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authorJakub Kicinski <kuba@kernel.org>2024-08-08 14:03:51 -0700
committerJakub Kicinski <kuba@kernel.org>2024-08-08 14:04:17 -0700
commite47fd9beb1cec00f43077d6b6238c8d30bd03ecf (patch)
tree504747e4a88042565ad7957260915242ff687b61 /net/bluetooth/hci_sync.c
parent91d516d4de48532d967a77967834e00c8c53dfe6 (diff)
parentee9a43b7cfe2d8a3520335fea7d8ce71b8cabd9d (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts or adjacent changes. Link: https://patch.msgid.link/20240808170148.3629934-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/bluetooth/hci_sync.c')
-rw-r--r--net/bluetooth/hci_sync.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index a31d39a821f4..e79cd40bd079 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3019,6 +3019,20 @@ static int hci_passive_scan_sync(struct hci_dev *hdev)
} else if (hci_is_adv_monitoring(hdev)) {
window = hdev->le_scan_window_adv_monitor;
interval = hdev->le_scan_int_adv_monitor;
+
+ /* Disable duplicates filter when scanning for advertisement
+ * monitor for the following reasons.
+ *
+ * For HW pattern filtering (ex. MSFT), Realtek and Qualcomm
+ * controllers ignore RSSI_Sampling_Period when the duplicates
+ * filter is enabled.
+ *
+ * For SW pattern filtering, when we're not doing interleaved
+ * scanning, it is necessary to disable duplicates filter,
+ * otherwise hosts can only receive one advertisement and it's
+ * impossible to know if a peer is still in range.
+ */
+ filter_dups = LE_SCAN_FILTER_DUP_DISABLE;
} else {
window = hdev->le_scan_window;
interval = hdev->le_scan_interval;