NVMe: Add NVME_IOCTL_SUBMIT_IO

Allow userspace to submit synchronous I/O like the SCSI sg interface does.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 1c0b5ef08959..0aaecb059d14 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -340,8 +340,26 @@ struct nvme_completion {
         __le16  status;         /* did the command fail, and if so, why? */
 };
 
+struct nvme_user_io {
+        __u8    opcode;
+        __u8    flags;
+        __u16   control;
+        __u32   nsid;
+        __u64   metadata;
+        __u64   addr;
+        __u64   slba;
+        __u16   nblocks;
+        __u16   block_shift;
+        __u32   dsmgmt;
+        __u32   reftag;
+        __u16   apptag;
+        __u16   appmask;
+        __u32   result;
+};
+
 #define NVME_IOCTL_IDENTIFY_NS  _IOW('N', 0x40, struct nvme_id_ns)
 #define NVME_IOCTL_IDENTIFY_CTRL _IOW('N', 0x41, struct nvme_id_ctrl)
 #define NVME_IOCTL_GET_RANGE_TYPE _IOW('N', 0x42, struct nvme_lba_range_type)
+#define NVME_IOCTL_SUBMIT_IO    _IOWR('N', 0x43, struct nvme_rw_command)
 
 #endif /* _LINUX_NVME_H */