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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Definitions for the 'struct sk_buff' memory handlers in U-Boot.
*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <common.h>
#include "u-boot_compat.h"
#define MAX_SKB 50
static struct sk_buff *sk_table[MAX_SKB];
struct sk_buff * alloc_skb(u32 size, int dummy)
{
int i;
struct sk_buff * ret = NULL;
for (i = 0; i < MAX_SKB; i++)
{
if (sk_table[i])
{
/* Already allocated.
*/
continue;
}
sk_table[i] = malloc(sizeof(struct sk_buff));
if (! sk_table[i])
{
printf("alloc_skb: malloc failed\n");
break;
}
memset(sk_table[i], 0, sizeof(struct sk_buff));
sk_table[i]->data = sk_table[i]->data_unaligned =
malloc(size + 16);
if (! sk_table[i]->data)
{
printf("alloc_skb: malloc failed\n");
free(sk_table[i]);
sk_table[i] = NULL;
break;
}
sk_table[i]->data += 16 - ((u32)sk_table[i]->data & 15);
sk_table[i]->len = size;
break;
}
if (i < MAX_SKB)
{
ret = sk_table[i];
}
if (! ret)
{
printf("Unable to allocate skb!\n");
}
return ret;
}
void dev_kfree_skb_any(struct sk_buff *skb)
{
int i;
for (i = 0; i < MAX_SKB; i++)
{
if (sk_table[i] != skb)
{
continue;
}
free(skb->data_unaligned);
free(skb);
sk_table[i] = NULL;
break;
}
if (i == MAX_SKB)
{
printf("SKB allocation error!\n");
}
}
void skb_reserve(struct sk_buff *skb, unsigned int len)
{
skb->data+=len;
}
void skb_put(struct sk_buff *skb, unsigned int len)
{
skb->len+=len;
}
|
