1 #ifndef __IP_SET_NETHASH_H
2 #define __IP_SET_NETHASH_H
4 #include <linux/netfilter_ipv4/ip_set.h>
6 #define SETTYPE_NAME "nethash"
7 #define MAX_RANGE 0x0000FFFF
9 struct ip_set_nethash {
10 ip_set_ip_t *members; /* the nethash proper */
11 uint32_t elements; /* number of elements */
12 uint32_t hashsize; /* hash size */
13 uint16_t probes; /* max number of probes */
14 uint16_t resize; /* resize factor in percent */
15 unsigned char cidr[30]; /* CIDR sizes */
16 void *initval[0]; /* initvals for jhash_1word */
19 struct ip_set_req_nethash_create {
25 struct ip_set_req_nethash {
30 static unsigned char shifts[] = {255, 253, 249, 241, 225, 193, 129, 1};
32 static inline ip_set_ip_t
33 pack(ip_set_ip_t ip, unsigned char cidr)
35 ip_set_ip_t addr, *paddr = &addr;
36 unsigned char n, t, *a;
38 addr = htonl(ip & (0xFFFFFFFF << (32 - (cidr))));
40 DP("ip:%u.%u.%u.%u/%u", NIPQUAD(addr), cidr);
44 a = &((unsigned char *)paddr)[n];
45 *a = *a /(1 << (8 - t)) + shifts[t];
47 DP("n: %u, t: %u, a: %u", n, t, *a);
48 DP("ip:%u.%u.%u.%u/%u, %u.%u.%u.%u",
49 HIPQUAD(ip), cidr, NIPQUAD(addr));
55 #endif /* __IP_SET_NETHASH_H */