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This commit is contained in:
Ondrej Filip 2004-06-04 16:55:53 +00:00
parent c76ba51a5f
commit fb9bf6888c
2 changed files with 84 additions and 86 deletions
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159
proto/ospf/lsack.c
View file

@ -8,24 +8,25 @@
#include "ospf.h" #include "ospf.h"
char *s_queue[]={ "direct", "delayed" }; char *s_queue[] = { "direct", "delayed" };
/* /*
* ===================================== * =====================================
* Note, that h is in network endianity! * Note, that h is in network endianity!
* ===================================== * =====================================
*/ */
void void
ospf_lsack_enqueue(struct ospf_neighbor *n,struct ospf_lsa_header *h, ospf_lsack_enqueue(struct ospf_neighbor *n, struct ospf_lsa_header *h,
struct proto *p, int queue) struct proto *p, int queue)
{ {
struct lsah_n *no; struct lsah_n *no;
no=mb_alloc(n->pool,sizeof(struct lsah_n)); no = mb_alloc(n->pool, sizeof(struct lsah_n));
memcpy(&no->lsa,h,sizeof(struct ospf_lsa_header)); memcpy(&no->lsa, h, sizeof(struct ospf_lsa_header));
add_tail(&n->ackl[queue], NODE no); add_tail(&n->ackl[queue], NODE no);
DBG("Adding (%s) ack for %I, ID: %I, RT: %I, Type: %u\n", s_queue[queue], n->rid, DBG("Adding (%s) ack for %I, ID: %I, RT: %I, Type: %u\n", s_queue[queue],
ntohl(h->id), ntohl(h->rt),h->type); n->rid, ntohl(h->id), ntohl(h->rt), h->type);
} }
void void
@ -34,85 +35,76 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
struct ospf_packet *op; struct ospf_packet *op;
struct ospf_lsack_packet *pk; struct ospf_lsack_packet *pk;
sock *sk; sock *sk;
u16 len,i=0; u16 len, i = 0;
struct ospf_lsa_header *h; struct ospf_lsa_header *h;
struct lsah_n *no; struct lsah_n *no;
struct ospf_iface *ifa=n->ifa; struct ospf_iface *ifa = n->ifa;
struct proto *p=&n->ifa->proto->proto; struct proto *p = &n->ifa->proto->proto;
if(EMPTY_LIST(n->ackl[queue])) return; if (EMPTY_LIST(n->ackl[queue]))
return;
OSPF_TRACE(D_PACKETS, "LS ack sent to %I (%s)", n->ip, s_queue[queue]); OSPF_TRACE(D_PACKETS, "LS ack sent to %I (%s)", n->ip, s_queue[queue]);
if(ifa->type==OSPF_IT_BCAST) if (ifa->type == OSPF_IT_BCAST)
{ sk = ifa->hello_sk;
sk=ifa->hello_sk;
}
else else
{ sk = ifa->ip_sk;
sk=ifa->ip_sk;
}
pk=(struct ospf_lsack_packet *)sk->tbuf; pk = (struct ospf_lsack_packet *) sk->tbuf;
op=(struct ospf_packet *)sk->tbuf; op = (struct ospf_packet *) sk->tbuf;
fill_ospf_pkt_hdr(n->ifa, pk, LSACK_P); fill_ospf_pkt_hdr(n->ifa, pk, LSACK_P);
h=(struct ospf_lsa_header *)(pk+1); h = (struct ospf_lsa_header *) (pk + 1);
while(!EMPTY_LIST(n->ackl[queue])) while (!EMPTY_LIST(n->ackl[queue]))
{ {
no=(struct lsah_n *)HEAD(n->ackl[queue]); no = (struct lsah_n *) HEAD(n->ackl[queue]);
memcpy(h+i,&no->lsa, sizeof(struct ospf_lsa_header)); memcpy(h + i, &no->lsa, sizeof(struct ospf_lsa_header));
i++; i++;
DBG("Iter %u ID: %I, RT: %I, Type: %u\n",i, ntohl((h+i)->id), DBG("Iter %u ID: %I, RT: %I, Type: %u\n", i, ntohl((h + i)->id),
ntohl((h+i)->rt),(h+i)->type); ntohl((h + i)->rt), (h + i)->type);
rem_node(NODE no); rem_node(NODE no);
mb_free(no); mb_free(no);
if((i*sizeof(struct ospf_lsa_header)+sizeof(struct ospf_lsack_packet)+SIPH)> if ((i * sizeof(struct ospf_lsa_header) +
n->ifa->iface->mtu) sizeof(struct ospf_lsack_packet) + SIPH) > n->ifa->iface->mtu)
{ {
if(!EMPTY_LIST(n->ackl[queue])) if (!EMPTY_LIST(n->ackl[queue]))
{ {
len=sizeof(struct ospf_lsack_packet)+i*sizeof(struct ospf_lsa_header); len =
op->length=htons(len); sizeof(struct ospf_lsack_packet) +
i * sizeof(struct ospf_lsa_header);
op->length = htons(len);
ospf_pkt_finalize(n->ifa, op); ospf_pkt_finalize(n->ifa, op);
DBG("Sending and continuing! Len=%u\n",len); DBG("Sending and continuing! Len=%u\n", len);
if(ifa->type==OSPF_IT_BCAST) if (ifa->type == OSPF_IT_BCAST)
{ {
if((ifa->state==OSPF_IS_DR)||(ifa->state==OSPF_IS_BACKUP)) if ((ifa->state == OSPF_IS_DR) || (ifa->state == OSPF_IS_BACKUP))
{ sk_send_to(sk, len, AllSPFRouters, OSPF_PROTO);
sk_send_to(sk ,len, AllSPFRouters, OSPF_PROTO);
}
else else
{ sk_send_to(sk, len, AllDRouters, OSPF_PROTO);
sk_send_to(sk ,len, AllDRouters, OSPF_PROTO);
}
} }
else else
{ {
if((ifa->state==OSPF_IS_DR)||(ifa->state==OSPF_IS_BACKUP)) if ((ifa->state == OSPF_IS_DR) || (ifa->state == OSPF_IS_BACKUP))
{ sk_send_to_agt(sk, len, ifa, NEIGHBOR_EXCHANGE);
sk_send_to_agt(sk, len, ifa, NEIGHBOR_EXCHANGE);
}
else else
{ sk_send_to_bdr(sk, len, ifa);
sk_send_to_bdr(sk, len, ifa);
}
} }
fill_ospf_pkt_hdr(n->ifa, pk, LSACK_P); fill_ospf_pkt_hdr(n->ifa, pk, LSACK_P);
i=0; i = 0;
} }
} }
} }
len=sizeof(struct ospf_lsack_packet)+i*sizeof(struct ospf_lsa_header); len = sizeof(struct ospf_lsack_packet) + i * sizeof(struct ospf_lsa_header);
op->length=htons(len); op->length = htons(len);
ospf_pkt_finalize(n->ifa, op); ospf_pkt_finalize(n->ifa, op);
DBG("Sending! Len=%u\n",len); DBG("Sending! Len=%u\n", len);
if(ifa->type==OSPF_IT_BCAST) if (ifa->type == OSPF_IT_BCAST)
{ {
if((ifa->state==OSPF_IS_DR)||(ifa->state==OSPF_IS_BACKUP)) if ((ifa->state == OSPF_IS_DR) || (ifa->state == OSPF_IS_BACKUP))
{ {
sk_send_to(sk, len, AllSPFRouters, OSPF_PROTO); sk_send_to(sk, len, AllSPFRouters, OSPF_PROTO);
} }
@ -129,68 +121,71 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
void void
ospf_lsack_receive(struct ospf_lsack_packet *ps, struct proto *p, ospf_lsack_receive(struct ospf_lsack_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size) struct ospf_iface *ifa, u16 size)
{ {
u32 nrid, myrid; u32 nrid, myrid;
struct ospf_neighbor *n; struct ospf_neighbor *n;
struct ospf_lsa_header lsa,*plsa; struct ospf_lsa_header lsa, *plsa;
int length; int length;
u16 nolsa,i; u16 nolsa, i;
struct top_hash_entry *en; struct top_hash_entry *en;
u16 lenn=ntohs(ps->ospf_packet.length); u16 lenn = ntohs(ps->ospf_packet.length);
nrid=ntohl(ps->ospf_packet.routerid); nrid = ntohl(ps->ospf_packet.routerid);
myrid=p->cf->global->router_id; 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 LS ack from unknown neigbor! (%I)", OSPF_TRACE(D_PACKETS, "Received LS ack from unknown neigbor! (%I)", nrid);
nrid); return;
return ;
} }
OSPF_TRACE(D_PACKETS, "Received LS ack from %I", n->ip); OSPF_TRACE(D_PACKETS, "Received LS ack from %I", n->ip);
ospf_neigh_sm(n, INM_HELLOREC); ospf_neigh_sm(n, INM_HELLOREC);
if(n->state<NEIGHBOR_EXCHANGE) return; if (n->state < NEIGHBOR_EXCHANGE)
return;
nolsa=(lenn-sizeof(struct ospf_lsack_packet))/ nolsa = (lenn - sizeof(struct ospf_lsack_packet)) /
sizeof(struct ospf_lsa_header); sizeof(struct ospf_lsa_header);
if((nolsa<1)||((lenn-sizeof(struct ospf_lsack_packet))!= if ((nolsa < 1) || ((lenn - sizeof(struct ospf_lsack_packet)) !=
(nolsa*sizeof(struct ospf_lsa_header)))) (nolsa * sizeof(struct ospf_lsa_header))))
{ {
log("%s: Received corrupted LS ack from %I", p->name, n->ip); log("%s: Received corrupted LS ack from %I", p->name, n->ip);
return; return;
} }
plsa=(struct ospf_lsa_header *)(ps+1); plsa = (struct ospf_lsa_header *) (ps + 1);
for(i=0;i<nolsa;i++) for (i = 0; i < nolsa; i++)
{ {
ntohlsah(plsa+i,&lsa); ntohlsah(plsa + i, &lsa);
if((en=ospf_hash_find_header(n->lsrth,&lsa))==NULL) continue; if ((en = ospf_hash_find_header(n->lsrth, &lsa)) == NULL)
continue;
if(lsa_comp(&lsa,&en->lsa)!=CMP_SAME) if (lsa_comp(&lsa, &en->lsa) != CMP_SAME)
{ {
if((lsa.sn==LSA_MAXSEQNO)&&(lsa.age==LSA_MAXAGE)) continue; if ((lsa.sn == LSA_MAXSEQNO) && (lsa.age == LSA_MAXAGE))
continue;
OSPF_TRACE(D_PACKETS, "Strange LS acknoledgement from %I",n->ip); OSPF_TRACE(D_PACKETS, "Strange LS acknoledgement from %I", n->ip);
OSPF_TRACE(D_PACKETS, "Id: %I, Rt: %I, Type: %u", OSPF_TRACE(D_PACKETS, "Id: %I, Rt: %I, Type: %u",
lsa.id,lsa.rt,lsa.type); lsa.id, lsa.rt, lsa.type);
OSPF_TRACE(D_PACKETS, "I have: Age: %4u, Seqno: 0x%08x, Sum: %u", OSPF_TRACE(D_PACKETS, "I have: Age: %4u, Seqno: 0x%08x, Sum: %u",
en->lsa.age, en->lsa.sn, en->lsa.checksum); en->lsa.age, en->lsa.sn, en->lsa.checksum);
OSPF_TRACE(D_PACKETS, "He has: Age: %4u, Seqno: 0x%08x, Sum: %u", OSPF_TRACE(D_PACKETS, "He has: Age: %4u, Seqno: 0x%08x, Sum: %u",
lsa.age,lsa.sn,lsa.checksum); lsa.age, lsa.sn, lsa.checksum);
continue; continue;
} }
DBG("Deleting LS Id: %I RT: %I Type: %u from LS Retl for neighbor %I\n", DBG("Deleting LS Id: %I RT: %I Type: %u from LS Retl for neighbor %I\n",
lsa.id,lsa.rt,lsa.type,n->rid); lsa.id, lsa.rt, lsa.type, n->rid);
s_rem_node(SNODE en); s_rem_node(SNODE en);
if(en->lsa_body!=NULL) mb_free(en->lsa_body); if (en->lsa_body != NULL)
en->lsa_body=NULL; mb_free(en->lsa_body);
ospf_hash_delete(n->lsrth,en); en->lsa_body = NULL;
} ospf_hash_delete(n->lsrth, en);
}
} }

11
proto/ospf/lsack.h
View file

@ -9,14 +9,17 @@
#ifndef _BIRD_OSPF_LSACK_H_ #ifndef _BIRD_OSPF_LSACK_H_
#define _BIRD_OSPF_LSACK_H_ #define _BIRD_OSPF_LSACK_H_
struct lsah_n {
struct lsah_n
{
node n; node n;
struct ospf_lsa_header lsa; struct ospf_lsa_header lsa;
}; };
void ospf_lsack_receive(struct ospf_lsack_packet *ps, struct proto *p, void ospf_lsack_receive(struct ospf_lsack_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size); struct ospf_iface *ifa, u16 size);
void ospf_lsack_send(struct ospf_neighbor *n, int queue); void ospf_lsack_send(struct ospf_neighbor *n, int queue);
void ospf_lsack_enqueue(struct ospf_neighbor *n,struct ospf_lsa_header *h, void ospf_lsack_enqueue(struct ospf_neighbor *n, struct ospf_lsa_header *h,
struct proto *p, int queue); struct proto *p, int queue);
#endif /* _BIRD_OSPF_LSACK_H_ */ #endif /* _BIRD_OSPF_LSACK_H_ */