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/*-
* BSD LICENSE
*
* Copyright(c) 2016 RehiveTech. 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 RehiveTech 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 <string.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/queue.h>
#include <rte_vdev.h>
#include <rte_common.h>
struct vdev_driver_list vdev_driver_list =
TAILQ_HEAD_INITIALIZER(vdev_driver_list);
/* register a driver */
void
rte_eal_vdrv_register(struct rte_vdev_driver *driver)
{
TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
rte_eal_driver_register(&driver->driver);
}
/* unregister a driver */
void
rte_eal_vdrv_unregister(struct rte_vdev_driver *driver)
{
rte_eal_driver_unregister(&driver->driver);
TAILQ_REMOVE(&vdev_driver_list, driver, next);
}
int
rte_eal_vdev_init(const char *name, const char *args)
{
struct rte_vdev_driver *driver;
if (name == NULL)
return -EINVAL;
TAILQ_FOREACH(driver, &vdev_driver_list, next) {
/*
* search a driver prefix in virtual device name.
* For example, if the driver is pcap PMD, driver->name
* will be "net_pcap", but "name" will be "net_pcapN".
* So use strncmp to compare.
*/
if (!strncmp(driver->driver.name, name,
strlen(driver->driver.name)))
return driver->probe(name, args);
}
/* Give new names precedence over aliases. */
TAILQ_FOREACH(driver, &vdev_driver_list, next) {
if (driver->driver.alias &&
!strncmp(driver->driver.alias, name,
strlen(driver->driver.alias)))
return driver->probe(name, args);
}
RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
return -EINVAL;
}
int
rte_eal_vdev_uninit(const char *name)
{
struct rte_vdev_driver *driver;
if (name == NULL)
return -EINVAL;
TAILQ_FOREACH(driver, &vdev_driver_list, next) {
/*
* search a driver prefix in virtual device name.
* For example, if the driver is pcap PMD, driver->name
* will be "net_pcap", but "name" will be "net_pcapN".
* So use strncmp to compare.
*/
if (!strncmp(driver->driver.name, name,
strlen(driver->driver.name)))
return driver->remove(name);
}
/* Give new names precedence over aliases. */
TAILQ_FOREACH(driver, &vdev_driver_list, next) {
if (driver->driver.alias &&
!strncmp(driver->driver.alias, name,
strlen(driver->driver.alias)))
return driver->remove(name);
}
RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
return -EINVAL;
}
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