This is a note to let you know that I've just added the patch titled
rsi: Fix TX EAPOL packet handling against iwlwifi AP
to the 5.4-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:
rsi-fix-tx-eapol-packet-handling-against-iwlwifi-ap.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bdfeb5896ac539ddeb186784bc366367307bebe9
Author: Marek Vasut <marex@xxxxxxx>
Date: Thu Oct 15 13:16:16 2020 +0200
rsi: Fix TX EAPOL packet handling against iwlwifi AP
[ Upstream commit 65277100caa2f2c62b6f3c4648b90d6f0435f3bc ]
In case RSI9116 SDIO WiFi operates in STA mode against Intel 9260 in AP mode,
the association fails. The former is using wpa_supplicant during association,
the later is set up using hostapd:
iwl$ cat hostapd.conf
interface=wlp1s0
ssid=test
country_code=DE
hw_mode=g
channel=1
wpa=2
wpa_passphrase=test
wpa_key_mgmt=WPA-PSK
iwl$ hostapd -d hostapd.conf
rsi$ wpa_supplicant -i wlan0 -c <(wpa_passphrase test test)
The problem is that the TX EAPOL data descriptor RSI_DESC_REQUIRE_CFM_TO_HOST
flag and extended descriptor EAPOL4_CONFIRM frame type are not set in case the
AP is iwlwifi, because in that case the TX EAPOL packet is 2 bytes shorter.
The downstream vendor driver has this change in place already [1], however
there is no explanation for it, neither is there any commit history from which
such explanation could be obtained.
[1] https://github.com/SiliconLabs/RS911X-nLink-OSD/blob/master/rsi/rsi_91x_hal.c#L238
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Angus Ainslie <angus@xxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Martin Kepplinger <martink@xxxxxxxxx>
Cc: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@xxxxxxx>
Cc: Siva Rebbagondla <siva8118@xxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201015111616.429220-1-marex@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/rsi/rsi_91x_hal.c b/drivers/net/wireless/rsi/rsi_91x_hal.c
index 6f8d5f9a9f7e..a07304405b2c 100644
--- a/drivers/net/wireless/rsi/rsi_91x_hal.c
+++ b/drivers/net/wireless/rsi/rsi_91x_hal.c
@@ -248,7 +248,8 @@ int rsi_prepare_data_desc(struct rsi_common *common, struct sk_buff *skb)
rsi_set_len_qno(&data_desc->len_qno,
(skb->len - FRAME_DESC_SZ),
RSI_WIFI_MGMT_Q);
- if ((skb->len - header_size) == EAPOL4_PACKET_LEN) {
+ if (((skb->len - header_size) == EAPOL4_PACKET_LEN) ||
+ ((skb->len - header_size) == EAPOL4_PACKET_LEN - 2)) {
data_desc->misc_flags |=
RSI_DESC_REQUIRE_CFM_TO_HOST;
xtend_desc->confirm_frame_type = EAPOL4_CONFIRM;
