diff options
Diffstat (limited to 'dhcpv6/option_interfaceid.go')
| -rw-r--r-- | dhcpv6/option_interfaceid.go | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/dhcpv6/option_interfaceid.go b/dhcpv6/option_interfaceid.go index 2bee744..000be5d 100644 --- a/dhcpv6/option_interfaceid.go +++ b/dhcpv6/option_interfaceid.go @@ -1,13 +1,16 @@ package dhcpv6 -// This module defines the OptInterfaceId structure. -// https://www.ietf.org/rfc/rfc3315.txt - import ( - "encoding/binary" "fmt" + + "github.com/u-root/u-root/pkg/uio" ) +// OptInterfaceId implements the interface-id option as defined by RFC 3315, +// Section 22.18. +// +// This module defines the OptInterfaceId structure. +// https://www.ietf.org/rfc/rfc3315.txt type OptInterfaceId struct { interfaceId []byte } @@ -17,11 +20,11 @@ func (op *OptInterfaceId) Code() OptionCode { } func (op *OptInterfaceId) ToBytes() []byte { - buf := make([]byte, 4) - binary.BigEndian.PutUint16(buf[0:2], uint16(OptionInterfaceID)) - binary.BigEndian.PutUint16(buf[2:4], uint16(len(op.interfaceId))) - buf = append(buf, op.interfaceId...) - return buf + buf := uio.NewBigEndianBuffer(nil) + buf.Write16(uint16(OptionInterfaceID)) + buf.Write16(uint16(len(op.interfaceId))) + buf.WriteBytes(op.interfaceId) + return buf.Data() } func (op *OptInterfaceId) InterfaceID() []byte { @@ -43,7 +46,7 @@ func (op *OptInterfaceId) String() string { // build an OptInterfaceId structure from a sequence of bytes. // The input data does not include option code and length bytes. func ParseOptInterfaceId(data []byte) (*OptInterfaceId, error) { - opt := OptInterfaceId{} + var opt OptInterfaceId opt.interfaceId = append([]byte(nil), data...) return &opt, nil } |