linux-kernel - [PATCH 01/17] staging: wfx: fix (future) TDLS support

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Message-Id: <20200427134031.323403-2-Jerome.Pouiller@silabs.com>
Date:   Mon, 27 Apr 2020 15:40:15 +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 01/17] staging: wfx: fix (future) TDLS support

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

The device does not expect that the AP to have a link-id. However, TDLS
peers should have a a link-id.

The driver does not yet declare itself as supporting TDLS.
Notwithstanding, fix the code in anticipation of the support of TDLS.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/sta.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index f3e106f7eeac..2262e1de37f6 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -384,9 +384,8 @@ int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	spin_lock_init(&sta_priv->lock);
 	sta_priv->vif_id = wvif->id;
 
-	// FIXME: in station mode, the current API interprets new link-id as a
-	// tdls peer.
-	if (vif->type == NL80211_IFTYPE_STATION)
+	// In station mode, the firmware interprets new link-id as a TDLS peer.
+	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
 		return 0;
 	sta_priv->link_id = ffz(wvif->link_id_map);
 	wvif->link_id_map |= BIT(sta_priv->link_id);
@@ -408,8 +407,8 @@ int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		if (sta_priv->buffered[i])
 			dev_warn(wvif->wdev->dev, "release station while %d pending frame on queue %d",
 				 sta_priv->buffered[i], i);
-	// FIXME: see note in wfx_sta_add()
-	if (vif->type == NL80211_IFTYPE_STATION)
+	// See note in wfx_sta_add()
+	if (!sta_priv->link_id)
 		return 0;
 	// FIXME add a mutex?
 	hif_map_link(wvif, sta->addr, 1, sta_priv->link_id);
-- 
2.26.1