- 16 Aug, 2010 40 commits
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Ivo van Doorn authored
rt2x00 was keeping a copy of ieee80211_rx_status embedded into the rt2x00_dev structure. For each RX frame, this structure was copied into the skb->cb where mac80211 would handle it further. However at the moment only the fields current band, and frequency were updated. Whereas the band was already provided directly within the rt2x00_dev structure. Save a memcpy action, and reduce memory a bit, by adding a curr_freq field to rt2x00_dev, and completely remove the ieee80211_rx_status structure from rt2x00_dev. Signed-off-by:
Ivo van Doorn <IvDoorn@gmail.com> Acked-by:
Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Helmut Schaa authored
Add some comments about the TXWI fields and the TX_STA_FIFO register. Especially describe the relationship between the TXWI field PACKETID and the PID field in the TX_STA_FIFO register. Signed-off-by:
Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by:
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Ivo van Doorn authored
The TX_STA_FIFO register which is used for per-frame TX frame status reporting is also valid on rt2800usb. We can move the rt2800pci_txdone function into rt2800lib where it can also be used by rt2800usb. rt2800usb needs to overwrite the txdone work handler to a different function. Both rt2800usb as rt2800_txdone need to take into account that IO failures can occur while uploading the URB, which means that when obtaining the new entry the IO status must be checked. Signed-off-by:
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Ivo van Doorn authored
The only reason why the write_tx_data callback function is needed inside the driver, is because the location of the TXWI descriptor is different on PCI and USB hardware. Except for the beacon, where the TXWI is always at the start of the SKB buffer. In both cases the drivers write_tx_data function only wrap around the function rt2800_write_txwi. Move write_tx_data completely into the rt2800lib library, and add a callback function to obtain the TXWI pointer. Signed-off-by:
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Ivo van Doorn authored
At some points, some drivers can't report the full TX status information. This can happen for the UNKNOWN state, or the FAILURE state (in case the URB failed). Add a wrapper function to simplify reporting the empty TX information. Signed-off-by:
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Ivo van Doorn authored
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Ivo van Doorn authored
Move all TX and RX completion handling into a work structure, which is handeled on the mac80211 workqueue. This simplifies the code in rt2x00lib since it no longer needs to check if the device is USB or PCI to decide which mac80211 function should be used. In the watchdog some changes are needed since it can no longer rely on the TX completion function to be run while looping through the entries. (Both functions now work on the same workqueue, so this would deadlock). So the watchdog now waits for the URB to return, and handle the TX status report directly. As a side-effect, the debugfs entry for the RX queue now correctly displays the positions of the INDEX and INDEX_DONE counters. This also implies that it is not possible to perform checks like queue_empty() and queue_full() on the RX queue. Signed-off-by:
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Luis R. Rodriguez authored
Use ath9k_cmn_get_hw_crypto_keytype() instead which is already exported and shared, and does exactly the same thing. Reported-by:
Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by:
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Julia Lawall authored
Outdent the code following the if. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable braces4@ position p1,p2; statement S1,S2; @@ ( if (...) { ... } | if (...) S1@p1 S2@p2 ) @script:python@ p1 << r.p1; p2 << r.p2; @@ if (p1[0].column == p2[0].column): cocci.print_main("branch",p1) cocci.print_secs("after",p2) // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Acked-by:
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Julia Lawall authored
Indent the branch of an if. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable braces4@ position p1,p2; statement S1,S2; @@ ( if (...) { ... } | if (...) S1@p1 S2@p2 ) @script:python@ p1 << r.p1; p2 << r.p2; @@ if (p1[0].column == p2[0].column): cocci.print_main("branch",p1) cocci.print_secs("after",p2) // </smpl> Signed-off-by:
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Julia Lawall authored
At the point of the patched code, err has already been tested, so it is only worthwhile to test it again in the if branches where it is changed. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable braces4@ position p1,p2; statement S1,S2; @@ ( if (...) { ... } | if (...) S1@p1 S2@p2 ) @script:python@ p1 << r.p1; p2 << r.p2; @@ if (p1[0].column == p2[0].column): cocci.print_main("branch",p1) cocci.print_secs("after",p2) // </smpl> Signed-off-by:
Dan Williams <dcbw@redhat.com> Signed-off-by:
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Johannes Berg authored
Enable using network namespaces with wireless devices even when sysfs is enabled using the same infrastructure that was built for netdevs. Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Acked-by:
"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Johannes Berg authored
Sometimes drivers have more information than the stack about how their antennas/chains are used, and may require that the SM PS mode be changed. This could happen, for example, when detecting that the user disconnected an antenna. Thus this patch introduces API to allow drivers to request SM PS mode changes. Signed-off-by:
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Johannes Berg authored
Sometimes we don't just need to know whether or not the device is idle, but also per interface. This adds that reporting capability to mac80211. Signed-off-by:
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Andrea Gelmini authored
"userpace" -> "userspace" Signed-off-by:
Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by:
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Johannes Berg authored
When an AP sends a deauth frame, or we send one to an AP, that only means we lost our connection if we were actually connected to that AP. Check this to avoid sending spurious "disconnected" events and breaking "iw ... link" reporting. Signed-off-by:
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Christian Lamparter authored
This patch introduces a new timer, which will release queued-up MPDUs from the reorder buffer, whenever they've waited for more than HT_RX_REORDER_BUF_TIMEOUT (which is at around 100 ms). The advantage of having a dedicated timer, instead of relying on a constant stream of freshly arriving aMPDUs to release the old ones, is particularly observable when even a small fraction of MPDUs are forever lost at low network speeds. Previously under these circumstances frames would become stuck in the reorder buffer and the network stack of both HT peers throttled back, instead of revving up and gunning the pipes. Signed-off-by:
Christian Lamparter <chunkeey@googlemail.com> Signed-off-by:
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Christian Lamparter authored
This patch removes a few stale parameters and variables which survived the last, large rx-path reorganization: "mac80211: correctly place aMPDU RX reorder code" Signed-off-by:
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Christian Lamparter authored
This patch takes the reorder logic from the RX path and moves it into separate routines to make the expired frame release accessible. Signed-off-by:
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Felix Fietkau authored
When the noise floor limits are being bypassed because of strong interference, sensitivity is also reduced. In order to recover from this as quickly as possible, trigger a long periodic calibration every second instead of every 30 seconds, until the NF median is within limits again. This is especially important if the interference lasts for a while, since it takes multiple clean NF calibrations to bring the median back to normal. Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
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Felix Fietkau authored
When beacons get stuck in AP mode, the most likely cause is interference. Such interference can often go on for a while, and too many consecutive beacon misses can lead to connected clients getting dropped. Since connected clients might not be subjected to the same interference if that happens to be very local, the AP should try to deal with it as good as it can. One way to do this is to trigger an NF calibration with automatic baseband update right after the beacon miss. In my tests with very strong interference, this allowed the AP to continue transmitting beacons after only 2-3 misses, which allows a normal client to stay connected. With some of the newer - really sensitive - chips, the maximum noise floor limit is very low, which can be problematic during very strong interference. To avoid an endless loop of stuck beacons -> nfcal -> periodic calibration -> stuck beacons, the beacon miss event also sets a flag, which allows the calibration code to bypass the chip specific maximum NF value. This flag is automatically cleared, as soon as the first NF median goes back below the limits for all chains. In my tests, this allowed an ath9k AP to survive very strong interference (measured NF: -68, or sometimes even higher) without losing connectivity to its clients. Even under these conditions, I was able to transmit several mbits/s through the interface. Signed-off-by:
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Felix Fietkau authored
Signed-off-by:
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Felix Fietkau authored
Stuck beacons are a useful indicator for debugging various PHY issues such as calibration. Putting them on the same debug level as the other beacon stuff makes it hard to spot them in huge amounts of spam. Signed-off-by:
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Ben Hutchings authored
ieee80211_add_key() currently returns -ENOMEM in case of any error, including a missing crypto algorithm. Change ieee80211_key_alloc() and ieee80211_aes_{key_setup_encrypt,cmac_key_setup}() to encode errors with ERR_PTR() rather than returning NULL, and change ieee80211_add_key() accordingly. Compile-tested only. Reported-by:Marcin Owsiany <porridge@debian.org> Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Acked-by:
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Johannes Berg authored
Only the IBSS manager, ie. the station that sent the IBSS beacon last, should be replying to probe responses. This requires implementing the mac80211 tx_last_beacon callback, which we can do thanks to the ucode beacon notification. Signed-off-by:
Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by:
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Wey-Yi Guy authored
iwl_set_hw_params() only used by _agn, make it static Signed-off-by:
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Wey-Yi Guy authored
Log the information after reading the PCI_REVISION_ID from pci config space, Signed-off-by:
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Wey-Yi Guy authored
iwl_hw_detect() only used by _agn, make it static Signed-off-by:
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Thomas Klute authored
Split some long lines to make checkpatch.pl happy. ;-) Signed-off-by:
Thomas Klute <thomas2.klute@uni-dortmund.de> Signed-off-by:
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Thomas Klute authored
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Johannes Berg authored
Having both scan and work mutexes is not just a bit too fine grained, it also creates issues when there's code that needs both since they then need to be acquired in the right order, which can be hard to do. Therefore, use just a single mutex for both. Signed-off-by:
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Stanislaw Gruszka authored
We do not need export iwl_bg.*scan.*() functions just for initialize workqueue in other module. Making that functions static helps with iwl-scan.c code review a bit. Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by:
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Johannes Berg authored
Frames that failed PLCP error checks are most likely microwave transmissions (well, maybe not ...) and don't have a proper rate detected, so ignore it. Signed-off-by:
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Dan Williams authored
Bring back the comment about FW v5 status codes from the pre-cfg80211 driver, and let through status codes that aren't remapped by the firmware. Signed-off-by:
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Dan Williams authored
Make it a bit easier to debug scan results in the future. Signed-off-by:
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Luis R. Rodriguez authored
This helps us debug channel changes better. Signed-off-by:
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Felix Fietkau authored
When running in client mode and associating to an AP, the channel change is usually performed with the offchannel flag still set. However after the assoc is complete, the following channel change event is suppressed because the run time channel is already set to the operating channel. Fix this by sending channel change notifications to the driver even if only the offchannel flag changes. Signed-off-by:
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John W. Linville authored
This function was exiting early if the existing diversity settings were unchanged. Unfortunately, in some cases the antenna configuration is not initialized at all. https://bugzilla.kernel.org/show_bug.cgi?id=14751Signed-off-by:
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John W. Linville authored
...and unregistration to core shutdown. Previously, the driver remained registered even when the hardware was shutdown. That causes the driver to return -ENODEV if the b43 device is IFF_DOWN. This change causes the driver to disappear in that case, allowing /dev/hwrng to still function if another hwrng device is available. Signed-off-by:
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