addr.h

Go to the documentation of this file.

/*
 * addr.h
 *
 * Network address operations.
 *
 * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
 *
 * $Id: addr.h,v 1.12 2003/02/27 03:44:55 dugsong Exp $
 */

#ifndef DNET_ADDR_H
#define DNET_ADDR_H

#define ADDR_TYPE_NONE          0       /* No address set */
#define ADDR_TYPE_ETH           1       /* Ethernet */
#define ADDR_TYPE_IP            2       /* Internet Protocol v4 */
#define ADDR_TYPE_IP6           3       /* Internet Protocol v6 */

struct addr {
        uint16_t                addr_type;
        uint16_t                addr_bits;
        union {
                eth_addr_t      __eth;
                ip_addr_t       __ip;
                ip6_addr_t      __ip6;
                
                uint8_t         __data8[16];
                uint16_t        __data16[8];
                uint32_t        __data32[4];
        } __addr_u;
};
#define addr_eth        __addr_u.__eth
#define addr_ip         __addr_u.__ip
#define addr_ip6        __addr_u.__ip6
#define addr_data8      __addr_u.__data8
#define addr_data16     __addr_u.__data16
#define addr_data32     __addr_u.__data32

#define addr_pack(addr, type, bits, data, len) do {     \
        (addr)->addr_type = type;                       \
        (addr)->addr_bits = bits;                       \
        memmove((addr)->addr_data8, (char *)data, len); \
} while (0)

__BEGIN_DECLS
int      addr_cmp(const struct addr *a, const struct addr *b);

int      addr_bcast(const struct addr *a, struct addr *b);
int      addr_net(const struct addr *a, struct addr *b);

char    *addr_ntop(const struct addr *src, char *dst, size_t size);
int      addr_pton(const char *src, struct addr *dst);

char    *addr_ntoa(const struct addr *a);
#define  addr_aton      addr_pton

int      addr_ntos(const struct addr *a, struct sockaddr *sa);
int      addr_ston(const struct sockaddr *sa, struct addr *a);

int      addr_btos(uint16_t bits, struct sockaddr *sa);
int      addr_stob(const struct sockaddr *sa, uint16_t *bits);

int      addr_btom(uint16_t bits, void *mask, size_t size);
int      addr_mtob(const void *mask, size_t size, uint16_t *bits);
__END_DECLS

#endif /* DNET_ADDR_H */

---