/usr/src/xtables-addons-1.40/ipset-6/pfxlen.h is in xtables-addons-dkms 1.40-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | #ifndef _PFXLEN_H
#define _PFXLEN_H
#include <asm/byteorder.h>
#include <linux/netfilter.h>
#include <net/tcp.h>
/* Prefixlen maps, by Jan Engelhardt */
extern const union nf_inet_addr ip_set_netmask_map[];
extern const union nf_inet_addr ip_set_hostmask_map[];
static inline __be32
ip_set_netmask(u8 pfxlen)
{
return ip_set_netmask_map[pfxlen].ip;
}
static inline const __be32 *
ip_set_netmask6(u8 pfxlen)
{
return &ip_set_netmask_map[pfxlen].ip6[0];
}
static inline u32
ip_set_hostmask(u8 pfxlen)
{
return (__force u32) ip_set_hostmask_map[pfxlen].ip;
}
static inline const __be32 *
ip_set_hostmask6(u8 pfxlen)
{
return &ip_set_hostmask_map[pfxlen].ip6[0];
}
extern u32 ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr);
#define ip_set_mask_from_to(from, to, cidr) \
do { \
from &= ip_set_hostmask(cidr); \
to = from | ~ip_set_hostmask(cidr); \
} while (0)
#endif /*_PFXLEN_H */
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