| Message ID | 20190829080000.20806-12-maxime.coquelin@redhat.com (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Maxime Coquelin |
| Headers | show |
| Series | Introduce Virtio vDPA driver | expand |
| Context | Check | Description |
|---|---|---|
| ci/checkpatch | success | coding style OK |
| ci/Intel-compilation | fail | Compilation issues |
On Thu, Aug 29, 2019 at 09:59:56AM +0200, Maxime Coquelin wrote: > This patch implements the vDPA .dev_close() callback. > > Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> > --- > drivers/net/virtio/virtio_vdpa.c | 52 ++++++++++++++++++++++++++++++++ > 1 file changed, 52 insertions(+) > > diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c > index 13b4dd07d..691844906 100644 > --- a/drivers/net/virtio/virtio_vdpa.c > +++ b/drivers/net/virtio/virtio_vdpa.c > @@ -436,6 +436,33 @@ virtio_vdpa_start(struct virtio_vdpa_device *dev) > return ret; > } > > +static void > +virtio_vdpa_stop(struct virtio_vdpa_device *dev) > +{ > + struct virtio_hw *hw = &dev->hw; > + uint32_t i, nr_vring; > + int vid = dev->vid; > + struct rte_vhost_vring vr; > + uint16_t last_used_idx, last_avail_idx; > + > + nr_vring = rte_vhost_get_vring_num(vid); > + > + vtpci_reset(hw); > + > + for (i = 0; i < nr_vring; i++) { > + rte_vhost_get_vhost_vring(vid, i, &vr); > + > + last_used_idx = vr.used->idx; > + last_avail_idx = vr.avail->idx; This only works in split ring. Regards, Tiwei > + > + rte_vhost_set_vring_base(vid, i, last_avail_idx, > + last_used_idx); > + } > + > + rte_free(dev->vqs); > + dev->vqs = NULL; > +} > +
On 9/2/19 9:07 AM, Tiwei Bie wrote: > On Thu, Aug 29, 2019 at 09:59:56AM +0200, Maxime Coquelin wrote: >> This patch implements the vDPA .dev_close() callback. >> >> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> >> --- >> drivers/net/virtio/virtio_vdpa.c | 52 ++++++++++++++++++++++++++++++++ >> 1 file changed, 52 insertions(+) >> >> diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c >> index 13b4dd07d..691844906 100644 >> --- a/drivers/net/virtio/virtio_vdpa.c >> +++ b/drivers/net/virtio/virtio_vdpa.c >> @@ -436,6 +436,33 @@ virtio_vdpa_start(struct virtio_vdpa_device *dev) >> return ret; >> } >> >> +static void >> +virtio_vdpa_stop(struct virtio_vdpa_device *dev) >> +{ >> + struct virtio_hw *hw = &dev->hw; >> + uint32_t i, nr_vring; >> + int vid = dev->vid; >> + struct rte_vhost_vring vr; >> + uint16_t last_used_idx, last_avail_idx; >> + >> + nr_vring = rte_vhost_get_vring_num(vid); >> + >> + vtpci_reset(hw); >> + >> + for (i = 0; i < nr_vring; i++) { >> + rte_vhost_get_vhost_vring(vid, i, &vr); >> + >> + last_used_idx = vr.used->idx; >> + last_avail_idx = vr.avail->idx; > > This only works in split ring. Right, thanks for spotting it. For the v2, I'll try to fix it and test it with Jason's Qemu series adding packed ring support. > Regards, > Tiwei > >> + >> + rte_vhost_set_vring_base(vid, i, last_avail_idx, >> + last_used_idx); >> + } >> + >> + rte_free(dev->vqs); >> + dev->vqs = NULL; >> +} >> +
diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c index 13b4dd07d..691844906 100644 --- a/drivers/net/virtio/virtio_vdpa.c +++ b/drivers/net/virtio/virtio_vdpa.c @@ -436,6 +436,33 @@ virtio_vdpa_start(struct virtio_vdpa_device *dev) return ret; } +static void +virtio_vdpa_stop(struct virtio_vdpa_device *dev) +{ + struct virtio_hw *hw = &dev->hw; + uint32_t i, nr_vring; + int vid = dev->vid; + struct rte_vhost_vring vr; + uint16_t last_used_idx, last_avail_idx; + + nr_vring = rte_vhost_get_vring_num(vid); + + vtpci_reset(hw); + + for (i = 0; i < nr_vring; i++) { + rte_vhost_get_vhost_vring(vid, i, &vr); + + last_used_idx = vr.used->idx; + last_avail_idx = vr.avail->idx; + + rte_vhost_set_vring_base(vid, i, last_avail_idx, + last_used_idx); + } + + rte_free(dev->vqs); + dev->vqs = NULL; +} + static int virtio_vdpa_dev_config(int vid) { @@ -470,11 +497,36 @@ virtio_vdpa_dev_config(int vid) return ret; } +static int +virtio_vdpa_dev_close(int vid) +{ + int did; + struct internal_list *list; + struct virtio_vdpa_device *dev; + + did = rte_vhost_get_vdpa_device_id(vid); + list = find_internal_resource_by_did(did); + if (list == NULL) { + DRV_LOG(ERR, "Invalid device id: %d", did); + return -1; + } + + dev = list->dev; + + rte_spinlock_lock(&dev->lock); + virtio_vdpa_stop(dev); + virtio_vdpa_dma_map(dev, 0); + rte_spinlock_unlock(&dev->lock); + + return 0; +} + static struct rte_vdpa_dev_ops virtio_vdpa_ops = { .get_queue_num = virtio_vdpa_get_queue_num, .get_features = virtio_vdpa_get_features, .get_protocol_features = virtio_vdpa_get_protocol_features, .dev_conf = virtio_vdpa_dev_config, + .dev_close = virtio_vdpa_dev_close, }; static inline int
This patch implements the vDPA .dev_close() callback. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> --- drivers/net/virtio/virtio_vdpa.c | 52 ++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)