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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2017 6WIND S.A.
* Copyright 2017 Mellanox Technologies, Ltd
*/
#include <sys/queue.h>
#include <rte_malloc.h>
#include <rte_tailq.h>
#include <rte_flow.h>
#include <rte_flow_driver.h>
#include "failsafe_private.h"
static struct rte_flow *
fs_flow_allocate(const struct rte_flow_attr *attr,
const struct rte_flow_item *items,
const struct rte_flow_action *actions)
{
struct rte_flow *flow;
size_t fdsz;
fdsz = rte_flow_copy(NULL, 0, attr, items, actions);
flow = rte_zmalloc(NULL,
sizeof(struct rte_flow) + fdsz,
RTE_CACHE_LINE_SIZE);
if (flow == NULL) {
ERROR("Could not allocate new flow");
return NULL;
}
flow->fd = (void *)((uintptr_t)flow + sizeof(*flow));
if (rte_flow_copy(flow->fd, fdsz, attr, items, actions) != fdsz) {
ERROR("Failed to copy flow description");
rte_free(flow);
return NULL;
}
return flow;
}
static void
fs_flow_release(struct rte_flow **flow)
{
rte_free(*flow);
*flow = NULL;
}
static int
fs_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item patterns[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct sub_device *sdev;
uint8_t i;
int ret;
fs_lock(dev, 0);
FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
DEBUG("Calling rte_flow_validate on sub_device %d", i);
ret = rte_flow_validate(PORT_ID(sdev),
attr, patterns, actions, error);
if ((ret = fs_err(sdev, ret))) {
ERROR("Operation rte_flow_validate failed for sub_device %d"
" with error %d", i, ret);
fs_unlock(dev, 0);
return ret;
}
}
fs_unlock(dev, 0);
return 0;
}
static struct rte_flow *
fs_flow_create(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item patterns[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct sub_device *sdev;
struct rte_flow *flow;
uint8_t i;
fs_lock(dev, 0);
flow = fs_flow_allocate(attr, patterns, actions);
FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
flow->flows[i] = rte_flow_create(PORT_ID(sdev),
attr, patterns, actions, error);
if (flow->flows[i] == NULL && fs_err(sdev, -rte_errno)) {
ERROR("Failed to create flow on sub_device %d",
i);
goto err;
}
}
TAILQ_INSERT_TAIL(&PRIV(dev)->flow_list, flow, next);
fs_unlock(dev, 0);
return flow;
err:
FOREACH_SUBDEV(sdev, i, dev) {
if (flow->flows[i] != NULL)
rte_flow_destroy(PORT_ID(sdev),
flow->flows[i], error);
}
fs_flow_release(&flow);
fs_unlock(dev, 0);
return NULL;
}
static int
fs_flow_destroy(struct rte_eth_dev *dev,
struct rte_flow *flow,
struct rte_flow_error *error)
{
struct sub_device *sdev;
uint8_t i;
int ret;
if (flow == NULL) {
ERROR("Invalid flow");
return -EINVAL;
}
ret = 0;
fs_lock(dev, 0);
FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
int local_ret;
if (flow->flows[i] == NULL)
continue;
local_ret = rte_flow_destroy(PORT_ID(sdev),
flow->flows[i], error);
if ((local_ret = fs_err(sdev, local_ret))) {
ERROR("Failed to destroy flow on sub_device %d: %d",
i, local_ret);
if (ret == 0)
ret = local_ret;
}
}
TAILQ_REMOVE(&PRIV(dev)->flow_list, flow, next);
fs_flow_release(&flow);
fs_unlock(dev, 0);
return ret;
}
static int
fs_flow_flush(struct rte_eth_dev *dev,
struct rte_flow_error *error)
{
struct sub_device *sdev;
struct rte_flow *flow;
void *tmp;
uint8_t i;
int ret;
fs_lock(dev, 0);
FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
DEBUG("Calling rte_flow_flush on sub_device %d", i);
ret = rte_flow_flush(PORT_ID(sdev), error);
if ((ret = fs_err(sdev, ret))) {
ERROR("Operation rte_flow_flush failed for sub_device %d"
" with error %d", i, ret);
fs_unlock(dev, 0);
return ret;
}
}
TAILQ_FOREACH_SAFE(flow, &PRIV(dev)->flow_list, next, tmp) {
TAILQ_REMOVE(&PRIV(dev)->flow_list, flow, next);
fs_flow_release(&flow);
}
fs_unlock(dev, 0);
return 0;
}
static int
fs_flow_query(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_action *action,
void *arg,
struct rte_flow_error *error)
{
struct sub_device *sdev;
fs_lock(dev, 0);
sdev = TX_SUBDEV(dev);
if (sdev != NULL) {
int ret = rte_flow_query(PORT_ID(sdev),
flow->flows[SUB_ID(sdev)],
action, arg, error);
if ((ret = fs_err(sdev, ret))) {
fs_unlock(dev, 0);
return ret;
}
}
fs_unlock(dev, 0);
WARN("No active sub_device to query about its flow");
return -1;
}
static int
fs_flow_isolate(struct rte_eth_dev *dev,
int set,
struct rte_flow_error *error)
{
struct sub_device *sdev;
uint8_t i;
int ret;
fs_lock(dev, 0);
FOREACH_SUBDEV(sdev, i, dev) {
if (sdev->state < DEV_PROBED)
continue;
DEBUG("Calling rte_flow_isolate on sub_device %d", i);
if (PRIV(dev)->flow_isolated != sdev->flow_isolated)
WARN("flow isolation mode of sub_device %d in incoherent state.",
i);
ret = rte_flow_isolate(PORT_ID(sdev), set, error);
if ((ret = fs_err(sdev, ret))) {
ERROR("Operation rte_flow_isolate failed for sub_device %d"
" with error %d", i, ret);
fs_unlock(dev, 0);
return ret;
}
sdev->flow_isolated = set;
}
PRIV(dev)->flow_isolated = set;
fs_unlock(dev, 0);
return 0;
}
const struct rte_flow_ops fs_flow_ops = {
.validate = fs_flow_validate,
.create = fs_flow_create,
.destroy = fs_flow_destroy,
.flush = fs_flow_flush,
.query = fs_flow_query,
.isolate = fs_flow_isolate,
};
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