[PATCH v5 1/6] net/mlx5: add preliminary flow API support

[Nelio Laranjeiro <nelio.laranjeiro@6wind.com>]

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
 drivers/net/mlx5/Makefile    |   1 +
 drivers/net/mlx5/mlx5.h      |  16 ++++++
 drivers/net/mlx5/mlx5_fdir.c |  15 ++++++
 drivers/net/mlx5/mlx5_flow.c | 124 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 156 insertions(+)
 create mode 100644 drivers/net/mlx5/mlx5_flow.c

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index cf87f0b..6d1338a 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -48,6 +48,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_stats.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_rss.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_fdir.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_mr.c
+SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow.c
 
 # Dependencies.
 DEPDIRS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += lib/librte_ether
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 79b7a60..04f4eaa 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -59,6 +59,7 @@
 #include <rte_spinlock.h>
 #include <rte_interrupts.h>
 #include <rte_errno.h>
+#include <rte_flow.h>
 #ifdef PEDANTIC
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
@@ -268,4 +269,19 @@ void priv_fdir_enable(struct priv *);
 int mlx5_dev_filter_ctrl(struct rte_eth_dev *, enum rte_filter_type,
 			 enum rte_filter_op, void *);
 
+/* mlx5_flow.c */
+
+int mlx5_flow_validate(struct rte_eth_dev *, const struct rte_flow_attr *,
+		       const struct rte_flow_item [],
+		       const struct rte_flow_action [],
+		       struct rte_flow_error *);
+struct rte_flow *mlx5_flow_create(struct rte_eth_dev *,
+				  const struct rte_flow_attr *,
+				  const struct rte_flow_item [],
+				  const struct rte_flow_action [],
+				  struct rte_flow_error *);
+int mlx5_flow_destroy(struct rte_eth_dev *, struct rte_flow *,
+		      struct rte_flow_error *);
+int mlx5_flow_flush(struct rte_eth_dev *, struct rte_flow_error *);
+
 #endif /* RTE_PMD_MLX5_H_ */
diff --git a/drivers/net/mlx5/mlx5_fdir.c b/drivers/net/mlx5/mlx5_fdir.c
index 1acf682..f80c58b 100644
--- a/drivers/net/mlx5/mlx5_fdir.c
+++ b/drivers/net/mlx5/mlx5_fdir.c
@@ -55,6 +55,8 @@
 #include <rte_malloc.h>
 #include <rte_ethdev.h>
 #include <rte_common.h>
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
 #ifdef PEDANTIC
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
@@ -1042,6 +1044,14 @@ priv_fdir_ctrl_func(struct priv *priv, enum rte_filter_op filter_op, void *arg)
 	return ret;
 }
 
+static const struct rte_flow_ops mlx5_flow_ops = {
+	.validate = mlx5_flow_validate,
+	.create = mlx5_flow_create,
+	.destroy = mlx5_flow_destroy,
+	.flush = mlx5_flow_flush,
+	.query = NULL,
+};
+
 /**
  * Manage filter operations.
  *
@@ -1067,6 +1077,11 @@ mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
 	struct priv *priv = dev->data->dev_private;
 
 	switch (filter_type) {
+	case RTE_ETH_FILTER_GENERIC:
+		if (filter_op != RTE_ETH_FILTER_GET)
+			return -EINVAL;
+		*(const void **)arg = &mlx5_flow_ops;
+		return 0;
 	case RTE_ETH_FILTER_FDIR:
 		priv_lock(priv);
 		ret = priv_fdir_ctrl_func(priv, filter_op, arg);
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
new file mode 100644
index 0000000..4fdefa0
--- /dev/null
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -0,0 +1,124 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2016 6WIND S.A.
+ *   Copyright 2016 Mellanox.
+ *
+ *   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 6WIND S.A. 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 <rte_ethdev.h>
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
+
+#include "mlx5.h"
+
+/**
+ * Validate a flow supported by the NIC.
+ *
+ * @see rte_flow_validate()
+ * @see rte_flow_ops
+ */
+int
+mlx5_flow_validate(struct rte_eth_dev *dev,
+		   const struct rte_flow_attr *attr,
+		   const struct rte_flow_item items[],
+		   const struct rte_flow_action actions[],
+		   struct rte_flow_error *error)
+{
+	(void)dev;
+	(void)attr;
+	(void)items;
+	(void)actions;
+	(void)error;
+	rte_flow_error_set(error, ENOTSUP,
+			   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+			   NULL, "not implemented yet");
+	return -rte_errno;
+}
+
+/**
+ * Create a flow.
+ *
+ * @see rte_flow_create()
+ * @see rte_flow_ops
+ */
+struct rte_flow *
+mlx5_flow_create(struct rte_eth_dev *dev,
+		 const struct rte_flow_attr *attr,
+		 const struct rte_flow_item items[],
+		 const struct rte_flow_action actions[],
+		 struct rte_flow_error *error)
+{
+	(void)dev;
+	(void)attr;
+	(void)items;
+	(void)actions;
+	(void)error;
+	rte_flow_error_set(error, ENOTSUP,
+			   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+			   NULL, "not implemented yet");
+	return NULL;
+}
+
+/**
+ * Destroy a flow.
+ *
+ * @see rte_flow_destroy()
+ * @see rte_flow_ops
+ */
+int
+mlx5_flow_destroy(struct rte_eth_dev *dev,
+		  struct rte_flow *flow,
+		  struct rte_flow_error *error)
+{
+	(void)dev;
+	(void)flow;
+	(void)error;
+	rte_flow_error_set(error, ENOTSUP,
+			   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+			   NULL, "not implemented yet");
+	return -rte_errno;
+}
+
+/**
+ * Destroy all flows.
+ *
+ * @see rte_flow_flush()
+ * @see rte_flow_ops
+ */
+int
+mlx5_flow_flush(struct rte_eth_dev *dev,
+		struct rte_flow_error *error)
+{
+	(void)dev;
+	(void)error;
+	rte_flow_error_set(error, ENOTSUP,
+			   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+			   NULL, "not implemented yet");
+	return -rte_errno;
+}
-- 
2.1.4