diff options
| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2021-03-17 17:49:32 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-05-03 04:55:52 -0400 |
| commit | 1d895a68085b28d098893570b024229aacc9a057 (patch) | |
| tree | 3e580359a4e47ca90a94a010967d30ad03bb3fbc /drivers/vdpa/ifcvf/ifcvf_base.c | |
| parent | 69d00d9858c7451a1e3fc556ece211533fb85b64 (diff) | |
vDPA/ifcvf: verify mandatory feature bits for vDPA
vDPA requres VIRTIO_F_ACCESS_PLATFORM as a must, this commit
examines this when set features.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210317094933.16417-7-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa/ifcvf/ifcvf_base.c')
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_base.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c index ea6a78791c9b..1a661ab45af5 100644 --- a/drivers/vdpa/ifcvf/ifcvf_base.c +++ b/drivers/vdpa/ifcvf/ifcvf_base.c @@ -224,6 +224,18 @@ u64 ifcvf_get_features(struct ifcvf_hw *hw) return hw->hw_features; } +int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features) +{ + struct ifcvf_adapter *ifcvf = vf_to_adapter(hw); + + if (!(features & BIT_ULL(VIRTIO_F_ACCESS_PLATFORM)) && features) { + IFCVF_ERR(ifcvf->pdev, "VIRTIO_F_ACCESS_PLATFORM is not negotiated\n"); + return -EINVAL; + } + + return 0; +} + void ifcvf_read_net_config(struct ifcvf_hw *hw, u64 offset, void *dst, int length) { |