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From:   Rui Salvaterra <rsalvaterra@gmail.com>
To:     johannes@sipsolutions.net
Cc:     stf_xl@wp.pl, julian.calaby@gmail.com, kvalo@codeaurora.org,
        Larry.Finger@lwfinger.net, linux-wireless@vger.kernel.org,
        Rui Salvaterra <rsalvaterra@gmail.com>
Subject: [PATCH v2] rt2800: enable MFP support unconditionally
Date:   Mon, 25 May 2020 14:49:07 +0100
Message-Id: <20200525134906.1672-1-rsalvaterra@gmail.com>
MIME-Version: 1.0
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Sender: linux-wireless-owner@vger.kernel.org
Precedence: bulk

v2: fixed null pointer.

This gives us WPA3 support out of the box without having to manually disable
hardware crypto. The driver will fall back to software crypto if the connection
requires management frame protection.

Suggested-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
---
 drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 4 +---
 drivers/net/wireless/ralink/rt2x00/rt2x00mac.c | 3 ++-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 6beac1f74e7c..a779fe771a55 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -9971,9 +9971,7 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	if (!rt2x00_is_usb(rt2x00dev))
 		ieee80211_hw_set(rt2x00dev->hw, HOST_BROADCAST_PS_BUFFERING);
 
-	/* Set MFP if HW crypto is disabled. */
-	if (rt2800_hwcrypt_disabled(rt2x00dev))
-		ieee80211_hw_set(rt2x00dev->hw, MFP_CAPABLE);
+	ieee80211_hw_set(rt2x00dev->hw, MFP_CAPABLE);
 
 	SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
 	SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
index 32efbc8e9f92..2f68a31072ae 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
@@ -468,7 +468,8 @@ int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		return 0;
 
-	if (!rt2x00_has_cap_hw_crypto(rt2x00dev))
+	/* The hardware can't do MFP */
+	if (!rt2x00_has_cap_hw_crypto(rt2x00dev) || (sta && sta->mfp))
 		return -EOPNOTSUPP;
 
 	/*
-- 
2.26.2