void test_htable_size() {
htable *ht = htable_create();
assert(0 == htable_size(ht)
&& "Count should be 0 upon creation.");
htable_insert(ht, "one", "1st value");
htable_insert(ht, "two", "2nd value");
htable_insert(ht, "three", "3rd value");
assert(3 == htable_size(ht)
&& "Count should be 3 after three insertions.");
htable_clear(ht);
assert(0 == htable_size(ht)
&& "Count should be 0 after clear.");
htable_destroy(ht);
}
static int
hash_ip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
{
u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM;
u8 netmask, hbits;
size_t hsize;
struct ip_set_hash *h;
if (!(set->family == NFPROTO_IPV4 || set->family == NFPROTO_IPV6))
return -IPSET_ERR_INVALID_FAMILY;
netmask = set->family == NFPROTO_IPV4 ? 32 : 128;
pr_debug("Create set %s with family %s\n",
set->name, set->family == NFPROTO_IPV4 ? "inet" : "inet6");
if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_HASHSIZE]) {
hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]);
if (hashsize < IPSET_MIMINAL_HASHSIZE)
hashsize = IPSET_MIMINAL_HASHSIZE;
}
if (tb[IPSET_ATTR_MAXELEM])
maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]);
if (tb[IPSET_ATTR_NETMASK]) {
netmask = nla_get_u8(tb[IPSET_ATTR_NETMASK]);
if ((set->family == NFPROTO_IPV4 && netmask > 32) ||
(set->family == NFPROTO_IPV6 && netmask > 128) ||
netmask == 0)
return -IPSET_ERR_INVALID_NETMASK;
}
h = kzalloc(sizeof(*h), GFP_KERNEL);
if (!h)
return -ENOMEM;
h->maxelem = maxelem;
h->netmask = netmask;
get_random_bytes(&h->initval, sizeof(h->initval));
h->timeout = IPSET_NO_TIMEOUT;
hbits = htable_bits(hashsize);
hsize = htable_size(hbits);
if (hsize == 0) {
kfree(h);
return -ENOMEM;
}
h->table = ip_set_alloc(hsize);
if (!h->table) {
kfree(h);
return -ENOMEM;
}
h->table->htable_bits = hbits;
set->data = h;
if (tb[IPSET_ATTR_TIMEOUT]) {
h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = set->family == NFPROTO_IPV4
? &hash_ip4_tvariant : &hash_ip6_tvariant;
if (set->family == NFPROTO_IPV4)
hash_ip4_gc_init(set);
else
hash_ip6_gc_init(set);
} else {
set->variant = set->family == NFPROTO_IPV4
? &hash_ip4_variant : &hash_ip6_variant;
}
pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n",
set->name, jhash_size(h->table->htable_bits),
h->table->htable_bits, h->maxelem, set->data, h->table);
return 0;
}
static int
hash_net6_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, const struct ip_set_adt_opt *opt)
{
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_net6_elem data = {
.cidr = h->nets[0].cidr ? h->nets[0].cidr : HOST_MASK
};
if (data.cidr == 0)
return -EINVAL;
if (adt == IPSET_TEST)
data.cidr = HOST_MASK;
ip6addrptr(skb, opt->flags & IPSET_DIM_ONE_SRC, &data.ip.in6);
ip6_netmask(&data.ip, data.cidr);
return adtfn(set, &data, opt_timeout(opt, h), opt->cmdflags);
}
static int
hash_net6_uadt(struct ip_set *set, struct nlattr *tb[],
enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
const struct ip_set_hash *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_net6_elem data = { .cidr = HOST_MASK };
u32 timeout = h->timeout;
int ret;
if (unlikely(!tb[IPSET_ATTR_IP] ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
return -IPSET_ERR_PROTOCOL;
if (unlikely(tb[IPSET_ATTR_IP_TO]))
return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &data.ip);
if (ret)
return ret;
if (tb[IPSET_ATTR_CIDR])
data.cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
if (!data.cidr || data.cidr > HOST_MASK)
return -IPSET_ERR_INVALID_CIDR;
ip6_netmask(&data.ip, data.cidr);
if (tb[IPSET_ATTR_TIMEOUT]) {
if (!with_timeout(h->timeout))
return -IPSET_ERR_TIMEOUT;
timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
}
if (tb[IPSET_ATTR_CADT_FLAGS] && adt == IPSET_ADD) {
u32 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
if (cadt_flags & IPSET_FLAG_NOMATCH)
flags |= (cadt_flags << 16);
}
ret = adtfn(set, &data, timeout, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
}
/* Create hash:ip type of sets */
static int
hash_net_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
{
u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM;
struct ip_set_hash *h;
u8 hbits;
size_t hsize;
if (!(set->family == NFPROTO_IPV4 || set->family == NFPROTO_IPV6))
return -IPSET_ERR_INVALID_FAMILY;
if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_HASHSIZE]) {
hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]);
if (hashsize < IPSET_MIMINAL_HASHSIZE)
hashsize = IPSET_MIMINAL_HASHSIZE;
}
if (tb[IPSET_ATTR_MAXELEM])
maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]);
h = kzalloc(sizeof(*h)
+ sizeof(struct ip_set_hash_nets)
* (set->family == NFPROTO_IPV4 ? 32 : 128), GFP_KERNEL);
if (!h)
return -ENOMEM;
h->maxelem = maxelem;
get_random_bytes(&h->initval, sizeof(h->initval));
h->timeout = IPSET_NO_TIMEOUT;
hbits = htable_bits(hashsize);
hsize = htable_size(hbits);
if (hsize == 0) {
kfree(h);
return -ENOMEM;
}
h->table = ip_set_alloc(hsize);
if (!h->table) {
kfree(h);
return -ENOMEM;
}
h->table->htable_bits = hbits;
set->data = h;
if (tb[IPSET_ATTR_TIMEOUT]) {
h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = set->family == NFPROTO_IPV4
? &hash_net4_tvariant : &hash_net6_tvariant;
if (set->family == NFPROTO_IPV4)
hash_net4_gc_init(set);
else
hash_net6_gc_init(set);
} else {
set->variant = set->family == NFPROTO_IPV4
? &hash_net4_variant : &hash_net6_variant;
}
pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n",
set->name, jhash_size(h->table->htable_bits),
h->table->htable_bits, h->maxelem, set->data, h->table);
return 0;
}
static int
hash_ipportip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
{
struct ip_set_hash *h;
u32 hashsize = IPSET_DEFAULT_HASHSIZE, maxelem = IPSET_DEFAULT_MAXELEM;
u8 hbits;
size_t hsize;
if (!(set->family == AF_INET || set->family == AF_INET6))
return -IPSET_ERR_INVALID_FAMILY;
if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_HASHSIZE) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_MAXELEM) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_HASHSIZE]) {
hashsize = ip_set_get_h32(tb[IPSET_ATTR_HASHSIZE]);
if (hashsize < IPSET_MIMINAL_HASHSIZE)
hashsize = IPSET_MIMINAL_HASHSIZE;
}
if (tb[IPSET_ATTR_MAXELEM])
maxelem = ip_set_get_h32(tb[IPSET_ATTR_MAXELEM]);
h = kzalloc(sizeof(*h), GFP_KERNEL);
if (!h)
return -ENOMEM;
h->maxelem = maxelem;
get_random_bytes(&h->initval, sizeof(h->initval));
h->timeout = IPSET_NO_TIMEOUT;
hbits = htable_bits(hashsize);
hsize = htable_size(hbits);
if (hsize == 0) {
kfree(h);
return -ENOMEM;
}
h->table = ip_set_alloc(hsize);
if (!h->table) {
kfree(h);
return -ENOMEM;
}
h->table->htable_bits = hbits;
set->data = h;
if (tb[IPSET_ATTR_TIMEOUT]) {
h->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
set->variant = set->family == AF_INET
? &hash_ipportip4_tvariant : &hash_ipportip6_tvariant;
if (set->family == AF_INET)
hash_ipportip4_gc_init(set);
else
hash_ipportip6_gc_init(set);
} else {
set->variant = set->family == AF_INET
? &hash_ipportip4_variant : &hash_ipportip6_variant;
}
pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n",
set->name, jhash_size(h->table->htable_bits),
h->table->htable_bits, h->maxelem, set->data, h->table);
return 0;
}