X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/fb75d3cd5ad603bd255d9cdc20aeca674c6f3720..c519841be2fe87b3cdd9dc45fa7eb8b4266d40a5:/tcp.h?ds=sidebyside

diff --git a/tcp.h b/tcp.h
index 7b2b24e3..43587ec4 100644
--- a/tcp.h
+++ b/tcp.h
@@ -1,4 +1,4 @@
-/* @(#) $Header: /tcpdump/master/tcpdump/tcp.h,v 1.5 2000-10-03 02:55:02 itojun Exp $ (LBL) */
+/* @(#) $Header: /tcpdump/master/tcpdump/tcp.h,v 1.10 2002-12-11 07:14:11 guy Exp $ (LBL) */
 /*
  * Copyright (c) 1982, 1986, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -34,29 +34,6 @@
  *	@(#)tcp.h	8.1 (Berkeley) 6/10/93
  */
 
-#ifndef BYTE_ORDER
-#define	LITTLE_ENDIAN	1234	/* least-significant byte first (vax, pc) */
-#define	BIG_ENDIAN	4321	/* most-significant byte first (IBM, net) */
-#define	PDP_ENDIAN	3412	/* LSB first in word, MSW first in long (pdp)*/
-
-#ifdef WORDS_BIGENDIAN
-#define BYTE_ORDER	BIG_ENDIAN
-#else
-#define BYTE_ORDER	LITTLE_ENDIAN
-#endif /* WORDS_BIGENDIAN */
-#endif /* BYTE_ORDER */
-
-#if !defined(BYTE_ORDER) || \
-    (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN && \
-    BYTE_ORDER != PDP_ENDIAN)
-	/* you must determine what the correct bit order is for
-	 * your compiler - the next line is an intentional error
-	 * which will force your compiles to bomb until you fix
-	 * the above macros.
-	 */
-  #error "Undefined or invalid BYTE_ORDER";
-#endif
-
 typedef	u_int32_t	tcp_seq;
 /*
  * TCP header.
@@ -67,8 +44,8 @@ struct tcphdr {
 	u_int16_t	th_dport;		/* destination port */
 	tcp_seq		th_seq;			/* sequence number */
 	tcp_seq		th_ack;			/* acknowledgement number */
-	u_int8_t	th_x2off;
-#define TH_OFF(th)	((th)->th_x2off & 0x0f)	/* data offset, th_off */
+	u_int8_t	th_offx2;		/* data offset, rsvd */
+#define TH_OFF(th)	(((th)->th_offx2 & 0xf0) >> 4)
 	u_int8_t	th_flags;
 #define	TH_FIN	0x01
 #define	TH_SYN	0x02
@@ -76,6 +53,8 @@ struct tcphdr {
 #define	TH_PUSH	0x08
 #define	TH_ACK	0x10
 #define	TH_URG	0x20
+#define TH_ECNECHO	0x40	/* ECN Echo */
+#define TH_CWR		0x80	/* ECN Cwnd Reduced */
 	u_int16_t	th_win;			/* window */
 	u_int16_t	th_sum;			/* checksum */
 	u_int16_t	th_urp;			/* urgent pointer */
@@ -85,14 +64,17 @@ struct tcphdr {
 #define	TCPOPT_NOP		1
 #define	TCPOPT_MAXSEG		2
 #define    TCPOLEN_MAXSEG		4
-#define TCPOPT_WINDOW		3
-#define    TCPOLEN_WINDOW		3
-#define TCPOPT_SACK_PERMITTED	4		/* Experimental */
-#define    TCPOLEN_SACK_PERMITTED	2
-#define TCPOPT_SACK		5		/* Experimental */
-#define TCPOPT_TIMESTAMP	8
+#define	TCPOPT_WSCALE		3	/* window scale factor (rfc1323) */
+#define	TCPOPT_SACKOK		4	/* selective ack ok (rfc2018) */
+#define	TCPOPT_SACK		5	/* selective ack (rfc2018) */
+#define	TCPOPT_ECHO		6	/* echo (rfc1072) */
+#define	TCPOPT_ECHOREPLY	7	/* echo (rfc1072) */
+#define TCPOPT_TIMESTAMP	8	/* timestamp (rfc1323) */
 #define    TCPOLEN_TIMESTAMP		10
 #define    TCPOLEN_TSTAMP_APPA		(TCPOLEN_TIMESTAMP+2) /* appendix A */
+#define TCPOPT_CC		11	/* T/TCP CC options (rfc1644) */
+#define TCPOPT_CCNEW		12	/* T/TCP CC options (rfc1644) */
+#define TCPOPT_CCECHO		13	/* T/TCP CC options (rfc1644) */
 
 #define TCPOPT_TSTAMP_HDR	\
     (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)