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
|
/*
* Copyright 2010 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/slab.h>
#include "vnic_vic.h"
struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, u8 *oui, u8 type)
{
struct vic_provinfo *vp;
if (!oui)
return NULL;
vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags);
if (!vp)
return NULL;
memcpy(vp->oui, oui, sizeof(vp->oui));
vp->type = type;
vp->length = htonl(sizeof(vp->num_tlvs));
return vp;
}
void vic_provinfo_free(struct vic_provinfo *vp)
{
kfree(vp);
}
int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length,
void *value)
{
struct vic_provinfo_tlv *tlv;
if (!vp || !value)
return -EINVAL;
if (ntohl(vp->length) + offsetof(struct vic_provinfo_tlv, value) +
length > VIC_PROVINFO_MAX_TLV_DATA)
return -ENOMEM;
tlv = (struct vic_provinfo_tlv *)((u8 *)vp->tlv +
ntohl(vp->length) - sizeof(vp->num_tlvs));
tlv->type = htons(type);
tlv->length = htons(length);
memcpy(tlv->value, value, length);
vp->num_tlvs = htonl(ntohl(vp->num_tlvs) + 1);
vp->length = htonl(ntohl(vp->length) +
offsetof(struct vic_provinfo_tlv, value) + length);
return 0;
}
size_t vic_provinfo_size(struct vic_provinfo *vp)
{
return vp ? ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0;
}
|
