132 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Layer 2 defines4 *5 * Copyright 2008 by Karsten Keil <kkeil@novell.com>6 */7 8#include <linux/mISDNif.h>9#include <linux/skbuff.h>10#include "fsm.h"11 12#define MAX_WINDOW 813 14struct manager {15 struct mISDNchannel ch;16 struct mISDNchannel bcast;17 u_long options;18 struct list_head layer2;19 rwlock_t lock;20 struct FsmInst deact;21 struct FsmTimer datimer;22 struct sk_buff_head sendq;23 struct mISDNchannel *up;24 u_int nextid;25 u_int lastid;26};27 28struct teimgr {29 int ri;30 int rcnt;31 struct FsmInst tei_m;32 struct FsmTimer timer;33 int tval, nval;34 struct layer2 *l2;35 struct manager *mgr;36};37 38struct laddr {39 u_char A;40 u_char B;41};42 43struct layer2 {44 struct list_head list;45 struct mISDNchannel ch;46 u_long flag;47 int id;48 struct mISDNchannel *up;49 signed char sapi;50 signed char tei;51 struct laddr addr;52 u_int maxlen;53 struct teimgr *tm;54 u_int vs, va, vr;55 int rc;56 u_int window;57 u_int sow;58 struct FsmInst l2m;59 struct FsmTimer t200, t203;60 int T200, N200, T203;61 u_int next_id;62 u_int down_id;63 struct sk_buff *windowar[MAX_WINDOW];64 struct sk_buff_head i_queue;65 struct sk_buff_head ui_queue;66 struct sk_buff_head down_queue;67 struct sk_buff_head tmp_queue;68};69 70enum {71 ST_L2_1,72 ST_L2_2,73 ST_L2_3,74 ST_L2_4,75 ST_L2_5,76 ST_L2_6,77 ST_L2_7,78 ST_L2_8,79};80 81#define L2_STATE_COUNT (ST_L2_8 + 1)82 83extern struct layer2 *create_l2(struct mISDNchannel *, u_int,84 u_long, int, int);85extern int tei_l2(struct layer2 *, u_int, u_long arg);86 87 88/* from tei.c */89extern int l2_tei(struct layer2 *, u_int, u_long arg);90extern void TEIrelease(struct layer2 *);91extern int TEIInit(u_int *);92extern void TEIFree(void);93 94#define MAX_L2HEADER_LEN 495 96#define RR 0x0197#define RNR 0x0598#define REJ 0x0999#define SABME 0x6f100#define SABM 0x2f101#define DM 0x0f102#define UI 0x03103#define DISC 0x43104#define UA 0x63105#define FRMR 0x87106#define XID 0xaf107 108#define CMD 0109#define RSP 1110 111#define LC_FLUSH_WAIT 1112 113#define FLG_LAPB 0114#define FLG_LAPD 1115#define FLG_ORIG 2116#define FLG_MOD128 3117#define FLG_PEND_REL 4118#define FLG_L3_INIT 5119#define FLG_T200_RUN 6120#define FLG_ACK_PEND 7121#define FLG_REJEXC 8122#define FLG_OWN_BUSY 9123#define FLG_PEER_BUSY 10124#define FLG_DCHAN_BUSY 11125#define FLG_L1_ACTIV 12126#define FLG_ESTAB_PEND 13127#define FLG_PTP 14128#define FLG_FIXED_TEI 15129#define FLG_L2BLOCK 16130#define FLG_L1_NOTREADY 17131#define FLG_LAPD_NET 18132