From: "Palczewski, Mateusz" <mateusz.palczewski@intel.com>
To: intel-wired-lan@lists.osuosl.org
Cc: Przemyslaw Patynowski <przemyslawx.patynowski@intel.com>
Subject: [Intel-wired-lan] [PATCH net v1] ice: Fix max VLANs available for VF
Date: Mon, 27 Jun 2022 16:02:04 +0200 [thread overview]
Message-ID: <20220627140204.494655-1-mateusz.palczewski@intel.com> (raw)
Legacy VLAN implementation allows for untrusted VF to have 8 VLAN
filters, not counting VLAN 0 filters. Current VLAN_V2 implementation
lowers available filters for VF, by counting in VLAN 0 filter for both
TPIDs.
Fix this by counting only non zero VLAN filters.
Without this patch, untrusted VF would not be able to access 8 VLAN
filters.
Fixes: bf93bf791cec ("ice: introduce ice_virtchnl.c and ice_virtchnl.h")
Signed-off-by: Przemyslaw Patynowski <przemyslawx.patynowski@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
---
drivers/net/ethernet/intel/ice/ice_virtchnl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index 4547bc1f7cee..24188ec594d5 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -2948,7 +2948,8 @@ ice_vc_validate_add_vlan_filter_list(struct ice_vsi *vsi,
struct virtchnl_vlan_filtering_caps *vfc,
struct virtchnl_vlan_filter_list_v2 *vfl)
{
- u16 num_requested_filters = vsi->num_vlan + vfl->num_elements;
+ u16 num_requested_filters = ice_vsi_num_non_zero_vlans(vsi) +
+ vfl->num_elements;
if (num_requested_filters > vfc->max_filters)
return false;
--
2.27.0
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