diff options
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bsg.h | 11 | ||||
| -rw-r--r-- | include/uapi/linux/virtio_blk.h | 5 |
2 files changed, 11 insertions, 5 deletions
diff --git a/include/uapi/linux/bsg.h b/include/uapi/linux/bsg.h index 7a12e1c..02986cf 100644 --- a/include/uapi/linux/bsg.h +++ b/include/uapi/linux/bsg.h @@ -10,12 +10,13 @@ #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2 /* - * For flags member below - * sg.h sg_io_hdr also has bits defined for it's flags member. However - * none of these bits are implemented/used by bsg. The bits below are - * allocated to not conflict with sg.h ones anyway. + * For flag constants below: + * sg.h sg_io_hdr also has bits defined for it's flags member. These + * two flag values (0x10 and 0x20) have the same meaning in sg.h . For + * bsg the BSG_FLAG_Q_AT_HEAD flag is ignored since it is the deafult. */ -#define BSG_FLAG_Q_AT_TAIL 0x10 /* default, == 0 at this bit, is Q_AT_HEAD */ +#define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ +#define BSG_FLAG_Q_AT_HEAD 0x20 struct sg_io_v4 { __s32 guard; /* [i] 'Q' to differentiate from v3 */ diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h index 6d8e61c..9ad67b2 100644 --- a/include/uapi/linux/virtio_blk.h +++ b/include/uapi/linux/virtio_blk.h @@ -40,6 +40,7 @@ #define VIRTIO_BLK_F_WCE 9 /* Writeback mode enabled after reset */ #define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */ #define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */ +#define VIRTIO_BLK_F_MQ 12 /* support more than one vq */ #ifndef __KERNEL__ /* Old (deprecated) name for VIRTIO_BLK_F_WCE. */ @@ -77,6 +78,10 @@ struct virtio_blk_config { /* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */ __u8 wce; + __u8 unused; + + /* number of vqs, only available when VIRTIO_BLK_F_MQ is set */ + __u16 num_queues; } __attribute__((packed)); /* |
