diff options
Diffstat (limited to 'pkg/tcpip/header/ipv6.go')
| -rw-r--r-- | pkg/tcpip/header/ipv6.go | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/pkg/tcpip/header/ipv6.go b/pkg/tcpip/header/ipv6.go index bc4e56535..093850e25 100644 --- a/pkg/tcpip/header/ipv6.go +++ b/pkg/tcpip/header/ipv6.go @@ -22,12 +22,14 @@ import ( ) const ( - versTCFL = 0 - payloadLen = 4 - nextHdr = 6 - hopLimit = 7 - v6SrcAddr = 8 - v6DstAddr = v6SrcAddr + IPv6AddressSize + versTCFL = 0 + // IPv6PayloadLenOffset is the offset of the PayloadLength field in + // IPv6 header. + IPv6PayloadLenOffset = 4 + nextHdr = 6 + hopLimit = 7 + v6SrcAddr = 8 + v6DstAddr = v6SrcAddr + IPv6AddressSize ) // IPv6Fields contains the fields of an IPv6 packet. It is used to describe the @@ -94,7 +96,7 @@ var IPv6EmptySubnet = func() tcpip.Subnet { // PayloadLength returns the value of the "payload length" field of the ipv6 // header. func (b IPv6) PayloadLength() uint16 { - return binary.BigEndian.Uint16(b[payloadLen:]) + return binary.BigEndian.Uint16(b[IPv6PayloadLenOffset:]) } // HopLimit returns the value of the "hop limit" field of the ipv6 header. @@ -148,7 +150,7 @@ func (b IPv6) SetTOS(t uint8, l uint32) { // SetPayloadLength sets the "payload length" field of the ipv6 header. func (b IPv6) SetPayloadLength(payloadLength uint16) { - binary.BigEndian.PutUint16(b[payloadLen:], payloadLength) + binary.BigEndian.PutUint16(b[IPv6PayloadLenOffset:], payloadLength) } // SetSourceAddress sets the "source address" field of the ipv6 header. |