From: Brian Gix <brian.gix@intel.com>
Date: Wed, 27 Oct 2021 16:58:49 -0700
Subject: Bluetooth: hci_sync: Convert MGMT_OP_SET_SECURE_CONN
Patch-mainline: v5.17-rc1
Git-commit: 2f2eb0c9de2eb69969aaf04feffb69310d3804b2
References: jsc#PED-1407

Synchronous version of MGMT_OP_SET_SECURE_CONN.

Signed-off-by: Brian Gix <brian.gix@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 include/net/bluetooth/hci_sync.h |    1 
 net/bluetooth/hci_sync.c         |   18 +++++++++-
 net/bluetooth/mgmt.c             |   66 ++++++++++++++++++---------------------
 3 files changed, 49 insertions(+), 36 deletions(-)

--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -69,6 +69,7 @@ int hci_update_passive_scan_sync(struct
 int hci_update_passive_scan(struct hci_dev *hdev);
 int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle);
 int hci_read_tx_power_sync(struct hci_dev *hdev, __le16 handle, u8 type);
+int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val);
 
 int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable);
 int hci_update_scan_sync(struct hci_dev *hdev);
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -2104,13 +2104,27 @@ int hci_update_passive_scan(struct hci_d
 	return hci_cmd_sync_queue(hdev, update_passive_scan_sync, NULL, NULL);
 }
 
-static int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val)
+int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val)
 {
+	int err;
+
 	if (!bredr_sc_enabled(hdev) || lmp_host_sc_capable(hdev))
 		return 0;
 
-	return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
+	err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
 				    sizeof(val), &val, HCI_CMD_TIMEOUT);
+
+	if (!err) {
+		if (val) {
+			hdev->features[1][0] |= LMP_HOST_SC;
+			hci_dev_set_flag(hdev, HCI_SC_ENABLED);
+		} else {
+			hdev->features[1][0] &= ~LMP_HOST_SC;
+			hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
+		}
+	}
+
+	return err;
 }
 
 static int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -6094,23 +6094,18 @@ unlock:
 	return err;
 }
 
-static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
+static void set_secure_conn_complete(struct hci_dev *hdev, void *data, int err)
 {
-	struct mgmt_pending_cmd *cmd;
+	struct mgmt_pending_cmd *cmd = data;
 	struct mgmt_mode *cp;
 
-	bt_dev_dbg(hdev, "status %u", status);
-
-	hci_dev_lock(hdev);
+	bt_dev_dbg(hdev, "err %d", err);
 
-	cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev);
-	if (!cmd)
-		goto unlock;
+	if (err) {
+		u8 mgmt_err = mgmt_status(err);
 
-	if (status) {
-		mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
-			        mgmt_status(status));
-		goto remove;
+		mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
+		goto done;
 	}
 
 	cp = cmd->param;
@@ -6130,13 +6125,23 @@ static void sc_enable_complete(struct hc
 		break;
 	}
 
-	send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev);
+	send_settings_rsp(cmd->sk, cmd->opcode, hdev);
 	new_settings(hdev, cmd->sk);
 
-remove:
-	mgmt_pending_remove(cmd);
-unlock:
-	hci_dev_unlock(hdev);
+done:
+	mgmt_pending_free(cmd);
+}
+
+static int set_secure_conn_sync(struct hci_dev *hdev, void *data)
+{
+	struct mgmt_pending_cmd *cmd = data;
+	struct mgmt_mode *cp = cmd->param;
+	u8 val = !!cp->val;
+
+	/* Force write of val */
+	hci_dev_set_flag(hdev, HCI_SC_ENABLED);
+
+	return hci_write_sc_support_sync(hdev, val);
 }
 
 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
@@ -6144,7 +6149,6 @@ static int set_secure_conn(struct sock *
 {
 	struct mgmt_mode *cp = data;
 	struct mgmt_pending_cmd *cmd;
-	struct hci_request req;
 	u8 val;
 	int err;
 
@@ -6163,7 +6167,7 @@ static int set_secure_conn(struct sock *
 
 	if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
 		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
-				  MGMT_STATUS_INVALID_PARAMS);
+				       MGMT_STATUS_INVALID_PARAMS);
 
 	hci_dev_lock(hdev);
 
@@ -6194,12 +6198,6 @@ static int set_secure_conn(struct sock *
 		goto failed;
 	}
 
-	if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
-		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
-				      MGMT_STATUS_BUSY);
-		goto failed;
-	}
-
 	val = !!cp->val;
 
 	if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
@@ -6208,18 +6206,18 @@ static int set_secure_conn(struct sock *
 		goto failed;
 	}
 
-	cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
-	if (!cmd) {
+	cmd = mgmt_pending_new(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
+	if (!cmd)
 		err = -ENOMEM;
-		goto failed;
-	}
+	else
+		err = hci_cmd_sync_queue(hdev, set_secure_conn_sync, cmd,
+					 set_secure_conn_complete);
 
-	hci_req_init(&req, hdev);
-	hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
-	err = hci_req_run(&req, sc_enable_complete);
 	if (err < 0) {
-		mgmt_pending_remove(cmd);
-		goto failed;
+		mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
+				MGMT_STATUS_FAILED);
+		if (cmd)
+			mgmt_pending_free(cmd);
 	}
 
 failed: