Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kern

el/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2021-02-11

Here's the main bluetooth-next pull request for 5.12:

 - Add support for advertising monitor offliading using Microsoft
   vendor extensions
 - Add firmware download support for MediaTek MT7921U USB devices
 - Suspend-related fixes for Qualcomm devices
 - Add support for Intel GarfieldPeak controller
 - Various other smaller fixes & cleanups

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 48 insertions, 26 deletions

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 71bffd745472..e55976db4403 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -29,6 +29,7 @@
 
 #include "smp.h"
 #include "hci_request.h"
+#include "msft.h"
 
 #define HCI_REQ_DONE	  0
 #define HCI_REQ_PEND	  1
@@ -404,13 +405,18 @@ static void cancel_interleave_scan(struct hci_dev *hdev)
  */
 static bool __hci_update_interleaved_scan(struct hci_dev *hdev)
 {
-	/* If there is at least one ADV monitors and one pending LE connection
-	 * or one device to be scanned for, we should alternate between
-	 * allowlist scan and one without any filters to save power.
+	/* Do interleaved scan only if all of the following are true:
+	 * - There is at least one ADV monitor
+	 * - At least one pending LE connection or one device to be scanned for
+	 * - Monitor offloading is not supported
+	 * If so, we should alternate between allowlist scan and one without
+	 * any filters to save power.
 	 */
 	bool use_interleaving = hci_is_adv_monitoring(hdev) &&
 				!(list_empty(&hdev->pend_le_conns) &&
-				  list_empty(&hdev->pend_le_reports));
+				  list_empty(&hdev->pend_le_reports)) &&
+				hci_get_adv_monitor_offload_ext(hdev) ==
+				    HCI_ADV_MONITOR_EXT_NONE;
 	bool is_interleaving = is_interleave_scanning(hdev);
 
 	if (use_interleaving && !is_interleaving) {
@@ -899,14 +905,11 @@ static u8 update_white_list(struct hci_request *req)
 
 	/* Use the allowlist unless the following conditions are all true:
 	 * - We are not currently suspending
-	 * - There are 1 or more ADV monitors registered
+	 * - There are 1 or more ADV monitors registered and it's not offloaded
 	 * - Interleaved scanning is not currently using the allowlist
-	 *
-	 * Once the controller offloading of advertisement monitor is in place,
-	 * the above condition should include the support of MSFT extension
-	 * support.
 	 */
 	if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended &&
+	    hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE &&
 	    hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST)
 		return 0x00;
 
@@ -1087,6 +1090,8 @@ void hci_req_add_le_passive_scan(struct hci_request *req)
 	if (hdev->suspended) {
 		window = hdev->le_scan_window_suspend;
 		interval = hdev->le_scan_int_suspend;
+
+		set_bit(SUSPEND_SCAN_ENABLE, hdev->suspend_tasks);
 	} else if (hci_is_le_conn_scanning(hdev)) {
 		window = hdev->le_scan_window_connect;
 		interval = hdev->le_scan_int_connect;
@@ -1170,19 +1175,6 @@ static void hci_req_set_event_filter(struct hci_request *req)
 	hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
 }
 
-static void hci_req_config_le_suspend_scan(struct hci_request *req)
-{
-	/* Before changing params disable scan if enabled */
-	if (hci_dev_test_flag(req->hdev, HCI_LE_SCAN))
-		hci_req_add_le_scan_disable(req, false);
-
-	/* Configure params and enable scanning */
-	hci_req_add_le_passive_scan(req);
-
-	/* Block suspend notifier on response */
-	set_bit(SUSPEND_SCAN_ENABLE, req->hdev->suspend_tasks);
-}
-
 static void cancel_adv_timeout(struct hci_dev *hdev)
 {
 	if (hdev->adv_instance_timeout) {
@@ -1245,12 +1237,37 @@ static void suspend_req_complete(struct hci_dev *hdev, u8 status, u16 opcode)
 {
 	bt_dev_dbg(hdev, "Request complete opcode=0x%x, status=0x%x", opcode,
 		   status);
-	if (test_and_clear_bit(SUSPEND_SCAN_ENABLE, hdev->suspend_tasks) ||
-	    test_and_clear_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks)) {
+	if (test_bit(SUSPEND_SCAN_ENABLE, hdev->suspend_tasks) ||
+	    test_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks)) {
+		clear_bit(SUSPEND_SCAN_ENABLE, hdev->suspend_tasks);
+		clear_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
+		wake_up(&hdev->suspend_wait_q);
+	}
+
+	if (test_bit(SUSPEND_SET_ADV_FILTER, hdev->suspend_tasks)) {
+		clear_bit(SUSPEND_SET_ADV_FILTER, hdev->suspend_tasks);
 		wake_up(&hdev->suspend_wait_q);
 	}
 }
 
+static void hci_req_add_set_adv_filter_enable(struct hci_request *req,
+					      bool enable)
+{
+	struct hci_dev *hdev = req->hdev;
+
+	switch (hci_get_adv_monitor_offload_ext(hdev)) {
+	case HCI_ADV_MONITOR_EXT_MSFT:
+		msft_req_add_set_filter_enable(req, enable);
+		break;
+	default:
+		return;
+	}
+
+	/* No need to block when enabling since it's on resume path */
+	if (hdev->suspended && !enable)
+		set_bit(SUSPEND_SET_ADV_FILTER, hdev->suspend_tasks);
+}
+
 /* Call with hci_dev_lock */
 void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 {
@@ -1308,6 +1325,9 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 			hci_req_add_le_scan_disable(&req, false);
 		}
 
+		/* Disable advertisement filters */
+		hci_req_add_set_adv_filter_enable(&req, false);
+
 		/* Mark task needing completion */
 		set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
 
@@ -1336,7 +1356,7 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 		/* Enable event filter for paired devices */
 		hci_req_set_event_filter(&req);
 		/* Enable passive scan at lower duty cycle */
-		hci_req_config_le_suspend_scan(&req);
+		__hci_update_background_scan(&req);
 		/* Pause scan changes again. */
 		hdev->scanning_paused = true;
 		hci_req_run(&req, suspend_req_complete);
@@ -1346,7 +1366,9 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 
 		hci_req_clear_event_filter(&req);
 		/* Reset passive/background scanning to normal */
-		hci_req_config_le_suspend_scan(&req);
+		__hci_update_background_scan(&req);
+		/* Enable all of the advertisement filters */
+		hci_req_add_set_adv_filter_enable(&req, true);
 
 		/* Unpause directed advertising */
 		hdev->advertising_paused = false;