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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
/* tcp.h 1.11 88/08/19 SMI; from UCB 7.2 10/28/86 */
#include <sys/isa_defs.h>
#include <sys/inttypes.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef uint32_t tcp_seq;
/*
* TCP header.
* Per RFC 793, September, 1981.
*/
struct tcphdr {
uint16_t th_sport; /* source port */
uint16_t th_dport; /* destination port */
tcp_seq th_seq; /* sequence number */
tcp_seq th_ack; /* acknowledgement number */
#ifdef _BIT_FIELDS_LTOH
uint_t th_x2:4, /* (unused) */
th_off:4; /* data offset */
#else
uint_t th_off:4, /* data offset */
th_x2:4; /* (unused) */
#endif
uchar_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
uint16_t th_win; /* window */
uint16_t th_sum; /* checksum */
uint16_t th_urp; /* urgent pointer */
};
#define TCPOPT_EOL 0
#define TCPOPT_NOP 1
#define TCPOPT_MAXSEG 2
#define TCPOPT_WSCALE 3
#define TCPOPT_SACK_PERMITTED 4
#define TCPOPT_SACK 5
#define TCPOPT_TSTAMP 8
/*
* Default maximum segment size for TCP.
* With an IP MTU of 576, this is 536.
*/
#define TCP_MSS 536
/*
* Options for use with [gs]etsockopt at the TCP level.
*
* Note: Some of the TCP_ namespace has conflict with and
* and is exposed through <xti.h>. (It also requires exposing
* options not implemented). The options with potential
* for conflicts use #ifndef guards.
*/
#ifndef TCP_NODELAY
#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
#endif
#ifndef TCP_MAXSEG
#define TCP_MAXSEG 0x02 /* set maximum segment size */
#endif
#ifndef TCP_KEEPALIVE
#define TCP_KEEPALIVE 0x8 /* set keepalive timer */
#endif
#define TCP_NOTIFY_THRESHOLD 0x10
#define TCP_ABORT_THRESHOLD 0x11
#define TCP_CONN_NOTIFY_THRESHOLD 0x12
#define TCP_CONN_ABORT_THRESHOLD 0x13
#define TCP_RECVDSTADDR 0x14
#define TCP_INIT_CWND 0x15
#define TCP_KEEPALIVE_THRESHOLD 0x16
#define TCP_KEEPALIVE_ABORT_THRESHOLD 0x17
#define TCP_CORK 0x18
#define TCP_RTO_INITIAL 0x19
#define TCP_RTO_MIN 0x1A
#define TCP_RTO_MAX 0x1B
#define TCP_LINGER2 0x1C
/* gap for expansion of ``standard'' options */
#define TCP_ANONPRIVBIND 0x20 /* for internal use only */
#define TCP_EXCLBIND 0x21 /* for internal use only */
#define TCP_KEEPIDLE 0x22
#define TCP_KEEPCNT 0x23
#define TCP_KEEPINTVL 0x24
#define TCP_CONGESTION 0x25
#ifdef __cplusplus
}
#endif
#endif /* _NETINET_TCP_H */
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