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vdev: move virtual device probing into a bus

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This is a refactoring of the virtual device probing which moves into into
a proper bus structure.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
This commit is contained in:
Jan Blunck 2017-04-11 17:44:06 +02:00 committed by Thomas Monjalon
parent da76cc0234
commit 810e5fa368
2 changed files with 62 additions and 24 deletions
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25
lib/librte_eal/common/eal_common_dev.c
View File

@ -79,30 +79,7 @@ void rte_eal_device_remove(struct rte_device *dev)
int
rte_eal_dev_init(void)
{
struct rte_devargs *devargs;
int ret = 0;
/*
* 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(devargs, &devargs_list, next) {
if (devargs->type != RTE_DEVTYPE_VIRTUAL)
continue;
if (rte_eal_vdev_init(devargs->virt.drv_name,
devargs->args)) {
RTE_LOG(ERR, EAL, "failed to initialize %s device\n",
devargs->virt.drv_name);
ret = -1;
}
}
return ret;
return 0;
}
int rte_eal_dev_attach(const char *name, const char *devargs)

61
lib/librte_eal/common/eal_common_vdev.c
View File

@ -37,16 +37,23 @@
#include <stdint.h>
#include <sys/queue.h>
#include <rte_eal.h>
#include <rte_bus.h>
#include <rte_vdev.h>
#include <rte_common.h>
#include <rte_devargs.h>
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_bus_register();
TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
rte_eal_driver_register(&driver->driver);
}
@ -122,3 +129,57 @@ rte_eal_vdev_uninit(const char *name)
RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
return -EINVAL;
}
static int
vdev_scan(void)
{
/* for virtual devices we don't need to scan anything */
return 0;
}
static int
vdev_probe(void)
{
struct rte_devargs *devargs;
/*
* 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(devargs, &devargs_list, next) {
if (devargs->type != RTE_DEVTYPE_VIRTUAL)
continue;
if (rte_eal_vdev_init(devargs->virt.drv_name,
devargs->args)) {
RTE_LOG(ERR, EAL, "failed to initialize %s device\n",
devargs->virt.drv_name);
return -1;
}
}
return 0;
}
static struct rte_bus rte_vdev_bus = {
.scan = vdev_scan,
.probe = vdev_probe,
};
RTE_INIT(rte_vdev_bus_register);
static void rte_vdev_bus_register(void)
{
static int registered;
if (registered)
return;
registered = 1;
rte_vdev_bus.name = RTE_STR(virtual);
rte_bus_register(&rte_vdev_bus);
}