diff options
author | Luca Boccassi <luca.boccassi@gmail.com> | 2017-11-08 14:15:11 +0000 |
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committer | Luca Boccassi <luca.boccassi@gmail.com> | 2017-11-08 14:45:54 +0000 |
commit | 055c52583a2794da8ba1e85a48cce3832372b12f (patch) | |
tree | 8ceb1cb78fbb46a0f341f8ee24feb3c6b5540013 /lib/librte_eal/common/eal_common_vdev.c | |
parent | f239aed5e674965691846e8ce3f187dd47523689 (diff) |
New upstream version 17.11-rc3
Change-Id: I6a5baa40612fe0c20f30b5fa773a6cbbac63a685
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'lib/librte_eal/common/eal_common_vdev.c')
-rw-r--r-- | lib/librte_eal/common/eal_common_vdev.c | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c deleted file mode 100644 index f7e547a6..00000000 --- a/lib/librte_eal/common/eal_common_vdev.c +++ /dev/null @@ -1,342 +0,0 @@ -/*- - * 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 <stdbool.h> -#include <sys/queue.h> - -#include <rte_eal.h> -#include <rte_dev.h> -#include <rte_bus.h> -#include <rte_vdev.h> -#include <rte_common.h> -#include <rte_devargs.h> -#include <rte_memory.h> -#include <rte_errno.h> - -/* Forward declare to access virtual bus name */ -static struct rte_bus rte_vdev_bus; - -/** Double linked list of virtual device drivers. */ -TAILQ_HEAD(vdev_device_list, rte_vdev_device); - -static struct vdev_device_list vdev_device_list = - TAILQ_HEAD_INITIALIZER(vdev_device_list); -struct vdev_driver_list vdev_driver_list = - TAILQ_HEAD_INITIALIZER(vdev_driver_list); - -/* register a driver */ -void -rte_vdev_register(struct rte_vdev_driver *driver) -{ - TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next); -} - -/* unregister a driver */ -void -rte_vdev_unregister(struct rte_vdev_driver *driver) -{ - TAILQ_REMOVE(&vdev_driver_list, driver, next); -} - -static int -vdev_parse(const char *name, void *addr) -{ - struct rte_vdev_driver **out = addr; - struct rte_vdev_driver *driver = NULL; - - TAILQ_FOREACH(driver, &vdev_driver_list, next) { - if (strncmp(driver->driver.name, name, - strlen(driver->driver.name)) == 0) - break; - if (driver->driver.alias && - strncmp(driver->driver.alias, name, - strlen(driver->driver.alias)) == 0) - break; - } - if (driver != NULL && - addr != NULL) - *out = driver; - return driver == NULL; -} - -static int -vdev_probe_all_drivers(struct rte_vdev_device *dev) -{ - const char *name; - struct rte_vdev_driver *driver; - int ret; - - name = rte_vdev_device_name(dev); - - RTE_LOG(DEBUG, EAL, "Search driver %s to probe device %s\n", name, - rte_vdev_device_name(dev)); - - if (vdev_parse(name, &driver)) - return -1; - dev->device.driver = &driver->driver; - ret = driver->probe(dev); - if (ret) - dev->device.driver = NULL; - return ret; -} - -static struct rte_vdev_device * -find_vdev(const char *name) -{ - struct rte_vdev_device *dev; - - if (!name) - return NULL; - - TAILQ_FOREACH(dev, &vdev_device_list, next) { - const char *devname = rte_vdev_device_name(dev); - if (!strncmp(devname, name, strlen(name))) - return dev; - } - - return NULL; -} - -static struct rte_devargs * -alloc_devargs(const char *name, const char *args) -{ - struct rte_devargs *devargs; - int ret; - - devargs = calloc(1, sizeof(*devargs)); - if (!devargs) - return NULL; - - devargs->bus = &rte_vdev_bus; - if (args) - devargs->args = strdup(args); - else - devargs->args = strdup(""); - - ret = snprintf(devargs->name, sizeof(devargs->name), "%s", name); - if (ret < 0 || ret >= (int)sizeof(devargs->name)) { - free(devargs->args); - free(devargs); - return NULL; - } - - return devargs; -} - -int -rte_vdev_init(const char *name, const char *args) -{ - struct rte_vdev_device *dev; - struct rte_devargs *devargs; - int ret; - - if (name == NULL) - return -EINVAL; - - dev = find_vdev(name); - if (dev) - return -EEXIST; - - devargs = alloc_devargs(name, args); - if (!devargs) - return -ENOMEM; - - dev = calloc(1, sizeof(*dev)); - if (!dev) { - ret = -ENOMEM; - goto fail; - } - - dev->device.devargs = devargs; - dev->device.numa_node = SOCKET_ID_ANY; - dev->device.name = devargs->name; - - ret = vdev_probe_all_drivers(dev); - if (ret) { - if (ret > 0) - RTE_LOG(ERR, EAL, "no driver found for %s\n", name); - goto fail; - } - - TAILQ_INSERT_TAIL(&devargs_list, devargs, next); - - TAILQ_INSERT_TAIL(&vdev_device_list, dev, next); - return 0; - -fail: - free(devargs->args); - free(devargs); - free(dev); - return ret; -} - -static int -vdev_remove_driver(struct rte_vdev_device *dev) -{ - const char *name = rte_vdev_device_name(dev); - const struct rte_vdev_driver *driver; - - if (!dev->device.driver) { - RTE_LOG(DEBUG, EAL, "no driver attach to device %s\n", name); - return 1; - } - - driver = container_of(dev->device.driver, const struct rte_vdev_driver, - driver); - return driver->remove(dev); -} - -int -rte_vdev_uninit(const char *name) -{ - struct rte_vdev_device *dev; - struct rte_devargs *devargs; - int ret; - - if (name == NULL) - return -EINVAL; - - dev = find_vdev(name); - if (!dev) - return -ENOENT; - - devargs = dev->device.devargs; - - ret = vdev_remove_driver(dev); - if (ret) - return ret; - - TAILQ_REMOVE(&vdev_device_list, dev, next); - - TAILQ_REMOVE(&devargs_list, devargs, next); - - free(devargs->args); - free(devargs); - free(dev); - return 0; -} - -static int -vdev_scan(void) -{ - struct rte_vdev_device *dev; - struct rte_devargs *devargs; - - /* for virtual devices we scan the devargs_list populated via cmdline */ - TAILQ_FOREACH(devargs, &devargs_list, next) { - - if (devargs->bus != &rte_vdev_bus) - continue; - - dev = find_vdev(devargs->name); - if (dev) - continue; - - dev = calloc(1, sizeof(*dev)); - if (!dev) - return -1; - - dev->device.devargs = devargs; - dev->device.numa_node = SOCKET_ID_ANY; - dev->device.name = devargs->name; - - TAILQ_INSERT_TAIL(&vdev_device_list, dev, next); - } - - return 0; -} - -static int -vdev_probe(void) -{ - struct rte_vdev_device *dev; - - /* call the init function for each virtual device */ - TAILQ_FOREACH(dev, &vdev_device_list, next) { - - if (dev->device.driver) - continue; - - if (vdev_probe_all_drivers(dev)) { - RTE_LOG(ERR, EAL, "failed to initialize %s device\n", - rte_vdev_device_name(dev)); - return -1; - } - } - - return 0; -} - -static struct rte_device * -vdev_find_device(const struct rte_device *start, rte_dev_cmp_t cmp, - const void *data) -{ - struct rte_vdev_device *dev; - - TAILQ_FOREACH(dev, &vdev_device_list, next) { - if (start && &dev->device == start) { - start = NULL; - continue; - } - if (cmp(&dev->device, data) == 0) - return &dev->device; - } - return NULL; -} - -static int -vdev_plug(struct rte_device *dev) -{ - return vdev_probe_all_drivers(RTE_DEV_TO_VDEV(dev)); -} - -static int -vdev_unplug(struct rte_device *dev) -{ - return rte_vdev_uninit(dev->name); -} - -static struct rte_bus rte_vdev_bus = { - .scan = vdev_scan, - .probe = vdev_probe, - .find_device = vdev_find_device, - .plug = vdev_plug, - .unplug = vdev_unplug, - .parse = vdev_parse, -}; - -RTE_REGISTER_BUS(vdev, rte_vdev_bus); |