projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| fa58c82e KS |
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 | * %sccs.include.redist.c% | |
| 11 | * | |
| b84e7ca8 | 12 | * @(#)hd_var.h 7.3 (Berkeley) %G% |
| fa58c82e | 13 | */ |
| 82237f5b KS |
14 | |
| 15 | /* | |
| 16 | * | |
| 17 | * hdlc control block | |
| 18 | * | |
| 19 | */ | |
| 20 | ||
| 21 | struct hdtxq { | |
| 22 | struct mbuf *head; | |
| 23 | struct mbuf *tail; | |
| 24 | }; | |
| 25 | ||
| 26 | struct hdcb { | |
| 27 | struct hdcb *hd_next; /* pointer to next hdlc control block */ | |
| 28 | char hd_state; /* link state */ | |
| 29 | char hd_vs; /* send state variable */ | |
| 30 | char hd_vr; /* receive state variable */ | |
| 31 | char hd_lastrxnr; /* last received N(R) */ | |
| 32 | char hd_lasttxnr; /* last transmitted N(R) */ | |
| 33 | char hd_condition; | |
| 34 | #define TIMER_RECOVERY_CONDITION 0x01 | |
| 35 | #define REJ_CONDITION 0x02 | |
| 36 | #define REMOTE_RNR_CONDITION 0X04 | |
| 37 | char hd_retxcnt; | |
| 38 | char hd_xx; | |
| 39 | struct hdtxq hd_txq; | |
| 40 | struct mbuf *hd_retxq[MODULUS]; | |
| 41 | char hd_retxqi; | |
| 42 | char hd_rrtimer; | |
| 43 | char hd_timer; | |
| 44 | #define SET_TIMER(hdp) hdp->hd_timer = hd_t1 | |
| 45 | #define KILL_TIMER(hdp) hdp->hd_timer = 0 | |
| 46 | char hd_dontcopy; /* if-driver doesn't free I-frames */ | |
| 47 | struct ifnet *hd_ifp; /* device's network visible interface */ | |
| b84e7ca8 KS |
48 | struct ifaddr *hd_ifa; /* device's X.25 network address */ |
| 49 | int (*hd_output)(); /* separate entry for HDLC direct output */ | |
| 82237f5b KS |
50 | struct x25config *hd_xcp; /* copy of &hdp->hd_if->if_addr */ |
| 51 | ||
| 52 | /* link statistics */ | |
| 53 | ||
| 54 | long hd_iframes_in; | |
| 55 | long hd_iframes_out; | |
| 56 | long hd_rrs_in; | |
| 57 | long hd_rrs_out; | |
| 58 | short hd_rejs_in; | |
| 59 | short hd_rejs_out; | |
| 60 | long hd_window_condition; | |
| 61 | short hd_invalid_ns; | |
| 62 | short hd_invalid_nr; | |
| 63 | short hd_timeouts; | |
| 64 | short hd_resets; | |
| 65 | short hd_unknown; | |
| 66 | short hd_frmrs_in; | |
| 67 | short hd_frmrs_out; | |
| 68 | short hd_rnrs_in; | |
| 69 | short hd_rnrs_out; | |
| 70 | }; | |
| 71 | ||
| 72 | #ifdef KERNEL | |
| 73 | struct hdcb *hdcbhead; /* head of linked list of hdcb's */ | |
| 74 | struct Frmr_frame hd_frmr; /* rejected frame diagnostic info */ | |
| 75 | struct ifqueue hdintrq; /* hdlc packet input queue */ | |
| 76 | ||
| 77 | int hd_t1; /* timer T1 value */ | |
| 78 | int hd_t3; /* RR send timer */ | |
| 79 | int hd_n2; /* frame retransmission limit */ | |
| 80 | #endif |