static int
list_set_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
u32 size = IP_SET_LIST_DEFAULT_SIZE;
if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_SIZE) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_SIZE])
size = ip_set_get_h32(tb[IPSET_ATTR_SIZE]);
if (size < IP_SET_LIST_MIN_SIZE)
size = IP_SET_LIST_MIN_SIZE;
set->variant = &set_variant;
set->dsize = ip_set_elem_len(set, tb, sizeof(struct set_elem));
if (!init_list_set(net, set, size))
return -ENOMEM;
if (tb[IPSET_ATTR_TIMEOUT]) {
set->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
list_set_gc_init(set, list_set_gc);
}
return 0;
}
static int
bitmap_ip_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
struct bitmap_ip *map;
u32 first_ip = 0, last_ip = 0, hosts;
u64 elements;
u8 netmask = 32;
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;
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &first_ip);
if (ret)
return ret;
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &last_ip);
if (ret)
return ret;
if (first_ip > last_ip) {
u32 tmp = first_ip;
first_ip = last_ip;
last_ip = tmp;
}
} else if (tb[IPSET_ATTR_CIDR]) {
u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
if (cidr >= 32)
return -IPSET_ERR_INVALID_CIDR;
ip_set_mask_from_to(first_ip, last_ip, cidr);
} else
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_NETMASK]) {
netmask = nla_get_u8(tb[IPSET_ATTR_NETMASK]);
if (netmask > 32)
return -IPSET_ERR_INVALID_NETMASK;
first_ip &= ip_set_hostmask(netmask);
last_ip |= ~ip_set_hostmask(netmask);
}
if (netmask == 32) {
hosts = 1;
elements = (u64)last_ip - first_ip + 1;
} else {
u8 mask_bits;
u32 mask;
mask = range_to_mask(first_ip, last_ip, &mask_bits);
if ((!mask && (first_ip || last_ip != 0xFFFFFFFF)) ||
netmask <= mask_bits)
return -IPSET_ERR_BITMAP_RANGE;
pr_debug("mask_bits %u, netmask %u\n", mask_bits, netmask);
hosts = 2 << (32 - netmask - 1);
elements = 2 << (netmask - mask_bits - 1);
}
if (elements > IPSET_BITMAP_MAX_RANGE + 1)
return -IPSET_ERR_BITMAP_RANGE_SIZE;
pr_debug("hosts %u, elements %llu\n",
hosts, (unsigned long long)elements);
map = kzalloc(sizeof(*map), GFP_KERNEL);
if (!map)
return -ENOMEM;
map->memsize = bitmap_bytes(0, elements - 1);
set->variant = &bitmap_ip;
set->dsize = ip_set_elem_len(set, tb, 0);
if (!init_map_ip(set, map, first_ip, last_ip,
elements, hosts, netmask)) {
kfree(map);
return -ENOMEM;
}
if (tb[IPSET_ATTR_TIMEOUT]) {
set->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
bitmap_ip_gc_init(set, bitmap_ip_gc);
}
return 0;
}
static int
bitmap_ipmac_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
struct bitmap_ipmac *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct bitmap_ipmac_adt_elem e = { .id = 0 };
struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
u32 ip;
/* MAC can be src only */
if (!(opt->flags & IPSET_DIM_TWO_SRC))
return 0;
ip = ntohl(ip4addr(skb, opt->flags & IPSET_DIM_ONE_SRC));
if (ip < map->first_ip || ip > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;
/* Backward compatibility: we don't check the second flag */
if (skb_mac_header(skb) < skb->head ||
(skb_mac_header(skb) + ETH_HLEN) > skb->data)
return -EINVAL;
e.id = ip_to_id(map, ip);
e.ether = eth_hdr(skb)->h_source;
return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}
static int
bitmap_ipmac_uadt(struct ip_set *set, struct nlattr *tb[],
enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
const struct bitmap_ipmac *map = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
struct bitmap_ipmac_adt_elem e = { .id = 0 };
struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
u32 ip = 0;
int ret = 0;
if (unlikely(!tb[IPSET_ATTR_IP] ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_SKBMARK) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_SKBPRIO) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_SKBQUEUE)))
return -IPSET_ERR_PROTOCOL;
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
if (ret)
return ret;
ret = ip_set_get_extensions(set, tb, &ext);
if (ret)
return ret;
if (ip < map->first_ip || ip > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;
e.id = ip_to_id(map, ip);
if (tb[IPSET_ATTR_ETHER])
e.ether = nla_data(tb[IPSET_ATTR_ETHER]);
else
e.ether = NULL;
ret = adtfn(set, &e, &ext, &ext, flags);
return ip_set_eexist(ret, flags) ? 0 : ret;
}
static bool
bitmap_ipmac_same_set(const struct ip_set *a, const struct ip_set *b)
{
const struct bitmap_ipmac *x = a->data;
const struct bitmap_ipmac *y = b->data;
return x->first_ip == y->first_ip &&
x->last_ip == y->last_ip &&
a->timeout == b->timeout &&
a->extensions == b->extensions;
}
/* Plain variant */
#include "ip_set_bitmap_gen.h"
/* Create bitmap:ip,mac type of sets */
static bool
init_map_ipmac(struct ip_set *set, struct bitmap_ipmac *map,
u32 first_ip, u32 last_ip, u32 elements)
{
map->members = ip_set_alloc(map->memsize);
if (!map->members)
return false;
if (set->dsize) {
map->extensions = ip_set_alloc(set->dsize * elements);
if (!map->extensions) {
kfree(map->members);
return false;
}
}
map->first_ip = first_ip;
map->last_ip = last_ip;
map->elements = elements;
set->timeout = IPSET_NO_TIMEOUT;
set->data = map;
set->family = NFPROTO_IPV4;
return true;
}
static int
bitmap_ipmac_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
u32 flags)
{
u32 first_ip = 0, last_ip = 0;
u64 elements;
struct bitmap_ipmac *map;
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;
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &first_ip);
if (ret)
return ret;
if (tb[IPSET_ATTR_IP_TO]) {
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &last_ip);
if (ret)
return ret;
if (first_ip > last_ip) {
u32 tmp = first_ip;
first_ip = last_ip;
last_ip = tmp;
}
} else if (tb[IPSET_ATTR_CIDR]) {
u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
if (cidr >= HOST_MASK)
return -IPSET_ERR_INVALID_CIDR;
ip_set_mask_from_to(first_ip, last_ip, cidr);
} else
return -IPSET_ERR_PROTOCOL;
elements = (u64)last_ip - first_ip + 1;
if (elements > IPSET_BITMAP_MAX_RANGE + 1)
return -IPSET_ERR_BITMAP_RANGE_SIZE;
map = kzalloc(sizeof(*map), GFP_KERNEL);
if (!map)
return -ENOMEM;
map->memsize = bitmap_bytes(0, elements - 1);
set->variant = &bitmap_ipmac;
set->dsize = ip_set_elem_len(set, tb,
sizeof(struct bitmap_ipmac_elem));
if (!init_map_ipmac(set, map, first_ip, last_ip, elements)) {
kfree(map);
return -ENOMEM;
}
if (tb[IPSET_ATTR_TIMEOUT]) {
set->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
bitmap_ipmac_gc_init(set, bitmap_ipmac_gc);
}
return 0;
}
