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Annotation of OSKit-Mach/device/net_io.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  *
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  *
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  *
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  *
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     Author: David B. Golub, Carnegie Mellon University
        !            28:  *     Date:   ll/89
        !            29:  */
        !            30: 
        !            31: #ifndef        _DEVICE_NET_IO_H_
        !            32: #define        _DEVICE_NET_IO_H_
        !            33: 
        !            34: /*
        !            35:  * Utilities for playing with network messages.
        !            36:  */
        !            37: 
        !            38: #include <mach/machine/vm_types.h>
        !            39: #include <ipc/ipc_kmsg.h>
        !            40: 
        !            41: #include <kern/macro_help.h>
        !            42: #include <kern/lock.h>
        !            43: #include <kern/kalloc.h>
        !            44: 
        !            45: #include <device/net_status.h>
        !            46: 
        !            47: /*
        !            48:  * A network packet is wrapped in a kernel message while in
        !            49:  * the kernel.
        !            50:  */
        !            51: 
        !            52: #define        net_kmsg(kmsg)  ((net_rcv_msg_t)&(kmsg)->ikm_header)
        !            53: 
        !            54: /*
        !            55:  * Interrupt routines may allocate and free net_kmsgs with these
        !            56:  * functions.  net_kmsg_get may return IKM_NULL.
        !            57:  */
        !            58: 
        !            59: extern ipc_kmsg_t net_kmsg_get();
        !            60: extern void net_kmsg_put();
        !            61: 
        !            62: /*
        !            63:  * Network utility routines.
        !            64:  */
        !            65: 
        !            66: extern void net_packet();
        !            67: extern void net_filter();
        !            68: extern io_return_t net_getstat();
        !            69: extern io_return_t net_write();
        !            70: 
        !            71: /*
        !            72:  * Non-interrupt code may allocate and free net_kmsgs with these functions.
        !            73:  */
        !            74: 
        !            75: extern vm_size_t net_kmsg_size;
        !            76: 
        !            77: #define net_kmsg_alloc()       ((ipc_kmsg_t) kalloc(net_kmsg_size))
        !            78: #define net_kmsg_free(kmsg)    kfree((vm_offset_t) (kmsg), net_kmsg_size)
        !            79: 
        !            80: #endif /* _DEVICE_NET_IO_H_ */

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