From: Xing Song xing.song@mediatek.com
[ Upstream commit dd28dea52ad9376d2b243a8981726646e1f60b1a ]
MAC80211 doesn't care any decryption error in 802.3 path, so received frame will be dropped if HW tell us that the cipher configuration is not matched as well as the header has been translated to 802.3. This case only appears when IEEE80211_FCTL_PROTECTED is 0 and cipher suit is not none in the corresponding HW entry.
The received frame is only reported to monitor interface if HW decryption block tell us there is ICV error or CCMP/BIP/WPI MIC error. Note in this case the reported frame is decrypted 802.11 frame and the payload may be malformed due to mismatched key.
Signed-off-by: Xing Song xing.song@mediatek.com Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/mediatek/mt76/mt7603/mac.c | 4 ++++ drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 9 ++++++++- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 9 ++++++++- drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 9 ++++++++- 4 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c index fe03e31989bb1..a9ac61b9f854a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c @@ -525,6 +525,10 @@ mt7603_mac_fill_rx(struct mt7603_dev *dev, struct sk_buff *skb) if (rxd2 & MT_RXD2_NORMAL_TKIP_MIC_ERR) status->flag |= RX_FLAG_MMIC_ERROR;
+ /* ICV error or CCMP/BIP/WPI MIC error */ + if (rxd2 & MT_RXD2_NORMAL_ICV_ERR) + status->flag |= RX_FLAG_ONLY_MONITOR; + if (FIELD_GET(MT_RXD2_NORMAL_SEC_MODE, rxd2) != 0 && !(rxd2 & (MT_RXD2_NORMAL_CLM | MT_RXD2_NORMAL_CM))) { status->flag |= RX_FLAG_DECRYPTED; diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index 423f69015e3ec..c79abce543f3b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -286,9 +286,16 @@ static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb) if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) return -EINVAL;
+ hdr_trans = rxd1 & MT_RXD1_NORMAL_HDR_TRANS; + if (hdr_trans && (rxd2 & MT_RXD2_NORMAL_CM)) + return -EINVAL; + + /* ICV error or CCMP/BIP/WPI MIC error */ + if (rxd2 & MT_RXD2_NORMAL_ICV_ERR) + status->flag |= RX_FLAG_ONLY_MONITOR; + unicast = (rxd1 & MT_RXD1_NORMAL_ADDR_TYPE) == MT_RXD1_NORMAL_U2M; idx = FIELD_GET(MT_RXD2_NORMAL_WLAN_IDX, rxd2); - hdr_trans = rxd1 & MT_RXD1_NORMAL_HDR_TRANS; status->wcid = mt7615_rx_get_wcid(dev, idx, unicast);
if (status->wcid) { diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index 809dc18e5083c..38d66411444a1 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -426,9 +426,16 @@ mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb) if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) return -EINVAL;
+ hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; + if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM)) + return -EINVAL; + + /* ICV error or CCMP/BIP/WPI MIC error */ + if (rxd1 & MT_RXD1_NORMAL_ICV_ERR) + status->flag |= RX_FLAG_ONLY_MONITOR; + unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M; idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1); - hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; status->wcid = mt7915_rx_get_wcid(dev, idx, unicast);
if (status->wcid) { diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c index db3302b1576a0..27550385c35f9 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c @@ -428,10 +428,17 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb) if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) return -EINVAL;
+ hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; + if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM)) + return -EINVAL; + + /* ICV error or CCMP/BIP/WPI MIC error */ + if (rxd1 & MT_RXD1_NORMAL_ICV_ERR) + status->flag |= RX_FLAG_ONLY_MONITOR; + chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3); unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M; idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1); - hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; status->wcid = mt7921_rx_get_wcid(dev, idx, unicast);
if (status->wcid) {