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-rw-r--r--sys/netinet/tcp.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/netinet/tcp.h b/sys/netinet/tcp.h
index fc9ae26..03b8e53 100644
--- a/sys/netinet/tcp.h
+++ b/sys/netinet/tcp.h
@@ -31,9 +31,12 @@
* SUCH DAMAGE.
*
* @(#)tcp.h 8.1 (Berkeley) 6/10/93
- * $Id$
+ * $Id: tcp.h,v 1.2 1994/08/02 07:48:52 davidg Exp $
*/
+#ifndef _NETINET_TCP_H_
+#define _NETINET_TCP_H_
+
typedef u_long tcp_seq;
/*
* TCP header.
@@ -97,3 +100,5 @@ struct tcphdr {
*/
#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
#define TCP_MAXSEG 0x02 /* set maximum segment size */
+
+#endif
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