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* Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller2009-02-15
|\ | | | | | | | | | | Conflicts: drivers/net/wireless/iwlwifi/iwl-agn.c drivers/net/wireless/iwlwifi/iwl3945-base.c
| * mac80211: restrict to AP in outgoing interface heuristicJohannes Berg2009-02-11
| | | | | | | | | | | | | | | | | | | | | | | | We try to find the correct outgoing interface for injected frames based on the TA, but since this is a hack for hostapd 11w, restrict the heuristic to AP mode interfaces. At some point we'll add the ability to give an interface index in radiotap or so and just remove this heuristic again. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: stable@kernel.org [2.6.28.x] Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: split managed/ibss code a little moreJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | It appears that you can completely mess up mac80211 in IBSS mode by sending it a disassoc or deauth: it'll stop queues and do a lot more but not ever do anything again. Fix this by not handling all those frames in IBSS mode, Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: fix IBSS authJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | The code beyond this point is supposed to be used for non-IBSS (managed) mode only. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: calculate wstats_flags on the flyJohannes Berg2009-02-13
| | | | | | | | | | | | | | Just to make wext.c more self-contained. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: use cfg80211s BSS infrastructureJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | Remove all the code from mac80211 to keep track of BSSes and use the cfg80211-provided code completely. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: dont add BSS when creating IBSSJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | | | | | There's no need to create a BSS struct only to pass it to ieee80211_sta_join_ibss, so refactor this function into __ieee80211_sta_join_ibss which takes all the relevant paramters, and ieee80211_sta_join_ibss which takes a BSS struct (used when joining an IBSS that already has other members). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | cfg80211/nl80211: scanning (and mac80211 update to use it)Johannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | This patch adds basic scan capability to cfg80211/nl80211 and changes mac80211 to use it. The BSS list that cfg80211 maintains is made driver-accessible with a private area in each BSS struct, but mac80211 doesn't yet use it. That's another large project. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: further cleanups to stopping BA sessionsJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | Essentially consisting of passing the sta_info pointer around, instead of repeatedly doing hash lookups. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: RX aggregation: clean up stop sessionJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | Clean up the locking by splitting it into two functions, this will also enable further cleanups of stopping all sessions. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: clean up BA session teardownJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | The sta_info pointer can very well be passed to ieee80211_sta_tear_down_BA_sessions, this will later allow us to pass it through even further. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: fix aggregation timer lockupsJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As far as I can tell, there are possible lockups because both the RX session_timer and TX addba_resp_timer are del_timer_sync'ed under the sta spinlock which both timer functions take. Additionally, the TX agg code seems to leak memory when TX aggregation is not disabled before the sta_info is freed. Fix this by making the free code a little smarter in the RX agg case, and actually make the sta_info_destroy code free the TX agg info in the TX agg case. We won't notify the peer, but it'll notice something is wrong anyway, and normally this only happens after we've told it in some other way we will no longer talk to it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: fix race in TX aggregationJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | | | When disabling TX aggregation because it was rejected or from the timer (it was not accepted), there is a window where we first set the state to operation, unlock, and then undo the whole thing. Avoid that by splitting up the stop function. Also get rid of the pointless sta_info indirection in the timer. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: document TX aggregation (and small cleanup)Johannes Berg2009-02-13
| | | | | | | | | | | | | | | | Add documentation and move ieee80211_start_tx_ba_cb_irqsafe to right after ieee80211_start_tx_ba_cb. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: hardware should not deny going back to legacyJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | | | | | Doing so would be an MLME protocol violation when the peer disabled the aggregation session. Quick driver review indicates that there are error codes passed all over the drivers but cannot ever be nonzero except in error conditions that would indicate mac80211 bugs. No real changes here, since no drivers currently can return -EBUSY. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: restrict aggregation to supported interface modesJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | We can only support aggregation on AP/STA right now. HT isn't defined for IBSS, WDS or MESH. In the WDS/MESH cases it's not clear what to put into the IBSS field, and we don't handle that in the code at all. Also fix the code to handle VLAN correctly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: restructure HT codeJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | Create two new files, agg-tx.c and agg-rx.c to make it clearer which code is common (ht.c) and which is specific (agg-*.c). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: fix RX aggregation timeoutsJohannes Berg2009-02-13
| | | | | | | | | | | | | | The values are in TUs (1.024ms), not ms. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: remove stray aggregation debugfs definitionJohannes Berg2009-02-13
| | | | | | | | | | Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: remove bssid argument from prepare_for_handlersJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | It's a little confusing to get the BSSID outside the function and pass it in, when it's only needed for this function, so change that. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: fix beacon enable moreJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | Hopefully the last required fix ... disable beaconing only on beaconing interfaces, and thus avoid calling ieee80211_if_config for purely virtual interfaces (those driver doesn't know about). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: reject extra IEs for probe request when hw_scanJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | | | We cannot currently hand off extra IEs to hw_scan, so reject configuring extra IEs for probe request frames when hw_scan is set. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: properly validate/translate IW_AUTH_MFP valuesJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | Make sure nobody passes in bogus values, and translate the values (although it isn't necessary). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: disable IBSS beacon before joinJohannes Berg2009-02-13
| | | | | | | | | | | | | | | | | | Before we have a probe response frame (which is used as the beacon too) there's no need to ask drivers to beacon, they will not get a beacon anyway. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: use ps-poll when dynamic power save mode is disabledKalle Valo2009-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a directed tim bit is set, mac80211 currently disables power save ands sends a null frame to the AP. But if dynamic power save is disabled, mac80211 will not enable power save ever gain. Fix this by adding ps-poll functionality to mac80211. When a directed tim bit is set, mac80211 sends a ps-poll frame to the AP and checks for the more data bit in the returned data frames. Using ps-poll is slower than waking up with null frame, but it's saves more power in cases where the traffic is low. Userspace can control if either ps-poll or null wakeup method is used by enabling and disabling dynamic power save. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: remove multicast check from check_tim()Kalle Valo2009-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently mac80211 checks for the multicast tim bit from beacons, disables power save and sends a null frame if the bit is set. This was added to support ath9k. But this is a bit controversial because the AP will send multicast frames immediately after the beacon and the time constraints are really high. Relying mac80211 to be fast enough here might not be reliable in all situations. And there's no need to send a null frame, AP will send the frames immediately after the dtim beacon no matter what. Also if dynamic power save is disabled (iwconfig wlan0 power timeout 0) currently mac80211 disables power save whenever the multicast bit is set but it's never enabled again after receiving the first multicast/broadcast frame. The current implementation is not usable on p54/stlc45xx and the easiest way to fix this is to remove the multicast tim bit check altogether. Handling multicast tim bit in host is rare, most of the designs do this in firmware/hardware, so it's better not to have it in mac80211. It's a lot better to do this in firmware/hardware, or if that's not possible it could be done in the driver. Also renamed the function to ieee80211_check_tim() to follow the style of the file. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Fix the wrong WARN_ON message appearing on enabling power save.Vivek Natarajan2009-02-13
| | | | | | | | | | | | | | | | | | | | | | | | This issue happens only when we are associated with a 11n AP and power save is enabled. In the function 'ieee80211_master_start_xmit', ps_disable_work is queued where wake_queues is called. But before this work is executed, we check if the queues are stopped in _ieee80211_tx and return TX_AGAIN to ieee8011_tx which leads to the warning message. This patch fixes this erroneous case. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Free current bss information in few places where we don't need it ↵Vasanthakumar Thiagarajan2009-02-11
| | | | | | | | | | | | | | | | any more Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Remove bss information of the current AP when it goes out of rangeVasanthakumar Thiagarajan2009-02-09
| | | | | | | | | | | | | | | | There is no point having the bss information of currently associated AP when the AP is detected to be out of range. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: do not TX injected frames when not allowedLuis R. Rodriguez2009-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Monitor mode is able to TX by using injected frames. We should not allow injected frames to be sent unless allowed by regulatory rules. Since AP mode uses a monitor interfaces to transmit management frames we have to take care to not break AP mode as well while resolving this. We can deal with this by allowing compliant APs solutions to inform mac80211 if their monitor interface is intended to be used for an AP by setting a cfg80211 flag for the monitor interface. hostapd, for example, currently does its own checks to ensure AP mode is not used on channels which require radar detection. Once such solutions are available it can can add this flag for monitor interfaces. Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: convert master interface to netdev_opsJohannes Berg2009-02-09
| | | | | | | | | | | | | | | | | | | | Also call our own ieee80211_master_setup routine instead of overwriting almost all the values from ether_setup; this loses a few assignments that are pointless on the master interface anyway. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: convert to net_device_opsJohannes Berg2009-02-09
| | | | | | | | | | | | | | | | Convert to new net_device_ops in 2.6.28 and later. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: remove HW_SIGNAL_DBJohannes Berg2009-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | Giving the signal in dB isn't much more useful to userspace than giving the signal in unspecified units. This removes some radiotap information for zd1211 (the only driver using this flag), but it helps a lot for getting cfg80211-based scanning which won't support dB, and zd1211 being dB is a little fishy anyway. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Bruno Randolf <bruno@thinktube.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | wireless: replace uses of __constant_{endian}Harvey Harrison2009-02-09
| | | | | | | | | | | | | | The base versions handle constant folding now. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: IBSS join reworkAlina Friedrichsen2009-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I hold back this patch for around a week to avoid confusion. This is the second step of "mac80211: Fixed BSSID handling revisited". With it, in the situation of a strange merge to the same BSSID (e.g. caused by a TSF overflow) only reset_tsf() is called. And sta_info_flush_delayed() is only called if you change the network manually, not on an automatic BSSID merge. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Creating new IBSS with fixed BSSIDAlina Friedrichsen2009-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a bug when creating a new IBSS network with a fixed BSSID. The fixed BSSID situation is now with one of my last patches handled in ieee80211_sta_find_ibss() function. It's more robust to test against (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET), because ifsta->state is not seted right in every situation and so the creating of the new IBSS network sometimes hangs after the first try to scan for a network to merge. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Reset assoc_scan_tries after an unsuccessful scan runSujith2009-02-09
| | | | | | | | | | | | | | | | | | | | Trying to associate with a non-existent SSID stops the state machine after the first run. Subsequent association requests fail to start the scan engine. Fix this by resetting assoc_scan_tries to zero after completing a scan run. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Cancel the dynamic ps timer in ioctl_siwpower.Vivek Natarajan2009-01-30
| | | | | | | | | | | | | | | | | | If the dynamic power save timer has been started before the power save is disabled using iwconfig, we fail to cancel the timer. Hence cancel it while disabling power save. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: don't try to powersave/config disabled interfacesJohannes Berg2009-01-29
| | | | | | | | | | Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Generic TSF debuggingAlina Friedrichsen2009-01-29
| | | | | | | | | | | | | | This patch enables low-level driver independent debugging of the TSF and remove the driver specific things of ath5k and ath9k from the debugfs. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: add interface list lockJohannes Berg2009-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Using only the RTNL has a number of problems, most notably that ieee80211_iterate_active_interfaces() and other interface list traversals cannot be done from the internal workqueue because it needs to be flushed under the RTNL. This patch introduces a new mutex that protects the interface list against modifications. A more detailed explanation is part of the code change. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: flush workqueue a second time in suspend()Bob Copeland2009-01-29
| | | | | | | | | | | | | | | | | | Drivers can theoretically queue more work in one of their callbacks from mac80211 suspend, so let's flush it once more to be on the safe side, just before calling ->stop(). Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: change workqueue back to non-freezeableBob Copeland2009-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "mac80211: make workqueue freezable" made the mac80211 workqueue freezeable to prevent us from doing any work after the driver went away. This was fine before mac80211 had any suspend support. However, now we want to flush this workqueue in suspend(). Because the thread for a freezeable workqueue is stopped before the device class suspend() is called, flush_workqueue() will hang in the suspend-to-disk case. Converting it back to a non-freezeable queue will keep suspend from hanging. Moreover, since we flush the workqueue under RTNL and userspace is stopped, there won't be any new work in the workqueue until after resume. Thus we still don't have to worry about pinging the AP without hardware. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Fixed BSSID handling revisitedAlina Friedrichsen2009-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch cleanup the fixed BSSID handling, that ieee80211_sta_set_bssid() works like ieee80211_sta_set_ssid(). So that the BSSID is only a second selection criterion besides the SSID. This allows us to create new IBSS networks with fixed BSSIDs, which was broken before. In the second version of this patch the handling of the stupid merges to the same BSSID is moved out to get reworked into an other patch. And this version hopefully solves the problems with some low-level drivers and re-adds the config BSSID warning to help debugging the low-level drivers. Much thanks to all who have helped testing! :) Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Read the TSF via debugfsAlina Friedrichsen2009-01-29
| | | | | | | | | | | | | | This patch adds an low-level driver independent entry to read the TSF value into the debugfs of mac80211. This makes debugging the IBSS handling of wifi drivers easier. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: allow mac80211 drivers to get to struct ieee80211_hw from wiphyLuis R. Rodriguez2009-01-29
| | | | | | | | | | | | | | | | | | | | | | | | If a driver is given a wiphy and it wants to get to its private mac80211 driver area it can use wiphy_to_ieee80211_hw() to get first to its ieee80211_hw and then access the private structure via hw->priv. The wiphy_priv() is already being used internally by mac80211 and drivers should not use this. This can be helpful in a drivers reg_notifier(). Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Add capability to enable/disable beaconingJohannes Berg2009-01-29
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds a flag to notify drivers to start and stop beaconing when needed, for example, during a scan run. Based on Sujith's first patch to do the same, but now disables beaconing for all virtual interfaces while scanning, has a separate change flag and tracks user-space requests. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | wireless: restrict to 32 legacy ratesJohannes Berg2009-01-29
| | | | | | | | | | | | | | | | | | | | Since the standards only define 12 legacy rates, 32 is certainly a sane upper limit and we don't need to use u64 everywhere. Add sanity checking that no more than 32 rates are registered and change the variables to u32 throughout. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: constify ieee80211_if_conf.bssidJohannes Berg2009-01-29
| | | | | | | | | | | | | | | | Then one place can be a static const. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Fix MFP Association Comeback to use Timeout Interval IEJouni Malinen2009-01-29
| | | | | | | | | | | | | | | | | | | | The separate Association Comeback Time IE was removed from IEEE 802.11w and the Timeout Interval IE (from IEEE 802.11r) is used instead. The editing on this is still somewhat incomplete in IEEE 802.11w/D7.0, but still, the use of Timeout Interval IE is the expected mechanism. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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