configfs-tsm: Namespace TSM report symbols

In preparation for new + common TSM (TEE Security Manager)
infrastructure, namespace the TSM report symbols in tsm.h with an
_REPORT suffix to differentiate them from other incoming tsm work.

Cc: Yilun Xu <[e-mail]>
Cc: Samuel Ortiz <[e-mail]>
Cc: Tom Lendacky <[e-mail]>
Cc: Sami Mujawar <[e-mail]>
Cc: Steven Price <[e-mail]>
Reviewed-by: Alexey Kardashevskiy <[e-mail]>
Reviewed-by: Suzuki K Poulose <[e-mail]>
Reviewed-by: Kai Huang <[e-mail]>
Reviewed-by: Kuppuswamy Sathyanarayanan <[e-mail]>
Reviewed-by: Steven Price <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Dan Williams <[e-mail]>

MAINTAINERS

···
 M:	Dan Williams <[e-mail]>
 L:	[e-mail]
 S:	Maintained
-F:	Documentation/ABI/testing/configfs-tsm
+F:	Documentation/ABI/testing/configfs-tsm-report
 F:	drivers/virt/coco/tsm.c
 F:	include/linux/tsm.h
 

drivers/virt/coco/arm-cca-guest/arm-cca-guest.c

···
 	struct arm_cca_token_info info;
 	void *buf;
 	u8 *token __free(kvfree) = NULL;
-	struct tsm_desc *desc = &report->desc;
+	struct tsm_report_desc *desc = &report->desc;
 
 	if (desc->inblob_len < 32 || desc->inblob_len > 64)
 		return -EINVAL;
···
 	return ret;
 }
 
-static const struct tsm_ops arm_cca_tsm_ops = {
+static const struct tsm_report_ops arm_cca_tsm_ops = {
 	.name = KBUILD_MODNAME,
 	.report_new = arm_cca_report_new,
 };
···
 	if (!is_realm_world())
 		return -ENODEV;
 
-	ret = tsm_register(&arm_cca_tsm_ops, NULL);
+	ret = tsm_report_register(&arm_cca_tsm_ops, NULL);
 	if (ret < 0)
 		pr_err("Error %d registering with TSM\n", ret);
 
···
  */
 static void __exit arm_cca_guest_exit(void)
 {
-	tsm_unregister(&arm_cca_tsm_ops);
+	tsm_report_unregister(&arm_cca_tsm_ops);
 }
 module_exit(arm_cca_guest_exit);
 

drivers/virt/coco/sev-guest/sev-guest.c

···
 static int sev_svsm_report_new(struct tsm_report *report, void *data)
 {
 	unsigned int rep_len, man_len, certs_len;
-	struct tsm_desc *desc = &report->desc;
+	struct tsm_report_desc *desc = &report->desc;
 	struct svsm_attest_call ac = {};
 	unsigned int retry_count;
 	void *rep, *man, *certs;
···
 static int sev_report_new(struct tsm_report *report, void *data)
 {
 	struct snp_msg_cert_entry *cert_table;
-	struct tsm_desc *desc = &report->desc;
+	struct tsm_report_desc *desc = &report->desc;
 	struct snp_guest_dev *snp_dev = data;
 	struct snp_msg_report_resp_hdr hdr;
 	const u32 report_size = SZ_4K;
···
 	return false;
 }
 
-static struct tsm_ops sev_tsm_ops = {
+static struct tsm_report_ops sev_tsm_report_ops = {
 	.name = KBUILD_MODNAME,
 	.report_new = sev_report_new,
 	.report_attr_visible = sev_report_attr_visible,
···
 
 static void unregister_sev_tsm(void *data)
 {
-	tsm_unregister(&sev_tsm_ops);
+	tsm_report_unregister(&sev_tsm_report_ops);
 }
 
 static int __init sev_guest_probe(struct platform_device *pdev)
···
 	misc->fops = &snp_guest_fops;
 
 	/* Set the privlevel_floor attribute based on the vmpck_id */
-	sev_tsm_ops.privlevel_floor = mdesc->vmpck_id;
+	sev_tsm_report_ops.privlevel_floor = mdesc->vmpck_id;
 
-	ret = tsm_register(&sev_tsm_ops, snp_dev);
+	ret = tsm_report_register(&sev_tsm_report_ops, snp_dev);
 	if (ret)
 		goto e_msg_init;
 

drivers/virt/coco/tdx-guest/tdx-guest.c

···
 {
 	u8 *buf, *reportdata = NULL, *tdreport = NULL;
 	struct tdx_quote_buf *quote_buf = quote_data;
-	struct tsm_desc *desc = &report->desc;
+	struct tsm_report_desc *desc = &report->desc;
 	int ret;
 	u64 err;
 
···
 };
 MODULE_DEVICE_TABLE(x86cpu, tdx_guest_ids);
 
-static const struct tsm_ops tdx_tsm_ops = {
+static const struct tsm_report_ops tdx_tsm_ops = {
 	.name = KBUILD_MODNAME,
 	.report_new = tdx_report_new,
 	.report_attr_visible = tdx_report_attr_visible,
···
 		goto free_misc;
 	}
 
-	ret = tsm_register(&tdx_tsm_ops, NULL);
+	ret = tsm_report_register(&tdx_tsm_ops, NULL);
 	if (ret)
 		goto free_quote;
 
···
 
 static void __exit tdx_guest_exit(void)
 {
-	tsm_unregister(&tdx_tsm_ops);
+	tsm_report_unregister(&tdx_tsm_ops);
 	free_quote_buf(quote_data);
 	misc_deregister(&tdx_misc_dev);
 }

drivers/virt/coco/tsm.c

···
 #include <linux/configfs.h>
 
 static struct tsm_provider {
-	const struct tsm_ops *ops;
+	const struct tsm_report_ops *ops;
 	void *data;
 } provider;
 static DECLARE_RWSEM(tsm_rwsem);
···
 	 * SEV-SNP GHCB) and a minimum of a TSM selected floor value no less
 	 * than 0.
 	 */
-	if (provider.ops->privlevel_floor > val || val > TSM_PRIVLEVEL_MAX)
+	if (provider.ops->privlevel_floor > val || val > TSM_REPORT_PRIVLEVEL_MAX)
 		return -EINVAL;
 
 	guard(rwsem_write)(&tsm_rwsem);
···
 	memcpy(report->desc.inblob, buf, count);
 	return count;
 }
-CONFIGFS_BIN_ATTR_WO(tsm_report_, inblob, NULL, TSM_INBLOB_MAX);
+CONFIGFS_BIN_ATTR_WO(tsm_report_, inblob, NULL, TSM_REPORT_INBLOB_MAX);
 
 static ssize_t tsm_report_generation_show(struct config_item *cfg, char *buf)
 {
···
 			       size_t count, enum tsm_data_select select)
 {
 	struct tsm_report_state *state = to_state(report);
-	const struct tsm_ops *ops;
+	const struct tsm_report_ops *ops;
 	ssize_t rc;
 
 	/* try to read from the existing report if present and valid... */
···
 
 	return tsm_report_read(report, buf, count, TSM_REPORT);
 }
-CONFIGFS_BIN_ATTR_RO(tsm_report_, outblob, NULL, TSM_OUTBLOB_MAX);
+CONFIGFS_BIN_ATTR_RO(tsm_report_, outblob, NULL, TSM_REPORT_OUTBLOB_MAX);
 
 static ssize_t tsm_report_auxblob_read(struct config_item *cfg, void *buf,
 				       size_t count)
···
 
 	return tsm_report_read(report, buf, count, TSM_CERTS);
 }
-CONFIGFS_BIN_ATTR_RO(tsm_report_, auxblob, NULL, TSM_OUTBLOB_MAX);
+CONFIGFS_BIN_ATTR_RO(tsm_report_, auxblob, NULL, TSM_REPORT_OUTBLOB_MAX);
 
 static ssize_t tsm_report_manifestblob_read(struct config_item *cfg, void *buf,
 					    size_t count)
···
 
 	return tsm_report_read(report, buf, count, TSM_MANIFEST);
 }
-CONFIGFS_BIN_ATTR_RO(tsm_report_, manifestblob, NULL, TSM_OUTBLOB_MAX);
+CONFIGFS_BIN_ATTR_RO(tsm_report_, manifestblob, NULL, TSM_REPORT_OUTBLOB_MAX);
 
 static struct configfs_attribute *tsm_report_attrs[] = {
 	[TSM_REPORT_GENERATION] = &tsm_report_attr_generation,
···
 	.su_mutex = __MUTEX_INITIALIZER(tsm_configfs.su_mutex),
 };
 
-int tsm_register(const struct tsm_ops *ops, void *priv)
+int tsm_report_register(const struct tsm_report_ops *ops, void *priv)
 {
-	const struct tsm_ops *conflict;
+	const struct tsm_report_ops *conflict;
 
 	guard(rwsem_write)(&tsm_rwsem);
 	conflict = provider.ops;
···
 	provider.data = priv;
 	return 0;
 }
-EXPORT_SYMBOL_GPL(tsm_register);
+EXPORT_SYMBOL_GPL(tsm_report_register);
 
-int tsm_unregister(const struct tsm_ops *ops)
+int tsm_report_unregister(const struct tsm_report_ops *ops)
 {
 	guard(rwsem_write)(&tsm_rwsem);
 	if (ops != provider.ops)
···
 	provider.data = NULL;
 	return 0;
 }
-EXPORT_SYMBOL_GPL(tsm_unregister);
+EXPORT_SYMBOL_GPL(tsm_report_unregister);
 
 static struct config_group *tsm_report_group;
 
-static int __init tsm_init(void)
+static int __init tsm_report_init(void)
 {
 	struct config_group *root = &tsm_configfs.su_group;
 	struct config_group *tsm;
···
 
 	return 0;
 }
-module_init(tsm_init);
+module_init(tsm_report_init);
 
-static void __exit tsm_exit(void)
+static void __exit tsm_report_exit(void)
 {
 	configfs_unregister_default_group(tsm_report_group);
 	configfs_unregister_subsystem(&tsm_configfs);
 }
-module_exit(tsm_exit);
+module_exit(tsm_report_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Provide Trusted Security Module attestation reports via configfs");

include/linux/tsm.h

···
 #include <linux/types.h>
 #include <linux/uuid.h>
 
-#define TSM_INBLOB_MAX 64
-#define TSM_OUTBLOB_MAX SZ_32K
+#define TSM_REPORT_INBLOB_MAX 64
+#define TSM_REPORT_OUTBLOB_MAX SZ_32K
 
 /*
  * Privilege level is a nested permission concept to allow confidential
  * guests to partition address space, 4-levels are supported.
  */
-#define TSM_PRIVLEVEL_MAX 3
+#define TSM_REPORT_PRIVLEVEL_MAX 3
 
 /**
- * struct tsm_desc - option descriptor for generating tsm report blobs
+ * struct tsm_report_desc - option descriptor for generating tsm report blobs
  * @privlevel: optional privilege level to associate with @outblob
  * @inblob_len: sizeof @inblob
  * @inblob: arbitrary input data
···
  * @service_guid: optional service-provider service guid to attest
  * @service_manifest_version: optional service-provider service manifest version requested
  */
-struct tsm_desc {
+struct tsm_report_desc {
 	unsigned int privlevel;
 	size_t inblob_len;
-	u8 inblob[TSM_INBLOB_MAX];
+	u8 inblob[TSM_REPORT_INBLOB_MAX];
 	char *service_provider;
 	guid_t service_guid;
 	unsigned int service_manifest_version;
···
  * @manifestblob: (optional) manifest data associated with the report
  */
 struct tsm_report {
-	struct tsm_desc desc;
+	struct tsm_report_desc desc;
 	size_t outblob_len;
 	u8 *outblob;
 	size_t auxblob_len;
···
 };
 
 /**
- * struct tsm_ops - attributes and operations for tsm instances
+ * struct tsm_report_ops - attributes and operations for tsm_report instances
  * @name: tsm id reflected in /sys/kernel/config/tsm/report/$report/provider
  * @privlevel_floor: convey base privlevel for nested scenarios
  * @report_new: Populate @report with the report blob and auxblob
···
  * Implementation specific ops, only one is expected to be registered at
  * a time i.e. only one of "sev-guest", "tdx-guest", etc.
  */
-struct tsm_ops {
+struct tsm_report_ops {
 	const char *name;
 	unsigned int privlevel_floor;
 	int (*report_new)(struct tsm_report *report, void *data);
···
 	bool (*report_bin_attr_visible)(int n);
 };
 
-int tsm_register(const struct tsm_ops *ops, void *priv);
-int tsm_unregister(const struct tsm_ops *ops);
+int tsm_report_register(const struct tsm_report_ops *ops, void *priv);
+int tsm_report_unregister(const struct tsm_report_ops *ops);
 #endif /* __TSM_H */