Patch "mac80211_hwsim: use per-interface power level" has been added to the 4.9-stable tree

[<gregkh@linuxfoundation.org>]

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;a=summary

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