From 9100a28c8bb4270744942cf834efcd80f1acda7d Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@kernel.org>
Date: Sun, 1 Mar 2026 23:59:39 -0800
Subject: nvme-auth: add NVME_AUTH_MAX_DIGEST_SIZE constant

Define a NVME_AUTH_MAX_DIGEST_SIZE constant and use it in the
appropriate places.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
---
 include/linux/nvme.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'include')

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 655d194f8e72..edfebbce6745 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -1837,6 +1837,11 @@ enum {
 	NVME_AUTH_HASH_INVALID	= 0xff,
 };
 
+/* Maximum digest size for any NVME_AUTH_HASH_* value */
+enum {
+	NVME_AUTH_MAX_DIGEST_SIZE = 64,
+};
+
 /* Defined Diffie-Hellman group identifiers for DH-HMAC-CHAP authentication */
 enum {
 	NVME_AUTH_DHGROUP_NULL		= 0x00,
-- 
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