- Apr 25, 2014
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Michal Kazior authored
This allows new vifs to be assigned to a chanctx as long as chanctx's reservation chandefs (if any) and chanctx's current chandef (implied by assigned vifs at the time, if any) and the new vif chandef are all compatible. This implies it is impossible to assign a new vif to an in-place reservation chanctx. This gives no advantages for single-channel hardware. It makes sense for multi-channel hardware only. Signed-off-by:
Michal Kazior <michal.kazior@tieto.com> Signed-off-by:
Johannes Berg <johannes.berg@intel.com>
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Michal Kazior authored
This can be useful. Provides a more straghtforward way to iterate over interfaces taking part in chanctx reservation and allows tracking chanctx usage explicitly. The structure is protected by local->chanctx_mtx. Signed-off-by:
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Michal Kazior authored
This can be useful. Provides a more straghtforward way to iterate over interfaces bound to a given chanctx and allows tracking chanctx usage explicitly. The structure is protected by local->chanctx_mtx. Signed-off-by:
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Michal Kazior authored
Initial chanctx reservation code wasn't aware of radar detection requirements. This is necessary for chanctx reservations to be used for channel switching in the future. Signed-off-by:
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Michal Kazior authored
Do not allocate more channel contexts than a driver is capable for currently matching interface combination. This allows the ieee80211_vif_reserve_chanctx() to act as a guard against breaking interface combinations. Signed-off-by:
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Michal Kazior authored
The utility function has no uses yet. It is aimed at future chanctx reservation management and channel switching. Signed-off-by:
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Michal Kazior authored
The patch splits cfg80211_check_combinations() into an iterator function and a simple iteration user. This makes it possible for drivers to asses how many channels can use given iftype setup. This in turn can be used for future multi-interface/multi-channel channel switching. Signed-off-by:
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Ilan Peer authored
At some locations, channels 149-165 are considered a single bundle, while at some other locations, e.g., Indonesia, channels 149-161 are considered a single bundle, while channel 165 belongs to a different bundle. This means that: 1. A station interface connection to an AP on channel 165 allows the instantiation of a P2P GO on channels 149-165. 2. A station interface connection to an AP on channels 149-161 does NOT allow the instantiation of a P2P GO on channel 165. Fix this. Signed-off-by:
Ilan Peer <ilan.peer@intel.com> Signed-off-by:
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- Apr 22, 2014
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Bob Copeland authored
When a path target responds to a path request, its response always contains the most up-to-date information; accordingly, it should use the latest target_sn, regardless of net_traversal_jiffies(). Otherwise, only the first path response is considered when constructing a path, as it will have the highest target_sn of all replies during that period. Signed-off-by:
Bob Copeland <bob@cozybit.com> Signed-off-by:
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Bob Copeland authored
Previously, the code to copy the RSN IE from the mesh config would increment its pointer by one in the loop instead of by the element length, so there was the potential for mistaking another IE's data fields as the RSN IE. cfg80211_find_ie() exists, so just use that. Signed-off-by:
Bob Copeland <me@bobcopeland.com> Signed-off-by:
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Bob Copeland authored
u16_field_get() is a simple wrapper around get_unaligned_le16(), and it is being assigned to a u16, so there's no need to promote to u32 in the middle. Signed-off-by:
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Jouni Malinen authored
This can be useful for testing purposes to confirm valid AP behavior on HT 20/40 co-existence functionality. Signed-off-by:
Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by:
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Luis R. Rodriguez authored
This allows processing of the last regulatory request when we determine its still pending. Without this if a regulatory request failed to get processed by userspace we wouldn't be able to re-process it later. An example situation that can lead to an unprocessed last_request is enabling cfg80211 to be built-in to the kernel, not enabling CFG80211_INTERNAL_REGDB and the CRDA binary not being available at the time the udev rule that kicks of CRDA triggers. In such a situation we want to let some cfg80211 triggers eventually kick CRDA for us again. Without this if the first cycle attempt to kick off CRDA failed we'd be stuck without the ability to change process any further regulatory domains. cfg80211 will trigger re-processing of the regulatory queue whenever schedule_work(®_work) is called, currently this happens when: * suspend / resume * disconnect * a beacon hint gets triggered (non DFS 5 GHz AP found) * a regulatory request gets added to the queue We don't have any specific opportunistic late boot triggers to address a late mount of where CRDA resides though, adding that should be done separately through another patch. Without an opportunistic fix then this fix relies at least one of the triggeres above to happen. Reported-by:
Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by:
Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by:
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Arik Nemtsov authored
Avoid freeing the last request while it is being processed. This can happen in some cases if reg_work is kicked for some reason while the currently pending request is in flight. Cc: Sander Eikelenboom <linux@eikelenboom.it> Tested-by:
Eliad Peller <eliad@wizery.com> Tested-by:
Colleen Twitty <colleen@cozybit.com> Signed-off-by:
Arik Nemtsov <arik@wizery.com> Signed-off-by:
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- Apr 11, 2014
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Janusz Dziedzic authored
Set DFS CAC time also in case of using custom and strict regulatory from drivers. In other case we could have unset DFS CAC time directly after driver loaded and before issue regulatory set from user mode. Signed-off-by:
Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by:
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- Apr 10, 2014
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Johannes Berg authored
When looking for a BSS matching given parameters, ignore invalid BSSIDs. This avoids, for example, trying to join an IBSS that has a multicast BSSID, which isn't supported by all drivers nor is it a valid configuration of the IBSS so better create a new one with a correctly chosen random BSSID. Signed-off-by: -
Johannes Berg authored
Don't allow using a multicast address as the BSSID, that isn't a valid configuration. Signed-off-by: -
Zhao, Gang authored
cfg80211_wext_freq() is declared in wext-compat.h, but its parameter struct wiphy's declaration is not included there. As the parameter isn't used, just remove it. Signed-off-by:
Zhao, Gang <gamerh2o@gmail.com> [remove parameter instead of changing to netdev] Signed-off-by:
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- Apr 09, 2014
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Zhao, Gang authored
Some header files in mac80211 don't include all the header files they require, fix that. Signed-off-by:
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Rostislav Lisovy authored
The channels with 5/10MHz bandwidth are not HT. We have to reflect this in conf_is_ht() function which returns whether the particular channel is HT or not. Signed-off-by:
Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz> Signed-off-by:
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Kalle Valo authored
Commit a2f73b6c ("cfg80211: move regulatory flags to their own variable") renamed WIPHY_FLAG_CUSTOM_REGULATORY to REGULATORY_CUSTOM_REG, but missed to update one comment. Signed-off-by:
Kalle Valo <kvalo@qca.qualcomm.com> Signed-off-by:
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Pawel Kulakowski authored
This allows user-space (wpa_supplicant) to disable LDPC coding. Signed-off-by:
Pawel Kulakowski <pawel.kulakowski@tieto.com> Signed-off-by:
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Michal Kazior authored
All bits from radar_detect must match combination radar bitmask. Otherwise it is theoretically possible to lead into an invalid combination provided a driver reports strange combinations. Signed-off-by:
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Luciano Coelho authored
With single-channel drivers, we need to be able to change a running chanctx if we want to use chanctx reservation. Not all drivers may be able to do this, so add a flag that indicates support for it. Changing a running chanctx can also be used as an optimization in multi-channel drivers when the context needs to be reserved for future usage. Introduce IEEE80211_CHANCTX_RESERVED chanctx mode to mark a channel as reserved so nobody else can use it (since we know it's going to change). In the future, we may allow several vifs to use the same reservation as long as they plan to use the chanctx on the same future channel. Signed-off-by:
Luciano Coelho <luciano.coelho@intel.com> Signed-off-by:
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Luciano Coelho authored
In order to support channel switch with multiple vifs and multiple contexts, we implement a concept of channel context reservation. This allows us to reserve a channel context to be used later. The reservation functionality is not tied directly to channel switch and may be used in other situations (eg. reserving a channel context during IBSS join). We first check if an existing compatible context exists and if it does, we reserve it. If there is no compatible context we create a new one and reserve it. Additionally, split ieee80211_vif_copy_chanctx_to_vlans() so we can call it while already holding the chanctx mutex. Signed-off-by:
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Luciano Coelho authored
Combine the functions into one, so that we can switch from one context to the other without having to unassign and assign separately. This is needed by the channel reservation functionality because otherwise we have a small period of time when the chanctx is set to NULL, which can cause problems if someone else is trying to dereference it. Signed-off-by:
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Luciano Coelho authored
ieee80211_vif_change_channel() locks chanctx_mtx. When implementing channel reservation for CS, we will need to call the function to change channel when the lock is already held, so split the part that requires the lock out and leave the locking in the original function. Signed-off-by:
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Michal Kazior authored
It was impossible to change chanctx of master AP for AP VLANs because the copy function requires RTNL which can't be simply taken in mac80211 code due to possible deadlocks. This is required for future chanctx reservation that re-bind vifs to new chanctx. This requires safe AP VLAN iteration without RTNL. Now VLANs can be iterated while holding either RTNL or local->mtx because the list is modified while holding both of these locks. Signed-off-by:
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Luciano Coelho authored
Get rid of the cfg80211_can_add_interface() and cfg80211_can_change_interface() functions by moving that functionality to mac80211. With this patch all interface combination checks are now out of cfg80211 (except for the channel switch case which will be addressed in a future commit). Additionally, modify the ieee80211_check_combinations() function so that an undefined chandef can be passed, in order to use it before a channel is defined. Signed-off-by:
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Luciano Coelho authored
Now that mac80211 can check the interface combinations itself, move the combinations check from cfg80211 to mac80211 when joining an IBSS. Signed-off-by:
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Luciano Coelho authored
Move the counting part of the interface combination check from cfg80211 to mac80211. This is needed to simplify locking when the driver has to perform a combination check by itself (eg. with channel-switch). Signed-off-by:
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Luciano Coelho authored
Some interface types don't require DFS (such as STATION, P2P_CLIENT etc). In order to centralize these decisions, make cfg80211_chandef_dfs_required() take the iftype into consideration. Signed-off-by:
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Luciano Coelho authored
Separate the code that counts the interface types and channels from the code that check the interface combinations. The new function that checks for combinations is exported so it can be called by the drivers. This is done in preparation for moving the interface combinations checks out of cfg80211. Signed-off-by:
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Ilan Peer authored
Allow GO operation on a channel marked with IEEE80211_CHAN_INDOOR_ONLY iff there is a user hint indicating that the platform is operating in an indoor environment, i.e., the platform is a printer or media center device. Signed-off-by:
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Ilan Peer authored
Add the option to hint the wireless core that it is operating in an indoor environment. Signed-off-by:
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Ilan Peer authored
Allow GO operation on a channel marked with IEEE80211_CHAN_GO_CONCURRENT iff there is an active station interface that is associated to an AP operating on the same channel in the 2 GHz band or the same UNII band (in the 5 GHz band). This relaxation is not allowed if the channel is marked with IEEE80211_CHAN_RADAR. Note that this is a permissive approach to the FCC definitions, that require a clear assessment that the device operating the AP is an authorized master, i.e., with radar detection and DFS capabilities. It is assumed that such restrictions are enforced by user space. Furthermore, it is assumed, that if the conditions that allowed for the operation of the GO on such a channel change, i.e., the station interface disconnected from the AP, it is the responsibility of user space to evacuate the GO from the channel. Signed-off-by:
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Ilan Peer authored
Move the regulatory cellular base station hints support under a specific configuration option and make the option depend on CFG80211_CERTIFICATION_ONUS. Signed-off-by:
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David Spinadel authored
The FCC are clarifying some soft configuration requirements, which among other include the following: 1. Indoor operation, where a device can use channels requiring indoor operation, subject to that it can guarantee indoor operation, i.e., the device is connected to AC Power or the device is under the control of a local master that is acting as an AP and is connected to AC Power. 2. Concurrent GO operation, where devices may instantiate a P2P GO while they are under the guidance of an authorized master. For example, on a channel on which a BSS is connected to an authorized master, i.e., with DFS and radar detection capability in the UNII band. See https://apps.fcc.gov/eas/comments/GetPublishedDocument.html?id=327&tn=528122 Add support for advertising Indoor-only and GO-Concurrent channel properties. Signed-off-by:
David Spinadel <david.spinadel@intel.com> Signed-off-by:
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Zhao, Gang authored
Wdev->ssid_len has already been set in cfg80211_connect() and is equal to connect->ssid_len. Use wdev->ssid_len instead of connect->ssid_len so it will be consistent with previous ssid assignment statement. If bss is found in cfg80211_get_conn_bss(), wdev->conn->state is set to CFG80211_CONN_AUTHENTICATE_NEXT in there. So it's not needed to set it manually to CFG80211_CONN_AUTHENTICATE_NEXT if bss is found in that function. Signed-off-by:
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Monam Agarwal authored
rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. However, in the case that NULL is assigned there's no structure to initialize so using RCU_INIT_POINTER instead is safe and more efficient. Signed-off-by:
Monam Agarwal <monamagarwal123@gmail.com> [squash eight tiny patches, rewrite commit log] Signed-off-by:
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