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  1. 17 Mar, 2020 2 commits
    • Manikanta Pubbisetty's avatar
      ath11k: enable PN offload · 1441b2f2
      Manikanta Pubbisetty authored 
      Enabling PN checking in the hardware; hardware checks
the PN of the received packets and reports the errors
to the host for further handling; default action is to
drop such packets. TSC (TKIP sequence counter)
validation is also offloaded.

Hardware validates PN/TSC only for unicast packets;
for group addressed packets, PN validation is done
in mac80211.

PN errors are reported to the driver via WBM RX release
ring and can be dumped by using the following command.

"cat /sys/kernel/debug/ath11k/soc_rx_stats | grep -i pn"

Sample Output:
PN check fail: 210
Signed-off-by: default avatarManikanta Pubbisetty <mpubbise@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      1441b2f2
    • Manikanta Pubbisetty's avatar
      ath11k: handle RX fragments · 243874c6
      Manikanta Pubbisetty authored 
      IPQ8074 HW has support to verify the PN of the received frames.
For all frames except for fragmented ones, HW checks the PN and
delivers them to the driver. For fragmented frames, driver is
required to do a little more; it has to reassemble the fragments
and then reinject them to the HW for verifying the PN. Currently,
to keep the logic simple, PN verifcation is disabled in HW and is
handled in mac80211 for all the frames (fragmented and unfragmented).

On the contrary, offloading PN Validation to the HW brings important
benefits. It reduces CPU cycles spent on the host CPU for verifying
the same; helps in enabling features which improve performance like
mac80211 fast RX path, enabling multiple REO rings for parallel RX
processing, 802.11 decapsulation offloading. All these features are
dependent on PN offload which in turn is dependent on handling of
the received fragments in the driver.

When TKIP security is used, additional handling is required while
processing the fragments; since MIC is computed on an MSDU in TKIP,
only the last fragment has the MIC info. In this case, driver has to
compute the MIC after reassembly and compare it against the MIC
present in the frame. For this, MICHAEL_MIC kernel crypto library
APIs are used and the dependencies are appropriately set.
Signed-off-by: default avatarManikanta Pubbisetty <mpubbise@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      243874c6
  3. 16 Mar, 2020 1 commit
  5. 12 Mar, 2020 31 commits
  7. 11 Mar, 2020 6 commits
    • tangbin's avatar
      ftgmac100: Remove redundant judgement · 86eeb97d
      tangbin authored 
      In this function, ftgmac100_probe() can be triggered only
if the platform_device and platform_driver matches, so the
judgement at the beginning is redundant.
Signed-off-by: default avatartangbin <tangbin@cmss.chinamobile.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      86eeb97d
    • Remi Pommarel's avatar
      ath9k: Handle txpower changes even when TPC is disabled · 968ae2ca
      Remi Pommarel authored 
      When TPC is disabled IEEE80211_CONF_CHANGE_POWER event can be handled to
reconfigure HW's maximum txpower.

This fixes 0dBm txpower setting when user attaches to an interface for
the first time with the following scenario:

ieee80211_do_open()
    ath9k_add_interface()
        ath9k_set_txpower() /* Set TX power with not yet initialized
                               sc->hw->conf.power_level */

    ieee80211_hw_config() /* Iniatilize sc->hw->conf.power_level and
                             raise IEEE80211_CONF_CHANGE_POWER */

    ath9k_config() /* IEEE80211_CONF_CHANGE_POWER is ignored */

This issue can be reproduced with the following:

  $ modprobe -r ath9k
  $ modprobe ath9k
  $ wpa_supplicant -i wlan0 -c /tmp/wpa.conf &
  $ iw dev /* Here TX power is either 0 or 3 depending on RF chain */
  $ killall wpa_supplicant
  $ iw dev /* TX power goes back to calibrated value and subsequent
              calls will be fine */

Fixes: 283dd119 ("ath9k: add per-vif TX power capability")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarRemi Pommarel <repk@triplefau.lt>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      968ae2ca
    • Krzysztof Kozlowski's avatar
      ath5k: Add proper dependency for ATH5K_AHB · c98cdaef
      Krzysztof Kozlowski authored 
      The CONFIG_ATH5K_AHB could be enabled on ATH25 system without enabling
ATH5K driver itself.  This does not make sense because CONFIG_ATH5K_AHB
controls object build within drivers/net/wireless/ath/ath5k/ so enabling
it without CONFIG_ATH5K brings nothing.

Add proper dependency to CONFIG_ATH5K_AHB.
Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      c98cdaef
    • Pradeep Kumar Chitrapu's avatar
      ath11k: add thermal sensor device support · a41d1034
      Pradeep Kumar Chitrapu authored 
      Temperature sensor generates electrical analog voltage from temperature
of each chain. The analog voltage is converted to digital value through
ADC. For reading temperature values fom user space, hw monitoring device
is used.

Whenever the user requests for current temperature, the driver sends WMI
command and wait for response. For reading temperature,

cat /sys/class/ieee80211/phy*/device/hwmon/hwmon2/temp1_input
Signed-off-by: default avatarPradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      a41d1034
    • Pradeep Kumar Chitrapu's avatar
      ath11k: add thermal cooling device support · 2a63bbca
      Pradeep Kumar Chitrapu authored 
      Thermal cooling device support is added to control the temperature by
throttling the data transmission for the given duration. Throttling is
done by suspending all data tx queues by given percentage of time. The
thermal device allows user to configure duty cycle.

Throttling can be disabled by setting the duty cycle to 0. The cooling
device can be found under /sys/class/thermal/cooling_deviceX/.
Corresponding soft link to this device can be found under phy folder.

/sys/class/ieee80211/phy*/device/cooling_device.

To set duty cycle as 40%,

echo 40 >/sys/class/ieee80211/phy*/device/cooling_device/cur_state
Signed-off-by: default avatarPradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      2a63bbca
    • Yibo Zhao's avatar
      ath10k: fix not registering airtime of 11a station with WMM disable · f9680c75
      Yibo Zhao authored 
      The tid of 11a station with WMM disable reported by FW is 0x10 in
tx completion. The tid 16 is mapped to a NULL txq since buffer
MMPDU capbility is not supported. Then 11a station's airtime will
not be registered due to NULL txq check. As a results, airtime of
11a station keeps unchanged in debugfs system.

Mask the tid along with IEEE80211_QOS_CTL_TID_MASK to make it in
the valid range.

Hardwares tested : QCA9984
Firmwares tested : 10.4-3.10-00047
Signed-off-by: default avatarYibo Zhao <yiboz@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      f9680c75
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