diff options
Diffstat (limited to 'sys/netccitt/hd_var.h')
| -rw-r--r-- | sys/netccitt/hd_var.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/sys/netccitt/hd_var.h b/sys/netccitt/hd_var.h new file mode 100644 index 0000000..5fefe08 --- /dev/null +++ b/sys/netccitt/hd_var.h @@ -0,0 +1,107 @@ +/* + * Copyright (c) University of British Columbia, 1984 + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * the Laboratory for Computation Vision and the Computer Science Department + * of the University of British Columbia. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + * + * @(#)hd_var.h 8.1 (Berkeley) 6/10/93 + */ + +/* + * + * hdlc control block + * + */ + +struct hdtxq { + struct mbuf *head; + struct mbuf *tail; +}; + +struct hdcb { + struct hdcb *hd_next; /* pointer to next hdlc control block */ + char hd_state; /* link state */ + char hd_vs; /* send state variable */ + char hd_vr; /* receive state variable */ + char hd_lastrxnr; /* last received N(R) */ + char hd_lasttxnr; /* last transmitted N(R) */ + char hd_condition; +#define TIMER_RECOVERY_CONDITION 0x01 +#define REJ_CONDITION 0x02 +#define REMOTE_RNR_CONDITION 0X04 + char hd_retxcnt; + char hd_xx; + struct hdtxq hd_txq; + struct mbuf *hd_retxq[MODULUS]; + char hd_retxqi; + char hd_rrtimer; + char hd_timer; +#define SET_TIMER(hdp) hdp->hd_timer = hd_t1 +#define KILL_TIMER(hdp) hdp->hd_timer = 0 + char hd_dontcopy; /* if-driver doesn't free I-frames */ + struct ifnet *hd_ifp; /* device's network visible interface */ + struct ifaddr *hd_ifa; /* device's X.25 network address */ + struct x25config *hd_xcp; + caddr_t hd_pkp; /* Level III junk */ + int (*hd_output)(); /* separate entry for HDLC direct output */ + + /* link statistics */ + + long hd_iframes_in; + long hd_iframes_out; + long hd_rrs_in; + long hd_rrs_out; + short hd_rejs_in; + short hd_rejs_out; + long hd_window_condition; + short hd_invalid_ns; + short hd_invalid_nr; + short hd_timeouts; + short hd_resets; + short hd_unknown; + short hd_frmrs_in; + short hd_frmrs_out; + short hd_rnrs_in; + short hd_rnrs_out; +}; + +#ifdef KERNEL +struct hdcb *hdcbhead; /* head of linked list of hdcb's */ +struct Frmr_frame hd_frmr; /* rejected frame diagnostic info */ +struct ifqueue hdintrq; /* hdlc packet input queue */ + +int hd_t1; /* timer T1 value */ +int hd_t3; /* RR send timer */ +int hd_n2; /* frame retransmission limit */ +#endif |
