sk_send_to(ifa->ip_sk,length, n->ip, OSPF_PROTO);
OSPF_TRACE(D_PACKETS, "DB_DES (M) sent to %I via %s.", n->ip,
ifa->iface->name);
- if(n->myimms.bit.ms) tm_start(n->rxmt_timer,ifa->rxmtint);
- else
+ if(! n->myimms.bit.ms)
{
if((n->myimms.bit.m==0) && (n->imms.bit.m==0) &&
(n->state==NEIGHBOR_EXCHANGE))
{
ospf_neigh_sm(n, INM_EXDONE);
- if(n->myimms.bit.ms) tm_stop(n->rxmt_timer);
- else tm_start(n->rxmt_timer,ifa->rxmtint);
}
}
break;
}
}
-void
-rxmt_timer_hook(timer *timer)
-{
- struct ospf_iface *ifa;
- struct proto *p;
- struct ospf_neighbor *n;
-
- n=(struct ospf_neighbor *)timer->data;
- ifa=n->ifa;
- p=(struct proto *)(ifa->proto);
- DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n",
- p->name, ifa->iface->name, n->ip);
- if(n->state<NEIGHBOR_LOADING) ospf_dbdes_tx(n);
- else
- {
- tm_stop(n->rxmt_timer);
- }
-}
-
void
ospf_dbdes_reqladd(struct ospf_dbdes_packet *ps, struct proto *p,
struct ospf_neighbor *n)
n->imms.byte=ps->imms.byte;
OSPF_TRACE(D_PACKETS, "I'm slave to %I.", n->ip);
ospf_neigh_sm(n, INM_NEGDONE);
- tm_stop(n->rxmt_timer);
ospf_dbdes_tx(n);
break;
}
#define _BIRD_OSPF_DBDES_H_
void ospf_dbdes_tx(struct ospf_neighbor *n);
-void rxmt_timer_hook(timer *timer);
void ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size);
/*
* BIRD -- OSPF
*
- * (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
+ * (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "ospf.h"
void
-install_inactim(struct ospf_neighbor *n)
-{
- struct proto *p;
- struct ospf_iface *ifa;
-
- ifa=n->ifa;
- p=(struct proto *)(ifa->proto);
-
- if(n->inactim==NULL)
- {
- n->inactim=tm_new(n->pool);
- n->inactim->data=n;
- n->inactim->randomize=0;
- n->inactim->hook=neighbor_timer_hook;
- n->inactim->recurrent=0;
- DBG("%s: Installing inactivity timer.\n", p->name);
- }
-}
-
-void
-restart_inactim(struct ospf_neighbor *n)
-{
- tm_start(n->inactim,n->ifa->deadc*n->ifa->helloint);
-}
-
-void
-restart_hellotim(struct ospf_iface *ifa)
-{
- tm_start(ifa->hello_timer,ifa->helloint);
-}
-
-void
-restart_polltim(struct ospf_iface *ifa)
-{
- if(ifa->poll_timer)
- tm_start(ifa->poll_timer,ifa->pollint);
-}
-
-void
-restart_waittim(struct ospf_iface *ifa)
-{
- tm_start(ifa->wait_timer,ifa->waitint);
-}
-
-void
-ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
+ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p,
struct ospf_iface *ifa, int size, ip_addr faddr)
{
u32 nrid, *pnrid;
}
OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s.", faddr,
ifa->iface->name);
- pool=rp_new(p->pool, "OSPF Neighbor");
- n=mb_allocz(pool, sizeof(struct ospf_neighbor));
- n->pool=pool;
- add_tail(&ifa->neigh_list, NODE n);
+
+ n = ospf_neighbor_new(ifa);
+
n->rid=nrid;
n->ip=faddr;
n->dr=ps->dr;
ipa_ntoh(n->bdr);
n->priority=ps->priority;
n->options=ps->options;
- n->ifa=ifa;
- n->adj=0;
- n->ldbdes=mb_alloc(pool, ifa->iface->mtu);
- n->state=NEIGHBOR_DOWN;
- install_inactim(n);
- n->rxmt_timer=tm_new(pool);
- n->rxmt_timer->data=n;
- n->rxmt_timer->randomize=0;
- n->rxmt_timer->hook=rxmt_timer_hook;
- n->rxmt_timer->recurrent=ifa->rxmtint;
- DBG("%s: Installing rxmt timer.\n", p->name);
- n->lsrr_timer=tm_new(pool);
- n->lsrr_timer->data=n;
- n->lsrr_timer->randomize=0;
- n->lsrr_timer->hook=lsrr_timer_hook;
- n->lsrr_timer->recurrent=ifa->rxmtint;
- DBG("%s: Installing lsrr timer.\n", p->name);
- init_list(&n->ackl);
- n->ackd_timer=tm_new(pool);
- n->ackd_timer->data=n;
- n->ackd_timer->randomize=0;
- n->ackd_timer->hook=ackd_timer_hook;
- n->ackd_timer->recurrent=ifa->rxmtint/2;
- DBG("%s: Installing ackd timer.\n", p->name);
}
ospf_neigh_sm(n, INM_HELLOREC);
if(ifa->type!=OSPF_IT_NBMA)
{
- if((ifa->priority==0)&&(n->priority>0)) hello_send(NULL,0, n);
+ if((ifa->priority==0)&&(n->priority>0)) ospf_hello_send(NULL, 0, n);
}
ospf_neigh_sm(n, INM_HELLOREC);
}
void
-poll_timer_hook(timer *timer)
-{
- hello_send(timer,1, NULL);
-}
-
-void
-hello_timer_hook(timer *timer)
-{
- hello_send(timer,0, NULL);
-}
-
-void
-hello_send(timer *timer,int poll, struct ospf_neighbor *dirn)
+ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn)
{
struct ospf_iface *ifa;
struct ospf_hello_packet *pkt;
}
OSPF_TRACE(D_PACKETS, "Hello sent via %s",ifa->iface->name);
}
-
-void
-wait_timer_hook(timer *timer)
-{
- struct ospf_iface *ifa;
- struct proto *p;
-
- ifa=(struct ospf_iface *)timer->data;
- p=(struct proto *)(ifa->proto);
- OSPF_TRACE(D_EVENTS, "Wait timer fired on interface %s.",
- ifa->iface->name);
- ospf_int_sm(ifa, ISM_WAITF);
-}
-
/*
* BIRD -- OSPF
*
- * (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
+ * (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*
#ifndef _BIRD_OSPF_HELLO_H_
#define _BIRD_OSPF_HELLO_H_
-void install_inactim(struct ospf_neighbor *n);
-void restart_inactim(struct ospf_neighbor *n);
-void restart_hellotim(struct ospf_iface *ifa);
-void restart_polltim(struct ospf_iface *ifa);
-void restart_waittim(struct ospf_iface *ifa);
-void ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
+void ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p,
struct ospf_iface *ifa, int size, ip_addr faddr);
-void hello_timer_hook(timer *timer);
-void poll_timer_hook(timer *timer);
-void wait_timer_hook(timer *timer);
-void hello_send(timer *timer,int poll, struct ospf_neighbor *dirn);
+void ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn);
#endif /* _BIRD_OSPF_HELLO_H_ */
/*
* BIRD -- OSPF
*
- * (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
+ * (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
char *ospf_it[]={ "broadcast", "nbma", "point-to-point", "virtual link" };
+void
+poll_timer_hook(timer *timer)
+{
+ ospf_hello_send(timer, 1, NULL);
+}
+
+void
+hello_timer_hook(timer *timer)
+{
+ ospf_hello_send(timer, 0, NULL);
+}
+
+void
+wait_timer_hook(timer *timer)
+{
+ struct ospf_iface *ifa;
+ struct proto *p;
+
+ ifa=(struct ospf_iface *)timer->data;
+ p=(struct proto *)(ifa->proto);
+ OSPF_TRACE(D_EVENTS, "Wait timer fired on interface %s.",
+ ifa->iface->name);
+ ospf_int_sm(ifa, ISM_WAITF);
+}
+
+
/**
* iface_chstate - handle changes of interface state
* @ifa: OSPF interface
if(ifa->state==OSPF_IS_DOWN)
{
/* Now, nothing should be adjacent */
- restart_hellotim(ifa);
- restart_polltim(ifa);
+ tm_start(ifa->hello_timer,ifa->helloint);
+
+ if(ifa->poll_timer)
+ tm_start(ifa->poll_timer,ifa->pollint);
+
if((ifa->type==OSPF_IT_PTP) || (ifa->type==OSPF_IT_VLINK))
{
iface_chstate(ifa, OSPF_IS_PTP);
}
else
{
- iface_chstate(ifa, OSPF_IS_WAITING);
- restart_waittim(ifa);
+ iface_chstate(ifa, OSPF_IS_WAITING);
+ tm_start(ifa->wait_timer,ifa->waitint);
}
}
}
{
ifa->orignet=1;
}
+
+void
+ospf_iface_shutdown(struct ospf_iface *ifa)
+{
+ init_list(&ifa->neigh_list);
+ hello_timer_hook(ifa->hello_timer);
+}
+
struct ospf_iface *find_iface(struct proto_ospf *p, struct iface *what);
void ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface);
void ospf_iface_info(struct ospf_iface *ifa);
+void ospf_iface_shutdown(struct ospf_iface *ifa);
void ospf_ifa_add(struct object_lock *lock);
void schedule_net_lsa(struct ospf_iface *ifa);
struct top_hash_entry *
lsa_install_new(struct ospf_lsa_header *lsa, void *body, struct ospf_area *oa)
{
- /* LSA can be temporarrily, but body must be mb_alloced. */
+ /* LSA can be temporarrily, but body must be mb_allocated. */
struct proto *p=&oa->po->proto;
int change=0;
unsigned i;
OSPF_TRACE(D_PACKETS, "LS request sent to: %I", n->rid);
}
-void
-lsrr_timer_hook(timer *timer)
-{
- struct ospf_iface *ifa;
- struct proto *p;
- struct ospf_neighbor *n;
- struct top_hash_entry *en;
-
- n=(struct ospf_neighbor *)timer->data;
- ifa=n->ifa;
- p=(struct proto *)(ifa->proto);
-
- DBG("%s: LSRR timer fired on interface %s for neigh: %I.\n",
- p->name, ifa->iface->name, n->rid);
- if(n->state<NEIGHBOR_FULL) ospf_lsreq_tx(n);
- else
- {
- if(!EMPTY_SLIST(n->lsrtl))
- {
- list uplist;
- slab *upslab;
- struct l_lsr_head *llsh;
-
- init_list(&uplist);
- upslab=sl_new(n->pool,sizeof(struct l_lsr_head));
-
- WALK_SLIST(SNODE en,n->lsrtl)
- {
- if((SNODE en)->next==(SNODE en)) bug("RTList is cycled");
- llsh=sl_alloc(upslab);
- llsh->lsh.id=en->lsa.id;
- llsh->lsh.rt=en->lsa.rt;
- llsh->lsh.type=en->lsa.type;
- DBG("Working on ID: %I, RT: %I, Type: %u\n",
- en->lsa.id, en->lsa.rt, en->lsa.type);
- add_tail(&uplist, NODE llsh);
- }
- ospf_lsupd_tx_list(n, &uplist);
- rfree(upslab);
- }
- }
-}
-
void
ospf_lsreq_rx(struct ospf_lsreq_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size)
#define _BIRD_OSPF_LSREQ_H_
void ospf_lsreq_tx(struct ospf_neighbor *n);
-void lsrr_timer_hook(timer *timer);
void ospf_lsreq_rx(struct ospf_lsreq_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size);
/*
* BIRD -- OSPF
*
- * (c) 2000 Ondrej Filip <feela@network.cz>
+ * (c) 2000-2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "ospf.h"
+/**
+ * flood_lsa - send received or generated lsa to the neighbors
+ * @n: neighbor than sent this lsa (or NULL if generated)
+ * @hn: LSA header
+ * @hh: LSA header
+ * @po: actual instance of OSPF protocol
+ * @iff: interface which received this LSA (or NULL if LSA is generated)
+ * @oa: ospf_area which is the LSA generated for
+ * @rtl: add this LSA into retransmission list
+ *
+ * Calculation of internal paths in an area is described in 16.1 of RFC 2328.
+ * It's based on Dijkstra's shortest path tree algorithms.
+ * RFC recommends to add ASBR routers into routing table. I don't do this
+ * and latter parts of routing table calculation look directly into LSA
+ * Database. This function is invoked from area_disp().
+ */
+
int
flood_lsa(struct ospf_neighbor *n, struct ospf_lsa_header *hn,
struct ospf_lsa_header *hh, struct proto_ospf *po, struct ospf_iface *iff,
}
}
}
+
if(nn==n) continue;
- if(rtl!=0)
+
+ if(rtl)
{
if((en=ospf_hash_find_header(nn->lsrth, hh))==NULL)
{
ospf_hash_delete(nn->lsrth, en);
}
}
+
ret=1;
}
- if(ret==0) continue;
+ if(ret==0) continue; /* pg 150 (2) */
if(ifa==iff)
{
- if((n->rid==iff->drid)||n->rid==iff->bdrid) continue;
- if(iff->state==OSPF_IS_BACKUP) continue;
+ if((n->rid==iff->drid)||n->rid==iff->bdrid) continue; /* pg 150 (3) */
+ if(iff->state==OSPF_IS_BACKUP) continue; /* pg 150 (4) */
retval=1;
}
fill_ospf_pkt_hdr(ifa, pk, LSUPD_P);
pk->lsano=htonl(1);
- if(hn!=NULL)
+
+ if(hn)
{
+ struct ospf_lsa_header *lh = (struct ospf_lsa_header *)(pk+1);
+ u16 age = ntohs(lh->age);
+
memcpy(pk+1,hn,ntohs(hn->length));
len=sizeof(struct ospf_lsupd_packet)+ntohs(hn->length);
+ age += ifa->inftransdelay;
+ if(age>LSA_MAXAGE) age = LSA_MAXAGE;
+ lh->age = htons(age);
}
else
{
u8 *help;
struct top_hash_entry *en;
- struct ospf_lsa_header *lh;
- u16 age;
+ struct ospf_lsa_header *lh = (struct ospf_lsa_header *)(pk+1);
+ u16 age = hh->age;
- lh=(struct ospf_lsa_header *)(pk+1);
htonlsah(hh,lh);
- age=hh->age;
age+=ifa->inftransdelay;
if(age>LSA_MAXAGE) age=LSA_MAXAGE;
lh->age=htons(age);
-sizeof(struct ospf_lsa_header));
len=hh->length+sizeof(struct ospf_lsupd_packet);
}
+
op->length=htons(len);
ospf_pkt_finalize(ifa, op);
OSPF_TRACE(D_PACKETS, "LS upd flooded via %s", ifa->iface->name);
nrid);
return ;
}
+
if(n->state<NEIGHBOR_EXCHANGE)
{
- OSPF_TRACE(D_PACKETS,"Received lsupd in lesser state than EXCHANGE from (%I)",
+ OSPF_TRACE(D_PACKETS, "Received lsupd in lesser state than EXCHANGE from (%I)",
n->ip);
return;
}
+
if(size<=(sizeof(struct ospf_lsupd_packet)+sizeof(struct ospf_lsa_header)))
{
- OSPF_TRACE(D_PACKETS, "Received lsupd from %I is too short!", n->ip);
+ log(L_WARN "Received lsupd from %I is too short!", n->ip);
return;
}
OSPF_TRACE(D_PACKETS, "Received LS upd from %I", n->ip);
- ospf_neigh_sm(n, INM_HELLOREC);
+ ospf_neigh_sm(n, INM_HELLOREC); /* Questionable */
lsa=(struct ospf_lsa_header *)(ps+1);
area=htonl(ps->ospf_packet.areaid);
oa=ospf_find_area((struct proto_ospf *)p,area);
- for(i=0;i<ntohl(ps->lsano);i++,
+
+ for(i=0; i<ntohl(ps->lsano); i++,
lsa=(struct ospf_lsa_header *)(((u8 *)lsa)+ntohs(lsa->length)))
{
struct ospf_lsa_header lsatmp;
struct top_hash_entry *lsadb;
- u16 lenn;
int diff=((u8 *)lsa)-((u8 *)ps);
- u16 chsum;
-
- if(((diff+sizeof(struct ospf_lsa_header))>=size) ||
- ((ntohs(lsa->length)+diff)>size))
- log("%s: Received lsupd from %I is too short.", p->name,n->ip);
+ u16 chsum, lenn = ntohs(lsa->length);
- lenn=ntohs(lsa->length);
+ if(((diff+sizeof(struct ospf_lsa_header))>=size) || ((lenn+diff)>size))
+ {
+ log(L_WARN "Received lsupd from %I is too short!", n->ip);
+ ospf_neigh_sm(n, INM_BADLSREQ);
+ break;
+ }
if((lenn<=sizeof(struct ospf_lsa_header))||(lenn!=(4*(lenn/4))))
{
- log("Received LSA with bad length");
- ospf_neigh_sm(n,INM_BADLSREQ);
+ log(L_WARN "Received LSA from %I with bad length", n->ip);
+ ospf_neigh_sm(n, INM_BADLSREQ);
break;
}
+
/* pg 143 (1) */
chsum=lsa->checksum;
if(chsum!=lsasum_check(lsa,NULL,po))
{
- log("Received bad lsa checksum from %I",n->rid);
+ log(L_WARN "Received bad lsa checksum from %I", n->ip);
continue;
}
+
/* pg 143 (2) */
if((lsa->type<LSA_T_RT)||(lsa->type>LSA_T_EXT))
{
- log("Unknown LSA type from %I",n->rid);
+ log(L_WARN "Unknown LSA type from %I", n->ip);
continue;
}
+
/* pg 143 (3) */
if((lsa->type==LSA_T_EXT)&&oa->stub)
{
- log("Received External LSA in stub area from %I",n->rid);
+ log(L_WARN "Received External LSA in stub area from %I", n->ip);
continue;
}
+
ntohlsah(lsa,&lsatmp);
+
DBG("Update Type: %u ID: %I RT: %I, Sn: 0x%08x Age: %u, Sum: %u\n",
lsatmp.type, lsatmp.id, lsatmp.rt, lsatmp.sn, lsatmp.age,
lsatmp.checksum);
+
lsadb=ospf_hash_find_header(oa->gr, &lsatmp);
+
+#ifdef LOCAL_DEBUG
if(lsadb)
DBG("I have Type: %u ID: %I RT: %I, Sn: 0x%08x Age: %u, Sum: %u\n",
lsadb->lsa.type, lsadb->lsa.id, lsadb->lsa.rt, lsadb->lsa.sn,
lsadb->lsa.age, lsadb->lsa.checksum);
+#endif
/* pg 143 (4) */
- if((lsatmp.age==LSA_MAXAGE)&&(lsadb==NULL))
+ if((lsatmp.age==LSA_MAXAGE)&&(lsadb==NULL)&&can_flush_lsa(oa))
{
- int flag=0;
- struct ospf_iface *ifatmp;
-
- if(can_flush_lsa(oa))
- {
- ospf_lsack_direct_tx(n,lsa);
- continue;
- }
+ ospf_lsack_direct_tx(n,lsa);
+ continue;
}
+
/* pg 144 (5) */
if((lsadb==NULL)||(lsa_comp(&lsatmp,&lsadb->lsa)==CMP_NEWER))
{
- struct ospf_iface *ift=NULL;
- void *body;
- struct ospf_iface *nifa;
- int self=0;
-
- DBG("PG143(5): Received LSA is newer\n");
-
- if(lsatmp.rt==p->cf->global->router_id) self=1;
-
- if(lsatmp.type==LSA_T_NET)
- {
- WALK_LIST(nifa,po->iface_list)
- {
- if(ipa_compare(nifa->iface->addr->ip,ipa_from_u32(lsatmp.id))==0)
- {
- self=1;
- break;
- }
- }
- }
-
- if(self)
- {
- struct top_hash_entry *en;
-
- if((lsatmp.age==LSA_MAXAGE)&&(lsatmp.sn==LSA_MAXSEQNO))
- {
- ospf_lsack_direct_tx(n,lsa);
- continue;
- }
-
- lsatmp.age=LSA_MAXAGE;
- lsatmp.sn=LSA_MAXSEQNO;
- lsa->age=htons(LSA_MAXAGE);
- lsa->sn=htonl(LSA_MAXSEQNO);
- OSPF_TRACE(D_EVENTS, "Premature aging self originated lsa.");
- OSPF_TRACE(D_EVENTS, "Type: %d, Id: %I, Rt: %I",lsatmp.type,
- lsatmp.id, lsatmp.rt);
- lsasum_check(lsa,(lsa+1),po);
- lsatmp.checksum=ntohs(lsa->checksum);
- flood_lsa(NULL,lsa,&lsatmp,po,NULL,oa,0);
- if(en=ospf_hash_find_header(oa->gr,&lsatmp))
- {
- flood_lsa(NULL,NULL,&en->lsa,po,NULL,oa,1);
- }
- continue;
- }
+ struct ospf_iface *ift=NULL;
+ void *body;
+ struct ospf_iface *nifa;
+ int self = (lsatmp.rt == p->cf->global->router_id);
+
+ DBG("PG143(5): Received LSA is newer\n");
+
+ if(lsatmp.type==LSA_T_NET)
+ {
+ WALK_LIST(nifa,po->iface_list)
+ {
+ if(ipa_compare(nifa->iface->addr->ip,ipa_from_u32(lsatmp.id))==0)
+ {
+ self=1;
+ break;
+ }
+ }
+ }
+
+ if(self)
+ {
+ struct top_hash_entry *en;
+
+ if((lsatmp.age==LSA_MAXAGE)&&(lsatmp.sn==LSA_MAXSEQNO))
+ {
+ ospf_lsack_direct_tx(n,lsa);
+ continue;
+ }
+
+ lsatmp.age=LSA_MAXAGE;
+ lsatmp.sn=LSA_MAXSEQNO;
+ lsa->age=htons(LSA_MAXAGE);
+ lsa->sn=htonl(LSA_MAXSEQNO);
+ OSPF_TRACE(D_EVENTS, "Premature aging self originated lsa.");
+ OSPF_TRACE(D_EVENTS, "Type: %d, Id: %I, Rt: %I",lsatmp.type,
+ lsatmp.id, lsatmp.rt);
+ lsasum_check(lsa,(lsa+1),po);
+ lsatmp.checksum=ntohs(lsa->checksum);
+ flood_lsa(NULL,lsa,&lsatmp,po,NULL,oa,0);
+ if(en=ospf_hash_find_header(oa->gr,&lsatmp))
+ {
+ flood_lsa(NULL,NULL,&en->lsa,po,NULL,oa,1);
+ }
+ continue;
+ }
/* pg 144 (5a) */
if(lsadb && ((now-lsadb->inst_t)<=MINLSARRIVAL))
ospf_lsupd_tx_list(n, &l);
}
}
+
if(n->state==NEIGHBOR_LOADING)
{
ospf_lsreq_tx(n); /* Send me another part of database */
/*
* BIRD -- OSPF
*
- * (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
+ * (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
"adjacency ok?", "sequence mismatch", "1-way received", "kill neighbor",
"inactivity timer", "line down" };
+
+void neighbor_timer_hook(timer *timer);
+void rxmt_timer_hook(timer *timer);
+
+
+
+struct ospf_neighbor *
+ospf_neighbor_new(struct ospf_iface *ifa)
+{
+ struct proto *p = (struct proto *)(ifa->proto);
+ struct pool *pool = rp_new(p->pool, "OSPF Neighbor");
+ struct ospf_neighbor *n = mb_allocz(pool, sizeof(struct ospf_neighbor));
+
+ n->pool = pool;
+ n->ifa = ifa;
+ add_tail(&ifa->neigh_list, NODE n);
+ n->adj = 0;
+ n->ldbdes=mb_alloc(pool, ifa->iface->mtu);
+ n->state=NEIGHBOR_DOWN;
+
+ n->inactim = tm_new(pool);
+ n->inactim->data = n;
+ n->inactim->randomize = 0;
+ n->inactim->hook = neighbor_timer_hook;
+ n->inactim->recurrent = 0;
+ DBG("%s: Installing inactivity timer.\n", p->name);
+
+ n->rxmt_timer = tm_new(pool);
+ n->rxmt_timer->data = n;
+ n->rxmt_timer->randomize = 0;
+ n->rxmt_timer->hook = rxmt_timer_hook;
+ n->rxmt_timer->recurrent = ifa->rxmtint;
+ s_init_list(&(n->lsrql));
+ n->lsrqh = ospf_top_new(pool, n->ifa->proto);
+ s_init_list(&(n->lsrtl));
+ n->lsrth = ospf_top_new(pool, n->ifa->proto);
+ s_init(&(n->dbsi), &(n->ifa->oa->lsal));
+ s_init(&(n->lsrqi), &(n->lsrql));
+ s_init(&(n->lsrti), &(n->lsrtl));
+ tm_start(n->rxmt_timer,n->ifa->rxmtint);
+ DBG("%s: Installing rxmt timer.\n", p->name);
+
+ n->ackd_timer = tm_new(pool);
+ n->ackd_timer->data = n;
+ n->ackd_timer->randomize = 0;
+ n->ackd_timer->hook = ackd_timer_hook;
+ n->ackd_timer->recurrent = ifa->rxmtint/2;
+ init_list(&n->ackl);
+ tm_start(n->ackd_timer,n->ifa->rxmtint/2);
+ DBG("%s: Installing ackd timer.\n", p->name);
+
+ return(n);
+}
+
/**
* neigh_chstate - handles changes related to new or lod state of neighbor
* @n: OSPF neighbor
schedule_rt_lsa(ifa->oa);
schedule_net_lsa(ifa);
}
- if(oldstate>=NEIGHBOR_EXSTART && state<NEIGHBOR_EXSTART)
- {
- /* Stop RXMT timer */
- tm_stop(n->rxmt_timer);
- }
if(state==NEIGHBOR_EXSTART)
{
if(n->adj==0) /* First time adjacency */
n->myimms.bit.ms=1;
n->myimms.bit.m=1;
n->myimms.bit.i=1;
- tm_start(n->rxmt_timer,1); /* Or some other number ? */
}
- if(state<NEIGHBOR_EXCHANGE) tm_stop(n->lsrr_timer);
- if(state<NEIGHBOR_EXSTART) tm_stop(n->rxmt_timer);
if(state>NEIGHBOR_EXSTART) n->myimms.bit.i=0;
}
}
{
case NEIGHBOR_ATTEMPT:
case NEIGHBOR_DOWN:
- neigh_chstate(n,NEIGHBOR_INIT);
+ neigh_chstate(n, NEIGHBOR_INIT);
default:
- restart_inactim(n);
+ tm_start(n->inactim, n->ifa->deadc*n->ifa->helloint); /* Restart inactivity timer */
break;
}
break;
rem_node(NODE no);
mb_free(no);
}
- s_init_list(&(n->lsrql));
- if(n->lsrqh) ospf_top_free(n->lsrqh);
- n->lsrqh=ospf_top_new(n->pool, n->ifa->proto);
- s_init_list(&(n->lsrtl));
- if(n->lsrth) ospf_top_free(n->lsrth);
- n->lsrth=ospf_top_new(n->pool, n->ifa->proto);
- s_init(&(n->dbsi), &(n->ifa->oa->lsal));
- s_init(&(n->lsrqi), &(n->lsrql));
- s_init(&(n->lsrti), &(n->lsrtl));
- tm_start(n->lsrr_timer,n->ifa->rxmtint);
- tm_start(n->ackd_timer,n->ifa->rxmtint/2);
}
else bug("NEGDONE and I'm not in EXSTART?");
break;
cli_msg(-1013,"%-1I\t%3u\t%s/%s\t%-5s\t%-1I\t%-10s",n->rid, n->priority,
ospf_ns[n->state], pos, etime, n->ip,ifa->iface->name);
}
+
+void
+rxmt_timer_hook(timer *timer)
+{
+ struct ospf_neighbor *n = (struct ospf_neighbor *)timer->data;
+ struct ospf_iface *ifa = n->ifa;
+ struct proto *p = (struct proto *)(ifa->proto);
+ struct top_hash_entry *en;
+
+ DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n",
+ p->name, ifa->iface->name, n->ip);
+ if (n->state < NEIGHBOR_LOADING) ospf_dbdes_tx(n);
+
+ if(n->state < NEIGHBOR_FULL) ospf_lsreq_tx(n);
+ else
+ {
+ if(!EMPTY_SLIST(n->lsrtl))
+ {
+ list uplist;
+ slab *upslab;
+ struct l_lsr_head *llsh;
+
+ init_list(&uplist);
+ upslab=sl_new(n->pool,sizeof(struct l_lsr_head));
+
+ WALK_SLIST(SNODE en,n->lsrtl)
+ {
+ if((SNODE en)->next==(SNODE en)) bug("RTList is cycled");
+ llsh=sl_alloc(upslab);
+ llsh->lsh.id=en->lsa.id;
+ llsh->lsh.rt=en->lsa.rt;
+ llsh->lsh.type=en->lsa.type;
+ DBG("Working on ID: %I, RT: %I, Type: %u\n",
+ en->lsa.id, en->lsa.rt, en->lsa.type);
+ add_tail(&uplist, NODE llsh);
+ }
+ ospf_lsupd_tx_list(n, &uplist);
+ rfree(upslab);
+ }
+ }
+}
+
/*
* BIRD -- OSPF
*
- * (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
+ * (c) 1999 - 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*
#ifndef _BIRD_OSPF_NEIGHBOR_H_
#define _BIRD_OSPF_NEIGHBOR_H_
+struct ospf_neighbor *ospf_neighbor_new(struct ospf_iface *ifa);
void neigh_chstate(struct ospf_neighbor *n, u8 state);
struct ospf_neighbor *electbdr(list nl);
struct ospf_neighbor *electdr(list nl);
-int can_do_adj(struct ospf_neighbor *n);
-void tryadj(struct ospf_neighbor *n, struct proto *p);
void ospf_neigh_sm(struct ospf_neighbor *n, int event);
void bdr_election(struct ospf_iface *ifa);
struct ospf_neighbor *find_neigh(struct ospf_iface *ifa, u32 rid);
struct ospf_neighbor *find_neigh_noifa(struct proto_ospf *po, u32 rid);
struct ospf_area *ospf_find_area(struct proto_ospf *po, u32 aid);
-void neighbor_timer_hook(timer *timer);
void ospf_neigh_remove(struct ospf_neighbor *n);
void ospf_sh_neigh_info(struct ospf_neighbor *n);
+
#endif /* _BIRD_OSPF_NEIGHBOR_H_ */
/* And send to all my neighbors 1WAY */
WALK_LIST(ifa, po->iface_list)
- {
- init_list(&ifa->neigh_list);
- hello_timer_hook(ifa->hello_timer);
- }
+ ospf_iface_shutdown(ifa);
return PS_DOWN;
}
struct top_graph *lsrth;
void *ldbdes; /* Last database description packet */
timer *rxmt_timer; /* RXMT timer */
- timer *lsrr_timer; /* Link state request retransmition timer */
list ackl;
timer *ackd_timer; /* Delayed ack timer */
};
{
case HELLO_P:
DBG ("%s: Hello received.\n", p->name);
- ospf_hello_rx ((struct ospf_hello_packet *) ps, p, ifa, size,
+ ospf_hello_receive((struct ospf_hello_packet *) ps, p, ifa, size,
sk->faddr);
break;
case DBDES_P:
projects / thirdparty / bird.git / commitdiff
