From 1ac61ddfee93278f87370f6c43ed669b845f9037 Mon Sep 17 00:00:00 2001 From: Zhu Lingshan Date: Mon, 19 Feb 2024 02:56:06 +0800 Subject: 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 Message-Id: <20240218185606.13509-11-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin --- drivers/vdpa/vdpa.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/vdpa') 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; } -- cgit v1.2.3