X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/2857c0bdedc139aa35919b6823772862c228c3c1..a8abce5c5e2dce2ba6dbccd5d3829da104b80f9c:/tcp.h

diff --git a/tcp.h b/tcp.h
index 1084db9a..701c23f8 100644
--- a/tcp.h
+++ b/tcp.h
@@ -33,24 +33,23 @@
  *	@(#)tcp.h	8.1 (Berkeley) 6/10/93
  */
 
-typedef	uint32_t	tcp_seq;
 /*
  * TCP header.
  * Per RFC 793, September, 1981.
  */
 struct tcphdr {
-	uint16_t	th_sport;		/* source port */
-	uint16_t	th_dport;		/* destination port */
-	tcp_seq		th_seq;			/* sequence number */
-	tcp_seq		th_ack;			/* acknowledgement number */
-	uint8_t		th_offx2;		/* data offset, rsvd */
-	uint8_t		th_flags;
-	uint16_t	th_win;			/* window */
-	uint16_t	th_sum;			/* checksum */
-	uint16_t	th_urp;			/* urgent pointer */
-} UNALIGNED;
+	nd_uint16_t	th_sport;		/* source port */
+	nd_uint16_t	th_dport;		/* destination port */
+	nd_uint32_t	th_seq;			/* sequence number */
+	nd_uint32_t	th_ack;			/* acknowledgement number */
+	nd_uint8_t	th_offx2;		/* data offset, rsvd */
+	nd_uint8_t	th_flags;
+	nd_uint16_t	th_win;			/* window */
+	nd_uint16_t	th_sum;			/* checksum */
+	nd_uint16_t	th_urp;			/* urgent pointer */
+};
 
-#define TH_OFF(th)	(((th)->th_offx2 & 0xf0) >> 4)
+#define TH_OFF(th)	((EXTRACT_U_1((th)->th_offx2) & 0xf0) >> 4)
 
 /* TCP flags */
 #define	TH_FIN     0x01
@@ -84,7 +83,7 @@ struct tcphdr {
 #define TCPOPT_SCPS		20	/* SCPS-TP (CCSDS 714.0-B-2) */
 #define	TCPOPT_UTO		28	/* tcp user timeout (rfc5482) */
 #define	   TCPOLEN_UTO			4
-#define TCPOPT_AUTH		29	/* Enhanced AUTH option (rfc5925) */
+#define TCPOPT_TCPAO		29	/* TCP authentication option (rfc5925) */
 #define	TCPOPT_MPTCP		30	/* MPTCP options */
 #define TCPOPT_FASTOPEN		34	/* TCP Fast Open (rfc7413) */
 #define TCPOPT_EXPERIMENT2	254	/* experimental headers (rfc4727) */
@@ -104,6 +103,9 @@ struct tcphdr {
 #ifndef SMTP_PORT
 #define SMTP_PORT		25
 #endif
+#ifndef WHOIS_PORT
+#define WHOIS_PORT		43
+#endif
 #ifndef NAMESERVER_PORT
 #define NAMESERVER_PORT		53
 #endif