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