[dpdk-dev] [PATCH v5 4/8]librte_ether:add a common filter API

[Jijiang Liu <jijiang.liu@intel.com>]

Introduce a new filter framewok in librte_ether. As to the implemetation discussion, please refer to
http://dpdk.org/ml/archives/dev/2014-September/005179.html, and VxLAN tunnel filter implementation is based on
it.
 
Signed-off-by: Jijiang Liu <jijiang.liu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>

---
 lib/librte_ether/Makefile       |    1 +
 lib/librte_ether/rte_eth_ctrl.h |  152 +++++++++++++++++++++++++++++++++++++++
 lib/librte_ether/rte_ethdev.c   |   32 ++++++++
 lib/librte_ether/rte_ethdev.h   |   56 +++++++++++---
 4 files changed, 229 insertions(+), 12 deletions(-)
 create mode 100644 lib/librte_ether/rte_eth_ctrl.h

diff --git a/lib/librte_ether/Makefile b/lib/librte_ether/Makefile
index b310f8b..a461c31 100644
--- a/lib/librte_ether/Makefile
+++ b/lib/librte_ether/Makefile
@@ -46,6 +46,7 @@ SRCS-y += rte_ethdev.c
 #
 SYMLINK-y-include += rte_ether.h
 SYMLINK-y-include += rte_ethdev.h
+SYMLINK-y-include += rte_eth_ctrl.h
 
 # this lib depends upon:
 DEPDIRS-y += lib/librte_eal lib/librte_mempool lib/librte_ring lib/librte_mbuf
diff --git a/lib/librte_ether/rte_eth_ctrl.h b/lib/librte_ether/rte_eth_ctrl.h
new file mode 100644
index 0000000..574e9ff
--- /dev/null
+++ b/lib/librte_ether/rte_eth_ctrl.h
@@ -0,0 +1,152 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 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.
+ */
+
+#ifndef _RTE_ETH_CTRL_H_
+#define _RTE_ETH_CTRL_H_
+
+/**
+ * @file
+ *
+ * Ethernet device features and related data structures used
+ * by control APIs should be defined in this file.
+ *
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Feature filter types
+ */
+enum rte_filter_type {
+	RTE_ETH_FILTER_NONE = 0,
+	RTE_ETH_FILTER_HASH,
+	RTE_ETH_FILTER_FDIR,
+	RTE_ETH_FILTER_TUNNEL,
+	RTE_ETH_FILTER_MAX,
+};
+
+/**
+ * All generic operations to filters
+ */
+enum rte_filter_op {
+	/**< used to check whether the type filter is supported */
+	RTE_ETH_FILTER_OP_NONE = 0,
+	RTE_ETH_FILTER_OP_ADD,      /**< add filter entry */
+	RTE_ETH_FILTER_OP_UPDATE,   /**< update filter entry */
+	RTE_ETH_FILTER_OP_DELETE,   /**< delete filter entry */
+	RTE_ETH_FILTER_OP_GET,      /**< get filter entry */
+	RTE_ETH_FILTER_OP_SET,      /**< configurations */
+	/**< get information of filter, such as status or statistics */
+	RTE_ETH_FILTER_OP_GET_INFO,
+	RTE_ETH_FILTER_OP_MAX,
+};
+
+/**** TUNNEL FILTER DATA DEFINATION *** */
+
+#define ETH_TUNNEL_FILTER_OMAC  0x01
+#define ETH_TUNNEL_FILTER_OIP   0x02
+#define ETH_TUNNEL_FILTER_TENID 0x04
+#define ETH_TUNNEL_FILTER_IMAC  0x08
+#define ETH_TUNNEL_FILTER_IVLAN 0x10
+#define ETH_TUNNEL_FILTER_IIP   0x20
+
+#define RTE_TUNNEL_FLAGS_TO_QUEUE 1
+
+/*
+ * Tunneled filter type
+ */
+enum rte_tunnel_filter_type {
+	RTE_TUNNEL_FILTER_TYPE_NONE = 0,
+	RTE_TUNNEL_FILTER_OIP = ETH_TUNNEL_FILTER_OIP,
+	RTE_TUNNEL_FILTER_IMAC_IVLAN =
+		ETH_TUNNEL_FILTER_IMAC | ETH_TUNNEL_FILTER_IVLAN,
+	RTE_TUNNEL_FILTER_IMAC_IVLAN_TENID =
+		ETH_TUNNEL_FILTER_IMAC | ETH_TUNNEL_FILTER_IVLAN |
+		ETH_TUNNEL_FILTER_TENID,
+	RTE_TUNNEL_FILTER_IMAC_TENID =
+		ETH_TUNNEL_FILTER_IMAC | ETH_TUNNEL_FILTER_TENID,
+	RTE_TUNNEL_FILTER_IMAC = ETH_TUNNEL_FILTER_IMAC,
+	RTE_TUNNEL_FILTER_OMAC_TENID_IMAC =
+		ETH_TUNNEL_FILTER_OMAC | ETH_TUNNEL_FILTER_TENID |
+		ETH_TUNNEL_FILTER_IMAC,
+	RTE_TUNNEL_FILTER_IIP = ETH_TUNNEL_FILTER_IIP,
+	RTE_TUNNEL_FILTER_TYPE_MAX,
+};
+
+/**
+ *  Select IPv4 or IPv6 for tunnel filters.
+ */
+enum rte_tunnel_iptype {
+	RTE_TUNNEL_IPTYPE_IPV4 = 0, /**< IPv4. */
+	RTE_TUNNEL_IPTYPE_IPV6,     /**< IPv6. */
+};
+
+/**
+ * Tunneled type.
+ */
+enum rte_eth_tunnel_type {
+	RTE_TUNNEL_TYPE_NONE = 0,
+	RTE_TUNNEL_TYPE_VXLAN,
+	RTE_TUNNEL_TYPE_GENEVE,
+	RTE_TUNNEL_TYPE_TEREDO,
+	RTE_TUNNEL_TYPE_NVGRE,
+	RTE_TUNNEL_TYPE_MAX,
+};
+
+/**
+ * Tunnel Packet filter configuration.
+ */
+struct rte_eth_tunnel_filter_conf {
+	struct ether_addr *outer_mac;  /**< Outer MAC address fiter. */
+	struct ether_addr *inner_mac;  /**< Inner MAC address fiter. */
+	uint16_t inner_vlan;           /**< Inner VLAN fiter. */
+	enum rte_tunnel_iptype ip_type; /**< IP address type. */
+	union {
+		uint32_t ipv4_addr;    /**< IPv4 source address to match. */
+		uint32_t ipv6_addr[4]; /**< IPv6 source address to match. */
+	} ip_addr; /**< IPv4/IPv6 source address to match (union of above). */
+
+	uint8_t filter_type;           /**< Filter type. */
+	uint8_t to_queue;       /**< Use MAC and VLAN to point to a queue. */
+	enum rte_eth_tunnel_type tunnel_type; /**< Tunnel Type. */
+	uint32_t tenant_id;            /** < Tenant number. */
+	uint16_t queue_id;             /** < queue number. */
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_ETH_CTRL_H_ */
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 642d312..93f9f6f 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -3202,3 +3202,35 @@ rte_eth_dev_get_flex_filter(uint8_t port_id, uint16_t index,
 	return (*dev->dev_ops->get_flex_filter)(dev, index, filter,
 						rx_queue);
 }
+
+int
+rte_eth_dev_filter_supported(uint8_t port_id, enum rte_filter_type filter_type)
+{
+	struct rte_eth_dev *dev;
+
+	if (port_id >= nb_ports) {
+		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+		return -ENODEV;
+	}
+
+	dev = &rte_eth_devices[port_id];
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->filter_ctrl, -ENOTSUP);
+	return (*dev->dev_ops->filter_ctrl)(dev, filter_type,
+				RTE_ETH_FILTER_OP_NONE, NULL);
+}
+
+int
+rte_eth_dev_filter_ctrl(uint8_t port_id, enum rte_filter_type filter_type,
+		       enum rte_filter_op filter_op, void *arg)
+{
+	struct rte_eth_dev *dev;
+
+	if (port_id >= nb_ports) {
+		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+		return -ENODEV;
+	}
+
+	dev = &rte_eth_devices[port_id];
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->filter_ctrl, -ENOTSUP);
+	return (*dev->dev_ops->filter_ctrl)(dev, filter_type, filter_op, arg);
+}
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 3f84c23..68f4ab0 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -177,6 +177,7 @@ extern "C" {
 #include <rte_pci.h>
 #include <rte_mbuf.h>
 #include "rte_ether.h"
+#include "rte_eth_ctrl.h"
 
 /**
  * A structure used to retrieve statistics for an Ethernet port.
@@ -716,18 +717,6 @@ struct rte_eth_udp_tunnel {
 };
 
 /**
- * Tunneled type.
- */
-enum rte_eth_tunnel_type {
-	RTE_TUNNEL_TYPE_NONE = 0,
-	RTE_TUNNEL_TYPE_VXLAN,
-	RTE_TUNNEL_TYPE_GENEVE,
-	RTE_TUNNEL_TYPE_TEREDO,
-	RTE_TUNNEL_TYPE_NVGRE,
-	RTE_TUNNEL_TYPE_MAX,
-};
-
-/**
  *  Possible l4type of FDIR filters.
  */
 enum rte_l4type {
@@ -1415,6 +1404,12 @@ typedef int (*eth_get_flex_filter_t)(struct rte_eth_dev *dev,
 			uint16_t *rx_queue);
 /**< @internal Get a flex filter rule on an Ethernet device */
 
+typedef int (*eth_filter_ctrl_t)(struct rte_eth_dev *dev,
+				 enum rte_filter_type filter_type,
+				 enum rte_filter_op filter_op,
+				 void *arg);
+/**< @internal Take operations to assigned filter type on an Ethernet device */
+
 /**
  * @internal A structure containing the functions exported by an Ethernet driver.
  */
@@ -1525,6 +1520,7 @@ struct eth_dev_ops {
 	eth_add_flex_filter_t          add_flex_filter;      /**< add flex filter. */
 	eth_remove_flex_filter_t       remove_flex_filter;   /**< remove flex filter. */
 	eth_get_flex_filter_t          get_flex_filter;      /**< get flex filter. */
+	eth_filter_ctrl_t              filter_ctrl;          /**< common filter control*/
 };
 
 /**
@@ -3692,6 +3688,42 @@ int rte_eth_dev_remove_flex_filter(uint8_t port_id, uint16_t index);
 int rte_eth_dev_get_flex_filter(uint8_t port_id, uint16_t index,
 			struct rte_flex_filter *filter, uint16_t *rx_queue);
 
+/**
+ * Check whether the filter type is supported on an Ethernet device.
+ * All the supported filter types are defined in 'rte_eth_ctrl.h'.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param filter_type
+ *   filter type.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support this filter type.
+ *   - (-ENODEV) if *port_id* invalid.
+ */
+int rte_eth_dev_filter_supported(uint8_t port_id, enum rte_filter_type filter_type);
+
+/**
+ * Take operations to assigned filter type on an Ethernet device.
+ * All the supported operations and filter types are defined in 'rte_eth_ctrl.h'.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param filter_type
+ *   filter type.
+  * @param filter_op
+ *   The operation taken to assigned filter.
+ * @param arg
+ *   A pointer to arguments defined specifically for the operation.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - others depends on the specific operations implementation.
+ */
+int rte_eth_dev_filter_ctrl(uint8_t port_id, enum rte_filter_type filter_type,
+			enum rte_filter_op filter_op, void *arg);
+
 #ifdef __cplusplus
 }
 #endif
-- 
1.7.7.6