net/ixgbe: flush all the filters

Add support for flush all the filters in SW.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>
Acked-by: Wei Dai <wei.dai@intel.com>

drivers/net/ixgbe/Makefile

@@ -109,6 +109,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD) += ixgbe_rxtx.c
 SRCS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD) += ixgbe_ethdev.c
 SRCS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD) += ixgbe_fdir.c
 SRCS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD) += ixgbe_pf.c
+SRCS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD) += ixgbe_flow.c
 ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
 SRCS-$(CONFIG_RTE_IXGBE_INC_VECTOR) += ixgbe_rxtx_vec_neon.c
 else

drivers/net/ixgbe/ixgbe_ethdev.c

@@ -6533,6 +6533,7 @@ ixgbe_add_del_ethertype_filter(struct rte_eth_dev *dev,
 		ethertype_filter.ethertype = filter->ether_type;
 		ethertype_filter.etqf = etqf;
 		ethertype_filter.etqs = etqs;
+		ethertype_filter.conf = FALSE;
 		ret = ixgbe_ethertype_filter_insert(filter_info,
 						    &ethertype_filter);
 		if (ret < 0) {
@@ -6634,7 +6635,7 @@ ixgbe_dev_filter_ctrl(struct rte_eth_dev *dev,
 		     enum rte_filter_op filter_op,
 		     void *arg)
 {
-	int ret = -EINVAL;
+	int ret = 0;
 
 	switch (filter_type) {
 	case RTE_ETH_FILTER_NTUPLE:
@@ -6652,9 +6653,15 @@ ixgbe_dev_filter_ctrl(struct rte_eth_dev *dev,
 	case RTE_ETH_FILTER_L2_TUNNEL:
 		ret = ixgbe_dev_l2_tunnel_filter_handle(dev, filter_op, arg);
 		break;
+	case RTE_ETH_FILTER_GENERIC:
+		if (filter_op != RTE_ETH_FILTER_GET)
+			return -EINVAL;
+		*(const void **)arg = &ixgbe_flow_ops;
+		break;
 	default:
 		PMD_DRV_LOG(WARNING, "Filter type (%d) not supported",
 							filter_type);
+		ret = -EINVAL;
 		break;
 	}
 
@@ -8570,6 +8577,76 @@ ixgbe_l2_tunnel_conf(struct rte_eth_dev *dev)
 	(void)ixgbe_update_e_tag_eth_type(hw, l2_tn_info->e_tag_ether_type);
 }
 
+/* remove all the n-tuple filters */
+void
+ixgbe_clear_all_ntuple_filter(struct rte_eth_dev *dev)
+{
+	struct ixgbe_filter_info *filter_info =
+		IXGBE_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+	struct ixgbe_5tuple_filter *p_5tuple;
+
+	while ((p_5tuple = TAILQ_FIRST(&filter_info->fivetuple_list)))
+		ixgbe_remove_5tuple_filter(dev, p_5tuple);
+}
+
+/* remove all the ether type filters */
+void
+ixgbe_clear_all_ethertype_filter(struct rte_eth_dev *dev)
+{
+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct ixgbe_filter_info *filter_info =
+		IXGBE_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+	int i;
+
+	for (i = 0; i < IXGBE_MAX_ETQF_FILTERS; i++) {
+		if (filter_info->ethertype_mask & (1 << i) &&
+		    !filter_info->ethertype_filters[i].conf) {
+			(void)ixgbe_ethertype_filter_remove(filter_info,
+							    (uint8_t)i);
+			IXGBE_WRITE_REG(hw, IXGBE_ETQF(i), 0);
+			IXGBE_WRITE_REG(hw, IXGBE_ETQS(i), 0);
+			IXGBE_WRITE_FLUSH(hw);
+		}
+	}
+}
+
+/* remove the SYN filter */
+void
+ixgbe_clear_syn_filter(struct rte_eth_dev *dev)
+{
+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct ixgbe_filter_info *filter_info =
+		IXGBE_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+
+	if (filter_info->syn_info & IXGBE_SYN_FILTER_ENABLE) {
+		filter_info->syn_info = 0;
+
+		IXGBE_WRITE_REG(hw, IXGBE_SYNQF, 0);
+		IXGBE_WRITE_FLUSH(hw);
+	}
+}
+
+/* remove all the L2 tunnel filters */
+int ixgbe_clear_all_l2_tn_filter(struct rte_eth_dev *dev)
+{
+	struct ixgbe_l2_tn_info *l2_tn_info =
+		IXGBE_DEV_PRIVATE_TO_L2_TN_INFO(dev->data->dev_private);
+	struct ixgbe_l2_tn_filter *l2_tn_filter;
+	struct rte_eth_l2_tunnel_conf l2_tn_conf;
+	int ret = 0;
+
+	while ((l2_tn_filter = TAILQ_FIRST(&l2_tn_info->l2_tn_list))) {
+		l2_tn_conf.l2_tunnel_type = l2_tn_filter->key.l2_tn_type;
+		l2_tn_conf.tunnel_id      = l2_tn_filter->key.tn_id;
+		l2_tn_conf.pool           = l2_tn_filter->pool;
+		ret = ixgbe_dev_l2_tunnel_filter_del(dev, &l2_tn_conf);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
 RTE_PMD_REGISTER_PCI(net_ixgbe, rte_ixgbe_pmd.pci_drv);
 RTE_PMD_REGISTER_PCI_TABLE(net_ixgbe, pci_id_ixgbe_map);
 RTE_PMD_REGISTER_KMOD_DEP(net_ixgbe, "* igb_uio | uio_pci_generic | vfio");

drivers/net/ixgbe/ixgbe_ethdev.h

@@ -279,6 +279,11 @@ struct ixgbe_ethertype_filter {
 	uint16_t ethertype;
 	uint32_t etqf;
 	uint32_t etqs;
+	/**
+	 * If this filter is added by configuration,
+	 * it should not be removed.
+	 */
+	bool     conf;
 };
 
 /*
@@ -542,6 +547,14 @@ uint32_t ixgbe_convert_vm_rx_mask_to_val(uint16_t rx_mask, uint32_t orig_val);
 int ixgbe_fdir_ctrl_func(struct rte_eth_dev *dev,
 			enum rte_filter_op filter_op, void *arg);
 void ixgbe_fdir_filter_restore(struct rte_eth_dev *dev);
+int ixgbe_clear_all_fdir_filter(struct rte_eth_dev *dev);
+
+extern const struct rte_flow_ops ixgbe_flow_ops;
+
+void ixgbe_clear_all_ethertype_filter(struct rte_eth_dev *dev);
+void ixgbe_clear_all_ntuple_filter(struct rte_eth_dev *dev);
+void ixgbe_clear_syn_filter(struct rte_eth_dev *dev);
+int ixgbe_clear_all_l2_tn_filter(struct rte_eth_dev *dev);
 
 int ixgbe_disable_sec_tx_path_generic(struct ixgbe_hw *hw);
 
@@ -576,6 +589,8 @@ ixgbe_ethertype_filter_insert(struct ixgbe_filter_info *filter_info,
 				ethertype_filter->etqf;
 			filter_info->ethertype_filters[i].etqs =
 				ethertype_filter->etqs;
+			filter_info->ethertype_filters[i].conf =
+				ethertype_filter->conf;
 			return i;
 		}
 	}
@@ -592,6 +607,7 @@ ixgbe_ethertype_filter_remove(struct ixgbe_filter_info *filter_info,
 	filter_info->ethertype_filters[idx].ethertype = 0;
 	filter_info->ethertype_filters[idx].etqf = 0;
 	filter_info->ethertype_filters[idx].etqs = 0;
+	filter_info->ethertype_filters[idx].etqs = FALSE;
 	return idx;
 }
 

drivers/net/ixgbe/ixgbe_fdir.c

@@ -1514,3 +1514,27 @@ ixgbe_fdir_filter_restore(struct rte_eth_dev *dev)
 		}
 	}
 }
+
+/* remove all the flow director filters */
+int
+ixgbe_clear_all_fdir_filter(struct rte_eth_dev *dev)
+{
+	struct ixgbe_hw_fdir_info *fdir_info =
+		IXGBE_DEV_PRIVATE_TO_FDIR_INFO(dev->data->dev_private);
+	struct ixgbe_fdir_filter *fdir_filter;
+	int ret = 0;
+
+	/* flush flow director */
+	rte_hash_reset(fdir_info->hash_handle);
+	memset(fdir_info->hash_map, 0,
+	       sizeof(struct ixgbe_fdir_filter *) * IXGBE_MAX_FDIR_FILTER_NUM);
+	while ((fdir_filter = TAILQ_FIRST(&fdir_info->fdir_list))) {
+		TAILQ_REMOVE(&fdir_info->fdir_list,
+			     fdir_filter,
+			     entries);
+		rte_free(fdir_filter);
+	}
+	ret = ixgbe_fdir_flush(dev);
+
+	return ret;
+}

drivers/net/ixgbe/ixgbe_flow.c

@@ -0,0 +1,115 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/queue.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <netinet/in.h>
+#include <rte_byteorder.h>
+#include <rte_common.h>
+#include <rte_cycles.h>
+
+#include <rte_interrupts.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_pci.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_alarm.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_atomic.h>
+#include <rte_malloc.h>
+#include <rte_random.h>
+#include <rte_dev.h>
+#include <rte_hash_crc.h>
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
+
+#include "ixgbe_logs.h"
+#include "base/ixgbe_api.h"
+#include "base/ixgbe_vf.h"
+#include "base/ixgbe_common.h"
+#include "ixgbe_ethdev.h"
+#include "ixgbe_bypass.h"
+#include "ixgbe_rxtx.h"
+#include "base/ixgbe_type.h"
+#include "base/ixgbe_phy.h"
+#include "rte_pmd_ixgbe.h"
+
+static int ixgbe_flow_flush(struct rte_eth_dev *dev,
+		struct rte_flow_error *error);
+
+const struct rte_flow_ops ixgbe_flow_ops = {
+	NULL,
+	NULL,
+	NULL,
+	ixgbe_flow_flush,
+	NULL,
+};
+
+/*  Destroy all flow rules associated with a port on ixgbe. */
+static int
+ixgbe_flow_flush(struct rte_eth_dev *dev,
+		struct rte_flow_error *error)
+{
+	int ret = 0;
+
+	ixgbe_clear_all_ntuple_filter(dev);
+	ixgbe_clear_all_ethertype_filter(dev);
+	ixgbe_clear_syn_filter(dev);
+
+	ret = ixgbe_clear_all_fdir_filter(dev);
+	if (ret < 0) {
+		rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
+					NULL, "Failed to flush rule");
+		return ret;
+	}
+
+	ret = ixgbe_clear_all_l2_tn_filter(dev);
+	if (ret < 0) {
+		rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
+					NULL, "Failed to flush rule");
+		return ret;
+	}
+
+	return 0;
+}

drivers/net/ixgbe/ixgbe_pf.c

@@ -199,6 +199,7 @@ ixgbe_add_tx_flow_control_drop_filter(struct rte_eth_dev *eth_dev)
 				IXGBE_ETQF_TX_ANTISPOOF |
 				IXGBE_ETHERTYPE_FLOW_CTRL;
 	ethertype_filter.etqs = 0;
+	ethertype_filter.conf = TRUE;
 	i = ixgbe_ethertype_filter_insert(filter_info,
 					  &ethertype_filter);
 	if (i < 0) {