#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>
/** Double linked list of virtual device drivers. */
TAILQ_HEAD(vdev_device_list, rte_vdev_device);
struct vdev_driver_list vdev_driver_list =
TAILQ_HEAD_INITIALIZER(vdev_driver_list);
-static void rte_vdev_bus_register(void);
-
/* register a driver */
void
-rte_eal_vdrv_register(struct rte_vdev_driver *driver)
+rte_vdev_register(struct rte_vdev_driver *driver)
{
- rte_vdev_bus_register();
-
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_vdev_unregister(struct rte_vdev_driver *driver)
{
- rte_eal_driver_unregister(&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 = rte_vdev_device_name(dev);
+ const char *name;
struct rte_vdev_driver *driver;
int ret;
- 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))) {
- dev->device.driver = &driver->driver;
- ret = driver->probe(dev);
- if (ret)
- dev->device.driver = NULL;
- return ret;
- }
- }
+ name = rte_vdev_device_name(dev);
- /* 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))) {
- dev->device.driver = &driver->driver;
- ret = driver->probe(dev);
- if (ret)
- dev->device.driver = NULL;
- return ret;
- }
- }
+ RTE_LOG(DEBUG, EAL, "Search driver %s to probe device %s\n", name,
+ rte_vdev_device_name(dev));
- return 1;
+ 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 *
if (!devargs)
return NULL;
- devargs->type = RTE_DEVTYPE_VIRTUAL;
+ devargs->bus = rte_bus_find_by_name("vdev");
if (args)
devargs->args = strdup(args);
- ret = snprintf(devargs->virt.drv_name,
- sizeof(devargs->virt.drv_name), "%s", name);
- if (ret < 0 || ret >= (int)sizeof(devargs->virt.drv_name)) {
+ ret = snprintf(devargs->name, sizeof(devargs->name), "%s", name);
+ if (ret < 0 || ret >= (int)sizeof(devargs->name)) {
free(devargs->args);
free(devargs);
return NULL;
}
int
-rte_eal_vdev_init(const char *name, const char *args)
+rte_vdev_init(const char *name, const char *args)
{
struct rte_vdev_device *dev;
struct rte_devargs *devargs;
dev->device.devargs = devargs;
dev->device.numa_node = SOCKET_ID_ANY;
- dev->device.name = devargs->virt.drv_name;
+ dev->device.name = devargs->name;
ret = vdev_probe_all_drivers(dev);
if (ret) {
TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
- rte_eal_device_insert(&dev->device);
TAILQ_INSERT_TAIL(&vdev_device_list, dev, next);
return 0;
}
int
-rte_eal_vdev_uninit(const char *name)
+rte_vdev_uninit(const char *name)
{
struct rte_vdev_device *dev;
struct rte_devargs *devargs;
return ret;
TAILQ_REMOVE(&vdev_device_list, dev, next);
- rte_eal_device_remove(&dev->device);
TAILQ_REMOVE(&devargs_list, devargs, next);
{
struct rte_vdev_device *dev;
struct rte_devargs *devargs;
+ struct rte_bus *vbus;
/* for virtual devices we scan the devargs_list populated via cmdline */
-
+ vbus = rte_bus_find_by_name("vdev");
TAILQ_FOREACH(devargs, &devargs_list, next) {
- if (devargs->type != RTE_DEVTYPE_VIRTUAL)
+ if (devargs->bus != vbus)
continue;
- dev = find_vdev(devargs->virt.drv_name);
+ dev = find_vdev(devargs->name);
if (dev)
continue;
dev->device.devargs = devargs;
dev->device.numa_node = SOCKET_ID_ANY;
- dev->device.name = devargs->virt.drv_name;
+ dev->device.name = devargs->name;
- rte_eal_device_insert(&dev->device);
TAILQ_INSERT_TAIL(&vdev_device_list, dev, next);
}
{
struct rte_vdev_device *dev;
- /*
- * Note that the dev_driver_list is populated here
- * from calls made to rte_eal_driver_register from constructor functions
- * embedded into PMD modules via the RTE_PMD_REGISTER_VDEV macro
- */
-
/* call the init function for each virtual device */
TAILQ_FOREACH(dev, &vdev_device_list, next) {
return 0;
}
-static struct rte_bus rte_vdev_bus = {
- .scan = vdev_scan,
- .probe = vdev_probe,
-};
+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;
-RTE_INIT(rte_vdev_bus_register);
+ 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 void rte_vdev_bus_register(void)
+static int
+vdev_unplug(struct rte_device *dev)
{
- static int registered;
+ /*
+ * The virtual bus doesn't support 'unattached' devices so this is
+ * actually equal to hotplugging removal of it.
+ */
+ return rte_vdev_uninit(dev->name);
+}
- if (registered)
- return;
+static struct rte_bus rte_vdev_bus = {
+ .scan = vdev_scan,
+ .probe = vdev_probe,
+ .find_device = vdev_find_device,
+ /* .plug = NULL, see comment on vdev_unplug */
+ .unplug = vdev_unplug,
+ .parse = vdev_parse,
+};
- registered = 1;
- rte_vdev_bus.name = RTE_STR(virtual);
- rte_bus_register(&rte_vdev_bus);
-}
+RTE_REGISTER_BUS(vdev, rte_vdev_bus);
git.droids-corp.org / dpdk.git / blobdiff