linux.git/net/wireless/scan.c, branch v5.11

cfg80211: Update TSF and TSF BSSID for multi BSS

2020-12-11T11:57:02+00:00

When a new BSS entry is created based on multi BSS IE, the
TSF and the TSF BSSID were not updated. Fix it.

Signed-off-by: Ilan Peer 
Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.8377d5063827.I6f2011b6017c2ad507c61a3f1ca03b7177a46e32@changeid
Signed-off-by: Johannes Berg

cfg80211: scan PSC channels in case of scan with wildcard SSID

2020-12-11T11:55:16+00:00

In case of scan request with wildcard SSID, or in case of more
than one SSID in scan request, need to scan PSC channels even though
all the co-located APs found during the legacy bands scan indicated
that all the APs in their ESS are co-located, as we might find different
networks on the PSC channels.

Signed-off-by: Ayala Beker 
Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.736415a9ca5d.If5b3578ae85e11a707a5da07e66ba85928ba702c@changeid
Signed-off-by: Johannes Berg

nl80211/cfg80211: fix potential infinite loop

2020-11-06T09:02:24+00:00

The for-loop iterates with a u8 loop counter and compares this
with the loop upper limit of request->n_ssids which is an int type.
There is a potential infinite loop if n_ssids is larger than the
u8 loop counter, so fix this by making the loop counter an int.

Addresses-Coverity: ("Infinite loop")
Fixes: c8cb5b854b40 ("nl80211/cfg80211: support 6 GHz scanning")
Signed-off-by: Colin Ian King 
Link: https://lore.kernel.org/r/20201029222407.390218-1-colin.king@canonical.com
Signed-off-by: Johannes Berg

cfg80211: parse S1G Operation element for BSS channel

2020-09-28T11:53:05+00:00

Extract the BSS primary channel from the S1G Operation
element.

Signed-off-by: Thomas Pedersen 
Link: https://lore.kernel.org/r/20200922022818.15855-7-thomas@adapt-ip.com
[remove the goto bits]
Signed-off-by: Johannes Berg

cfg80211: convert S1G beacon to scan results

2020-09-28T11:53:05+00:00

The S1G beacon is an extension frame as opposed to
management frame for the regular beacon. This means we may
have to occasionally cast the frame buffer to a different
header type. Luckily this isn't too bad as scan results
mostly only care about the IEs.

Signed-off-by: Thomas Pedersen 
Link: https://lore.kernel.org/r/20200922022818.15855-6-thomas@adapt-ip.com
Signed-off-by: Johannes Berg

nl80211/cfg80211: support 6 GHz scanning

2020-09-28T11:53:04+00:00

Support 6 GHz scanning, by
 * a new scan flag to scan for colocated BSSes advertised
   by (and found) APs on 2.4 & 5 GHz
 * doing the necessary reduced neighbor report parsing for
   this, to find them
 * adding the ability to split the scan request in case the
   device by itself cannot support this.

Also add some necessary bits in mac80211 to not break with
these changes.

Signed-off-by: Tova Mussai 
Signed-off-by: Johannes Berg 
Link: https://lore.kernel.org/r/20200918113313.232917c93af9.Ida22f0212f9122f47094d81659e879a50434a6a2@changeid
Signed-off-by: Johannes Berg

net: wireless: Convert to use the preferred fallthrough macro

2020-08-27T09:24:28+00:00

Convert the uses of fallthrough comments to fallthrough macro.

Signed-off-by: Miaohe Lin 
Link: https://lore.kernel.org/r/20200822082323.45495-1-linmiaohe@huawei.com
Signed-off-by: Johannes Berg

net: wireless: scan.c: delete or fix duplicated words

2020-08-27T09:23:26+00:00

Drop repeated word "stored".
Change "is is" to "it is".

Signed-off-by: Randy Dunlap 
Cc: Johannes Berg 
Cc: Kalle Valo 
Cc: linux-wireless@vger.kernel.org
Link: https://lore.kernel.org/r/20200822231953.465-6-rdunlap@infradead.org
Signed-off-by: Johannes Berg

cfg80211: allow the low level driver to flush the BSS table

2020-07-31T07:24:23+00:00

The low level driver adds its own opaque information
in the BSS table in the cfg80211_bss structure.

The low level driver may need to signal that this information
is no longer relevant and needs to be recreated.
Add an API to allow the low level driver to do that.

iwlwifi needs this because it keeps there an information about
the firmware's internal clock. This is kept in mac80211's
struct ieee80211_bss::sync_device_ts.
This information is populated while we scan, we add the
internal firmware's clock to each beacon which allows us to
program the firmware correctly after association so that
it'll know when (in terms of its internal clock) the DTIM
and TBTT will happen.

When the firmware is reset this internal clock is reset as
well and ieee80211_bss::sync_device_ts is no longer accurate.

iwlwifi will call this new API any time the firmware is started.

Signed-off-by: Emmanuel Grumbach 
Link: https://lore.kernel.org/r/20200625111524.3992-1-emmanuel.grumbach@intel.com
Signed-off-by: Johannes Berg

cfg80211: express channels with a KHz component

2020-04-24T10:33:43+00:00

Some bands (S1G) define channels centered on a non-integer
MHz. Give ieee80211_channel and cfg80211_chan_def a
freq_offset component where the final frequency can be
expressed as:

MHZ_TO_KHZ(chan->center_freq) + chan->freq_offset;

Also provide some helper functions to do the frequency
conversion and test for equality.

Retain the existing interface to frequency and channel
conversion helpers, and expose new ones which handle
frequencies in units of KHz.

Some internal functions (net/wireless/chan.c) pass around
a frequency value. Convert these to units of KHz.

mesh, ibss, wext, etc. are currently ignored.

Signed-off-by: Thomas Pedersen 
Link: https://lore.kernel.org/r/20200402011810.22947-3-thomas@adapt-ip.com
Signed-off-by: Johannes Berg