static inline int
__ipmap_create(const struct ip_set_req_ipmap_create *req,
struct ip_set_ipmap *map)
{
map->netmask = req->netmask;
if (req->netmask == 0xFFFFFFFF) {
map->hosts = 1;
map->sizeid = map->last_ip - map->first_ip + 1;
} else {
unsigned int mask_bits, netmask_bits;
ip_set_ip_t mask;
map->first_ip &= map->netmask; /* Should we better bark? */
mask = range_to_mask(map->first_ip, map->last_ip, &mask_bits);
netmask_bits = mask_to_bits(map->netmask);
if ((!mask && (map->first_ip || map->last_ip != 0xFFFFFFFF))
|| netmask_bits <= mask_bits)
return -ENOEXEC;
DP("mask_bits %u, netmask_bits %u",
mask_bits, netmask_bits);
map->hosts = 2 << (32 - netmask_bits - 1);
map->sizeid = 2 << (netmask_bits - mask_bits - 1);
}
if (map->sizeid > MAX_RANGE + 1) {
ip_set_printk("range too big, %d elements (max %d)",
map->sizeid, MAX_RANGE+1);
return -ENOEXEC;
}
DP("hosts %u, sizeid %u", map->hosts, map->sizeid);
return bitmap_bytes(0, map->sizeid - 1);
}
static int create(struct ip_set *set, const void *data, size_t size)
{
int newbytes;
struct ip_set_req_ipmap_create *req =
(struct ip_set_req_ipmap_create *) data;
struct ip_set_ipmap *map;
if (size != sizeof(struct ip_set_req_ipmap_create)) {
ip_set_printk("data length wrong (want %zu, have %zu)",
sizeof(struct ip_set_req_ipmap_create),
size);
return -EINVAL;
}
DP("from %u.%u.%u.%u to %u.%u.%u.%u",
HIPQUAD(req->from), HIPQUAD(req->to));
if (req->from > req->to) {
DP("bad ip range");
return -ENOEXEC;
}
map = kmalloc(sizeof(struct ip_set_ipmap), GFP_KERNEL);
if (!map) {
DP("out of memory for %d bytes",
sizeof(struct ip_set_ipmap));
return -ENOMEM;
}
map->first_ip = req->from;
map->last_ip = req->to;
map->netmask = req->netmask;
if (req->netmask == 0xFFFFFFFF) {
map->hosts = 1;
map->sizeid = map->last_ip - map->first_ip + 1;
} else {
unsigned int mask_bits, netmask_bits;
ip_set_ip_t mask;
map->first_ip &= map->netmask; /* Should we better bark? */
mask = range_to_mask(map->first_ip, map->last_ip, &mask_bits);
netmask_bits = mask_to_bits(map->netmask);
if ((!mask && (map->first_ip || map->last_ip != 0xFFFFFFFF))
|| netmask_bits <= mask_bits)
return -ENOEXEC;
DP("mask_bits %u, netmask_bits %u",
mask_bits, netmask_bits);
map->hosts = 2 << (32 - netmask_bits - 1);
map->sizeid = 2 << (netmask_bits - mask_bits - 1);
}
if (map->sizeid > MAX_RANGE + 1) {
ip_set_printk("range too big (max %d addresses)",
MAX_RANGE+1);
kfree(map);
return -ENOEXEC;
}
DP("hosts %u, sizeid %u", map->hosts, map->sizeid);
newbytes = bitmap_bytes(0, map->sizeid - 1);
map->members = kmalloc(newbytes, GFP_KERNEL);
if (!map->members) {
DP("out of memory for %d bytes", newbytes);
kfree(map);
return -ENOMEM;
}
memset(map->members, 0, newbytes);
set->data = map;
return 0;
}