linux-stable.git/drivers/net/wireless, branch v4.19.26

ath9k: dynack: check da->enabled first in sampling routines

2019-02-12T18:47:27+00:00

commit 9d3d65a91f027b8a9af5e63752d9b78cb10eb92d upstream.

Check da->enabled flag first in ath_dynack_sample_tx_ts and
ath_dynack_sample_ack_ts routines in order to avoid useless
processing

Tested-by: Koen Vandeputte 
Signed-off-by: Lorenzo Bianconi 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath9k: dynack: make ewma estimation faster

2019-02-12T18:47:27+00:00

commit 0c60c490830a1a756c80f8de8d33d9c6359d4a36 upstream.

In order to make propagation time estimation faster,
use current sample as ewma output value during 'late ack'
tracking

Tested-by: Koen Vandeputte 
Signed-off-by: Lorenzo Bianconi 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: mvm: fix setting HE ppe FW config

2019-02-12T18:47:14+00:00

[ Upstream commit 189b8d441b0f7825f0b4278851c52afaa0515ed2 ]

The FW expects to get the ppe value for each NSS-BW pair in the same
format as in the he phy capabilities IE, which means that a value of 0
implies ppe should be used for BPSK (mcs 0). If there are no PPE
thresholds in the IE, or if for some NSS-RU pair there's no threshold
set for it (this could happen because it's a variable-sized field), it
means no PPE should not be used for that pair, so the value sent to FW
should be 7 which corresponds to "none".

Fixes: 514c30696fbc ("iwlwifi: add support for IEEE802.11ax")
Signed-off-by: Naftali Goldstein 
Signed-off-by: Luca Coelho 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin

cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()

2019-02-12T18:47:13+00:00

[ Upstream commit 4f68ef64cd7feb1220232bd8f501d8aad340a099 ]

The function cw1200_bss_info_changed() and cw1200_hw_scan() can be
concurrently executed.
The two functions both access a possible shared variable "frame.skb".

This shared variable is freed by dev_kfree_skb() in cw1200_upload_beacon(),
which is called by cw1200_bss_info_changed(). The free operation is
protected by a mutex lock "priv->conf_mutex" in cw1200_bss_info_changed().

In cw1200_hw_scan(), this shared variable is accessed without the
protection of the mutex lock "priv->conf_mutex".
Thus, concurrency use-after-free bugs may occur.

To fix these bugs, the original calls to mutex_lock(&priv->conf_mutex) and
mutex_unlock(&priv->conf_mutex) are moved to the places, which can
protect the accesses to the shared variable.

Signed-off-by: Jia-Ju Bai 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin

mt76x0: dfs: fix IBI_R11 configuration on non-radar channels

2019-02-12T18:47:04+00:00

[ Upstream commit 6bf4a8e902aad7df55d7f2b10b850cfa3f880996 ]

Fix IBI_R11 configuration on non-radar channels for mt76x0e
driver. This patch improve system stability under heavy load.
Moreover use IBI_R11 name and remove magic numbers for
0x212c register

Fixes: 0c3b3abc9251 ("mt76x0: pci: add DFS support")
Signed-off-by: Lorenzo Bianconi 
Signed-off-by: Felix Fietkau 
Signed-off-by: Sasha Levin

iwlwifi: fw: do not set sgi bits for HE connection

2019-02-12T18:46:59+00:00

[ Upstream commit 5c2dbebb446539eb9640bf59a02756d6e7f1fc53 ]

If the association supports HE, HT/VHT rates will never be used for Tx
and therefore there's no need to set the sgi-per-channel-width-support
bits, so don't set them in this case.

Fixes: 110b32f065f3 ("iwlwifi: mvm: rs: add basic implementation of the new RS API handlers")
Signed-off-by: Naftali Goldstein 
Signed-off-by: Luca Coelho 
Signed-off-by: Sasha Levin

ath9k: dynack: use authentication messages for 'late' ack

2019-02-12T18:46:58+00:00

[ Upstream commit 3831a2a0010c72e3956020cbf1057a1701a2e469 ]

In order to properly support dynack in ad-hoc mode running
wpa_supplicant, take into account authentication frames for
'late ack' detection. This patch has been tested on devices
mounted on offshore high-voltage stations connected through
~24Km link

Reported-by: Koen Vandeputte 
Tested-by: Koen Vandeputte 
Signed-off-by: Lorenzo Bianconi 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin

ath10k: assign 'n_cipher_suites' for WCN3990

2019-02-12T18:46:58+00:00

[ Upstream commit 2bd345cd2bfc0bd44528896313c0b45f087bdf67 ]

Commit 2ea9f12cefe4 ("ath10k: add new cipher suite support") added a new
n_cipher_suites HW param with a fallback value and a warning log. Commit
03a72288c546 ("ath10k: wmi: add hw params entry for wcn3990") later
added WCN3990 HW entries, but it missed the n_cipher_suites.

Rather than seeing this warning every boot

  ath10k_snoc 18800000.wifi: invalid hw_params.n_cipher_suites 0

let's provide the appropriate value.

Cc: Rakesh Pillai 
Cc: Govind Singh 
Signed-off-by: Brian Norris 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin

wil6210: fix memory leak in wil_find_tx_bcast_2

2019-02-12T18:46:57+00:00

[ Upstream commit 664497400c89a4d40aee51bcf48bbd2e4dc71104 ]

A successful call to wil_tx_ring takes skb reference so
it will only be freed in wil_tx_complete. Consume the skb
in wil_find_tx_bcast_2 to prevent memory leak.

Signed-off-by: Lior David 
Signed-off-by: Maya Erez 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin

wil6210: fix reset flow for Talyn-mb

2019-02-12T18:46:57+00:00

[ Upstream commit d083b2e2b7db5cca1791643d036e6597af27f49b ]

With current reset flow, Talyn sometimes get stuck causing PCIe
enumeration to fail. Fix this by removing some reset flow operations
that are not relevant for Talyn.
Setting bit 15 in RGF_HP_CTRL is WBE specific and is not in use for
all wil6210 devices.
For Sparrow, BIT_HPAL_PERST_FROM_PAD and BIT_CAR_PERST_RST were set
as a WA an HW issue.

Signed-off-by: Alexei Avshalom Lazar 
Signed-off-by: Maya Erez 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin