kernel/linux.git/net/mac80211/mlme.c, branch linux-4.7.y

mac80211: remove disconnected APs from BSS table

2016-05-12T09:14:23+00:00

In some cases, after a sudden AP disappearing and reconnection to another AP in the same ESS, user space gets the old AP in scan results (cached). User space may decide to roam to that old AP which will cause a disconnection and longer recovery. Remove APs that are probably out of range from BSS table. Signed-off-by: David Spinadel Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

cfg80211: remove enum ieee80211_band

2016-04-12T13:56:15+00:00

This enum is already perfectly aliased to enum nl80211_band, and the only reason for it is that we get IEEE80211_NUM_BANDS out of it. There's no really good reason to not declare the number of bands in nl80211 though, so do that and remove the cfg80211 one. Signed-off-by: Johannes Berg

mac80211: add fast-rx path

2016-04-06T11:18:18+00:00

The regular RX path has a lot of code, but with a few assumptions on the hardware it's possible to reduce the amount of code significantly. Currently the assumptions on the driver are the following: * hardware/driver reordering buffer (if supporting aggregation) * hardware/driver decryption & PN checking (if using encryption) * hardware/driver did de-duplication * hardware/driver did A-MSDU deaggregation * AP_LINK_PS is used (in AP mode) * no client powersave handling in mac80211 (in client mode) of which some are actually checked per packet: * de-duplication * PN checking * decryption and additionally packets must * not be A-MSDU (have been deaggregated by driver/device) * be data packets * not be fragmented * be unicast * have RFC 1042 header Additionally dynamically we assume: * no encryption or CCMP/GCMP, TKIP/WEP/other not allowed * station must be authorized * 4-addr format not enabled Some data needed for the RX path is cached in a new per-station "fast_rx" structure, so that we only need to look at this and the packet, no other memory when processing packets on the fast RX path. After doing the above per-packet checks, the data path collapses down to a pretty simple conversion function taking advantage of the data cached in the small fast_rx struct. This should speed up the RX processing, and will make it easier to reason about parallelizing RX (for which statistics will need to be per-CPU still.) Signed-off-by: Johannes Berg

mac80211: avoid useless memory write on each frame RX

2016-04-05T19:34:21+00:00

In the likely case that probe_count is 0, don't write to the memory there. Also use ifmgd consistently in the function, instead of using sdata->u.mgd as well. Signed-off-by: Johannes Berg Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg

Merge tag 'mac80211-next-for-davem-2016-02-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2016-03-01T22:03:27+00:00

Johannes Berg says: ==================== Here's another round of updates for -next: * big A-MSDU RX performance improvement (avoid linearize of paged RX) * rfkill changes: cleanups, documentation, platform properties * basic PBSS support in cfg80211 * MU-MIMO action frame processing support * BlockAck reordering & duplicate detection offload support * various cleanups & little fixes ==================== Signed-off-by: David S. Miller

mac80211: move MU_MIMO_OWNER flag to ieee80211_vif

2016-02-24T08:04:40+00:00

Drivers may need to track which vif is using VHT MU-MIMO. Move the flag indicationg the ownership of MU_MIMO to ieee80211_vif. Signed-off-by: Sara Sharon Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg

mac80211: always print a message when disconnecting

2016-02-24T08:04:28+00:00

Make sure there's at least a debug message whenever the connection to the AP is terminated. Also change one message from wiphy_debug() to the common mlme_dbg(). Signed-off-by: Johannes Berg

mac80211: refactor HT/VHT to chandef code

2016-02-24T08:04:21+00:00

The station MLME and IBSS/mesh ones use entirely different code for interpreting HT and VHT operation elements. Change the code that interprets them a bit - it now modifies an existing chandef - and use it also in the MLME code. Signed-off-by: Johannes Berg

mac80211: Requeue work after scan complete for all VIF types.

2016-01-26T10:27:39+00:00

During a sw scan ieee80211_iface_work ignores work items for all vifs. However after the scan complete work is requeued only for STA, ADHOC and MESH iftypes. This occasionally results in event processing getting delayed/not processed for iftype AP when it coexists with a STA. This can result in data halt and eventually disconnection on the AP interface. Cc: stable@vger.kernel.org Signed-off-by: Sachin Kulkarni Signed-off-by: Johannes Berg

cfg80211/mac80211: use to_delayed_work

2016-01-14T10:13:15+00:00

Use to_delayed_work() instead of open-coding it. Signed-off-by: Geliang Tang Signed-off-by: Johannes Berg