/*
 * Copyright 2006-2012 Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _NET_IF_H
#define _NET_IF_H


#include <net/route.h>
#include <sys/socket.h>


#define IF_NAMESIZE     32

/* BSD specific/proprietary part */

#define IFNAMSIZ IF_NAMESIZE

struct ifreq_stream_stats {
        uint32_t        packets;
        uint32_t        errors;
        uint64_t        bytes;
        uint32_t        multicast_packets;
        uint32_t        dropped;
};

struct ifreq_stats {
        struct ifreq_stream_stats receive;
        struct ifreq_stream_stats send;
        uint32_t        collisions;
};

struct ifreq {
        char                    ifr_name[IF_NAMESIZE];
        union {
                struct sockaddr ifr_addr;
                struct sockaddr ifr_dstaddr;
                struct sockaddr ifr_broadaddr;
                struct sockaddr ifr_mask;
                struct ifreq_stats ifr_stats;
                struct route_entry ifr_route;
                int                     ifr_flags;
                int                     ifr_index;
                int                     ifr_metric;
                int                     ifr_mtu;
                int                     ifr_media;
                int                     ifr_type;
                int                     ifr_reqcap;
                int                     ifr_count;
                uint8_t*        ifr_data;
        };
};

/* used with SIOC_IF_ALIAS_ADD, SIOC_IF_ALIAS_GET, SIOC_ALIAS_SET */
struct ifaliasreq {
        char                    ifra_name[IF_NAMESIZE];
        int                             ifra_index;
        struct sockaddr_storage ifra_addr;
        union {
                struct sockaddr_storage ifra_broadaddr;
                struct sockaddr_storage ifra_destination;
        };
        struct sockaddr_storage ifra_mask;
        uint32_t                ifra_flags;
};


/* interface flags */
#define IFF_UP                          0x0001
#define IFF_BROADCAST           0x0002  /* valid broadcast address */
#define IFF_LOOPBACK            0x0008
#define IFF_POINTOPOINT         0x0010  /* point-to-point link */
#define IFF_NOARP                       0x0040  /* no address resolution */
#define IFF_AUTOUP                      0x0080  /* auto dial */
#define IFF_PROMISC                     0x0100  /* receive all packets */
#define IFF_ALLMULTI            0x0200  /* receive all multicast packets */
#define IFF_SIMPLEX                     0x0800  /* doesn't receive own transmissions */
#define IFF_LINK                        0x1000  /* has link */
#define IFF_AUTO_CONFIGURED     0x2000
#define IFF_CONFIGURING         0x4000
#define IFF_MULTICAST           0x8000  /* supports multicast */

/* interface alias flags */
#define IFAF_AUTO_CONFIGURED    0x0001  /* has been automatically configured */
#define IFAF_CONFIGURING                0x0002  /* auto configuration in progress */


/* used with SIOCGIFCOUNT, and SIOCGIFCONF */
struct ifconf {
        int                             ifc_len;        /* size of buffer */
        union {
                void*           ifc_buf;
                struct ifreq* ifc_req;
                int                     ifc_value;
        };
};

/* Macro that returns the size of a single address within a SIOCGIFCONF buffer;
   it looks like this because of compatibility with other platforms. */
#define _SIZEOF_ADDR_IFREQ(request) \
        (IF_NAMESIZE + (request).ifr_addr.sa_len > (int)sizeof(struct ifreq) \
                ? IF_NAMESIZE + (request).ifr_addr.sa_len : sizeof(struct ifreq))


/* POSIX definitions follow */

struct if_nameindex {
        unsigned                if_index;       /* positive interface index */
        char*                   if_name;        /* interface name, ie. "loopback" */
};


#ifdef __cplusplus
extern "C" {
#endif

unsigned if_nametoindex(const char* name);
char* if_indextoname(unsigned interfaceIndex, char* nameBuffer);
struct if_nameindex* if_nameindex(void);
void if_freenameindex(struct if_nameindex* interfaceArray);

#ifdef __cplusplus
}
#endif


#endif  /* _NET_IF_H */