diff mbox series

[v3,06/19] nvme: Fix reservation status related structs

Message ID 20221026231945.6609-7-michael.christie@oracle.com (mailing list archive)
State Not Applicable, archived
Delegated to: Mike Snitzer
Headers show
Series Use block pr_ops in LIO | expand

Commit Message

Mike Christie Oct. 26, 2022, 11:19 p.m. UTC 
This fixes the following issues with the reservation status structs:

1. resv10 is bytes 23:10 so it should be 14 bytes.
2. regctl_ds only supports 64 bit host IDs.

These are not currently used, but will be in this patchset which adds
support for the reservation report command.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
 include/linux/nvme.h | 33 +++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

Comments

Keith Busch Oct. 27, 2022, 5:04 p.m. UTC | #1 
On Wed, Oct 26, 2022 at 06:19:32PM -0500, Mike Christie wrote:
> This fixes the following issues with the reservation status structs:
> 
> 1. resv10 is bytes 23:10 so it should be 14 bytes.
> 2. regctl_ds only supports 64 bit host IDs.
> 
> These are not currently used, but will be in this patchset which adds
> support for the reservation report command.
> 
> Signed-off-by: Mike Christie <michael.christie@oracle.com>

Looks good.

Reviewed-by: Keith Busch <kbusch@kernel.org>

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diff mbox series

Patch

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 050d7d0cd81b..3ab141d982d1 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -757,20 +757,37 @@  enum {
 	NVME_LBART_ATTRIB_HIDE	= 1 << 1,
 };
 
+struct nvme_registered_ctrl {
+	__le16	cntlid;
+	__u8	rcsts;
+	__u8	rsvd3[5];
+	__le64	hostid;
+	__le64	rkey;
+};
+
+struct nvme_registered_ctrl_ext {
+	__le16	cntlid;
+	__u8	rcsts;
+	__u8	rsvd3[5];
+	__le64	rkey;
+	__u8	hostid[16];
+	__u8	rsvd32[32];
+};
+
 struct nvme_reservation_status {
 	__le32	gen;
 	__u8	rtype;
 	__u8	regctl[2];
 	__u8	resv5[2];
 	__u8	ptpls;
-	__u8	resv10[13];
-	struct {
-		__le16	cntlid;
-		__u8	rcsts;
-		__u8	resv3[5];
-		__le64	hostid;
-		__le64	rkey;
-	} regctl_ds[];
+	__u8	resv10[14];
+	union {
+		struct {
+			__u8	rsvd24[40];
+			struct nvme_registered_ctrl_ext regctl_eds[0];
+		};
+		struct nvme_registered_ctrl regctl_ds[0];
+	};
 };
 
 enum nvme_async_event_type {