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- May 05, 2011
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Ivo van Doorn authored
Patch: rt2x00: Make rt2x00_queue_entry_for_each more flexible commit: 10e11568 introduced a severe regression on the throughput for USB hardware. It turns out that the exiting of the rt2x00queue_for_each_entry() was done too early. The exact cause for this regression is unknown, but by disabling the premature exiting of the loop seems to resolve the issue. Signed-off-by:
Ivo van Doorn <IvDoorn@gmail.com> Reported-by:
Yasushi SHOJI <yashi@atmark-techno.com> Reported-by:
Balint Viragh <bviragh@dension.com> Tested-by:
John W. Linville <linville@tuxdriver.com>
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Gertjan van Wingerde authored
Add necessary RF chipset define and basic support for these devices. Tested-by:
Juan Carlos Garza <juancarlosgarza@gmail.com> Signed-off-by:
Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by:
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- May 02, 2011
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Ivo van Doorn authored
The USB drivers don't support automatically waking up when in powersaving mode, add a work object which will wakeup the device in time to receive the next beacon. Based on that beacon, we either go back into powersaving mode, or we remain awake to receive the buffered frames for our station. Some part of the code, especially rt2x00lib_find_ie and rt2x00lib_rxdone_check_ps are inspired on the code from carl9170. Signed-off-by:
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Gertjan van Wingerde authored
Use flag instead of re-reading the eeprom every time. Signed-off-by:
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Gertjan van Wingerde authored
In rt2800lib.c the rt2800_init_eeprom function the same eeprom words were read multiple times, due to inefficient ordering of the eeprom checks. Reorder the checks so that each EEPROM word only has to be read once. Signed-off-by:
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Ivo van Doorn authored
The patch rt2x00: Optimize register access in rt2800pci from Helmut Schaa missed one register call, namely the rt2800_register_multiwrite which should be changed to rt2x00pci_register_multiwrite. Signed-off-by:
Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by:
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Ivo van Doorn authored
Add recycling functionality to rt2x00usb_register_read_async. When the callback function returns true, resubmit the urb to read the register again. This optimizes the rt2800usb driver when multiple TX status reports are pending in the register, because now we don't need to allocate the rt2x00_async_read_data and urb structure each time. Signed-off-by:
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Ivo van Doorn authored
When no TX status was available, the default timeout of 20ms is a bit high. The frame is highly likely already send out, so the TX status should be available within only a few milliseconds. Signed-off-by:
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- Apr 19, 2011
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Ivo van Doorn authored
Implement the get_antenna and set_antenna callback functions, which will allow clients to control the antenna for all non-11n hardware (Antenna handling in rt2800 is still a bit magical, so we can't use the set_antenna for those drivers yet). To best support the set_antenna callback some modifications are needed in the diversity handling. We should never look at the default antenna settings to determine if software diversity is enabled. Instead we should set the diversity flag when possible, which will allow the link_tuner to automatically pick up the tuning. Signed-off-by:
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Ivo van Doorn authored
With the get_ringparam callback function we can export ring parameters to ethtool through the mac80211 interface. Signed-off-by:
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Ivo van Doorn authored
All register reads/writes in rt2800usb were previously done with rt2800_register_read/rt2800_register_write. These however indirectly call rt2x00usb_register_read/rt2x00usb_register_write which adds an additional overhead of at least one call and several move instructions to each register access. Replacing the calls to rt2800_register_read/rt2800_register_write with direct calls to rt2x00usb_register_read/rt2x00usb_register_write gets rid of quite a number of instructions in the drivers hotpaths (IRQ handling and txdone handling). For consistency replace all references to rt2800_register_read/write with the rt2x00usb_register_read/write variants. Signed-off-by:
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Helmut Schaa authored
All register reads/writes in rt2800pci were previously done with rt2800_register_read/rt2800_register_write. These however indirectly call rt2x00pci_register_read/rt2x00pci_register_write which adds an additional overhead of at least one call and several move instructions to each register access. Replacing the calls to rt2800_register_read/rt2800_register_write with direct calls to rt2x00pci_register_read/rt2x00pci_register_write gets rid of quite a number of instructions in the drivers hotpaths (IRQ handling and txdone handling). For consistency replace all references to rt2800_register_read/write with the rt2x00pci_register_read/write variants. Signed-off-by:
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Gertjan van Wingerde authored
The two functions that are in rt2x00ht.c can be much better placed closer to the places where the call-sites of these functions are (one in rt2x00config.c and one in rt2x00queue.c) allowing us to make these functions static. Also, conditional compilations doesn't seem to be necessary anymore as 802.11n support is quite common nowadays. This makes the code a bit easier readable and searchable. Signed-off-by:
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Gertjan van Wingerde authored
Code seems to be feature-complete, so no reason to not enable these devices by default. Also, remove the sentence about the support for these devices being non-functional. Signed-off-by:
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Gertjan van Wingerde authored
The rt33xx devices support for both PCI and USB devices has been in the tree for a couple of months now, and seems to be functional and not in a worse shape than the support for rt28xx and rt30xx devices. No longer mark it as experimental and enable the support for these devices by default. Signed-off-by:
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Gertjan van Wingerde authored
Add USB IDs that are listed in the latest Ralink Windows and/or Linux drivers. Signed-off-by:
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Gertjan van Wingerde authored
Both USB and PCI drivers allow a system administrator to dynamically add USB/PCI IDs to the device table that a driver supports via the /sys/bus/{usb,pci,pci_express}/drivers/<driver-name>/new_id files. However, for the rt2x00 drivers using this method currently crashes the system with a NULL pointer failure. This is due to the set-up of rt2x00 where the probe functions require a rt2x00_ops structure in the driver_info field of the probed device. As this field is empty for the dynamically added devices this fails for these devices. Fix this by introducing driver-specific probe wrappers that do nothing but calling the bus-specific probe functions with the rt2x00_ops structure as an argument, rather than depending on the driver_info field. Signed-off-by: -
Gertjan van Wingerde authored
Move the USB ID entry from the unknown devices to the list of RT35xx based devices. Signed-off-by:
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Helmut Schaa authored
This allows the compiler to perform the necessary bitfield calculations during compile time instead of run time and thus reduces the number of instructions to run during each tasklet invocation. This should improve performance in the RX hotpath. This comes at the cost of a slight increase in the module size (for example rt2800pci): Before: text data bss dec hex filename 14133 832 4 14969 3a79 drivers/net/wireless/rt2x00/rt2800pci.ko After: text data bss dec hex filename 14149 832 4 14985 3a89 drivers/net/wireless/rt2x00/rt2800pci.ko Signed-off-by:
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Ivo van Doorn authored
When powersaving is enabled, assocaition times are very high (for WPA2 networks, the time can easily be around the 3 seconds). This is caused, because the flushing of the queues takes too much time. Without the flushing callback mac80211 assumes a timeout of 100ms while scanning. Limit all flush waiting loops to the same maximum. We can apply this maximum by passing the drop status to the driver, which makes sure the driver performs extra actions during the waiting for the queue to become empty. After these changes, association times fall within the healthy range of ~0.6 seconds with powersaving enabled. The difference between association time between powersaving enabled and disabled is now only ~0.1 second (which can also be due to the measuring method). Signed-off-by:
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Johannes Stezenbach authored
TX status is reported by the hardware when a packet has been sent (or after TX failed after possible retries), which is some time after the DMA completion. Since the rt2800usb hardware can not signal interrupts we have to use a timer, otherwise the TX status would only be read by the next packet's TX DMA completion, or by the watchdog thread. Signed-off-by:
Johannes Stezenbach <js@sig21.net> Signed-off-by:
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Johannes Stezenbach authored
The watchdog just triggers rt2800usb_work_txdone() when it detects a TX status timeout, thus rt2800usb_work_txdone() needs to handle this case. Signed-off-by:
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Johannes Stezenbach authored
Add a timestamp to each queue entry which is updated whenever the status of the entry changes, and remove the per-queue timestamps. The previous check was incorrect and caused both false positives and false negatives. With the corrected check it comes apparent that the TX status usually times out on rt2800usb unless there is sufficient traffic (i.e. the next TX will complete the previous TX status). Signed-off-by:
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Johannes Stezenbach authored
Trying to fix the "TX status report missed" warnings by reading the TX_STA_FIFO entries as quickly as possible. The TX_STA_FIFO is too small in hardware, thus reading it only from the workqueue is too slow and entries get lost. Start an asynchronous read of the TX_STA_FIFO directly from the TX URB completion callback (atomic context, thus it cannot use the blocking rt2800_register_read()). If the async read returns a valid FIFO entry, it is pushed into a larger FIFO inside struct rt2x00_dev, until rt2800_txdone() picks it up. A .tx_dma_done callback is added to struct rt2x00lib_ops to trigger the async read from the URB completion callback. Signed-off-by:
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Helmut Schaa authored
Use TXOP_HTTXOP for beacons to stay in sync with the legacy drivers. Signed-off-by:
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Helmut Schaa authored
Bring the TX_SW_CFG2 initialisation for rt305x devices in sync with the ralink legacy drivers. Signed-off-by:
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Helmut Schaa authored
This seems to fix problems with some powersaving clients since a positive value in TBTT_SYNC_CFG_TBTT_ADJUST introduces beacon skew, which is not wanted in AP mode. Also update the rest of the TBTT_SYNC config according to the legacy drivers in AP mode. Signed-off-by:
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Helmut Schaa authored
Allow passing a void pointer to rt2x00_queue_entry_for_each which in turn in provided to the callback function. Furthermore, allow the callback function to stop processing by returning true. And also notify the caller of rt2x00_queue_entry_for_each if the loop was canceled by the callback. No functional changes, just preparation for an upcoming patch. Signed-off-by:
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Ivo van Doorn authored
The number of flags defined for the rt2x00dev->flags field, has been growing over the years. Currently we are approaching the maximum number of bits which are available in the field. A secondary problem, is that one part of the field are initialized only during boot, because the driver requirements are initialized or device requirements are loaded from the EEPROM. In both cases, the flags are fixed and will not change during device operation. The other flags are the device state, and will change frequently. So far this resulted in the fact that for some flags, the atomic bit accessors are used, while for the others the non-atomic variants are used. By splitting the flags up into a "flags" and "cap_flags" we can put all flags which are fixed inside "cap_flags". This field can then be read non-atomically. In the "flags" field we keep the device state, which is going to be read atomically. This adds more room for more flags in the future, and sanitizes the field access methods. Signed-off-by:
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Helmut Schaa authored
Since commit 0b7fde54 "rt2x00: Protect queue control with mutex" rt2x00 used rt2x00queue_pause_queue for stopping a tx queue in mac80211. But in case of a failure in the tx path rt2x00 still called ieee80211_stop_queue which stopped the queue but prevented rt2x00queue_unpause_queue to wake the queue up again resulting in a stuck tx queue. Fix this by also using rt2x00queue_pause_queue in case of tx failures. Signed-off-by:
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Layne Edwards authored
This patch adds WLAN LED support to the mac80211 rt2x00 driver for Ralink SoC (rt305x) devices. The current WLAN LED drivers in rt2800lib.c set the LED brightness via an MCU request, but do nothing for SoC. This patch checks for SoC and sets the register to enable the WLAN LED (instead of an MCU request). This enables the WLAN LED for RT305x devices. Signed-off-by:
Layne Edwards <ledwards@astrumtech.net> Signed-off-by:
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- Apr 12, 2011
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Mark Davis authored
Adds USB IDs for seven previously missing devices. Additionally, all instances of 'Conceptronic' have been replaced by the OEM name. Devices added are.. 0411:01a2 - Buffalo WLI-UC-GNM, RT3070V 0586:341e - ZyXEL NWD2105, RT3070 13b1:002f - Linksys AE1000, RT3572 13b1:0031 - Cisco / Linksys AM10, RT3072 14b2:3c2c - Keebox W150NU / Alpha Networks WUS-N12, RT3070 157e:3013 - TRENDnet TEW-645UB, RT2770+RT2720 15a9:0012 - Airlink AWLL7025 / Gemtek WUBR-208N, RT2870+RT2850 Signed-off-by:
Mark Davis <marked86@gmail.com> Acked-by:
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- Apr 07, 2011
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Michal Marek authored
The kernel already prints its build timestamp during boot, no need to repeat it in random drivers and produce different object files each time. Signed-off-by:
Michal Marek <mmarek@suse.cz> Acked-by:
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Xose Vazquez Perez authored
based on the Ralink drivers: W = Windows_ralink_driver L = Linux_ralink_driver USB_IDs W_73 W_2500 L_73 L_2500 ============= ==== ====== ==== ====== 0x050d,0x7050 - - - YES 0x050d,0x705a - - YES - 0x1371,0x9022 - YES YES - 0x148f,0x2573 YES - YES - Signed-off-by:
Xose Vazquez Perez <xose.vazquez@gmail.com> Acked-by:
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- Apr 04, 2011
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Helmut Schaa authored
We already tell mac80211 to stop the queue when we hit a certain threshold. Hence, it shouldn't happen at all that a frame gets queued for tx on a full queue. Add an error message for this case. Signed-off-by:
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Helmut Schaa authored
Some clients seem to rely upon the reception of BlockAckReqs to flush their rx reorder buffer. In order to fix aggregation for these clients rt2x00 should send a BlockAckReq if the transmission of an AMPDU subframe fails. Introduce a new flag TXDONE_AMPDU to indicate that this is an AMPDU subframe and pass IEEE80211_TX_STAT_AMPDU_NO_BACK to mac80211 if an AMPDU subframe failed during transmission. This fixes aggregation problems with Intel 5100 Windows STAs (and maybe others as well). Signed-off-by:
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Ivo van Doorn authored
Add new USB ID Signed-off-by:
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Helmut Schaa authored
For STBC transmissions rt2x00 used the number of RxSTBC streams the destination STA indicates in its HT capabilities as STBC value in the TXWI. However, the legacy drivers and our own comment in rt2800.h suggest that the STBC field in the TXWI only allows a value of 0 or 1. The values 2 and 3 are reserved (probably for future devices). And indeed, STBC transmissions to STAs indicating more then 1 RxSTBC stream fail when the STBC field is set to something >1. Fix this by only setting the STBC field to 1 when STBC should be used. Signed-off-by:
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Helmut Schaa authored
rt2800 devices should adjust their tx power in accordance with the eeproms temperature calibration values. Add a new driver callback gain_calibration that is called every 4 seconds. The rt2800 gain calibration routine simply runs the tx power configuration that takes care of calculating the temperature compensation delta. We don't need to synchronize the calls to rt2800_config_txpower as they should all happen from mac80211's single threaded workqueue. Signed-off-by:
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Helmut Schaa authored
Since commit d1c3a37c ("mac80211: clarify alignment docs, fix up alignment") removed the requirement for a 4-byte aligned payload rt2x00queue_align_payload is obsolete as mac80211 will align the payload when it passes the frame to the net stack. As a result we can remove the call to rt2x00queue_align_payload in the rx path and since that's the last user we can remove rt2x00queue_align_payload altogether. One advantage is that we save some alignment operations for frames that don't need to be aligned (for example beause they are not passed to the net stack). Signed-off-by:
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