2008-07-26 17:54:58 -06:00
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/*
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* Layer 2 defines
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*
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* Copyright 2008 by Karsten Keil <kkeil@novell.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/mISDNif.h>
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#include <linux/skbuff.h>
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#include "fsm.h"
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#define MAX_WINDOW 8
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struct manager {
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struct mISDNchannel ch;
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struct mISDNchannel bcast;
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u_long options;
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struct list_head layer2;
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rwlock_t lock;
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struct FsmInst deact;
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struct FsmTimer datimer;
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struct sk_buff_head sendq;
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struct mISDNchannel *up;
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u_int nextid;
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u_int lastid;
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};
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struct teimgr {
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int ri;
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int rcnt;
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struct FsmInst tei_m;
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struct FsmTimer timer;
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int tval, nval;
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struct layer2 *l2;
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struct manager *mgr;
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};
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struct laddr {
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u_char A;
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u_char B;
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};
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struct layer2 {
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struct list_head list;
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struct mISDNchannel ch;
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u_long flag;
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int id;
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struct mISDNchannel *up;
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signed char sapi;
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signed char tei;
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struct laddr addr;
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u_int maxlen;
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struct teimgr *tm;
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u_int vs, va, vr;
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int rc;
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u_int window;
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u_int sow;
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struct FsmInst l2m;
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struct FsmTimer t200, t203;
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int T200, N200, T203;
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u_int next_id;
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u_int down_id;
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struct sk_buff *windowar[MAX_WINDOW];
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struct sk_buff_head i_queue;
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struct sk_buff_head ui_queue;
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struct sk_buff_head down_queue;
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struct sk_buff_head tmp_queue;
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};
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enum {
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ST_L2_1,
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ST_L2_2,
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ST_L2_3,
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ST_L2_4,
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ST_L2_5,
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ST_L2_6,
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ST_L2_7,
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ST_L2_8,
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};
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#define L2_STATE_COUNT (ST_L2_8+1)
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extern struct layer2 *create_l2(struct mISDNchannel *, u_int,
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u_long, u_long);
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extern int tei_l2(struct layer2 *, u_int, u_long arg);
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/* from tei.c */
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extern int l2_tei(struct layer2 *, u_int, u_long arg);
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2008-07-27 10:32:50 -06:00
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extern void TEIrelease(struct layer2 *);
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2008-07-26 17:54:58 -06:00
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extern int TEIInit(u_int *);
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extern void TEIFree(void);
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#define MAX_L2HEADER_LEN 4
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#define RR 0x01
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#define RNR 0x05
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#define REJ 0x09
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#define SABME 0x6f
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#define SABM 0x2f
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#define DM 0x0f
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#define UI 0x03
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#define DISC 0x43
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#define UA 0x63
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#define FRMR 0x87
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#define XID 0xaf
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#define CMD 0
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#define RSP 1
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#define LC_FLUSH_WAIT 1
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#define FLG_LAPB 0
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#define FLG_LAPD 1
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#define FLG_ORIG 2
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#define FLG_MOD128 3
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#define FLG_PEND_REL 4
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#define FLG_L3_INIT 5
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#define FLG_T200_RUN 6
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#define FLG_ACK_PEND 7
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#define FLG_REJEXC 8
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#define FLG_OWN_BUSY 9
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#define FLG_PEER_BUSY 10
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#define FLG_DCHAN_BUSY 11
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#define FLG_L1_ACTIV 12
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#define FLG_ESTAB_PEND 13
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#define FLG_PTP 14
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#define FLG_FIXED_TEI 15
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#define FLG_L2BLOCK 16
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#define FLG_L1_NOTREADY 17
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#define FLG_LAPD_NET 18
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