LCOM1920-T02G10

#ifndef _MINIX_IF_H

#define _MINIX_IF_H

#include <net/if.h>

#include <net/if_media.h>

/*

 * MINIX3-specific extensions to the network interface headers.  These

 * extensions are necessary because NetBSD IF uses a few ioctl(2) structure

 * formats that contain pointers--something that MINIX3 has to avoid, due to

 * its memory granting mechanisms.  Thus, those ioctl(2) calls have to be

 * converted from NetBSD to MINIX3 format.  We currently do that in libc.

 * This header specifies the numbers and formats for the MINIX3 versions.

 *

 * The general idea is that we rewrite the ioctl request data to include both

 * the original structure and a buffer for the array of values to which the

 * original structure uses a pointer.  Important: in those cases, the original

 * structure is expected to be the first element of the replacement structure.

 *

 * There is typically no configured upper bound for the maximum number of

 * values in the array, and so we pick size values that are hopefully always

 * oversized and yet keep the ioctl sizes within the range of regular ioctls

 * (4095 bytes, as per sys/ioccom.h).  If there may be larger amounts of data,

 * we have to use "big" ioctls.

 *

 * For the replacement ioctl codes, we use the original ioctl class and number

 * with a different size.  That should virtually eliminate the possibility of

 * accidental collisions.

 */

/* SIOCGIFMEDIA: retrieve interface media status and types. */

#define MINIX_IF_MAXMEDIA        256

struct minix_ifmediareq {

        struct ifmediareq mifm_ifm;                        /* MUST be first */

        int mifm_list[MINIX_IF_MAXMEDIA];

};

#define MINIX_SIOCGIFMEDIA        _IOWR('i', 54, struct minix_ifmediareq)

/* SIOCIFGCLONERS: retrieve interface "cloners" (virtual types). */

#define MINIX_IF_MAXCLONERS        128

struct minix_if_clonereq {

        struct if_clonereq mifcr_ifcr;                        /* MUST be first */

        char mifcr_buffer[MINIX_IF_MAXCLONERS * IFNAMSIZ];

};

#define MINIX_SIOCIFGCLONERS        _IOWR('i', 120, struct minix_if_clonereq)

#endif /* !_MINIX_IF_H */