linux.git/net/wireless, branch v5.11-rc2

Merge tag 'mac80211-next-for-net-next-2020-12-11' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2020-12-12T18:07:56+00:00

Johannes Berg says:

====================
A new set of wireless changes:
 * validate key indices for key deletion
 * more preamble support in mac80211
 * various 6 GHz scan fixes/improvements
 * a common SAR power limitations API
 * various small fixes & code improvements

* tag 'mac80211-next-for-net-next-2020-12-11' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (35 commits)
  mac80211: add ieee80211_set_sar_specs
  nl80211: add common API to configure SAR power limitations
  mac80211: fix a mistake check for rx_stats update
  mac80211: mlme: save ssid info to ieee80211_bss_conf while assoc
  mac80211: Update rate control on channel change
  mac80211: don't filter out beacons once we start CSA
  mac80211: Fix calculation of minimal channel width
  mac80211: ignore country element TX power on 6 GHz
  mac80211: use bitfield helpers for BA session action frames
  mac80211: support Rx timestamp calculation for all preamble types
  mac80211: don't set set TDLS STA bandwidth wider than possible
  mac80211: support driver-based disconnect with reconnect hint
  cfg80211: support immediate reconnect request hint
  mac80211: use struct assignment for he_obss_pd
  cfg80211: remove struct ieee80211_he_bss_color
  nl80211: validate key indexes for cfg80211_registered_device
  cfg80211: include block-tx flag in channel switch started event
  mac80211: disallow band-switch during CSA
  ieee80211: update reduced neighbor report TBTT info length
  cfg80211: Save the regulatory domain when setting custom regulatory
  ...
====================

Link: https://lore.kernel.org/r/20201211142552.209018-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2020-12-12T06:29:38+00:00

xdp_return_frame_bulk() needs to pass a xdp_buff
to __xdp_return().

strlcpy got converted to strscpy but here it makes no
functional difference, so just keep the right code.

Conflicts:
	net/netfilter/nf_tables_api.c

Signed-off-by: Jakub Kicinski

nl80211: add common API to configure SAR power limitations

2020-12-11T12:38:54+00:00

NL80211_CMD_SET_SAR_SPECS is added to configure SAR from
user space. NL80211_ATTR_SAR_SPEC is used to pass the SAR
power specification when used with NL80211_CMD_SET_SAR_SPECS.

Wireless driver needs to register SAR type, supported frequency
ranges to wiphy, so user space can query it. The index in
frequency range is used to specify which sub band the power
limitation applies to. The SAR type is for compatibility, so later
other SAR mechanism can be implemented without breaking the user
space SAR applications.

Normal process is user space queries the SAR capability, and
gets the index of supported frequency ranges and associates the
power limitation with this index and sends to kernel.

Here is an example of message send to kernel:
8c 00 00 00 08 00 01 00 00 00 00 00 38 00 2b 81
08 00 01 00 00 00 00 00 2c 00 02 80 14 00 00 80
08 00 02 00 00 00 00 00 08 00 01 00 38 00 00 00
14 00 01 80 08 00 02 00 01 00 00 00 08 00 01 00
48 00 00 00

NL80211_CMD_SET_SAR_SPECS:  0x8c
NL80211_ATTR_WIPHY:     0x01(phy idx is 0)
NL80211_ATTR_SAR_SPEC:  0x812b (NLA_NESTED)
NL80211_SAR_ATTR_TYPE:  0x00 (NL80211_SAR_TYPE_POWER)
NL80211_SAR_ATTR_SPECS: 0x8002 (NLA_NESTED)
freq range 0 power: 0x38 in 0.25dbm unit (14dbm)
freq range 1 power: 0x48 in 0.25dbm unit (18dbm)

Signed-off-by: Carl Huang 
Reviewed-by: Brian Norris 
Reviewed-by: Abhishek Kumar 
Link: https://lore.kernel.org/r/20201203103728.3034-2-cjhuang@codeaurora.org
[minor edits, NLA parse cleanups]
Signed-off-by: Johannes Berg

cfg80211: support immediate reconnect request hint

2020-12-11T12:20:05+00:00

There are cases where it's necessary to disconnect, but an
immediate reconnection is desired. Support a hint to userspace
that this is the case, by including a new attribute in the
deauth or disassoc event.

Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20201206145305.58d33941fb9d.I0e7168c205c7949529c8e3b86f3c9b12c01a7017@changeid
Signed-off-by: Johannes Berg

nl80211: validate key indexes for cfg80211_registered_device

2020-12-11T12:20:04+00:00

syzbot discovered a bug in which an OOB access was being made because
an unsuitable key_idx value was wrongly considered to be acceptable
while deleting a key in nl80211_del_key().

Since we don't know the cipher at the time of deletion, if
cfg80211_validate_key_settings() were to be called directly in
nl80211_del_key(), even valid keys would be wrongly determined invalid,
and deletion wouldn't occur correctly.
For this reason, a new function - cfg80211_valid_key_idx(), has been
created, to determine if the key_idx value provided is valid or not.
cfg80211_valid_key_idx() is directly called in 2 places -
nl80211_del_key(), and cfg80211_validate_key_settings().

Reported-by: syzbot+49d4cab497c2142ee170@syzkaller.appspotmail.com
Tested-by: syzbot+49d4cab497c2142ee170@syzkaller.appspotmail.com
Suggested-by: Johannes Berg 
Signed-off-by: Anant Thazhemadam 
Link: https://lore.kernel.org/r/20201204215825.129879-1-anant.thazhemadam@gmail.com
Cc: stable@vger.kernel.org
[also disallow IGTK key IDs if no IGTK cipher is supported]
Signed-off-by: Johannes Berg

cfg80211: include block-tx flag in channel switch started event

2020-12-11T11:59:37+00:00

In the NL80211_CMD_CH_SWITCH_STARTED_NOTIFY event, include the
NL80211_ATTR_CH_SWITCH_BLOCK_TX flag attribute if block-tx was
requested by the AP.

Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.8953ef22cc64.Ifee9cab337a4369938545920ba5590559e91327a@changeid
Signed-off-by: Johannes Berg

cfg80211: Save the regulatory domain when setting custom regulatory

2020-12-11T11:57:24+00:00

When custom regulatory was set, only the channels setting was updated, but
the regulatory domain was not saved. Fix it by saving it.

Signed-off-by: Ilan Peer 
Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.290fa5c5568a.Ic5732aa64de6ee97ae3578bd5779fc723ba489d1@changeid
Signed-off-by: Johannes Berg

nl80211: always accept scan request with the duration set

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

Accept a scan request with the duration set even if the driver
does not support setting the scan dwell. The duration can be used
as a hint to the driver, but the driver may use its internal logic
for setting the scan dwell.

Signed-off-by: Avraham Stern 
Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.9491a12f9226.Ia9c5b24fcefc5ce5592537507243391633a27e5f@changeid
Signed-off-by: Johannes Berg

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