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vDPA: report virtio-block read-only info to user space
This commit report read-only information of virtio-blk devices to user space. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Message-Id: <20240218185606.13509-10-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -1084,6 +1084,17 @@ vdpa_dev_blk_write_zeroes_config_fill(struct sk_buff *msg, u64 features,
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return 0;
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}
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static int vdpa_dev_blk_ro_config_fill(struct sk_buff *msg, u64 features)
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{
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u8 ro;
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ro = ((features & BIT_ULL(VIRTIO_BLK_F_RO)) == 0) ? 0 : 1;
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if (nla_put_u8(msg, VDPA_ATTR_DEV_BLK_CFG_READ_ONLY, ro))
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return -EMSGSIZE;
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return 0;
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}
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static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev,
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struct sk_buff *msg)
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{
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@ -1122,6 +1133,9 @@ static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev,
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if (vdpa_dev_blk_write_zeroes_config_fill(msg, features_device, &config))
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return -EMSGSIZE;
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if (vdpa_dev_blk_ro_config_fill(msg, features_device))
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return -EMSGSIZE;
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return 0;
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}
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@ -70,6 +70,7 @@ enum vdpa_attr {
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VDPA_ATTR_DEV_BLK_CFG_DISCARD_SEC_ALIGN,/* u32 */
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VDPA_ATTR_DEV_BLK_CFG_MAX_WRITE_ZEROES_SEC, /* u32 */
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VDPA_ATTR_DEV_BLK_CFG_MAX_WRITE_ZEROES_SEG, /* u32 */
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VDPA_ATTR_DEV_BLK_CFG_READ_ONLY, /* u8 */
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/* new attributes must be added above here */
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VDPA_ATTR_MAX,
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