http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/netinet/tcp.h

/* * 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. * 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 1 #include <features.h> /* * 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_CORK 3 /* Control sending of partial frames */ #define TCP_KEEPIDLE 4 /* Start keeplives after this period */ #define TCP_KEEPINTVL 5 /* Interval between keepalives */ #define TCP_KEEPCNT 6 /* Number of keepalives before death */ #define TCP_SYNCNT 7 /* Number of SYN retransmits */ #define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */ #define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */ #define TCP_WINDOW_CLAMP 10 /* Bound advertised window */ #define TCP_INFO 11 /* Information about this connection. */ #define TCP_QUICKACK 12 /* Bock/reenable quick ACKs. */ #ifdef __USE_MISC # include <sys/types.h> # ifdef __FAVOR_BSD 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) */ u_int8_t th_off:4; /* data offset */ # endif # if __BYTE_ORDER == __BIG_ENDIAN u_int8_t th_off:4; /* data offset */ u_int8_t 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 */ }; # else /* !__FAVOR_BSD */ struct tcphdr { u_int16_t source; u_int16_t dest; u_int32_t seq; u_int32_t ack_seq; # if __BYTE_ORDER == __LITTLE_ENDIAN u_int16_t res1:4; u_int16_t doff:4; u_int16_t fin:1; u_int16_t syn:1; u_int16_t rst:1; u_int16_t psh:1; u_int16_t ack:1; u_int16_t urg:1; u_int16_t res2:2; # elif __BYTE_ORDER == __BIG_ENDIAN u_int16_t doff:4; u_int16_t res1:4; u_int16_t res2:2; u_int16_t urg:1; u_int16_t ack:1; u_int16_t psh:1; u_int16_t rst:1; u_int16_t syn:1; u_int16_t fin:1; # else # error "Adjust your <bits/endian.h> defines" # endif u_int16_t window; u_int16_t check; u_int16_t urg_ptr; }; # endif /* __FAVOR_BSD */ enum { TCP_ESTABLISHED = 1, TCP_SYN_SENT, TCP_SYN_RECV, TCP_FIN_WAIT1, TCP_FIN_WAIT2, TCP_TIME_WAIT, TCP_CLOSE, TCP_CLOSE_WAIT, TCP_LAST_ACK, TCP_LISTEN, TCP_CLOSING /* now a valid state */ }; # 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) /* * 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 */ # define SOL_TCP 6 /* TCP level */ # define TCPI_OPT_TIMESTAMPS 1 # define TCPI_OPT_SACK 2 # define TCPI_OPT_WSCALE 4 # define TCPI_OPT_ECN 8 /* Values for tcpi_state. */ enum tcp_ca_state { TCP_CA_Open = 0, TCP_CA_Disorder = 1, TCP_CA_CWR = 2, TCP_CA_Recovery = 3, TCP_CA_Loss = 4 }; struct tcp_info { u_int8_t tcpi_state; u_int8_t tcpi_ca_state; u_int8_t tcpi_retransmits; u_int8_t tcpi_probes; u_int8_t tcpi_backoff; u_int8_t tcpi_options; u_int8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; u_int32_t tcpi_rto; u_int32_t tcpi_ato; u_int32_t tcpi_snd_mss; u_int32_t tcpi_rcv_mss; u_int32_t tcpi_unacked; u_int32_t tcpi_sacked; u_int32_t tcpi_lost; u_int32_t tcpi_retrans; u_int32_t tcpi_fackets; /* Times. */ u_int32_t tcpi_last_data_sent; u_int32_t tcpi_last_ack_sent; /* Not remembered, sorry. */ u_int32_t tcpi_last_data_recv; u_int32_t tcpi_last_ack_recv; /* Metrics. */ u_int32_t tcpi_pmtu; u_int32_t tcpi_rcv_ssthresh; u_int32_t tcpi_rtt; u_int32_t tcpi_rttvar; u_int32_t tcpi_snd_ssthresh; u_int32_t tcpi_snd_cwnd; u_int32_t tcpi_advmss; u_int32_t tcpi_reordering; }; #endif /* Misc. */ #endif /* netinet/tcp.h */