/*
Copyright (c) 2015-2016 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.
*/
#ifndef _IPV6_HEADER_H_
#define _IPV6_HEADER_H_
#include "PacketHeaderBase.h"
#define IPV6_16b_ADDR_GROUPS 8
#define IPV6_16b_ADDR_GROUPS_MSB 6
#define IPV6_HDR_LEN 40
static uint16_t default_ipv6[8] = { 0xDEAD, 0xBEEF, 0xDEAD, 0xBEEF,
0xDEAD, 0xBEEF, 0xDEAD, 0xBEEF };
class IPv6Header
{
/*
* IPV6 extension headers
*/
enum ext_headers_e {
IPPROTO_HOPOPTS = 0, /* IPv6 hop-by-hop options */
IPPROTO_ROUTING = 43, /* IPv6 routing header */
IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header */
IPPROTO_ENCAP_SEC = 50, /* IPv6 encapsulation security paylod header */
IPPROTO_AUTH = 51, /* IPv6 authentication header */
IPPROTO_ICMPV6 = 58, /* ICMPv6 */
IPPROTO_NONE = 59, /* IPv6 no next header */
IPPROTO_DSTOPTS = 60, /* IPv6 destination options */
IPPROTO_MH = 135, /* IPv6 mobility header */
};
public:
IPv6Header()
{
setDestIpv6(default_ipv6);
setSourceIpv6(default_ipv6);
setTrafficClass(0xDD);
};
IPv6Header (uint16_t *argSource, uint16_t *argDestinaction, uint8_t argTrafficClass)
{
setDestIpv6(argDestinaction);
setSourceIpv6(argSource);
setTrafficClass(argTrafficClass);
};
enum
{
DefaultSize = 40
};
public:
inline uint8_t getVersion();
inline void setVersion(uint8_t);
inline uint8_t getHeaderLength() {return IPV6_HDR_LEN;}
inline uint16_t getTrafficClass();
inline void setTrafficClass(uint16_t);
inline uint32_t getFlowLabel();
inline void setFlowLabel(uint32_t);
inline uint16_t getPayloadLen();
inline void setPayloadLen(uint16_t);
inline uint8_t getNextHdr();
inline void setNextHdr(uint8_t);
inline uint8_t getHopLimit();
inline void setHopLimit(uint8_t);
inline void getSourceIpv6(uint16_t *);
inline void setSourceIpv6(uint16_t *);
inline void getDestIpv6(uint16_t *);
inline void setDestIpv6(uint16_t *);
uint8_t getl4Proto(uint8_t *pkt, uint16_t pkt_len, uint8_t *&p_l4);
inline void updateTrafficClass(uint8_t newclass);
inline void updatePayloadLength(uint16_t newlen);
inline void updateIpv6Src(uint16_t *ipsrc);
inline void updateIpv6Dst(uint16_t *ipdst);
inline void updateMSBIpv6Src(uint16_t *ipsrc);
inline void updateMSBIpv6Dst(uint16_t *ipdst);
inline void updateLSBIpv6Src(uint32_t ipsrc);
inline void updateLSBIpv6Dst(uint32_t ipdst);
inline void swapSrcDest();
////////////////////////////////////////////////////////////////////////////////////////
// Common Header Interface
////////////////////////////////////////////////////////////////////////////////////////
public:
inline uint8_t* getPointer (){return (uint8_t*)this;}
inline uint32_t getSize (){return getHeaderLength();}
public:
uint32_t myVer_TrafficClass_FlowLabel;
uint16_t myPayloadLen;
uint8_t myNextHdr;
uint8_t myHopLimit;
uint16_t mySource[IPV6_16b_ADDR_GROUPS];
uint16_t myDestination[IPV6_16b_ADDR_GROUPS];
uint32_t myOption[1];
};
class IPv6PseudoHeader
{
public:
uint32_t m_source_ip;
uint32_t m_dest_ip;
uint8_t m_zero;
uint8_t m_protocol;
uint16_t m_length;
public:
inline uint8_t* getPointer(){return (uint8_t*)this;}
inline uint32_t getSize();
inline uint16_t inetChecksum();
};
/////////////////////////////////////////////
// inline functions implementation
/////////////////////////////////////////////
#include <common/BigEndianBitManipulation.h>
//--------------------------------
inline uint8_t IPv6Header::getVersion()
{
return getMaskBit32(PKT_NTOHL(myVer_TrafficClass_FlowLabel), 0, 3);
}
inline void IPv6Header::setVersion(uint8_t argVersion)
{
uint32_t myVer = PKT_HTONL(myVer_TrafficClass_FlowLabel);
setMaskBit32(myVer, 0, 3, argVersion);
myVer_TrafficClass_FlowLabel = PKT_NTOHL(myVer);
}
//--------------------------------
inline uint16_t IPv6Header::getTrafficClass()
{
return getMaskBit32(PKT_NTOHL(myVer_TrafficClass_FlowLabel), 4, 11);
}
inline void
IPv6Header::setTrafficClass(uint16_t argTrafficClass)
{
uint32_t myTrafficClass = PKT_HTONL(myVer_TrafficClass_FlowLabel);
setMaskBit32(myTrafficClass, 4, 11, argTrafficClass);
myVer_TrafficClass_FlowLabel = PKT_NTOHL(myTrafficClass);
}
//--------------------------------
inline uint32_t IPv6Header::getFlowLabel()
{
return getMaskBit32(PKT_NTOHL(myVer_TrafficClass_FlowLabel), 12, 31);
}
inline void IPv6Header::setFlowLabel(uint32_t argFlowLabel)
{
uint32_t myFlowLabel = PKT_HTONL(myVer_TrafficClass_FlowLabel);
setMaskBit32(myFlowLabel, 12, 31, argFlowLabel);
myVer_TrafficClass_FlowLabel = PKT_NTOHL(myFlowLabel);
}
//--------------------------------
inline uint16_t IPv6Header::getPayloadLen()
{
return PKT_NTOHS(myPayloadLen);
}
inline void IPv6Header::setPayloadLen(uint16_t argPayloadLen)
{
myPayloadLen = PKT_HTONS(argPayloadLen);
}
//--------------------------------
inline uint8_t IPv6Header::getNextHdr()
{
return myNextHdr;
}
inline void IPv6Header::setNextHdr(uint8_t argNextHdr)
{
myNextHdr = argNextHdr;
}
//--------------------------------
inline uint8_t IPv6Header::getHopLimit()
{
return myHopLimit;
}
inline void IPv6Header::setHopLimit(uint8_t argHopLimit)
{
myHopLimit = argHopLimit;
}
//--------------------------------
inline void IPv6Header::getSourceIpv6(uint16_t *argSourceAddress)
{
uint8_t i;
for (i = 0; i < IPV6_16b_ADDR_GROUPS; i++) {
argSourceAddress[i] = PKT_NTOHS(mySource[i]);
}
}
inline void IPv6Header::setSourceIpv6(uint16_t *argSourceAddress)
{
uint8_t i;
for (i = 0; i < IPV6_16b_ADDR_GROUPS; i++) {
mySource[i] = PKT_HTONS(argSourceAddress[i]);
}
}
//--------------------------------
inline void IPv6Header::getDestIpv6(uint16_t *argDestAddress)
{
uint8_t i;
for (i=0; i<IPV6_16b_ADDR_GROUPS; i++) {
argDestAddress[i] = PKT_NTOHS(myDestination[i]);
}
}
inline void IPv6Header::setDestIpv6(uint16_t *argDestAddress)
{
uint8_t i;
for (i = 0; i < IPV6_16b_ADDR_GROUPS; i++) {
myDestination[i] = PKT_HTONS(argDestAddress[i]);
}
}
//--------------------------------
inline void IPv6Header::updateIpv6Src(uint16_t *ipsrc)
{
uint8_t i;
for (i = 0; i < IPV6_16b_ADDR_GROUPS; i++) {
mySource[i] = PKT_HTONS(ipsrc[i]);
}
}
inline void IPv6Header::updateIpv6Dst(uint16_t *ipdst)
{
uint8_t i;
for (i = 0; i < IPV6_16b_ADDR_GROUPS; i++) {
myDestination[i] = PKT_HTONS(ipdst[i]);
}
}
//--------------------------------
inline void IPv6Header::updateMSBIpv6Src(uint16_t *ipsrc)
{
uint8_t i;
for (i=0; i<IPV6_16b_ADDR_GROUPS_MSB; i++) {
mySource[i] = PKT_HTONS(ipsrc[i]);
}
}
inline void IPv6Header::updateMSBIpv6Dst(uint16_t *ipdst)
{
uint8_t i;
for (i = 0; i < IPV6_16b_ADDR_GROUPS_MSB; i++) {
myDestination[i] = PKT_HTONS(ipdst[i]);
}
}
//--------------------------------
inline void IPv6Header::updateLSBIpv6Src(uint32_t ipsrc)
{
uint32_t *lsb = (uint32_t *)&mySource[6];
*lsb = PKT_HTONL(ipsrc);
}
inline void IPv6Header::updateLSBIpv6Dst(uint32_t ipdst)
{
uint32_t *lsb = (uint32_t *)&myDestination[6];
*lsb = PKT_HTONL(ipdst);
}
//--------------------------------
inline void IPv6Header::swapSrcDest()
{
uint8_t i;
uint16_t tmp[IPV6_16b_ADDR_GROUPS];
for (i = 0; i < IPV6_16b_ADDR_GROUPS; i++) {
tmp[i] = myDestination[i];
myDestination[i] = mySource[i];
mySource[i] = tmp[i];
}
}
#endif