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nvme-auth: update sc_c in host response

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The sc_c field is currently not updated in the host response to the
controller challenge leading to failures while attempting secure
channel concatenation. Fix this by adding a new sc_c variable to the
dhchap queue context structure which is appropriately set during
negotiate and then used in the host response.

Fixes: e88a7595b5 ("nvme-tcp: request secure channel concatenation")
Signed-off-by: Martin George <marting@netapp.com>
Signed-off-by: Prashanth Adurthi <prashana@netapp.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Martin George
2025-09-08 22:54:57 +05:30
committed by Keith Busch
parent bb642e2d30
commit 7e091add9c
1 changed files with 5 additions and 1 deletions
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6
drivers/nvme/host/auth.c
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@@ -36,6 +36,7 @@ struct nvme_dhchap_queue_context {
u8 status;
u8 dhgroup_id;
u8 hash_id;
u8 sc_c;
size_t hash_len;
u8 c1[64];
u8 c2[64];
@@ -154,6 +155,8 @@ static int nvme_auth_set_dhchap_negotiate_data(struct nvme_ctrl *ctrl,
data->auth_protocol[0].dhchap.idlist[34] = NVME_AUTH_DHGROUP_6144;
data->auth_protocol[0].dhchap.idlist[35] = NVME_AUTH_DHGROUP_8192;
chap->sc_c = data->sc_c;
return size;
}
@@ -489,7 +492,7 @@ static int nvme_auth_dhchap_setup_host_response(struct nvme_ctrl *ctrl,
ret = crypto_shash_update(shash, buf, 2);
if (ret)
goto out;
memset(buf, 0, sizeof(buf));
*buf = chap->sc_c;
ret = crypto_shash_update(shash, buf, 1);
if (ret)
goto out;
@@ -500,6 +503,7 @@ static int nvme_auth_dhchap_setup_host_response(struct nvme_ctrl *ctrl,
strlen(ctrl->opts->host->nqn));
if (ret)
goto out;
memset(buf, 0, sizeof(buf));
ret = crypto_shash_update(shash, buf, 1);
if (ret)
goto out;