netdev - [net-next 08/15] ice: Don't allow VLAN stripping change when pvid set

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Date:   Thu, 28 May 2020 00:25:31 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Brett Creeley <brett.creeley@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 08/15] ice: Don't allow VLAN stripping change when pvid set

From: Brett Creeley <brett.creeley@...el.com>

Currently, if the PVID is set in the VLAN handling section of the VSI
context the driver still allows VLAN stripping to be enabled/disabled.
VLAN stripping should only be modifiable when the PVID is not set. Fix
this by preventing VLAN stripping modification when PVID is set.

Signed-off-by: Brett Creeley <brett.creeley@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index f81bd4c30bbc..89962c14e31f 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -1812,6 +1812,12 @@ int ice_vsi_manage_vlan_stripping(struct ice_vsi *vsi, bool ena)
 	enum ice_status status;
 	int ret = 0;
 
+	/* do not allow modifying VLAN stripping when a port VLAN is configured
+	 * on this VSI
+	 */
+	if (vsi->info.pvid)
+		return 0;
+
 	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
 	if (!ctxt)
 		return -ENOMEM;
-- 
2.26.2