| Message ID | 20190829080000.20806-9-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 09:59:53AM +0200, Maxime Coquelin wrote: > This patch implements the vDPA .get_features() callback. > > Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> > --- > drivers/net/virtio/virtio_vdpa.c | 32 ++++++++++++++++++++++++++++++++ > 1 file changed, 32 insertions(+) > > diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c > index 07ff1e090..9e2af8313 100644 > --- a/drivers/net/virtio/virtio_vdpa.c > +++ b/drivers/net/virtio/virtio_vdpa.c > @@ -173,8 +173,40 @@ virtio_vdpa_get_queue_num(int did, uint32_t *queue_num) > return 0; > } > > +static int > +virtio_vdpa_get_features(int did, uint64_t *features) > +{ > + struct internal_list *list; > + struct virtio_vdpa_device *dev; > + > + list = find_internal_resource_by_did(did); > + if (list == NULL) { > + DRV_LOG(ERR, "Invalid device id: %d", did); > + return -1; > + } > + > + dev = list->dev; > + > + *features = VTPCI_OPS(&dev->hw)->get_features(&dev->hw); > + > + if (!(*features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) { > + DRV_LOG(ERR, "Device does not support IOMMU"); > + return -1; > + } > + > + if (*features & (1ULL << VIRTIO_NET_F_CTRL_VQ)) > + dev->has_ctrl_vq = true; > + else > + dev->has_ctrl_vq = false; > + > + *features |= (1ULL << VHOST_USER_F_PROTOCOL_FEATURES); We need to drop the VIRTIO_F_IOMMU_PLATFORM bit before reporting features to the upper layer as the vDPA backend doesn't support the vIOMMU yet. Regards, Tiwei > + > + 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, > }; > > static inline int > -- > 2.21.0 >
On 9/2/19 8:43 AM, Tiwei Bie wrote: > On Thu, Aug 29, 2019 at 09:59:53AM +0200, Maxime Coquelin wrote: >> This patch implements the vDPA .get_features() callback. >> >> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> >> --- >> drivers/net/virtio/virtio_vdpa.c | 32 ++++++++++++++++++++++++++++++++ >> 1 file changed, 32 insertions(+) >> >> diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c >> index 07ff1e090..9e2af8313 100644 >> --- a/drivers/net/virtio/virtio_vdpa.c >> +++ b/drivers/net/virtio/virtio_vdpa.c >> @@ -173,8 +173,40 @@ virtio_vdpa_get_queue_num(int did, uint32_t *queue_num) >> return 0; >> } >> >> +static int >> +virtio_vdpa_get_features(int did, uint64_t *features) >> +{ >> + struct internal_list *list; >> + struct virtio_vdpa_device *dev; >> + >> + list = find_internal_resource_by_did(did); >> + if (list == NULL) { >> + DRV_LOG(ERR, "Invalid device id: %d", did); >> + return -1; >> + } >> + >> + dev = list->dev; >> + >> + *features = VTPCI_OPS(&dev->hw)->get_features(&dev->hw); >> + >> + if (!(*features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) { >> + DRV_LOG(ERR, "Device does not support IOMMU"); >> + return -1; >> + } >> + >> + if (*features & (1ULL << VIRTIO_NET_F_CTRL_VQ)) >> + dev->has_ctrl_vq = true; >> + else >> + dev->has_ctrl_vq = false; >> + >> + *features |= (1ULL << VHOST_USER_F_PROTOCOL_FEATURES); > > We need to drop the VIRTIO_F_IOMMU_PLATFORM bit before > reporting features to the upper layer as the vDPA backend > doesn't support the vIOMMU yet. Indeed, it just work for now because Virtio-user does not advertise IOMMU feature. > Regards, > Tiwei > > >> + >> + 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, >> }; >> >> static inline int >> -- >> 2.21.0 >>
diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c index 07ff1e090..9e2af8313 100644 --- a/drivers/net/virtio/virtio_vdpa.c +++ b/drivers/net/virtio/virtio_vdpa.c @@ -173,8 +173,40 @@ virtio_vdpa_get_queue_num(int did, uint32_t *queue_num) return 0; } +static int +virtio_vdpa_get_features(int did, uint64_t *features) +{ + struct internal_list *list; + struct virtio_vdpa_device *dev; + + list = find_internal_resource_by_did(did); + if (list == NULL) { + DRV_LOG(ERR, "Invalid device id: %d", did); + return -1; + } + + dev = list->dev; + + *features = VTPCI_OPS(&dev->hw)->get_features(&dev->hw); + + if (!(*features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) { + DRV_LOG(ERR, "Device does not support IOMMU"); + return -1; + } + + if (*features & (1ULL << VIRTIO_NET_F_CTRL_VQ)) + dev->has_ctrl_vq = true; + else + dev->has_ctrl_vq = false; + + *features |= (1ULL << VHOST_USER_F_PROTOCOL_FEATURES); + + 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, }; static inline int
This patch implements the vDPA .get_features() callback. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> --- drivers/net/virtio/virtio_vdpa.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)