linux-kernel - [PATCH v3 10/32] staging: wfx: fix support for CSA

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Date:   Mon, 13 Sep 2021 15:01:41 +0200
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jérôme Pouiller 
        <jerome.pouiller@...abs.com>
Subject: [PATCH v3 10/32] staging: wfx: fix support for CSA

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

The WF200 is able to filter beacons. However, it uses a positive filter:
any change to an IE not listed won't be reported.

In current code, the changes in Channel Switch Announcement (CSA) are
not reported to the host. Thus, it fixes the support for CSA in station
mode.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/sta.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index aff0559653bf..5f2f8900ce99 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -80,13 +80,18 @@ static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon)
 			.has_changed  = 1,
 			.no_longer    = 1,
 			.has_appeared = 1,
+		}, {
+			.ie_id        = WLAN_EID_CHANNEL_SWITCH,
+			.has_changed  = 1,
+			.no_longer    = 1,
+			.has_appeared = 1,
 		}
 	};
 
 	if (!filter_beacon) {
 		hif_beacon_filter_control(wvif, 0, 1);
 	} else {
-		hif_set_beacon_filter_table(wvif, 3, filter_ies);
+		hif_set_beacon_filter_table(wvif, ARRAY_SIZE(filter_ies), filter_ies);
 		hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0);
 	}
 }
-- 
2.33.0