recalculated */
{
schedule_rtcalc(oa);
}
ac1=HEAD(old->area_list);
ac2=HEAD(new->area_list);
/* I should get it in same order */
while(((NODE (ac1))->next!=NULL) && ((NODE (ac2))->next!=NULL))
{
if(ac1->areaid!=ac2->areaid) return 0;
if(ac1->stub!=ac2->stub) return 0; /* FIXME: non zero values can change */
WALK_LIST(oa,po->area_list)
if(oa->areaid==ac2->areaid) break;
if(!oa) return 0;
if(ac1->tick!=ac2->tick)
{
if(oa->areaid==ac2->areaid)
{
oa->tick=ac2->tick;
tm_start(oa->disp_timer,oa->tick);
OSPF_TRACE(D_EVENTS,
"Changing tick interval on area %I from %d to %d",
oa->areaid, ac1->tick, ac2->tick);
break;
}
}
/* Change net_list */
WALK_LIST_DELSAFE(anet, antmp, oa->net_list)
{
rem_node(NODE anet);
mb_free(anet);
}
WALK_LIST(anet, ac2->net_list)
{
antmp=mb_alloc(p->pool, sizeof(struct area_net));
antmp->net=anet->net;
antmp->mlen=anet->mlen;
antmp->hidden=anet->hidden;
add_tail(&oa->net_list, NODE antmp);
}
if(!iface_patts_equal(&ac1->patt_list, &ac2->patt_list,
(void *) ospf_patt_compare))
return 0;
WALK_LIST(ifa, po->iface_list)
{
if(ip1=(struct ospf_iface_patt *)
iface_patt_match(&ac1->patt_list, ifa->iface))
{
/* Now reconfigure interface */
if(!(ip2=(struct ospf_iface_patt *)
iface_patt_match(&ac2->patt_list, ifa->iface))) return 0;
/* HELLO TIMER */
if(ip1->helloint!=ip2->helloint)
{
ifa->helloint=ip2->helloint;
ifa->hello_timer->recurrent=ifa->helloint;
tm_start(ifa->hello_timer,ifa->helloint);
OSPF_TRACE(D_EVENTS,
"Changing hello interval on interface %s from %d to %d",
ifa->iface->name,ip1->helloint,ip2->helloint);
}
/* POLL TIMER */
if(ip1->pollint!=ip2->pollint)
{
ifa->pollint=ip2->helloint;
ifa->poll_timer->recurrent=ifa->pollint;
tm_start(ifa->poll_timer,ifa->pollint);
OSPF_TRACE(D_EVENTS,
"Changing poll interval on interface %s from %d to %d",
ifa->iface->name,ip1->pollint,ip2->pollint);
}
/* COST */
if(ip1->cost!=ip2->cost)
{
ifa->cost=ip2->cost;
OSPF_TRACE(D_EVENTS,
"Changing cost interface %s from %d to %d",
ifa->iface->name,ip1->cost,ip2->cost);
schedule_rt_lsa(ifa->oa);
}
/* strict nbma */
if((ip1->strictnbma==0)&&(ip2->strictnbma!=0))
{
ifa->strictnbma=ip2->strictnbma;
OSPF_TRACE(D_EVENTS,
"Interface %s is now strict NBMA.",
ifa->iface->name);
}
if((ip1->strictnbma!=0)&&(ip2->strictnbma==0))
{
ifa->strictnbma=ip2->strictnbma;
OSPF_TRACE(D_EVENTS,
"Interface %s is no longer strict NBMA.",
ifa->iface->name);
}
/* stub */
if((ip1->stub==0)&&(ip2->stub!=0))
{
ifa->stub=ip2->stub;
OSPF_TRACE(D_EVENTS,
"Interface %s is now stub.",
ifa->iface->name);
}
if((ip1->stub!=0)&&(ip2->stub==0)&&
((ifa->ioprob & OSPF_I_IP)==0)&&
(((ifa->ioprob & OSPF_I_MC)==0)||
(ifa->type==OSPF_IT_NBMA)))
{
ifa->stub=ip2->stub;
OSPF_TRACE(D_EVENTS,
"Interface %s is no longer stub.",
ifa->iface->name);
}
/* AUTHENTICATION */
if(ip1->autype!=ip2->autype)
{
ifa->autype=ip2->autype;
OSPF_TRACE(D_EVENTS,
"Changing authentication type on interface %s",
ifa->iface->name);
}
if(strncmp(ip1->password,ip2->password,8)!=0)
{
memcpy(ifa->aukey,ip2->password,8);
OSPF_TRACE(D_EVENTS,
"Changing password on interface %s",
ifa->iface->name);
}
/* RXMT */
if(ip1->rxmtint!=ip2->rxmtint)
{
ifa->rxmtint=ip2->rxmtint;
OSPF_TRACE(D_EVENTS,
"Changing retransmit interval on interface %s from %d to %d",
ifa->iface->name,ip1->rxmtint,ip2->rxmtint);
}
/* WAIT */
if(ip1->waitint!=ip2->waitint)
{
ifa->waitint=ip2->waitint;
if(ifa->wait_timer->expires!=0)
tm_start(ifa->wait_timer,ifa->waitint);
OSPF_TRACE(D_EVENTS,
"Changing wait interval on interface %s from %d to %d",
ifa->iface->name,ip1->waitint,ip2->waitint);
}
/* INFTRANS */
if(ip1->inftransdelay!=ip2->inftransdelay)
{
ifa->inftransdelay=ip2->inftransdelay;
OSPF_TRACE(D_EVENTS,
"Changing transmit delay on interface %s from %d to %d",
ifa->iface->name,ip1->inftransdelay,ip2->inftransdelay);
}
/* DEAD COUNT */
if(ip1->deadc!=ip2->deadc)
{
ifa->deadc=ip2->deadc;
OSPF_TRACE(D_EVENTS,
"Changing dead count on interface %s from %d to %d",
ifa->iface->name,ip1->deadc,ip2->deadc);
}
/* NBMA LIST */
/* First remove old */
WALK_LIST_DELSAFE(nb1, nbnx, ifa->nbma_list)
{
found=0;
WALK_LIST(nb2, ip2->nbma_list)
if(ipa_compare(nb1->ip,nb2->ip)==0)
{
found=1;
if(nb1->eligible!=nb2->eligible)
OSPF_TRACE(D_EVENTS,
"Changing neighbor eligibility %I on interface %s",
nb1->ip,ifa->iface->name);
break;
}
if(!found)
{
OSPF_TRACE(D_EVENTS,
"Removing NBMA neighbor %I on interface %s",
nb1->ip,ifa->iface->name);
rem_node(NODE nb1);
mb_free(nb1);
}
}
/* And then add new */
WALK_LIST(nb2, ip2->nbma_list)
{
found=0;
WALK_LIST(nb1, ifa->nbma_list)
if(ipa_compare(nb1->ip,nb2->ip)==0)
{
found=1;
break;
}
if(!found)
{
nb1=mb_alloc(p->pool,sizeof(struct nbma_node));
nb1->ip=nb2->ip;
nb1->eligible=nb2->eligible;
add_tail(&ifa->nbma_list, NODE nb1);
OSPF_TRACE(D_EVENTS,
"Adding NBMA neighbor %I on interface %s",
nb1->ip,ifa->iface->name);
}
}
}
}
NODE ac1=(NODE (ac1))->next;
NODE ac2=(NODE (ac2))->next;
}
if(((NODE (ac1))->next)!=((NODE (ac2))->next))
return 0; /* One is not null */
return 1; /* Everything OK :-) */
}
void
ospf_sh_neigh(struct proto *p, char *iff)
{
struct ospf_iface *ifa=NULL,*f;
struct ospf_neighbor *n;
struct proto_ospf *po=(struct proto_ospf *)p;
if(p->proto_state != PS_UP)
{
cli_msg(-1013,"%s: is not up", p->name);
cli_msg(0,"");
return;
}
if(iff!=NULL)
{
WALK_LIST(f, po->iface_list)
{
if(strcmp(iff,f->iface->name)==0)
{
ifa=f;
break;
}
}
if(ifa==NULL)
{
cli_msg(0,"");
return;
}
cli_msg(-1013,"%s:", p->name);
cli_msg(-1013,"%-12s\t%3s\t%-15s\t%-5s\t%-12s\t%-10s","Router ID","Pri",
" State", "DTime", "Router IP", "Interface");
WALK_LIST(n, ifa->neigh_list) ospf_sh_neigh_info(n);
cli_msg(0,"");
return;
}
cli_msg(-1013,"%s:", p->name);
cli_msg(-1013,"%-12s\t%3s\t%-15s\t%-5s\t%-12s\t%-10s","Router ID","Pri",
" State", "DTime", "Router IP", "Interface");
WALK_LIST(ifa,po->iface_list)
WALK_LIST(n, ifa->neigh_list)
ospf_sh_neigh_info(n);
cli_msg(0,"");
}
void
ospf_sh(struct proto *p)
{
struct ospf_area *oa;
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_iface *ifa;
struct ospf_neighbor *n;
int ifano;
int nno;
int adjno;
if(p->proto_state != PS_UP)
{
cli_msg(-1014,"%s: is not up", p->name);
cli_msg(0,"");
return;
}
cli_msg(-1014,"%s:", p->name);
cli_msg(-1014,"Number of areas: %u", po->areano);
WALK_LIST(oa,po->area_list)
{
cli_msg(-1014,"\tArea: %I (%u) %s", oa->areaid, oa->areaid,
oa->areaid==0 ? "[BACKBONE]" : "");
ifano=0;
nno=0;
adjno=0;
WALK_LIST(ifa, po->iface_list)
{
if(oa==ifa->oa) ifano++;
WALK_LIST(n, ifa->neigh_list)
{
nno++;
if(n->state==NEIGHBOR_FULL) adjno++;
}
}
cli_msg(-1014,"\t\tStub:\t%s", oa->stub ? "Yes" : "No");
cli_msg(-1014,"\t\tRT scheduler tick:\t%u", oa->tick);
cli_msg(-1014,"\t\tNumber of interfaces:\t%u", ifano);
cli_msg(-1014,"\t\tNumber of LSAs in DB:\t%u", oa->gr->hash_entries);
cli_msg(-1014,"\t\tNumber of neighbors:\t%u", nno);
cli_msg(-1014,"\t\tNumber of adjacent neighbors:\t%u", adjno);
if(!EMPTY_LIST(oa->net_list))
{
struct area_net *anet;
cli_msg(-1014,"\t\tArea networks:");
WALK_LIST(anet, oa->net_list)
{
cli_msg(-1014,"\t\t\t%1I/%u\t%s", anet->net, anet->mlen,
anet->hidden ? "Hidden" : "Advertise");
}
}
}
cli_msg(0,"");
}
void
ospf_sh_iface(struct proto *p, char *iff)
{
struct ospf_area *oa;
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_iface *ifa=NULL,*f;
struct ospf_neighbor *n;
int ifano;
int nno;
int adjno;
if(p->proto_state != PS_UP)
{
cli_msg(-1015,"%s: is not up", p->name);
cli_msg(0,"");
return;
}
if(iff!=NULL)
{
WALK_LIST(f, po->iface_list)
{
if(strcmp(iff,f->iface->name)==0)
{
ifa=f;
break;
}
}
if(ifa==NULL)
{
cli_msg(0,"");
return;
}
cli_msg(-1015,"%s:", p->name);
ospf_iface_info(ifa);
cli_msg(0,"");
return;
}
cli_msg(-1015,"%s:", p->name);
WALK_LIST(ifa, po->iface_list) ospf_iface_info(ifa);
cli_msg(0,"");
}
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,
reconfigure: ospf_reconfigure
};