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| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2024-02-19 02:56:06 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-03-19 02:45:51 -0400 |
| commit | 1ac61ddfee93278f87370f6c43ed669b845f9037 (patch) | |
| tree | 12be37cd03d85b2085bf6a20673d2b51c4678050 | |
| parent | ae1374b7f72c973631ce881a654664fd2b40c4b9 (diff) | |
| download | wireguard-linux-1ac61ddfee93278f87370f6c43ed669b845f9037.tar.gz | |
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>
| -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 2d02ea60af0c1..b246067e074bc 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; } diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h index 4be8e3a158741..43c51698195ce 100644 --- a/include/uapi/linux/vdpa.h +++ b/include/uapi/linux/vdpa.h @@ -71,6 +71,7 @@ enum vdpa_attr { 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 */ + VDPA_ATTR_DEV_BLK_CFG_FLUSH, /* u8 */ /* new attributes must be added above here */ VDPA_ATTR_MAX, |