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#ifndef __IP_SET_IPMAP_H
#define __IP_SET_IPMAP_H
#include <linux/netfilter_ipv4/ip_set.h>
#define SETTYPE_NAME "ipmap"
#define MAX_RANGE 0x0000FFFF
struct ip_set_ipmap {
void *members; /* the ipmap proper */
ip_set_ip_t first_ip; /* host byte order, included in range */
ip_set_ip_t last_ip; /* host byte order, included in range */
ip_set_ip_t netmask; /* subnet netmask */
ip_set_ip_t sizeid; /* size of set in IPs */
ip_set_ip_t hosts; /* number of hosts in a subnet */
};
struct ip_set_req_ipmap_create {
ip_set_ip_t from;
ip_set_ip_t to;
ip_set_ip_t netmask;
};
struct ip_set_req_ipmap {
ip_set_ip_t ip;
};
unsigned int
mask_to_bits(ip_set_ip_t mask)
{
unsigned int bits = 32;
ip_set_ip_t maskaddr;
if (mask == 0xFFFFFFFF)
return bits;
maskaddr = 0xFFFFFFFE;
while (--bits >= 0 && maskaddr != mask)
maskaddr <<= 1;
return bits;
}
ip_set_ip_t
range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits)
{
ip_set_ip_t mask = 0xFFFFFFFE;
*bits = 32;
while (--(*bits) >= 0 && mask && (to & mask) != from)
mask <<= 1;
return mask;
}
#endif /* __IP_SET_IPMAP_H */
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