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| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2024-02-19 02:56:05 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-03-19 02:45:51 -0400 |
| commit | ae1374b7f72c973631ce881a654664fd2b40c4b9 (patch) | |
| tree | d5cfa59322f8b8275b886e501222d2fb41cf1621 | |
| parent | 6bdc7846e627ec21fc79a6d2554f69546a7b4985 (diff) | |
| download | lwn-ae1374b7f72c973631ce881a654664fd2b40c4b9.tar.gz lwn-ae1374b7f72c973631ce881a654664fd2b40c4b9.zip | |
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>
| -rw-r--r-- | drivers/vdpa/vdpa.c | 14 | ||||
| -rw-r--r-- | include/uapi/linux/vdpa.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index bcea9f880042..2d02ea60af0c 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -1084,6 +1084,17 @@ vdpa_dev_blk_write_zeroes_config_fill(struct sk_buff *msg, u64 features, return 0; } +static int vdpa_dev_blk_ro_config_fill(struct sk_buff *msg, u64 features) +{ + u8 ro; + + ro = ((features & BIT_ULL(VIRTIO_BLK_F_RO)) == 0) ? 0 : 1; + if (nla_put_u8(msg, VDPA_ATTR_DEV_BLK_CFG_READ_ONLY, ro)) + return -EMSGSIZE; + + return 0; +} + static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev, struct sk_buff *msg) { @@ -1122,6 +1133,9 @@ static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev, if (vdpa_dev_blk_write_zeroes_config_fill(msg, features_device, &config)) return -EMSGSIZE; + if (vdpa_dev_blk_ro_config_fill(msg, features_device)) + return -EMSGSIZE; + return 0; } diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h index 797d5708492f..4be8e3a15874 100644 --- a/include/uapi/linux/vdpa.h +++ b/include/uapi/linux/vdpa.h @@ -70,6 +70,7 @@ enum vdpa_attr { VDPA_ATTR_DEV_BLK_CFG_DISCARD_SEC_ALIGN,/* u32 */ VDPA_ATTR_DEV_BLK_CFG_MAX_WRITE_ZEROES_SEC, /* u32 */ VDPA_ATTR_DEV_BLK_CFG_MAX_WRITE_ZEROES_SEG, /* u32 */ + VDPA_ATTR_DEV_BLK_CFG_READ_ONLY, /* u8 */ /* new attributes must be added above here */ VDPA_ATTR_MAX, |