mirror of https://gitee.com/openkylin/linux.git
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/*
|
|
* 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;
|
|
}
|