+/* Destroy a flow rule on igb. */
+static int
+igb_flow_destroy(struct rte_eth_dev *dev,
+ struct rte_flow *flow,
+ struct rte_flow_error *error)
+{
+ int ret;
+ struct rte_flow *pmd_flow = flow;
+ enum rte_filter_type filter_type = pmd_flow->filter_type;
+ struct igb_ntuple_filter_ele *ntuple_filter_ptr;
+ struct igb_ethertype_filter_ele *ethertype_filter_ptr;
+ struct igb_eth_syn_filter_ele *syn_filter_ptr;
+ struct igb_flex_filter_ele *flex_filter_ptr;
+ struct igb_flow_mem *igb_flow_mem_ptr;
+
+ switch (filter_type) {
+ case RTE_ETH_FILTER_NTUPLE:
+ ntuple_filter_ptr = (struct igb_ntuple_filter_ele *)
+ pmd_flow->rule;
+ ret = igb_add_del_ntuple_filter(dev,
+ &ntuple_filter_ptr->filter_info, FALSE);
+ if (!ret) {
+ TAILQ_REMOVE(&igb_filter_ntuple_list,
+ ntuple_filter_ptr, entries);
+ rte_free(ntuple_filter_ptr);
+ }
+ break;
+ case RTE_ETH_FILTER_ETHERTYPE:
+ ethertype_filter_ptr = (struct igb_ethertype_filter_ele *)
+ pmd_flow->rule;
+ ret = igb_add_del_ethertype_filter(dev,
+ ðertype_filter_ptr->filter_info, FALSE);
+ if (!ret) {
+ TAILQ_REMOVE(&igb_filter_ethertype_list,
+ ethertype_filter_ptr, entries);
+ rte_free(ethertype_filter_ptr);
+ }
+ break;
+ case RTE_ETH_FILTER_SYN:
+ syn_filter_ptr = (struct igb_eth_syn_filter_ele *)
+ pmd_flow->rule;
+ ret = eth_igb_syn_filter_set(dev,
+ &syn_filter_ptr->filter_info, FALSE);
+ if (!ret) {
+ TAILQ_REMOVE(&igb_filter_syn_list,
+ syn_filter_ptr, entries);
+ rte_free(syn_filter_ptr);
+ }
+ break;
+ case RTE_ETH_FILTER_FLEXIBLE:
+ flex_filter_ptr = (struct igb_flex_filter_ele *)
+ pmd_flow->rule;
+ ret = eth_igb_add_del_flex_filter(dev,
+ &flex_filter_ptr->filter_info, FALSE);
+ if (!ret) {
+ TAILQ_REMOVE(&igb_filter_flex_list,
+ flex_filter_ptr, entries);
+ rte_free(flex_filter_ptr);
+ }
+ break;
+ default:
+ PMD_DRV_LOG(WARNING, "Filter type (%d) not supported",
+ filter_type);
+ ret = -EINVAL;
+ break;
+ }
+
+ if (ret) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "Failed to destroy flow");
+ return ret;
+ }
+
+ TAILQ_FOREACH(igb_flow_mem_ptr, &igb_flow_list, entries) {
+ if (igb_flow_mem_ptr->flow == pmd_flow) {
+ TAILQ_REMOVE(&igb_flow_list,
+ igb_flow_mem_ptr, entries);
+ rte_free(igb_flow_mem_ptr);
+ }
+ }
+ rte_free(flow);
+
+ return ret;
+}
+
+/* remove all the n-tuple filters */
+static void
+igb_clear_all_ntuple_filter(struct rte_eth_dev *dev)
+{
+ struct e1000_filter_info *filter_info =
+ E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+ struct e1000_5tuple_filter *p_5tuple;
+ struct e1000_2tuple_filter *p_2tuple;
+
+ while ((p_5tuple = TAILQ_FIRST(&filter_info->fivetuple_list)))
+ igb_delete_5tuple_filter_82576(dev, p_5tuple);
+
+ while ((p_2tuple = TAILQ_FIRST(&filter_info->twotuple_list)))
+ igb_delete_2tuple_filter(dev, p_2tuple);
+}
+
+/* remove all the ether type filters */
+static void
+igb_clear_all_ethertype_filter(struct rte_eth_dev *dev)
+{
+ struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ struct e1000_filter_info *filter_info =
+ E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+ int i;
+
+ for (i = 0; i < E1000_MAX_ETQF_FILTERS; i++) {
+ if (filter_info->ethertype_mask & (1 << i)) {
+ (void)igb_ethertype_filter_remove(filter_info,
+ (uint8_t)i);
+ E1000_WRITE_REG(hw, E1000_ETQF(i), 0);
+ E1000_WRITE_FLUSH(hw);
+ }
+ }
+}
+
+/* remove the SYN filter */
+static void
+igb_clear_syn_filter(struct rte_eth_dev *dev)
+{
+ struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ struct e1000_filter_info *filter_info =
+ E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+
+ if (filter_info->syn_info & E1000_SYN_FILTER_ENABLE) {
+ filter_info->syn_info = 0;
+ E1000_WRITE_REG(hw, E1000_SYNQF(0), 0);
+ E1000_WRITE_FLUSH(hw);
+ }
+}
+
+/* remove all the flex filters */
+static void
+igb_clear_all_flex_filter(struct rte_eth_dev *dev)
+{
+ struct e1000_filter_info *filter_info =
+ E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+ struct e1000_flex_filter *flex_filter;
+
+ while ((flex_filter = TAILQ_FIRST(&filter_info->flex_list)))
+ igb_remove_flex_filter(dev, flex_filter);
+}
+
+void
+igb_filterlist_flush(struct rte_eth_dev *dev)
+{
+ struct igb_ntuple_filter_ele *ntuple_filter_ptr;
+ struct igb_ethertype_filter_ele *ethertype_filter_ptr;
+ struct igb_eth_syn_filter_ele *syn_filter_ptr;
+ struct igb_flex_filter_ele *flex_filter_ptr;
+ struct igb_flow_mem *igb_flow_mem_ptr;
+ enum rte_filter_type filter_type;
+ struct rte_flow *pmd_flow;
+
+ TAILQ_FOREACH(igb_flow_mem_ptr, &igb_flow_list, entries) {
+ if (igb_flow_mem_ptr->dev == dev) {
+ pmd_flow = igb_flow_mem_ptr->flow;
+ filter_type = pmd_flow->filter_type;
+
+ switch (filter_type) {
+ case RTE_ETH_FILTER_NTUPLE:
+ ntuple_filter_ptr =
+ (struct igb_ntuple_filter_ele *)
+ pmd_flow->rule;
+ TAILQ_REMOVE(&igb_filter_ntuple_list,
+ ntuple_filter_ptr, entries);
+ rte_free(ntuple_filter_ptr);
+ break;
+ case RTE_ETH_FILTER_ETHERTYPE:
+ ethertype_filter_ptr =
+ (struct igb_ethertype_filter_ele *)
+ pmd_flow->rule;
+ TAILQ_REMOVE(&igb_filter_ethertype_list,
+ ethertype_filter_ptr, entries);
+ rte_free(ethertype_filter_ptr);
+ break;
+ case RTE_ETH_FILTER_SYN:
+ syn_filter_ptr =
+ (struct igb_eth_syn_filter_ele *)
+ pmd_flow->rule;
+ TAILQ_REMOVE(&igb_filter_syn_list,
+ syn_filter_ptr, entries);
+ rte_free(syn_filter_ptr);
+ break;
+ case RTE_ETH_FILTER_FLEXIBLE:
+ flex_filter_ptr =
+ (struct igb_flex_filter_ele *)
+ pmd_flow->rule;
+ TAILQ_REMOVE(&igb_filter_flex_list,
+ flex_filter_ptr, entries);
+ rte_free(flex_filter_ptr);
+ break;
+ default:
+ PMD_DRV_LOG(WARNING, "Filter type"
+ "(%d) not supported", filter_type);
+ break;
+ }
+ TAILQ_REMOVE(&igb_flow_list,
+ igb_flow_mem_ptr,
+ entries);
+ rte_free(igb_flow_mem_ptr->flow);
+ rte_free(igb_flow_mem_ptr);
+ }
+ }
+}
+
+/* Destroy all flow rules associated with a port on igb. */
+static int
+igb_flow_flush(struct rte_eth_dev *dev,
+ __rte_unused struct rte_flow_error *error)
+{
+ igb_clear_all_ntuple_filter(dev);
+ igb_clear_all_ethertype_filter(dev);
+ igb_clear_syn_filter(dev);
+ igb_clear_all_flex_filter(dev);
+ igb_filterlist_flush(dev);
+
+ return 0;
+}
+