New file, incorporated from 4.4BSD-Lite.

diff --git a/inet/netinet/tcp.h b/inet/netinet/tcp.h
new file mode 100644 (file)
index 0000000..6b77ff6
--- /dev/null
+++ b/inet/netinet/tcp.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 1982, 1986, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)tcp.h       8.1 (Berkeley) 6/10/93
+ */
+
+typedef        u_long  tcp_seq;
+/*
+ * TCP header.
+ * Per RFC 793, September, 1981.
+ */
+struct tcphdr {
+       u_short th_sport;               /* source port */
+       u_short th_dport;               /* destination port */
+       tcp_seq th_seq;                 /* sequence number */
+       tcp_seq th_ack;                 /* acknowledgement number */
+#if BYTE_ORDER == LITTLE_ENDIAN 
+       u_char  th_x2:4,                /* (unused) */
+               th_off:4;               /* data offset */
+#endif
+#if BYTE_ORDER == BIG_ENDIAN 
+       u_char  th_off:4,               /* data offset */
+               th_x2:4;                /* (unused) */
+#endif
+       u_char  th_flags;
+#define        TH_FIN  0x01
+#define        TH_SYN  0x02
+#define        TH_RST  0x04
+#define        TH_PUSH 0x08
+#define        TH_ACK  0x10
+#define        TH_URG  0x20
+       u_short th_win;                 /* window */
+       u_short th_sum;                 /* checksum */
+       u_short th_urp;                 /* urgent pointer */
+};
+
+#define        TCPOPT_EOL              0
+#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    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)
+
+/*
+ * Default maximum segment size for TCP.
+ * With an IP MSS of 576, this is 536,
+ * but 512 is probably more convenient.
+ * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)).
+ */
+#define        TCP_MSS 512
+
+#define        TCP_MAXWIN      65535   /* largest value for (unscaled) window */
+
+#define TCP_MAX_WINSHIFT       14      /* maximum window shift */
+
+/*
+ * 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 */