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2011-11-30mac80211: revert on-channel work optimisationsJohannes Berg1-91/+8
The on-channel work optimisations have caused a number of issues, and the code is unfortunately very complex and almost impossible to follow. Instead of attempting to put in more workarounds let's just remove those optimisations, we can work on them again later, after we change the whole auth/assoc design. This should fix rate_control_send_low() warnings, see RH bug 731365. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-21mac80211: Support ht-cap over-rides.Ben Greear1-4/+12
This implements ht-cap over-rides for mac80211 drivers. HT may be disabled, making an /a/b/g/n station act like an a/b/g station. HT40 may be disabled forcing the station to be HT20 even if the AP and local hardware support HT40. MAX-AMSDU may be disabled. AMPDU-Density may be increased. AMPDU-Factor may be decreased. This has been successfully tested with ath9k using patched wpa_supplicant and iw. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-09mac80211: simplify ieee80211_work_workStanislaw Gruszka1-14/+3
Since local->tmp_channel is always NULL in one branch, some code paths will newer be taken in that branch, so remove them. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-09Merge branch 'master' of ↵John W. Linville1-4/+3
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2011-11-08mac80211: Add HT helper functionsAlexander Simon1-28/+1
Some refactoring for IBSS HT. Move HT info and capability IEs building code into separate functions. Add function to get the channel type from an HT info IE. Signed-off-by: Alexander Simon <an.alexsimon@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-02mac80211: config hw when going back on-channelEliad Peller1-2/+1
When going back on-channel, we should reconfigure the hw iff the hardware is not already configured to the operational channel. Signed-off-by: Eliad Peller <eliad@wizery.com> Cc: stable@kernel.org # 2.6.39+ Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-02mac80211: fix remain_off_channel regressionEliad Peller1-2/+2
The offchannel code is currently broken - we should remain_off_channel if the work was started, and the work's channel and channel_type are the same as local->tmp_channel and local->tmp_channel_type. However, if wk->chan_type and local->tmp_channel_type coexist (e.g. have the same channel type), we won't remain_off_channel. This behavior was introduced by commit da2fd1f ("mac80211: Allow work items to use existing channel type.") Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Eliad Peller <eliad@wizery.com> Cc: stable@kernel.org # 2.6.39+ Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-11mac80211: fix offchannel TX cookie matchingJohannes Berg1-1/+1
When I introduced in-kernel off-channel TX I introduced a bug -- the work can't be canceled again because the code clear the skb pointer. Fix this by keeping track separately of whether TX status has already been reported. Cc: stable@kernel.org [2.6.38+] Reported-by: Jouni Malinen <j@w1.fi> Tested-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27mac80211: Send the management frame at requested rateRajkumar Manoharan1-1/+1
Whenever the scan request or tx_mgmt is requesting not to use CCK rate for managemet frames through NL80211_ATTR_TX_NO_CCK_RATE attribute, then mac80211 should select appropriate least non-CCK rate. This could help to send P2P probes and P2P action frames at non 11b rates without diabling 11b rates globally. Cc: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13mac80211: Remove unnecessary OOM logging messagesJoe Perches1-4/+2
Removing unnecessary messages saves code and text. Site specific OOM messages are duplications of a generic MM out of memory message and aren't really useful, so just delete them. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-20mac80211: sync driver before TXJohannes Berg1-0/+25
In P2P client mode, the GO (AP) to connect to might have periods of time where it is not available due to powersave. To allow the driver to sync with it and send frames to the GO only when it is available add a new callback tx_sync (and the corresponding finish_tx_sync). These callbacks can sleep unlike the actual TX. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-19mac80211: implement scan supported ratesJohannes Berg1-1/+2
Scanning currently uses the TX rate mask to restrict the rate set, which is bogus. Make it use the new set of rates from userspace. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-27mac80211: Drop DS Channel PARAM in directed probePaul Stewart1-1/+1
Do not send DS Channel parameter for directed probe requests in order to maximize the chance that we get a response. Some badly-behaved APs don't respond when this parameter is included. Signed-off-by: Paul Stewart <pstew@chromium.org> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6Linus Torvalds1-4/+2
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1446 commits) macvlan: fix panic if lowerdev in a bond tg3: Add braces around 5906 workaround. tg3: Fix NETIF_F_LOOPBACK error macvlan: remove one synchronize_rcu() call networking: NET_CLS_ROUTE4 depends on INET irda: Fix error propagation in ircomm_lmp_connect_response() irda: Kill set but unused variable 'bytes' in irlan_check_command_param() irda: Kill set but unused variable 'clen' in ircomm_connect_indication() rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport() be2net: Kill set but unused variable 'req' in lancer_fw_download() irda: Kill set but unused vars 'saddr' and 'daddr' in irlan_provider_connect_indication() atl1c: atl1c_resume() is only used when CONFIG_PM_SLEEP is defined. rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer(). rxrpc: Kill set but unused variable 'local' in rxrpc_UDP_error_handler() rxrpc: Kill set but unused variable 'sp' in rxrpc_process_connection() rxrpc: Kill set but unused variable 'sp' in rxrpc_rotate_tx_window() pkt_sched: Kill set but unused variable 'protocol' in tc_classify() isdn: capi: Use pr_debug() instead of ifdefs. tg3: Update version to 3.119 tg3: Apply rx_discards fix to 5719/5720 ... Fix up trivial conflicts in arch/x86/Kconfig and net/mac80211/agg-tx.c as per Davem.
2011-05-07net/mac80211,rcu: convert call_rcu(work_free_rcu) to kfree_rcu()Lai Jiangshan1-9/+1
The rcu callback work_free_rcu() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(work_free_rcu). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: "John W. Linville" <linville@tuxdriver.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2011-04-26mac80211: Fix warnings due to -Wunused-but-set-variableRajkumar Manoharan1-4/+2
These warnings are exposed by gcc 4.6. net/mac80211/sta_info.c: In function 'sta_info_cleanup_expire_buffered': net/mac80211/sta_info.c:590:32: warning: variable 'sdata' set but not used net/mac80211/ibss.c: In function 'ieee80211_rx_mgmt_auth_ibss': net/mac80211/ibss.c:43:34: warning: variable 'status_code' set but not used net/mac80211/work.c: In function 'ieee80211_send_assoc': net/mac80211/work.c:203:9: warning: variable 'len' set but not used net/mac80211/tx.c: In function '__ieee80211_parse_tx_radiotap': net/mac80211/tx.c:1039:35: warning: variable 'sband' set but not used net/mac80211/mesh.c: In function 'ieee80211_mesh_rx_queued_mgmt': net/mac80211/mesh.c:616:28: warning: variable 'ifmsh' set but not used ... Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-03-07mac80211: remove unused macrosShan Wei1-1/+0
Compile test only. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-18mac80211: fix 2.4 GHz 40 MHz disablingJohannes Berg1-6/+0
The module parameter ieee80211_disable_40mhz_24ghz was meant to allow disabling 40 MHz operation in the 2.4 GHz band by default. However, it is buggy as implemented because while it advertises to the AP that the device doesn't support 40 MHz, it will itself still use 40 MHz configurations. To fix this, clear the 40 MHz bits from the sband completely instead of overriding where used. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-09mac80211: Allow work items to use existing channel type.Ben Greear1-3/+50
Narrow channel types can function within larger channel types. So, use existing channel type for work items when possible. This decreases hardware channel changes significantly when using non NO_HT channel types on the operating channel. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-04mac80211: Optimize scans on current operating channel.Ben Greear1-11/+55
This should decrease un-necessary flushes, on/off channel work, and channel changes in cases where the only scanned channel is the current operating channel. * Removes SCAN_OFF_CHANNEL flag, uses SDATA_STATE_OFFCHANNEL and is-scanning flags instead. * Add helper method to determine if we are currently configured for the operating channel. * Do no blindly go off/on channel in work.c Instead, only call appropriate on/off code when we really need to change channels. Always enable offchannel-ps mode when starting work, and disable it when we are done. * Consolidate ieee80211_offchannel_stop_station and ieee80211_offchannel_stop_beaconing, call it ieee80211_offchannel_stop_vifs instead. * Accept non-beacon frames when scanning on operating channel. * Scan state machine optimized to minimize on/off channel transitions. Also, when going on-channel, go ahead and re-enable beaconing. We're going to be there for 200ms, so seems like some useful beaconing could happen. Always enable offchannel-ps mode when starting software scan, and disable it when we are done. * Grab local->mtx earlier in __ieee80211_scan_completed_finish so that we are protected when calling hw_config(), etc. * Pass probe-responses up the stack if scanning on local channel, so that mlme can take a look. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-12-17Merge branch 'master' of ↵David S. Miller1-1/+4
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/bnx2x/bnx2x.h drivers/net/wireless/iwlwifi/iwl-1000.c drivers/net/wireless/iwlwifi/iwl-6000.c drivers/net/wireless/iwlwifi/iwl-core.h drivers/vhost/vhost.c
2010-12-13mac80211: avoid calling ieee80211_work_work unconditionallyHerton Ronaldo Krzesinski1-1/+4
On suspend, there might be usb wireless drivers which wrongly trigger the warning in ieee80211_work_work. If an usb driver doesn't have a suspend hook, the usb stack will disconnect the device. On disconnect, a mac80211 driver calls ieee80211_unregister_hw, which calls dev_close, which calls ieee80211_stop, and in the end calls ieee80211_work_purge-> ieee80211_work_work. The problem is that this call to ieee80211_work_purge comes after mac80211 is suspended, triggering the warning even when we don't have work queued in work_list (the expected case when already suspended), because it always calls ieee80211_work_work. So, just call ieee80211_work_work in ieee80211_work_purge if we really have to abort work. This addresses the warning reported at https://bugzilla.kernel.org/show_bug.cgi?id=24402 Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-12-08mac80211: Show max number of probe tries in debug message.Ben Greear1-2/+3
Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-11-29mac80211: implement off-channel mgmt TXJohannes Berg1-0/+22
This implements the new off-channel TX API in mac80211 with a new work item type. The operation doesn't add a new work item when we're on the right channel and there's no wait time so that for example p2p probe responses will be transmitted without delay. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-16mac80211: per interface idle notificationJohannes Berg1-4/+4
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: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-16mac80211: unify scan and work mutexesJohannes Berg1-20/+15
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: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-29mac80211: allow drivers to request DTIM periodJohannes Berg1-0/+43
Some features require knowing the DTIM period before associating. This implements the ability to wait for a beacon in mac80211 before assoc to provide this value. It is optional since most likely not all drivers will need this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-17Merge branch 'master' of ↵John W. Linville1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 Conflicts: net/mac80211/mlme.c
2010-06-16mac80211: fix warn, enum may be used uninitializedChristoph Fritz1-1/+1
regression introduced by b8d92c9c141ee3dc9b3537b1f0ffb4a54ea8d9b2 In function ‘ieee80211_work_rx_queued_mgmt’: warning: ‘rma’ may be used uninitialized in this function this re-adds default value WORK_ACT_NONE back to rma Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-02wireless: fix several minor description typosWalter Goldens1-1/+1
Signed-off-by: Walter Goldens <goldenstranger@yahoo.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-17Merge branch 'master' of ↵John W. Linville1-2/+25
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2010-05-17Merge branch 'master' of ↵John W. Linville1-2/+25
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2010-05-12mac80211: don't process work item with wrong frameJohannes Berg1-2/+25
When we process a frame, we currently just match it to the work struct by the MAC addresses, and not by the work type. This means that we can end up doing the work for an association request item when (for whatever reason) we receive another frame type, for example a probe response. Processing the wrong type of frame will lead to completely invalid data being processed, and will lead to various problems like thinking the association was successful even if the AP never sent an assocation response. Fix this by making each processing function check that it is invoked for the right work struct type only and continue processing otherwise (and drop frames that we didn't expect). This bug was uncovered during the debugging for https://bugzilla.kernel.org/show_bug.cgi?id=15862 but doesn't seem to be the cause for any of the various problems reported there. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-05Merge branch 'master' of ↵John W. Linville1-9/+19
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: drivers/net/wireless/libertas_tf/cmd.c drivers/net/wireless/libertas_tf/main.c
2010-04-28mac80211: fix supported rates IE if AP doesn't give us it's ratesStanislaw Gruszka1-9/+19
If AP do not provide us supported rates before assiociation, send all rates we are supporting instead of empty information element. v1 -> v2: Add comment. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-15Merge branch 'master' of ↵John W. Linville1-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: Documentation/feature-removal-schedule.txt drivers/net/wireless/ath/ath5k/phy.c drivers/net/wireless/wl12xx/wl1271_main.c
2010-04-09mac80211: check whether scan is in progress before queueing scan_workTeemu Paasikivi1-1/+6
As scan_work is queued from work_work it needs to be checked if scan has been started during execution of work_work. Otherwise, when hw scan is used, the stack gets error about hw being busy with ongoing scan. This causes the stack to abort scan without notifying the driver about it. This leads to a situation where the hw is scanning and the stack thinks it's not. Then when the scan finishes, the stack will complain by warnings. Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo1-0/+1
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-02-26mac80211: fix direct probe loop on ieee80211_work_purgeJuuso Oikarinen1-0/+1
If authentication has already been performed when the WLAN interface is stopped, (sometimes) the ieee80211_work_purge would corrupt some ieee80211_work-structures. The outcome is this (cleaned up): [ 2252.398681] WARNING: at net/mac80211/work.c:995 ieee80211_work_purge [ 2252.466430] Backtrace: [ 2252.529266] (ieee80211_work_purge+0x0/0xcc [mac80211]) [ 2252.546875] (ieee80211_stop+0x0/0x4c0 [mac80211]) Additionally, one would get this, going on regarless of the WLAN interface state, going on forever: [ 2252.859985] wlan0: direct probe to 00:90:4c:60:04:00 (try -996717525) [ 2253.055419] wlan0: direct probe to 00:90:4c:60:04:00 (try -996717524) [ 2253.250610] wlan0: direct probe to 00:90:4c:60:04:00 (try -996717523) [ 2253.446014] wlan0: direct probe to 00:90:4c:60:04:00 (try -996717522) [ 2253.641357] wlan0: direct probe to 00:90:4c:60:04:00 (try -996717521) Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-25mac80211: track work started through callbacksJohannes Berg1-7/+10
Currently, the remain_on_channel work callback needs to track in its own data structure whether the work was just started or not. By reordering some code this becomes unnecessary, the generic wk->started variable can still be 'false' on the first invocation and only be 'true' on actual timeout invocations, so that the extra variable can be removed. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-25mac80211: fix WARN_ON in the new work codeFelix Fietkau1-2/+0
ieee80211_work_rx_mgmt currently enqueues various management frames, including deauth and disassoc frames, however the function ieee80211_work_rx_queued_mgmt does not handle these, as they should only occur if the AP is buggy. It does emit a WARN_ON when this happens though, and several users have reported such instances. Fix the WARN_ON by not queueing such frames in the first place. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12mac80211: add debugfs interface for U-APSD queue configurationKalle Valo1-2/+2
Because it's not yet decided how to configure which queues are U-APSD enabled, add a debugfs interface for testing purposes. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12mac80211: add U-APSD client supportKalle Valo1-2/+10
Add Unscheduled Automatic Power-Save Delivery (U-APSD) client support. The idea is that the data frames from the client trigger AP to send the buffered frames with ACs which have U-APSD enabled. This decreases latency and makes it possible to save even more power. Driver needs to use IEEE80211_HW_UAPSD to enable the feature. The current implementation assumes that firmware takes care of the wakeup and hardware needing IEEE80211_HW_PS_NULLFUNC_STACK is not yet supported. Tested with wl1251 on a Nokia N900 and Cisco Aironet 1231G AP and running various test traffic with ping. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-12mac80211: fix a few work bugsJohannes Berg1-0/+4
Kalle and Lennert reported problems with the new work code, and at least Kalle's problem I was able to trace to a missing jiffies initialisation. I also ran into a problem where occasionally I couldn't connect, which seems fixed with kicking the work items after scanning. Finally, also add some sanity checking code to verify that we're not adding work items while an interface is down -- that case could lead to something similar to what Lennert was seeing. There still seems to be a race condition that we're trying to figure out separately. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Tested-by: Lennert Buytenhek <buytenh@marvell.com> Tested-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-05mac80211: fix a warning related to pointer conversion to u64 cookieKalle Valo1-6/+6
On a 32 bit system (in this case an omap 3430 system) gcc warned about pointer conversion: net/mac80211/work.c: In function 'ieee80211_remain_on_channel_timeout': net/mac80211/work.c:534: warning: cast from pointer to integer of different size net/mac80211/work.c: In function 'ieee80211_remain_done': net/mac80211/work.c:1030: warning: cast from pointer to integer of different size net/mac80211/work.c: In function 'ieee80211_wk_remain_on_channel': net/mac80211/work.c:1056: warning: cast from pointer to integer of different size net/mac80211/work.c: In function 'ieee80211_wk_cancel_remain_on_channel': net/mac80211/work.c:1072: warning: cast from pointer to integer of different size Fix it by casting the pointers to unsigned long instead. This makes the compiler happy again. Compile-tested only. Cc: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28mac80211: remove requeue from workJohannes Berg1-18/+0
There's no need to be requeueing the work struct since we check for the scan after removing items due to possible timeouts. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28mac80211: make off-channel work genericJohannes Berg1-54/+81
This changes mac80211 to allow being off-channel for any type of work, not just the 'remain-on-channel' work. This also helps fast transition to a BSS on a different channel. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28mac80211: support remain-on-channel commandJohannes Berg1-4/+130
This implements the new remain-on-channel cfg80211 command in mac80211, extending the work interface. Also change the work purge code to be able to clean up events properly (pretending they timed out.) Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28mac80211: proper bss private data handlingJohannes Berg1-2/+1
cfg80211 offers private data for each BSS struct, which mac80211 uses. However, mac80211 uses internal and external (cfg80211) BSS pointers interchangeably and has a hack to put the cfg80211 bss struct into the private struct. Remove this hack, properly converting between the pointers wherever necessary. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-12-28mac80211: split up and insert custom IEs correctlyJohannes Berg1-7/+36
Currently, we insert all user-specified IEs before the HT IE for association, and after the HT IE for probe requests. For association, that's correct only if the user-specified IEs are RSN only, incorrect in all other cases including WPA. Change this to split apart the user-specified IEs in two places for association: before the HT IE (e.g. RSN), after the HT IE (generally empty right now I think?) and after WMM (all other vendor-specific IEs). For probes, split the IEs in different places to be correct according to the spec. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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