X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..4d15aeb193b2c68f1d38666c317f8d3734f5f083:/bsd/netinet/udp.h

diff --git a/bsd/netinet/udp.h b/bsd/netinet/udp.h
index 18ed8c194..3f4a47346 100644
--- a/bsd/netinet/udp.h
+++ b/bsd/netinet/udp.h
@@ -1,16 +1,19 @@
 /*
  * 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
@@ -20,7 +23,7 @@
  * 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
@@ -60,6 +63,7 @@
 #ifndef _NETINET_UDP_H_
 #define _NETINET_UDP_H_
 #include <sys/appleapiopts.h>
+#include <sys/types.h>		/* u_short */
 
 /*
  * Udp protocol header.
@@ -72,4 +76,40 @@ struct udphdr {
 	u_short	uh_sum;			/* udp checksum */
 };
 
-#endif
+/*
+ * 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 /* PRIVATE */
+#endif /* _NETINET_UDP_H */