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Annotation of Net2/netccitt/hd_var.h, revision 1.1.1.2

1.1       root        1: /*
                      2:  * Copyright (c) University of British Columbia, 1984
                      3:  * Copyright (c) 1990 The Regents of the University of California.
                      4:  * All rights reserved.
                      5:  *
                      6:  * This code is derived from software contributed to Berkeley by
                      7:  * the Laboratory for Computation Vision and the Computer Science Department
                      8:  * of the University of British Columbia.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed by the University of
                     21:  *     California, Berkeley and its contributors.
                     22:  * 4. Neither the name of the University nor the names of its contributors
                     23:  *    may be used to endorse or promote products derived from this software
                     24:  *    without specific prior written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     36:  * SUCH DAMAGE.
                     37:  *
1.1.1.2 ! root       38:  *     from: @(#)hd_var.h      7.4 (Berkeley) 5/29/91
        !            39:  *     hd_var.h,v 1.3 1993/05/20 04:12:10 cgd Exp
1.1       root       40:  */
                     41: 
1.1.1.2 ! root       42: #ifndef _NETCCITT_HD_VAR_H_
        !            43: #define _NETCCITT_HD_VAR_H_
        !            44: 
1.1       root       45: /*
                     46:  *
                     47:  * hdlc control block
                     48:  *
                     49:  */
                     50: 
                     51: struct hdtxq {
                     52:        struct  mbuf *head;
                     53:        struct  mbuf *tail;
                     54: };
                     55: 
                     56: struct hdcb {
                     57:        struct  hdcb *hd_next;  /* pointer to next hdlc control block */
                     58:        char    hd_state;       /* link state */
                     59:        char    hd_vs;          /* send state variable */
                     60:        char    hd_vr;          /* receive state variable */
                     61:        char    hd_lastrxnr;    /* last received N(R) */
                     62:        char    hd_lasttxnr;    /* last transmitted N(R) */
                     63:        char    hd_condition;
                     64: #define TIMER_RECOVERY_CONDITION        0x01
                     65: #define REJ_CONDITION                   0x02
                     66: #define REMOTE_RNR_CONDITION            0X04
                     67:        char    hd_retxcnt;
                     68:        char    hd_xx;
                     69:        struct  hdtxq hd_txq;
                     70:        struct  mbuf *hd_retxq[MODULUS];
                     71:        char    hd_retxqi;
                     72:        char    hd_rrtimer;
                     73:        char    hd_timer;
                     74: #define SET_TIMER(hdp)         hdp->hd_timer = hd_t1
                     75: #define KILL_TIMER(hdp)                hdp->hd_timer = 0
                     76:        char    hd_dontcopy;    /* if-driver doesn't free I-frames */
                     77:        struct  ifnet *hd_ifp;  /* device's network visible interface */
                     78:        struct  ifaddr *hd_ifa; /* device's X.25 network address */
                     79:        struct  x25config *hd_xcp;
                     80:        caddr_t hd_pkp;         /* Level III junk */
                     81:        int     (*hd_output)(); /* separate entry for HDLC direct output */
                     82: 
                     83:        /* link statistics */
                     84: 
                     85:        long    hd_iframes_in;
                     86:        long    hd_iframes_out;
                     87:        long    hd_rrs_in;
                     88:        long    hd_rrs_out;
                     89:        short   hd_rejs_in;
                     90:        short   hd_rejs_out;
                     91:        long    hd_window_condition;
                     92:        short   hd_invalid_ns;
                     93:        short   hd_invalid_nr;
                     94:        short   hd_timeouts;
                     95:        short   hd_resets;
                     96:        short   hd_unknown;
                     97:        short   hd_frmrs_in;
                     98:        short   hd_frmrs_out;
                     99:        short   hd_rnrs_in;
                    100:        short   hd_rnrs_out;
                    101: };
                    102: 
                    103: #ifdef KERNEL
                    104: struct hdcb *hdcbhead;         /* head of linked list of hdcb's */
                    105: struct Frmr_frame hd_frmr;     /* rejected frame diagnostic info */
                    106: struct ifqueue hdintrq;        /* hdlc packet input queue */
                    107: 
                    108: int    hd_t1;                  /* timer T1 value */
                    109: int    hd_t3;                  /* RR send timer */
                    110: int    hd_n2;                  /* frame retransmission limit */
                    111: #endif
1.1.1.2 ! root      112: 
        !           113: #endif /* !_NETCCITT_HD_VAR_H_ */

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