[PATCH v4 1/2] nvme: Add the DHCHAP maximum HD IDs

alistair23
2026-03-20T00:21:19Z

From: Alistair Francis <alistair.francis@wdc.com>

In preperation for using DHCHAP length in upcoming host and target
patches let's add the hash and diffie-hellman ID length macros.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
v4:
- New patch

include/linux/nvme.h | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 655d194f8e72..b9d3dbe2564d 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -2332,4 +2332,8 @@ enum nvme_pr_change_ptpl {

#define NVME_PR_IGNORE_KEY (1 << 3)

+/* Section 8.3.4.5.2 of the NVMe 2.1 */
+#define NVME_AUTH_DHCHAP_MAX_HASH_IDS 30
+#define NVME_AUTH_DHCHAP_MAX_DH_IDS 30
+
#endif /* _LINUX_NVME_H */
--
2.53.0