diff options
Diffstat (limited to 'proto/bgp')
| -rw-r--r-- | proto/bgp/attrs.c | 38 | ||||
| -rw-r--r-- | proto/bgp/bgp.h | 20 |
2 files changed, 43 insertions, 15 deletions
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c index 350123a..e42a6ea 100644 --- a/proto/bgp/attrs.c +++ b/proto/bgp/attrs.c @@ -21,12 +21,6 @@ static int bgp_mandatory_attrs[] = { BA_ORIGIN, BA_AS_PATH, BA_NEXT_HOP }; -struct bgp_bucket { - struct bgp_bucket *next; - unsigned hash; - ea_list eattrs[0]; -}; - struct attr_desc { char *name; /* FIXME: Use the same names as in filters */ int expected_length; @@ -39,6 +33,13 @@ struct attr_desc { extern struct attr_desc bgp_attr_table[]; static void +bgp_init_prefix(struct fib_node *N) +{ + struct bgp_prefix *p = (struct bgp_prefix *) N; + /* FIXME */ +} + +static void bgp_normalize_set(u32 *dest, u32 *src, unsigned cnt) { memcpy(dest, src, sizeof(u32) * cnt); @@ -48,7 +49,7 @@ bgp_normalize_set(u32 *dest, u32 *src, unsigned cnt) static void bgp_rehash_buckets(struct bgp_proto *p) { - struct bgp_bucket **old = p->bucket_table; + struct bgp_bucket **old = p->bucket_hash; struct bgp_bucket **new; unsigned oldn = p->hash_size; unsigned i, e, mask; @@ -59,14 +60,17 @@ bgp_rehash_buckets(struct bgp_proto *p) p->hash_limit *= 4; if (p->hash_limit >= 65536) p->hash_limit = ~0; - new = p->bucket_table = mb_allocz(p->p.pool, p->hash_size * sizeof(struct bgp_bucket *)); + new = p->bucket_hash = mb_allocz(p->p.pool, p->hash_size * sizeof(struct bgp_bucket *)); mask = p->hash_size - 1; for (i=0; i<oldn; i++) while (b = old[i]) { - old[i] = b->next; + old[i] = b->hash_next; e = b->hash & mask; - b->next = new[e]; + b->hash_next = new[e]; + if (b->hash_next) + b->hash_next->hash_prev = b; + b->hash_prev = NULL; new[e] = b; } mb_free(old); @@ -93,8 +97,11 @@ bgp_new_bucket(struct bgp_proto *p, ea_list *new, unsigned hash) /* Create the bucket and hash it */ b = mb_alloc(p->p.pool, size); - b->next = p->bucket_table[index]; - p->bucket_table[index] = b; + b->hash_next = p->bucket_hash[index]; + if (b->hash_next) + b->hash_next->hash_prev = b; + p->bucket_hash[index] = b; + b->hash_prev = NULL; b->hash = hash; memcpy(b->eattrs, new, ea_size); dest = ((byte *)b->eattrs) + ea_size_aligned; @@ -177,7 +184,7 @@ bgp_get_bucket(struct bgp_proto *p, ea_list *old, ea_list *tmp) /* Hash */ hash = ea_hash(new); - for(b=p->bucket_table[hash & (p->hash_size - 1)]; b; b=b->next) + for(b=p->bucket_hash[hash & (p->hash_size - 1)]; b; b=b->hash_next) if (b->hash == hash && ea_same(b->eattrs, new)) { DBG("Found bucket.\n"); @@ -688,5 +695,8 @@ bgp_attr_init(struct bgp_proto *p) { p->hash_size = 256; p->hash_limit = p->hash_size * 4; - p->bucket_table = mb_allocz(p->p.pool, p->hash_size * sizeof(struct bgp_bucket *)); + p->bucket_hash = mb_allocz(p->p.pool, p->hash_size * sizeof(struct bgp_bucket *)); + init_list(&p->bucket_queue); + p->withdraw_bucket = NULL; + fib_init(&p->prefix_fib, p->p.pool, sizeof(struct bgp_prefix), 0, bgp_init_prefix); } diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index 78bb426..965196b 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -9,6 +9,8 @@ #ifndef _BIRD_BGP_H_ #define _BIRD_BGP_H_ +#include "nest/route.h" + struct linpool; struct eattr; @@ -53,8 +55,24 @@ struct bgp_proto { ip_addr next_hop; /* Either the peer or multihop_via */ struct neighbor *neigh; /* Neighbor entry corresponding to next_hop */ ip_addr local_addr; /* Address of the local end of the link to next_hop */ - struct bgp_bucket **bucket_table; /* Hash table of attribute buckets */ + struct bgp_bucket **bucket_hash; /* Hash table of attribute buckets */ unsigned int hash_size, hash_count, hash_limit; + struct fib prefix_fib; /* Prefixes to be sent */ + list bucket_queue; /* Queue of buckets to send */ + struct bgp_bucket *withdraw_bucket; /* Withdrawn routes */ +}; + +struct bgp_prefix { + struct fib_node n; /* Node in prefix fib */ + node bucket_node; /* Node in per-bucket list */ +}; + +struct bgp_bucket { + struct bgp_bucket *hash_next, *hash_prev; /* Node in bucket hash table */ + node send_node; /* Node in send queue */ + unsigned hash; /* Hash over extended attributes */ + list prefixes; /* Prefixes in this buckets */ + ea_list eattrs[0]; /* Per-bucket extended attributes */ }; #define BGP_PORT 179 |