a752c7ab
 elopes
add first test an...
|
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
71
72
73
74
75
76
77
|
/*
* Copyright (C) 2015-2017 Simon Brummer
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @defgroup net_gnrc_tcp TCP
* @ingroup net_gnrc
* @brief RIOT's TCP implementation for the GNRC network stack.
*
* @{
*
* @file
* @brief Functions for allocating and freeing the receive buffer.
*
* @author Simon Brummer <simon.brummer@posteo.de>
*/
#ifndef RCVBUF_H
#define RCVBUF_H
#include <stdint.h>
#include "mutex.h"
#include "net/gnrc/tcp/config.h"
#include "net/gnrc/tcp/tcb.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Receive buffer entry.
*/
typedef struct rcvbuf_entry {
uint8_t used; /**< Flag: Is buffer in use? */
uint8_t buffer[GNRC_TCP_RCV_BUF_SIZE]; /**< Receive buffer storage */
} rcvbuf_entry_t;
/**
* @brief Stuct holding receive buffers.
*/
typedef struct rcvbuf {
mutex_t lock; /**< Lock for allocation synchronization */
rcvbuf_entry_t entries[GNRC_TCP_RCV_BUFFERS]; /**< Maintained receive buffers */
} rcvbuf_t;
/**
* @brief Initializes global receive buffer.
*/
void _rcvbuf_init(void);
/**
* @brief Allocate receive buffer and assign it to TCB.
*
* @param[in,out] tcb TCB that aquires receive buffer.
*
* @returns Zero on success.
* -ENOMEM if all receive buffers are currently used.
*/
int _rcvbuf_get_buffer(gnrc_tcp_tcb_t *tcb);
/**
* @brief Release allocated receive buffer.
*
* @param[in,out] tcb TCB holding the receive buffer that should be released.
*/
void _rcvbuf_release_buffer(gnrc_tcp_tcb_t *tcb);
#ifdef __cplusplus
}
#endif
#endif /* RCVBUF_H */
/** @} */
|