| 0,0 → 1,138 |
|---|
| /*!\file netinet/tcp.h |
| * TCP header and options. |
| */ |
| |
| /* $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_long tcp_seq; |
| typedef u_long tcp_cc; /* connection count per rfc1644 */ |
| |
| #include <sys/packon.h> |
| |
| |
| /* |
| * 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 */ |
| u_char th_x2:4; /* (unused) */ |
| u_char th_off:4; /* data offset */ |
| 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 |
| #define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG) |
| |
| u_short th_win; /* window */ |
| u_short th_sum; /* checksum */ |
| u_short th_urp; /* urgent pointer */ |
| }; |
| |
| #include <sys/packoff.h> |
| |
| #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 |
| #define TCPOLEN_SACK_PERMITTED 2 |
| #define TCPOPT_SACK 5 |
| #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_CC 11 /* CC options: RFC-1644 */ |
| #define TCPOPT_CCNEW 12 |
| #define TCPOPT_CCECHO 13 |
| #define TCPOLEN_CC 6 |
| #define TCPOLEN_CC_APPA (TCPOLEN_CC+2) |
| #define TCPOPT_CC_HDR(ccopt) \ |
| (TCPOPT_NOP<<24|TCPOPT_NOP<<16|(ccopt)<<8|TCPOLEN_CC) |
| |
| #define TCPOPT_SIGNATURE 19 |
| #define TCP_SIGLEN 16 |
| |
| /* |
| * 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 TTCP_CLIENT_SND_WND 4096 /* dflt send window for T/TCP client */ |
| |
| #define TCP_MAX_WINSHIFT 14 /* maximum window shift */ |
| |
| #define TCP_MAXHLEN (0xf<<2) /* max length of header in bytes */ |
| #define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr)) |
| /* max space left for options */ |
| |
| /* |
| * 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 */ |
| #ifdef TCP_AUTO |
| #define TCP_AUTO_OP 0x03 /* 0 to disable autotuning, 1 to reenable */ |
| #endif |
| #define TCP_NOPUSH 0x04 /* don't push last block of write */ |
| #define TCP_NOOPT 0x08 /* don't use TCP options */ |
| |
| /* For PSC modifications */ |
| #if defined(TCP_AUTO) || defined(TCP_SACK) || defined(TCP_FACK) |
| #define PSC_VERSION "0.8" |
| #endif |
| |
| #endif |