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git://git.code.sf.net/p/xtables-addons/xtables-addons
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58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
#ifndef __IP_SET_IPMAP_H
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#define __IP_SET_IPMAP_H
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#include "ip_set.h"
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#include "ip_set_bitmaps.h"
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#define SETTYPE_NAME "ipmap"
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struct ip_set_ipmap {
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void *members; /* the ipmap proper */
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ip_set_ip_t first_ip; /* host byte order, included in range */
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ip_set_ip_t last_ip; /* host byte order, included in range */
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ip_set_ip_t netmask; /* subnet netmask */
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ip_set_ip_t sizeid; /* size of set in IPs */
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ip_set_ip_t hosts; /* number of hosts in a subnet */
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u_int32_t size; /* size of the ipmap proper */
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};
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struct ip_set_req_ipmap_create {
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ip_set_ip_t from;
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ip_set_ip_t to;
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ip_set_ip_t netmask;
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};
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struct ip_set_req_ipmap {
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ip_set_ip_t ip;
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};
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static inline unsigned int
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mask_to_bits(ip_set_ip_t mask)
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{
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unsigned int bits = 32;
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ip_set_ip_t maskaddr;
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if (mask == 0xFFFFFFFF)
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return bits;
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maskaddr = 0xFFFFFFFE;
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while (--bits > 0 && maskaddr != mask)
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maskaddr <<= 1;
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return bits;
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}
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static inline ip_set_ip_t
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range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits)
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{
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ip_set_ip_t mask = 0xFFFFFFFE;
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*bits = 32;
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while (--(*bits) > 0 && mask && (to & mask) != from)
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mask <<= 1;
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return mask;
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}
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#endif /* __IP_SET_IPMAP_H */
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