projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f8bd9091 SF |
1 | /* |
| 2 | * Copyright 2010 Cisco Systems, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software; you may redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| 6 | * the Free Software Foundation; version 2 of the License. | |
| 7 | * | |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| 9 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 10 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| 11 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
| 12 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| 13 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| 14 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| 15 | * SOFTWARE. | |
| 16 | * | |
| 17 | */ | |
| 18 | ||
| 19 | #include <linux/kernel.h> | |
| 20 | #include <linux/errno.h> | |
| 21 | #include <linux/types.h> | |
| 22 | #include <linux/slab.h> | |
| 23 | ||
| 24 | #include "vnic_vic.h" | |
| 25 | ||
| 26 | struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, u8 *oui, u8 type) | |
| 27 | { | |
| 28 | struct vic_provinfo *vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags); | |
| 29 | ||
| 30 | if (!vp || !oui) | |
| 31 | return NULL; | |
| 32 | ||
| 33 | memcpy(vp->oui, oui, sizeof(vp->oui)); | |
| 34 | vp->type = type; | |
| 35 | vp->length = htonl(sizeof(vp->num_tlvs)); | |
| 36 | ||
| 37 | return vp; | |
| 38 | } | |
| 39 | ||
| 40 | void vic_provinfo_free(struct vic_provinfo *vp) | |
| 41 | { | |
| 42 | kfree(vp); | |
| 43 | } | |
| 44 | ||
| 45 | int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length, | |
| 46 | void *value) | |
| 47 | { | |
| 48 | struct vic_provinfo_tlv *tlv; | |
| 49 | ||
| 50 | if (!vp || !value) | |
| 51 | return -EINVAL; | |
| 52 | ||
| 53 | if (ntohl(vp->length) + sizeof(*tlv) + length > | |
| 54 | VIC_PROVINFO_MAX_TLV_DATA) | |
| 55 | return -ENOMEM; | |
| 56 | ||
| 57 | tlv = (struct vic_provinfo_tlv *)((u8 *)vp->tlv + | |
| 58 | ntohl(vp->length) - sizeof(vp->num_tlvs)); | |
| 59 | ||
| 60 | tlv->type = htons(type); | |
| 61 | tlv->length = htons(length); | |
| 62 | memcpy(tlv->value, value, length); | |
| 63 | ||
| 64 | vp->num_tlvs = htonl(ntohl(vp->num_tlvs) + 1); | |
| 65 | vp->length = htonl(ntohl(vp->length) + sizeof(*tlv) + length); | |
| 66 | ||
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | size_t vic_provinfo_size(struct vic_provinfo *vp) | |
| 71 | { | |
| 72 | return vp ? ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0; | |
| 73 | } |