linux-kernel - [PATCH v3 1/4] nvmet-tcp: Don't error if TLS is enabed on a reset

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Message-ID: <20251114045850.1898865-2-alistair.francis@wdc.com>
Date: Fri, 14 Nov 2025 14:58:47 +1000
From: alistair23@...il.com
To: kbusch@...nel.org,
	axboe@...nel.dk,
	hch@....de,
	sagi@...mberg.me,
	hare@...e.de,
	kch@...dia.com,
	linux-nvme@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
	alistair23@...il.com,
	Alistair Francis <alistair.francis@....com>,
	Wilfred Mallawa <wilfred.mallawa@....com>
Subject: [PATCH v3 1/4] nvmet-tcp: Don't error if TLS is enabed on a reset

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

If the host sends a AUTH_Negotiate Message on the admin queue with
REPLACETLSPSK set then we expect and require a TLS connection and
shouldn't report an error if TLS is enabled.

This change only enforces the nvmet_queue_tls_keyid() check if we aren't
resetting the negotiation.

Signed-off-by: Alistair Francis <alistair.francis@....com>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@....com>
Reviewed-by: Christoph Hellwig <hch@....de>
Reviewed-by: Hannes Reinecke <hare@...e.de>
---
v3:
 - No change
v2:
 - Fixup long line

 drivers/nvme/target/auth.c             | 4 ++--
 drivers/nvme/target/core.c             | 2 +-
 drivers/nvme/target/fabrics-cmd-auth.c | 3 ++-
 drivers/nvme/target/nvmet.h            | 4 ++--
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/nvme/target/auth.c b/drivers/nvme/target/auth.c
index 300d5e032f6d..58d80fc72fda 100644
--- a/drivers/nvme/target/auth.c
+++ b/drivers/nvme/target/auth.c
@@ -140,7 +140,7 @@ int nvmet_setup_dhgroup(struct nvmet_ctrl *ctrl, u8 dhgroup_id)
 	return ret;
 }
 
-u8 nvmet_setup_auth(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq)
+u8 nvmet_setup_auth(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq, bool reset)
 {
 	int ret = 0;
 	struct nvmet_host_link *p;
@@ -166,7 +166,7 @@ u8 nvmet_setup_auth(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq)
 		goto out_unlock;
 	}
 
-	if (nvmet_queue_tls_keyid(sq)) {
+	if (!reset && nvmet_queue_tls_keyid(sq)) {
 		pr_debug("host %s tls enabled\n", ctrl->hostnqn);
 		goto out_unlock;
 	}
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 5d7d483bfbe3..bd9746715ffc 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1689,7 +1689,7 @@ struct nvmet_ctrl *nvmet_alloc_ctrl(struct nvmet_alloc_ctrl_args *args)
 	if (args->hostid)
 		uuid_copy(&ctrl->hostid, args->hostid);
 
-	dhchap_status = nvmet_setup_auth(ctrl, args->sq);
+	dhchap_status = nvmet_setup_auth(ctrl, args->sq, false);
 	if (dhchap_status) {
 		pr_err("Failed to setup authentication, dhchap status %u\n",
 		       dhchap_status);
diff --git a/drivers/nvme/target/fabrics-cmd-auth.c b/drivers/nvme/target/fabrics-cmd-auth.c
index 5946681cb0e3..2e828f7717ad 100644
--- a/drivers/nvme/target/fabrics-cmd-auth.c
+++ b/drivers/nvme/target/fabrics-cmd-auth.c
@@ -293,7 +293,8 @@ void nvmet_execute_auth_send(struct nvmet_req *req)
 			pr_debug("%s: ctrl %d qid %d reset negotiation\n",
 				 __func__, ctrl->cntlid, req->sq->qid);
 			if (!req->sq->qid) {
-				dhchap_status = nvmet_setup_auth(ctrl, req->sq);
+				dhchap_status = nvmet_setup_auth(ctrl, req->sq,
+								 true);
 				if (dhchap_status) {
 					pr_err("ctrl %d qid 0 failed to setup re-authentication\n",
 					       ctrl->cntlid);
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index f3b09f4099f0..20be2fe43307 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -896,7 +896,7 @@ void nvmet_execute_auth_receive(struct nvmet_req *req);
 int nvmet_auth_set_key(struct nvmet_host *host, const char *secret,
 		       bool set_ctrl);
 int nvmet_auth_set_host_hash(struct nvmet_host *host, const char *hash);
-u8 nvmet_setup_auth(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq);
+u8 nvmet_setup_auth(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq, bool reset);
 void nvmet_auth_sq_init(struct nvmet_sq *sq);
 void nvmet_destroy_auth(struct nvmet_ctrl *ctrl);
 void nvmet_auth_sq_free(struct nvmet_sq *sq);
@@ -917,7 +917,7 @@ int nvmet_auth_ctrl_sesskey(struct nvmet_req *req,
 void nvmet_auth_insert_psk(struct nvmet_sq *sq);
 #else
 static inline u8 nvmet_setup_auth(struct nvmet_ctrl *ctrl,
-				  struct nvmet_sq *sq)
+				  struct nvmet_sq *sq, bool reset)
 {
 	return 0;
 }
-- 
2.51.1