diff options
Diffstat (limited to 'drivers/vdpa/vdpa.c')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 76b2e31d6229..9348818b8bf9 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -1041,6 +1041,29 @@ static int vdpa_dev_blk_topology_config_fill(struct sk_buff *msg, u64 features, return 0; } +static int vdpa_dev_blk_discard_config_fill(struct sk_buff *msg, u64 features, + const struct virtio_blk_config *config) +{ + u32 val_u32; + + if ((features & BIT_ULL(VIRTIO_BLK_F_DISCARD)) == 0) + return 0; + + val_u32 = __virtio32_to_cpu(true, config->max_discard_sectors); + if (nla_put_u32(msg, VDPA_ATTR_DEV_BLK_CFG_MAX_DISCARD_SEC, val_u32)) + return -EMSGSIZE; + + val_u32 = __virtio32_to_cpu(true, config->max_discard_seg); + if (nla_put_u32(msg, VDPA_ATTR_DEV_BLK_CFG_MAX_DISCARD_SEG, val_u32)) + return -EMSGSIZE; + + val_u32 = __virtio32_to_cpu(true, config->discard_sector_alignment); + if (nla_put_u32(msg, VDPA_ATTR_DEV_BLK_CFG_DISCARD_SEC_ALIGN, val_u32)) + return -EMSGSIZE; + + return 0; +} + static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev, struct sk_buff *msg) { @@ -1073,6 +1096,9 @@ static int vdpa_dev_blk_config_fill(struct vdpa_device *vdev, if (vdpa_dev_blk_topology_config_fill(msg, features_device, &config)) return -EMSGSIZE; + if (vdpa_dev_blk_discard_config_fill(msg, features_device, &config)) + return -EMSGSIZE; + return 0; } |