+static void
+ixgbe_add_tx_flow_control_drop_filter(struct rte_eth_dev *eth_dev)
+{
+ struct ixgbe_hw *hw =
+ IXGBE_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+ struct ixgbe_filter_info *filter_info =
+ IXGBE_DEV_PRIVATE_TO_FILTER_INFO(eth_dev->data->dev_private);
+ uint16_t vf_num;
+ int i;
+ struct ixgbe_ethertype_filter ethertype_filter;
+
+ if (!hw->mac.ops.set_ethertype_anti_spoofing) {
+ RTE_LOG(INFO, PMD, "ether type anti-spoofing is not"
+ " supported.\n");
+ return;
+ }
+
+ i = ixgbe_ethertype_filter_lookup(filter_info,
+ IXGBE_ETHERTYPE_FLOW_CTRL);
+ if (i >= 0) {
+ RTE_LOG(ERR, PMD, "A ether type filter"
+ " entity for flow control already exists!\n");
+ return;
+ }
+
+ ethertype_filter.ethertype = IXGBE_ETHERTYPE_FLOW_CTRL;
+ ethertype_filter.etqf = IXGBE_ETQF_FILTER_EN |
+ IXGBE_ETQF_TX_ANTISPOOF |
+ IXGBE_ETHERTYPE_FLOW_CTRL;
+ ethertype_filter.etqs = 0;
+ ethertype_filter.conf = TRUE;
+ i = ixgbe_ethertype_filter_insert(filter_info,
+ ðertype_filter);
+ if (i < 0) {
+ RTE_LOG(ERR, PMD, "Cannot find an unused ether type filter"
+ " entity for flow control.\n");
+ return;
+ }
+
+ IXGBE_WRITE_REG(hw, IXGBE_ETQF(i),
+ (IXGBE_ETQF_FILTER_EN |
+ IXGBE_ETQF_TX_ANTISPOOF |
+ IXGBE_ETHERTYPE_FLOW_CTRL));
+
+ vf_num = dev_num_vf(eth_dev);
+ for (i = 0; i < vf_num; i++)
+ hw->mac.ops.set_ethertype_anti_spoofing(hw, true, i);
+}
+