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2012-10-26mac80211: move AP teardown code to correct placeJohannes Berg
Since cfg80211 will now call the explicit stop_ap operation when an AP interface goes down, move all teardown code there and remove it from interface handling. The only thing that needs to stay is the code to dev_close() all dependent VLANs. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-26mac80211: a few formatting fixesJohannes Berg
Fix a few code formatting issues in the RX code. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-25mac80211: don't inspect Sequence Control field on control framesJavier Cardona
Per IEEE Std. 802.11-2012, Sec 8.2.4.4.1, the sequence Control field is not present in control frames. We noticed this problem when processing Block Ack Requests. Cc: stable@vger.kernel.org Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Javier Lopez <jlopex@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-25mac80211: complete bss_info tracingJohannes Berg
Some fields have been added but were missed in tracing, add them now. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-25mac80211: use non-atomic bitmap operation for local variableJohannes Berg
For a local variable there's no need to use the atomic set_bit() operation, use __set_bit() instead. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-25mac80211: Don't drop frames received with mesh ttl == 1Javier Cardona
Prior this fix, those frames were not received, nor forwarded. Fix this to receive and not forward. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-25mac80211: Only process mesh config header on frames that RA_MATCHJavier Cardona
Doing otherwise is wrong, and may wreak havoc on the mpp tables, specially if the frame is encrypted. Cc: stable@vger.kernel.org Reported-by: Chaoxing Lin <Chaoxing.Lin@ultra-3eti.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-25mac80211: remove duplicate check in ieee80211_rx_mgmt_beaconRami Rosen
Remove a duplicate check in ieee80211_rx_mgmt_beacon, there is no need to make again the same check for the IEEE80211_HW_PS_NULLFUNC_STACK twice; the two ifs can be consolidated. Signed-off-by: Rami Rosen <ramirose@gmail.com> [reword commit message & break long lines and also clean up variable] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-24mac80211: use blacklist for duplicate IE checkJohannes Berg
Instead of the current whitelist which accepts duplicates only for the quiet and vendor IEs, use a blacklist of all IEs (that we currently parse) that can't be duplicated. This avoids detecting a beacon as corrupt in the future when new IEs are added that can be duplicated. Cc: stable@vger.kernel.org Signed-off-by: Paul Stewart <pstew@chromium.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-23mac80211: expose AES-CMAC subkey calculationAssaf Krauss
Expose a function for the AES-CMAC subkey calculation to drivers. This is the first step of the AES-CMAC cipher key setup and may be required for CMAC hardware offloading. Signed-off-by: Assaf Krauss <assaf.krauss@intel.com> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-23mac80211: mesh STAs only process mesh beaconsThomas Pedersen
Before, a mesh STA would execute some code on behalf of AP or IBSS beacons. Since the mesh stack currently does not consider anything but other mesh STAs interesting, limit processing to just these and save a little overhead. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-23Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c net/mac80211/mlme.c
2012-10-22mac80211: fix WDS channel context testJohannes Berg
WDS is (currently) not allowed when channel contexts are *supported*, not when they're *not* supported. Fix the inverted test. Reported-by: Ronald <ronald645@gmail.com> Tested-by: Ronald <ronald645@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-19mac80211: make client powersave independent of interface typeMarco Porsch
This patch prepares mac80211 for a later implementation of mesh or ad-hoc powersave clients. The structures related to powersave (buffer, TIM map, counters) are moved from the AP-specific interface structure to a generic structure that can be embedded into any interface type. The functions related to powersave are prepared to allow easy extension with different interface types. For example with: + } else if (sta->sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { + ps = &sdata->u.mesh.ps; Some references to the AP's beacon structure are removed where they were obviously not used. The patch compiles without warning and has been briefly tested as AP interface with one client in PS mode. Signed-off-by: Marco Porsch <marco.porsch@etit.tu-chemnitz.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18nl/cfg80211: force scan using an AP vif if requestedAntonio Quartulli
If the user wants to scan using a vif configured as AP, cfg80211 must give him a chance to do it, even if this will disrupt the stations performance due to off-channel scanning. To do so, this patch adds a 'force' flag to the SCAN_TRIGGER command which tells cfg80211 to perform the scanning operation even if the vif is an AP and the beaconing has already started. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18mac80211: fix copy-paste typo in KconfigMarco Porsch
Signed-off-by: Marco Porsch <marco.porsch@etit.tu-chemnitz.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18mac80211: use __printf attribute in debugfsJohannes Berg
The internal function mac80211_format_buffer() has a printf-style argument list, so add the attribute to have gcc verify that list. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18mac80211: remove some unused codeJohannes Berg
There are a number of unused variables that gcc pointed out (when building with W=1) as well as some conditions that can never be true due to the datatypes used: unsigned values can't be less than zero. Remove this code. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18mac80211: remove unimplemented mesh vendor syncJohannes Berg
There's no vendor-specific mesh sync implemented and there don't need to be dummy handlers that only print messages, so remove that code. While at it, also constify the mesh sync ops. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18mac80211: Notify new IBSS network creationSujith Manoharan
Initialization of beacon transmission in IBSS mode depends on whether a new BSS is being created or joined. When joining an existing IBSS network, beaconing has to start only after a TSF-sync has happened - this is explained in 11.1.4. Introduce a new parameter in the BSS information structure to indicate creator/joiner mode. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18mac80211: add support for tx to abort low priority scan requestsSam Leffler
Use NL80211_SCAN_FLAG_LOW_PRIORITY flag in mac80211's scan state machine to prematurely terminate scan operations if outbound traffic collides. This is useful for marking background scans so they don't affect throughput. Signed-off-by: Sam Leffler <sleffler@chromium.org> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> [set feature flag only if software scan is used] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-18wireless: use OR operation to set wiphy featuresJohannes Berg
The next patch will introduce a flag that is set by default in cfg80211 so drivers and mac80211 need to use |= to set features they have so that they don't clear the already-set feature. We could set the flag in wiphy_register() instead of wiphy_new() to avoid this patch, but then the drivers couldn't *unset* flags they don't want to use even though the implementation is generic. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17Merge branch 'for-john' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
2012-10-17mac80211: connect with HT20 if HT40 is not permittedJohannes Berg
Some changes to fix issues with HT40 APs in Korea and follow-up changes to allow using HT40 even if the local regulatory database disallows it caused issues with iwlwifi (and could cause issues with other devices); iwlwifi firmware would assert if you tried to connect to an AP that has an invalid configuration (e.g. using HT40- on channel 140.) Fix this, while avoiding the "Korean AP" issue by disabling HT40 and advertising HT20 to the AP when connecting. Cc: stable@vger.kernel.org [3.6] Reported-by: Florian Reitmeir <florian@reitmeir.org> Tested-by: Florian Reitmeir <florian@reitmeir.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17{nl,cfg}80211: Peer STA VHT capsMahesh Palivela
To save STAs VHT caps in AP mode Signed-off-by: Mahesh Palivela <maheshp@posedge.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: VHT peer STA capsMahesh Palivela
Save the AP's VHT capabilities (in managed mode) and make them available to the driver in the station information. Unlike HT capabilities, they aren't restricted to the common capabilities, so drivers must be aware of their own capabilities. Signed-off-by: Mahesh Palivela <maheshp@posedge.com> [fix endian conversion bug ...] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17ieee80211: Rename VHT cap structMahesh Palivela
Rename struct ieee80211_vht_capabilities to ieee80211_vht_cap and renamed its member vht_capabilities_info to vht_cap_info. Signed-off-by: Mahesh Palivela <maheshp@posedge.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: move out the non-statistics variable estab_plinks from mesh_statAshok Nagarajan
estab_plinks is not a statistics member. Hence move estab_plinks from struct mesh_stat to struct ieee80211_if_mesh Signed-off-by: Ashok Nagarajan <ashok@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: Use appropriate debug wrapperMohammed Shafi Shajakhan
ieee80211_sta_expire will be called by both IBSS and mesh interfaces to account for inactive stations, so it would be more appropriate to use sta_dbg instead of ibss_dbg. Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: Allow station mode SAE to be implemented in user spaceJouni Malinen
SAE uses two rounds of Authentication frames and both rounds require considerable calculation to be done. This commit extends the existing station mode authentication request to allow more control for user space programs to build the SAE fields and to run the authentication step ones. Only the second round with authentication transaction sequence 2 will result in moving to authenticated state. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: Add debug print on unexpect authentication stateJouni Malinen
This is useful when debugging authentication process issues. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: Take status code as parameter to ieee80211_send_authJouni Malinen
Non-zero status code may be needed for Authentication frames, e.g., when using SAE. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: add channel context iteratorJohannes Berg
Drivers may need to iterate the active channel contexts, export an iterator function to allow that. To make it possible, use RCU-safe list functions. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: track needed RX chains for channel contextsJohannes Berg
On each channel that the device is operating on, it may need to listen using one or more chains depending on the SMPS settings of the interfaces using it. The previous channel context changes completely removed this ability (before, it was available as the SMPS mode). Add per-context tracking of the required static and dynamic RX chains and notify the driver on changes. To achieve this, track the chains and SMPS mode used on each virtual interface and update the channel context whenever this changes. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17mac80211: use channel contextsJohannes Berg
Instead of operating on a single channel only, use the new channel context infrastructure in all mac80211 code. This enables drivers that want to use the new channel context infrastructure to use multiple channels, while nothing should change for all the other drivers that don't support it. Right now this disables both TX power settings and spatial multiplexing powersave. Both need to be re-enabled on a channel context basis. Additionally, when channel contexts are used drop the connection when channel switch is received rather than trying to handle it. This will have to be improved later. [With fixes from Eliad and Emmanuel incorporated] Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16mac80211: track whether to use channel contextsJohannes Berg
Depending on the driver, channel contexts may be used or not. If they are used, the driver must have support for hardware scan and remain-on-channel; otherwise the driver must not advertise support for multiple channels. Also prohibit WDS type interfaces when channel contexts are to be used as there's no clear definition of which channel they use. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16mac80211: check channel context methodsJohannes Berg
Verify that the channel context methods are all assigned by the driver or not used. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16mac80211: reuse channels for channel contextsMichal Kazior
Reuse channels with compatible channel types. Some channel types are compatible and can be used concurrently. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16mac80211: use channel context notificationsMichal Kazior
Channel context pointer will be accessible on both assign and unassign events. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16mac80211: introduce new ieee80211_opsMichal Kazior
Introduce channel context driver methods. The channel on a context channel is immutable, but the channel type and other properties can change. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16mac80211: introduce channel context skeleton codeMichal Kazior
Channel context are the foundation for multi-channel operation. They are are immutable and are re-created (or re-used if other interfaces are bound to a certain channel and a compatible channel type) on channel switching. This is an initial implementation and more features will come in separate patches. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> [some changes including RCU protection] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-15mac80211: use ieee80211_free_txskb in a few more placesFelix Fietkau
Free tx status skbs when draining power save buffers, pending frames, or when tearing down a vif. Fixes remaining conditions that can lead to hostapd/wpa_supplicant hangs when running out of socket write memory. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@vger.kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-15mac80211: check if key has TKIP type before updating IVStanislaw Gruszka
This patch fix corruption which can manifest itself by following crash when switching on rfkill switch with rt2x00 driver: https://bugzilla.redhat.com/attachment.cgi?id=615362 Pointer key->u.ccmp.tfm of group key get corrupted in: ieee80211_rx_h_michael_mic_verify(): /* update IV in key information to be able to detect replays */ rx->key->u.tkip.rx[rx->security_idx].iv32 = rx->tkip_iv32; rx->key->u.tkip.rx[rx->security_idx].iv16 = rx->tkip_iv16; because rt2x00 always set RX_FLAG_MMIC_STRIPPED, even if key is not TKIP. We already check type of the key in different path in ieee80211_rx_h_michael_mic_verify() function, so adding additional check here is reasonable. Cc: stable@vger.kernel.org # 3.0+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-15cfg80211/mac80211: avoid state mishmash on deauthStanislaw Gruszka
Avoid situation when we are on associate state in mac80211 and on disassociate state in cfg80211. This can results on crash during modules unload (like showed on this thread: http://marc.info/?t=134373976300001&r=1&w=2) and possibly other problems. Reported-by: Pedro Francisco <pedrogfrancisco@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-15Merge remote-tracking branch 'wireless/master' into mac80211Johannes Berg
2012-10-08mac80211: use ieee80211_free_txskb to fix possible skb leaksFelix Fietkau
A few places free skbs using dev_kfree_skb even though they're called after ieee80211_subif_start_xmit might have cloned it for tracking tx status. Use ieee80211_free_txskb here to prevent skb leaks. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@vger.kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-08mac80211: call drv_get_tsf() in sleepable contextThomas Pedersen
The call to drv_get/set_tsf() was put on the workqueue to perform tsf adjustments since that function might sleep. However it ended up inside a spinlock, whose critical section must be atomic. Do tsf adjustment outside the spinlock instead, and get rid of a warning. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-01mac80211: Fix FC masking in BIP AAD generationJouni Malinen
The bits used in the mask were off-by-one and ended up masking PwrMgt, MoreData, Protected fields instead of Retry, PwrMgt, MoreData. Fix this and to mask the correct fields. While doing so, convert the code to mask the full FC using IEEE80211_FCTL_* defines similarly to how CCMP AAD is built. Since BIP is used only with broadcast/multicast management frames, the Retry field is always 0 in these frames. The Protected field is also zero to maintain backwards compatibility. As such, the incorrect mask here does not really cause any problems for valid frames. In theory, an invalid BIP frame with Retry or Protected field set to 1 could be rejected because of BIP validation. However, no such frame should show up with standard compliant implementations, so this does not cause problems in normal BIP use. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-09-21mac80211: don't send delBA on addBA failureJohannes Berg
There's no reason to send a delBA when the peer refused our addBA, so change that. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-09-21mac80211: don't send delBA when removing stationsJohannes Berg
When a station is removed and we stop the aggregation sessions, it's not useful to send delBA since this is due to us or the station disassociating or dropping the connection in some other way, so change that. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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