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From: Ryder Lee <ryder.lee@mediatek.com>
To: Felix Fietkau <nbd@nbd.name>,
	Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Cc: Roy Luo <royluo@google.com>, YF Luo <yf.luo@mediatek.com>,
	Yiwei Chung <yiwei.chung@mediatek.com>,
	Sean Wang <sean.wang@mediatek.com>,
	Chih-Min Chen <chih-min.Chen@mediatek.com>,
	<linux-wireless@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	Ryder Lee <ryder.lee@mediatek.com>
Subject: [PATCH v3 2/2] mt76: mt7615: fix slow performance when enable encryption
Date: Mon, 3 Jun 2019 14:08:44 +0800	[thread overview]
Message-ID: <429cf8c1421017b4030b8b6e4fa9e5cbea953d3c.1559541944.git.ryder.lee@mediatek.com> (raw)
In-Reply-To: <a1ff446dfc06e2443552e7ec2d754099aacce7df.1559541944.git.ryder.lee@mediatek.com>

Fix wrong WCID assignment and add RKV (RX Key of this entry is valid)
flag to check if peer uses the same configuration with previous
handshaking.

If the configuration is mismatch, WTBL indicates a “cipher mismatch”
to stop SEC decryption to prevent the packet from damage.

Suggested-by: YF Luo <yf.luo@mediatek.com>
Suggested-by: Yiwei Chung <yiwei.chung@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
Changes since v3 - none
Changes since v2 - none
---
 drivers/net/wireless/mediatek/mt76/mt7615/init.c | 16 ++++++++++------
 drivers/net/wireless/mediatek/mt76/mt7615/main.c |  2 +-
 drivers/net/wireless/mediatek/mt76/mt7615/mcu.c  |  1 +
 3 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index f860af6a42da..b3e08154ccbe 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -62,16 +62,11 @@ static void mt7615_mac_init(struct mt7615_dev *dev)
 		 MT_AGG_ARCR_RATE_DOWN_RATIO_EN |
 		 FIELD_PREP(MT_AGG_ARCR_RATE_DOWN_RATIO, 1) |
 		 FIELD_PREP(MT_AGG_ARCR_RATE_UP_EXTRA_TH, 4)));
-
-	dev->mt76.global_wcid.idx = MT7615_WTBL_RESERVED;
-	dev->mt76.global_wcid.hw_key_idx = -1;
-	rcu_assign_pointer(dev->mt76.wcid[MT7615_WTBL_RESERVED],
-			   &dev->mt76.global_wcid);
 }
 
 static int mt7615_init_hardware(struct mt7615_dev *dev)
 {
-	int ret;
+	int ret, idx;
 
 	mt76_wr(dev, MT_INT_SOURCE_CSR, ~0);
 
@@ -98,6 +93,15 @@ static int mt7615_init_hardware(struct mt7615_dev *dev)
 	mt7615_mcu_ctrl_pm_state(dev, 0);
 	mt7615_mcu_del_wtbl_all(dev);
 
+	/* Beacon and mgmt frames should occupy wcid 0 */
+	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1);
+	if (idx)
+		return -ENOSPC;
+
+	dev->mt76.global_wcid.idx = idx;
+	dev->mt76.global_wcid.hw_key_idx = -1;
+	rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
+
 	return 0;
 }
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 585e67fa2728..2cdd339453c8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -95,7 +95,7 @@ static int mt7615_add_interface(struct ieee80211_hw *hw,
 
 	dev->vif_mask |= BIT(mvif->idx);
 	dev->omac_mask |= BIT(mvif->omac_idx);
-	idx = MT7615_WTBL_RESERVED - 1 - mvif->idx;
+	idx = MT7615_WTBL_RESERVED - mvif->idx;
 	mvif->sta.wcid.idx = idx;
 	mvif->sta.wcid.hw_key_idx = -1;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index e82297048449..b3802f18b37b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -882,6 +882,7 @@ int mt7615_mcu_set_wtbl_key(struct mt7615_dev *dev, int wcid,
 		if (cipher == MT_CIPHER_NONE && key)
 			return -EOPNOTSUPP;
 
+		req.key.rkv = 1;
 		req.key.cipher_id = cipher;
 		req.key.key_id = key->keyidx;
 		req.key.key_len = key->keylen;
-- 
2.18.0


  reply	other threads:[~2019-06-03  6:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-03  6:08 [PATCH v3 1/2] mt76: mt7615: enable support for mesh Ryder Lee
2019-06-03  6:08 ` Ryder Lee [this message]
2019-06-07 17:02   ` [PATCH v3 2/2] mt76: mt7615: fix slow performance when enable encryption Felix Fietkau
2019-06-06 10:11 ` [PATCH v3 1/2] mt76: mt7615: enable support for mesh Sebastian Gottschall
2019-06-06 16:19   ` Lorenzo Bianconi
2019-06-07  6:03     ` Sebastian Gottschall
2019-06-09 14:36     ` Sebastian Gottschall
2019-06-10  5:11       ` possible fix for broken cmac crypto support Sebastian Gottschall
2019-06-06 10:14 ` [PATCH v3 1/2] mt76: mt7615: enable support for mesh Sebastian Gottschall
2019-06-06 15:18   ` Ryder Lee

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