diff options
Diffstat (limited to 'ecos/packages/net/tcpip/current/include/netinet/tcp.h')
| -rw-r--r-- | ecos/packages/net/tcpip/current/include/netinet/tcp.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/ecos/packages/net/tcpip/current/include/netinet/tcp.h b/ecos/packages/net/tcpip/current/include/netinet/tcp.h new file mode 100644 index 0000000..2c65b81 --- /dev/null +++ b/ecos/packages/net/tcpip/current/include/netinet/tcp.h @@ -0,0 +1,155 @@ +//========================================================================== +// +// include/netinet/tcp.h +// +// +// +//========================================================================== +// ####BSDALTCOPYRIGHTBEGIN#### +// ------------------------------------------- +// Portions of this software may have been derived from OpenBSD +// or other sources, and if so are covered by the appropriate copyright +// and license included herein. +// ------------------------------------------- +// ####BSDALTCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): gthomas +// Contributors: gthomas +// Date: 2000-01-10 +// Purpose: +// Description: +// +// +//####DESCRIPTIONEND#### +// +//========================================================================== + + +/* $OpenBSD: tcp.h,v 1.8 1999/07/06 20:17:52 cmetz Exp $ */ +/* $NetBSD: tcp.h,v 1.8 1995/04/17 05:32:58 cgd 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. 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 + */ + +#ifndef _NETINET_TCP_H_ +#define _NETINET_TCP_H_ + +typedef u_int32_t tcp_seq; + +/* + * TCP header. + * Per RFC 793, September, 1981. + */ +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 + u_int8_t th_x2:4, /* (unused) */ + th_off:4; /* data offset */ +#endif +#if BYTE_ORDER == BIG_ENDIAN + 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 + u_int16_t th_win; /* window */ + u_int16_t th_sum; /* checksum */ + u_int16_t th_urp; /* urgent pointer */ +} __attribute__ ((aligned(1), packed)); +#define th_reseqlen th_urp /* TCP data length for + resequencing/reassembly */ + +#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 TCPOLEN_SACK 8 /* 2*sizeof(tcp_seq) */ +#define TCPOPT_TIMESTAMP 8 +#define TCPOLEN_TIMESTAMP 10 +#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ +#define TCPOPT_SIGNATURE 19 +#define TCPOLEN_SIGNATURE 18 + +#define MAX_TCPOPTLEN 40 /* Absolute maximum TCP options len */ + +#define TCPOPT_TSTAMP_HDR \ + (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) + +/* Option definitions */ +#define TCPOPT_SACK_PERMIT_HDR \ +(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK_PERMITTED<<8|TCPOLEN_SACK_PERMITTED) +#define TCPOPT_SACK_HDR (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK<<8) +/* Miscellaneous constants */ +#define MAX_SACK_BLKS 6 /* Max # SACK blocks stored at sender side */ +#define TCP_MAX_SACK 3 /* MAX # SACKs sent in any segment */ + +#define TCP_MAXBURST 4 /* Max # packets after leaving Fast Rxmit */ + +/* + * 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 pkts */ +#define TCP_MAXSEG 0x02 /* set maximum segment size */ +#define TCP_SIGNATURE_ENABLE 0x04 /* enable TCP MD5 signature option */ +#define TCP_SACK_DISABLE 0x300 /* disable SACKs (if enabled by def.) */ + +#endif /* !_NETINET_TCP_H_ */ |