1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/* -----------------------------------------------------------------------------
* Copyright (c) 2011 Ozmo Inc
* Released under the GNU General Public License Version 2 (GPLv2).
* -----------------------------------------------------------------------------
*/
#ifndef _OZELTBUF_H
#define _OZELTBUF_H
#include "ozprotocol.h"
/*-----------------------------------------------------------------------------
*/
struct oz_pd;
typedef void (*oz_elt_callback_t)(struct oz_pd *pd, long context);
struct oz_elt_stream {
struct list_head link;
struct list_head elt_list;
atomic_t ref_count;
unsigned buf_count;
unsigned max_buf_count;
u8 frame_number;
u8 id;
};
#define OZ_MAX_ELT_PAYLOAD 255
struct oz_elt_info {
struct list_head link;
struct list_head link_order;
u8 flags;
u8 app_id;
oz_elt_callback_t callback;
long context;
struct oz_elt_stream *stream;
u8 data[sizeof(struct oz_elt) + OZ_MAX_ELT_PAYLOAD];
int length;
unsigned magic;
};
/* Flags values */
#define OZ_EI_F_MARKED 0x1
struct oz_elt_buf {
spinlock_t lock;
struct list_head stream_list;
struct list_head order_list;
struct list_head isoc_list;
struct list_head *elt_pool;
int free_elts;
int max_free_elts;
u8 tx_seq_num[OZ_NB_APPS];
};
int oz_elt_buf_init(struct oz_elt_buf *buf);
void oz_elt_buf_term(struct oz_elt_buf *buf);
struct oz_elt_info *oz_elt_info_alloc(struct oz_elt_buf *buf);
void oz_elt_info_free(struct oz_elt_buf *buf, struct oz_elt_info *ei);
void oz_elt_info_free_chain(struct oz_elt_buf *buf, struct list_head *list);
int oz_elt_stream_create(struct oz_elt_buf *buf, u8 id, int max_buf_count);
int oz_elt_stream_delete(struct oz_elt_buf *buf, u8 id);
void oz_elt_stream_get(struct oz_elt_stream *st);
void oz_elt_stream_put(struct oz_elt_stream *st);
int oz_queue_elt_info(struct oz_elt_buf *buf, u8 isoc, u8 id,
struct oz_elt_info *ei);
int oz_select_elts_for_tx(struct oz_elt_buf *buf, u8 isoc, unsigned *len,
unsigned max_len, struct list_head *list);
int oz_are_elts_available(struct oz_elt_buf *buf);
void oz_trim_elt_pool(struct oz_elt_buf *buf);
#endif /* _OZELTBUF_H */
|
