netdev - [PATCH net-next 11/13] ice: don't enable PTP related capabilities on non-owner PFs

lists.openwall.net		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-prev] [thread-next>] [day] [month] [year] [list]

Date: Mon, 11 Sep 2023 11:03:12 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Jacob Keller <jacob.e.keller@...el.com>,
	anthony.l.nguyen@...el.com,
	richardcochran@...il.com,
	Sunitha Mekala <sunithax.d.mekala@...el.com>
Subject: [PATCH net-next 11/13] ice: don't enable PTP related capabilities on non-owner PFs

From: Jacob Keller <jacob.e.keller@...el.com>

The ice driver currently sets feature flags for certain PTP related
capabilities based on whether the device has support for the feature. Avoid
enabling these capabilities except on the ports which own the timer. This
ensures that the driver never attempts to access the features except on the
ports designated as controlling the main timer functionality.

Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 5dfcb824f817..f29ff54383b5 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -3986,6 +3986,9 @@ void ice_init_feature_support(struct ice_pf *pf)
 	case ICE_DEV_ID_E810C_QSFP:
 	case ICE_DEV_ID_E810C_SFP:
 		ice_set_feature_support(pf, ICE_F_DSCP);
+		/* If we don't own the timer - don't enable other caps */
+		if (!ice_pf_src_tmr_owned(pf))
+			break;
 		if (ice_is_e810t(&pf->hw)) {
 			ice_set_feature_support(pf, ICE_F_SMA_CTRL);
 			if (ice_gnss_is_gps_present(&pf->hw))
-- 
2.38.1