*/
#include <stdbool.h>
+#include <sys/queue.h>
+#include <rte_class.h>
#include <rte_malloc.h>
+#include <rte_spinlock.h>
+#include <rte_tailq.h>
+
#include "rte_vdpa.h"
#include "vhost.h"
-static struct rte_vdpa_device *vdpa_devices[MAX_VHOST_DEVICE];
-static uint32_t vdpa_device_num;
+/** Double linked list of vDPA devices. */
+TAILQ_HEAD(vdpa_device_list, rte_vdpa_device);
-static bool
-is_same_vdpa_device(struct rte_vdpa_dev_addr *a,
- struct rte_vdpa_dev_addr *b)
-{
- bool ret = true;
-
- if (a->type != b->type)
- return false;
-
- switch (a->type) {
- case PCI_ADDR:
- if (a->pci_addr.domain != b->pci_addr.domain ||
- a->pci_addr.bus != b->pci_addr.bus ||
- a->pci_addr.devid != b->pci_addr.devid ||
- a->pci_addr.function != b->pci_addr.function)
- ret = false;
- break;
- default:
- break;
- }
+static struct vdpa_device_list vdpa_device_list =
+ TAILQ_HEAD_INITIALIZER(vdpa_device_list);
+static rte_spinlock_t vdpa_device_list_lock = RTE_SPINLOCK_INITIALIZER;
- return ret;
-}
-int
-rte_vdpa_register_device(struct rte_vdpa_dev_addr *addr,
- struct rte_vdpa_dev_ops *ops)
+/* Unsafe, needs to be called with vdpa_device_list_lock held */
+static struct rte_vdpa_device *
+__vdpa_find_device_by_name(const char *name)
{
- struct rte_vdpa_device *dev;
- char device_name[MAX_VDPA_NAME_LEN];
- int i;
+ struct rte_vdpa_device *dev, *ret = NULL;
- if (vdpa_device_num >= MAX_VHOST_DEVICE || addr == NULL || ops == NULL)
- return -1;
-
- for (i = 0; i < MAX_VHOST_DEVICE; i++) {
- dev = vdpa_devices[i];
- if (dev && is_same_vdpa_device(&dev->addr, addr))
- return -1;
- }
+ if (name == NULL)
+ return NULL;
- for (i = 0; i < MAX_VHOST_DEVICE; i++) {
- if (vdpa_devices[i] == NULL)
+ TAILQ_FOREACH(dev, &vdpa_device_list, next) {
+ if (!strncmp(dev->device->name, name, RTE_DEV_NAME_MAX_LEN)) {
+ ret = dev;
break;
+ }
}
- if (i == MAX_VHOST_DEVICE)
- return -1;
+ return ret;
+}
- snprintf(device_name, sizeof(device_name), "vdpa-dev-%d", i);
- dev = rte_zmalloc(device_name, sizeof(struct rte_vdpa_device),
- RTE_CACHE_LINE_SIZE);
- if (!dev)
- return -1;
+struct rte_vdpa_device *
+rte_vdpa_find_device_by_name(const char *name)
+{
+ struct rte_vdpa_device *dev;
- memcpy(&dev->addr, addr, sizeof(struct rte_vdpa_dev_addr));
- dev->ops = ops;
- vdpa_devices[i] = dev;
- vdpa_device_num++;
+ rte_spinlock_lock(&vdpa_device_list_lock);
+ dev = __vdpa_find_device_by_name(name);
+ rte_spinlock_unlock(&vdpa_device_list_lock);
- return i;
+ return dev;
}
-int
-rte_vdpa_unregister_device(int did)
+struct rte_device *
+rte_vdpa_get_rte_device(struct rte_vdpa_device *vdpa_dev)
{
- if (did < 0 || did >= MAX_VHOST_DEVICE || vdpa_devices[did] == NULL)
- return -1;
-
- rte_free(vdpa_devices[did]);
- vdpa_devices[did] = NULL;
- vdpa_device_num--;
+ if (vdpa_dev == NULL)
+ return NULL;
- return did;
+ return vdpa_dev->device;
}
-int
-rte_vdpa_find_device_id(struct rte_vdpa_dev_addr *addr)
+struct rte_vdpa_device *
+rte_vdpa_register_device(struct rte_device *rte_dev,
+ struct rte_vdpa_dev_ops *ops)
{
struct rte_vdpa_device *dev;
- int i;
- if (addr == NULL)
- return -1;
+ if (ops == NULL)
+ return NULL;
- for (i = 0; i < MAX_VHOST_DEVICE; ++i) {
- dev = vdpa_devices[i];
- if (dev && is_same_vdpa_device(&dev->addr, addr))
- return i;
+ rte_spinlock_lock(&vdpa_device_list_lock);
+ /* Check the device hasn't been register already */
+ dev = __vdpa_find_device_by_name(rte_dev->name);
+ if (dev) {
+ dev = NULL;
+ goto out_unlock;
}
- return -1;
-}
+ dev = rte_zmalloc(NULL, sizeof(*dev), 0);
+ if (!dev)
+ goto out_unlock;
-struct rte_vdpa_device *
-rte_vdpa_get_device(int did)
-{
- if (did < 0 || did >= MAX_VHOST_DEVICE)
- return NULL;
+ dev->device = rte_dev;
+ dev->ops = ops;
+ TAILQ_INSERT_TAIL(&vdpa_device_list, dev, next);
+out_unlock:
+ rte_spinlock_unlock(&vdpa_device_list_lock);
- return vdpa_devices[did];
+ return dev;
}
int
-rte_vdpa_get_device_num(void)
+rte_vdpa_unregister_device(struct rte_vdpa_device *dev)
{
- return vdpa_device_num;
+ struct rte_vdpa_device *cur_dev, *tmp_dev;
+ int ret = -1;
+
+ rte_spinlock_lock(&vdpa_device_list_lock);
+ TAILQ_FOREACH_SAFE(cur_dev, &vdpa_device_list, next, tmp_dev) {
+ if (dev != cur_dev)
+ continue;
+
+ TAILQ_REMOVE(&vdpa_device_list, dev, next);
+ rte_free(dev);
+ ret = 0;
+ break;
+ }
+ rte_spinlock_unlock(&vdpa_device_list_lock);
+
+ return ret;
}
int
free_ind_table(idesc);
return -1;
}
+
+int
+rte_vdpa_get_queue_num(struct rte_vdpa_device *dev, uint32_t *queue_num)
+{
+ if (dev == NULL || dev->ops == NULL || dev->ops->get_queue_num == NULL)
+ return -1;
+
+ return dev->ops->get_queue_num(dev, queue_num);
+}
+
+int
+rte_vdpa_get_features(struct rte_vdpa_device *dev, uint64_t *features)
+{
+ if (dev == NULL || dev->ops == NULL || dev->ops->get_features == NULL)
+ return -1;
+
+ return dev->ops->get_features(dev, features);
+}
+
+int
+rte_vdpa_get_protocol_features(struct rte_vdpa_device *dev, uint64_t *features)
+{
+ if (dev == NULL || dev->ops == NULL ||
+ dev->ops->get_protocol_features == NULL)
+ return -1;
+
+ return dev->ops->get_protocol_features(dev, features);
+}
+
+int
+rte_vdpa_get_stats_names(struct rte_vdpa_device *dev,
+ struct rte_vdpa_stat_name *stats_names,
+ unsigned int size)
+{
+ if (!dev)
+ return -EINVAL;
+
+ RTE_FUNC_PTR_OR_ERR_RET(dev->ops->get_stats_names, -ENOTSUP);
+
+ return dev->ops->get_stats_names(dev, stats_names, size);
+}
+
+int
+rte_vdpa_get_stats(struct rte_vdpa_device *dev, uint16_t qid,
+ struct rte_vdpa_stat *stats, unsigned int n)
+{
+ if (!dev || !stats || !n)
+ return -EINVAL;
+
+ RTE_FUNC_PTR_OR_ERR_RET(dev->ops->get_stats, -ENOTSUP);
+
+ return dev->ops->get_stats(dev, qid, stats, n);
+}
+
+int
+rte_vdpa_reset_stats(struct rte_vdpa_device *dev, uint16_t qid)
+{
+ if (!dev)
+ return -EINVAL;
+
+ RTE_FUNC_PTR_OR_ERR_RET(dev->ops->reset_stats, -ENOTSUP);
+
+ return dev->ops->reset_stats(dev, qid);
+}
+
+static int
+vdpa_dev_match(struct rte_vdpa_device *dev,
+ const struct rte_device *rte_dev)
+{
+ if (dev->device == rte_dev)
+ return 0;
+
+ return -1;
+}
+
+/* Generic rte_vdpa_dev comparison function. */
+typedef int (*rte_vdpa_cmp_t)(struct rte_vdpa_device *,
+ const struct rte_device *rte_dev);
+
+static struct rte_vdpa_device *
+vdpa_find_device(const struct rte_vdpa_device *start, rte_vdpa_cmp_t cmp,
+ struct rte_device *rte_dev)
+{
+ struct rte_vdpa_device *dev;
+
+ rte_spinlock_lock(&vdpa_device_list_lock);
+ if (start == NULL)
+ dev = TAILQ_FIRST(&vdpa_device_list);
+ else
+ dev = TAILQ_NEXT(start, next);
+
+ while (dev != NULL) {
+ if (cmp(dev, rte_dev) == 0)
+ break;
+
+ dev = TAILQ_NEXT(dev, next);
+ }
+ rte_spinlock_unlock(&vdpa_device_list_lock);
+
+ return dev;
+}
+
+static void *
+vdpa_dev_iterate(const void *start,
+ const char *str,
+ const struct rte_dev_iterator *it)
+{
+ struct rte_vdpa_device *vdpa_dev = NULL;
+
+ RTE_SET_USED(str);
+
+ vdpa_dev = vdpa_find_device(start, vdpa_dev_match, it->device);
+
+ return vdpa_dev;
+}
+
+static struct rte_class rte_class_vdpa = {
+ .dev_iterate = vdpa_dev_iterate,
+};
+
+RTE_REGISTER_CLASS(vdpa, rte_class_vdpa);
git.droids-corp.org / dpdk.git / blobdiff