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authorZhu Lingshan <lingshan.zhu@intel.com>2024-02-19 02:55:59 +0800
committerMichael S. Tsirkin <mst@redhat.com>2024-03-19 02:45:51 -0400
commit3a1d33fb7e5f96471aa7bfe97dd09afc2aa03b39 (patch)
treec70effff4b373a880a7c8007ff4a4fb526d8e7cd /drivers/vdpa
parent330b8aea692410fbe8f0d058e01aea2986613ff7 (diff)
vDPA: report virtio-block block-size to user space
This commit allows reporting the block size of a virtio-block device to user space. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Message-Id: <20240218185606.13509-4-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
-rw-r--r--drivers/vdpa/vdpa.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index db355d4683ba..d96dc2ad48aa 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -970,6 +970,21 @@ vdpa_dev_blk_seg_size_config_fill(struct sk_buff *msg, u64 features,
return nla_put_u32(msg, VDPA_ATTR_DEV_BLK_CFG_SEG_SIZE, val_u32);
}
+/* fill the block size*/
+static int
+vdpa_dev_blk_block_size_config_fill(struct sk_buff *msg, u64 features,
+ const struct virtio_blk_config *config)
+{
+ u32 val_u32;
+
+ if ((features & BIT_ULL(VIRTIO_BLK_F_BLK_SIZE)) == 0)
+ return 0;
+
+ val_u32 = __virtio32_to_cpu(true, config->blk_size);
+
+ return nla_put_u32(msg, VDPA_ATTR_DEV_BLK_CFG_BLK_SIZE, val_u32);
+}
+
static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev,
struct sk_buff *msg)
{
@@ -990,6 +1005,9 @@ static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev,
if (vdpa_dev_blk_seg_size_config_fill(msg, features_device, &config))
return -EMSGSIZE;
+ if (vdpa_dev_blk_block_size_config_fill(msg, features_device, &config))
+ return -EMSGSIZE;
+
return 0;
}