/*      $NetBSD: netif.h,v 1.4 1995/09/14 23:45:30 pk Exp $     */


#ifndef __SYS_LIBNETBOOT_NETIF_H
#define __SYS_LIBNETBOOT_NETIF_H
#include "iodesc.h"

struct netif_driver {
        const   char *netif_bname;
        int     (*netif_match)(struct netif *, void *);
        int     (*netif_probe)(struct netif *, void *);
        void    (*netif_init)(struct iodesc *, void *);
        ssize_t (*netif_get)(struct iodesc *, void **, time_t);
        ssize_t (*netif_put)(struct iodesc *, void *, size_t);
        void    (*netif_end)(struct netif *);
        struct  netif_dif *netif_ifs;
        int     netif_nifs;
};

struct netif_dif {
        int             dif_unit;
        int             dif_nsel;
        struct netif_stats *dif_stats;
        void            *dif_private;
        /* the following fields are used internally by the netif layer */
        u_long          dif_used;
};

struct netif_stats {
        int     collisions;
        int     collision_error;
        int     missed;
        int     sent;
        int     received;
        int     deferred;
        int     overflow;
};

struct netif {
        struct netif_driver     *nif_driver;
        int                     nif_unit;
        int                     nif_sel;
        void                    *nif_devdata;
};

extern struct netif_driver      *netif_drivers[];       /* machdep */
extern int                      n_netif_drivers;

extern int                      netif_debug;

void            netif_init(void);
struct netif    *netif_select(void *);
int             netif_probe(struct netif *, void *);
void            netif_attach(struct netif *, struct iodesc *, void *);
void            netif_detach(struct netif *);
ssize_t         netif_get(struct iodesc *, void **, time_t);
ssize_t         netif_put(struct iodesc *, void *, size_t);

int             netif_open(void *);
int             netif_close(int);

struct iodesc   *socktodesc(int);
        
#endif /* __SYS_LIBNETBOOT_NETIF_H */