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authorZhu Lingshan <lingshan.zhu@intel.com>2024-02-19 02:56:06 +0800
committerMichael S. Tsirkin <mst@redhat.com>2024-03-19 02:45:51 -0400
commit1ac61ddfee93278f87370f6c43ed669b845f9037 (patch)
tree12be37cd03d85b2085bf6a20673d2b51c4678050 /drivers/vdpa
parentae1374b7f72c973631ce881a654664fd2b40c4b9 (diff)
vDPA: report virtio-blk flush info to user space
This commit reports whether a virtio-blk device support cache flush command to user space Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Message-Id: <20240218185606.13509-11-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
-rw-r--r--drivers/vdpa/vdpa.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index 2d02ea60af0c..b246067e074b 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -1095,6 +1095,17 @@ static int vdpa_dev_blk_ro_config_fill(struct sk_buff *msg, u64 features)
return 0;
}
+static int vdpa_dev_blk_flush_config_fill(struct sk_buff *msg, u64 features)
+{
+ u8 flush;
+
+ flush = ((features & BIT_ULL(VIRTIO_BLK_F_FLUSH)) == 0) ? 0 : 1;
+ if (nla_put_u8(msg, VDPA_ATTR_DEV_BLK_CFG_FLUSH, flush))
+ return -EMSGSIZE;
+
+ return 0;
+}
+
static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev,
struct sk_buff *msg)
{
@@ -1136,6 +1147,9 @@ static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev,
if (vdpa_dev_blk_ro_config_fill(msg, features_device))
return -EMSGSIZE;
+ if (vdpa_dev_blk_flush_config_fill(msg, features_device))
+ return -EMSGSIZE;
+
return 0;
}