1#ifndef _PFXLEN_H 2#define _PFXLEN_H 3 4#include <asm/byteorder.h> 5#include <linux/netfilter.h> 6#include <net/tcp.h> 7 8/* Prefixlen maps, by Jan Engelhardt */ 9extern const union nf_inet_addr ip_set_netmask_map[]; 10extern const union nf_inet_addr ip_set_hostmask_map[]; 11 12static inline __be32 13ip_set_netmask(u8 pfxlen) 14{ 15 return ip_set_netmask_map[pfxlen].ip; 16} 17 18static inline const __be32 * 19ip_set_netmask6(u8 pfxlen) 20{ 21 return &ip_set_netmask_map[pfxlen].ip6[0]; 22} 23 24static inline u32 25ip_set_hostmask(u8 pfxlen) 26{ 27 return (__force u32) ip_set_hostmask_map[pfxlen].ip; 28} 29 30static inline const __be32 * 31ip_set_hostmask6(u8 pfxlen) 32{ 33 return &ip_set_hostmask_map[pfxlen].ip6[0]; 34} 35 36extern u32 ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr); 37 38#define ip_set_mask_from_to(from, to, cidr) \ 39do { \ 40 from &= ip_set_hostmask(cidr); \ 41 to = from | ~ip_set_hostmask(cidr); \ 42} while (0) 43 44#endif /*_PFXLEN_H */ 45