reorganization to move ufsmount ops to be vnode ops;

[unix-history] / usr / src / sys / netinet / tcp.h

diff --git a/usr/src/sys/netinet/tcp.h b/usr/src/sys/netinet/tcp.h
index 90ae428..eae3c64 100644 (file)
--- a/usr/src/sys/netinet/tcp.h
+++ b/usr/src/sys/netinet/tcp.h
@@ -1,5 +1,28 @@
-/* tcp.h 1.17 81/11/18 */
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ *     @(#)tcp.h       7.7 (Berkeley) %G%
+ */
+#ifndef BYTE_ORDER
+/*
+ * Definitions for byte order,
+ * according to byte significance from low address to high.
+ */
+#define        LITTLE_ENDIAN   1234    /* least-significant byte first (vax) */
+#define        BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
+#define        PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp) */

 
 

+#ifdef vax
+#define        BYTE_ORDER      LITTLE_ENDIAN
+#else
+#define        BYTE_ORDER      BIG_ENDIAN      /* mc68000, tahoe, most others */
+#endif
+#endif BYTE_ORDER
+
+typedef        u_long  tcp_seq;

 /*
  * TCP header.
  * Per RFC 793, September, 1981.
 /*
  * TCP header.
  * Per RFC 793, September, 1981.


@@ -7,19 +30,44 @@
 struct tcphdr {
        u_short th_sport;               /* source port */
        u_short th_dport;               /* destination port */
 struct tcphdr {
        u_short th_sport;               /* source port */
        u_short th_dport;               /* destination port */

-       seq_t   th_seq;                 /* sequence number */
-       seq_t   th_ackno;               /* acknowledgement number */
-       u_char
-               th_x2:4,                /* (unused) */
+       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 */
                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;
        u_char  th_flags;

-#define        TH_FIN  001
-#define        TH_SYN  002
-#define        TH_RST  004
-#define        TH_EOL  010
-#define        TH_ACK  020
-#define        TH_URG  040
+#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 */
 };
        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
+
+/*
+ * 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 window */
+
+/*
+ * 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 */