Jerry/bird
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

dbdes indent an minor changes.

Browse source
This commit is contained in:
Ondrej Filip 2004-06-04 17:49:25 +00:00
parent 85305e5d8f
commit 12bed559ff
4 changed files with 288 additions and 285 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

260
proto/ospf/dbdes.c
View file

@ -9,7 +9,7 @@
#include "ospf.h" #include "ospf.h"
/** /**
* ospf_dbdes_tx - transmit database description packet * ospf_dbdes_send - transmit database description packet
* @n: neighbor * @n: neighbor
* *
* Sending of a database description packet is described in 10.6 of RFC 2328. * Sending of a database description packet is described in 10.6 of RFC 2328.
@ -19,99 +19,98 @@
* of the buffer. * of the buffer.
*/ */
void void
ospf_dbdes_tx(struct ospf_neighbor *n) ospf_dbdes_send(struct ospf_neighbor *n)
{ {
struct ospf_dbdes_packet *pkt; struct ospf_dbdes_packet *pkt;
struct ospf_packet *op; struct ospf_packet *op;
struct ospf_iface *ifa=n->ifa; struct ospf_iface *ifa = n->ifa;
struct ospf_area *oa=ifa->oa; struct ospf_area *oa = ifa->oa;
u16 length; u16 length;
struct proto *p; struct proto *p = (struct proto *) (ifa->proto);
u16 i,j; u16 i, j;
u8 *aa,*bb; u8 *aa, *bb;
if((oa->rt==NULL)||(EMPTY_LIST(oa->lsal))) originate_rt_lsa(oa); if ((oa->rt == NULL) || (EMPTY_LIST(oa->lsal)))
originate_rt_lsa(oa);
p=(struct proto *)(ifa->proto); switch (n->state)
switch(n->state)
{ {
case NEIGHBOR_EXSTART: /* Send empty packets */ case NEIGHBOR_EXSTART: /* Send empty packets */
n->myimms.bit.i=1; n->myimms.bit.i = 1;
pkt=(struct ospf_dbdes_packet *)(ifa->ip_sk->tbuf); pkt = (struct ospf_dbdes_packet *) (ifa->ip_sk->tbuf);
op=(struct ospf_packet *)pkt; op = (struct ospf_packet *) pkt;
fill_ospf_pkt_hdr(ifa, pkt, DBDES_P); fill_ospf_pkt_hdr(ifa, pkt, DBDES_P);
pkt->iface_mtu=htons(ifa->iface->mtu); /* FIXME NOT for VLINK! */ pkt->iface_mtu = htons(ifa->iface->mtu); /* FIXME NOT for VLINK! */
pkt->options= ifa->options; pkt->options = ifa->options;
pkt->imms=n->myimms; pkt->imms = n->myimms;
pkt->ddseq=htonl(n->dds); pkt->ddseq = htonl(n->dds);
length=sizeof(struct ospf_dbdes_packet); length = sizeof(struct ospf_dbdes_packet);
op->length=htons(length); op->length = htons(length);
ospf_pkt_finalize(ifa, op); ospf_pkt_finalize(ifa, op);
sk_send_to(ifa->ip_sk,length, n->ip, OSPF_PROTO); sk_send_to(ifa->ip_sk, length, n->ip, OSPF_PROTO);
OSPF_TRACE(D_PACKETS, "DB_DES (I) sent to %I via %s.", n->ip, OSPF_TRACE(D_PACKETS, "DB_DES (I) sent to %I via %s.", n->ip,
ifa->iface->name); ifa->iface->name);
break; break;
case NEIGHBOR_EXCHANGE: case NEIGHBOR_EXCHANGE:
n->myimms.bit.i=0; n->myimms.bit.i = 0;
if(((n->myimms.bit.ms) && (n->dds==n->ddr+1)) || if (((n->myimms.bit.ms) && (n->dds == n->ddr + 1)) ||
((!(n->myimms.bit.ms)) && (n->dds==n->ddr))) ((!(n->myimms.bit.ms)) && (n->dds == n->ddr)))
{ {
snode *sn; /* Send next */ snode *sn; /* Send next */
struct ospf_lsa_header *lsa; struct ospf_lsa_header *lsa;
pkt=n->ldbdes; pkt = n->ldbdes;
op=(struct ospf_packet *)pkt; op = (struct ospf_packet *) pkt;
fill_ospf_pkt_hdr(ifa, pkt, DBDES_P); fill_ospf_pkt_hdr(ifa, pkt, DBDES_P);
pkt->iface_mtu=htons(ifa->iface->mtu); pkt->iface_mtu = htons(ifa->iface->mtu);
pkt->options= ifa->options; pkt->options = ifa->options;
pkt->ddseq=htonl(n->dds); pkt->ddseq = htonl(n->dds);
j=i=(ifa->iface->mtu-sizeof(struct ospf_dbdes_packet)-SIPH)/ j = i = (ifa->iface->mtu - sizeof(struct ospf_dbdes_packet) - SIPH) / sizeof(struct ospf_lsa_header); /* Number of possible lsaheaders to send */
sizeof(struct ospf_lsa_header); /* Number of possible lsaheaders to send */ lsa = (n->ldbdes + sizeof(struct ospf_dbdes_packet));
lsa=(n->ldbdes+sizeof(struct ospf_dbdes_packet));
if(n->myimms.bit.m) if (n->myimms.bit.m)
{ {
sn=s_get(&(n->dbsi)); sn = s_get(&(n->dbsi));
DBG("Number of LSA: %d\n", j); DBG("Number of LSA: %d\n", j);
for(;i>0;i--) for (; i > 0; i--)
{ {
struct top_hash_entry *en; struct top_hash_entry *en;
en=(struct top_hash_entry *)sn; en = (struct top_hash_entry *) sn;
htonlsah(&(en->lsa), lsa); htonlsah(&(en->lsa), lsa);
DBG("Working on: %d\n", i); DBG("Working on: %d\n", i);
DBG("\tX%01x %-1I %-1I %p\n", en->lsa.type, en->lsa.id, DBG("\tX%01x %-1I %-1I %p\n", en->lsa.type, en->lsa.id,
en->lsa.rt, en->lsa_body); en->lsa.rt, en->lsa_body);
if(sn==STAIL(n->ifa->oa->lsal)) if (sn == STAIL(n->ifa->oa->lsal))
{ {
i--; i--;
break; /* Should set some flag? */ break; /* Should set some flag? */
} }
sn=sn->next; sn = sn->next;
lsa++; lsa++;
} }
if(sn==STAIL(n->ifa->oa->lsal)) if (sn == STAIL(n->ifa->oa->lsal))
{ {
DBG("Number of LSA NOT sent: %d\n", i); DBG("Number of LSA NOT sent: %d\n", i);
DBG("M bit unset.\n"); DBG("M bit unset.\n");
n->myimms.bit.m=0; /* Unset more bit */ n->myimms.bit.m = 0; /* Unset more bit */
} }
else s_put(&(n->dbsi),sn); else
s_put(&(n->dbsi), sn);
} }
pkt->imms.byte=n->myimms.byte; pkt->imms.byte = n->myimms.byte;
length=(j-i)*sizeof(struct ospf_lsa_header)+ length = (j - i) * sizeof(struct ospf_lsa_header) +
sizeof(struct ospf_dbdes_packet); sizeof(struct ospf_dbdes_packet);
op->length=htons(length); op->length = htons(length);
ospf_pkt_finalize(ifa, op); ospf_pkt_finalize(ifa, op);
DBG("%s: DB_DES (M) prepared for %I.\n", p->name, n->ip); DBG("%s: DB_DES (M) prepared for %I.\n", p->name, n->ip);
@ -119,23 +118,23 @@ ospf_dbdes_tx(struct ospf_neighbor *n)
case NEIGHBOR_LOADING: case NEIGHBOR_LOADING:
case NEIGHBOR_FULL: case NEIGHBOR_FULL:
aa=ifa->ip_sk->tbuf; aa = ifa->ip_sk->tbuf;
bb=n->ldbdes; bb = n->ldbdes;
op=n->ldbdes; op = n->ldbdes;
length=ntohs(op->length); length = ntohs(op->length);
for(i=0; i<length; i++) for (i = 0; i < length; i++)
{ {
*(aa+i)=*(bb+i); /* Copy last sent packet again */ *(aa + i) = *(bb + i); /* Copy last sent packet again */
} }
sk_send_to(ifa->ip_sk,length, n->ip, OSPF_PROTO); 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, OSPF_TRACE(D_PACKETS, "DB_DES (M) sent to %I via %s.", n->ip,
ifa->iface->name); ifa->iface->name);
if(! n->myimms.bit.ms) if (!n->myimms.bit.ms)
{ {
if((n->myimms.bit.m==0) && (n->imms.bit.m==0) && if ((n->myimms.bit.m == 0) && (n->imms.bit.m == 0) &&
(n->state==NEIGHBOR_EXCHANGE)) (n->state == NEIGHBOR_EXCHANGE))
{ {
ospf_neigh_sm(n, INM_EXDONE); ospf_neigh_sm(n, INM_EXDONE);
} }
@ -148,34 +147,33 @@ ospf_dbdes_tx(struct ospf_neighbor *n)
} }
void void
ospf_dbdes_reqladd(struct ospf_dbdes_packet *ps, struct proto *p, ospf_dbdes_reqladd(struct ospf_dbdes_packet *ps, struct ospf_neighbor *n)
struct ospf_neighbor *n)
{ {
struct ospf_lsa_header *plsa,lsa; struct ospf_lsa_header *plsa, lsa;
struct top_hash_entry *he,*sn; struct top_hash_entry *he, *sn;
struct top_graph *gr; struct top_graph *gr = n->ifa->oa->gr;
struct ospf_packet *op; struct ospf_packet *op;
int i,j; struct proto *p = (struct proto *) n->ifa->proto;
int i, j;
gr=n->ifa->oa->gr; op = (struct ospf_packet *) ps;
op=(struct ospf_packet *)ps;
plsa=(void *)(ps+1); plsa = (void *) (ps + 1);
j=(ntohs(op->length)-sizeof(struct ospf_dbdes_packet))/ j = (ntohs(op->length) - sizeof(struct ospf_dbdes_packet)) /
sizeof( struct ospf_lsa_header); sizeof(struct ospf_lsa_header);
for(i=0;i<j;i++) for (i = 0; i < j; i++)
{ {
ntohlsah(plsa+i, &lsa); ntohlsah(plsa + i, &lsa);
if(((he=ospf_hash_find(gr,lsa.id,lsa.rt,lsa.type))==NULL)|| if (((he = ospf_hash_find(gr, lsa.id, lsa.rt, lsa.type)) == NULL) ||
(lsa_comp(&lsa, &(he->lsa))==1)) (lsa_comp(&lsa, &(he->lsa)) == 1))
{ {
/* Is this condition necessary? */ /* Is this condition necessary? */
if(ospf_hash_find(n->lsrqh,lsa.id,lsa.rt,lsa.type)==NULL) if (ospf_hash_find(n->lsrqh, lsa.id, lsa.rt, lsa.type) == NULL)
{ {
sn=ospf_hash_get(n->lsrqh,lsa.id,lsa.rt,lsa.type); sn = ospf_hash_get(n->lsrqh, lsa.id, lsa.rt, lsa.type);
ntohlsah(plsa+i, &(sn->lsa)); ntohlsah(plsa + i, &(sn->lsa));
s_add_tail(&(n->lsrql), SNODE sn); s_add_tail(&(n->lsrql), SNODE sn);
} }
} }
@ -183,34 +181,33 @@ ospf_dbdes_reqladd(struct ospf_dbdes_packet *ps, struct proto *p,
} }
void void
ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p, ospf_dbdes_receive(struct ospf_dbdes_packet *ps,
struct ospf_iface *ifa, u16 size) struct ospf_iface *ifa, u16 size)
{ {
u32 nrid, myrid; struct proto *p = (struct proto *) ifa->proto;
u32 nrid, myrid = p->cf->global->router_id;
struct ospf_neighbor *n; struct ospf_neighbor *n;
nrid=ntohl(((struct ospf_packet *)ps)->routerid); nrid = ntohl(((struct ospf_packet *) ps)->routerid);
myrid=p->cf->global->router_id;
if((n=find_neigh(ifa, nrid))==NULL) if ((n = find_neigh(ifa, nrid)) == NULL)
{ {
OSPF_TRACE(D_PACKETS, "Received dbdes from unknown neigbor! %I.", OSPF_TRACE(D_PACKETS, "Received dbdes from unknown neigbor! %I.", nrid);
nrid); return;
return ;
} }
if(ifa->iface->mtu<size) if (ifa->iface->mtu < size)
{ {
OSPF_TRACE(D_PACKETS, "Received dbdes larger than MTU from %I!", n->ip); OSPF_TRACE(D_PACKETS, "Received dbdes larger than MTU from %I!", n->ip);
return ; return;
} }
OSPF_TRACE(D_PACKETS, "Received dbdes from %I via %s.", n->ip, OSPF_TRACE(D_PACKETS, "Received dbdes from %I via %s.", n->ip,
ifa->iface->name); ifa->iface->name);
ospf_neigh_sm(n, INM_HELLOREC); ospf_neigh_sm(n, INM_HELLOREC);
switch(n->state) switch (n->state)
{ {
case NEIGHBOR_DOWN: case NEIGHBOR_DOWN:
case NEIGHBOR_ATTEMPT: case NEIGHBOR_ATTEMPT:
@ -219,32 +216,32 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
break; break;
case NEIGHBOR_INIT: case NEIGHBOR_INIT:
ospf_neigh_sm(n, INM_2WAYREC); ospf_neigh_sm(n, INM_2WAYREC);
if(n->state!=NEIGHBOR_EXSTART) return; if (n->state != NEIGHBOR_EXSTART)
return;
case NEIGHBOR_EXSTART: case NEIGHBOR_EXSTART:
if((ps->imms.bit.m && ps->imms.bit.ms && ps->imms.bit.i) if ((ps->imms.bit.m && ps->imms.bit.ms && ps->imms.bit.i)
&& (n->rid > myrid) && && (n->rid > myrid) && (size == sizeof(struct ospf_dbdes_packet)))
(size == sizeof(struct ospf_dbdes_packet)))
{ {
/* I'm slave! */ /* I'm slave! */
n->dds=ntohl(ps->ddseq); n->dds = ntohl(ps->ddseq);
n->ddr=ntohl(ps->ddseq); n->ddr = ntohl(ps->ddseq);
n->options=ps->options; n->options = ps->options;
n->myimms.bit.ms=0; n->myimms.bit.ms = 0;
n->imms.byte=ps->imms.byte; n->imms.byte = ps->imms.byte;
OSPF_TRACE(D_PACKETS, "I'm slave to %I.", n->ip); OSPF_TRACE(D_PACKETS, "I'm slave to %I.", n->ip);
ospf_neigh_sm(n, INM_NEGDONE); ospf_neigh_sm(n, INM_NEGDONE);
ospf_dbdes_tx(n); ospf_dbdes_send(n);
break; break;
} }
else else
{ {
if(((ps->imms.bit.i==0) && (ps->imms.bit.ms==0)) && if (((ps->imms.bit.i == 0) && (ps->imms.bit.ms == 0)) &&
(n->rid < myrid) && (n->dds == ntohl(ps->ddseq))) (n->rid < myrid) && (n->dds == ntohl(ps->ddseq)))
{ {
/* I'm master! */ /* I'm master! */
n->options=ps->options; n->options = ps->options;
n->ddr=ntohl(ps->ddseq)-1; n->ddr = ntohl(ps->ddseq) - 1;
n->imms.byte=ps->imms.byte; n->imms.byte = ps->imms.byte;
OSPF_TRACE(D_PACKETS, "I'm master to %I.", n->ip); OSPF_TRACE(D_PACKETS, "I'm master to %I.", n->ip);
ospf_neigh_sm(n, INM_NEGDONE); ospf_neigh_sm(n, INM_NEGDONE);
} }
@ -255,98 +252,105 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
break; break;
} }
} }
if(ps->imms.bit.i) break; if (ps->imms.bit.i)
break;
case NEIGHBOR_EXCHANGE: case NEIGHBOR_EXCHANGE:
if((ps->imms.byte==n->imms.byte) && (ps->options==n->options) && if ((ps->imms.byte == n->imms.byte) && (ps->options == n->options) &&
(ntohl(ps->ddseq)==n->ddr)) (ntohl(ps->ddseq) == n->ddr))
{ {
/* Duplicate packet */ /* Duplicate packet */
OSPF_TRACE(D_PACKETS, "Received duplicate dbdes from %I.", n->ip); OSPF_TRACE(D_PACKETS, "Received duplicate dbdes from %I.", n->ip);
if(n->imms.bit.ms==0) if (n->imms.bit.ms == 0)
{ {
ospf_dbdes_tx(n); ospf_dbdes_send(n);
} }
return; return;
} }
n->ddr=ntohl(ps->ddseq); n->ddr = ntohl(ps->ddseq);
if(ps->imms.bit.ms!=n->imms.bit.ms) /* M/S bit differs */ if (ps->imms.bit.ms != n->imms.bit.ms) /* M/S bit differs */
{ {
log("SEQMIS-BIT-MS\n"); OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (bit MS)",
n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }
if(ps->imms.bit.i) /* I bit is set */ if (ps->imms.bit.i) /* I bit is set */
{ {
log("SEQMIS-BIT-I\n"); OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (bit I)",
n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }
n->imms.byte=ps->imms.byte; n->imms.byte = ps->imms.byte;
if(ps->options!=n->options) /* Options differs */ if (ps->options != n->options) /* Options differs */
{ {
log("SEQMIS-OPT\n"); OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (options)",
n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }
if(n->myimms.bit.ms) if (n->myimms.bit.ms)
{ {
if(ntohl(ps->ddseq)!=n->dds) /* MASTER */ if (ntohl(ps->ddseq) != n->dds) /* MASTER */
{ {
log("SEQMIS-MASTER\n"); OSPF_TRACE(D_PACKETS,
"dbdes - sequence mismatch neighbor %I (master)", n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }
n->dds++; n->dds++;
DBG("Incrementing dds\n"); DBG("Incrementing dds\n");
ospf_dbdes_reqladd(ps,p,n); ospf_dbdes_reqladd(ps, n);
if((n->myimms.bit.m==0) && (ps->imms.bit.m==0)) if ((n->myimms.bit.m == 0) && (ps->imms.bit.m == 0))
{ {
ospf_neigh_sm(n, INM_EXDONE); ospf_neigh_sm(n, INM_EXDONE);
} }
else else
{ {
ospf_dbdes_tx(n); ospf_dbdes_send(n);
} }
} }
else else
{ {
if(ntohl(ps->ddseq)!=(n->dds+1)) /* SLAVE */ if (ntohl(ps->ddseq) != (n->dds + 1)) /* SLAVE */
{ {
log("SEQMIS-SLAVE\n"); OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (slave)",
n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }
n->ddr=ntohl(ps->ddseq); n->ddr = ntohl(ps->ddseq);
n->dds=ntohl(ps->ddseq); n->dds = ntohl(ps->ddseq);
ospf_dbdes_reqladd(ps,p,n); ospf_dbdes_reqladd(ps, n);
ospf_dbdes_tx(n); ospf_dbdes_send(n);
} }
break; break;
case NEIGHBOR_LOADING: case NEIGHBOR_LOADING:
case NEIGHBOR_FULL: case NEIGHBOR_FULL:
if((ps->imms.byte==n->imms.byte) && (ps->options==n->options) && if ((ps->imms.byte == n->imms.byte) && (ps->options == n->options)
(ntohl(ps->ddseq)==n->ddr)) /* Only duplicate are accepted */ && (ntohl(ps->ddseq) == n->ddr))
/* Only duplicate are accepted */
{ {
OSPF_TRACE(D_PACKETS, "Received duplicate dbdes from %I.",n->ip); OSPF_TRACE(D_PACKETS, "Received duplicate dbdes from %I.", n->ip);
return; return;
} }
else else
{ {
log("SEQMIS-FULL\n"); OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (full)",
n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
} }
break; break;
defaut: defaut:
bug("%s: Received dbdes from %I in undefined state.", p->name, n->ip); bug("Received dbdes from %I in undefined state.", n->ip);
break; break;
} }
} }

7
proto/ospf/dbdes.h
View file

@ -1,7 +1,7 @@
/* /*
* BIRD -- OSPF * 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. * Can be freely distributed and used under the terms of the GNU GPL.
* *
@ -10,9 +10,8 @@
#ifndef _BIRD_OSPF_DBDES_H_ #ifndef _BIRD_OSPF_DBDES_H_
#define _BIRD_OSPF_DBDES_H_ #define _BIRD_OSPF_DBDES_H_
void ospf_dbdes_tx(struct ospf_neighbor *n); void ospf_dbdes_send(struct ospf_neighbor *n);
void ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p, void ospf_dbdes_receive(struct ospf_dbdes_packet *ps,
struct ospf_iface *ifa, u16 size); struct ospf_iface *ifa, u16 size);
#endif /* _BIRD_OSPF_DBDES_H_ */ #endif /* _BIRD_OSPF_DBDES_H_ */

2
proto/ospf/neighbor.c
View file

@ -577,7 +577,7 @@ rxmt_timer_hook(timer *timer)
DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n", DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n",
p->name, ifa->iface->name, n->ip); p->name, ifa->iface->name, n->ip);
if (n->state < NEIGHBOR_LOADING) ospf_dbdes_tx(n); if (n->state < NEIGHBOR_LOADING) ospf_dbdes_send(n);
if(n->state < NEIGHBOR_FULL) ospf_lsreq_send(n); if(n->state < NEIGHBOR_FULL) ospf_lsreq_send(n);
else else

4
proto/ospf/packet.c
View file

@ -80,7 +80,7 @@ ospf_pkt_finalize (struct ospf_iface *ifa, struct ospf_packet *pkt)
* non generic functions. * non generic functions.
*/ */
int int
ospf_rx_hook (sock * sk, int size) ospf_rx_hook (sock *sk, int size)
{ {
#ifndef IPV6 #ifndef IPV6
struct ospf_packet *ps; struct ospf_packet *ps;
@ -180,7 +180,7 @@ ospf_rx_hook (sock * sk, int size)
break; break;
case DBDES_P: case DBDES_P:
DBG ("%s: Database description received.\n", p->name); DBG ("%s: Database description received.\n", p->name);
ospf_dbdes_rx ((struct ospf_dbdes_packet *) ps, p, ifa, size); ospf_dbdes_receive ((struct ospf_dbdes_packet *) ps, ifa, size);
break; break;
case LSREQ_P: case LSREQ_P:
DBG ("%s: Link state request received.\n", p->name); DBG ("%s: Link state request received.\n", p->name);