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