diff options
Diffstat (limited to 'include/uapi/linux/nbd.h')
| -rw-r--r-- | include/uapi/linux/nbd.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/uapi/linux/nbd.h b/include/uapi/linux/nbd.h index c91c642ea900..a50527ebf671 100644 --- a/include/uapi/linux/nbd.h +++ b/include/uapi/linux/nbd.h @@ -37,14 +37,22 @@ enum { NBD_CMD_TRIM = 4 }; -/* values for flags field */ +/* values for flags field, these are server interaction specific. */ #define NBD_FLAG_HAS_FLAGS (1 << 0) /* nbd-server supports flags */ #define NBD_FLAG_READ_ONLY (1 << 1) /* device is read-only */ #define NBD_FLAG_SEND_FLUSH (1 << 2) /* can flush writeback cache */ +#define NBD_FLAG_SEND_FUA (1 << 3) /* send FUA (forced unit access) */ /* there is a gap here to match userspace */ #define NBD_FLAG_SEND_TRIM (1 << 5) /* send trim/discard */ #define NBD_FLAG_CAN_MULTI_CONN (1 << 8) /* Server supports multiple connections per export. */ +/* values for cmd flags in the upper 16 bits of request type */ +#define NBD_CMD_FLAG_FUA (1 << 16) /* FUA (forced unit access) op */ + +/* These are client behavior specific flags. */ +#define NBD_CFLAG_DESTROY_ON_DISCONNECT (1 << 0) /* delete the nbd device on + disconnect. */ + /* userspace doesn't need the nbd_device structure */ /* These are sent over the network in the request/reply magic fields */ |