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38 #include <sys/queue.h>
42 #include <rte_devargs.h>
43 #include <rte_debug.h>
44 #include <rte_devargs.h>
47 #include "eal_private.h"
49 static int cmp_detached_dev_name(const struct rte_device *dev,
52 const char *name = _name;
54 /* skip attached devices */
55 if (dev->driver != NULL)
58 return strcmp(dev->name, name);
61 static int cmp_dev_name(const struct rte_device *dev, const void *_name)
63 const char *name = _name;
65 return strcmp(dev->name, name);
68 int rte_eal_dev_attach(const char *name, const char *devargs)
72 if (name == NULL || devargs == NULL) {
73 RTE_LOG(ERR, EAL, "Invalid device or arguments provided\n");
77 ret = rte_eal_hotplug_add("pci", name, devargs);
78 if (ret && ret != -EINVAL)
82 * If we haven't found a bus device the user meant to "hotplug" a
83 * virtual device instead.
85 ret = rte_vdev_init(name, devargs);
87 RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n",
92 int rte_eal_dev_detach(struct rte_device *dev)
98 RTE_LOG(ERR, EAL, "Invalid device provided.\n");
102 bus = rte_bus_find_by_device(dev);
104 RTE_LOG(ERR, EAL, "Cannot find bus for device (%s)\n",
109 if (bus->unplug == NULL) {
110 RTE_LOG(ERR, EAL, "Bus function not supported\n");
114 ret = bus->unplug(dev);
116 RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",
121 int rte_eal_hotplug_add(const char *busname, const char *devname,
125 struct rte_device *dev;
128 bus = rte_bus_find_by_name(busname);
130 RTE_LOG(ERR, EAL, "Cannot find bus (%s)\n", busname);
134 if (bus->plug == NULL) {
135 RTE_LOG(ERR, EAL, "Function plug not supported by bus (%s)\n",
144 dev = bus->find_device(NULL, cmp_detached_dev_name, devname);
146 RTE_LOG(ERR, EAL, "Cannot find unplugged device (%s)\n",
151 ret = bus->plug(dev, devargs);
153 RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n",
158 int rte_eal_hotplug_remove(const char *busname, const char *devname)
161 struct rte_device *dev;
164 bus = rte_bus_find_by_name(busname);
166 RTE_LOG(ERR, EAL, "Cannot find bus (%s)\n", busname);
170 if (bus->unplug == NULL) {
171 RTE_LOG(ERR, EAL, "Function unplug not supported by bus (%s)\n",
176 dev = bus->find_device(NULL, cmp_dev_name, devname);
178 RTE_LOG(ERR, EAL, "Cannot find plugged device (%s)\n", devname);
182 ret = bus->unplug(dev);
184 RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",