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/* SPDX-License-Identifier: GPL-2.0 */
/*
* see notice in l1oip.c
*/
/* debugging */
#define DEBUG_L1OIP_INIT 0x00010000
#define DEBUG_L1OIP_SOCKET 0x00020000
#define DEBUG_L1OIP_MGR 0x00040000
#define DEBUG_L1OIP_MSG 0x00080000
/* enable to disorder received bchannels by sequence 2143658798... */
/*
#define REORDER_DEBUG
*/
/* frames */
#define L1OIP_MAX_LEN 2048 /* max packet size form l2 */
#define L1OIP_MAX_PERFRAME 1400 /* max data size in one frame */
/* timers */
#define L1OIP_KEEPALIVE 15
#define L1OIP_TIMEOUT 65
/* socket */
#define L1OIP_DEFAULTPORT 931
/* channel structure */
struct l1oip_chan {
struct dchannel *dch;
struct bchannel *bch;
u32 tx_counter; /* counts xmit bytes/packets */
u32 rx_counter; /* counts recv bytes/packets */
u32 codecstate; /* used by codec to save data */
#ifdef REORDER_DEBUG
int disorder_flag;
struct sk_buff *disorder_skb;
u32 disorder_cnt;
#endif
};
/* card structure */
struct l1oip {
struct list_head list;
/* card */
int registered; /* if registered with mISDN */
char name[MISDN_MAX_IDLEN];
int idx; /* card index */
int pri; /* 1=pri, 0=bri */
int d_idx; /* current dchannel number */
int b_num; /* number of bchannels */
u32 id; /* id of connection */
int ondemand; /* if transmis. is on demand */
int bundle; /* bundle channels in one frm */
int codec; /* codec to use for transmis. */
int limit; /* limit number of bchannels */
bool shutdown; /* if card is released */
/* timer */
struct timer_list keep_tl;
struct timer_list timeout_tl;
int timeout_on;
struct work_struct workq;
/* socket */
struct socket *socket; /* if set, socket is created */
struct completion socket_complete;/* completion of sock thread */
struct task_struct *socket_thread;
spinlock_t socket_lock; /* access sock outside thread */
u32 remoteip; /* if all set, ip is assigned */
u16 localport; /* must always be set */
u16 remoteport; /* must always be set */
struct sockaddr_in sin_local; /* local socket name */
struct sockaddr_in sin_remote; /* remote socket name */
struct msghdr sendmsg; /* ip message to send */
struct kvec sendiov; /* iov for message */
/* frame */
struct l1oip_chan chan[128]; /* channel instances */
};
extern int l1oip_law_to_4bit(u8 *data, int len, u8 *result, u32 *state);
extern int l1oip_4bit_to_law(u8 *data, int len, u8 *result);
extern int l1oip_alaw_to_ulaw(u8 *data, int len, u8 *result);
extern int l1oip_ulaw_to_alaw(u8 *data, int len, u8 *result);
extern void l1oip_4bit_free(void);
extern int l1oip_4bit_alloc(int ulaw);
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