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
78
|
/*********************************************************************
*
* Filename: gnetbuf.h
* Version:
* Description:
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Fri Mar 19 09:06:47 1999
* Modified at: Tue Sep 7 22:38:59 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
* Sources: skbuff.h by Alan Cox <iiitac@pyr.swan.ac.uk> and
* Florian La Roche <rzsfl@rz.uni-sb.de>
*
* Copyright (c) 1999 Dag Brattli, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* Neither Dag Brattli nor University of Troms admit liability nor
* provide warranty for any of this software. This material is
* provided "AS-IS" and at no charge.
*
* This code is very inspired by skbuff.h, and this is how it work:
*
* |<------------ truesize ----------------->|
* ------------------------------------------
* | headroom | len | tailroom |
* ------------------------------------------
* ^ ^ ^ ^
* | | | |
* head data tail end
*
********************************************************************/
#ifndef G_NETBUF_H
#define G_NETBUF_H
#include <inttypes.h>
typedef struct _slist_t{
void *data;
struct _slist_t *next;
} slist_t;
typedef struct _GNetBuf GNetBuf;
struct _GNetBuf {
uint8_t *data; /* Pointer to the actual data */
uint8_t *head; /* Pointer to start of buffer */
uint8_t *tail; /* Pointer to end of data */
uint8_t *end; /* Pointer to end of buffer */
unsigned int len; /* Length of data */
unsigned int truesize; /* Real size of the buffer */
};
GNetBuf *g_netbuf_new(unsigned int len);
GNetBuf *g_netbuf_realloc(GNetBuf *buf, unsigned int len);
void g_netbuf_free(GNetBuf *msg);
GNetBuf *g_netbuf_recycle(GNetBuf *msg);
uint8_t *g_netbuf_put(GNetBuf *msg, unsigned int len);
uint8_t *g_netbuf_put_data(GNetBuf *msg, uint8_t *data, unsigned int len);
uint8_t *g_netbuf_push(GNetBuf *msg, unsigned int len);
uint8_t *g_netbuf_pull(GNetBuf *msg, unsigned int len);
void g_netbuf_reserve(GNetBuf *msg, unsigned int len);
int g_netbuf_headroom(GNetBuf *msg);
int g_netbuf_tailroom(GNetBuf *msg);
void g_netbuf_set_size(GNetBuf *msg, unsigned int len);
void g_netbuf_print(const char *fname, GNetBuf *msg);
static inline uint8_t *g_netbuf_get_data(GNetBuf *msg) { return msg->data; }
static inline uint8_t g_netbuf_get_len(GNetBuf *msg) { return msg->len; }
slist_t *slist_append(slist_t *list, void *data);
slist_t *slist_remove(slist_t *list, void *data);
#endif
|
