Commit 1900e1a4 authored by Guixin Liu's avatar Guixin Liu Committed by Keith Busch
Browse files

nvme: add reservation command's defines 



This is a preparation patch for NVMeOF target reservation
commands implantation.
Add the defines of reservation command, such as reservation log
and sub operations.

Signed-off-by: default avatarGuixin Liu <kanie@linux.alibaba.com>
Tested-by: default avatarChaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: default avatarChaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 43d5d3b4

include/linux/nvme.h

+68 −0
Original line number Diff line number Diff line
@@ -2037,4 +2037,72 @@ struct nvme_completion { 
#define NVME_MINOR(ver)		(((ver) >> 8) & 0xff)

#define NVME_TERTIARY(ver)	((ver) & 0xff)



enum {

	NVME_AEN_RESV_LOG_PAGE_AVALIABLE	= 0x00,

};



enum {

	NVME_PR_LOG_EMPTY_LOG_PAGE			= 0x00,

	NVME_PR_LOG_REGISTRATION_PREEMPTED		= 0x01,

	NVME_PR_LOG_RESERVATION_RELEASED		= 0x02,

	NVME_PR_LOG_RESERVATOPM_PREEMPTED		= 0x03,

};



enum {

	NVME_PR_NOTIFY_BIT_REG_PREEMPTED		= 1,

	NVME_PR_NOTIFY_BIT_RESV_RELEASED		= 2,

	NVME_PR_NOTIFY_BIT_RESV_PREEMPTED		= 3,

};



struct nvme_pr_log {

	__le64			count;

	__u8			type;

	__u8			nr_pages;

	__u8			rsvd1[2];

	__le32			nsid;

	__u8			rsvd2[48];

};



struct nvmet_pr_register_data {

	__le64	crkey;

	__le64	nrkey;

};



struct nvmet_pr_acquire_data {

	__le64	crkey;

	__le64	prkey;

};



struct nvmet_pr_release_data {

	__le64	crkey;

};



enum nvme_pr_capabilities {

	NVME_PR_SUPPORT_PTPL				= 1,

	NVME_PR_SUPPORT_WRITE_EXCLUSIVE			= 1 << 1,

	NVME_PR_SUPPORT_EXCLUSIVE_ACCESS		= 1 << 2,

	NVME_PR_SUPPORT_WRITE_EXCLUSIVE_REG_ONLY	= 1 << 3,

	NVME_PR_SUPPORT_EXCLUSIVE_ACCESS_REG_ONLY	= 1 << 4,

	NVME_PR_SUPPORT_WRITE_EXCLUSIVE_ALL_REGS	= 1 << 5,

	NVME_PR_SUPPORT_EXCLUSIVE_ACCESS_ALL_REGS	= 1 << 6,

	NVME_PR_SUPPORT_IEKEY_VER_1_3_DEF		= 1 << 7,

};



enum nvme_pr_register_action {

	NVME_PR_REGISTER_ACT_REG		= 0,

	NVME_PR_REGISTER_ACT_UNREG		= 1,

	NVME_PR_REGISTER_ACT_REPLACE		= 1 << 1,

};



enum nvme_pr_acquire_action {

	NVME_PR_ACQUIRE_ACT_ACQUIRE		= 0,

	NVME_PR_ACQUIRE_ACT_PREEMPT		= 1,

	NVME_PR_ACQUIRE_ACT_PREEMPT_AND_ABORT	= 1 << 1,

};



enum nvme_pr_release_action {

	NVME_PR_RELEASE_ACT_RELEASE		= 0,

	NVME_PR_RELEASE_ACT_CLEAR		= 1,

};



#endif /* _LINUX_NVME_H */