root/include/linux/netfilter/ipset/ip_set_bitmap.h

/* [<][>][^][v][top][bottom][index][help] */

INCLUDED FROM

DEFINITIONS

This source file includes following definitions.
  1. range_to_mask
#ifndef __IP_SET_BITMAP_H
#define __IP_SET_BITMAP_H

#include <uapi/linux/netfilter/ipset/ip_set_bitmap.h>

#define IPSET_BITMAP_MAX_RANGE  0x0000FFFF

enum {
        IPSET_ADD_FAILED = 1,
        IPSET_ADD_STORE_PLAIN_TIMEOUT,
        IPSET_ADD_START_STORED_TIMEOUT,
};

/* Common functions */

static inline u32
range_to_mask(u32 from, u32 to, u8 *bits)
{
        u32 mask = 0xFFFFFFFE;

        *bits = 32;
        while (--(*bits) > 0 && mask && (to & mask) != from)
                mask <<= 1;

        return mask;
}

#endif /* __IP_SET_BITMAP_H */
/* [<][>][^][v][top][bottom][index][help] */