[deliverable/linux.git] / drivers / isdn / mISDN / layer2.h

/*
 * 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
Commit	Line	Data
1b2b03f8 KK	1	/*
	2	* Layer 2 defines
	3	*
	4	* Copyright 2008 by Karsten Keil <kkeil@novell.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	*/
	16
	17	#include <linux/mISDNif.h>
	18	#include <linux/skbuff.h>
	19	#include "fsm.h"
	20
	21	#define MAX_WINDOW 8
	22
	23	struct manager {
	24	struct mISDNchannel ch;
	25	struct mISDNchannel bcast;
	26	u_long options;
	27	struct list_head layer2;
	28	rwlock_t lock;
	29	struct FsmInst deact;
	30	struct FsmTimer datimer;
	31	struct sk_buff_head sendq;
	32	struct mISDNchannel *up;
	33	u_int nextid;
	34	u_int lastid;
	35	};
	36
	37	struct teimgr {
	38	int ri;
	39	int rcnt;
	40	struct FsmInst tei_m;
	41	struct FsmTimer timer;
	42	int tval, nval;
	43	struct layer2 *l2;
	44	struct manager *mgr;
	45	};
	46
	47	struct laddr {
	48	u_char A;
	49	u_char B;
	50	};
	51
	52	struct layer2 {
	53	struct list_head list;
	54	struct mISDNchannel ch;
	55	u_long flag;
	56	int id;
	57	struct mISDNchannel *up;
	58	signed char sapi;
	59	signed char tei;
	60	struct laddr addr;
	61	u_int maxlen;
	62	struct teimgr *tm;
	63	u_int vs, va, vr;
	64	int rc;
65	u_int window;
66	u_int sow;
67	struct FsmInst l2m;
68	struct FsmTimer t200, t203;
69	int T200, N200, T203;
70	u_int next_id;
71	u_int down_id;
72	struct sk_buff *windowar[MAX_WINDOW];
73	struct sk_buff_head i_queue;
74	struct sk_buff_head ui_queue;
75	struct sk_buff_head down_queue;
76	struct sk_buff_head tmp_queue;
77	};
78
79	enum {
80	ST_L2_1,
81	ST_L2_2,
82	ST_L2_3,
83	ST_L2_4,
84	ST_L2_5,
85	ST_L2_6,
86	ST_L2_7,
87	ST_L2_8,
88	};
89
475be4d8	90	#define L2_STATE_COUNT (ST_L2_8 + 1)
1b2b03f8 KK	91
1b2b03f8 KK	92	extern struct layer2 create_l2(struct mISDNchannel , u_int,
475be4d8	93	u_long, int, int);
1b2b03f8 KK	94	extern int tei_l2(struct layer2 *, u_int, u_long arg);
	95
	96
	97	/* from tei.c */
475be4d8 JP	98	extern int l2_tei(struct layer2 *, u_int, u_long arg);
	99	extern void TEIrelease(struct layer2 *);
	100	extern int TEIInit(u_int *);
	101	extern void TEIFree(void);
1b2b03f8 KK	102
	103	#define MAX_L2HEADER_LEN 4
	104
	105	#define RR 0x01
	106	#define RNR 0x05
	107	#define REJ 0x09
	108	#define SABME 0x6f
	109	#define SABM 0x2f
	110	#define DM 0x0f
	111	#define UI 0x03
	112	#define DISC 0x43
	113	#define UA 0x63
	114	#define FRMR 0x87
	115	#define XID 0xaf
	116
	117	#define CMD 0
	118	#define RSP 1
	119
	120	#define LC_FLUSH_WAIT 1
	121
	122	#define FLG_LAPB 0
	123	#define FLG_LAPD 1
	124	#define FLG_ORIG 2
	125	#define FLG_MOD128 3
	126	#define FLG_PEND_REL 4
	127	#define FLG_L3_INIT 5
	128	#define FLG_T200_RUN 6
	129	#define FLG_ACK_PEND 7
	130	#define FLG_REJEXC 8
	131	#define FLG_OWN_BUSY 9
	132	#define FLG_PEER_BUSY 10
	133	#define FLG_DCHAN_BUSY 11
	134	#define FLG_L1_ACTIV 12
	135	#define FLG_ESTAB_PEND 13
	136	#define FLG_PTP 14
	137	#define FLG_FIXED_TEI 15
	138	#define FLG_L2BLOCK 16
	139	#define FLG_L1_NOTREADY 17
	140	#define FLG_LAPD_NET 18