1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * see notice in l1oip.c
4 */
5
6/* debugging */
7#define DEBUG_L1OIP_INIT	0x00010000
8#define DEBUG_L1OIP_SOCKET	0x00020000
9#define DEBUG_L1OIP_MGR		0x00040000
10#define DEBUG_L1OIP_MSG		0x00080000
11
12/* enable to disorder received bchannels by sequence 2143658798... */
13/*
14  #define REORDER_DEBUG
15*/
16
17/* frames */
18#define L1OIP_MAX_LEN		2048		/* max packet size form l2 */
19#define L1OIP_MAX_PERFRAME	1400		/* max data size in one frame */
20
21
22/* timers */
23#define L1OIP_KEEPALIVE		15
24#define L1OIP_TIMEOUT		65
25
26
27/* socket */
28#define L1OIP_DEFAULTPORT	931
29
30
31/* channel structure */
32struct l1oip_chan {
33	struct dchannel		*dch;
34	struct bchannel		*bch;
35	u32			tx_counter;	/* counts xmit bytes/packets */
36	u32			rx_counter;	/* counts recv bytes/packets */
37	u32			codecstate;	/* used by codec to save data */
38#ifdef REORDER_DEBUG
39	int			disorder_flag;
40	struct sk_buff		*disorder_skb;
41	u32			disorder_cnt;
42#endif
43};
44
45
46/* card structure */
47struct l1oip {
48	struct list_head        list;
49
50	/* card */
51	int			registered;	/* if registered with mISDN */
52	char			name[MISDN_MAX_IDLEN];
53	int			idx;		/* card index */
54	int			pri;		/* 1=pri, 0=bri */
55	int			d_idx;		/* current dchannel number */
56	int			b_num;		/* number of bchannels */
57	u32			id;		/* id of connection */
58	int			ondemand;	/* if transmis. is on demand */
59	int			bundle;		/* bundle channels in one frm */
60	int			codec;		/* codec to use for transmis. */
61	int			limit;		/* limit number of bchannels */
62	bool			shutdown;	/* if card is released */
63
64	/* timer */
65	struct timer_list	keep_tl;
66	struct timer_list	timeout_tl;
67	int			timeout_on;
68	struct work_struct	workq;
69
70	/* socket */
71	struct socket		*socket;	/* if set, socket is created */
72	struct completion	socket_complete;/* completion of sock thread */
73	struct task_struct	*socket_thread;
74	spinlock_t		socket_lock;	/* access sock outside thread */
75	u32			remoteip;	/* if all set, ip is assigned */
76	u16			localport;	/* must always be set */
77	u16			remoteport;	/* must always be set */
78	struct sockaddr_in	sin_local;	/* local socket name */
79	struct sockaddr_in	sin_remote;	/* remote socket name */
80	struct msghdr		sendmsg;	/* ip message to send */
81	struct kvec		sendiov;	/* iov for message */
82
83	/* frame */
84	struct l1oip_chan	chan[128];	/* channel instances */
85};
86
87extern int l1oip_law_to_4bit(u8 *data, int len, u8 *result, u32 *state);
88extern int l1oip_4bit_to_law(u8 *data, int len, u8 *result);
89extern int l1oip_alaw_to_ulaw(u8 *data, int len, u8 *result);
90extern int l1oip_ulaw_to_alaw(u8 *data, int len, u8 *result);
91extern void l1oip_4bit_free(void);
92extern int l1oip_4bit_alloc(int ulaw);
93