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/*-
* 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 <stdint.h>
#include <rte_errno.h>
#include <rte_branch_prediction.h>
#include "rte_ethdev.h"
#include "rte_flow_driver.h"
#include "rte_flow.h"
/* Get generic flow operations structure from a port. */
const struct rte_flow_ops *
rte_flow_ops_get(uint8_t port_id, struct rte_flow_error *error)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
const struct rte_flow_ops *ops;
int code;
if (unlikely(!rte_eth_dev_is_valid_port(port_id)))
code = ENODEV;
else if (unlikely(!dev->dev_ops->filter_ctrl ||
dev->dev_ops->filter_ctrl(dev,
RTE_ETH_FILTER_GENERIC,
RTE_ETH_FILTER_GET,
&ops) ||
!ops))
code = ENOSYS;
else
return ops;
rte_flow_error_set(error, code, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(code));
return NULL;
}
/* Check whether a flow rule can be created on a given port. */
int
rte_flow_validate(uint8_t port_id,
const struct rte_flow_attr *attr,
const struct rte_flow_item pattern[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
if (unlikely(!ops))
return -rte_errno;
if (likely(!!ops->validate))
return ops->validate(dev, attr, pattern, actions, error);
return -rte_flow_error_set(error, ENOSYS,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(ENOSYS));
}
/* Create a flow rule on a given port. */
struct rte_flow *
rte_flow_create(uint8_t port_id,
const struct rte_flow_attr *attr,
const struct rte_flow_item pattern[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
if (unlikely(!ops))
return NULL;
if (likely(!!ops->create))
return ops->create(dev, attr, pattern, actions, error);
rte_flow_error_set(error, ENOSYS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(ENOSYS));
return NULL;
}
/* Destroy a flow rule on a given port. */
int
rte_flow_destroy(uint8_t port_id,
struct rte_flow *flow,
struct rte_flow_error *error)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
if (unlikely(!ops))
return -rte_errno;
if (likely(!!ops->destroy))
return ops->destroy(dev, flow, error);
return -rte_flow_error_set(error, ENOSYS,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(ENOSYS));
}
/* Destroy all flow rules associated with a port. */
int
rte_flow_flush(uint8_t port_id,
struct rte_flow_error *error)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
if (unlikely(!ops))
return -rte_errno;
if (likely(!!ops->flush))
return ops->flush(dev, error);
return -rte_flow_error_set(error, ENOSYS,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(ENOSYS));
}
/* Query an existing flow rule. */
int
rte_flow_query(uint8_t port_id,
struct rte_flow *flow,
enum rte_flow_action_type action,
void *data,
struct rte_flow_error *error)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
if (!ops)
return -rte_errno;
if (likely(!!ops->query))
return ops->query(dev, flow, action, data, error);
return -rte_flow_error_set(error, ENOSYS,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(ENOSYS));
}
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