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nvmet-auth: update sc_c in target host hash calculation

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Commit 7e091add9c "nvme-auth: update sc_c in host response" added
the sc_c variable to the dhchap queue context structure which is
appropriately set during negotiate and then used in the host response.

This breaks secure concat connections with a Linux target as the target
code wasn't updated at the same time. This patch fixes this by adding a
new sc_c variable to the host hash calculations.

Fixes: 7e091add9c ("nvme-auth: update sc_c in host response")
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Reviewed-by: Martin George <marting@netapp.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Alistair Francis
2025-11-07 09:17:11 +10:00
committed by Keith Busch
parent 03b3bcd319
commit 159de7a825
3 changed files with 4 additions and 2 deletions
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4
drivers/nvme/target/auth.c
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@@ -298,7 +298,7 @@ int nvmet_auth_host_hash(struct nvmet_req *req, u8 *response,
const char *hash_name;
u8 *challenge = req->sq->dhchap_c1;
struct nvme_dhchap_key *transformed_key;
u8 buf[4], sc_c = ctrl->concat ? 1 : 0;
u8 buf[4];
int ret;
hash_name = nvme_auth_hmac_name(ctrl->shash_id);
@@ -367,7 +367,7 @@ int nvmet_auth_host_hash(struct nvmet_req *req, u8 *response,
ret = crypto_shash_update(shash, buf, 2);
if (ret)
goto out;
*buf = sc_c;
*buf = req->sq->sc_c;
ret = crypto_shash_update(shash, buf, 1);
if (ret)
goto out;