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/*
Copyright (c) 2015-2015 Cisco Systems, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include <common/BigEndianBitManipulation.h>
inline void VLANHeader::setVlanTag(uint16_t data)
{
myTag = PKT_HTONS(data);
}
inline uint16_t VLANHeader::getVlanTag()
{
return(PKT_HTONS(myTag));
}
inline void VLANHeader::setTagUserPriorty(uint8_t argUserPriority)
{
uint16_t tempTag = myTag;
setMaskBit16(tempTag, 0, 2, argUserPriority);
myTag = tempTag;
}
inline uint8_t VLANHeader::getTagUserPriorty()
{
return (uint8_t)(getMaskBit16(myTag, 0, 2));
}
inline void VLANHeader::setTagCFI(bool isSet)
{
uint16_t tempTag = myTag;
setMaskBit16(tempTag, 3, 3, isSet? 1 : 0);
myTag = tempTag;
}
inline bool VLANHeader::getTagCFI()
{
return (getMaskBit16(myTag, 3, 3) == 1);
}
// This returns host order
inline uint16_t VLANHeader::getTagID(void)
{
return getMaskBit16(myTag, 4, 15);
}
inline void VLANHeader::setTagID(uint16_t argNewTag)
{
uint16_t tempTag = myTag;
setMaskBit16(tempTag, 4, 15, argNewTag);
myTag = tempTag;
}
inline void VLANHeader::incrementTagID(uint16_t inc_value)
{
uint16_t tempTag_Host = myTag;
uint16_t curTagID_Host = getTagID();
uint16_t newTagId_Host = (0xfff & (curTagID_Host + (0xfff & inc_value))); // addition with 12 LSBits
setMaskBit16(tempTag_Host, 4, 15, newTagId_Host);
myTag = tempTag_Host;
}
inline uint16_t VLANHeader::getNextProtocolNetOrder()
{
return myNextProtocol;
}
inline uint16_t VLANHeader::getNextProtocolHostOrder()
{
return (PKT_HTONS(myNextProtocol));
}
inline void VLANHeader::setNextProtocolFromHostOrder(uint16_t argNextProtocol)
{
myNextProtocol = PKT_HTONS(argNextProtocol);
}
inline void VLANHeader::setNextProtocolFromNetOrder(uint16_t argNextProtocol)
{
myNextProtocol = argNextProtocol;
}
inline void VLANHeader::setFromPkt (uint8_t* data)
{
// set the tag from the data
setVlanTag(*(uint16_t*)data);
setNextProtocolFromNetOrder(*((uint16_t*)(data + 2))); // next protocol is after the vlan tag
}
inline uint8_t VLANHeader::reconstructPkt (uint8_t* destBuff)
{
*(uint16_t*)destBuff = getVlanTag();
*(uint16_t*)(destBuff+2) = getNextProtocolNetOrder();
return sizeof(VLANHeader);
}
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