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authorJason Wang <jasowang@redhat.com>2020-03-26 22:01:18 +0800
committerMichael S. Tsirkin <mst@redhat.com>2020-04-01 12:06:26 -0400
commit792a4f2ed24fcdf0a1956e84fe2a71ada318ba7c (patch)
tree2e6c428495030f0118f14468fc2cdf7f6e649b29 /drivers/vhost/vhost.h
parent20c384f1ea1a0bc7320bc445c72dd02d2970d594 (diff)
downloadlinux-792a4f2ed24fcdf0a1956e84fe2a71ada318ba7c.tar.bz2
vhost: allow per device message handler
This patch allow device to register its own message handler during vhost_dev_init(). vDPA device will use it to implement its own DMA mapping logic. Signed-off-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200326140125.19794-3-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.h')
-rw-r--r--drivers/vhost/vhost.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index a123fd70847e..f9d1a03dd153 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -174,11 +174,15 @@ struct vhost_dev {
int weight;
int byte_weight;
u64 kcov_handle;
+ int (*msg_handler)(struct vhost_dev *dev,
+ struct vhost_iotlb_msg *msg);
};
bool vhost_exceeds_weight(struct vhost_virtqueue *vq, int pkts, int total_len);
void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs,
- int nvqs, int iov_limit, int weight, int byte_weight);
+ int nvqs, int iov_limit, int weight, int byte_weight,
+ int (*msg_handler)(struct vhost_dev *dev,
+ struct vhost_iotlb_msg *msg));
long vhost_dev_set_owner(struct vhost_dev *dev);
bool vhost_dev_has_owner(struct vhost_dev *dev);
long vhost_dev_check_owner(struct vhost_dev *);