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Diffstat (limited to 'drivers/net/wireless/ralink/rt2x00/rt2x00dump.h')
| -rw-r--r-- | drivers/net/wireless/ralink/rt2x00/rt2x00dump.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00dump.h b/drivers/net/wireless/ralink/rt2x00/rt2x00dump.h new file mode 100644 index 000000000000..4c0e01b5d515 --- /dev/null +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dump.h @@ -0,0 +1,127 @@ +/* + Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> + <http://rt2x00.serialmonkey.com> + + 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 + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + 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 <http://www.gnu.org/licenses/>. + */ + +/* + Module: rt2x00dump + Abstract: + 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 { + DUMP_FRAME_RXDONE = 1, + DUMP_FRAME_TX = 2, + DUMP_FRAME_TXDONE = 3, + DUMP_FRAME_BEACON = 4, +}; + +/** + * 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; +#define DUMP_HEADER_VERSION 2 + + __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 */ |