// SPDX-License-Identifier: GPL-2.0-only
#include <linux/export.h>
#include <linux/netfilter/ipset/pfxlen.h>
/* Prefixlen maps for fast conversions, by Jan Engelhardt. */
#ifdef E
#undef E
#endif
#define PREFIXES_MAP \
E(0x00000000, 0x00000000, 0x00000000, 0x00000000), \
E(0x80000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xC0000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xE0000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xF0000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xF8000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFC000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFE000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFF000000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFF800000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFC00000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFE00000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFF00000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFF80000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFC0000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFE0000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFF0000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFF8000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFC000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFE000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFF000, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFF800, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFC00, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFE00, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFF00, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFF80, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFC0, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFE0, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFF0, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFF8, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFC, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFE, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0x80000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xC0000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xE0000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xF0000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xF8000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFC000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFE000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFF000000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFF800000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFC00000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFE00000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFF00000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFF80000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFC0000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFE0000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFF0000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFF8000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFC000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFE000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFF000, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFF800, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFC00, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFE00, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFF00, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFF80, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFC0, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFE0, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFF0, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFF8, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFC, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFE, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0x80000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x80000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE), \
E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF),
#define E(a, b, c, d) \
{.ip6 = { \
htonl(a), htonl(b), \
htonl(c), htonl(d), \
} }
/* This table works for both IPv4 and IPv6;
* just use prefixlen_netmask_map[prefixlength].ip.
*/
const union nf_inet_addr ip_set_netmask_map[] = {
PREFIXES_MAP
};
EXPORT_SYMBOL_GPL(ip_set_netmask_map);
#undef E
#define E(a, b, c, d) \
{.ip6 = { (__force __be32)a, (__force __be32)b, \
(__force __be32)c, (__force __be32)d, \
} }
/* This table works for both IPv4 and IPv6;
* just use prefixlen_hostmask_map[prefixlength].ip.
*/
const union nf_inet_addr ip_set_hostmask_map[] = {
PREFIXES_MAP
};
EXPORT_SYMBOL_GPL(ip_set_hostmask_map);
/* Find the largest network which matches the range from left, in host order. */
u32
ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr)
{
u32 last;
u8 i;
for (i = 1; i < 32; i++) {
if ((from & ip_set_hostmask(i)) != from)
continue;
last = from | ~ip_set_hostmask(i);
if (!after(last, to)) {
*cidr = i;
return last;
}
}
*cidr = 32;
return from;
}
EXPORT_SYMBOL_GPL(ip_set_range_to_cidr);
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