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38 #include <sys/queue.h>
41 #include <rte_devargs.h>
42 #include <rte_debug.h>
43 #include <rte_devargs.h>
46 #include "eal_private.h"
48 /** Global list of device drivers. */
49 static struct rte_driver_list dev_driver_list =
50 TAILQ_HEAD_INITIALIZER(dev_driver_list);
52 /* register a driver */
54 rte_eal_driver_register(struct rte_driver *driver)
56 TAILQ_INSERT_TAIL(&dev_driver_list, driver, next);
59 /* unregister a driver */
61 rte_eal_driver_unregister(struct rte_driver *driver)
63 TAILQ_REMOVE(&dev_driver_list, driver, next);
67 rte_eal_vdev_init(const char *name, const char *args)
69 struct rte_driver *driver;
74 TAILQ_FOREACH(driver, &dev_driver_list, next) {
75 if (driver->type != PMD_VDEV)
79 * search a driver prefix in virtual device name.
80 * For example, if the driver is pcap PMD, driver->name
81 * will be "eth_pcap", but "name" will be "eth_pcapN".
82 * So use strncmp to compare.
84 if (!strncmp(driver->name, name, strlen(driver->name)))
85 return driver->init(name, args);
88 RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
93 rte_eal_dev_init(void)
95 struct rte_devargs *devargs;
96 struct rte_driver *driver;
99 * Note that the dev_driver_list is populated here
100 * from calls made to rte_eal_driver_register from constructor functions
101 * embedded into PMD modules via the PMD_REGISTER_DRIVER macro
104 /* call the init function for each virtual device */
105 TAILQ_FOREACH(devargs, &devargs_list, next) {
107 if (devargs->type != RTE_DEVTYPE_VIRTUAL)
110 if (rte_eal_vdev_init(devargs->virt.drv_name,
112 RTE_LOG(ERR, EAL, "failed to initialize %s device\n",
113 devargs->virt.drv_name);
118 /* Once the vdevs are initalized, start calling all the pdev drivers */
119 TAILQ_FOREACH(driver, &dev_driver_list, next) {
120 if (driver->type != PMD_PDEV)
122 /* PDEV drivers don't get passed any parameters */
123 driver->init(NULL, NULL);
129 rte_eal_vdev_uninit(const char *name)
131 struct rte_driver *driver;
136 TAILQ_FOREACH(driver, &dev_driver_list, next) {
137 if (driver->type != PMD_VDEV)
141 * search a driver prefix in virtual device name.
142 * For example, if the driver is pcap PMD, driver->name
143 * will be "eth_pcap", but "name" will be "eth_pcapN".
144 * So use strncmp to compare.
146 if (!strncmp(driver->name, name, strlen(driver->name)))
147 return driver->uninit(name);
150 RTE_LOG(ERR, EAL, "no driver found for %s\n", name);