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Annotation of embedaddon/iftop/tcp.h, revision 1.1

1.1     ! misho       1: /* @(#) $Header: /home/pdw/vcvs/repos/iftop/tcp.h,v 1.2 2003/06/06 22:42:35 pdw Exp $ (LBL) */
        !             2: /*
        !             3:  * Copyright (c) 1982, 1986, 1993
        !             4:  *     The Regents of the University of California.  All rights reserved.
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  * 3. All advertising materials mentioning features or use of this software
        !            15:  *    must display the following acknowledgement:
        !            16:  *     This product includes software developed by the University of
        !            17:  *     California, Berkeley and its contributors.
        !            18:  * 4. Neither the name of the University nor the names of its contributors
        !            19:  *    may be used to endorse or promote products derived from this software
        !            20:  *    without specific prior written permission.
        !            21:  *
        !            22:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            23:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            24:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            25:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            26:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            27:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            28:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            29:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            30:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            31:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            32:  * SUCH DAMAGE.
        !            33:  *
        !            34:  *     @(#)tcp.h       8.1 (Berkeley) 6/10/93
        !            35:  */
        !            36: 
        !            37: typedef        u_int32_t       tcp_seq;
        !            38: /*
        !            39:  * TCP header.
        !            40:  * Per RFC 793, September, 1981.
        !            41:  */
        !            42: struct tcphdr {
        !            43:        u_int16_t       th_sport;               /* source port */
        !            44:        u_int16_t       th_dport;               /* destination port */
        !            45:        tcp_seq         th_seq;                 /* sequence number */
        !            46:        tcp_seq         th_ack;                 /* acknowledgement number */
        !            47:        u_int8_t        th_offx2;               /* data offset, rsvd */
        !            48: #define TH_OFF(th)     (((th)->th_offx2 & 0xf0) >> 4)
        !            49:        u_int8_t        th_flags;
        !            50: #define        TH_FIN  0x01
        !            51: #define        TH_SYN  0x02
        !            52: #define        TH_RST  0x04
        !            53: #define        TH_PUSH 0x08
        !            54: #define        TH_ACK  0x10
        !            55: #define        TH_URG  0x20
        !            56: #define TH_ECNECHO     0x40    /* ECN Echo */
        !            57: #define TH_CWR         0x80    /* ECN Cwnd Reduced */
        !            58:        u_int16_t       th_win;                 /* window */
        !            59:        u_int16_t       th_sum;                 /* checksum */
        !            60:        u_int16_t       th_urp;                 /* urgent pointer */
        !            61: };
        !            62: 
        !            63: #define        TCPOPT_EOL              0
        !            64: #define        TCPOPT_NOP              1
        !            65: #define        TCPOPT_MAXSEG           2
        !            66: #define    TCPOLEN_MAXSEG              4
        !            67: #define        TCPOPT_WSCALE           3       /* window scale factor (rfc1323) */
        !            68: #define        TCPOPT_SACKOK           4       /* selective ack ok (rfc2018) */
        !            69: #define        TCPOPT_SACK             5       /* selective ack (rfc2018) */
        !            70: #define        TCPOPT_ECHO             6       /* echo (rfc1072) */
        !            71: #define        TCPOPT_ECHOREPLY        7       /* echo (rfc1072) */
        !            72: #define TCPOPT_TIMESTAMP       8       /* timestamp (rfc1323) */
        !            73: #define    TCPOLEN_TIMESTAMP           10
        !            74: #define    TCPOLEN_TSTAMP_APPA         (TCPOLEN_TIMESTAMP+2) /* appendix A */
        !            75: #define TCPOPT_CC              11      /* T/TCP CC options (rfc1644) */
        !            76: #define TCPOPT_CCNEW           12      /* T/TCP CC options (rfc1644) */
        !            77: #define TCPOPT_CCECHO          13      /* T/TCP CC options (rfc1644) */
        !            78: 
        !            79: #define TCPOPT_TSTAMP_HDR      \
        !            80:     (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)