From: Kalle Valo Date: Tue, 12 Nov 2024 14:24:19 +0000 (+0200) Subject: Revert "wifi: iwlegacy: do not skip frames with bad FCS" X-Git-Tag: v6.13-rc1~135^2~57^2 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=11597043d74809daf5d14256b96d6781749b3f82;p=linux-block.git Revert "wifi: iwlegacy: do not skip frames with bad FCS" 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 Closes: https://lore.kernel.org/r/60f752e8-787e-44a8-92ae-48bdfc9b43e7@app.fastmail.com/ Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20241112142419.1023743-1-kvalo@kernel.org --- diff --git a/drivers/net/wireless/intel/iwlegacy/3945.c b/drivers/net/wireless/intel/iwlegacy/3945.c index 14d2331ee6cb..b0656b143f77 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 fcccde7bb659..05c4af41bdb9 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 */