OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

vdpa: export vhost_vdpa_set_vring_ready

Browse Source 
The vhost-vdpa net backend needs to enable vrings in a different order
than default, so export it.

No functional change intended except for tracing, that now includes the
(virtio) index being enabled and the return value of the ioctl.

Still ignoring return value of this function if called from
vhost_vdpa_dev_start, as reorganize calling code around it is out of
the scope of this series.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230822085330.3978829-3-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eugenio Pérez 2023-08-22 10:53:27 +02:00 committed by Michael S. Tsirkin
parent b40eba9cdd
commit d7ce084176
3 changed files with 15 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/virtio/trace-events
View File

@ -48,7 +48,7 @@ vhost_vdpa_set_features(void *dev, uint64_t features) "dev: %p features: 0x%"PRI
vhost_vdpa_get_device_id(void *dev, uint32_t device_id) "dev: %p device_id %"PRIu32
vhost_vdpa_reset_device(void *dev) "dev: %p"
vhost_vdpa_get_vq_index(void *dev, int idx, int vq_idx) "dev: %p idx: %d vq idx: %d"
vhost_vdpa_set_vring_ready(void *dev) "dev: %p"
vhost_vdpa_set_vring_ready(void *dev, unsigned i, int r) "dev: %p, idx: %u, r: %d"
vhost_vdpa_dump_config(void *dev, const char *line) "dev: %p %s"
vhost_vdpa_set_config(void *dev, uint32_t offset, uint32_t size, uint32_t flags) "dev: %p offset: %"PRIu32" size: %"PRIu32" flags: 0x%"PRIx32
vhost_vdpa_get_config(void *dev, void *config, uint32_t config_len) "dev: %p config: %p config_len: %"PRIu32

25
hw/virtio/vhost-vdpa.c
View File

@ -882,18 +882,17 @@ static int vhost_vdpa_get_vq_index(struct vhost_dev *dev, int idx)
return idx;
}
static int vhost_vdpa_set_vring_ready(struct vhost_dev *dev)
int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx)
{
int i;
trace_vhost_vdpa_set_vring_ready(dev);
for (i = 0; i < dev->nvqs; ++i) {
struct vhost_vring_state state = {
.index = dev->vq_index + i,
.num = 1,
};
vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state);
}
return 0;
struct vhost_dev *dev = v->dev;
struct vhost_vring_state state = {
.index = idx,
.num = 1,
};
int r = vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state);
trace_vhost_vdpa_set_vring_ready(dev, idx, r);
return r;
}
static int vhost_vdpa_set_config_call(struct vhost_dev *dev,
@ -1304,7 +1303,9 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started)
if (unlikely(!ok)) {
return -1;
}
vhost_vdpa_set_vring_ready(dev);
for (int i = 0; i < dev->nvqs; ++i) {
vhost_vdpa_set_vring_ready(v, dev->vq_index + i);
}
} else {
vhost_vdpa_suspend(dev);
vhost_vdpa_svqs_stop(dev);

1
include/hw/virtio/vhost-vdpa.h
View File

@ -57,6 +57,7 @@ typedef struct vhost_vdpa {
} VhostVDPA;
int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range);
int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx);
int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova,
hwaddr size, void *vaddr, bool readonly);