Re: [PATCH v6 03/10] scsi/constant: add persistent reservation in/out protocol constants

[Stefan Hajnoczi]

On Thu, Jun 13, 2024 at 03:13:20PM +0800, Changqi Lu wrote:
> Add constants for the persistent reservation in/out protocol
> in the scsi/constant module. The constants include the persistent
> reservation command, type, and scope values defined in sections
> 6.13 and 6.14 of the SCSI Primary Commands-4 (SPC-4) specification.
> 
> Signed-off-by: Changqi Lu 
> Signed-off-by: zhenwei pi 
> ---
>  include/scsi/constants.h | 52 
>  1 file changed, 52 insertions(+)

These new constants are not copied from Linux include/scsi/scsi_proto.h
like the rest of the file, but it's okay because constants.h is not
kept in sync with the Linux headers.

Reviewed-by: Stefan Hajnoczi 


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[PATCH v6 03/10] scsi/constant: add persistent reservation in/out protocol constants

[Changqi Lu]

Add constants for the persistent reservation in/out protocol
in the scsi/constant module. The constants include the persistent
reservation command, type, and scope values defined in sections
6.13 and 6.14 of the SCSI Primary Commands-4 (SPC-4) specification.

Signed-off-by: Changqi Lu 
Signed-off-by: zhenwei pi 
---
 include/scsi/constants.h | 52 
 1 file changed, 52 insertions(+)

diff --git a/include/scsi/constants.h b/include/scsi/constants.h
index 9b98451912..922a314535 100644
--- a/include/scsi/constants.h
+++ b/include/scsi/constants.h
@@ -319,4 +319,56 @@
 #define IDENT_DESCR_TGT_DESCR_SIZE 32
 #define XCOPY_BLK2BLK_SEG_DESC_SIZE 28
 
+typedef enum {
+SCSI_PR_WRITE_EXCLUSIVE = 0x01,
+SCSI_PR_EXCLUSIVE_ACCESS= 0x03,
+SCSI_PR_WRITE_EXCLUSIVE_REGS_ONLY   = 0x05,
+SCSI_PR_EXCLUSIVE_ACCESS_REGS_ONLY  = 0x06,
+SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS= 0x07,
+SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS   = 0x08,
+} SCSIPrType;
+
+typedef enum {
+SCSI_PR_LU_SCOPE  = 0x00,
+} SCSIPrScope;
+
+typedef enum {
+SCSI_PR_OUT_REGISTER = 0x0,
+SCSI_PR_OUT_RESERVE  = 0x1,
+SCSI_PR_OUT_RELEASE  = 0x2,
+SCSI_PR_OUT_CLEAR= 0x3,
+SCSI_PR_OUT_PREEMPT  = 0x4,
+SCSI_PR_OUT_PREEMPT_AND_ABORT= 0x5,
+SCSI_PR_OUT_REG_AND_IGNORE_KEY   = 0x6,
+SCSI_PR_OUT_REG_AND_MOVE = 0x7,
+} SCSIPrOutAction;
+
+typedef enum {
+SCSI_PR_IN_READ_KEYS = 0x0,
+SCSI_PR_IN_READ_RESERVATION  = 0x1,
+SCSI_PR_IN_REPORT_CAPABILITIES   = 0x2,
+} SCSIPrInAction;
+
+typedef enum {
+/* Exclusive Access All Registrants reservation type */
+SCSI_PR_CAP_EX_AC_AR = 1 << 0,
+/* Write Exclusive reservation type */
+SCSI_PR_CAP_WR_EX = 1 << 9,
+/* Exclusive Access reservation type */
+SCSI_PR_CAP_EX_AC = 1 << 11,
+/* Write Exclusive Registrants Only reservation type */
+SCSI_PR_CAP_WR_EX_RO = 1 << 13,
+/* Exclusive Access Registrants Only reservation type */
+SCSI_PR_CAP_EX_AC_RO = 1 << 14,
+/* Write Exclusive All Registrants reservation type */
+SCSI_PR_CAP_WR_EX_AR = 1 << 15,
+
+SCSI_PR_CAP_ALL = (SCSI_PR_CAP_EX_AC_AR |
+  SCSI_PR_CAP_WR_EX |
+  SCSI_PR_CAP_EX_AC |
+  SCSI_PR_CAP_WR_EX_RO |
+  SCSI_PR_CAP_EX_AC_RO |
+  SCSI_PR_CAP_WR_EX_AR),
+} SCSIPrCap;
+
 #endif
-- 
2.20.1