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vhost: generialize backend features setting/getting

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Move the backend features setting/getting from net.c to vhost.c to be
reused by vhost-vdpa.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-3-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jason Wang
2020-08-04 19:20:38 +03:00
committed by Michael S. Tsirkin
parent b0bd82bf72
commit 460f7ce19f
3 changed files with 19 additions and 16 deletions
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18
drivers/vhost/net.c
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@@ -1615,21 +1615,6 @@ done:
return err;
}
static int vhost_net_set_backend_features(struct vhost_net *n, u64 features)
{
int i;
mutex_lock(&n->dev.mutex);
for (i = 0; i < VHOST_NET_VQ_MAX; ++i) {
mutex_lock(&n->vqs[i].vq.mutex);
n->vqs[i].vq.acked_backend_features = features;
mutex_unlock(&n->vqs[i].vq.mutex);
}
mutex_unlock(&n->dev.mutex);
return 0;
}
static int vhost_net_set_features(struct vhost_net *n, u64 features)
{
size_t vhost_hlen, sock_hlen, hdr_len;
@@ -1730,7 +1715,8 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl,
return -EFAULT;
if (features & ~VHOST_NET_BACKEND_FEATURES)
return -EOPNOTSUPP;
return vhost_net_set_backend_features(n, features);
vhost_set_backend_features(&n->dev, features);
return 0;
case VHOST_RESET_OWNER:
return vhost_net_reset_owner(n);
case VHOST_SET_OWNER: