bus/vdev: implement parse bus operation

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
index b3570f9..2250b8f 100644 (file)
--- a/lib/librte_eal/common/eal_common_vdev.c
+++ b/lib/librte_eal/common/eal_common_vdev.c
@@ -101,6 +101,27 @@ static char *parse_driver_arg(const char *args)
        return str;
 }
 
+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)
 {
@@ -115,36 +136,14 @@ vdev_probe_all_drivers(struct rte_vdev_device *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;
-               }
+       if (vdev_parse(name, &driver)) {
+               ret = -1;
+               goto out;
        }
-
+       dev->device.driver = &driver->driver;
+       ret = driver->probe(dev);
+       if (ret)
+               dev->device.driver = NULL;
 out:
        free(drv_name);
        return ret;
@@ -370,6 +369,7 @@ static struct rte_bus rte_vdev_bus = {
        .find_device = vdev_find_device,
        /* .plug = NULL, see comment on vdev_unplug */
        .unplug = vdev_unplug,
+       .parse = vdev_parse,
 };
 
 RTE_REGISTER_BUS(vdev, rte_vdev_bus);