X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e5568f75972dfc723778653c11cb6b4dc825716a..b0d623f7f2ae71ed96e60569f61f9a9a27016e80:/bsd/netinet/tcp.h?ds=sidebyside

diff --git a/bsd/netinet/tcp.h b/bsd/netinet/tcp.h
index 30479bd88..3b4d8f92f 100644
--- a/bsd/netinet/tcp.h
+++ b/bsd/netinet/tcp.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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. 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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
@@ -58,9 +64,12 @@
 #ifndef _NETINET_TCP_H_
 #define _NETINET_TCP_H_
 #include <sys/appleapiopts.h>
+#include <sys/_types.h>
+#include <machine/endian.h>
 
-typedef	u_int32_t tcp_seq;
-typedef u_int32_t tcp_cc;		/* connection count per rfc1644 */
+#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
+typedef	__uint32_t tcp_seq;
+typedef __uint32_t tcp_cc;		/* connection count per rfc1644 */
 
 #define tcp6_seq	tcp_seq	/* for KAME src sync over BSD*'s */
 #define tcp6hdr		tcphdr	/* for KAME src sync over BSD*'s */
@@ -70,19 +79,19 @@ typedef u_int32_t tcp_cc;		/* connection count per rfc1644 */
  * Per RFC 793, September, 1981.
  */
 struct tcphdr {
-	u_short	th_sport;		/* source port */
-	u_short	th_dport;		/* destination port */
+	unsigned short	th_sport;	/* source port */
+	unsigned short	th_dport;	/* destination port */
 	tcp_seq	th_seq;			/* sequence number */
 	tcp_seq	th_ack;			/* acknowledgement number */
-#if BYTE_ORDER == LITTLE_ENDIAN
-	u_int	th_x2:4,		/* (unused) */
-		th_off:4;		/* data offset */
+#if __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN
+	unsigned int	th_x2:4,	/* (unused) */
+			th_off:4;	/* data offset */
 #endif
-#if BYTE_ORDER == BIG_ENDIAN
-	u_int	th_off:4,		/* data offset */
-		th_x2:4;		/* (unused) */
+#if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN
+	unsigned int	th_off:4,	/* data offset */
+			th_x2:4;	/* (unused) */
 #endif
-	u_char	th_flags;
+	unsigned char	th_flags;
 #define	TH_FIN	0x01
 #define	TH_SYN	0x02
 #define	TH_RST	0x04
@@ -93,26 +102,29 @@ struct tcphdr {
 #define	TH_CWR	0x80
 #define	TH_FLAGS	(TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG|TH_ECE|TH_CWR)
 
-	u_short	th_win;			/* window */
-	u_short	th_sum;			/* checksum */
-	u_short	th_urp;			/* urgent pointer */
+	unsigned short	th_win;		/* window */
+	unsigned short	th_sum;		/* checksum */
+	unsigned short	th_urp;		/* urgent pointer */
 };
 
 #define	TCPOPT_EOL		0
 #define	TCPOPT_NOP		1
 #define	TCPOPT_MAXSEG		2
-#define    TCPOLEN_MAXSEG		4
+#define TCPOLEN_MAXSEG		4
 #define TCPOPT_WINDOW		3
-#define    TCPOLEN_WINDOW		3
+#define TCPOLEN_WINDOW		3
 #define TCPOPT_SACK_PERMITTED	4		/* Experimental */
-#define    TCPOLEN_SACK_PERMITTED	2
+#define TCPOLEN_SACK_PERMITTED	2
 #define TCPOPT_SACK		5		/* Experimental */
+#define TCPOLEN_SACK		8		/* len of sack block */
 #define TCPOPT_TIMESTAMP	8
-#define    TCPOLEN_TIMESTAMP		10
-#define    TCPOLEN_TSTAMP_APPA		(TCPOLEN_TIMESTAMP+2) /* appendix A */
-#define    TCPOPT_TSTAMP_HDR		\
+#define TCPOLEN_TIMESTAMP	10
+#define TCPOLEN_TSTAMP_APPA		(TCPOLEN_TIMESTAMP+2) /* appendix A */
+#define TCPOPT_TSTAMP_HDR		\
     (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
 
+#define	MAX_TCPOPTLEN		40	/* Absolute maximum TCP options len */
+
 #define	TCPOPT_CC		11		/* CC options: RFC-1644 */
 #define TCPOPT_CCNEW		12
 #define TCPOPT_CCECHO		13
@@ -120,6 +132,17 @@ struct tcphdr {
 #define	   TCPOLEN_CC_APPA		(TCPOLEN_CC+2)
 #define	   TCPOPT_CC_HDR(ccopt)		\
     (TCPOPT_NOP<<24|TCPOPT_NOP<<16|(ccopt)<<8|TCPOLEN_CC)
+#define	TCPOPT_SIGNATURE		19	/* Keyed MD5: RFC 2385 */
+#define	   TCPOLEN_SIGNATURE		18
+
+/* Option definitions */
+#define TCPOPT_SACK_PERMIT_HDR	\
+(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK_PERMITTED<<8|TCPOLEN_SACK_PERMITTED)
+#define	TCPOPT_SACK_HDR		(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK<<8)
+/* Miscellaneous constants */
+#define	MAX_SACK_BLKS	6	/* Max # SACK blocks stored at sender side */
+#define	TCP_MAX_SACK	3	/* MAX # SACKs sent in any segment */
+
 
 /*
  * Default maximum segment size for TCP.
@@ -140,6 +163,15 @@ struct tcphdr {
  */
 #define	TCP_MINMSS 216
 
+/*
+ * TCP_MINMSSOVERLOAD is defined to be 1000 which should cover any type
+ * of interactive TCP session.
+ * See tcp_subr.c tcp_minmssoverload SYSCTL declaration and tcp_input.c
+ * for more comments.
+ * Setting this to "0" disables the minmssoverload check.
+ */
+#define	TCP_MINMSSOVERLOAD 1000
+
 /*
  * Default maximum segment size for TCP6.
  * With an IP6 MSS of 1280, this is 1220,
@@ -158,14 +190,18 @@ struct tcphdr {
 #define TCP_MAXHLEN	(0xf<<2)	/* max length of header in bytes */
 #define TCP_MAXOLEN	(TCP_MAXHLEN - sizeof(struct tcphdr))
 					/* max space left for options */
+#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 
 /*
  * User-settable options (used with setsockopt).
  */
-#define	TCP_NODELAY	0x01	/* don't delay send to coalesce packets */
-#define	TCP_MAXSEG	0x02	/* set maximum segment size */
-#define TCP_NOPUSH	0x04	/* don't push last block of write */
-#define TCP_NOOPT	0x08	/* don't use TCP options */
-#define TCP_KEEPALIVE	0x10	/* idle time used when SO_KEEPALIVE is enabled */
+#define	TCP_NODELAY             0x01    /* don't delay send to coalesce packets */
+#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
+#define	TCP_MAXSEG              0x02    /* set maximum segment size */
+#define TCP_NOPUSH              0x04    /* don't push last block of write */
+#define TCP_NOOPT               0x08    /* don't use TCP options */
+#define TCP_KEEPALIVE           0x10    /* idle time used when SO_KEEPALIVE is enabled */
+#define TCP_CONNECTIONTIMEOUT   0x20    /* connection timeout */
+#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 
 #endif