linux/net/wireless, branch v4.9

cfg80211: limit scan results cache size

2016-11-18T07:44:44Z

It's possible to make scanning consume almost arbitrary amounts of memory, e.g. by sending beacon frames with random BSSIDs at high rates while somebody is scanning. Limit the number of BSS table entries we're willing to cache to 1000, limiting maximum memory usage to maybe 4-5MB, but lower in practice - that would be the case for having both full-sized beacon and probe response frames for each entry; this seems not possible in practice, so a limit of 1000 entries will likely be closer to 0.5 MB. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg

cfg80211: add bitrate for 20MHz MCS 9

2016-11-15T13:34:00Z

Some drivers (ath10k) report MCS 9 @ 20MHz, which technically isn't defined. To get more meaningful value than 0 out of this however, just extrapolate a bitrate from ratio of MCS 7 and 9 in channels where it is allowed. Signed-off-by: Thomas Pedersen [add a comment about it in the code] Signed-off-by: Johannes Berg

cfg80211: process events caused by suspend before suspending

2016-10-26T05:59:52Z

When suspending without WoWLAN, cfg80211 will ask drivers to disconnect. Even when the driver does this synchronously, and immediately returns with a notification, cfg80211 schedules the handling thereof to a workqueue, and may then call back into the driver when the driver was already suspended/ing. Fix this by processing all events caused by cfg80211_leave_all() directly after that function returns. The driver still needs to do the right thing here and wait for the firmware response, but that is - at least - true for mwifiex where this occurred. Reported-by: Amitkumar Karwar Tested-by: Amitkumar Karwar Signed-off-by: Johannes Berg

cfg80211: add ability to check DA/SA in A-MSDU decapsulation

2016-10-12T07:19:10Z

We should not accept arbitrary DA/SA inside A-MSDUs, it could be used to circumvent protections, like allowing a station to send frames and make them seem to come from somewhere else. Add the necessary infrastructure in cfg80211 to allow such checks, in further patches we'll start using them. Signed-off-by: Johannes Berg

cfg80211: let ieee80211_amsdu_to_8023s() take only header-less SKB

2016-10-12T07:19:10Z

There's only a single case where has_80211_header is passed as true, which is in mac80211. Given that there's only simple code that needs to be done before calling it, export that function from cfg80211 instead and let mac80211 call it itself. Signed-off-by: Johannes Berg

Merge remote-tracking branch 'net-next/master' into mac80211-next

2016-10-04T07:46:44Z

Resolve the merge conflict between Felix's/my and Toke's patches coming into the tree through net and mac80211-next respectively. Most of Felix's changes go away due to Toke's new infrastructure work, my patch changes to "goto begin" (the label wasn't there before) instead of returning NULL so flow control towards drivers is preserved better. Signed-off-by: Johannes Berg

cfg80211: Provide an API to report NAN function termination

2016-09-30T11:21:37Z

Provide a function that reports NAN DE function termination. The function may be terminated due to one of the following reasons: user request, ttl expiration or failure. If the NAN instance is tied to the owner, the notification will be sent to the socket that started the NAN interface only Signed-off-by: Andrei Otcheretianski Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

cfg80211: provide a function to report a match for NAN

2016-09-30T11:21:32Z

Provide a function the driver can call to report a match. This will send the event to the user space. If the NAN instance is tied to the owner, the notifications will be sent to the socket that started the NAN interface only. Signed-off-by: Andrei Otcheretianski Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

cfg80211: allow the user space to change current NAN configuration

2016-09-30T11:21:28Z

Some NAN configuration paramaters may change during the operation of the NAN device. For example, a user may want to update master preference value when the device gets plugged/unplugged to the power. Add API that allows to do so. Signed-off-by: Andrei Otcheretianski Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

cfg80211: add add_nan_func / del_nan_func

2016-09-30T11:21:23Z

A NAN function can be either publish, subscribe or follow up. Make all the necessary verifications and just pass the request to the driver. Allow the user space application that starts NAN to forbid any other socket to add or remove functions. Signed-off-by: Andrei Otcheretianski Signed-off-by: Emmanuel Grumbach Signed-off-by: Ayala Beker Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg