ioctl: add nvme_get_log_reachability_associations()

Since added the NVMe 2.1 log page.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

src/nvme/ioctl.h

@@ -2238,6 +2238,41 @@ static inline int nvme_get_log_reachability_groups(int fd, __u32 len, bool rgo,
 	return nvme_get_log_page(fd, NVME_LOG_PAGE_PDU_SIZE, &args);
 }
 
+/**
+ * nvme_get_log_reachability_associations() - Retrieve Reachability Associations Log
+ * @fd:		File descriptor of nvme device
+ * @rao:	Return associations only
+ * @rae:	Retain asynchronous events
+ * @len:	The allocated length of the log page
+ * @log:	User address to store the log page
+ *
+ * Return: The nvme command status if a response was received (see
+ * &enum nvme_status_field) or -1 with errno set otherwise
+ */
+static inline int nvme_get_log_reachability_associations(int fd, bool rao, bool rae, __u32 len,
+	struct nvme_reachability_associations_log *log)
+{
+	struct nvme_get_log_args args = {
+		.lpo = 0,
+		.result = NULL,
+		.log = log,
+		.args_size = sizeof(args),
+		.fd = fd,
+		.timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
+		.lid = NVME_LOG_LID_REACHABILITY_ASSOCIATIONS,
+		.len = len,
+		.nsid = NVME_NSID_ALL,
+		.csi = NVME_CSI_NVM,
+		.lsi = NVME_LOG_LSI_NONE,
+		.lsp = rao,
+		.uuidx = NVME_LOG_LSP_NONE,
+		.rae = rae,
+		.ot = false,
+	};
+
+	return nvme_get_log_page(fd, NVME_LOG_PAGE_PDU_SIZE, &args);
+}
+
 /**
  * nvme_get_log_discovery() - Retrieve Discovery log page
  * @fd:		File descriptor of nvme device

src/nvme/types.h

@@ -4986,6 +4986,38 @@ struct nvme_reachability_groups_log {
 	struct nvme_reachability_group_desc	rgd[];
 };
 
+/**
+ * struct nvme_reachability_association_desc - Reachability Association Descriptor
+ * @rasid:	Reachability Association ID
+ * @nrid:	Number of RGID Values
+ * @chngc:	Change Count
+ * @rac:	Reachability Association Characteristics
+ * @rsvd17:	Reserved
+ * @ngid:	Reachability Group Identifier List
+ */
+struct nvme_reachability_association_desc {
+	__le32	rasid;
+	__le32	nrid;
+	__le64	chngc;
+	__u8	rac;
+	__u8	rsvd17[15];
+	__le32	ngid[];
+};
+
+/**
+ * struct nvme_reachability_associations_log - Reachability Associations Log
+ * @chngc:	Change Count
+ * @nrad:	Number of Reachability Association Descriptors
+ * @rsvd10:	Reserved
+ * @rad:	Reachability Association Descriptor List
+ */
+struct nvme_reachability_associations_log {
+	__le64						chngc;
+	__le16						nrad;
+	__u8						rsvd10[6];
+	struct nvme_reachability_association_desc	rad[];
+};
+
 /**
  * struct nvme_media_unit_stat_desc - Media Unit Status Descriptor
  * @muid:	  Media Unit Identifier