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package dhcpv6
import (
"fmt"
"github.com/u-root/u-root/pkg/uio"
)
// NetworkInterfaceType is the NIC type as defined by RFC 4578 Section 2.2
type NetworkInterfaceType uint8
// see rfc4578
const (
NII_LANDESK_NOPXE NetworkInterfaceType = 0
NII_PXE_GEN_I NetworkInterfaceType = 1
NII_PXE_GEN_II NetworkInterfaceType = 2
NII_UNDI_NOEFI NetworkInterfaceType = 3
NII_UNDI_EFI_GEN_I NetworkInterfaceType = 4
NII_UNDI_EFI_GEN_II NetworkInterfaceType = 5
)
func (nit NetworkInterfaceType) String() string {
if s, ok := niiToStringMap[nit]; ok {
return s
}
return fmt.Sprintf("NetworkInterfaceType(%d, unknown)", nit)
}
var niiToStringMap = map[NetworkInterfaceType]string{
NII_LANDESK_NOPXE: "LANDesk service agent boot ROMs. No PXE",
NII_PXE_GEN_I: "First gen. PXE boot ROMs",
NII_PXE_GEN_II: "Second gen. PXE boot ROMs",
NII_UNDI_NOEFI: "UNDI 32/64 bit. UEFI drivers, no UEFI runtime",
NII_UNDI_EFI_GEN_I: "UNDI 32/64 bit. UEFI runtime 1st gen",
NII_UNDI_EFI_GEN_II: "UNDI 32/64 bit. UEFI runtime 2nd gen",
}
// OptNetworkInterfaceID implements the NIC ID option for network booting as
// defined by RFC 4578 Section 2.2 and RFC 5970 Section 3.4.
type OptNetworkInterfaceID struct {
Typ NetworkInterfaceType
// Revision number
Major, Minor uint8
}
// Code implements Option.Code.
func (*OptNetworkInterfaceID) Code() OptionCode {
return OptionNII
}
// ToBytes implements Option.ToBytes.
func (op *OptNetworkInterfaceID) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
buf.Write8(uint8(op.Typ))
buf.Write8(op.Major)
buf.Write8(op.Minor)
return buf.Data()
}
func (op *OptNetworkInterfaceID) String() string {
return fmt.Sprintf("NetworkInterfaceID: %s (Revision %d.%d)", op.Typ, op.Major, op.Minor)
}
// FromBytes builds an OptNetworkInterfaceID structure from a sequence of
// bytes. The input data does not include option code and length bytes.
func (op *OptNetworkInterfaceID) FromBytes(data []byte) error {
buf := uio.NewBigEndianBuffer(data)
op.Typ = NetworkInterfaceType(buf.Read8())
op.Major = buf.Read8()
op.Minor = buf.Read8()
return buf.FinError()
}
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