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[RFC PATCH for 8.1 3/6] vdpa: add vhost_vdpa_set_dev_features_fd
From: |
Eugenio Pérez |
Subject: |
[RFC PATCH for 8.1 3/6] vdpa: add vhost_vdpa_set_dev_features_fd |
Date: |
Fri, 17 Mar 2023 15:55:39 +0100 |
This allows to set the features of a vhost-vdpa device from external
subsystems like vhost-net. It is used in subsequent patches to
negotiate features and probe for CVQ ASID isolation.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
include/hw/virtio/vhost-vdpa.h | 1 +
hw/virtio/vhost-vdpa.c | 20 +++++++++++++-------
2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
index 28de7da91e..a9cb6f3a32 100644
--- a/include/hw/virtio/vhost-vdpa.h
+++ b/include/hw/virtio/vhost-vdpa.h
@@ -55,6 +55,7 @@ typedef struct vhost_vdpa {
} VhostVDPA;
void vhost_vdpa_reset_status_fd(int fd);
+int vhost_vdpa_set_dev_features_fd(int fd, uint64_t features);
int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range
*iova_range);
int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova,
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 7a2053b8d9..acd5be46a9 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -651,11 +651,22 @@ static int vhost_vdpa_set_mem_table(struct vhost_dev *dev,
return 0;
}
+int vhost_vdpa_set_dev_features_fd(int fd, uint64_t features)
+{
+ int ret;
+
+ ret = vhost_vdpa_call_fd(fd, VHOST_SET_FEATURES, &features);
+ if (ret) {
+ return ret;
+ }
+
+ return vhost_vdpa_add_status_fd(fd, VIRTIO_CONFIG_S_FEATURES_OK);
+}
+
static int vhost_vdpa_set_features(struct vhost_dev *dev,
uint64_t features)
{
struct vhost_vdpa *v = dev->opaque;
- int ret;
if (!vhost_vdpa_first_dev(dev)) {
return 0;
@@ -678,12 +689,7 @@ static int vhost_vdpa_set_features(struct vhost_dev *dev,
}
trace_vhost_vdpa_set_features(dev, features);
- ret = vhost_vdpa_call(dev, VHOST_SET_FEATURES, &features);
- if (ret) {
- return ret;
- }
-
- return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK);
+ return vhost_vdpa_set_dev_features_fd(vhost_vdpa_dev_fd(dev), features);
}
static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev)
--
2.31.1
[RFC PATCH for 8.1 3/6] vdpa: add vhost_vdpa_set_dev_features_fd,
Eugenio Pérez <=
[RFC PATCH for 8.1 6/6] vdpa: Cache cvq group in VhostVDPAState, Eugenio Pérez, 2023/03/17
[RFC PATCH for 8.1 5/6] vdpa: move CVQ isolation check to net_init_vhost_vdpa, Eugenio Pérez, 2023/03/17