netdev - [PATCH AUTOSEL 4.19 102/209] qtnfmac: request userspace to do OBSS scanning if FW can not

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Date:   Tue, 12 Nov 2019 20:48:38 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Igor Mitsyanko <igor.mitsyanko.os@...ntenna.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 102/209] qtnfmac: request userspace to do OBSS scanning if FW can not

From: Igor Mitsyanko <igor.mitsyanko.os@...ntenna.com>

[ Upstream commit 92246b126ebf66ab1fec9d631df78d7c675b66db ]

In case firmware reports that it can not do OBSS scanning for 40MHz
2.4GHz channels itself, tell userpsace to do that instead by setting
NL80211_FEATURE_NEED_OBSS_SCAN flag.

Signed-off-by: Igor mitsyanko <igor.mitsyanko.os@...ntenna.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 3 +++
 drivers/net/wireless/quantenna/qtnfmac/qlink.h    | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 4aa332f4646b1..1519d986b74a4 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -1109,6 +1109,9 @@ int qtnf_wiphy_register(struct qtnf_hw_info *hw_info, struct qtnf_wmac *mac)
 	if (hw_info->hw_capab & QLINK_HW_CAPAB_SCAN_RANDOM_MAC_ADDR)
 		wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 
+	if (!(hw_info->hw_capab & QLINK_HW_CAPAB_OBSS_SCAN))
+		wiphy->features |= NL80211_FEATURE_NEED_OBSS_SCAN;
+
 #ifdef CONFIG_PM
 	if (macinfo->wowlan)
 		wiphy->wowlan = macinfo->wowlan;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
index 99d37e3efba63..c5ae4ea9a47a9 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
@@ -71,6 +71,7 @@ struct qlink_msg_header {
  * @QLINK_HW_CAPAB_DFS_OFFLOAD: device implements DFS offload functionality
  * @QLINK_HW_CAPAB_SCAN_RANDOM_MAC_ADDR: device supports MAC Address
  *	Randomization in probe requests.
+ * @QLINK_HW_CAPAB_OBSS_SCAN: device can perform OBSS scanning.
  */
 enum qlink_hw_capab {
 	QLINK_HW_CAPAB_REG_UPDATE		= BIT(0),
@@ -78,6 +79,7 @@ enum qlink_hw_capab {
 	QLINK_HW_CAPAB_DFS_OFFLOAD		= BIT(2),
 	QLINK_HW_CAPAB_SCAN_RANDOM_MAC_ADDR	= BIT(3),
 	QLINK_HW_CAPAB_PWR_MGMT			= BIT(4),
+	QLINK_HW_CAPAB_OBSS_SCAN		= BIT(5),
 };
 
 enum qlink_iface_type {
-- 
2.20.1