This is a note to let you know that I've just added the patch titled

mac80211_hwsim: use per-interface power level

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: mac80211_hwsim-use-per-interface-power-level.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Sun Mar 18 16:55:33 CET 2018

From: Johannes Berg johannes.berg@intel.com Date: Thu, 13 Apr 2017 10:31:16 +0200 Subject: mac80211_hwsim: use per-interface power level

From: Johannes Berg johannes.berg@intel.com

[ Upstream commit 1d5e9f80ab021e3e1f9436627a4ad07a143ccb2c ]

When channel contexts are used, there's no global power level (the power_level is always 0). Use the per-interface TX power in mac80211_hwsim to have a proper setting for both cases.

This fixes the bgscan_simple and bgscan_learn test cases when the number of channels advertised by hwsim is >1 by default.

Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/mac80211_hwsim.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -552,8 +552,6 @@ struct mac80211_hwsim_data { /* wmediumd portid responsible for netgroup of this radio */ u32 wmediumd;

- int power_level; - /* difference between this hw's clock and the real clock, in usecs */ s64 tsf_offset; s64 bcn_delta; @@ -1208,7 +1206,9 @@ static bool mac80211_hwsim_tx_frame_no_n if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) rx_status.flag |= RX_FLAG_SHORT_GI; /* TODO: simulate real signal strength (and optional packet loss) */ - rx_status.signal = data->power_level - 50; + rx_status.signal = -50; + if (info->control.vif) + rx_status.signal += info->control.vif->bss_conf.txpower;

if (data->ps != PS_DISABLED) hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); @@ -1607,7 +1607,6 @@ static int mac80211_hwsim_config(struct

WARN_ON(data->channel && data->use_chanctx);

- data->power_level = conf->power_level; if (!data->started || !data->beacon_int) tasklet_hrtimer_cancel(&data->beacon_timer); else if (!hrtimer_is_queued(&data->beacon_timer.timer)) { @@ -2212,7 +2211,6 @@ static const char mac80211_hwsim_gstring "d_tx_failed", "d_ps_mode", "d_group", - "d_tx_power", };

#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats) @@ -2249,7 +2247,6 @@ static void mac80211_hwsim_get_et_stats( data[i++] = ar->tx_failed; data[i++] = ar->ps; data[i++] = ar->group; - data[i++] = ar->power_level;

WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN); }

Patches currently in stable-queue which might be from johannes.berg@intel.com are

queue-4.9/mac80211-remove-bug-when-interface-type-is-invalid.patch queue-4.9/mac80211_hwsim-enforce-ps_manual_poll-to-be-set-after-ps_enabled.patch queue-4.9/mac80211_hwsim-use-per-interface-power-level.patch queue-4.9/iwlwifi-mvm-fix-rx-skb-header-size-and-align-it-properly.patch