diff options
| author | Jason Wang <jasowang@redhat.com> | 2022-09-27 09:48:08 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-10-07 15:32:40 +0200 |
| commit | 90fea5a800c3dd80fb8ad9a02929bcef5fde42b8 (patch) | |
| tree | ab3dca9a87fff91f118f5d868c7ab545a7e6d727 /drivers/vdpa/vdpa.c | |
| parent | virtio-net: use mtu size as buffer length for big packets (diff) | |
| download | linux-90fea5a800c3dd80fb8ad9a02929bcef5fde42b8.tar.xz linux-90fea5a800c3dd80fb8ad9a02929bcef5fde42b8.zip | |
vdpa: device feature provisioning
This patch allows the device features to be provisioned through
netlink. A new attribute is introduced to allow the userspace to pass
a 64bit device features during device adding.
This provides several advantages:
- Allow to provision a subset of the features to ease the cross vendor
live migration.
- Better debug-ability for vDPA framework and parent.
Reviewed-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220927074810.28627-2-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa/vdpa.c')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index c06c02704461..278e26bfa492 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -600,6 +600,11 @@ static int vdpa_nl_cmd_dev_add_set_doit(struct sk_buff *skb, struct genl_info *i } config.mask |= BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MAX_VQP); } + if (nl_attrs[VDPA_ATTR_DEV_FEATURES]) { + config.device_features = + nla_get_u64(nl_attrs[VDPA_ATTR_DEV_FEATURES]); + config.mask |= BIT_ULL(VDPA_ATTR_DEV_FEATURES); + } /* Skip checking capability if user didn't prefer to configure any * device networking attributes. It is likely that user might have used |