diff options
| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2024-02-19 02:56:01 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-03-19 02:45:51 -0400 |
| commit | 54fb04b02efd8f56e388443d5f9e03e68eef48e6 (patch) | |
| tree | 921e41b01fdb1bbb5c91e36a80ea4e615189dc6b /drivers/vdpa | |
| parent | 81f64e1d911550832b8065631c28c87c96ffca36 (diff) | |
vDPA: report virtio-block MQ info to user space
This commits allows vDPA reporting virtio-block multi-queue
configuration to user sapce.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20240218185606.13509-6-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 3e3c84bd0337..4c348da1f2f7 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -999,6 +999,19 @@ vdpa_dev_blk_seg_max_config_fill(struct sk_buff *msg, u64 features, return nla_put_u32(msg, VDPA_ATTR_DEV_BLK_CFG_SEG_MAX, val_u32); } +static int vdpa_dev_blk_mq_config_fill(struct sk_buff *msg, u64 features, + const struct virtio_blk_config *config) +{ + u16 val_u16; + + if ((features & BIT_ULL(VIRTIO_BLK_F_MQ)) == 0) + return 0; + + val_u16 = __virtio16_to_cpu(true, config->num_queues); + + return nla_put_u16(msg, VDPA_ATTR_DEV_BLK_CFG_NUM_QUEUES, val_u16); +} + static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev, struct sk_buff *msg) { @@ -1025,6 +1038,9 @@ static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev, if (vdpa_dev_blk_seg_max_config_fill(msg, features_device, &config)) return -EMSGSIZE; + if (vdpa_dev_blk_mq_config_fill(msg, features_device, &config)) + return -EMSGSIZE; + return 0; } |