X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..0a7de7458d150b5d4dffc935ba399be265ef0a1a:/bsd/netinet/udp.h

diff --git a/bsd/netinet/udp.h b/bsd/netinet/udp.h
index 18ed8c194..bad136e63 100644
--- a/bsd/netinet/udp.h
+++ b/bsd/netinet/udp.h
@@ -1,17 +1,20 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
- * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -19,8 +22,8 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * Copyright (c) 1982, 1986, 1993
@@ -60,16 +63,53 @@
 #ifndef _NETINET_UDP_H_
 #define _NETINET_UDP_H_
 #include <sys/appleapiopts.h>
+#include <sys/types.h>          /* u_short */
 
 /*
  * Udp protocol header.
  * Per RFC 768, September, 1981.
  */
 struct udphdr {
-	u_short	uh_sport;		/* source port */
-	u_short	uh_dport;		/* destination port */
-	u_short	uh_ulen;		/* udp length */
-	u_short	uh_sum;			/* udp checksum */
+	u_short uh_sport;               /* source port */
+	u_short uh_dport;               /* destination port */
+	u_short uh_ulen;                /* udp length */
+	u_short uh_sum;                 /* udp checksum */
+};
+
+/*
+ * User-settable options (used with setsockopt).
+ */
+#define UDP_NOCKSUM     0x01    /* don't checksum outbound payloads */
+#ifdef PRIVATE
+#define UDP_KEEPALIVE_OFFLOAD   0x02 /* Send keep-alive at a given interval */
+#endif /* PRIVATE */
+
+#ifdef PRIVATE
+/*
+ * This is a mechanism to offload keep-alive or heartbeat messages
+ * to the Wifi driver when the host processor is sleeping. The application
+ * will give a small amount of data that can be placed in the message. The
+ * application will also specify an interval at which these messages
+ * should be sent.
+ *
+ * The purpose of these messages is to detect loss of connectivity in
+ * peer-to-peer communication without keeping the host processor awake.
+ *
+ * The application will pass this data to the kernel using setsockopt. It
+ * can set the interval to 0 to disable keepalive offload.
+ */
+#define UDP_KEEPALIVE_OFFLOAD_DATA_SIZE 32
+
+/* Maximum keep alive interval in seconds */
+#define UDP_KEEPALIVE_INTERVAL_MAX_SECONDS      65536
+
+struct udp_keepalive_offload {
+	u_char ka_data[UDP_KEEPALIVE_OFFLOAD_DATA_SIZE];
+	u_int16_t ka_interval;          /* interval in seconds */
+	u_int8_t ka_data_len;           /* valid length of ka_data */
+	u_int8_t ka_type;               /* type of application */
+#define UDP_KEEPALIVE_OFFLOAD_TYPE_AIRPLAY      0x1
 };
 
-#endif
+#endif /* PRIVATE */
+#endif /* _NETINET_UDP_H */