/** create rate data item for name, number 1 in now */
static void infra_create_ratedata(struct infra_cache* infra,
uint8_t* name, size_t namelen, time_t timenow)
{
hashvalue_t h = dname_query_hash(name, 0xab);
struct rate_key* k = (struct rate_key*)calloc(1, sizeof(*k));
struct rate_data* d = (struct rate_data*)calloc(1, sizeof(*d));
if(!k || !d) {
free(k);
free(d);
return; /* alloc failure */
}
k->namelen = namelen;
k->name = memdup(name, namelen);
if(!k->name) {
free(k);
free(d);
return; /* alloc failure */
}
lock_rw_init(&k->entry.lock);
k->entry.hash = h;
k->entry.key = k;
k->entry.data = d;
d->qps[0] = 1;
d->timestamp[0] = timenow;
slabhash_insert(infra->domain_rates, h, &k->entry, d, NULL);
}
hashvalue_t
query_info_hash(struct query_info *q)
{
hashvalue_t h = 0xab;
h = hashlittle(&q->qtype, sizeof(q->qtype), h);
h = hashlittle(&q->qclass, sizeof(q->qclass), h);
h = dname_query_hash(q->qname, h);
return h;
}
/** find data item in array, for write access, caller unlocks */
static struct lruhash_entry* infra_find_ratedata(struct infra_cache* infra,
uint8_t* name, size_t namelen, int wr)
{
struct rate_key key;
hashvalue_t h = dname_query_hash(name, 0xab);
memset(&key, 0, sizeof(key));
key.name = name;
key.namelen = namelen;
key.entry.hash = h;
return slabhash_lookup(infra->domain_rates, h, &key, wr);
}
hashvalue_t
query_info_hash(struct query_info *q, uint16_t flags)
{
hashvalue_t h = 0xab;
h = hashlittle(&q->qtype, sizeof(q->qtype), h);
if(q->qtype == LDNS_RR_TYPE_AAAA && (flags&BIT_CD))
h++;
h = hashlittle(&q->qclass, sizeof(q->qclass), h);
h = dname_query_hash(q->qname, h);
return h;
}
hashvalue_t
rrset_key_hash(struct packed_rrset_key* key)
{
/* type is hashed in host order */
uint16_t t = ntohs(key->type);
/* Note this MUST be identical to pkt_hash_rrset in msgparse.c */
/* this routine does not have a compressed name */
hashvalue_t h = 0xab;
h = dname_query_hash(key->dname, h);
h = hashlittle(&t, sizeof(t), h);
h = hashlittle(&key->rrset_class, sizeof(uint16_t), h);
h = hashlittle(&key->flags, sizeof(uint32_t), h);
return h;
}
/** calculate infra hash for a key */
static hashvalue_t
hash_infra(struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* name)
{
return dname_query_hash(name, hash_addr(addr, addrlen));
}
