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* Merge branch 'master' of ↵John W. Linville2012-01-057-52/+19
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/b43legacy/dma.c
| * mac80211: remove dead codeMohammed Shafi Shajakhan2012-01-042-19/+0
| | | | | | | | | | | | | | | | | | ieee80211_offchannel_enable_all_ps function is no longer used and looks like its logic is extensively handled in ieee80211_offchannel_stop_vifs Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: Call driver commands after drv_start in mac80211 restart codeYogesh Ashok Powar2012-01-041-10/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Ideally, hardware/firmware initialization is complete after the drv_start routine. In mac80211 restart code (ieee80211_reconfig), defer calling the driver commands i.e. setup fragmentation threshold, rts threshold and coverage class till drv_start routine is called. Signed-off-by: Nishant Sarmukadam <nishants@marvell.com> Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> v2: Removed extra blank line added. Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: use RCU read locks for sta_info_getMohammed Shafi Shajakhan2012-01-041-0/+2
| | | | | | | | | | | | | | | | | | this is being recently introduced by the commit a85e1d55974646a442d95911e3f7d7a891ea9ac5 Cc: Paul Stewart <pstew@google.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: fix kernel panic in IBSS due to a regressionMohammed Shafi Shajakhan2012-01-041-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kernel panic occurs when we create an IBSS mode and leave it for sometime without any joiner and this is introduced by the commit ec2b774e7c91094d8c00de579646f1162b87b01e where we don't put proper braces for 'list_for_each_entry_safe' and we pass an invalid 'sta' pointer to __sta_info_destroy EIP is at __list_add+0xe/0xa0 EAX: f3b63db4 EBX: 00000000 ECX: eab88c1c EDX: 00000000 ESI: 00000000 EDI: 00000246 EBP: f3b63d80 ESP: f3b63d58 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process kworker/u:2 (pid: 198, ti=f3b62000 task=f3afbea0 task.ti=f3b62000) Stack: 00000000 00000000 f9ef9821 00000000 00000000 eab88c30 f3b63d80 c017f623 eab88bf0 eab88bf0 f3b63dd0 c066f925 00000000 00000002 00000000 f9ef9821 f3b63da0 c0180a2b eab88c1c eab88c30 00000002 f3afbea0 eab88bf4 f3b63db4 Call Trace: [<f9ef9821>] ? __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<c017f623>] ? debug_mutex_add_waiter+0x23/0x60 [<c066f925>] __mutex_lock_common+0xd5/0x390 [<f9ef9821>] ? __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<c0180a2b>] ? trace_hardirqs_off+0xb/0x10 [<c066fd37>] mutex_lock_nested+0x47/0x60 [<f9ef9821>] ? __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<f9ef9821>] __ieee80211_stop_tx_ba_session+0x31/0x60 [mac80211] [<f9ef8989>] ieee80211_sta_tear_down_BA_sessions+0x39/0x60 [mac80211] [<f9ef1a67>] __sta_info_destroy+0x57/0x780 [mac80211] [<f9ef2223>] ieee80211_sta_expire+0x93/0xb0 [mac80211] [<f9efc8f6>] ieee80211_ibss_work+0x2d6/0x530 [mac80211] Cc: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: fix scan state machineMohammed Shafi Shajakhan2012-01-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | when we run high bandwidth UDP traffic and we trigger a scan, the scan state machine seems to be looping in SUSPEND->RESUME->DECISION->SUSPEND and SET_CHANNEL seems to be never called as 'tx_empty' is never true while running UDP traffic. fix this by settting SET_CHANNEL state when we get into RESUME state. Cc: Leela Kella <leela@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: always clear SDATA_STATE_OFFCHANNEL flagEliad Peller2012-01-041-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | If the vif is stopped while it is offchannel (e.g. right after p2p negotiation) the SDATA_STATE_OFFCHANNEL flag is never get cleared, resulting in various bad effects (e.g. GO can't start beaconing). Fix it by clearing the SDATA_STATE_OFFCHANNEL flag even if the vif is stopped. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: Remove superfluous ieee80211_rx_h_remove_qos_controlHelmut Schaa2012-01-041-20/+0
| | | | | | | | | | | | | | | | | | | | This seems to not serve any purpose anymore, at least all frame processing afterwards seems to be able to deal with QoS frames. So, let's save the expensive memmove and just leave the QoS header in the 802.11 frame for further processing. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | Merge branch 'master' of ↵John W. Linville2012-01-036-5/+111
|\| | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/b43/dma.c drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
| * mac80211: Keep skb->piority for relayed frames in AP modeHelmut Schaa2011-12-211-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When mac80211 relays a frame from STA1 to STA2 in AP mode it will get re-classified in the tx path. Unfortunately the frame protocol field is always set to ETH_P_8023 while the classification only kicks in for ETH_P_IP. Hence, a high priority frame from STA1 will be send to STA2 as best effort. Instead of running classification on the frame just use the same priority as STA1 did. Do this by adding 256 to the skb->priority to allow cfg80211_classify8021d to shortcut frame classification. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: ibss should not purge clients it is not responsible forMarek Lindner2011-12-211-0/+3
| | | | | | | | | | | | | | | | | | | | The IBSS merge code calls ieee80211_sta_expire() with a relatively short expire timeout that purges other clients prematurely. The expire function has to check that only the clients belonging to the vif in question are purged. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: Fixing sparse warning at sta_info.cYogesh Ashok Powar2011-12-191-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 42624d4913a00219a8fdbb4bafd634d1d843be85 created following sparse warning >net/mac80211/sta_info.c:965:24: warning: incorrect type in assignment (different address spaces) >net/mac80211/sta_info.c:965:24: expected struct tid_ampdu_tx *tid_tx >net/mac80211/sta_info.c:965:24: got struct tid_ampdu_tx [noderef] <asn:4>*<noident> Making use of rcu_dereference_protected to fix the problem. V2: - Replacing rcu_dereference with rcu_dereference_protected as suggested by Johannes. - Adding mutex_lock/unlock to satisfy the condition at rcu_dereference_protected Cc: Nishant Sarmukadam <nishants@marvell.com> Reported-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: handle SMPS action framesJohannes Berg2011-12-191-0/+58
| | | | | | | | | | | | | | | | | | | | When a peer changes SMPS state we should update rate control so it doesn't have to detect it by itself. It can't detect "dynamic" mode anyway since that just requires rts-cts handshaking. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * cfg80211: Return beacon loss count in stationPaul Stewart2011-12-193-1/+13
| | | | | | | | | | | | | | | | If station info contains a beacon loss count, return it to userspace. Signed-off-by: Paul Stewart <pstew@chromium.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: split addba retries in timeNikolay Martynov2011-12-192-1/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently code allows three (HT_AGG_MAX_RETRIES) unanswered addba requests. When this limit is reached aggregation is turned off for given TID permanently. This doesn't seem right: three requests is not that much, some 'blackout' can happen, but effect of it affects whole connection indefinitely. This patch increases number of retries to 15. Also, when there have been 3 or more retries it splits further retries apart by 15 seconds instead of sending them in very short period of time. Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | net: fix assignment of 0/1 to bool variables.Rusty Russell2011-12-202-3/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | DaveM said: Please, this kind of stuff rots forever and not using bool properly drives me crazy. Joe Perches <joe@perches.com> gave me the spatch script: @@ bool b; @@ -b = 0 +b = false @@ bool b; @@ -b = 1 +b = true I merely installed coccinelle, read the documentation and took credit. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: Fix power save in change interfaceMohammed Shafi Shajakhan2011-12-151-0/+1
| | | | | | | | | | we found that power save is not getting enabled when we do change interface in this order STA->IBSS->STA. this is because ieee80211_setup_sdata clears type-dependent union Reported-by: Leela Kella <leela@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: remove an unnecessary paraenthesisMohammed Shafi Shajakhan2011-12-151-1/+1
| | | | | Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Use appropriate TID for sending BAR, ADDBA and DELBA framesHelmut Schaa2011-12-154-8/+17
| | | | | | | | | | | | | Currently BAR, ADDBA and DELBA frames are always sent using AC_VO. If the TID for which a BA session is established is assigned to a different queue BAR, ADDBA and DELBA frames can "overtake" frames of the according BA session. Hence, always put BA session related frames into the same queue as the BA sessions data frames. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: reduce station management complexityJohannes Berg2011-12-153-203/+63
| | | | | | | | | | | | | Now that IBSS no longer needs to insert stations from atomic context, we can get rid of all the special cases for that, and even get rid of the sta_lock (though it needs to stay as tim_lock.) This makes the station management code much more straight-forward. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: delay IBSS station insertionJohannes Berg2011-12-154-57/+140
| | | | | | | | | | | | | | | In order to notify drivers and simplify the station management code, defer IBSS station insertion to a work item and don't do it directly while receiving a frame. This increases the complexity in IBSS a little bit, but it's pretty straight forward and it allows us to reduce the station management complexity (next patch) considerably. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: make address arguments to sta_info_alloc constJohannes Berg2011-12-152-2/+2
| | | | | | | No real changes, just note that they are const. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: count authorized stations per BSSJohannes Berg2011-12-154-16/+20
| | | | | | | | | | | | | | Currently, each AP interface will send multicast traffic if any interface has a station entry even if that station entry is allocated only. With the new station state management we can easily fix it by adding a counter that counts each authorized station only and send multicast traffic only when the correct interface has at least one authorized station. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: refactor station state transitionsJohannes Berg2011-12-158-30/+172
| | | | | | | | | | | | | | | | | | | | | | | | Station entries can have various states, the most important ones being auth, assoc and authorized. This patch prepares us for telling the driver about these states, we don't want to confuse drivers with strange transitions, so with this we enforce that they move in the right order between them (back and forth); some transitions might happen before the driver even knows about the station, but at least runtime transitions will be ordered correctly. As a consequence, IBSS and MESH stations will now have the ASSOC flag set (so they can transition to AUTHORIZED), and we can get rid of a special case in TX processing. When freeing a station, unwind the state so that other parts of the code (or drivers later) can rely on the transitions. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: use station mutex in configurationJohannes Berg2011-12-151-6/+6
| | | | | | | | | There's no need to use RCU here, we can just lock the station mutex instead. This allows the code to sleep, which is necessary for later patches. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: remove duplicate TDLS peer verificationJohannes Berg2011-12-151-14/+0
| | | | | | | | This is already checked in cfg80211, so no need to repeat the checks here. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* cfg80211: validate nl80211 station handling betterJohannes Berg2011-12-151-0/+8
| | | | | | | | | | | | | | The nl80211 station handling code is a bit messy and doesn't do a lot of validation. It seems like this could be an issue for drivers that don't use mac80211 to validate everything. As cfg80211 doesn't keep station state, move the validation of allowing supported_rates to change for TDLS only in station mode to mac80211. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: free skb on error path of ieee80211_ibss_join()Simon Wunderlich2011-12-141-0/+1
| | | | | | | | Our new return also created a memleak. The skb should be freed before returning an error. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Merge branch 'master' of ↵John W. Linville2011-12-141-45/+41
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/iwlwifi/iwl-agn.c
| * mac80211: fix another race in aggregation startJohannes Berg2011-12-071-45/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Emmanuel noticed that when mac80211 stops the queues for aggregation that can leave a packet pending. This packet will be given to the driver after the AMPDU callback, but as a non-aggregated packet which messes up the sequence number etc. I also noticed by looking at the code that if packets are being processed while we clear the WANT_START bit, they might see it cleared already and queue up on tid_tx->pending. If the driver then rejects the new aggregation session we leak the packet. Fix both of these issues by changing this code to not stop the queues at all. Instead, let packets queue up on the tid_tx->pending queue instead of letting them get to the driver, and add code to recover properly in case the driver rejects the session. (The patch looks large because it has to move two functions to before their new use.) Cc: stable@vger.kernel.org Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: don't check sdata_running in vif notifierEliad Peller2011-12-131-4/+1
| | | | | | | | | | | | | | | | | | | | | | The ip address of the vif can be set even before the vif is up. requiring the vif to be up in the vif notifier makes the notifer ignore this event, which causes wrong arp filter configuration later on. Reported-by: Eyal Shapira <eyal@wizery.com> Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: configure BSS_CHANGED_ARP_FILTER on reconfigurationEliad Peller2011-12-131-1/+2
| | | | | | | | | | | | | | Configure arp filtering on sta reconfiguration. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Do not request FIF_BCN_PRBRESP_PROMISC for HW scan.Dmitry TARNYAGIN2011-12-131-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ieee80211_configure_filter code used local->scanning as a boolean value when it was a bit mask. Bits SCAN_COMPLETED, SCAN_ABORTED should not set FIF_BCN_PRBRESP_PROMISC filter. SCAN_HW_SCANNING should not set FIF_BCN_PRBRESP_PROMISC either, as there is no explicit filter configuration request from scan code. If a driver requires FIF_BCN_PRBRESP_PROMISC mode during HW scanning, it's up to the driver to temporary enable it. Similar mistake was fixed also in ieee80211_hw_config (power configuration code). Verified-by: Vitaly Wool <vitaly.wool@sonyericsson.com> Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Make use of ieee80211_is_* functions in tx status pathHelmut Schaa2011-12-131-10/+5
| | | | | | | | | | | | | | | | | | Use ieee80211_is_data, ieee80211_is_mgmt and ieee80211_is_first_frag in the tx status path. This makes the code easier to read and allows us to remove two local variables: frag and type. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Purge A-MPDU TX queues before station destructionsYogesh Ashok Powar2011-12-132-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a station leaves suddenly while ampdu traffic to that station is still running, there is a possibility that the ampdu pending queues are not freed due to a race condition leading to memory leaks. In '__sta_info_destroy' when we attempt to destroy the ampdu sessions in 'ieee80211_sta_tear_down_BA_sessions', the driver calls 'ieee80211_stop_tx_ba_cb_irqsafe' to delete the ampdu structures (tid_tx) and splice the pending queues and this job gets queued in sdata workqueue. However, the sta entry can get destroyed before the above work gets scheduled and hence the race. Purging the queues and freeing the tid_tx to avoid the leak. The better solution would be to fix the race, but that can be taken up in a separate patch. Signed-off-by: Nishant Sarmukadam <nishants@marvell.com> Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: unlock on error path in ieee80211_ibss_join()Dan Carpenter2011-12-131-1/+3
| | | | | | | | | | | | | | We recently introduced a new return here but it needs an unlock first. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Remove WARN_ON in apply-ht-override logic.Ben Greear2011-12-061-1/+3
| | | | | | | | | | | | | | | | | | | | AP interfaces routinely call this logic, so just silently return when this happens instead of splatting the kernel logs. Reported-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: accept public action frames with mismatched BSSIDJohannes Berg2011-12-061-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Arik's patch "mac80211: allow action frames with unknown BSSID in GO mode" allowed any action frames in P2P mode to go through, but only to cooked monitor interfaces as the IEEE80211_RX_RA_MATCH was still cleared. As a result my no-monitor patches broke invitation responses. Instead of allowing any action frames in P2P GO mode to go through with a wrong BSSID like that patch did, allow all public action frames. They will never be processed by mac80211, but can be reported via nl80211 then. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: fix retransmitJohannes Berg2011-12-061-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | This fixes another regression from my "pass all fragments to driver at once" patches -- if the packet is being retransmitted then we don't go through all handlers, but we still need to move it to the skbs list, otherwise we run into the first warning in __ieee80211_tx() and leak the skb. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: Add HT operation modes for IBSSAlexander Simon2011-12-067-12/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The HT mode is set by iw (previous patchsets). The interface is set into the specified HT mode. HT mode and capabilities are announced in beacons. If we add a station that uses HT also, the fastest matching HT mode will be used for transmission. That means if we are using HT40+ and we add a station running on HT40-, we would transfer at HT20. If we join an IBSS with HT40, but the secondary channel is not available, we will fall back into HT20 as well. Allow frame aggregation to start in IBSS mode. Signed-off-by: Alexander Simon <an.alexsimon@googlemail.com> [siwu@hrz.tu-chemnitz.de: Updates] * remove implicit channel_type enum assumptions * use rate_control_rate_init() if channel type changed * remove channel flags check * activate HT IBSS feature support * slightly reword commit message * rebase on wireless-testing Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | mac80211: handle protection mode, RIFS and ADDBA for HT IBSSSimon Wunderlich2011-12-063-0/+44
| | | | | | | | | | | | | | | | | | | | * Follow 802.11n-2009 9.13.3.1 for protection mode and ADDBA * Send ADDBA only to HT STAs - implement 11.5.1.1 partially Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | Merge branch 'master' of ↵John W. Linville2011-12-027-14/+62
|\| | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/iwlwifi/iwl-agn.c drivers/net/wireless/libertas/cfg.c
| * Revert "mac80211: clear sta.drv_priv on reconfiguration"John W. Linville2011-12-011-1/+0
| | | | | | | | | | | | | | | | This reverts commit f785d83a19bca326f79d127a413e35769afc0105. This was provoking WARNINGs from the iwlegacy drivers. Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: fill rate filter for internal scan requestsSimon Wunderlich2011-11-301-0/+6
| | | | | | | | | | | | | | | | | | | | The rates bitmap for internal scan requests shoud be filled, otherwise there will be probe requests with zero rates supported. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Cc: stable@vger.kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: fix race between the AGG SM and the Tx data pathEmmanuel Grumbach2011-11-281-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a packet is supposed to sent be as an a-MPDU, mac80211 sets IEEE80211_TX_CTL_AMPDU to let the driver know. On the other hand, mac80211 configures the driver for aggregration with the ampdu_action callback. There is race between these two mechanisms since the following scenario can occur when the BA agreement is torn down: Tx softIRQ drv configuration ========== ================= check OPERATIONAL bit Set the TX_CTL_AMPDU bit in the packet clear OPERATIONAL bit stop Tx AGG Pass Tx packet to the driver. In that case the driver would get a packet with TX_CTL_AMPDU set although it has already been notified that the BA session has been torn down. To fix this, we need to synchronize all the Qdisc activity after we cleared the OPERATIONAL bit. After that step, all the following packets will be buffered until the driver reports it is ready to get new packets for this RA / TID. This buffering allows not to run into another race that would send packets with TX_CTL_AMPDU unset while the driver hasn't been requested to tear down the BA session yet. This race occurs in practice and iwlwifi complains with a WARN_ON when it happens. Cc: stable@kernel.org Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: fix race condition caused by late addBA responseNikolay Martynov2011-11-281-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If addBA responses comes in just after addba_resp_timer has expired mac80211 will still accept it and try to open the aggregation session. This causes drivers to be confused and in some cases even crash. This patch fixes the race condition and makes sure that if addba_resp_timer has expired addBA response is not longer accepted and we do not try to open half-closed session. Cc: stable@vger.kernel.org Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com> [some adjustments] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: don't stop a single aggregation session twiceJohannes Berg2011-11-281-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nikolay noticed (by code review) that mac80211 can attempt to stop an aggregation session while it is already being stopped. So to fix it, check whether stop is already being done and bail out if so. Also move setting the STOPPING state into the lock so things are properly atomic. Cc: stable@vger.kernel.org Reported-by: Nikolay Martynov <mar.kolya@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: Fix endian bug in radiotap header generationHelmut Schaa2011-11-211-4/+4
| | | | | | | | | | | | | | | | | | I intoduced this bug in commit a2fe81667410723d941a688e1958a49d67ca3346 "mac80211: Build TX radiotap header dynamically" Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: Fix AMSDU rate printout in debugfs.Ben Greear2011-11-211-2/+2
| | | | | | | | | | | | | | | | | | It was flipped. See section 7.3.2.56 of the 802.11n spec for details. Signed-off-by: Ben Greear <greearb@candelatech.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mac80211: fix race between connection monitor & suspendJohannes Berg2011-11-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the connection monitor timer fires right before suspend, the following will happen: timer fires -> monitor_work gets queued suspend calls ieee80211_sta_quiesce ieee80211_sta_quiesce: - deletes timer - cancels monitor_work synchronously, running it [note wrong order of these steps] monitor_work runs, re-arming the timer later, timer fires while system should be quiesced This causes a warning: WARNING: at net/mac80211/util.c:540 ieee80211_can_queue_work+0x35/0x40 [mac80211]() but is otherwise harmless. I'm not completely sure this is the scenario Thomas stumbled across, but it is the only way I can right now see the warning in a scenario like the one he reported. Reported-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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