lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Thu, 30 Nov 2023 20:31:34 +0100
From: Ivan Vecera <>
Cc: Jesse Brandeburg <>,
	Tony Nguyen <>,
	"David S. Miller" <>,
	Eric Dumazet <>,
	Jakub Kicinski <>,
	Paolo Abeni <>,
	Aleksandr Loktionov <>,
	Arkadiusz Kubalewski <>, (moderated list:INTEL ETHERNET DRIVERS), (open list)
Subject: [PATCH iwl-net] i40e: Fix wrong mask used during DCB config

Mask used for clearing PRTDCB_RETSTCC register in function
i40e_dcb_hw_rx_ets_bw_config() is incorrect as there is used
define I40E_PRTDCB_RETSTCC_ETSTC_SHIFT instead of define

The PRTDCB_RETSTCC register is used to configure whether ETS
or strict priority is used as TSA in Rx for particular TC.

In practice it means that once the register is set to use ETS
as TSA then it is not possible to switch back to strict priority
without CoreR reset.

Fix the value in the clearing mask.

Fixes: 90bc8e003be2 ("i40e: Add hardware configuration for software based DCB")
Signed-off-by: Ivan Vecera <>
 drivers/net/ethernet/intel/i40e/i40e_dcb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.c b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
index 68602fc375f6..073ffbfcbe8d 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_dcb.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
@@ -1576,7 +1576,7 @@ void i40e_dcb_hw_rx_ets_bw_config(struct i40e_hw *hw, u8 *bw_share,
 		reg = rd32(hw, I40E_PRTDCB_RETSTCC(i));
 		reg |= ((u32)bw_share[i] << I40E_PRTDCB_RETSTCC_BWSHARE_SHIFT) &
 		reg |= ((u32)mode[i] << I40E_PRTDCB_RETSTCC_UPINTC_MODE_SHIFT) &

Powered by blists - more mailing lists