1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 * Copyright (c) 1982, 1986, 1993
30 * The Regents of the University of California. All rights reserved.
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by the University of
43 * California, Berkeley and its contributors.
44 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)udp.h 8.1 (Berkeley) 6/10/93
61 */
62
63#ifndef _NETINET_UDP_H_
64#define _NETINET_UDP_H_
65#include <sys/appleapiopts.h>
66#include <sys/types.h> /* u_short */
67
68/*
69 * Udp protocol header.
70 * Per RFC 768, September, 1981.
71 */
72struct udphdr {
73 u_short uh_sport; /* source port */
74 u_short uh_dport; /* destination port */
75 u_short uh_ulen; /* udp length */
76 u_short uh_sum; /* udp checksum */
77};
78
79/*
80 * User-settable options (used with setsockopt).
81 */
82#define UDP_NOCKSUM 0x01 /* don't checksum outbound payloads */
83#ifdef PRIVATE
84#define UDP_KEEPALIVE_OFFLOAD 0x02 /* Send keep-alive at a given interval */
85#endif /* PRIVATE */
86
87#ifdef PRIVATE
88/*
89 * This is a mechanism to offload keep-alive or heartbeat messages
90 * to the Wifi driver when the host processor is sleeping. The application
91 * will give a small amount of data that can be placed in the message. The
92 * application will also specify an interval at which these messages
93 * should be sent.
94 *
95 * The purpose of these messages is to detect loss of connectivity in
96 * peer-to-peer communication without keeping the host processor awake.
97 *
98 * The application will pass this data to the kernel using setsockopt. It
99 * can set the interval to 0 to disable keepalive offload.
100 */
101#define UDP_KEEPALIVE_OFFLOAD_DATA_SIZE 32
102
103/* Maximum keep alive interval in seconds */
104#define UDP_KEEPALIVE_INTERVAL_MAX_SECONDS 65536
105
106struct udp_keepalive_offload {
107 u_char ka_data[UDP_KEEPALIVE_OFFLOAD_DATA_SIZE];
108 u_int16_t ka_interval; /* interval in seconds */
109 u_int8_t ka_data_len; /* valid length of ka_data */
110 u_int8_t ka_type; /* type of application */
111#define UDP_KEEPALIVE_OFFLOAD_TYPE_AIRPLAY 0x1
112};
113
114#endif /* PRIVATE */
115#endif /* _NETINET_UDP_H */
116