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/*
* Mach Operating System
* Copyright (c) 1993-1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Author: David B. Golub, Carnegie Mellon University
* Date: 3/98
*
* Network IO.
*
* Packet filter code taken from vaxif/enet.c written
* CMU and Stanford.
*/
/* the code copied from device/net_io.c in Mach */
#include <string.h>
#include <arpa/inet.h>
#include <mach.h>
#include "vdev.h"
io_return_t
dev_getstat(struct vether_device *ifp, dev_flavor_t flavor,
dev_status_t status, natural_t *count)
{
switch (flavor) {
case NET_STATUS:
{
register struct net_status *ns = (struct net_status *)status;
if (*count < NET_STATUS_COUNT)
return (D_INVALID_OPERATION);
ns->min_packet_size = ifp->if_header_size;
ns->max_packet_size = ifp->if_header_size + ifp->if_mtu;
ns->header_format = ifp->if_header_format;
ns->header_size = ifp->if_header_size;
ns->address_size = ifp->if_address_size;
ns->flags = ifp->if_flags;
ns->mapped_size = 0;
*count = NET_STATUS_COUNT;
break;
}
case NET_ADDRESS:
{
register int addr_byte_count;
register int addr_int_count;
register int i;
addr_byte_count = ifp->if_address_size;
addr_int_count = (addr_byte_count + (sizeof(int)-1))
/ sizeof(int);
if (*count < addr_int_count) {
return (D_INVALID_OPERATION);
}
memcpy(status, ifp->if_address, addr_byte_count);
if (addr_byte_count < addr_int_count * sizeof(int))
memset((char *)status + addr_byte_count, 0,
(addr_int_count * sizeof(int)
- addr_byte_count));
for (i = 0; i < addr_int_count; i++) {
register int word;
word = status[i];
status[i] = htonl(word);
}
*count = addr_int_count;
break;
}
default:
return (D_INVALID_OPERATION);
}
return (D_SUCCESS);
}
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