[PATCH 01/11] nvme: add the FDP wire structures for the I/O management send command

[Guixin Liu <kanie@linux.alibaba.com>]

Add the command definition of the I/O Management Send command (opcode
0x1D) to the command opcode enum and the command union, together with
its management operation, and the log page identifiers of the FDP
pages that the target serves, so that initiators and targets share
the same wire format.

No in-kernel initiator uses the command yet; the NVMe target FDP
support that consumes these structures follows in this series.

Assisted-by: LLM
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 include/linux/nvme.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 91ce434a7e8d9..9141fd386012b 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -967,6 +967,7 @@ enum nvme_opcode {
 	nvme_cmd_resv_acquire	= 0x11,
 	nvme_cmd_io_mgmt_recv	= 0x12,
 	nvme_cmd_resv_release	= 0x15,
+	nvme_cmd_io_mgmt_send	= 0x1d,
 	nvme_cmd_zone_mgmt_send	= 0x79,
 	nvme_cmd_zone_mgmt_recv	= 0x7a,
 	nvme_cmd_zone_append	= 0x7d,
@@ -989,6 +990,7 @@ enum nvme_opcode {
 		nvme_opcode_name(nvme_cmd_resv_acquire),	\
 		nvme_opcode_name(nvme_cmd_io_mgmt_recv),	\
 		nvme_opcode_name(nvme_cmd_resv_release),	\
+		nvme_opcode_name(nvme_cmd_io_mgmt_send),	\
 		nvme_opcode_name(nvme_cmd_zone_mgmt_send),	\
 		nvme_opcode_name(nvme_cmd_zone_mgmt_recv),	\
 		nvme_opcode_name(nvme_cmd_zone_append))
@@ -1245,6 +1247,23 @@ enum {
 	NVME_IO_MGMT_RECV_MO_RUHS	= 1,
 };
 
+enum {
+	NVME_IO_MGMT_SEND_MO_RUH_UPDATE	= 1,
+};
+
+struct nvme_io_mgmt_send_cmd {
+	__u8			opcode;
+	__u8			flags;
+	__le16			command_id;
+	__le32			nsid;
+	__le64			rsvd2[2];
+	union nvme_data_ptr	dptr;
+	__u8			mo;
+	__u8			rsvd10;
+	__le16			mos;
+	__le32			rsvd11[5];
+};
+
 struct nvme_fdp_ruh_status_desc {
 	__le16			pid;
 	__le16			ruhid;
@@ -1416,6 +1435,9 @@ enum {
 	NVME_LOG_FEATURES	= 0x12,
 	NVME_LOG_RMI		= 0x16,
 	NVME_LOG_FDP_CONFIGS	= 0x20,
+	NVME_LOG_FDP_RUH_USAGE	= 0x21,
+	NVME_LOG_FDP_STATS	= 0x22,
+	NVME_LOG_FDP_EVENTS	= 0x23,
 	NVME_LOG_DISC		= 0x70,
 	NVME_LOG_RESERVATION	= 0x80,
 	NVME_FWACT_REPL		= (0 << 3),
@@ -1437,6 +1459,7 @@ struct nvme_supported_features_log {
 
 enum {
 	NVME_FIS_FSUPP	= 1 << 0,
+	NVME_FIS_EGSCPE	= 1 << 23,
 	NVME_FIS_NSCPE	= 1 << 20,
 	NVME_FIS_CSCPE	= 1 << 21,
 };
@@ -2016,6 +2039,7 @@ struct nvme_command {
 		struct nvme_dbbuf dbbuf;
 		struct nvme_directive_cmd directive;
 		struct nvme_io_mgmt_recv_cmd imr;
+		struct nvme_io_mgmt_send_cmd ims;
 	};
 };
 
-- 
2.43.7