- Jul 29, 2009
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Johannes Berg authored
When enqueuing packets on the internal packet queue, we need to ensure that we have a valid vif pointer since that is required since the net namespace work. Add some assertions to verify this, but also don't crash is for some reason we don't end up with a vif pointer -- warn and drop the packet in all these cases. Since this code touches a number of hotpaths, it is intended to be temporary, or maybe configurable in the future, at least the bit that is in the path that gets hit for every packet, ieee80211_tx_pending(). Signed-off-by:
Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Johannes Berg authored
When trying to disassociate while not associated, the kernel would crash rather than refusing the operation, fix this; Reported-by:
Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by:
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Sujith authored
Location: ath9k/phy#/xmit Signed-off-by:
Sujith <Sujith.Manoharan@atheros.com> Signed-off-by:
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Helmut Schaa authored
Fix an oops in ieee80211_scan_state_set_channel which was triggered if the last scanned channel was skipped (for example due to regulatory restrictions) by returning to the decision state after each skipped channel. Signed-off-by:
Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by:
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Johannes Berg authored
Jouni and Maxim reported an oops when using wpa_supplicant -Dnl80211, which seems to be due to random data being contained in the crypto settings for the assoc() command. This seems to be due to the missing memset here, so add it -- it's certainly missing but I'm not 100% certain that it will fix the problem. Signed-off-by:
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Gabor Juhos authored
We are using setpower routines regardless of the current power mode. Don't bother the hardware, if it is not necessary. Changes-licensed-under: ISC Signed-off-by:
Gabor Juhos <juhosg@openwrt.org> Signed-off-by:
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Gabor Juhos authored
There is a small window where the mac80211 changes the IEEE80211_CONF_PS flag, and then informs the driver about the change. We have a race condition if we are checking the flag in the same time. Avoid it by introducing a local variable, and using that instead of checking the IEEE80211_CONF_PS flag directly. This fix the problem reported by Luis: http://article.gmane.org/gmane.linux.kernel.wireless.general/34363 Changes-licensed-under: ISC Signed-off-by:
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Alexander Beregalov authored
Fix this build error when CONFIG_AR9170_LEDS is not set drivers/net/wireless/ath/ar9170/main.c:1296: error: 'struct ar9170' has no member named 'led_work' Signed-off-by:
Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by:
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John W. Linville authored
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Johannes Berg authored
Marcel reported a warning, which quite obviously comes from an oversight in the code handling deauth frames, and which resulted in multiple follow-up warnings due to this missing handling. This patch adds the missing deauth handling (telling cfg80211 about it) and also removes the follow-up warnings since they could happen due to races even if nothing is wrong. I've explained the races in the comments. Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Tested-by:
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Johannes Berg authored
Luis reported this lockdep complaint, that he had also reported earlier but when trying to analyse I had been locking at the wrong code, and never saw the problem: (slightly abridged) ======================================================= [ INFO: possible circular locking dependency detected ] 2.6.31-rc4-wl #6 ------------------------------------------------------- wpa_supplicant/3799 is trying to acquire lock: (cfg80211_mutex){+.+.+.}, at: [<ffffffffa009246a>] cfg80211_get_dev_from_ifindex+0x1a/0x90 [cfg80211] but task is already holding lock: (rtnl_mutex){+.+.+.}, at: [<ffffffff81400ff2>] rtnl_lock+0x12/0x20 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (rtnl_mutex){+.+.+.}: [<ffffffff810857b6>] __lock_acquire+0xd76/0x12b0 [<ffffffff81085dd3>] lock_acquire+0xe3/0x120 [<ffffffff814ee7a4>] mutex_lock_nested+0x44/0x350 [<ffffffff81400ff2>] rtnl_lock+0x12/0x20 [<ffffffffa009f6a5>] nl80211_send_reg_change_event+0x1f5/0x2a0 [cfg80211] [<ffffffffa009529e>] set_regdom+0x28e/0x4c0 [cfg80211] -> #0 (cfg80211_mutex){+.+.+.}: [<ffffffff8108587b>] __lock_acquire+0xe3b/0x12b0 [<ffffffff81085dd3>] lock_acquire+0xe3/0x120 [<ffffffff814ee7a4>] mutex_lock_nested+0x44/0x350 [<ffffffffa009246a>] cfg80211_get_dev_from_ifindex+0x1a/0x90 [cfg80211] [<ffffffffa009813f>] get_rdev_dev_by_info_ifindex+0x6f/0xa0 [cfg80211] [<ffffffffa009b12b>] nl80211_set_interface+0x3b/0x260 [cfg80211] When looking at the correct code, the problem is quite obvious. I'm not entirely sure which code paths lead here, so until I can analyse it better let's just use RCU to avoid the problem. Signed-off-by: -
Reinette Chatre authored
C [M] drivers/net/wireless/iwlwifi/iwl-core.o drivers/net/wireless/iwlwifi/iwl-core.c:1341: warning: ‘iwl_dump_nic_error_log’ defined but not used Reported-by:
Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by:
Reinette Chatre <reinette.chatre@intel.com> Signed-off-by:
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Reinette Chatre authored
Commit "iwlwifi: Handle new firmware file with ucode build number in header" introduced new ucode header parsing routines, but neglected to initialize these routines for 1000. The system thus goes into infinite loop trying to load ucode, failing every time with a null pointer exception as it tries to parse the header. Signed-off-by:
Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by:
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- Jul 27, 2009
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Pavel Machek authored
IWLWIFI_LEDS option should certainly have help comment, and should default to y. Signed-off-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
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Wey-Yi Guy authored
Fix incorrect name for HT MPDU Density. default set to 4 uSec Reported-by:
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Reinette Chatre authored
This data is more useful to debugging that the receive buffer contents. Signed-off-by:
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Johannes Berg authored
No existing callbacks use anything other than the return value 1, which means that the caller should free the reply skb, so it seems safer in terms of not introducing memory leaks to simply remove the return value and let the caller always free the skb. Signed-off-by:
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Johannes Berg authored
The current command sending in iwlwifi is a bit of a mess: 1) there is a struct, iwl_cmd, that contains both driver and device data in a single packed structure -- this is very confusing 2) the on-stack data and the command metadata share a structure by embedding the latter in the former, which is also rather confusing because it leads to weird unions and similarly odd constructs 3) each txq always has enough space for 256 commands, even if only 32 end up being used This patch fixes these things: 1) rename iwl_cmd to iwl_device_cmd and keep track of command metadata and device command separately, in two arrays in each tx queue 2) remove the 'meta' member from iwl_host_cmd and only put in the required members 3) allocate the cmd/meta arrays separately instead of embedding them into the txq structure Signed-off-by: -
Wey-Yi Guy authored
Add debugfs function to display current thermal throttling status for both Legacy and Advance Thermal Throttling Management Signed-off-by:
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Wey-Yi Guy authored
Part 2 of Thermal Throttling Management - Thermal Throttling feature is used to put NIC into low power state when driver detect the Radio temperature reach pre-defined threshold Two Thermal Throttling Management Methods; this patch introduce the Advance Thermal Throttling: TI-0: system power index, no tx/rx restriction, HT enabled TI-1: power index 5, 1 spatial stream Tx, multiple spatial stream Rx, HT enabled TI-2: power index 5: 1 spatial stream Tx, 1 spatial stream Rx, HT disabled TI-CT-KILL: power index 5, no Tx, no Rx, HT disabled For advance Thermal Throttling, CT_KILL_ENTER threshold and CT_KILL_EXIT threshold are different; uCode will not stay awake until reach CT_KILL_EXIT threshold. Signed-off-by:
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Wey-Yi Guy authored
Part 1 of Thermal Throttling Management - Thermal Throttling feature is used to put NIC into low power state when driver detect the Radio temperature reach pre-defined threshold Two Thermal Throttling Management Methods; this patch introduce the Legacy Thermal Management: IWL_TI_0: normal temperature, system power state IWL_TI_1: high temperature detect, low power state IWL_TI_2: higher temperature detected, lower power state IWL_TI_CT_KILL: critical temperature detected, lowest power state Once get into CT_KILL state, uCode go into sleep, driver will stop all the active queues, then move to IWL_TI_CT_KILL state; also set up 5 seconds timer to toggle CSR flag, uCode wake up upon CSR flag change, then measure the temperature. If temperature is above CT_KILL exit threshold, uCode go backto sleep; if temperature is below CT_KILL exit threshold, uCode send Card State Notification response with appropriate CT_KILL status flag, and uCode remain awake, Driver receive Card State Notification Response and update the card temperature to the CT_KILL exit threshold. Signed-off-by:
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Wey-Yi Guy authored
If advance thermal throttling is used the driver need to pass both "enter" and "exit" temperature to uCode. Using different critical temperature threshold for legacy and advance thermal throttling management based on the type of thermal throttling method is used except 1000. For 1000, it use advance thermal throttling critical temperature threshold, but with legacy thermal management implementation until ucode has the necessary implementations in place. Signed-off-by:
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Wey-Yi Guy authored
When performing rate scaling, if detected that the new rate index is invalid, clear the search_better_tbl flag so it will not be stuck in the loop. Since the search table is already set up in uCode, we need to empty out the the search table; revert back to the "active" rate and throughput info. Also pass the "active" table setup to uCode to make sure the rate scale is functioning correctly. Signed-off-by:
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Luis R. Rodriguez authored
This was caused by patch: "mac80211: cooperate more with network namespaces" The version of the patch applied doesn't match Johannes' latest: http://johannes.sipsolutions.net/patches/kernel/all/LATEST/NNN-mac80211-netns.patch The skb->cb virtual interface data wasn't being reset for reuse so ath9k pooped out when trying to dereference the private rate control info from the skb. BUG: unable to handle kernel NULL pointer dereference RIP: 0010:[<ffffffffa0258173>] ath_tx_rc_status+0x33/0x150 [ath9k] <-- snip etc --> Reported-by:
Davide Pesavento <davidepesa@gmail.com> Signed-off-by:
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Vivek Natarajan authored
Signed-off-by:
Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by:
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Johannes Berg authored
When a station queries us for a PS-poll response, we wrongly queue the frame on the virtual interface's queue rather than the pending queue. Additionally, fix a race condition where we could potentially send multiple frames to the sleeping station due to using a station flag rather than a packet flag. When converting to a packet flag, we can also convert p54 and remove the filter clearing we added for it. (Also remove a now dead function) Signed-off-by:
Bob Copeland <me@bobcopeland.com> Tested-by:
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Luis R. Rodriguez authored
We were issuing probe requests to the associated AP on the wrong band by having our beacon timer loss trigger while we are scanning. When we would scan the timer could hit and force us to send a probe request to the AP but with a chance we'd be on the wrong band. This leads to finding no usable bitrate but we should not get so far on the xmit path. We should not be trying to send these probe request frames so prevent ieee80211_mgd_probe_ap() from sending these. As it turns out all callers of ieee80211_mgd_probe_ap() need this check so we just move the scan check there. This means we can remove the recenlty added check during ieee80211_sta_monitor_work(). Additionally we now fix a race condition added by the patch "mac80211: do not monitor the connection while scanning" which had the same check in ieee80211_sta_conn_mon_timer(). The race happens because the timer routine *does* a valid check for scanning but after it queues work into the mac80211 workqueue the work callback can kick off with scanning enabled and cause the same issue we were trying to avoid. The more appropriate solution would be to disable the respective timers during scan and re-enable them after scan but requires more complex code and testing. Cc: Christian Lamparter <chunkeey@web.de> Cc: Larry Finger <Larry.Finger@lwfinger.net> Reported-by:
Fabio Rossi <rossi.f@inwind.it> Signed-off-by:
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Johannes Berg authored
When a new MLME work is created, its timeout is initialised to 0. This is wrong, it could then be thought of as having an actual timeout in the future (time_is_after_jiffies() can return true). Instead, it should be initialised to jiffies so that it will run right away as soon as the mlme work is executed. Signed-off-by:
Luciano Roth Coelho <luciano.coelho@nokia.com> Reported-by:
Alban Browaeys <prahal@yahoo.com> Signed-off-by:
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Helmut Schaa authored
Using background scanning in mac80211 the time a scan needs to finish can exceed 10 seconds. Hence, increase the scan results expire time to 15 seconds which should be sufficient. Signed-off-by:
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Helmut Schaa authored
Rename scan_state to next_scan_state to better reflect what it is used for. Signed-off-by:
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Helmut Schaa authored
Introduce a new scan flag "SCAN_OFF_CHANNEL" which basically tells us that we are currently on a different channel for scanning and cannot RX/TX. "SCAN_SW_SCANNING" tells us that we are currently running a software scan but we might as well be on the operating channel to RX/TX. While "SCAN_SW_SCANNING" is set during the whole scan "SCAN_OFF_CHANNEL" is set when leaving the operating channel and unset when coming back. Introduce two new scan states "SCAN_LEAVE_OPER_CHANNEL" and "SCAN_ENTER_OPER_CHANNEL" which basically implement the functionality we need to leave the operating channel (send a nullfunc to the AP and stop the queues) and enter it again (send a nullfunc to the AP and start the queues again). Enhance the scan state "SCAN_DECISION" to switch back to the operating channel after each scanned channel. In the future it sould be simple to enhance the decision state to scan as much channels in a row as the qos latency allows us. Signed-off-by:
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Helmut Schaa authored
Use a bitfield to store the current scan mode instead of two boolean variables {sw,hw}_scanning. This patch does not introduce functional changes but allows us to enhance the scan flags later (for example for background scanning). Signed-off-by: -
Helmut Schaa authored
Introduce a new scan state "decision" which is entered after every completed scan operation and decides about the next steps. At first the decision is in any case to scan the next channel. This shouldn't introduce any functional changes. Signed-off-by:
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Helmut Schaa authored
Instead of queueing the scan work again without delay just process the next state immediately. Signed-off-by:
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Helmut Schaa authored
Move the processing of each scan state into its own functions for better readability. This patch does not introduce functional changes. Signed-off-by:
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Sujith authored
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Sujith authored
Cleanup aggregation start/stop function interfaces. Signed-off-by:
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Sujith authored
These can be obtained from mac80211. Signed-off-by:
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Sujith authored
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Sujith authored
Update filename for debug information. Signed-off-by:
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