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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 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: ll/89
*/
#ifndef _DEVICE_NET_IO_H_
#define _DEVICE_NET_IO_H_
/*
* Utilities for playing with network messages.
*/
#include <mach/machine/vm_types.h>
#include <ipc/ipc_kmsg.h>
#include <kern/macro_help.h>
#include <kern/lock.h>
#include <kern/kalloc.h>
#include <device/if_hdr.h>
#include <device/io_req.h>
#include <device/net_status.h>
/*
* A network packet is wrapped in a kernel message while in
* the kernel.
*/
#define net_kmsg(kmsg) ((net_rcv_msg_t)&(kmsg)->ikm_header)
/*
* Interrupt routines may allocate and free net_kmsgs with these
* functions. net_kmsg_get may return IKM_NULL.
*/
extern ipc_kmsg_t net_kmsg_get(void);
extern void net_kmsg_put(ipc_kmsg_t);
/*
* Network utility routines.
*/
extern void net_ast();
extern void net_packet(struct ifnet *, ipc_kmsg_t, unsigned int, boolean_t);
extern void net_filter(ipc_kmsg_t, ipc_kmsg_queue_t);
extern io_return_t net_getstat(struct ifnet *, dev_flavor_t, dev_status_t,
natural_t *);
extern io_return_t net_write(struct ifnet *, int (*)(), io_req_t);
/*
* Non-interrupt code may allocate and free net_kmsgs with these functions.
*/
extern vm_size_t net_kmsg_size;
extern void net_kmsg_collect (void);
#define net_kmsg_alloc() ((ipc_kmsg_t) kalloc(net_kmsg_size))
#define net_kmsg_free(kmsg) kfree((vm_offset_t) (kmsg), net_kmsg_size)
#endif /* _DEVICE_NET_IO_H_ */
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