This is a note to let you know that I've just added the patch titled
Revert "wifi: iwlegacy: do not skip frames with bad FCS"
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-wifi-iwlegacy-do-not-skip-frames-with-bad-fcs.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0f2e2a43b2b049169df22ea9c963911a2106e850
Author: Kalle Valo <kvalo@xxxxxxxxxx>
Date: Tue Nov 12 16:24:19 2024 +0200
Revert "wifi: iwlegacy: do not skip frames with bad FCS"
[ Upstream commit 11597043d74809daf5d14256b96d6781749b3f82 ]
This reverts commit 02b682d54598f61cbb7dbb14d98ec1801112b878.
Alf reports that this commit causes the connection to eventually die on
iwl4965. The reason is that rx_status.flag is zeroed after
RX_FLAG_FAILED_FCS_CRC is set and mac80211 doesn't know the received frame is
corrupted.
Fixes: 02b682d54598 ("wifi: iwlegacy: do not skip frames with bad FCS")
Reported-by: Alf Marius <post@xxxxxxxxxxxxx>
Closes: https://lore.kernel.org/r/60f752e8-787e-44a8-92ae-48bdfc9b43e7@xxxxxxxxxxxxxxxx/
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://patch.msgid.link/20241112142419.1023743-1-kvalo@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/intel/iwlegacy/3945.c b/drivers/net/wireless/intel/iwlegacy/3945.c
index 1fab7849f56d1..a773939b8c2aa 100644
--- a/drivers/net/wireless/intel/iwlegacy/3945.c
+++ b/drivers/net/wireless/intel/iwlegacy/3945.c
@@ -566,7 +566,7 @@ il3945_hdl_rx(struct il_priv *il, struct il_rx_buf *rxb)
if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) ||
!(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
D_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
- rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
+ return;
}
/* Convert 3945's rssi indicator to dBm */
diff --git a/drivers/net/wireless/intel/iwlegacy/4965-mac.c b/drivers/net/wireless/intel/iwlegacy/4965-mac.c
index 1600c344edbb2..11c15e0bc779a 100644
--- a/drivers/net/wireless/intel/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/intel/iwlegacy/4965-mac.c
@@ -664,7 +664,7 @@ il4965_hdl_rx(struct il_priv *il, struct il_rx_buf *rxb)
if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) ||
!(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
D_RX("Bad CRC or FIFO: 0x%08X.\n", le32_to_cpu(rx_pkt_status));
- rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
+ return;
}
/* This will be used in several places later */
