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 */
32 struct 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 */
47 struct 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
63 /* timer */
64 struct timer_list keep_tl;
65 struct timer_list timeout_tl;
66 int timeout_on;
67 struct work_struct workq;
68
69 /* socket */
70 struct socket *socket; /* if set, socket is created */
71 struct completion socket_complete;/* completion of sock thread */
72 struct task_struct *socket_thread;
73 spinlock_t socket_lock; /* access sock outside thread */
74 u32 remoteip; /* if all set, ip is assigned */
75 u16 localport; /* must always be set */
76 u16 remoteport; /* must always be set */
77 struct sockaddr_in sin_local; /* local socket name */
78 struct sockaddr_in sin_remote; /* remote socket name */
79 struct msghdr sendmsg; /* ip message to send */
80 struct kvec sendiov; /* iov for message */
81
82 /* frame */
83 struct l1oip_chan chan[128]; /* channel instances */
84 };
85
86 extern int l1oip_law_to_4bit(u8 *data, int len, u8 *result, u32 *state);
87 extern int l1oip_4bit_to_law(u8 *data, int len, u8 *result);
88 extern int l1oip_alaw_to_ulaw(u8 *data, int len, u8 *result);
89 extern int l1oip_ulaw_to_alaw(u8 *data, int len, u8 *result);
90 extern void l1oip_4bit_free(void);
91 extern int l1oip_4bit_alloc(int ulaw);