788 lines
20 KiB
C
788 lines
20 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)
|
|
*
|
|
* As OSPF protocol is quite complicated and complex implemenation is
|
|
* split into many files. In |ospf.c| you can find mostly interfaces
|
|
* for communication with nest. (E.g. reconfiguration hooks, shutdown
|
|
* and inicialisation and so on.) In |packet.c| you can find various
|
|
* functions for sending and receiving generic OSPF packet. There are
|
|
* also routins for autentications, checksumming. |Iface.c| contains
|
|
* interface state machine, allocation and deallocation of OSPF's
|
|
* interface data structures. |Neighbor.c| includes neighbor state
|
|
* machine and function for election of Designed Router and Backup
|
|
* Designed router. In |hello.c| there are routines for sending
|
|
* and receiving hello packets as well as functions for maintaining
|
|
* wait times and inactivity timer. |Lsreq.c|, |lsack.c|, |dbdes.c|
|
|
* contains functions for sending and receiving link-state request,
|
|
* link-state acknoledge and database description respectively.
|
|
* In |lsupd.c| there are function for sending and receiving
|
|
* link-state updates and also flooding algoritmus. |Topology.c| is
|
|
* a place where routins for searching LSAs in link-state database,
|
|
* adding and deleting them, there are also functions for originating
|
|
* various types of LSA. (router lsa, net lsa, external lsa) |Rt.c|
|
|
* contains routins for calculating of routing table. |Lsalib.c| is a set
|
|
* of various functions for work with LSAs.
|
|
*
|
|
* Just one instance of protocol is able to hold LSA databases for
|
|
* multiple OSPF areas and exhange routing information between
|
|
* multiple neighbors and calculate routing tables. The core
|
|
* structure is &proto_ospf, to which multiple &ospf_area and
|
|
* &ospf_iface are connected. To &ospf_area is connected
|
|
* &top_hash_graph, which is a dynamic hashing structure that
|
|
* describes link-state database. It allows fast search, adding
|
|
* and deleting. Every area has it's own area_disp() that is
|
|
* responsible for late originating of router LSA, calcutating
|
|
* of routing table and it also ages and flushes LSA database. This
|
|
* function is called in regular intervals.
|
|
* To every &ospf_iface is connected one or more
|
|
* &ospf_neighbors. This structure contains many timers and queues
|
|
* for building adjacency and exchange routing messages.
|
|
*
|
|
* BIRD's OSPF implementation respects RFC2328 in every detail but
|
|
* some of inner function differs. RFC recommends to make a snapshot
|
|
* of link-state database when new adjacency is building and send
|
|
* database description packets based on information of this
|
|
* snapshot. The database can be quite large in some networks so
|
|
* I rather walk through &slist structure which allows me to
|
|
* continue even if actual LSA I worked on is deleted. New
|
|
* LSA are added to the tail of this slist.
|
|
*
|
|
* I also don't build another, new routing table besides the old
|
|
* one because nest helps me. I simply flush all calculated and
|
|
* deleted routes into nest's routing table. It's simplyfies
|
|
* this process and spares 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;
|
|
|
|
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;
|
|
oa->lage=now;
|
|
tm_start(oa->disp_timer,oa->tick);
|
|
oa->calcrt=0;
|
|
oa->origrt=0;
|
|
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;
|
|
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;
|
|
|
|
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!=0)
|
|
{
|
|
if(old->u.ospf.metric2==0) return 0;
|
|
if(new->u.ospf.metric2<old->u.ospf.metric2) return 1;
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
if(old->u.ospf.metric2!=0) return 1;
|
|
if(new->u.ospf.metric1<old->u.ospf.metric1) return 1;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
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, originating of
|
|
* router LSA and routing table calculation
|
|
* @timer - it's called every @ospf_area->tick seconds
|
|
*
|
|
* It ivokes aging and when @ospf_area->origrt is set to 1, start
|
|
* function for origination of router LSA. It also start 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;
|
|
|
|
/* First of all try to age LSA DB */
|
|
ospf_age(oa);
|
|
|
|
/* Now try to originage rt_lsa */
|
|
if(oa->origrt) originate_rt_lsa(oa);
|
|
oa->origrt=0;
|
|
|
|
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
|
|
* @attrs: list of arttributes
|
|
* @pool: pool for alloction of attributes
|
|
*
|
|
* Its quite simple. It does not accept our own routes and decision of
|
|
* import leaves 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 - Finnish of OSPF instance
|
|
* @p: current instance of protocol
|
|
*
|
|
* RFC does not define any action that should be taken befor router
|
|
* shutdown. To make my neighbors react as fast as possible, I send
|
|
* them hello packet with empty neighbor list. They should start
|
|
* theirs 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;
|
|
|
|
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;
|
|
|
|
/* Flush old external LSA */
|
|
WALK_LIST(oa, po->area_list)
|
|
{
|
|
for(i=0;i<MAXNETS;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.metric2==LSINFINITY) ? rte->u.ospf.metric1 :
|
|
rte->u.ospf.metric2);
|
|
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 inteligent. Instance of OSPF
|
|
* will survive change of many constants like hello interval,
|
|
* password change, addition of 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;
|
|
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;
|
|
if(ac1->tick!=ac2->tick)
|
|
{
|
|
WALK_LIST(oa,po->area_list)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* AUTHETICATION */
|
|
if(ip1->autype!=ip2->autype)
|
|
{
|
|
ifa->autype=ip2->autype;
|
|
OSPF_TRACE(D_EVENTS,
|
|
"Changing autentication 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;
|
|
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;
|
|
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; /* Everythink 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);
|
|
}
|
|
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
|
|
};
|
|
|