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

source code of linux/drivers/isdn/mISDN/l1oip.h