#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);
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_vdev_register(struct rte_vdev_driver *driver)
{
- rte_vdev_bus_register();
-
TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
}
TAILQ_REMOVE(&vdev_driver_list, driver, next);
}
-/*
- * Parse "driver" devargs without adding a dependency on rte_kvargs.h
- */
-static char *parse_driver_arg(const char *args)
+static int
+vdev_parse(const char *name, void *addr)
{
- const char *c;
- char *str;
-
- if (!args || args[0] == '\0')
- return NULL;
+ struct rte_vdev_driver **out = addr;
+ struct rte_vdev_driver *driver = NULL;
- c = args;
-
- do {
- if (strncmp(c, "driver=", 7) == 0) {
- c += 7;
+ TAILQ_FOREACH(driver, &vdev_driver_list, next) {
+ if (strncmp(driver->driver.name, name,
+ strlen(driver->driver.name)) == 0)
break;
- }
-
- c = strchr(c, ',');
- if (c)
- c++;
- } while (c);
-
- if (c)
- str = strdup(c);
- else
- str = NULL;
-
- return str;
+ 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;
- char *drv_name;
struct rte_vdev_driver *driver;
- int ret = 1;
+ int ret;
- drv_name = parse_driver_arg(rte_vdev_device_args(dev));
- name = drv_name ? drv_name : rte_vdev_device_name(dev);
+ name = rte_vdev_device_name(dev);
RTE_LOG(DEBUG, EAL, "Search driver %s to probe device %s\n", name,
rte_vdev_device_name(dev));
- 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;
- goto out;
- }
- }
-
- /* 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;
- break;
- }
- }
-
-out:
- free(drv_name);
+ if (vdev_parse(name, &driver))
+ return -1;
+ dev->device.driver = &driver->driver;
+ ret = driver->probe(dev);
+ if (ret)
+ dev->device.driver = NULL;
return ret;
}
if (!devargs)
return NULL;
- devargs->type = RTE_DEVTYPE_VIRTUAL;
+ devargs->bus = &rte_vdev_bus;
if (args)
devargs->args = strdup(args);
+ else
+ devargs->args = strdup("");
- 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;
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) {
struct rte_devargs *devargs;
/* for virtual devices we scan the devargs_list populated via cmdline */
-
TAILQ_FOREACH(devargs, &devargs_list, next) {
- if (devargs->type != RTE_DEVTYPE_VIRTUAL)
+ if (devargs->bus != &rte_vdev_bus)
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;
TAILQ_INSERT_TAIL(&vdev_device_list, dev, 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_plug(struct rte_device *dev)
{
- static int registered;
-
- if (registered)
- return;
+ return vdev_probe_all_drivers(RTE_DEV_TO_VDEV(dev));
+}
- registered = 1;
- rte_vdev_bus.name = RTE_STR(virtual);
- rte_bus_register(&rte_vdev_bus);
+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);
Code Review / deb_dpdk.git / blobdiff