On Thu, Sep 22, 2022 at 05:13:59AM +0000, Eli Cohen wrote: > > From: Jason Wang <[email protected]> > > Sent: Thursday, 22 September 2022 5:43 > > To: [email protected]; [email protected] > > Cc: Eli Cohen <[email protected]>; [email protected]; Parav Pandit > > <[email protected]>; [email protected]; > > [email protected]; [email protected]; > > [email protected]; [email protected]; [email protected]; > > [email protected]; [email protected] > > Subject: [PATCH V2 2/3] vdpa_sim_net: support feature provisioning > > > > This patch implements features provisioning for vdpa_sim_net. > > > > 1) validating the provisioned features to be a subset of the parent > > features. > > 2) clearing the features that is not wanted by the userspace > > > > For example: > > > > # vdpa mgmtdev show > > vdpasim_net: > > supported_classes net > > max_supported_vqs 3 > > dev_features MTU MAC CTRL_VQ CTRL_MAC_ADDR ANY_LAYOUT > > VERSION_1 ACCESS_PLATFORM > > > > 1) provision vDPA device with all features that are supported by the > > net simulator > > > > # vdpa dev add name dev1 mgmtdev vdpasim_net > > # vdpa dev config show > > dev1: mac 00:00:00:00:00:00 link up link_announce false mtu 1500 > > negotiated_features MTU MAC CTRL_VQ CTRL_MAC_ADDR VERSION_1 > > ACCESS_PLATFORM > > > > 2) provision vDPA device with a subset of the features > > > > # vdpa dev add name dev1 mgmtdev vdpasim_net device_features > > 0x300020000 > > How about "features_mask" instead of "device_features"? Could avoid confusion.
Not sure I agree. features_mask to me would mean it is & with features. Not the case here. > > # vdpa dev config show > > dev1: mac 00:00:00:00:00:00 link up link_announce false mtu 1500 > > negotiated_features CTRL_VQ VERSION_1 ACCESS_PLATFORM > > > > Reviewed-by: Eli Cohen <[email protected]> > > Signed-off-by: Jason Wang <[email protected]> > > --- > > drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 11 ++++++++++- > > 1 file changed, 10 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c > > b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c > > index 886449e88502..a9ba02be378b 100644 > > --- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c > > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c > > @@ -254,6 +254,14 @@ static int vdpasim_net_dev_add(struct > > vdpa_mgmt_dev *mdev, const char *name, > > dev_attr.work_fn = vdpasim_net_work; > > dev_attr.buffer_size = PAGE_SIZE; > > > > + if (config->mask & BIT_ULL(VDPA_ATTR_DEV_FEATURES)) { > > + if (config->device_features & > > + ~dev_attr.supported_features) > > + return -EINVAL; > > + dev_attr.supported_features &= > > + config->device_features; > > + } > > + > > simdev = vdpasim_create(&dev_attr); > > if (IS_ERR(simdev)) > > return PTR_ERR(simdev); > > @@ -294,7 +302,8 @@ static struct vdpa_mgmt_dev mgmt_dev = { > > .id_table = id_table, > > .ops = &vdpasim_net_mgmtdev_ops, > > .config_attr_mask = (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR | > > - 1 << VDPA_ATTR_DEV_NET_CFG_MTU), > > + 1 << VDPA_ATTR_DEV_NET_CFG_MTU | > > + 1 << VDPA_ATTR_DEV_FEATURES), > > .max_supported_vqs = VDPASIM_NET_VQ_NUM, > > .supported_features = VDPASIM_NET_FEATURES, > > }; > > -- > > 2.25.1 > _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
