45 lines
902 B
C
45 lines
902 B
C
#ifndef _PFXLEN_H
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#define _PFXLEN_H
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#include <asm/byteorder.h>
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#include <linux/netfilter.h>
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#include <net/tcp.h>
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/* Prefixlen maps, by Jan Engelhardt */
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extern const union nf_inet_addr ip_set_netmask_map[];
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extern const union nf_inet_addr ip_set_hostmask_map[];
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static inline __be32
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ip_set_netmask(u8 pfxlen)
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{
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return ip_set_netmask_map[pfxlen].ip;
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}
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static inline const __be32 *
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ip_set_netmask6(u8 pfxlen)
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{
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return &ip_set_netmask_map[pfxlen].ip6[0];
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}
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static inline u32
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ip_set_hostmask(u8 pfxlen)
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{
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return (__force u32) ip_set_hostmask_map[pfxlen].ip;
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}
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static inline const __be32 *
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ip_set_hostmask6(u8 pfxlen)
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{
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return &ip_set_hostmask_map[pfxlen].ip6[0];
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}
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extern u32 ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr);
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#define ip_set_mask_from_to(from, to, cidr) \
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do { \
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from &= ip_set_hostmask(cidr); \
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to = from | ~ip_set_hostmask(cidr); \
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} while (0)
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#endif /*_PFXLEN_H */
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