diff options
Diffstat (limited to 'usr/src/uts/common/netinet/tcp.h')
| -rw-r--r-- | usr/src/uts/common/netinet/tcp.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/usr/src/uts/common/netinet/tcp.h b/usr/src/uts/common/netinet/tcp.h new file mode 100644 index 0000000000..046015d7c9 --- /dev/null +++ b/usr/src/uts/common/netinet/tcp.h @@ -0,0 +1,110 @@ +/* + * Copyright 2005 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* + * 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 + +#pragma ident "%Z%%M% %I% %E% SMI" +/* 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 + +/* gap for expansion of ``standard'' options */ +#define TCP_ANONPRIVBIND 0x20 /* for internal use only */ +#define TCP_EXCLBIND 0x21 /* for internal use only */ + +#ifdef __cplusplus +} +#endif + +#endif /* _NETINET_TCP_H */ |