ice: Fix double VLAN error when entering promisc mode

commit ffa9ed86522f1c08d4face4e0a4ebf366037bf19 upstream.

Avoid enabling or disabling VLAN 0 when trying to set promiscuous
VLAN mode if double VLAN mode is enabled. This fix is needed
because the driver tries to add the VLAN 0 filter twice (once for
inner and once for outer) when double VLAN mode is enabled. The
filter program is rejected by the firmware when double VLAN is
enabled, because the promiscuous filter only needs to be set once.

This issue was missed in the initial implementation of double VLAN
mode.

Fixes: 5eda8afd6bcc ("ice: Add support for PF/VF promiscuous mode")
Signed-off-by: Grzegorz Siwik <grzegorz.siwik@intel.com>
Link: https://lore.kernel.org/all/CAK8fFZ7m-KR57M_rYX6xZN39K89O=LGooYkKsu6HKt0Bs+x6xQ@mail.gmail.com/
Tested-by: Jaroslav Pulchart <jaroslav.pulchart@gooddata.com>
Tested-by: Igor Raits <igor@gooddata.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 9b2872e8915183a8fe2c76299aee5cf1025bcd08..48ea04108de09024bb1f391afc09e58cd084667e 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -4414,6 +4414,13 @@ ice_set_vlan_vsi_promisc(struct ice_hw *hw, u16 vsi_handle, u8 promisc_mask,
                goto free_fltr_list;
 
        list_for_each_entry(list_itr, &vsi_list_head, list_entry) {
+               /* Avoid enabling or disabling VLAN zero twice when in double
+                * VLAN mode
+                */
+               if (ice_is_dvm_ena(hw) &&
+                   list_itr->fltr_info.l_data.vlan.tpid == 0)
+                       continue;
+
                vlan_id = list_itr->fltr_info.l_data.vlan.vlan_id;
                if (rm_vlan_promisc)
                        status = ice_clear_vsi_promisc(hw, vsi_handle,