mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-22 09:41:54 +00:00
LSA DB is completely redesigned. Now it should be faster and it needs
less memory.
This commit is contained in:
Ondrej Filip
parent
af834f8630
commit
ce17d4c165
@ -8,6 +8,32 @@
|
||||
|
||||
#include "ospf.h"
|
||||
|
||||
void
|
||||
htonlsah(struct ospf_lsa_header *h, struct ospf_lsa_header *n)
|
||||
{
|
||||
n->age=htons(h->age);
|
||||
n->options=h->options;
|
||||
n->type=h->type;
|
||||
n->id=htonl(h->id);
|
||||
n->rt=htonl(h->rt);
|
||||
n->sn=htonl(h->sn);
|
||||
n->checksum=htons(h->checksum);
|
||||
n->length=htons(h->length);
|
||||
};
|
||||
|
||||
void
|
||||
ntohlsah(struct ospf_lsa_header *n, struct ospf_lsa_header *h)
|
||||
{
|
||||
h->age=ntohs(n->age);
|
||||
h->options=n->options;
|
||||
h->type=n->type;
|
||||
h->id=ntohl(n->id);
|
||||
h->rt=ntohl(n->rt);
|
||||
h->sn=ntohl(n->sn);
|
||||
h->checksum=ntohs(n->checksum);
|
||||
h->length=ntohs(n->length);
|
||||
};
|
||||
|
||||
void
|
||||
ospf_dbdes_tx(struct ospf_neighbor *n)
|
||||
{
|
||||
@ -44,7 +70,7 @@ ospf_dbdes_tx(struct ospf_neighbor *n)
|
||||
if(! ((IAMMASTER(n->myimms) && (n->dds==n->ddr+1)) || ((!IAMMASTER(n->myimms)) && (n->dds==n->ddr))))
|
||||
{
|
||||
snode *sn; /* Send next */
|
||||
struct ospf_lsaheader *lsa;
|
||||
struct ospf_lsa_header *lsa;
|
||||
|
||||
fill_ospf_pkt_hdr(ifa, pkt, DBDES);
|
||||
pkt->iface_mtu= ifa->iface->mtu;
|
||||
@ -52,7 +78,8 @@ ospf_dbdes_tx(struct ospf_neighbor *n)
|
||||
pkt->ddseq=n->dds;
|
||||
|
||||
sn=s_get(&(n->dbsi));
|
||||
j=i=(pkt->iface_mtu-sizeof(struct ospf_dbdes_packet))/sizeof(struct ospf_lsaheader); /* Number of lsaheaders */
|
||||
j=i=(pkt->iface_mtu-sizeof(struct ospf_dbdes_packet))/
|
||||
sizeof(struct ospf_lsa_header); /* Number of lsaheaders */
|
||||
lsa=(n->ldbdes+sizeof(struct ospf_dbdes_packet));
|
||||
|
||||
for(;i>0;i--)
|
||||
@ -60,14 +87,7 @@ ospf_dbdes_tx(struct ospf_neighbor *n)
|
||||
struct top_hash_entry *en;
|
||||
|
||||
en=(struct top_hash_entry *)sn;
|
||||
lsa->lsage=htons(en->lsage);
|
||||
lsa->options=htons(en->options);
|
||||
lsa->lstype=htons(en->lsa_type);
|
||||
lsa->lsid=htons(en->lsa_id);
|
||||
lsa->advr=htons(en->rtr_id);
|
||||
lsa->lssn=htons(en->lsseqno);
|
||||
lsa->length=htons(en->length);
|
||||
lsa->checksum=htons(en->checksum);
|
||||
htonlsah(&(en->lsa), lsa);
|
||||
if(sn->next==NULL)
|
||||
{
|
||||
break; /* Should set some flag? */
|
||||
@ -83,7 +103,8 @@ ospf_dbdes_tx(struct ospf_neighbor *n)
|
||||
|
||||
pkt->imms=n->myimms;
|
||||
|
||||
length=j*sizeof(struct ospf_lsaheader)+sizeof(struct ospf_dbdes_packet);
|
||||
length=j*sizeof(struct ospf_lsa_header)+
|
||||
sizeof(struct ospf_dbdes_packet);
|
||||
op->length=htons(length);
|
||||
ospf_pkt_finalize(ifa, op);
|
||||
sk_send_to(ifa->ip_sk,length, n->ip, OSPF_PROTO);
|
||||
|
||||
@ -206,7 +206,9 @@ ospf_neigh_sm(struct ospf_neighbor *n, int event)
|
||||
neigh_chstate(n,NEIGHBOR_EXCHANGE);
|
||||
s_init_list(&(n->lsrql));
|
||||
s_init_list(&(n->lsrtl));
|
||||
DBG("OK1\n");
|
||||
s_init(&(n->dbsi), &(n->ifa->oa->lsal));
|
||||
DBG("OK2\n");
|
||||
ospf_dbdes_tx(n);
|
||||
}
|
||||
break;
|
||||
|
||||
@ -148,17 +148,81 @@ struct ospf_dbdes_packet {
|
||||
u32 ddseq;
|
||||
};
|
||||
|
||||
struct ospf_lsaheader {
|
||||
u16 lsage; /* LS Age */
|
||||
|
||||
struct ospf_lsa_header {
|
||||
u16 age; /* LS Age */
|
||||
#define LSA_MAXAGE 3600 /* 1 hour */
|
||||
#define LSA_CHECKAGE 300 /* 5 minutes */
|
||||
#define LSA_MAXAGEDIFF 900 /* 15 minutes */
|
||||
u8 options;
|
||||
u8 lstype;
|
||||
u32 lsid;
|
||||
u32 advr; /* Advertising router */
|
||||
u32 lssn; /* LS Sequence number */
|
||||
u8 type;
|
||||
u32 id;
|
||||
#define LSA_T_RT 1
|
||||
#define LSA_T_NET 2
|
||||
#define LSA_T_SUM_NET 3
|
||||
#define LSA_T_SUM_RT 4
|
||||
#define LSA_T_EXT 5
|
||||
u32 rt; /* Advertising router */
|
||||
u32 sn; /* LS Sequence number */
|
||||
#define LSA_INITSEQNO 0x80000001
|
||||
#define LSA_MAXSEQNO 0x7fffffff
|
||||
u16 checksum;
|
||||
u16 length;
|
||||
};
|
||||
|
||||
struct ospf_lsa_rt {
|
||||
u8 VEB;
|
||||
#define LSA_RT_V 5
|
||||
#define LSA_RT_E 6
|
||||
#define LSA_RT_B 7
|
||||
u8 padding;
|
||||
u16 links;
|
||||
};
|
||||
|
||||
struct ospf_lsa_rt_link {
|
||||
u32 id;
|
||||
u32 data;
|
||||
u8 type;
|
||||
#define LSART_PTP 1
|
||||
#define LSART_NET 2
|
||||
#define LSART_STUB 3
|
||||
#define LSART_VLNK 4
|
||||
u8 notos;
|
||||
u16 metric;
|
||||
};
|
||||
|
||||
struct ospf_lsa_rt_link_tos { /* Actually we ignore TOS. This is useless */
|
||||
u8 tos;
|
||||
u8 padding;
|
||||
u16 metric;
|
||||
};
|
||||
|
||||
|
||||
struct ospf_lsa_net {
|
||||
u32 netmask;
|
||||
};
|
||||
|
||||
struct ospf_lsa_summ {
|
||||
u32 netmask;
|
||||
};
|
||||
|
||||
struct ospf_lsa_summ_net {
|
||||
u8 tos;
|
||||
u8 padding;
|
||||
u16 metric;
|
||||
};
|
||||
|
||||
struct ospf_lsa_ext {
|
||||
u32 netmask;
|
||||
};
|
||||
|
||||
struct ospf_lsa_ext_tos {
|
||||
u8 etos;
|
||||
u8 padding;
|
||||
u16 mertic;
|
||||
u32 fwaddr;
|
||||
u32 tag;
|
||||
};
|
||||
|
||||
struct ospf_neighbor
|
||||
{
|
||||
@ -223,7 +287,7 @@ struct ospf_area {
|
||||
struct top_graph *gr; /* LSA graph */
|
||||
slist lsal; /* List of all LSA's */
|
||||
struct top_hash_entry *rt; /* My own router LSA */
|
||||
slab *rtlinks;
|
||||
int stub;
|
||||
};
|
||||
|
||||
struct proto_ospf {
|
||||
|
||||
@ -23,13 +23,141 @@
|
||||
#define HASH_LO_STEP 2
|
||||
#define HASH_LO_MIN 8
|
||||
|
||||
void
|
||||
make_rt_lsa(struct ospf_area *oa, struct proto_ospf *p)
|
||||
{
|
||||
struct ospf_iface *ifa;
|
||||
int i=0,j=0,k=0,v=0,e=0,b=0;
|
||||
struct ospf_lsa_rt *rt;
|
||||
struct ospf_lsa_rt_link *ln;
|
||||
struct ospf_neighbor *neigh;
|
||||
struct top_hash_entry *old;
|
||||
|
||||
old=oa->rt;
|
||||
|
||||
WALK_LIST (ifa, p->iface_list) i++;
|
||||
{
|
||||
if((ifa->an==oa->areaid) && (ifa->state!=OSPF_IS_DOWN))
|
||||
{
|
||||
i++;
|
||||
if(ifa->type==OSPF_IT_VLINK) v=1;
|
||||
}
|
||||
}
|
||||
rt=mb_allocz(p->proto.pool, sizeof(struct ospf_lsa_rt)+
|
||||
i*sizeof(struct ospf_lsa_rt_link));
|
||||
if((p->areano>1) && (!oa->stub)) e=1;
|
||||
rt->VEB=(v>>LSA_RT_V)+(e>>LSA_RT_E)+(b>>LSA_RT_B);
|
||||
ln=(struct ospf_lsa_rt_link *)(rt+1);
|
||||
|
||||
WALK_LIST (ifa, p->iface_list)
|
||||
{
|
||||
if((ifa->an==oa->areaid) && (ifa->state!=OSPF_IS_DOWN))
|
||||
{
|
||||
if(ifa->state==OSPF_IS_LOOP)
|
||||
{
|
||||
ln->type=3;
|
||||
ln->id=ipa_to_u32(ifa->iface->addr->ip);
|
||||
ln->data=0xffffffff;
|
||||
ln->metric=0;
|
||||
ln->notos=0;
|
||||
}
|
||||
else
|
||||
{
|
||||
switch(ifa->type)
|
||||
{
|
||||
case OSPF_IT_PTP: /* rfc2328 - pg126 */
|
||||
neigh=(struct ospf_neighbor *)HEAD(ifa->neigh_list);
|
||||
if((neigh!=NULL) || (neigh->state==NEIGHBOR_FULL))
|
||||
{
|
||||
ln->type=LSART_PTP;
|
||||
ln->id=neigh->rid;
|
||||
ln->metric=ifa->cost;
|
||||
ln->notos=0;
|
||||
if(ifa->iface->flags && IA_UNNUMBERED)
|
||||
{
|
||||
ln->data=ifa->iface->index;
|
||||
}
|
||||
else
|
||||
{
|
||||
ln->id=ipa_to_u32(ifa->iface->addr->ip);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if(ifa->state==OSPF_IS_PTP)
|
||||
{
|
||||
ln->type=LSART_STUB;
|
||||
ln->id=ln->id=ipa_to_u32(ifa->iface->addr->opposite);
|
||||
ln->metric=ifa->cost;
|
||||
ln->notos=0;
|
||||
ln->data=0xffffffff;
|
||||
}
|
||||
else
|
||||
{
|
||||
i--; /* No link added */
|
||||
}
|
||||
}
|
||||
break;
|
||||
case OSPF_IT_BCAST: /*FIXME Go on */
|
||||
case OSPF_IT_NBMA:
|
||||
if(ifa->state==OSPF_IS_WAITING)
|
||||
{
|
||||
ln->type=LSART_STUB;
|
||||
ln->id=ipa_to_u32(ifa->iface->addr->prefix);
|
||||
ln->data=ipa_to_u32(ipa_mkmask(ifa->iface->addr->pxlen));
|
||||
ln->metric=ifa->cost;
|
||||
ln->notos=0;
|
||||
}
|
||||
else
|
||||
{
|
||||
j=0,k=0;
|
||||
WALK_LIST(neigh, ifa->neigh_list)
|
||||
{
|
||||
if((neigh->rid==ifa->drid) &&
|
||||
(neigh->state==NEIGHBOR_FULL)) k=1;
|
||||
if(neigh->state==NEIGHBOR_FULL) j=1;
|
||||
}
|
||||
if(((ifa->state=OSPF_IS_DR) && (j==1)) || (k==1))
|
||||
{
|
||||
ln->type=LSART_NET;
|
||||
ln->id=ipa_to_u32(ifa->drip);
|
||||
ln->data=ipa_to_u32(ifa->iface->addr->ip);
|
||||
ln->metric=ifa->cost;
|
||||
ln->notos=0;
|
||||
}
|
||||
else
|
||||
{
|
||||
ln->type=LSART_STUB;
|
||||
ln->id=ipa_to_u32(ifa->iface->addr->prefix);
|
||||
ln->data=ipa_to_u32(ipa_mkmask(ifa->iface->addr->pxlen));
|
||||
ln->metric=ifa->cost;
|
||||
ln->notos=0;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case OSPF_IT_VLINK: /* FIXME Add virtual links! */
|
||||
i--;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if(ifa->type==OSPF_IT_VLINK) v=1;
|
||||
}
|
||||
ln=(ln+1);
|
||||
}
|
||||
rt->links=i;
|
||||
if(old->lsa_body!=NULL) mb_free(old->lsa_body);
|
||||
old->lsa_body=rt;
|
||||
}
|
||||
|
||||
|
||||
|
||||
void
|
||||
addifa_rtlsa(struct ospf_iface *ifa)
|
||||
{
|
||||
struct ospf_area *oa;
|
||||
struct proto_ospf *po;
|
||||
u32 rtid;
|
||||
struct top_graph_rtlsa *rt;
|
||||
struct top_hash_entry *rt;
|
||||
struct top_graph_rtlsa_link *li, *lih;
|
||||
|
||||
po=ifa->proto;
|
||||
@ -53,37 +181,17 @@ addifa_rtlsa(struct ospf_iface *ifa)
|
||||
oa->areaid=ifa->an;
|
||||
oa->gr=ospf_top_new(po);
|
||||
s_init_list(&(oa->lsal));
|
||||
oa->rtlinks=sl_new(po->proto.pool,
|
||||
sizeof(struct top_graph_rtlsa_link));
|
||||
oa->rt=ospf_hash_get(oa->gr, rtid, rtid, LSA_T_RT);
|
||||
s_add_head(&(oa->lsal), (snode *)oa->rt);
|
||||
rt=mb_alloc(po->proto.pool, sizeof(struct top_graph_rtlsa));
|
||||
oa->rt->vertex=(void *)rt;
|
||||
oa->rt->lsage=0;
|
||||
oa->rt->lsseqno=LSA_INITSEQNO; /* FIXME Check it latter */
|
||||
rt->Vbit=0;
|
||||
rt->Ebit= (po->areano++ ? 0 : 1); /* If it's 1st area set 0 */
|
||||
rt->Bbit=0; /* FIXME Could read config */
|
||||
oa->rt->lsa_body=NULL;
|
||||
oa->rt->lsa.age=0;
|
||||
oa->rt->lsa.sn=LSA_INITSEQNO-1; /* FIXME Check it latter */
|
||||
DBG("%s: New OSPF area \"%d\" added.\n", po->proto.name, ifa->an);
|
||||
|
||||
if(po->areano==2) /* We are attached to more than 2 areas! */
|
||||
{
|
||||
oa=po->firstarea;
|
||||
|
||||
while(oa!=NULL)
|
||||
{
|
||||
rt=(struct top_graph_rtlsa *)oa->rt->vertex;
|
||||
rt->Ebit=1;
|
||||
}
|
||||
make_rt_lsa(oa, po);
|
||||
/*FIXME seq no++ */
|
||||
/*FIXME lsa_flood(oa->rt) */
|
||||
|
||||
oa=oa->next;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/*FIXME lsa_flood(oa->rt) */;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -170,7 +278,7 @@ ospf_top_rehash(struct top_graph *f, int step)
|
||||
while (e)
|
||||
{
|
||||
x = e->next;
|
||||
n = newt + ospf_top_hash(f, e->lsa_id, e->rtr_id, e->lsa_type);
|
||||
n = newt + ospf_top_hash(f, e->lsa.id, e->lsa.rt, e->lsa.type);
|
||||
e->next = *n;
|
||||
*n = e;
|
||||
e = x;
|
||||
@ -184,7 +292,7 @@ ospf_hash_find(struct top_graph *f, u32 lsa, u32 rtr, u32 type)
|
||||
{
|
||||
struct top_hash_entry *e = f->hash_table[ospf_top_hash(f, lsa, rtr, type)];
|
||||
|
||||
while (e && (e->lsa_id != lsa || e->rtr_id != rtr || e->lsa_type != type))
|
||||
while (e && (e->lsa.id != lsa || e->lsa.rt != rtr || e->lsa.type != type))
|
||||
e = e->next;
|
||||
return e;
|
||||
}
|
||||
@ -195,15 +303,15 @@ ospf_hash_get(struct top_graph *f, u32 lsa, u32 rtr, u32 type)
|
||||
struct top_hash_entry **ee = f->hash_table + ospf_top_hash(f, lsa, rtr, type);
|
||||
struct top_hash_entry *e = *ee;
|
||||
|
||||
while (e && (e->lsa_id != lsa || e->rtr_id != rtr || e->lsa_type != type))
|
||||
while (e && (e->lsa.id != lsa || e->lsa.rt != rtr || e->lsa.type != type))
|
||||
e = e->next;
|
||||
if (e)
|
||||
return e;
|
||||
e = sl_alloc(f->hash_slab);
|
||||
e->lsa_id = lsa;
|
||||
e->rtr_id = rtr;
|
||||
e->lsa_type = type;
|
||||
e->vertex = NULL;
|
||||
e->lsa.id = lsa;
|
||||
e->lsa.rt = rtr;
|
||||
e->lsa.type = type;
|
||||
e->lsa_body = NULL;
|
||||
e->next=*ee; /* MJ you forgot this :-) */
|
||||
*ee=e;
|
||||
if (f->hash_entries++ > f->hash_entries_max)
|
||||
@ -214,7 +322,7 @@ ospf_hash_get(struct top_graph *f, u32 lsa, u32 rtr, u32 type)
|
||||
void
|
||||
ospf_hash_delete(struct top_graph *f, struct top_hash_entry *e)
|
||||
{
|
||||
unsigned int h = ospf_top_hash(f, e->lsa_id, e->rtr_id, e->lsa_type);
|
||||
unsigned int h = ospf_top_hash(f, e->lsa.id, e->lsa.rt, e->lsa.type);
|
||||
struct top_hash_entry **ee = f->hash_table + h;
|
||||
|
||||
while (*ee)
|
||||
@ -243,8 +351,8 @@ ospf_top_dump(struct top_graph *f)
|
||||
struct top_hash_entry *e = f->hash_table[i];
|
||||
while (e)
|
||||
{
|
||||
debug("\t%04x %08x %08x %p\n", e->lsa_type, e->lsa_id,
|
||||
e->rtr_id, e->vertex);
|
||||
debug("\t%04x %08x %08x %p\n", e->lsa.type, e->lsa.id,
|
||||
e->lsa.rt, e->lsa_body);
|
||||
e = e->next;
|
||||
}
|
||||
}
|
||||
|
||||
@ -12,23 +12,8 @@
|
||||
struct top_hash_entry { /* Index for fast mapping (type,rtrid,LSid)->vertex */
|
||||
snode n;
|
||||
struct top_hash_entry *next; /* Next in hash chain */
|
||||
struct top_vertex *vertex;
|
||||
u32 lsa_id, rtr_id;
|
||||
u8 lsa_type;
|
||||
#define LSA_T_RT 1
|
||||
#define LSA_T_NET 2
|
||||
#define LSA_T_SUM_NET 3
|
||||
#define LSA_T_SUM_RT 4
|
||||
#define LSA_T_EXT 5
|
||||
u8 options;
|
||||
u16 lsage;
|
||||
#define LSA_MAXAGE 3600 /* 1 hour */
|
||||
#define LSA_CHECKAGE 300 /* 5 minutes */
|
||||
#define LSA_MAXAGEDIFF 900 /* 15 minutes */
|
||||
u32 lsseqno;
|
||||
u16 length, checksum;
|
||||
#define LSA_INITSEQNO 0x80000001
|
||||
#define LSA_MAXSEQNO 0x7fffffff
|
||||
struct ospf_lsa_header lsa;
|
||||
void *lsa_body;
|
||||
};
|
||||
|
||||
struct top_graph {
|
||||
@ -50,21 +35,4 @@ struct top_hash_entry *ospf_hash_get(struct top_graph *, u32 lsa, u32 rtr, u32 t
|
||||
void ospf_hash_delete(struct top_graph *, struct top_hash_entry *);
|
||||
void addifa_rtlsa(struct ospf_iface *ifa);
|
||||
|
||||
struct top_graph_rtlsa {
|
||||
u8 Vbit;
|
||||
u8 Ebit;
|
||||
u8 Bbit;
|
||||
int links; /* Number of links */
|
||||
struct top_graph_rtlsa_link *flink;
|
||||
};
|
||||
|
||||
struct top_graph_rtlsa_link { /* FIXME Completely ignoring TOS */
|
||||
u32 id;
|
||||
u32 data;
|
||||
u8 type;
|
||||
u16 metric;
|
||||
struct top_graph_rtlsa_link *next;
|
||||
};
|
||||
|
||||
|
||||
#endif /* _BIRD_OSPF_TOPOLOGY_H_ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user