From 930e0eaddf810cfa90e114a0df02f48539e1346f Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 17 Oct 2020 17:15:25 +0200
Subject: [PATCH] mt76: fix tkip configuration for mt7615/7663 devices
Git-commit: 930e0eaddf810cfa90e114a0df02f48539e1346f
Patch-mainline: v5.11-rc1
References: git-fixes
Fix Tx-Rx MIC overwrite during TKIP hw key configuration
Fixes: 01cfc1b45421 ("mt76: mt7615: add BIP_CMAC_128 cipher support")
Tested-by: YN Chen <yn.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index abb86a13f241..09da41cbdc6d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -1046,15 +1046,17 @@ int mt7615_mac_wtbl_update_key(struct mt7615_dev *dev,
if (cmd == SET_KEY) {
if (cipher == MT_CIPHER_TKIP) {
/* Rx/Tx MIC keys are swapped */
+ memcpy(data, key, 16);
memcpy(data + 16, key + 24, 8);
memcpy(data + 24, key + 16, 8);
+ } else {
+ if (cipher != MT_CIPHER_BIP_CMAC_128 && wcid->cipher)
+ memmove(data + 16, data, 16);
+ if (cipher != MT_CIPHER_BIP_CMAC_128 || !wcid->cipher)
+ memcpy(data, key, keylen);
+ else if (cipher == MT_CIPHER_BIP_CMAC_128)
+ memcpy(data + 16, key, 16);
}
- if (cipher != MT_CIPHER_BIP_CMAC_128 && wcid->cipher)
- memmove(data + 16, data, 16);
- if (cipher != MT_CIPHER_BIP_CMAC_128 || !wcid->cipher)
- memcpy(data, key, keylen);
- else if (cipher == MT_CIPHER_BIP_CMAC_128)
- memcpy(data + 16, key, 16);
} else {
if (wcid->cipher & ~BIT(cipher)) {
if (cipher != MT_CIPHER_BIP_CMAC_128)
--
2.26.2