linux-kernel - [PATCH v0 1/8] hw-bound-key: introducing the generic structure

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Date:   Thu,  6 Oct 2022 18:38:30 +0530
From:   Pankaj Gupta <pankaj.gupta@....com>
To:     jarkko@...nel.org, a.fatoum@...gutronix.de, gilad@...yossef.com,
        Jason@...c4.com, jejb@...ux.ibm.com, zohar@...ux.ibm.com,
        dhowells@...hat.com, sumit.garg@...aro.org, david@...ma-star.at,
        michael@...le.cc, john.ernberg@...ia.se, jmorris@...ei.org,
        serge@...lyn.com, herbert@...dor.apana.org.au, davem@...emloft.net,
        j.luebbe@...gutronix.de, ebiggers@...nel.org, richard@....at,
        keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, sahil.malhotra@....com,
        kshitiz.varshney@....com, horia.geanta@....com, V.Sethi@....com
Cc:     Pankaj Gupta <pankaj.gupta@....com>
Subject: [PATCH v0 1/8] hw-bound-key: introducing the generic structure

Hardware bound keys buffer has additional information,
that will be accessed using this new structure.

structure members are:
- flags, flags for hardware specific information.
- key_sz, size of the plain key.

Signed-off-by: Pankaj Gupta <pankaj.gupta@....com>
---
 include/linux/hw_bound_key.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 include/linux/hw_bound_key.h

diff --git a/include/linux/hw_bound_key.h b/include/linux/hw_bound_key.h
new file mode 100644
index 000000000000..e7f152410438
--- /dev/null
+++ b/include/linux/hw_bound_key.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright 2022 NXP
+ * Author: Pankaj Gupta <pankaj.gupta@....com>
+ */
+
+#ifndef _HW_BOUND_KEY_H
+#define _HW_BOUND_KEY_H
+
+#include "types.h"
+
+struct hw_bound_key_info {
+	/* Key types specific to the hw. [Implementation Defined]
+	 */
+	uint8_t flags;
+	uint8_t reserved;
+	/* Plain key size.
+	 */
+	uint16_t key_sz;
+};
+
+#define set_hbk_info(hbk_info, hw_flags, key_len) do {\
+	hbk_info->flags = hw_flags;\
+	hbk_info->key_sz = key_len;\
+} while (0)
+
+#endif /* _HW_BOUND_KEY_H */
-- 
2.17.1