#include <rte_dev.h>
#include <rte_devargs.h>
#include <rte_debug.h>
-#include <rte_devargs.h>
#include <rte_log.h>
#include "eal_private.h"
int rte_eal_dev_attach(const char *name, const char *devargs)
{
- struct rte_pci_addr addr;
+ struct rte_bus *bus;
+ int ret;
if (name == NULL || devargs == NULL) {
RTE_LOG(ERR, EAL, "Invalid device or arguments provided\n");
return -EINVAL;
}
- if (eal_parse_pci_DomBDF(name, &addr) == 0) {
- if (rte_pci_probe_one(&addr) < 0)
- goto err;
-
- } else {
- if (rte_vdev_init(name, devargs))
- goto err;
+ bus = rte_bus_find_by_device_name(name);
+ if (bus == NULL) {
+ RTE_LOG(ERR, EAL, "Unable to find a bus for the device '%s'\n",
+ name);
+ return -EINVAL;
+ }
+ if (strcmp(bus->name, "pci") == 0)
+ return rte_eal_hotplug_add("pci", name, devargs);
+ if (strcmp(bus->name, "vdev") != 0) {
+ RTE_LOG(ERR, EAL, "Device attach is only supported for PCI and vdev devices.\n");
+ return -ENOTSUP;
}
- return 0;
-
-err:
- RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n", name);
- return -EINVAL;
+ /*
+ * If we haven't found a bus device the user meant to "hotplug" a
+ * virtual device instead.
+ */
+ ret = rte_vdev_init(name, devargs);
+ if (ret)
+ RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n",
+ name);
+ return ret;
}
int rte_eal_dev_detach(struct rte_device *dev)
return ret;
}
+static char *
+full_dev_name(const char *bus, const char *dev, const char *args)
+{
+ char *name;
+ size_t len;
+
+ len = snprintf(NULL, 0, "%s:%s,%s", bus, dev, args);
+ name = calloc(1, len);
+ if (name == NULL) {
+ RTE_LOG(ERR, EAL, "Could not allocate full device name\n");
+ return NULL;
+ }
+ snprintf(name, len, "%s:%s,%s", bus, dev, args);
+ return name;
+}
+
int rte_eal_hotplug_add(const char *busname, const char *devname,
const char *devargs)
{
struct rte_bus *bus;
struct rte_device *dev;
+ struct rte_devargs *da;
+ char *name;
int ret;
bus = rte_bus_find_by_name(busname);
return -ENOTSUP;
}
+ name = full_dev_name(busname, devname, devargs);
+ if (name == NULL)
+ return -ENOMEM;
+
+ da = calloc(1, sizeof(*da));
+ if (da == NULL) {
+ ret = -ENOMEM;
+ goto err_name;
+ }
+
+ ret = rte_eal_devargs_parse(name, da);
+ if (ret)
+ goto err_devarg;
+
+ ret = rte_eal_devargs_insert(da);
+ if (ret)
+ goto err_devarg;
+
ret = bus->scan();
if (ret)
- return ret;
+ goto err_devarg;
dev = bus->find_device(NULL, cmp_detached_dev_name, devname);
if (dev == NULL) {
RTE_LOG(ERR, EAL, "Cannot find unplugged device (%s)\n",
devname);
- return -EINVAL;
+ ret = -ENODEV;
+ goto err_devarg;
}
- ret = bus->plug(dev, devargs);
- if (ret)
+ ret = bus->plug(dev);
+ if (ret) {
RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n",
dev->name);
+ goto err_devarg;
+ }
+ free(name);
+ return 0;
+
+err_devarg:
+ if (rte_eal_devargs_remove(busname, devname)) {
+ free(da->args);
+ free(da);
+ }
+err_name:
+ free(name);
return ret;
}
if (ret)
RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",
dev->name);
+ rte_eal_devargs_remove(busname, devname);
return ret;
}