From 65277100caa2f2c62b6f3c4648b90d6f0435f3bc Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 15 Oct 2020 13:16:16 +0200 Subject: rsi: Fix TX EAPOL packet handling against iwlwifi AP 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 Cc: Angus Ainslie Cc: David S. Miller Cc: Jakub Kicinski Cc: Kalle Valo Cc: Lee Jones Cc: Martin Kepplinger Cc: Sebastian Krzyszkowiak Cc: Siva Rebbagondla Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20201015111616.429220-1-marex@denx.de --- drivers/net/wireless/rsi/rsi_91x_hal.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/rsi') diff --git a/drivers/net/wireless/rsi/rsi_91x_hal.c b/drivers/net/wireless/rsi/rsi_91x_hal.c index 3f7e3cfb6f00..ce9892152f4d 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; -- cgit v1.2.3