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package pppoe
// PPPoECode indicates the PPPoE packet type.
type PPPoECode uint8
// PPPoESessionID, in combination with the peer's Ethernet addresses,
// uniquely identifies a given PPPoE session.
type PPPoESessionID uint16
// PPPoETagType identifies the tags contained in the data payload of
// PPPoE discovery packets.
type PPPoETagType uint16
// PPPoE packet codes.
const (
// PPPoE Active Discovery Initiation packet
PPPoECodePADI PPPoECode = 0x09
// PPPoE Active Discovery Offer packet
PPPoECodePADO PPPoECode = 0x07
// PPPoE Active Discovery Request packet
PPPoECodePADR PPPoECode = 0x19
// PPPoE Active Discovery Session-confirmation packet
PPPoECodePADS PPPoECode = 0x65
// PPPoE Active Discovery Terminate packet
PPPoECodePADT PPPoECode = 0xa7
)
// PPPoE Tag types.
//
// PPPoE packets may contain zero or more tags, which are
// TLV constructs.
const (
PPPoETagTypeEOL PPPoETagType = 0x0000
PPPoETagTypeServiceName PPPoETagType = 0x0101
PPPoETagTypeACName PPPoETagType = 0x0102
PPPoETagTypeHostUniq PPPoETagType = 0x0103
PPPoETagTypeACCookie PPPoETagType = 0x0104
PPPoETagTypeVendorSpecific PPPoETagType = 0x0105
PPPoETagTypeRelaySessionID PPPoETagType = 0x0110
PPPoETagTypeServiceNameError PPPoETagType = 0x0201
PPPoETagTypeACSystemError PPPoETagType = 0x0202
PPPoETagTypeGenericError PPPoETagType = 0x0203
)
// internal constants
const (
pppoePacketMinLength = 20 // raw packet: 14 bytes Ethernet header, 6 bytes PPPoE header
pppoeTagMinLength = 4 // bytes: 2 for type, 2 for length
)
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