openwrt/package/kernel/mac80211/patches/ath/544-ath9k-ar933x-usb-hang-workaround.patch
Hauke Mehrtens 65835e0d5f mac80211: Update to backports-5.10.68
Refresh all patches.
The removed patches were integrated upstream.

This contains fixes for CVE-2020-3702

1. These patches (ath, ath9k, mac80211)  were included in kernel
versions since 4.14.245 and 4.19.205. They fix security vulnerability
CVE-2020-3702 [1] similar to KrØØk, which was found by ESET [2].

Thank you Josef Schlehofer for reporting this problem.

[1] https://nvd.nist.gov/vuln/detail/CVE-2020-3702
[2] https://www.welivesecurity.com/2020/08/06/beyond-kr00k-even-more-wifi-chips-vulnerable-eavesdropping/

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-09-22 22:36:15 +02:00

80 lines
2.0 KiB
Diff

--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -248,6 +248,19 @@ void ath9k_hw_get_channel_centers(struct
centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
}
+static inline void ath9k_hw_disable_pll_lock_detect(struct ath_hw *ah)
+{
+ /* On AR9330 and AR9340 devices, some PHY registers must be
+ * tuned to gain better stability/performance. These registers
+ * might be changed while doing wlan reset so the registers must
+ * be reprogrammed after each reset.
+ */
+ REG_CLR_BIT(ah, AR_PHY_USB_CTRL1, BIT(20));
+ REG_RMW(ah, AR_PHY_USB_CTRL2,
+ (1 << 21) | (0xf << 22),
+ (1 << 21) | (0x3 << 22));
+}
+
/******************/
/* Chip Revisions */
/******************/
@@ -1455,6 +1468,9 @@ static bool ath9k_hw_set_reset(struct at
udelay(50);
}
+ if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
+ ath9k_hw_disable_pll_lock_detect(ah);
+
return true;
}
@@ -1554,6 +1570,9 @@ static bool ath9k_hw_chip_reset(struct a
ar9003_hw_internal_regulator_apply(ah);
ath9k_hw_init_pll(ah, chan);
+ if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
+ ath9k_hw_disable_pll_lock_detect(ah);
+
return true;
}
@@ -1860,8 +1879,14 @@ static int ath9k_hw_do_fastcc(struct ath
if (AR_SREV_9271(ah))
ar9002_hw_load_ani_reg(ah, chan);
+ if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
+ ath9k_hw_disable_pll_lock_detect(ah);
+
return 0;
fail:
+ if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
+ ath9k_hw_disable_pll_lock_detect(ah);
+
return -EINVAL;
}
@@ -2115,6 +2140,9 @@ int ath9k_hw_reset(struct ath_hw *ah, st
ath9k_hw_set_radar_params(ah);
}
+ if (AR_SREV_9330(ah) || AR_SREV_9340(ah))
+ ath9k_hw_disable_pll_lock_detect(ah);
+
return 0;
}
EXPORT_SYMBOL(ath9k_hw_reset);
--- a/drivers/net/wireless/ath/ath9k/phy.h
+++ b/drivers/net/wireless/ath/ath9k/phy.h
@@ -48,6 +48,9 @@
#define AR_PHY_PLL_CONTROL 0x16180
#define AR_PHY_PLL_MODE 0x16184
+#define AR_PHY_USB_CTRL1 0x16c84
+#define AR_PHY_USB_CTRL2 0x16c88
+
enum ath9k_ant_div_comb_lna_conf {
ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2,
ATH_ANT_DIV_COMB_LNA2,