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Copyright (C) 2004 - 2009 Ivo van Doorn <>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <>.
Module: rt2x00dump
Data structures for the rt2x00debug & userspace.
The declarations in this file can be used by both rt2x00
and userspace and therefore should be kept together in
this file.
#ifndef RT2X00DUMP_H
#define RT2X00DUMP_H
* DOC: Introduction
* This header is intended to be exported to userspace,
* to make the structures and enumerations available to userspace
* applications. This means that all data types should be exportable.
* When rt2x00 is compiled with debugfs support enabled,
* it is possible to capture all data coming in and out of the device
* by reading the frame dump file. This file can have only a single reader.
* The following frames will be reported:
* - All incoming frames (rx)
* - All outgoing frames (tx, including beacon and atim)
* - All completed frames (txdone including atim)
* The data is send to the file using the following format:
* [rt2x00dump header][hardware descriptor][ieee802.11 frame]
* rt2x00dump header: The description of the dumped frame, as well as
* additional information useful for debugging. See &rt2x00dump_hdr.
* hardware descriptor: Descriptor that was used to receive or transmit
* the frame.
* ieee802.11 frame: The actual frame that was received or transmitted.
* enum rt2x00_dump_type - Frame type
* These values are used for the @type member of &rt2x00dump_hdr.
* @DUMP_FRAME_RXDONE: This frame has been received by the hardware.
* @DUMP_FRAME_TX: This frame is queued for transmission to the hardware.
* @DUMP_FRAME_TXDONE: This frame indicates the device has handled
* the tx event which has either succeeded or failed. A frame
* with this type should also have been reported with as a
* %DUMP_FRAME_TX frame.
* @DUMP_FRAME_BEACON: This beacon frame is queued for transmission to the
* hardware.
enum rt2x00_dump_type {
* struct rt2x00dump_hdr - Dump frame header
* Each frame dumped to the debugfs file starts with this header
* attached. This header contains the description of the actual
* frame which was dumped.
* New fields inside the structure must be appended to the end of
* the structure. This way userspace tools compiled for earlier
* header versions can still correctly handle the frame dump
* (although they will not handle all data passed to them in the dump).
* @version: Header version should always be set to %DUMP_HEADER_VERSION.
* This field must be checked by userspace to determine if it can
* handle this frame.
* @header_length: The length of the &rt2x00dump_hdr structure. This is
* used for compatibility reasons so userspace can easily determine
* the location of the next field in the dump.
* @desc_length: The length of the device descriptor.
* @data_length: The length of the frame data (including the ieee802.11 header.
* @chip_rt: RT chipset
* @chip_rf: RF chipset
* @chip_rev: Chipset revision
* @type: The frame type (&rt2x00_dump_type)
* @queue_index: The index number of the data queue.
* @entry_index: The index number of the entry inside the data queue.
* @timestamp_sec: Timestamp - seconds
* @timestamp_usec: Timestamp - microseconds
struct rt2x00dump_hdr {
__le32 version;
__le32 header_length;
__le32 desc_length;
__le32 data_length;
__le16 chip_rt;
__le16 chip_rf;
__le16 chip_rev;
__le16 type;
__u8 queue_index;
__u8 entry_index;
__le32 timestamp_sec;
__le32 timestamp_usec;
#endif /* RT2X00DUMP_H */