Merge tag 'for-net-2024-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

Luiz Augusto von Dentz says:

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

 - MGMT: Add error handling to pair_device()
 - HCI: Invert LE State quirk to be opt-out rather then opt-in
 - hci_core: Fix LE quote calculation
 - SMP: Fix assumption of Central always being Initiator

* tag 'for-net-2024-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
  Bluetooth: MGMT: Add error handling to pair_device()
  Bluetooth: SMP: Fix assumption of Central always being Initiator
  Bluetooth: hci_core: Fix LE quote calculation
  Bluetooth: HCI: Invert LE State quirk to be opt-out rather then opt-in
====================

Link: https://patch.msgid.link/20240815171950.1082068-1-luiz.dentz@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/bluetooth/btintel.c

@@ -2945,9 +2945,6 @@ static int btintel_setup_combined(struct hci_dev *hdev)
 					       INTEL_ROM_LEGACY_NO_WBS_SUPPORT))
 				set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED,
 					&hdev->quirks);
-			if (ver.hw_variant == 0x08 && ver.fw_variant == 0x22)
-				set_bit(HCI_QUIRK_VALID_LE_STATES,
-					&hdev->quirks);
 
 			err = btintel_legacy_rom_setup(hdev, &ver);
 			break;
@@ -2956,7 +2953,6 @@ static int btintel_setup_combined(struct hci_dev *hdev)
 		case 0x12:      /* ThP */
 		case 0x13:      /* HrP */
 		case 0x14:      /* CcP */
-			set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
 			fallthrough;
 		case 0x0c:	/* WsP */
 			/* Apply the device specific HCI quirks
@@ -3048,9 +3044,6 @@ static int btintel_setup_combined(struct hci_dev *hdev)
 		/* These variants don't seem to support LE Coded PHY */
 		set_bit(HCI_QUIRK_BROKEN_LE_CODED, &hdev->quirks);
 
-		/* Set Valid LE States quirk */
-		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
-
 		/* Setup MSFT Extension support */
 		btintel_set_msft_opcode(hdev, ver.hw_variant);
 
@@ -3076,9 +3069,6 @@ static int btintel_setup_combined(struct hci_dev *hdev)
 		 */
 		set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
 
-		/* Apply LE States quirk from solar onwards */
-		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
-
 		/* Setup MSFT Extension support */
 		btintel_set_msft_opcode(hdev,
 					INTEL_HW_VARIANT(ver_tlv.cnvi_bt));

drivers/bluetooth/btintel_pcie.c

@@ -1180,9 +1180,6 @@ static int btintel_pcie_setup(struct hci_dev *hdev)
 		 */
 		set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
 
-		/* Apply LE States quirk from solar onwards */
-		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
-
 		/* Setup MSFT Extension support */
 		btintel_set_msft_opcode(hdev,
 					INTEL_HW_VARIANT(ver_tlv.cnvi_bt));

drivers/bluetooth/btmtksdio.c

@@ -1148,9 +1148,6 @@ static int btmtksdio_setup(struct hci_dev *hdev)
 			}
 		}
 
-		/* Valid LE States quirk for MediaTek 7921 */
-		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
-
 		break;
 	case 0x7663:
 	case 0x7668:

drivers/bluetooth/btrtl.c

@@ -1287,7 +1287,6 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
 	case CHIP_ID_8852C:
 	case CHIP_ID_8851B:
 	case CHIP_ID_8852BT:
-		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
 		set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
 
 		/* RTL8852C needs to transmit mSBC data continuously without

drivers/bluetooth/btusb.c

@@ -3956,8 +3956,8 @@ static int btusb_probe(struct usb_interface *intf,
 	if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
 		set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
 
-	if (id->driver_info & BTUSB_VALID_LE_STATES)
-		set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
+	if (!(id->driver_info & BTUSB_VALID_LE_STATES))
+		set_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks);
 
 	if (id->driver_info & BTUSB_DIGIANSWER) {
 		data->cmdreq_type = USB_TYPE_VENDOR;

drivers/bluetooth/hci_qca.c

@@ -2474,8 +2474,8 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 			set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED,
 				&hdev->quirks);
 
-		if (data->capabilities & QCA_CAP_VALID_LE_STATES)
-			set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
+		if (!(data->capabilities & QCA_CAP_VALID_LE_STATES))
+			set_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks);
 	}
 
 	return 0;

drivers/bluetooth/hci_vhci.c

@@ -425,8 +425,6 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
 	if (opcode & 0x80)
 		set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
 
-	set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
-
 	if (hci_register_dev(hdev) < 0) {
 		BT_ERR("Can't register HCI device");
 		hci_free_dev(hdev);

include/net/bluetooth/hci.h

@@ -206,14 +206,17 @@ enum {
 	 */
 	HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED,
 
-	/* When this quirk is set, the controller has validated that
-	 * LE states reported through the HCI_LE_READ_SUPPORTED_STATES are
-	 * valid.  This mechanism is necessary as many controllers have
-	 * been seen has having trouble initiating a connectable
-	 * advertisement despite the state combination being reported as
-	 * supported.
+	/* When this quirk is set, the LE states reported through the
+	 * HCI_LE_READ_SUPPORTED_STATES are invalid/broken.
+	 *
+	 * This mechanism is necessary as many controllers have been seen has
+	 * having trouble initiating a connectable advertisement despite the
+	 * state combination being reported as supported.
+	 *
+	 * This quirk can be set before hci_register_dev is called or
+	 * during the hdev->setup vendor callback.
 	 */
-	HCI_QUIRK_VALID_LE_STATES,
+	HCI_QUIRK_BROKEN_LE_STATES,
 
 	/* When this quirk is set, then erroneous data reporting
 	 * is ignored. This is mainly due to the fact that the HCI

include/net/bluetooth/hci_core.h

@@ -825,7 +825,7 @@ extern struct mutex hci_cb_list_lock;
 	} while (0)
 
 #define hci_dev_le_state_simultaneous(hdev) \
-	(test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
+	(!test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) && \
 	 (hdev->le_states[4] & 0x08) &&	/* Central */ \
 	 (hdev->le_states[4] & 0x40) &&	/* Peripheral */ \
 	 (hdev->le_states[3] & 0x10))	/* Simultaneous */

net/bluetooth/hci_core.c

@@ -3664,19 +3664,19 @@ static void hci_sched_le(struct hci_dev *hdev)
 {
 	struct hci_chan *chan;
 	struct sk_buff *skb;
-	int quote, cnt, tmp;
+	int quote, *cnt, tmp;
 
 	BT_DBG("%s", hdev->name);
 
 	if (!hci_conn_num(hdev, LE_LINK))
 		return;
 
-	cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt;
+	cnt = hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt;
 
-	__check_timeout(hdev, cnt, LE_LINK);
+	__check_timeout(hdev, *cnt, LE_LINK);
 
-	tmp = cnt;
-	while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, &quote))) {
+	tmp = *cnt;
+	while (*cnt && (chan = hci_chan_sent(hdev, LE_LINK, &quote))) {
 		u32 priority = (skb_peek(&chan->data_q))->priority;
 		while (quote-- && (skb = skb_peek(&chan->data_q))) {
 			BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
@@ -3691,7 +3691,7 @@ static void hci_sched_le(struct hci_dev *hdev)
 			hci_send_frame(hdev, skb);
 			hdev->le_last_tx = jiffies;
 
-			cnt--;
+			(*cnt)--;
 			chan->sent++;
 			chan->conn->sent++;
 
@@ -3701,12 +3701,7 @@ static void hci_sched_le(struct hci_dev *hdev)
 		}
 	}
 
-	if (hdev->le_pkts)
-		hdev->le_cnt = cnt;
-	else
-		hdev->acl_cnt = cnt;
-
-	if (cnt != tmp)
+	if (*cnt != tmp)
 		hci_prio_recalculate(hdev, LE_LINK);
 }
 

net/bluetooth/hci_event.c

@@ -5920,7 +5920,7 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
 	 * while we have an existing one in peripheral role.
 	 */
 	if (hdev->conn_hash.le_num_peripheral > 0 &&
-	    (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
+	    (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) ||
 	     !(hdev->le_states[3] & 0x10)))
 		return NULL;
 

net/bluetooth/mgmt.c

@@ -3456,6 +3456,10 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 		 * will be kept and this function does nothing.
 		 */
 		p = hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type);
+		if (!p) {
+			err = -EIO;
+			goto unlock;
+		}
 
 		if (p->auto_connect == HCI_AUTO_CONN_EXPLICIT)
 			p->auto_connect = HCI_AUTO_CONN_DISABLED;