Commit 1ad187a9 authored Feb 07, 2024 by Hsin-chen Chuang

le_scanning_manager: Ignore Scan Response when Passive scanning

By definition Passive scanning won't send out SCAN_REQ PDUs so shouldn't
wait for Scan Response.

This patch only affects the ChromeOS device using Legacy scan because
it's the only use case of LeScanningFilterPolicy::ACCEPT_ALL + Passive;
On the other platforms Vendor command + FILTER_ACCEPT_LIST_ONLY is
usually preferred.

Bug: 323979740
Tag: #floss
Test: mmm packages/modules/Bluetooth
Test: Manual & Tauto test with https://r.android.com/c/2952830
Flag: EXEMPT, Floss-only changes because Android always uses Active scan
Change-Id: I8277abad492a06a60810d44066043b14c235b8c4

parent c58e6099

system/gd/hci/le_scanning_manager.cc

+1 −0

Original line number	Diff line number	Diff line
		@@ -457,6 +457,7 @@ struct LeScanningManager::impl : public LeAddressManagerCallback {
		// with hardware-filtering features should we ignore waiting for scan response, and make sure
		// scan responses are still reported too.
		scanning_reassembler_.SetIgnoreScanResponses(
		le_scan_type_ == LeScanType::PASSIVE \|\|
		filter_policy_ == LeScanningFilterPolicy::FILTER_ACCEPT_LIST_ONLY);

		std::optional<LeScanningReassembler::CompleteAdvertisingData> processed_report =