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* b43: Add key memory dumpingMichael Buesch2008-12-193-2/+53
| | | | | | | | | This adds an option to dump all crypto related memory to the kernel log. Obviously, it should not be enabled on productive systems. ;) Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Suspend MAC while killing the radioMichael Buesch2008-12-191-0/+2
| | | | | | | | | We should suspend the MAC, before we kill the radio. This gives the MAC a chance to leave any TX/RX state and it avoids races on the PHY/RADIO registers. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath5k: correct packet length in tx descriptorsBob Copeland2008-12-193-6/+11
| | | | | | | | | | | | | | | Packet length calculation (which includes frame check sequence) should take into account whether we add a pad field or not. Extract the calculation into a helper and use it in both places. Changes to desc.c Changes-licensed-under: ISC Changes to ath5k.h, base.c Changes-licensed-under: 3-Clause-BSD Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* b43: Fix some MAC lockingMichael Buesch2008-12-193-44/+30
| | | | | | | | | This fixes some locking w.r.t. the lower MAC (firmware). It also removes a lot of ancient IRQ-locking that's not needed anymore. We simply suspend the MAC. That's easier and causes less trouble. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: iwl-tx.c cleanup (remove unused parameter and unused local variable).Rami Rosen2008-12-191-5/+3
| | | | | | | | | | | | This patch removes unused parameter and unused local variable in methods in iwl-tx.c: - Remove a parameter (is_unicast) from iwl_tx_cmd_build_basic(). - Remove an unused variable name unicast from iwl_tx_skb(). Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fixed RX decryption status reportingJouni Malinen2008-12-191-14/+12
| | | | | | | | | | | | | | | | | | The RX code in ath9k uses sc_keymap to figure out whether a default key was used. However, the default key entries in sc_keymap were always set and as such, frames could have been claimed to be decrypted by hardware when they were not. This can cause problems especially with TKIP since mac80211 is validating the Michael MIC in the frame and this will result in MIC failure and potentially TKIP countermeasures if the frame was not decrypted correctly. Change key cache slot allocation to mark only the keys that really have been used in sc_keymap to avoid the issue. The key cache slot selection routines are now internally avoiding the slots that may be needed for TKIP group keys. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix key cache slot selection for splitmicJouni Malinen2008-12-191-2/+2
| | | | | | | | | ath_reserve_key_cache_slot() was obviously supposed to return an index to a free slot, not reserved one. This could have caused problems with hardware revisions that use splitmic. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Protect config() callback with a mutexSujith2008-12-192-0/+6
| | | | | | | This should fix the timeout issues seen when using wpa_supplicant. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* p54usb: bring first generation devices back to lifeChristian Lamparter2008-12-191-2/+4
| | | | | | | | | | This patch fixes a serious regression (introduced by: "p54: fix memory management") that affected isl3886+net2280 usb devices operation. Signed-off-by: Christian Lamparter <chunkeey@web.de> Tested-by: Artur Skawina <art.08.09@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Key cache allocation for AP modeJouni Malinen2008-12-191-68/+132
| | | | | | | | Enhance allocation of key cache entries to support multiple pairwise keys to fix AP mode with more than one associated STA. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix a NULL pointer dereference in ath_rate_getJouni Malinen2008-12-191-1/+2
| | | | | | | | | It looks like mac80211 may try to send unicast frames to a STA that does not have a STA entry. We need to make sure that that is caught in the rate control code before dereferencing STA data. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: indicate txpower is off in sysfsJay Sternberg2008-12-191-1/+5
| | | | | | | | | | | The patch checks if the radio is disabled before displaying the tx power level. Previously when the txpower was set off show_tx_power still returned the prior power level. Now it will indicate the power has been turned off. Signed-off-by: Jay Sternberg <jay.e.sternberg@linux.intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: use GFP_KERNEL to allocate Rx SKB memoryZhu Yi2008-12-192-21/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously we allocate Rx SKB with GFP_ATOMIC flag. This is because we need to hold a spinlock to protect the two rx_used and rx_free lists operation in the rxq. spin_lock(); ... element = rxq->rx_used.next; element->skb = alloc_skb(..., GFP_ATOMIC); list_del(element); list_add_tail(&element->list, &rxq->rx_free); ... spin_unlock(); After spliting the rx_used delete and rx_free insert into two operations, we don't require the skb allocation in an atomic context any more (the function itself is scheduled in a workqueue). spin_lock(); ... element = rxq->rx_used.next; list_del(element); ... spin_unlock(); ... element->skb = alloc_skb(..., GFP_KERNEL); ... spin_lock() ... list_add_tail(&element->list, &rxq->rx_free); ... spin_unlock(); This patch should fix the "iwlagn: Can not allocate SKB buffers" warning we see recently. Signed-off-by: Zhu Yi <yi.zhu@intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: use meaningful vars in _iwl_poll_bit()Wu, Fengguang2008-12-191-5/+6
| | | | | | | | Rename vars in _iwl_poll_bit() to better reflect the truth. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove useless gotoWu Fengguang2008-12-192-12/+4
| | | | | | | | The patch removes some useless goto in code cleanup. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: use type uint for module param debugWu, Fengguang2008-12-194-5/+5
| | | | | | | | This enables one to change the debug level at bit 31. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: update comments on the debug interfaceWu, Fengguang2008-12-192-11/+8
| | | | | | | | | Bring up-to-date some comments on the location of debug files. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: add line feed to printkWu, Fengguang2008-12-191-1/+1
| | | | | | | | This adds line feed to printk. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: cleanup iwl-dev.hWinkler, Tomas2008-12-194-32/+14
| | | | | | | | The patch removes unused definition and moves code to proper places. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove a parameter (dest) from *_fill_beacon_frame() methods.Rami Rosen2008-12-194-6/+3
| | | | | | | | This patch removes a parameter (dest) from iwl_fill_beacon_frame() (iwl-agn.c) and from iwl3945_fill_beacon_frame(). (iwl-3945.c,iwl-3945.h) Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Move rate control alg register/unregister to appropriate placeVasanthakumar Thiagarajan2008-12-191-16/+14
| | | | | | | | This patch makes sure the rate control alg is registered/unregistered only once for this module. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Synchronize DMA transfer with CPU at right placeVasanthakumar Thiagarajan2008-12-191-4/+10
| | | | | | | | This patch does pci_dma_sync_single_for_cpu() before accessing the header of the frame and queueing the same buffer into h/w. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Remove MAC header pad before reporting TX statusJouni Malinen2008-12-191-0/+12
| | | | | | | | | | | Remove the possible MAC header pad before reporting TX status to mac80211. This pad is hardware specific operation and should not be exposed outside the driver. This fixes the frame body in monitor interfaces that could be used to check on TX status for transmitted frames. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Fix TX status reporting for retries and MCS indexJouni Malinen2008-12-191-1/+9
| | | | | | | | | | | | The count field in struct ieee80211_tx_rate does not include the final successful attempt, so only report retries here. Fix the struct ieee80211_tx_rate::idx field when MCS was used. It is supposed to be the MCS index, not an internal index to the rate control algorithm table. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rtl8187: Fix crash on unload when using SLUB debugHerton Ronaldo Krzesinski2008-12-191-8/+4
| | | | | | | | | | | | | | | | | Reported-by: Hin-Tak Leung <htl10@users.sourceforge.net> After the code was modified to use urb anchors ("rtl8187: Use usb anchor facilities to manage urbs"), rtl8187 began generating an intermittent GPF on shutdown when using SLUB with debugging enabled. Furthermore, rebooting the system with a ping running caused a GPF every time. There are two problems: (1) incorrect locking in the rtl8187_rx_cb() routine, a pre-existing bug that apparently had not been triggered before, and (2) duplicate freeing of receive skbs that was probably introduced with the change to anchors. Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Tested-by: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* p54: remove free_on_tx parameterChristian Lamparter2008-12-195-51/+37
| | | | | | | | | | | | This patch simplifies the tx code a bit and will be necessary for the upcoming stlc45xx<->p54 port. In detail: we no longer have to tell all back-end drivers directly, if we want to free a frame right after it was send to the firmware, or if we do it in the library callback later. Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* p54: more accurate rssi to dBm conversionChristian Lamparter2008-12-193-26/+68
| | | | | | | | This patch replaces the static rssi auto calibration data with more precise values out of the device's eeprom. Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rtl8187: Fix error returnsLarry Finger2008-12-191-2/+2
| | | | | | | | | There are two places in the rtl8187 code where a routine was returning zero (OK) when it should have been returning an error. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Acked-by: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* libertas: use roundup instead of opencodingIlpo Järvinen2008-12-191-1/+2
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* p54: update ACK failure statistic counter in real-timeChristian Lamparter2008-12-191-0/+1
| | | | | Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* p54: move statistic timer update routine into a workqueueChristian Lamparter2008-12-193-46/+68
| | | | | | | | | | | | | | This patch moves a good chunk of code from the former statistic update timer routine into a workqueue, which is kindly provided by mac80211. Also as a nice side-effect we can lay the foundation for other essential housekeeping features we want to do in the future. e.g: - drain the (clogged) tx_queue. - initiate bursts. Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlagn: fix agn rate scalingMohamed Abbas2008-12-191-10/+16
| | | | | | | | | | | | | Rate scaling in agn can be broken because of these two problems 1- the LQ command could not sent, we try to call LQ command before post association will be rejected, this will cause the driver to break in rs_tx_status reporting initial rate does not match. 2- In rs_rate_init we can get a value of 12, rate 60, for last_txrate_idx, this rate only valid in SISO/MIMO mode only Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath5k: fix 802.11 header padding on RX, unpadding on TXBenoit PAPILLAULT2008-12-191-17/+21
| | | | | | | | | | Padding the 802.11 header to a multiple of 4 bytes needs to be done only for frames with a body. This fixes a bug where 2 bytes were missing in monitor mode for ACK frames. Inspired by a patch from Jouni Malinen on ath9k. Ref: http://bugzilla.kernel.org/show_bug.cgi?id=12101 : Signed-off-by: Benoit Papillault <benoit.papillault@free.fr> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Report HT rates in RX statusJouni Malinen2008-12-191-35/+26
| | | | | | | | | | Fix and clean up the RX status reporting by getting rid of code that used internal rate tables and ratekbps calculation. The correct value is now reported with MCS index instead of the old mechanism that defaulted to using the highest legacy rate. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Do not use association state to update rate tableSujith2008-12-191-2/+1
| | | | | | | | | | Now that HT information is made available to the driver through config() callback, the channel type can be calculated whenever setting the channel. Update the rate table accordingly with the new channel type. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Fix HT channel selectionSujith2008-12-193-103/+44
| | | | | | | | | | | | | HT management is done differently for AP and STA modes, unify to just the ->config() callback since HT is fundamentally a PHY property and cannot be per-BSS. Rename enum nl80211_sec_chan_offset as nl80211_channel_type to denote the channel type ( NO_HT, HT20, HT40+, HT40- ). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* netdevice zd1201: Use after freeWang Chen2008-12-181-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 3d29b0c33d431ecc69ec778f8c236d382f59a85f | Author: John W. Linville <linville@tuxdriver.com> | Date: Fri Oct 31 14:13:12 2008 -0400 | | netdevice zd1201: Convert directly reference of netdev->priv to netdev_priv() | | We have some reasons to kill netdev->priv: | 1. netdev->priv is equal to netdev_priv(). | 2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously | netdev_priv() is more flexible than netdev->priv. | But we cann't kill netdev->priv, because so many drivers reference to it | directly. | | OK, becasue Dave S. Miller said, "every direct netdev->priv usage is a bug", | and I want to kill netdev->priv later, I decided to convert all the direct | reference of netdev->priv first. | | (Original patch posted by Wang Chen <wangchen@cn.fujitsu.com> w/ above | changelog but using dev->ml_priv. That doesn't seem appropriate | to me for this driver, so I've revamped it to use netdev_priv() | instead. -- JWL) This commit changed the allocation of netdev, but didn't change the free method of it. This causes "zd" be used after the memory, which is pointed by "zd", being freed by free_netdev(). Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* iwlwifi: add contact email to MODULE_AUTHORTomas Winkler2008-12-124-3/+5
| | | | | | Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove 4965 from common uCode API structuresTomas Winkler2008-12-125-42/+42
| | | | | | | | | | This patch removes 4965 from common uCode API structures. Also updates iwlagn commands with 3945 specific RX command in preparation for 3945 port. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove includes of iwl-helpers.h where not neededTomas Winkler2008-12-127-9/+4
| | | | | | | | | This patch removes includes of iwl-helpers.h where not needed Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: remove unused clip_groups priv memberTomas Winkler2008-12-122-16/+0
| | | | | | | | | | | | Remove clip_groups from priv and related structure. This code is for 3945 only and was renamed to 4965 in when code was split. Also remove unused RATE definitions Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: fix resume while txpower offMohamed Abbas2008-12-122-1/+14
| | | | | | | | | This patch take care of coming out rfkill when the driver is up while rfkill is on by restarting interface. Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: use iwl_poll_direct_bit in EEPROM readingZhu, Yi2008-12-125-37/+27
| | | | | | | | | The patch replaces the current reading EEPROM loop iterations with iwl_poll_direct_bit(). It also fixes some comment error. Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Do not remove header padding on RX from short framesJouni Malinen2008-12-121-2/+10
| | | | | | | | | | | | The 802.11 header is only padded to 32-bit boundary when the frame has a non-zero length payload. In other words, control frames (e.g., ACK) do not have a padding and we should not try to remove it. This fixes monitor mode for short control frames. In addition, the hdrlen&3 use is described in more detail to make it easier to understand how the padding length is calculated. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: fix build warning (iwl-rx.c)Rami Rosen2008-12-121-6/+0
| | | | | | | | | | | | This patch fixes the following build warning when CONFIG_IWLWIFI_DEBUG is not set. /work/src/wireless-testing/drivers/net/wireless/iwlwifi/iwl-rx.c:758: warning: 'iwl_dbg_report_frame' defined but not used Signed-off-by: Rami Rosen <ramirose@gmail.com> Acked-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* libertas: Create sysfs entry for changing the mesh probe response limitAnna Neal2008-12-122-0/+61
| | | | | | | | | | | | This patch adds the ability to change the number of probe response retries sent by the mesh interface. In dense networks it is recommended to change this value to zero to reduce traffic congestion. Signed-off-by: Anna Neal <anna@cozybit.com> Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ath9k: Refactor struct ath_softcSujith2008-12-125-267/+254
| | | | | | | | Split ath_softc into smaller structures for rx, tx and beacon handling. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* p54: fix oops on faulty devicesChristian Lamparter2008-12-121-3/+16
| | | | | | | | | | | This patch fixes an oops when the devices suddenly starts to receive martian data frames. bug reference: http://marc.info/?l=linux-wireless&m=122872280317635&w=2 Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Disable requests for new scans in AP modeJouni Malinen2008-12-122-17/+0
| | | | | | | | | | | | | | | | | | | | | | | | AP mode operations are seriously affected if mac80211 runs through a multi-second scan while the AP is trying to send Beacon frames on the operation channel. While this could be implemented in a way that does not cause too many problems, it is not very simple and will require synchronization with Beacon frame scheduling in the drivers (scan one channel at a time between Beacon frames). Furthermore, such scanning takes quite a bit longer time and existing userspace applications would be likely to timeout while waiting for the results. For now, just refuse requests for new scans (SIOCSIWSCAN) when in AP mode. In practice, this moves the rejection from iwl* drivers into mac80211 to make it apply to every mac80211-based driver. This issue shows up in associated stations getting disconnected when something (e.g., Network Manager) requests a scan while the interface is in AP mode. When doing this continuously (e.g., NM does it every 120 seconds), the network gets close to useless. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* ipw2200: fix scanning while associatedHelmut Schaa2008-12-122-6/+23
| | | | | | | | | | | | | | | | | | | | | | | This patch fixes sporadic firmware restarts when scanning while associated. The firmware will quietly cancel a scan (while associated) if the dwell time for a channel to be scanned is larger than the time it may stay away from the operating channel (because of DTIM catching). Unfortunately the driver is not notified about the canceled scan and therefore the scan watchdog timeout will be hit and the driver causes a firmware restart which results in disassociation. This mainly happens on passive channels which use a dwell time of 120 whereas a typical beacon interval is around 100. The patch changes the dwell time for passive channels to be slightly smaller than the actual beacon interval to work around the firmware issue. Furthermore the number of allowed beacon misses is increased from one to three as otherwise most scans (while associated) won't complete successfully. However scanning while associated will still fail in corner cases such as a beacon intervals below 30. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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