[4/4] net/virtio: add DMA mapping callback to virtio-user
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Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
.../net/virtio/virtio_user/virtio_user_dev.c | 10 +---
.../net/virtio/virtio_user/virtio_user_dev.h | 3 +
drivers/net/virtio/virtio_user_ethdev.c | 58 +++++++++++++++++++
3 files changed, 63 insertions(+), 8 deletions(-)
@@ -313,21 +313,15 @@ virtio_user_fill_intr_handle(struct virtio_user_dev *dev)
return 0;
}
-static void
+void
virtio_user_mem_event_cb(enum rte_mem_event type __rte_unused,
- const void *addr,
+ const void *addr __rte_unused,
size_t len __rte_unused,
void *arg)
{
struct virtio_user_dev *dev = arg;
- struct rte_memseg_list *msl;
uint16_t i;
- /* ignore externally allocated memory */
- msl = rte_mem_virt2memseg_list(addr);
- if (msl->external)
- return;
-
pthread_mutex_lock(&dev->mutex);
if (dev->started == false)
@@ -67,4 +67,7 @@ void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx);
void virtio_user_handle_cq_packed(struct virtio_user_dev *dev,
uint16_t queue_idx);
uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs);
+void
+virtio_user_mem_event_cb(enum rte_mem_event type,
+ const void *addr, size_t len , void *arg);
#endif
@@ -385,6 +385,62 @@ const struct virtio_pci_ops virtio_user_ops = {
.notify_queue = virtio_user_notify_queue,
};
+static int
+virtio_user_dma_map(struct rte_vdev_device *vdev, void *addr,
+ uint64_t iova __rte_unused, size_t len)
+{
+ const char *name;
+ struct rte_eth_dev *eth_dev;
+ struct virtio_hw *hw;
+ struct virtio_user_dev *dev;
+
+ if (!vdev)
+ return -EINVAL;
+
+ name = rte_vdev_device_name(vdev);
+ eth_dev = rte_eth_dev_allocated(name);
+ if (!eth_dev)
+ return -ENODEV;
+
+ hw = eth_dev->data->dev_private;
+ dev = hw->virtio_user_dev;
+
+ virtio_user_mem_event_cb(RTE_MEM_EVENT_ALLOC,
+ addr,
+ len,
+ (void *)dev);
+
+ return 0;
+}
+
+static int
+virtio_user_dma_unmap(struct rte_vdev_device *vdev, void *addr,
+ uint64_t iova __rte_unused, size_t len)
+{
+ const char *name;
+ struct rte_eth_dev *eth_dev;
+ struct virtio_hw *hw;
+ struct virtio_user_dev *dev;
+
+ if (!vdev)
+ return -EINVAL;
+
+ name = rte_vdev_device_name(vdev);
+ eth_dev = rte_eth_dev_allocated(name);
+ if (!eth_dev)
+ return -ENODEV;
+
+ hw = eth_dev->data->dev_private;
+ dev = hw->virtio_user_dev;
+
+ virtio_user_mem_event_cb(RTE_MEM_EVENT_FREE,
+ addr,
+ len,
+ (void *)dev);
+
+ return 0;
+}
+
static const char *valid_args[] = {
#define VIRTIO_USER_ARG_QUEUES_NUM "queues"
VIRTIO_USER_ARG_QUEUES_NUM,
@@ -717,6 +773,8 @@ virtio_user_pmd_remove(struct rte_vdev_device *vdev)
}
static struct rte_vdev_driver virtio_user_driver = {
+ .dma_map = virtio_user_dma_map,
+ .dma_unmap = virtio_user_dma_unmap,
.probe = virtio_user_pmd_probe,
.remove = virtio_user_pmd_remove,
};