diff options
| author |   Luca Boccassi <luca.boccassi@gmail.com> | 2018-04-23 14:49:51 +0100 |
|---|---|---|
| committer | Luca Boccassi <luca.boccassi@gmail.com> | 2018-04-23 14:49:55 +0100 |
| commit | 38b32e29d8d1f414f0f1d913720e8d13961cb307 (patch) | |
| tree | f6ce6ec06ceb9652b752902fdf5b6c8aafd2a990 /lib/librte_vhost/vhost.c | |
| parent | 3a03658c8707af2ec77e70c0602442dbde26a8e5 (diff) | |
| parent | 9f3a8cb4cfe59ea63e267f69700fb0fde13d7dd3 (diff) | |
Merge branch 'upstream-18.02-stable' into 18.02.x
Change-Id: I24611dda504db6f91820cff92593820e1d3db08f
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'lib/librte_vhost/vhost.c')
| -rw-r--r-- | lib/librte_vhost/vhost.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c index a407067e..8f5104a3 100644 --- a/lib/librte_vhost/vhost.c +++ b/lib/librte_vhost/vhost.c @@ -29,17 +29,17 @@ struct virtio_net *vhost_devices[MAX_VHOST_DEVICE]; /* Called with iotlb_lock read-locked */ uint64_t __vhost_iova_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq, - uint64_t iova, uint64_t size, uint8_t perm) + uint64_t iova, uint64_t *size, uint8_t perm) { uint64_t vva, tmp_size; - if (unlikely(!size)) + if (unlikely(!*size)) return 0; - tmp_size = size; + tmp_size = *size; vva = vhost_user_iotlb_cache_find(vq, iova, &tmp_size, perm); - if (tmp_size == size) + if (tmp_size == *size) return vva; iova += tmp_size; @@ -131,32 +131,39 @@ free_device(struct virtio_net *dev) int vring_translate(struct virtio_net *dev, struct vhost_virtqueue *vq) { - uint64_t size; + uint64_t req_size, size; if (!(dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) goto out; - size = sizeof(struct vring_desc) * vq->size; + req_size = sizeof(struct vring_desc) * vq->size; + size = req_size; vq->desc = (struct vring_desc *)(uintptr_t)vhost_iova_to_vva(dev, vq, vq->ring_addrs.desc_user_addr, - size, VHOST_ACCESS_RW); - if (!vq->desc) + &size, VHOST_ACCESS_RW); + if (!vq->desc || size != req_size) return -1; - size = sizeof(struct vring_avail); - size += sizeof(uint16_t) * vq->size; + req_size = sizeof(struct vring_avail); + req_size += sizeof(uint16_t) * vq->size; + if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX)) + req_size += sizeof(uint16_t); + size = req_size; vq->avail = (struct vring_avail *)(uintptr_t)vhost_iova_to_vva(dev, vq, vq->ring_addrs.avail_user_addr, - size, VHOST_ACCESS_RW); - if (!vq->avail) + &size, VHOST_ACCESS_RW); + if (!vq->avail || size != req_size) return -1; - size = sizeof(struct vring_used); - size += sizeof(struct vring_used_elem) * vq->size; + req_size = sizeof(struct vring_used); + req_size += sizeof(struct vring_used_elem) * vq->size; + if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX)) + req_size += sizeof(uint16_t); + size = req_size; vq->used = (struct vring_used *)(uintptr_t)vhost_iova_to_vva(dev, vq, vq->ring_addrs.used_user_addr, - size, VHOST_ACCESS_RW); - if (!vq->used) + &size, VHOST_ACCESS_RW); + if (!vq->used || size != req_size) return -1; out: |