diff options
| author | Devin Wittmayer <lucid_duck@justthetip.ca> | 2026-06-12 17:25:44 -0700 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2026-07-31 12:25:37 +0000 |
| commit | ddae0bcb01e71c1184bb3f526f9622e31dc38f3b (patch) | |
| tree | 0cc5e3443b06ce9e0e1c9e4d1a05e826b47b43e2 | |
| parent | 81497634d9f872fd3e8b03aada55574afff6f174 (diff) | |
wifi: mt76: mt76x02: report rx FCS errors to mac80211
When the fcsfail filter is enabled the hardware passes frames with a bad
FCS up to the driver, but mt76x02_mac_process_rx() never checks
MT_RXINFO_CRCERR and hands them to mac80211 without
RX_FLAG_FAILED_FCS_CRC. In monitor mode the radiotap flags byte then
never gets IEEE80211_RADIOTAP_F_BADFCS set and corrupted frames cannot be
told apart from clean ones.
Set RX_FLAG_FAILED_FCS_CRC from the descriptor CRC error bit, matching
mt7603, mt7615, mt7915, mt7921, mt7925 and mt7996.
Reported-by: 0072a70 <90307219+0072a70@users.noreply.github.com>
Closes: https://github.com/morrownr/mt76/issues/38
Tested-by: 0072a70 <90307219+0072a70@users.noreply.github.com>
Signed-off-by: Devin Wittmayer <lucid_duck@justthetip.ca>
Link: https://patch.msgid.link/20260613002544.27750-3-lucid_duck@justthetip.ca
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x02_mac.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c index aa525adb6743..21f8b1e64101 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c @@ -792,6 +792,9 @@ int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb, if (rxinfo & MT_RXINFO_L2PAD) pad_len += 2; + if (rxinfo & MT_RXINFO_CRCERR) + status->flag |= RX_FLAG_FAILED_FCS_CRC; + if (rxinfo & MT_RXINFO_DECRYPT) { status->flag |= RX_FLAG_DECRYPTED; status->flag |= RX_FLAG_MMIC_STRIPPED; |