Merge tag 'for-net-2025-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

Luiz Augusto von Dentz says:

====================
bluetooth pull request for net:

 - btmtksdio: Check function enabled before doing close
 - btmtksdio: Do close if SDIO card removed without close
 - btusb: avoid NULL pointer dereference in skb_dequeue()
 - btintel_pcie: Avoid redundant buffer allocation
 - btintel_pcie: Add additional to checks to clear TX/RX paths
 - hci_conn: Fix not setting conn_timeout for Broadcast Receiver
 - hci_conn: Fix not setting timeout for BIG Create Sync

* tag 'for-net-2025-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
  Bluetooth: L2CAP: copy RX timestamp to new fragments
  Bluetooth: btintel_pcie: Add additional to checks to clear TX/RX paths
  Bluetooth: btmtksdio: Do close if SDIO card removed without close
  Bluetooth: btmtksdio: Check function enabled before doing close
  Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()
  Bluetooth: btintel_pcie: Avoid redundant buffer allocation
  Bluetooth: hci_conn: Fix not setting timeout for BIG Create Sync
  Bluetooth: hci_conn: Fix not setting conn_timeout for Broadcast Receiver
====================

Link: https://patch.msgid.link/20250425192412.1578759-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/bluetooth/btintel_pcie.c

@@ -957,8 +957,10 @@ static int btintel_pcie_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
 		/* This is a debug event that comes from IML and OP image when it
 		 * starts execution. There is no need pass this event to stack.
 		 */
-		if (skb->data[2] == 0x97)
+		if (skb->data[2] == 0x97) {
+			hci_recv_diag(hdev, skb);
 			return 0;
+		}
 	}
 
 	return hci_recv_frame(hdev, skb);
@@ -974,7 +976,6 @@ static int btintel_pcie_recv_frame(struct btintel_pcie_data *data,
 	u8 pkt_type;
 	u16 plen;
 	u32 pcie_pkt_type;
-	struct sk_buff *new_skb;
 	void *pdata;
 	struct hci_dev *hdev = data->hdev;
 
@@ -1051,24 +1052,20 @@ static int btintel_pcie_recv_frame(struct btintel_pcie_data *data,
 
 	bt_dev_dbg(hdev, "pkt_type: 0x%2.2x len: %u", pkt_type, plen);
 
-	new_skb = bt_skb_alloc(plen, GFP_ATOMIC);
-	if (!new_skb) {
-		bt_dev_err(hdev, "Failed to allocate memory for skb of len: %u",
-			   skb->len);
-		ret = -ENOMEM;
-		goto exit_error;
-	}
-
-	hci_skb_pkt_type(new_skb) = pkt_type;
-	skb_put_data(new_skb, skb->data, plen);
+	hci_skb_pkt_type(skb) = pkt_type;
 	hdev->stat.byte_rx += plen;
+	skb_trim(skb, plen);
 
 	if (pcie_pkt_type == BTINTEL_PCIE_HCI_EVT_PKT)
-		ret = btintel_pcie_recv_event(hdev, new_skb);
+		ret = btintel_pcie_recv_event(hdev, skb);
 	else
-		ret = hci_recv_frame(hdev, new_skb);
+		ret = hci_recv_frame(hdev, skb);
+	skb = NULL; /* skb is freed in the callee  */
 
 exit_error:
+	if (skb)
+		kfree_skb(skb);
+
 	if (ret)
 		hdev->stat.err_rx++;
 
@@ -1202,8 +1199,6 @@ static void btintel_pcie_rx_work(struct work_struct *work)
 	struct btintel_pcie_data *data = container_of(work,
 					struct btintel_pcie_data, rx_work);
 	struct sk_buff *skb;
-	int err;
-	struct hci_dev *hdev = data->hdev;
 
 	if (test_bit(BTINTEL_PCIE_HWEXP_INPROGRESS, &data->flags)) {
 		/* Unlike usb products, controller will not send hardware
@@ -1224,11 +1219,7 @@ static void btintel_pcie_rx_work(struct work_struct *work)
 
 	/* Process the sk_buf in queue and send to the HCI layer */
 	while ((skb = skb_dequeue(&data->rx_skb_q))) {
-		err = btintel_pcie_recv_frame(data, skb);
-		if (err)
-			bt_dev_err(hdev, "Failed to send received frame: %d",
-				   err);
-		kfree_skb(skb);
+		btintel_pcie_recv_frame(data, skb);
 	}
 }
 
@@ -1281,10 +1272,8 @@ static void btintel_pcie_msix_rx_handle(struct btintel_pcie_data *data)
 	bt_dev_dbg(hdev, "RXQ: cr_hia: %u  cr_tia: %u", cr_hia, cr_tia);
 
 	/* Check CR_TIA and CR_HIA for change */
-	if (cr_tia == cr_hia) {
-		bt_dev_warn(hdev, "RXQ: no new CD found");
+	if (cr_tia == cr_hia)
 		return;
-	}
 
 	rxq = &data->rxq;
 
@@ -1320,6 +1309,16 @@ static irqreturn_t btintel_pcie_msix_isr(int irq, void *data)
 	return IRQ_WAKE_THREAD;
 }
 
+static inline bool btintel_pcie_is_rxq_empty(struct btintel_pcie_data *data)
+{
+	return data->ia.cr_hia[BTINTEL_PCIE_RXQ_NUM] == data->ia.cr_tia[BTINTEL_PCIE_RXQ_NUM];
+}
+
+static inline bool btintel_pcie_is_txackq_empty(struct btintel_pcie_data *data)
+{
+	return data->ia.cr_tia[BTINTEL_PCIE_TXQ_NUM] == data->ia.cr_hia[BTINTEL_PCIE_TXQ_NUM];
+}
+
 static irqreturn_t btintel_pcie_irq_msix_handler(int irq, void *dev_id)
 {
 	struct msix_entry *entry = dev_id;
@@ -1351,12 +1350,18 @@ static irqreturn_t btintel_pcie_irq_msix_handler(int irq, void *dev_id)
 		btintel_pcie_msix_gp0_handler(data);
 
 	/* For TX */
-	if (intr_fh & BTINTEL_PCIE_MSIX_FH_INT_CAUSES_0)
+	if (intr_fh & BTINTEL_PCIE_MSIX_FH_INT_CAUSES_0) {
 		btintel_pcie_msix_tx_handle(data);
+		if (!btintel_pcie_is_rxq_empty(data))
+			btintel_pcie_msix_rx_handle(data);
+	}
 
 	/* For RX */
-	if (intr_fh & BTINTEL_PCIE_MSIX_FH_INT_CAUSES_1)
+	if (intr_fh & BTINTEL_PCIE_MSIX_FH_INT_CAUSES_1) {
 		btintel_pcie_msix_rx_handle(data);
+		if (!btintel_pcie_is_txackq_empty(data))
+			btintel_pcie_msix_tx_handle(data);
+	}
 
 	/*
 	 * Before sending the interrupt the HW disables it to prevent a nested

drivers/bluetooth/btmtksdio.c

@@ -723,6 +723,10 @@ static int btmtksdio_close(struct hci_dev *hdev)
 {
 	struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
 
+	/* Skip btmtksdio_close if BTMTKSDIO_FUNC_ENABLED isn't set */
+	if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
+		return 0;
+
 	sdio_claim_host(bdev->func);
 
 	/* Disable interrupt */
@@ -1443,11 +1447,15 @@ static void btmtksdio_remove(struct sdio_func *func)
 	if (!bdev)
 		return;
 
+	hdev = bdev->hdev;
+
+	/* Make sure to call btmtksdio_close before removing sdio card */
+	if (test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
+		btmtksdio_close(hdev);
+
 	/* Be consistent the state in btmtksdio_probe */
 	pm_runtime_get_noresume(bdev->dev);
 
-	hdev = bdev->hdev;
-
 	sdio_set_drvdata(func, NULL);
 	hci_unregister_dev(hdev);
 	hci_free_dev(hdev);

drivers/bluetooth/btusb.c

@@ -3010,22 +3010,16 @@ static void btusb_coredump_qca(struct hci_dev *hdev)
 		bt_dev_err(hdev, "%s: triggle crash failed (%d)", __func__, err);
 }
 
-/*
- * ==0: not a dump pkt.
- * < 0: fails to handle a dump pkt
- * > 0: otherwise.
- */
+/* Return: 0 on success, negative errno on failure. */
 static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb)
 {
-	int ret = 1;
+	int ret = 0;
 	u8 pkt_type;
 	u8 *sk_ptr;
 	unsigned int sk_len;
 	u16 seqno;
 	u32 dump_size;
 
-	struct hci_event_hdr *event_hdr;
-	struct hci_acl_hdr *acl_hdr;
 	struct qca_dump_hdr *dump_hdr;
 	struct btusb_data *btdata = hci_get_drvdata(hdev);
 	struct usb_device *udev = btdata->udev;
@@ -3035,30 +3029,14 @@ static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb)
 	sk_len = skb->len;
 
 	if (pkt_type == HCI_ACLDATA_PKT) {
-		acl_hdr = hci_acl_hdr(skb);
-		if (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE)
-			return 0;
 		sk_ptr += HCI_ACL_HDR_SIZE;
 		sk_len -= HCI_ACL_HDR_SIZE;
-		event_hdr = (struct hci_event_hdr *)sk_ptr;
-	} else {
-		event_hdr = hci_event_hdr(skb);
 	}
 
-	if ((event_hdr->evt != HCI_VENDOR_PKT)
-		|| (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE)))
-		return 0;
-
 	sk_ptr += HCI_EVENT_HDR_SIZE;
 	sk_len -= HCI_EVENT_HDR_SIZE;
 
 	dump_hdr = (struct qca_dump_hdr *)sk_ptr;
-	if ((sk_len < offsetof(struct qca_dump_hdr, data))
-		|| (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS)
-	    || (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
-		return 0;
-
-	/*it is dump pkt now*/
 	seqno = le16_to_cpu(dump_hdr->seqno);
 	if (seqno == 0) {
 		set_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
@@ -3132,17 +3110,84 @@ out:
 	return ret;
 }
 
+/* Return: true if the ACL packet is a dump packet, false otherwise. */
+static bool acl_pkt_is_dump_qca(struct hci_dev *hdev, struct sk_buff *skb)
+{
+	u8 *sk_ptr;
+	unsigned int sk_len;
+
+	struct hci_event_hdr *event_hdr;
+	struct hci_acl_hdr *acl_hdr;
+	struct qca_dump_hdr *dump_hdr;
+
+	sk_ptr = skb->data;
+	sk_len = skb->len;
+
+	acl_hdr = hci_acl_hdr(skb);
+	if (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE)
+		return false;
+
+	sk_ptr += HCI_ACL_HDR_SIZE;
+	sk_len -= HCI_ACL_HDR_SIZE;
+	event_hdr = (struct hci_event_hdr *)sk_ptr;
+
+	if ((event_hdr->evt != HCI_VENDOR_PKT) ||
+	    (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE)))
+		return false;
+
+	sk_ptr += HCI_EVENT_HDR_SIZE;
+	sk_len -= HCI_EVENT_HDR_SIZE;
+
+	dump_hdr = (struct qca_dump_hdr *)sk_ptr;
+	if ((sk_len < offsetof(struct qca_dump_hdr, data)) ||
+	    (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS) ||
+	    (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
+		return false;
+
+	return true;
+}
+
+/* Return: true if the event packet is a dump packet, false otherwise. */
+static bool evt_pkt_is_dump_qca(struct hci_dev *hdev, struct sk_buff *skb)
+{
+	u8 *sk_ptr;
+	unsigned int sk_len;
+
+	struct hci_event_hdr *event_hdr;
+	struct qca_dump_hdr *dump_hdr;
+
+	sk_ptr = skb->data;
+	sk_len = skb->len;
+
+	event_hdr = hci_event_hdr(skb);
+
+	if ((event_hdr->evt != HCI_VENDOR_PKT)
+	    || (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE)))
+		return false;
+
+	sk_ptr += HCI_EVENT_HDR_SIZE;
+	sk_len -= HCI_EVENT_HDR_SIZE;
+
+	dump_hdr = (struct qca_dump_hdr *)sk_ptr;
+	if ((sk_len < offsetof(struct qca_dump_hdr, data)) ||
+	    (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS) ||
+	    (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
+		return false;
+
+	return true;
+}
+
 static int btusb_recv_acl_qca(struct hci_dev *hdev, struct sk_buff *skb)
 {
-	if (handle_dump_pkt_qca(hdev, skb))
-		return 0;
+	if (acl_pkt_is_dump_qca(hdev, skb))
+		return handle_dump_pkt_qca(hdev, skb);
 	return hci_recv_frame(hdev, skb);
 }
 
 static int btusb_recv_evt_qca(struct hci_dev *hdev, struct sk_buff *skb)
 {
-	if (handle_dump_pkt_qca(hdev, skb))
-		return 0;
+	if (evt_pkt_is_dump_qca(hdev, skb))
+		return handle_dump_pkt_qca(hdev, skb);
 	return hci_recv_frame(hdev, skb);
 }
 

include/net/bluetooth/hci.h

@@ -1931,6 +1931,8 @@ struct hci_cp_le_pa_create_sync {
 	__u8      sync_cte_type;
 } __packed;
 
+#define HCI_OP_LE_PA_CREATE_SYNC_CANCEL	0x2045
+
 #define HCI_OP_LE_PA_TERM_SYNC		0x2046
 struct hci_cp_le_pa_term_sync {
 	__le16    handle;
@@ -2830,7 +2832,7 @@ struct hci_evt_le_create_big_complete {
 	__le16  bis_handle[];
 } __packed;
 
-#define HCI_EVT_LE_BIG_SYNC_ESTABILISHED 0x1d
+#define HCI_EVT_LE_BIG_SYNC_ESTABLISHED 0x1d
 struct hci_evt_le_big_sync_estabilished {
 	__u8    status;
 	__u8    handle;

include/net/bluetooth/hci_core.h

@@ -1113,10 +1113,8 @@ static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
 	return NULL;
 }
 
-static inline struct hci_conn *hci_conn_hash_lookup_sid(struct hci_dev *hdev,
-							__u8 sid,
-							bdaddr_t *dst,
-							__u8 dst_type)
+static inline struct hci_conn *
+hci_conn_hash_lookup_create_pa_sync(struct hci_dev *hdev)
 {
 	struct hci_conn_hash *h = &hdev->conn_hash;
 	struct hci_conn  *c;
@@ -1124,8 +1122,10 @@ static inline struct hci_conn *hci_conn_hash_lookup_sid(struct hci_dev *hdev,
 	rcu_read_lock();
 
 	list_for_each_entry_rcu(c, &h->list, list) {
-		if (c->type != ISO_LINK  || bacmp(&c->dst, dst) ||
-		    c->dst_type != dst_type || c->sid != sid)
+		if (c->type != ISO_LINK)
+			continue;
+
+		if (!test_bit(HCI_CONN_CREATE_PA_SYNC, &c->flags))
 			continue;
 
 		rcu_read_unlock();
@@ -1524,8 +1524,6 @@ bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 bool hci_iso_setup_path(struct hci_conn *conn);
 int hci_le_create_cis_pending(struct hci_dev *hdev);
-int hci_pa_create_sync_pending(struct hci_dev *hdev);
-int hci_le_big_create_sync_pending(struct hci_dev *hdev);
 int hci_conn_check_create_cis(struct hci_conn *conn);
 
 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
@@ -1566,9 +1564,9 @@ struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
 				 __u8 data_len, __u8 *data);
 struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
 		       __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
-int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
-			   struct bt_iso_qos *qos,
-			   __u16 sync_handle, __u8 num_bis, __u8 bis[]);
+int hci_conn_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
+			     struct bt_iso_qos *qos, __u16 sync_handle,
+			     __u8 num_bis, __u8 bis[]);
 int hci_conn_check_link_mode(struct hci_conn *conn);
 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,

include/net/bluetooth/hci_sync.h

@@ -185,3 +185,6 @@ int hci_connect_le_sync(struct hci_dev *hdev, struct hci_conn *conn);
 int hci_cancel_connect_sync(struct hci_dev *hdev, struct hci_conn *conn);
 int hci_le_conn_update_sync(struct hci_dev *hdev, struct hci_conn *conn,
 			    struct hci_conn_params *params);
+
+int hci_connect_pa_sync(struct hci_dev *hdev, struct hci_conn *conn);
+int hci_connect_big_sync(struct hci_dev *hdev, struct hci_conn *conn);

net/bluetooth/hci_conn.c

@@ -2064,95 +2064,6 @@ static int create_big_sync(struct hci_dev *hdev, void *data)
 	return hci_le_create_big(conn, &conn->iso_qos);
 }
 
-static void create_pa_complete(struct hci_dev *hdev, void *data, int err)
-{
-	bt_dev_dbg(hdev, "");
-
-	if (err)
-		bt_dev_err(hdev, "Unable to create PA: %d", err);
-}
-
-static bool hci_conn_check_create_pa_sync(struct hci_conn *conn)
-{
-	if (conn->type != ISO_LINK || conn->sid == HCI_SID_INVALID)
-		return false;
-
-	return true;
-}
-
-static int create_pa_sync(struct hci_dev *hdev, void *data)
-{
-	struct hci_cp_le_pa_create_sync cp = {0};
-	struct hci_conn *conn;
-	int err = 0;
-
-	hci_dev_lock(hdev);
-
-	rcu_read_lock();
-
-	/* The spec allows only one pending LE Periodic Advertising Create
-	 * Sync command at a time. If the command is pending now, don't do
-	 * anything. We check for pending connections after each PA Sync
-	 * Established event.
-	 *
-	 * BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
-	 * page 2493:
-	 *
-	 * If the Host issues this command when another HCI_LE_Periodic_
-	 * Advertising_Create_Sync command is pending, the Controller shall
-	 * return the error code Command Disallowed (0x0C).
-	 */
-	list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
-		if (test_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags))
-			goto unlock;
-	}
-
-	list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
-		if (hci_conn_check_create_pa_sync(conn)) {
-			struct bt_iso_qos *qos = &conn->iso_qos;
-
-			cp.options = qos->bcast.options;
-			cp.sid = conn->sid;
-			cp.addr_type = conn->dst_type;
-			bacpy(&cp.addr, &conn->dst);
-			cp.skip = cpu_to_le16(qos->bcast.skip);
-			cp.sync_timeout = cpu_to_le16(qos->bcast.sync_timeout);
-			cp.sync_cte_type = qos->bcast.sync_cte_type;
-
-			break;
-		}
-	}
-
-unlock:
-	rcu_read_unlock();
-
-	hci_dev_unlock(hdev);
-
-	if (bacmp(&cp.addr, BDADDR_ANY)) {
-		hci_dev_set_flag(hdev, HCI_PA_SYNC);
-		set_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags);
-
-		err = __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_CREATE_SYNC,
-					    sizeof(cp), &cp, HCI_CMD_TIMEOUT);
-		if (!err)
-			err = hci_update_passive_scan_sync(hdev);
-
-		if (err) {
-			hci_dev_clear_flag(hdev, HCI_PA_SYNC);
-			clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags);
-		}
-	}
-
-	return err;
-}
-
-int hci_pa_create_sync_pending(struct hci_dev *hdev)
-{
-	/* Queue start pa_create_sync and scan */
-	return hci_cmd_sync_queue(hdev, create_pa_sync,
-				  NULL, create_pa_complete);
-}
-
 struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
 				    __u8 dst_type, __u8 sid,
 				    struct bt_iso_qos *qos)
@@ -2167,97 +2078,18 @@ struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
 	conn->dst_type = dst_type;
 	conn->sid = sid;
 	conn->state = BT_LISTEN;
+	conn->conn_timeout = msecs_to_jiffies(qos->bcast.sync_timeout * 10);
 
 	hci_conn_hold(conn);
 
-	hci_pa_create_sync_pending(hdev);
+	hci_connect_pa_sync(hdev, conn);
 
 	return conn;
 }
 
-static bool hci_conn_check_create_big_sync(struct hci_conn *conn)
-{
-	if (!conn->num_bis)
-		return false;
-
-	return true;
-}
-
-static void big_create_sync_complete(struct hci_dev *hdev, void *data, int err)
-{
-	bt_dev_dbg(hdev, "");
-
-	if (err)
-		bt_dev_err(hdev, "Unable to create BIG sync: %d", err);
-}
-
-static int big_create_sync(struct hci_dev *hdev, void *data)
-{
-	DEFINE_FLEX(struct hci_cp_le_big_create_sync, pdu, bis, num_bis, 0x11);
-	struct hci_conn *conn;
-
-	rcu_read_lock();
-
-	pdu->num_bis = 0;
-
-	/* The spec allows only one pending LE BIG Create Sync command at
-	 * a time. If the command is pending now, don't do anything. We
-	 * check for pending connections after each BIG Sync Established
-	 * event.
-	 *
-	 * BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
-	 * page 2586:
-	 *
-	 * If the Host sends this command when the Controller is in the
-	 * process of synchronizing to any BIG, i.e. the HCI_LE_BIG_Sync_
-	 * Established event has not been generated, the Controller shall
-	 * return the error code Command Disallowed (0x0C).
-	 */
-	list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
-		if (test_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags))
-			goto unlock;
-	}
-
-	list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
-		if (hci_conn_check_create_big_sync(conn)) {
-			struct bt_iso_qos *qos = &conn->iso_qos;
-
-			set_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags);
-
-			pdu->handle = qos->bcast.big;
-			pdu->sync_handle = cpu_to_le16(conn->sync_handle);
-			pdu->encryption = qos->bcast.encryption;
-			memcpy(pdu->bcode, qos->bcast.bcode,
-			       sizeof(pdu->bcode));
-			pdu->mse = qos->bcast.mse;
-			pdu->timeout = cpu_to_le16(qos->bcast.timeout);
-			pdu->num_bis = conn->num_bis;
-			memcpy(pdu->bis, conn->bis, conn->num_bis);
-
-			break;
-		}
-	}
-
-unlock:
-	rcu_read_unlock();
-
-	if (!pdu->num_bis)
-		return 0;
-
-	return hci_send_cmd(hdev, HCI_OP_LE_BIG_CREATE_SYNC,
-			    struct_size(pdu, bis, pdu->num_bis), pdu);
-}
-
-int hci_le_big_create_sync_pending(struct hci_dev *hdev)
-{
-	/* Queue big_create_sync */
-	return hci_cmd_sync_queue_once(hdev, big_create_sync,
-				       NULL, big_create_sync_complete);
-}
-
-int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
-			   struct bt_iso_qos *qos,
-			   __u16 sync_handle, __u8 num_bis, __u8 bis[])
+int hci_conn_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
+			     struct bt_iso_qos *qos, __u16 sync_handle,
+			     __u8 num_bis, __u8 bis[])
 {
 	int err;
 
@@ -2274,9 +2106,10 @@ int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
 
 		hcon->num_bis = num_bis;
 		memcpy(hcon->bis, bis, num_bis);
+		hcon->conn_timeout = msecs_to_jiffies(qos->bcast.timeout * 10);
 	}
 
-	return hci_le_big_create_sync_pending(hdev);
+	return hci_connect_big_sync(hdev, hcon);
 }
 
 static void create_big_complete(struct hci_dev *hdev, void *data, int err)

net/bluetooth/hci_event.c

@@ -6378,8 +6378,7 @@ static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
 
 	hci_dev_clear_flag(hdev, HCI_PA_SYNC);
 
-	conn = hci_conn_hash_lookup_sid(hdev, ev->sid, &ev->bdaddr,
-					ev->bdaddr_type);
+	conn = hci_conn_hash_lookup_create_pa_sync(hdev);
 	if (!conn) {
 		bt_dev_err(hdev,
 			   "Unable to find connection for dst %pMR sid 0x%2.2x",
@@ -6418,9 +6417,6 @@ static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
 	}
 
 unlock:
-	/* Handle any other pending PA sync command */
-	hci_pa_create_sync_pending(hdev);
-
 	hci_dev_unlock(hdev);
 }
 
@@ -6932,7 +6928,7 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
 
-	if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
+	if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABLISHED,
 				flex_array_size(ev, bis, ev->num_bis)))
 		return;
 
@@ -7003,9 +6999,6 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 		}
 
 unlock:
-	/* Handle any other pending BIG sync command */
-	hci_le_big_create_sync_pending(hdev);
-
 	hci_dev_unlock(hdev);
 }
 
@@ -7127,8 +7120,8 @@ static const struct hci_le_ev {
 		     hci_le_create_big_complete_evt,
 		     sizeof(struct hci_evt_le_create_big_complete),
 		     HCI_MAX_EVENT_SIZE),
-	/* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
-	HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
+	/* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABLISHED] */
+	HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABLISHED,
 		     hci_le_big_sync_established_evt,
 		     sizeof(struct hci_evt_le_big_sync_estabilished),
 		     HCI_MAX_EVENT_SIZE),

net/bluetooth/hci_sync.c

@@ -2693,16 +2693,16 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
 
 	/* Force address filtering if PA Sync is in progress */
 	if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) {
-		struct hci_cp_le_pa_create_sync *sent;
+		struct hci_conn *conn;
 
-		sent = hci_sent_cmd_data(hdev, HCI_OP_LE_PA_CREATE_SYNC);
-		if (sent) {
+		conn = hci_conn_hash_lookup_create_pa_sync(hdev);
+		if (conn) {
 			struct conn_params pa;
 
 			memset(&pa, 0, sizeof(pa));
 
-			bacpy(&pa.addr, &sent->addr);
-			pa.addr_type = sent->addr_type;
+			bacpy(&pa.addr, &conn->dst);
+			pa.addr_type = conn->dst_type;
 
 			/* Clear first since there could be addresses left
 			 * behind.
@@ -6895,3 +6895,143 @@ int hci_le_conn_update_sync(struct hci_dev *hdev, struct hci_conn *conn,
 	return __hci_cmd_sync_status(hdev, HCI_OP_LE_CONN_UPDATE,
 				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
 }
+
+static void create_pa_complete(struct hci_dev *hdev, void *data, int err)
+{
+	bt_dev_dbg(hdev, "err %d", err);
+
+	if (!err)
+		return;
+
+	hci_dev_clear_flag(hdev, HCI_PA_SYNC);
+
+	if (err == -ECANCELED)
+		return;
+
+	hci_dev_lock(hdev);
+
+	hci_update_passive_scan_sync(hdev);
+
+	hci_dev_unlock(hdev);
+}
+
+static int hci_le_pa_create_sync(struct hci_dev *hdev, void *data)
+{
+	struct hci_cp_le_pa_create_sync cp;
+	struct hci_conn *conn = data;
+	struct bt_iso_qos *qos = &conn->iso_qos;
+	int err;
+
+	if (!hci_conn_valid(hdev, conn))
+		return -ECANCELED;
+
+	if (hci_dev_test_and_set_flag(hdev, HCI_PA_SYNC))
+		return -EBUSY;
+
+	/* Mark HCI_CONN_CREATE_PA_SYNC so hci_update_passive_scan_sync can
+	 * program the address in the allow list so PA advertisements can be
+	 * received.
+	 */
+	set_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags);
+
+	hci_update_passive_scan_sync(hdev);
+
+	memset(&cp, 0, sizeof(cp));
+	cp.options = qos->bcast.options;
+	cp.sid = conn->sid;
+	cp.addr_type = conn->dst_type;
+	bacpy(&cp.addr, &conn->dst);
+	cp.skip = cpu_to_le16(qos->bcast.skip);
+	cp.sync_timeout = cpu_to_le16(qos->bcast.sync_timeout);
+	cp.sync_cte_type = qos->bcast.sync_cte_type;
+
+	/* The spec allows only one pending LE Periodic Advertising Create
+	 * Sync command at a time so we forcefully wait for PA Sync Established
+	 * event since cmd_work can only schedule one command at a time.
+	 *
+	 * BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
+	 * page 2493:
+	 *
+	 * If the Host issues this command when another HCI_LE_Periodic_
+	 * Advertising_Create_Sync command is pending, the Controller shall
+	 * return the error code Command Disallowed (0x0C).
+	 */
+	err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_PA_CREATE_SYNC,
+				       sizeof(cp), &cp,
+				       HCI_EV_LE_PA_SYNC_ESTABLISHED,
+				       conn->conn_timeout, NULL);
+	if (err == -ETIMEDOUT)
+		__hci_cmd_sync_status(hdev, HCI_OP_LE_PA_CREATE_SYNC_CANCEL,
+				      0, NULL, HCI_CMD_TIMEOUT);
+
+	return err;
+}
+
+int hci_connect_pa_sync(struct hci_dev *hdev, struct hci_conn *conn)
+{
+	return hci_cmd_sync_queue_once(hdev, hci_le_pa_create_sync, conn,
+				       create_pa_complete);
+}
+
+static void create_big_complete(struct hci_dev *hdev, void *data, int err)
+{
+	struct hci_conn *conn = data;
+
+	bt_dev_dbg(hdev, "err %d", err);
+
+	if (err == -ECANCELED)
+		return;
+
+	if (hci_conn_valid(hdev, conn))
+		clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags);
+}
+
+static int hci_le_big_create_sync(struct hci_dev *hdev, void *data)
+{
+	DEFINE_FLEX(struct hci_cp_le_big_create_sync, cp, bis, num_bis, 0x11);
+	struct hci_conn *conn = data;
+	struct bt_iso_qos *qos = &conn->iso_qos;
+	int err;
+
+	if (!hci_conn_valid(hdev, conn))
+		return -ECANCELED;
+
+	set_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags);
+
+	memset(cp, 0, sizeof(*cp));
+	cp->handle = qos->bcast.big;
+	cp->sync_handle = cpu_to_le16(conn->sync_handle);
+	cp->encryption = qos->bcast.encryption;
+	memcpy(cp->bcode, qos->bcast.bcode, sizeof(cp->bcode));
+	cp->mse = qos->bcast.mse;
+	cp->timeout = cpu_to_le16(qos->bcast.timeout);
+	cp->num_bis = conn->num_bis;
+	memcpy(cp->bis, conn->bis, conn->num_bis);
+
+	/* The spec allows only one pending LE BIG Create Sync command at
+	 * a time, so we forcefully wait for BIG Sync Established event since
+	 * cmd_work can only schedule one command at a time.
+	 *
+	 * BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
+	 * page 2586:
+	 *
+	 * If the Host sends this command when the Controller is in the
+	 * process of synchronizing to any BIG, i.e. the HCI_LE_BIG_Sync_
+	 * Established event has not been generated, the Controller shall
+	 * return the error code Command Disallowed (0x0C).
+	 */
+	err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_BIG_CREATE_SYNC,
+				       struct_size(cp, bis, cp->num_bis), cp,
+				       HCI_EVT_LE_BIG_SYNC_ESTABLISHED,
+				       conn->conn_timeout, NULL);
+	if (err == -ETIMEDOUT)
+		hci_le_big_terminate_sync(hdev, cp->handle);
+
+	return err;
+}
+
+int hci_connect_big_sync(struct hci_dev *hdev, struct hci_conn *conn)
+{
+	return hci_cmd_sync_queue_once(hdev, hci_le_big_create_sync, conn,
+				       create_big_complete);
+}

net/bluetooth/iso.c

@@ -1462,14 +1462,13 @@ static void iso_conn_big_sync(struct sock *sk)
 	lock_sock(sk);
 
 	if (!test_and_set_bit(BT_SK_BIG_SYNC, &iso_pi(sk)->flags)) {
-		err = hci_le_big_create_sync(hdev, iso_pi(sk)->conn->hcon,
-					     &iso_pi(sk)->qos,
-					     iso_pi(sk)->sync_handle,
-					     iso_pi(sk)->bc_num_bis,
-					     iso_pi(sk)->bc_bis);
+		err = hci_conn_big_create_sync(hdev, iso_pi(sk)->conn->hcon,
+					       &iso_pi(sk)->qos,
+					       iso_pi(sk)->sync_handle,
+					       iso_pi(sk)->bc_num_bis,
+					       iso_pi(sk)->bc_bis);
 		if (err)
-			bt_dev_err(hdev, "hci_le_big_create_sync: %d",
-				   err);
+			bt_dev_err(hdev, "hci_big_create_sync: %d", err);
 	}
 
 	release_sock(sk);
@@ -1922,7 +1921,7 @@ static void iso_conn_ready(struct iso_conn *conn)
 					      hcon);
 		} else if (test_bit(HCI_CONN_BIG_SYNC_FAILED, &hcon->flags)) {
 			ev = hci_recv_event_data(hcon->hdev,
-						 HCI_EVT_LE_BIG_SYNC_ESTABILISHED);
+						 HCI_EVT_LE_BIG_SYNC_ESTABLISHED);
 
 			/* Get reference to PA sync parent socket, if it exists */
 			parent = iso_get_sock(&hcon->src, &hcon->dst,
@@ -2113,12 +2112,11 @@ int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
 
 			if (!test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags) &&
 			    !test_and_set_bit(BT_SK_BIG_SYNC, &iso_pi(sk)->flags)) {
-				err = hci_le_big_create_sync(hdev,
-							     hcon,
-							     &iso_pi(sk)->qos,
-							     iso_pi(sk)->sync_handle,
-							     iso_pi(sk)->bc_num_bis,
-							     iso_pi(sk)->bc_bis);
+				err = hci_conn_big_create_sync(hdev, hcon,
+							       &iso_pi(sk)->qos,
+							       iso_pi(sk)->sync_handle,
+							       iso_pi(sk)->bc_num_bis,
+							       iso_pi(sk)->bc_bis);
 				if (err) {
 					bt_dev_err(hdev, "hci_le_big_create_sync: %d",
 						   err);

net/bluetooth/l2cap_core.c

@@ -7415,6 +7415,9 @@ static int l2cap_recv_frag(struct l2cap_conn *conn, struct sk_buff *skb,
 			return -ENOMEM;
 		/* Init rx_len */
 		conn->rx_len = len;
+
+		skb_set_delivery_time(conn->rx_skb, skb->tstamp,
+				      skb->tstamp_type);
 	}
 
 	/* Copy as much as the rx_skb can hold */