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| -rw-r--r-- | StdLib/Include/netinet/tcp.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/StdLib/Include/netinet/tcp.h b/StdLib/Include/netinet/tcp.h new file mode 100644 index 0000000000..8bb8f61ec9 --- /dev/null +++ b/StdLib/Include/netinet/tcp.h @@ -0,0 +1,132 @@ +/* $NetBSD: tcp.h,v 1.28 2007/12/25 18:33:47 perry Exp $ */
+
+/*
+ * 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. 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
+ */
+
+#ifndef _NETINET_TCP_H_
+#define _NETINET_TCP_H_
+
+#include <sys/featuretest.h>
+
+#if defined(_NETBSD_SOURCE)
+
+typedef u_int32_t tcp_seq;
+/*
+ * TCP header.
+ * Per RFC 793, September, 1981.
+ * Updated by RFC 3168, September, 2001.
+ */
+struct tcphdr {
+ u_int16_t th_sport; /* source port */
+ u_int16_t th_dport; /* destination port */
+ tcp_seq th_seq; /* sequence number */
+ tcp_seq th_ack; /* acknowledgement number */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ /*LINTED non-portable bitfields*/
+ u_int8_t th_x2:4, /* (unused) */
+ th_off:4; /* data offset */
+#endif
+#if BYTE_ORDER == BIG_ENDIAN
+ /*LINTED non-portable bitfields*/
+ u_int8_t th_off:4, /* data offset */
+ th_x2:4; /* (unused) */
+#endif
+ u_int8_t 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
+#define TH_ECE 0x40
+#define TH_CWR 0x80
+ u_int16_t th_win; /* window */
+ u_int16_t th_sum; /* checksum */
+ u_int16_t th_urp; /* urgent pointer */
+} __packed;
+
+#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)
+
+#define TCPOPT_SIGNATURE 19 /* Keyed MD5: RFC 2385 */
+#define TCPOLEN_SIGNATURE 18
+#define TCPOLEN_SIGLEN (TCPOLEN_SIGNATURE+2) /* padding */
+
+#define MAX_TCPOPTLEN 40 /* max # bytes that go in options */
+
+/*
+ * Default maximum segment size for TCP.
+ * This is defined by RFC 1112 Sec 4.2.2.6.
+ */
+#define TCP_MSS 536
+
+#define TCP_MINMSS 216
+
+#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */
+
+#define TCP_MAX_WINSHIFT 14 /* maximum window shift */
+
+#define TCP_MAXBURST 4 /* maximum segments in a burst */
+
+#endif /* _NETBSD_SOURCE */
+
+/*
+ * User-settable options (used with setsockopt).
+ */
+#define TCP_NODELAY 1 /* don't delay send to coalesce packets */
+#define TCP_MAXSEG 2 /* set maximum segment size */
+#define TCP_KEEPIDLE 3
+#ifdef notyet
+#define TCP_NOPUSH 4 /* reserved for FreeBSD compat */
+#endif
+#define TCP_KEEPINTVL 5
+#define TCP_KEEPCNT 6
+#define TCP_KEEPINIT 7
+#ifdef notyet
+#define TCP_NOOPT 8 /* reserved for FreeBSD compat */
+#endif
+#define TCP_MD5SIG 0x10 /* use MD5 digests (RFC2385) */
+#define TCP_CONGCTL 0x20 /* selected congestion control */
+
+#endif /* !_NETINET_TCP_H_ */
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