[dpdk-dev] [PATCH] net/i40e: revert VLAN filtering fix

[Jingjing Wu]

This reverts commit 4761f57d58c6f52543738dbe299f846d62d75895.
Introducing VLAN table by adding VLAN adminq command will cause NIC's
throughput drop obviously. It's a hardware issue.
With this revert, VLAN filtering can only work when promiscuous mode
is disabled.

Reverts: 4761f57d58c6 ("net/i40e: fix VLAN filtering in promiscuous mode")

Reported-by: Jeffrey Shaw <jeffrey.b.shaw at intel.com>
Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 23 ++++-------------------
 1 file changed, 4 insertions(+), 19 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index daac236..3f9f05e 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -2718,16 +2718,12 @@ i40e_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 {
        struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
        struct i40e_vsi *vsi = pf->main_vsi;
-       struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);

        if (mask & ETH_VLAN_FILTER_MASK) {
-               if (dev->data->dev_conf.rxmode.hw_vlan_filter) {
-                       i40e_aq_set_vsi_vlan_promisc(hw, vsi->seid, false, 
NULL);
+               if (dev->data->dev_conf.rxmode.hw_vlan_filter)
                        i40e_vsi_config_vlan_filter(vsi, TRUE);
-               } else {
-                       i40e_aq_set_vsi_vlan_promisc(hw, vsi->seid, true, NULL);
+               else
                        i40e_vsi_config_vlan_filter(vsi, FALSE);
-               }
        }

        if (mask & ETH_VLAN_STRIP_MASK) {
@@ -5777,28 +5773,17 @@ i40e_set_vlan_filter(struct i40e_vsi *vsi,
                         uint16_t vlan_id, bool on)
 {
        uint32_t vid_idx, vid_bit;
-       struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
-       struct i40e_aqc_add_remove_vlan_element_data vlan_data = {0};
-       int ret;

        if (vlan_id > ETH_VLAN_ID_MAX)
                return;

        vid_idx = I40E_VFTA_IDX(vlan_id);
        vid_bit = I40E_VFTA_BIT(vlan_id);
-       vlan_data.vlan_tag = rte_cpu_to_le_16(vlan_id);

-       if (on) {
-               ret = i40e_aq_add_vlan(hw, vsi->seid, &vlan_data, 1, NULL);
-               if (ret != I40E_SUCCESS)
-                       PMD_DRV_LOG(ERR, "Failed to add vlan filter");
+       if (on)
                vsi->vfta[vid_idx] |= vid_bit;
-       } else {
-               ret = i40e_aq_remove_vlan(hw, vsi->seid, &vlan_data, 1, NULL);
-               if (ret != I40E_SUCCESS)
-                       PMD_DRV_LOG(ERR, "Failed to remove vlan filter");
+       else
                vsi->vfta[vid_idx] &= ~vid_bit;
-       }
 }

 /**
-- 
2.4.0