nvme: add reachability-groups-log command

nvme-builtin.h

@@ -62,6 +62,7 @@
 	ENTRY("rotational-media-info-log", "Retrieve Rotational Media Information Log, show it", get_rotational_media_info_log)
 	ENTRY("changed-alloc-ns-list-log", "Retrieve Changed Allocated Namespace List, show it", get_changed_alloc_ns_list_log)
 	ENTRY("dispersed-ns-participating-nss-log", "Retrieve Dispersed Namespace Participating NVM Subsystems Log, show it", get_dispersed_ns_participating_nss_log)
+	ENTRY("reachability-groups-log", "Retrieve Reachability Groups Log, show it", get_reachability_groups_log)
 	ENTRY("set-feature", "Set a feature and show the resulting value", set_feature)
 	ENTRY("set-property", "Set a property and show the resulting value", set_property)
 	ENTRY("get-property", "Get a property and show the resulting value", get_property)

nvme-print-binary.c

@@ -321,6 +321,11 @@ static void binary_dispersed_ns_psub_log(struct nvme_dispersed_ns_participating_
 	d_raw((unsigned char *)log, sizeof(*log));
 }
 
+static void binary_reachability_groups_log(struct nvme_reachability_groups_log *log)
+{
+	d_raw((unsigned char *)log, sizeof(*log));
+}
+
 static struct print_ops binary_print_ops = {
 	/* libnvme types.h print functions */
 	.ana_log			= binary_ana_log,
@@ -390,6 +395,7 @@ static struct print_ops binary_print_ops = {
 	.mgmt_addr_list_log		= binary_mgmt_addr_list_log,
 	.rotational_media_info_log	= binary_rotational_media_info_log,
 	.dispersed_ns_psub_log		= binary_dispersed_ns_psub_log,
+	.reachability_groups_log	= binary_reachability_groups_log,
 
 	/* libnvme tree print functions */
 	.list_item			= NULL,

nvme-print-json.c

@@ -4677,6 +4677,30 @@ static void json_dispersed_ns_psub_log(struct nvme_dispersed_ns_participating_ns
 	json_print(r);
 }
 
+static void json_reachability_groups_log(struct nvme_reachability_groups_log *log)
+{
+	struct json_object *r = json_create_object();
+	__u16 i;
+	__u32 j;
+	char json_str[STR_LEN];
+	struct json_object *rgd;
+
+	obj_add_uint64(r, "chngc", le64_to_cpu(log->chngc));
+	obj_add_uint(r, "nrgd", le16_to_cpu(log->nrgd));
+
+	for (i = 0; i < le16_to_cpu(log->nrgd); i++) {
+		snprintf(json_str, sizeof(json_str), "rgid: %u", le32_to_cpu(log->rgd[i].rgid));
+		rgd = json_create_object();
+		obj_add_uint(rgd, "nnid", le32_to_cpu(log->rgd[i].nnid));
+		obj_add_uint64(rgd, "chngc", le64_to_cpu(log->rgd[i].chngc));
+		for (j = 0; j < le32_to_cpu(log->rgd[i].nnid); j++)
+			obj_add_uint(rgd, "nnid", le32_to_cpu(log->rgd[i].nsid[j]));
+		obj_add_obj(r, json_str, rgd);
+	}
+
+	json_print(r);
+}
+
 static struct print_ops json_print_ops = {
 	/* libnvme types.h print functions */
 	.ana_log			= json_ana_log,
@@ -4747,6 +4771,7 @@ static struct print_ops json_print_ops = {
 	.mgmt_addr_list_log		= json_mgmt_addr_list_log,
 	.rotational_media_info_log	= json_rotational_media_info_log,
 	.dispersed_ns_psub_log		= json_dispersed_ns_psub_log,
+	.reachability_groups_log	= json_reachability_groups_log,
 
 	/* libnvme tree print functions */
 	.list_item			= json_list_item,

nvme-print-stdout.c

@@ -5638,6 +5638,23 @@ static void stdout_dispersed_ns_psub_log(struct nvme_dispersed_ns_participating_
 		       &log->participating_nss[i * NVME_NQN_LENGTH]);
 }
 
+static void stdout_reachability_groups_log(struct nvme_reachability_groups_log *log)
+{
+	__u16 i;
+	__u32 j;
+
+	printf("chngc: %"PRIu64"\n", le64_to_cpu(log->chngc));
+	printf("nrgd: %u\n", le16_to_cpu(log->nrgd));
+
+	for (i = 0; i < le16_to_cpu(log->nrgd); i++) {
+		printf("rgid: %u\n", le32_to_cpu(log->rgd[i].rgid));
+		printf("nnid: %u\n", le32_to_cpu(log->rgd[i].nnid));
+		printf("chngc: %"PRIu64"\n", le64_to_cpu(log->rgd[i].chngc));
+		for (j = 0; j < le32_to_cpu(log->rgd[i].nnid); j++)
+			printf("nsid%u: %u\n", j, le32_to_cpu(log->rgd[i].nsid[j]));
+	}
+}
+
 static struct print_ops stdout_print_ops = {
 	/* libnvme types.h print functions */
 	.ana_log			= stdout_ana_log,
@@ -5708,6 +5725,7 @@ static struct print_ops stdout_print_ops = {
 	.mgmt_addr_list_log		= stdout_mgmt_addr_list_log,
 	.rotational_media_info_log	= stdout_rotational_media_info_log,
 	.dispersed_ns_psub_log		= stdout_dispersed_ns_psub_log,
+	.reachability_groups_log	= stdout_reachability_groups_log,
 
 	/* libnvme tree print functions */
 	.list_item			= stdout_list_item,

nvme-print.c

@@ -1508,3 +1508,9 @@ void nvme_show_dispersed_ns_psub_log(struct nvme_dispersed_ns_participating_nss_
 {
 	nvme_print(dispersed_ns_psub_log, flags, log);
 }
+
+void nvme_show_reachability_groups_log(struct nvme_reachability_groups_log *log,
+				       nvme_print_flags_t flags)
+{
+	nvme_print(reachability_groups_log, flags, log);
+}

nvme-print.h

@@ -91,6 +91,7 @@ struct print_ops {
 	void (*mgmt_addr_list_log)(struct nvme_mgmt_addr_list_log *ma_log);
 	void (*rotational_media_info_log)(struct nvme_rotational_media_info_log *info);
 	void (*dispersed_ns_psub_log)(struct nvme_dispersed_ns_participating_nss_log *log);
+	void (*reachability_groups_log)(struct nvme_reachability_groups_log *log);
 
 	/* libnvme tree print functions */
 	void (*list_item)(nvme_ns_t n);
@@ -338,4 +339,6 @@ void nvme_show_rotational_media_info_log(struct nvme_rotational_media_info_log *
 					 nvme_print_flags_t flags);
 void nvme_show_dispersed_ns_psub_log(struct nvme_dispersed_ns_participating_nss_log *log,
 				     nvme_print_flags_t flags);
+void nvme_show_reachability_groups_log(struct nvme_reachability_groups_log *log,
+				       nvme_print_flags_t flags);
 #endif /* NVME_PRINT_H */

nvme-wrap.c

@@ -457,3 +457,9 @@ int nvme_cli_get_log_dispersed_ns_participating_nss(struct nvme_dev *dev, __u32
 {
 	return do_admin_op(get_log_dispersed_ns_participating_nss, dev, nsid, len, log);
 }
+
+int nvme_cli_get_log_reachability_groups(struct nvme_dev *dev, bool rgo, bool rae, __u32 len,
+					 struct nvme_reachability_groups_log *log)
+{
+	return do_admin_op(get_log_reachability_groups, dev, len, rgo, rae, log);
+}

nvme-wrap.h

@@ -157,4 +157,6 @@ int nvme_cli_get_log_rotational_media_info(struct nvme_dev *dev, __u16 endgid, _
 int nvme_cli_get_log_dispersed_ns_participating_nss(struct nvme_dev *dev, __u32 nsid, __u32 len,
 	struct nvme_dispersed_ns_participating_nss_log *log);
 
+int nvme_cli_get_log_reachability_groups(struct nvme_dev *dev, bool rgo, bool rae, __u32 len,
+					 struct nvme_reachability_groups_log *log);
 #endif /* _NVME_WRAP_H */

nvme.c

@@ -10256,6 +10256,130 @@ static int get_dispersed_ns_participating_nss_log(int argc, char **argv, struct
 	return err;
 }
 
+static int get_log_offset(struct nvme_dev *dev, struct nvme_get_log_args *args, __u64 *offset,
+			  __u32 len, void **log)
+{
+	args->lpo = *offset,
+	args->log = *log + *offset,
+	args->len = len;
+	*offset += args->len;
+	*log = nvme_realloc(*log, *offset);
+	if (!*log)
+		return -ENOMEM;
+	return nvme_cli_get_log_page(dev, NVME_LOG_PAGE_PDU_SIZE, args);
+}
+
+static int get_reachability_group_desc(struct nvme_dev *dev, struct nvme_get_log_args *args,
+				       __u64 offset, struct nvme_reachability_groups_log **logp)
+{
+	int err;
+	struct nvme_reachability_groups_log *log = *logp;
+	__u16 i;
+	__u32 len;
+
+	for (i = 0; i < le16_to_cpu(log->nrgd); i++) {
+		len = sizeof(*log->rgd);
+		err = get_log_offset(dev, args, &offset, len, (void **)&log);
+		if (err)
+			goto err_free;
+		len = le32_to_cpu(log->rgd[i].nnid) * sizeof(*log->rgd[i].nsid);
+		err = get_log_offset(dev, args, &offset, len, (void **)&log);
+		if (err)
+			goto err_free;
+	}
+
+	*logp = log;
+	return 0;
+
+err_free:
+	free(log);
+	*logp = NULL;
+	return err;
+}
+
+static int get_reachability_groups(struct nvme_dev *dev, bool rgo, bool rae,
+				   struct nvme_reachability_groups_log **logp)
+{
+	int err;
+	struct nvme_reachability_groups_log *log;
+	__u64 log_len = sizeof(*log);
+	struct nvme_get_log_args args = {
+		.args_size = sizeof(args),
+		.fd = dev_fd(dev),
+		.timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
+		.lid = NVME_LOG_LID_REACHABILITY_GROUPS,
+		.nsid = NVME_NSID_ALL,
+		.lsp = rgo,
+		.rae = rae,
+	};
+
+	log = nvme_alloc(log_len);
+	if (!log)
+		return -ENOMEM;
+
+	err = nvme_cli_get_log_reachability_groups(dev, rgo, rae, log_len, log);
+	if (err)
+		goto err_free;
+
+	err = get_reachability_group_desc(dev, &args, log_len, &log);
+	if (err)
+		goto err_free;
+
+	*logp = log;
+	return 0;
+
+err_free:
+	free(log);
+	return err;
+}
+
+static int get_reachability_groups_log(int argc, char **argv, struct command *cmd,
+				       struct plugin *plugin)
+{
+	const char *desc = "Retrieve Reachability Groups Log, show it";
+	const char *rgo = "Return Groups Only";
+	nvme_print_flags_t flags;
+	int err;
+
+	_cleanup_free_ struct nvme_reachability_groups_log *log = NULL;
+
+	_cleanup_nvme_dev_ struct nvme_dev *dev = NULL;
+
+	struct config {
+		bool rgo;
+		bool rae;
+	};
+
+	struct config cfg = {
+		.rgo = false,
+		.rae = false,
+	};
+
+	NVME_ARGS(opts,
+		  OPT_FLAG("groups-only", 'g', &cfg.rgo, rgo),
+		  OPT_FLAG("rae", 'r', &cfg.rae, rae));
+
+	err = parse_and_open(&dev, argc, argv, desc, opts);
+	if (err)
+		return err;
+
+	err = validate_output_format(nvme_cfg.output_format, &flags);
+	if (err < 0) {
+		nvme_show_error("Invalid output format");
+		return err;
+	}
+
+	err = get_reachability_groups(dev, cfg.rgo, cfg.rae, &log);
+	if (!err)
+		nvme_show_reachability_groups_log(log, flags);
+	else if (err > 0)
+		nvme_show_status(err);
+	else
+		nvme_show_perror("rotational media info log");
+
+	return err;
+}
+
 void register_extension(struct plugin *plugin)
 {
 	plugin->parent = &nvme;