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From:   P Praneesh <ppranees@codeaurora.org>
To:     johannes@sipsolutions.net
Cc:     linux-wireless@vger.kernel.org,
        P Praneesh <ppranees@codeaurora.org>
Subject: [PATCH] [v3] mac80211: avoid bss color setting in non-he mode
Date:   Thu,  9 Jul 2020 08:16:21 +0530
Message-Id: <1594262781-21444-1-git-send-email-ppranees@codeaurora.org>
Sender: linux-wireless-owner@vger.kernel.org
Precedence: bulk

Adding bss-color configuration for HE mode alone.
Earlier we have enabled it by default, irrespective
of capabilities. But bss-color feature is only for
HE mode. Hence avoiding this by adding bss-color flag
only for HE mode.

Fixes: eb024f1abca3("mac80211: avoid bss color setting in non-he mode")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Signed-off-by: P Praneesh <ppranees@codeaurora.org>
---
v3:
	-fixed compilation error, reported by kernel test robot.
v2:
	-addressed Rajkumar's comments.
	-moved remaining HE flags under
	 corresponding check.
---
 net/mac80211/cfg.c     | 8 +++++---
 net/mac80211/mlme.c    | 4 +++-
 net/wireless/nl80211.c | 3 +++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 9b36054..4b98c8f 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -991,9 +991,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 		      BSS_CHANGED_SSID |
 		      BSS_CHANGED_P2P_PS |
 		      BSS_CHANGED_TXPOWER |
-		      BSS_CHANGED_TWT |
-		      BSS_CHANGED_HE_OBSS_PD |
-		      BSS_CHANGED_HE_BSS_COLOR;
+		      BSS_CHANGED_TWT;
 	int i, err;
 	int prev_beacon_int;
 
@@ -1019,6 +1017,10 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 		sdata->vif.bss_conf.frame_time_rts_th =
 			le32_get_bits(params->he_oper->he_oper_params,
 			      IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
+		changed |= BSS_CHANGED_HE_OBSS_PD;
+
+		if (!params->he_bss_color.disabled)
+			changed |= BSS_CHANGED_HE_BSS_COLOR;
 	}
 
 	mutex_lock(&local->mtx);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b2a9d47..eb257bb 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3463,7 +3463,9 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 		bss_conf->he_bss_color.disabled =
 			le32_get_bits(elems->he_operation->he_oper_params,
 				      IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
-		changed |= BSS_CHANGED_HE_BSS_COLOR;
+
+		if (!bss_conf->he_bss_color.disabled)
+			changed |= BSS_CHANGED_HE_BSS_COLOR;
 
 		bss_conf->htc_trig_based_pkt_ext =
 			le32_get_bits(elems->he_operation->he_oper_params,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 263ae39..29b15dd 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5019,6 +5019,9 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
+	/* disabling BSS color default */
+	params.he_bss_color.disabled = true;
+
 	if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
 		err = nl80211_parse_he_bss_color(
 					info->attrs[NL80211_ATTR_HE_BSS_COLOR],
-- 
2.7.4