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 66 #ifndef DRIVERKIT 67 #include <sys/appleapiopts.h> 68 #include <sys/types.h> /* u_short */ 69 #else 70 #include <sys/_types.h> 71 #include <sys/_types/_u_char.h> 72 #include <sys/_types/_u_short.h> 73 #endif /* DRIVERKIT */ 74 75 /* 76 * Udp protocol header. 77 * Per RFC 768, September, 1981. 78 */ 79 struct udphdr { 80 u_short uh_sport; /* source port */ 81 u_short uh_dport; /* destination port */ 82 u_short uh_ulen; /* udp length */ 83 u_short uh_sum; /* udp checksum */ 84 }; 85 86 /* 87 * User-settable options (used with setsockopt). 88 */ 89 #define UDP_NOCKSUM 0x01 /* don't checksum outbound payloads */ 90 #ifdef PRIVATE 91 #define UDP_KEEPALIVE_OFFLOAD 0x02 /* Send keep-alive at a given interval */ 92 #endif /* PRIVATE */ 93 94 #ifdef PRIVATE 95 /* 96 * This is a mechanism to offload keep-alive or heartbeat messages 97 * to the Wifi driver when the host processor is sleeping. The application 98 * will give a small amount of data that can be placed in the message. The 99 * application will also specify an interval at which these messages 100 * should be sent. 101 * 102 * The purpose of these messages is to detect loss of connectivity in 103 * peer-to-peer communication without keeping the host processor awake. 104 * 105 * The application will pass this data to the kernel using setsockopt. It 106 * can set the interval to 0 to disable keepalive offload. 107 */ 108 #define UDP_KEEPALIVE_OFFLOAD_DATA_SIZE 32 109 110 /* Maximum keep alive interval in seconds */ 111 #define UDP_KEEPALIVE_INTERVAL_MAX_SECONDS 65536 112 113 struct udp_keepalive_offload { 114 u_char ka_data[UDP_KEEPALIVE_OFFLOAD_DATA_SIZE]; 115 u_int16_t ka_interval; /* interval in seconds */ 116 u_int8_t ka_data_len; /* valid length of ka_data */ 117 u_int8_t ka_type; /* type of application */ 118 #define UDP_KEEPALIVE_OFFLOAD_TYPE_AIRPLAY 0x1 119 }; 120 121 #endif /* PRIVATE */ 122 #endif /* _NETINET_UDP_H */ 123