ip_utils.h

/* 
 * cc-common
 *
 * Alistair King, CAIDA, UC San Diego
 * corsaro-info@caida.org
 * 
 * Copyright (C) 2012 The Regents of the University of California.
 * 
 * This file is part of cc-common.
 *
 * cc-common is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * cc-common is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with cc-common.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef __IP_UTILS_H
#define __IP_UTILS_H

typedef struct ip_prefix 
{
  uint32_t addr;
  uint8_t masklen;
} ip_prefix_t;

typedef struct ip_prefix_list
{
  ip_prefix_t prefix;
  struct ip_prefix_list *next;
} ip_prefix_list_t;


uint32_t ip_set_bit(uint32_t addr, int bitno, int val);

uint32_t ip_netmask(int masklen);

uint32_t ip_broadcast_addr(uint32_t addr, int masklen);

uint32_t ip_network_addr(uint32_t addr, int masklen);

int ip_range_to_prefix(ip_prefix_t lower, ip_prefix_t upper, 
                       ip_prefix_list_t **pfx_list);

void ip_prefix_list_free(ip_prefix_list_t *pfx_list);

#endif /* __IP_UTILS_H */