Ieee80211MacHeader

class

The common part of 802.11 frames.

NOTE: FCS value is not explicitly modeled, but it is included in the length. Frame control format fields not supported by this model are omitted: MoreFlag, PowerMgmt, MoreData, WEP, Order.

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
FieldsChunk	class	(no description)

Known subclasses

Name	Type	Description
Ieee80211OneAddressHeader	class	Format of a 802.11 frame with address1 present, like ACK and CTS

Fields

Name	Type	Description
chunkLength	b
type	Ieee80211FrameType	type and subtype
toDS	bool
fromDS	bool
moreFragments	bool
retry	bool
powerMgmt	bool	unused
moreData	bool	unused
protectedFrame	bool	unused
order	bool	unused
durationField	simtime_t	"duration" in the Duration/ID field (-1=no duration)
AID	short	"id" (Association ID) in the Duration/ID field (-1=no ID)
receiverAddress	MacAddress	aka address1 (RA)
MACArrive	simtime_t	FIXME remove it, technical data, used inside of MAC module
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
rawBin	string[]
rawHex	string[]
tags	RegionTagSet::cObjectRegionTag[]

Source code

//
// The common part of 802.11 frames.
//
// NOTE:
// FCS value is not explicitly modeled, but it is included in the length.
// Frame control format fields not supported by this model are omitted:
// MoreFlag, PowerMgmt, MoreData, WEP, Order.
//
class Ieee80211MacHeader extends FieldsChunk
{
    chunkLength = LENGTH_ACK - B(4);
    Ieee80211FrameType type; // type and subtype
    bool toDS;
    bool fromDS;
    bool moreFragments;
    bool retry;
    bool powerMgmt = false; // unused
    bool moreData = false; // unused
    bool protectedFrame = false; // unused
    bool order = false; // unused
    simtime_t durationField = -1; // "duration" in the Duration/ID field (-1=no duration)
    short AID = -1;          // "id" (Association ID) in the Duration/ID field (-1=no ID)
    MacAddress receiverAddress; // aka address1 (RA)
    simtime_t MACArrive;    // FIXME remove it, technical data, used inside of MAC module
}

File: src/inet/linklayer/ieee80211/mac/Ieee80211Frame.msg