Module data 

IEEE 802.11 data frame subtypes and QoS handling.

Data frames carry the actual payload data in 802.11 networks. QoS data frames include a 2-byte QoS Control field after the 802.11 header (and before the payload/security headers).

Structs

AMsduSubframe

A single A-MSDU subframe.

Dot11QoS

802.11 QoS Control field (2 bytes).

Constants

AMSDU_SUBFRAME_HEADER_LEN

A-MSDU subframe header length: DA(6) + SA(6) + Length(2) = 14.

LLC_SNAP_LEN

LLC/SNAP header length.

LLC_SNAP_PREFIX

LLC/SNAP header: AA:AA:03:00:00:00 followed by 2-byte EtherType.

QOS_CTRL_LEN

QoS Control field length.

Functions

is_llc_snap

Check if the data at the given offset starts with an LLC/SNAP header.

llc_snap_ethertype

Extract the EtherType from an LLC/SNAP header at the given offset.