xnu-792.24.17.tar.gz

[apple/xnu.git] / bsd / netinet / tcp.h

diff --git a/bsd/netinet/tcp.h b/bsd/netinet/tcp.h
index fa844ec01e47737c1be26146bee662de508aaea0..e6b102fda9b53aeb71f48b728c19167ab1320222 100644 (file)
--- a/bsd/netinet/tcp.h
+++ b/bsd/netinet/tcp.h
@@ -3,20 +3,19 @@
  *
  * @APPLE_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.
+ * 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.
  * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -105,18 +104,21 @@ struct tcphdr {
 #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
@@ -124,6 +126,17 @@ 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.
@@ -178,10 +191,11 @@ struct tcphdr {
  */
 #define        TCP_NODELAY     0x01    /* don't delay send to coalesce packets */
 #ifndef _POSIX_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_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 */
+
 #endif /* _POSIX_C_SOURCE */
 
 #endif