Icmpv6Header¶

Namespace: inet

class Icmpv6Header

Represents an ICMPv6 packet.

Notes:

number of octets excluding the error datagram that is usually appended in optInfo, i.e. the Type|CODE|CHECKSUM|UNUSED/POINTER/MTU/OTHER as defined in RFC2463
Any ICMP type with MSB set, i.e. >=128 is an Informational ICMP message

Usage diagram¶

Inheritance diagram¶

Extends¶

Name	Type	Description
FieldsChunk	class	(no description)

Known subclasses¶

Name	Type	Description
Icmpv6DestUnreachableMsg	class	Notes: 1. As defined in RFC2463: Section 3
Icmpv6EchoReplyMsg	class	Icmpv6 Echo Reply packet. Data is attached through encapsulation (see Icmpv6.cc)
Icmpv6EchoRequestMsg	class	ICMPv6 Echo Request packet (RFC2463: Section 4). Data is attached through encapsulation (see Icmpv6.cc)
Icmpv6PacketTooBigMsg	class	(no description)
Icmpv6ParamProblemMsg	class	(no description)
Icmpv6TimeExceededMsg	class	(no description)
Ipv6NdMessage	class	Neighbour Discovery for Ipv6. RFC 2461
MldMessage	class	Base class for MLDv1 messages (RFC 2710). Carried as ICMPv6 type 130 (Query), 131 (Report), 132 (Done). Inherits type, chksum, and checksumMode from Icmpv6Header.
Mldv2Report	class	MLDv2 Multicast Listener Report (RFC 3810 §5.2, ICMPv6 type 143).

Fields¶

Name	Type	Description
id	int
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
chunkLength	b
rawBin	string[]
rawHex	string[]
regionTags	SharingRegionTagSet::TagBaseRegionTag[]
chunkLength
type	Icmpv6Type	1 byte int code; // 1 byte //TODO this should be specific to different ICMP types.
chksum	int	2 bytes
checksumMode	ChecksumMode	4 bytes ‘type’ specific values

Properties¶

Name	Value	Description
beforeChange	handleChange()
descriptor	readonly
existingClass
packetData

Source code¶

//
// Represents an ICMPv6 packet.
//
// Notes:
//    1. number of octets excluding the error datagram that is usually appended
//       in optInfo, i.e. the Type|CODE|CHECKSUM|UNUSED/POINTER/MTU/OTHER
//       as defined in RFC2463
//    2. Any ICMP type with MSB set, i.e. >=128 is an Informational ICMP message
//
class Icmpv6Header extends FieldsChunk
{
    chunkLength = ICMPv6_HEADER_BYTES;
    Icmpv6Type type;     // 1 byte
    //int code; // 1 byte //TODO this should be specific to different ICMP types.
    int chksum = 0;     // 2 bytes
    ChecksumMode checksumMode = CHECKSUM_MODE_UNDEFINED;
    // 4 bytes 'type' specific values
}

File: src/inet/networklayer/icmpv6/Icmpv6Header.msg