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Annotation of OSKit-Mach/device/net_io.h, revision 1.1.1.1

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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