linux-kernel - [PATCH v0 3/8] crypto: hbk flags & info added to the tfm

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Date:   Thu,  6 Oct 2022 18:38:32 +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 3/8] crypto: hbk flags & info added to the tfm

Consumer of the kernel crypto api, after allocating
the transformation (tfm), sets the:
- flag 'is_hbk'
- structure 'struct hw_bound_key_info hbk_info'
based on the type of key, the consumer is using.

This helps:

- This helps to influence the core processing logic
  for the encapsulated algorithm.
- This flag is set by the consumer after allocating
  the tfm and before calling the function crypto_xxx_setkey().

Signed-off-by: Pankaj Gupta <pankaj.gupta@....com>
---
 include/linux/crypto.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 2324ab6f1846..cd476f8a1cb4 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -19,6 +19,7 @@
 #include <linux/refcount.h>
 #include <linux/slab.h>
 #include <linux/completion.h>
+#include <linux/hw_bound_key.h>
 
 /*
  * Autoloaded crypto modules should only use a prefixed name to avoid allowing
@@ -639,6 +640,10 @@ struct crypto_tfm {
 
 	u32 crt_flags;
 
+	unsigned int is_hbk;
+
+	struct hw_bound_key_info hbk_info;
+
 	int node;
 	
 	void (*exit)(struct crypto_tfm *tfm);
-- 
2.17.1