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authorManish Mandlik <mmandlik@google.com>2022-03-12 13:08:59 +0300
committerMarcel Holtmann <marcel@holtmann.org>2022-03-18 19:12:08 +0300
commitff39fc1bc6b4053a9c3f193c7e3255a06ecfcc43 (patch)
treec433353ebc3eb5a17aa56cca9b7793fad7ab7859 /net/bluetooth
parent37b63c68194d09d358c8abd73692adf9a6ceaad3 (diff)
downloadlinux-ff39fc1bc6b4053a9c3f193c7e3255a06ecfcc43.tar.xz
Bluetooth: Send AdvMonitor Dev Found for all matched devices
When an Advertisement Monitor is configured with SamplingPeriod 0xFF, the controller reports only one adv report along with the MSFT Monitor Device event. When an advertiser matches multiple monitors, some controllers send one adv report for each matched monitor; whereas, some controllers send just one adv report for all matched monitors. In such a case, report Adv Monitor Device Found event for each matched monitor. Signed-off-by: Manish Mandlik <mmandlik@google.com> Reviewed-by: Miao-chen Chou <mcchou@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/mgmt.c70
1 files changed, 37 insertions, 33 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index e0137bc1080e..d2d390534e54 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -9628,17 +9628,44 @@ void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
NULL);
}
+static void mgmt_send_adv_monitor_device_found(struct hci_dev *hdev,
+ struct sk_buff *skb,
+ struct sock *skip_sk,
+ u16 handle)
+{
+ struct sk_buff *advmon_skb;
+ size_t advmon_skb_len;
+ __le16 *monitor_handle;
+
+ if (!skb)
+ return;
+
+ advmon_skb_len = (sizeof(struct mgmt_ev_adv_monitor_device_found) -
+ sizeof(struct mgmt_ev_device_found)) + skb->len;
+ advmon_skb = mgmt_alloc_skb(hdev, MGMT_EV_ADV_MONITOR_DEVICE_FOUND,
+ advmon_skb_len);
+ if (!advmon_skb)
+ return;
+
+ /* ADV_MONITOR_DEVICE_FOUND is similar to DEVICE_FOUND event except
+ * that it also has 'monitor_handle'. Make a copy of DEVICE_FOUND and
+ * store monitor_handle of the matched monitor.
+ */
+ monitor_handle = skb_put(advmon_skb, sizeof(*monitor_handle));
+ *monitor_handle = cpu_to_le16(handle);
+ skb_put_data(advmon_skb, skb->data, skb->len);
+
+ mgmt_event_skb(advmon_skb, skip_sk);
+}
+
static void mgmt_adv_monitor_device_found(struct hci_dev *hdev,
bdaddr_t *bdaddr, bool report_device,
struct sk_buff *skb,
struct sock *skip_sk)
{
- struct sk_buff *advmon_skb;
- size_t advmon_skb_len;
- __le16 *monitor_handle;
struct monitored_device *dev, *tmp;
bool matched = false;
- bool notify = false;
+ bool notified = false;
/* We have received the Advertisement Report because:
* 1. the kernel has initiated active discovery
@@ -9660,25 +9687,6 @@ static void mgmt_adv_monitor_device_found(struct hci_dev *hdev,
return;
}
- advmon_skb_len = (sizeof(struct mgmt_ev_adv_monitor_device_found) -
- sizeof(struct mgmt_ev_device_found)) + skb->len;
- advmon_skb = mgmt_alloc_skb(hdev, MGMT_EV_ADV_MONITOR_DEVICE_FOUND,
- advmon_skb_len);
- if (!advmon_skb) {
- if (report_device)
- mgmt_event_skb(skb, skip_sk);
- else
- kfree_skb(skb);
- return;
- }
-
- /* ADV_MONITOR_DEVICE_FOUND is similar to DEVICE_FOUND event except
- * that it also has 'monitor_handle'. Make a copy of DEVICE_FOUND and
- * store monitor_handle of the matched monitor.
- */
- monitor_handle = skb_put(advmon_skb, sizeof(*monitor_handle));
- skb_put_data(advmon_skb, skb->data, skb->len);
-
hdev->advmon_pend_notify = false;
list_for_each_entry_safe(dev, tmp, &hdev->monitored_devices, list) {
@@ -9686,8 +9694,10 @@ static void mgmt_adv_monitor_device_found(struct hci_dev *hdev,
matched = true;
if (!dev->notified) {
- *monitor_handle = cpu_to_le16(dev->handle);
- notify = true;
+ mgmt_send_adv_monitor_device_found(hdev, skb,
+ skip_sk,
+ dev->handle);
+ notified = true;
dev->notified = true;
}
}
@@ -9697,25 +9707,19 @@ static void mgmt_adv_monitor_device_found(struct hci_dev *hdev,
}
if (!report_device &&
- ((matched && !notify) || !msft_monitor_supported(hdev))) {
+ ((matched && !notified) || !msft_monitor_supported(hdev))) {
/* Handle 0 indicates that we are not active scanning and this
* is a subsequent advertisement report for an already matched
* Advertisement Monitor or the controller offloading support
* is not available.
*/
- *monitor_handle = 0;
- notify = true;
+ mgmt_send_adv_monitor_device_found(hdev, skb, skip_sk, 0);
}
if (report_device)
mgmt_event_skb(skb, skip_sk);
else
kfree_skb(skb);
-
- if (notify)
- mgmt_event_skb(advmon_skb, skip_sk);
- else
- kfree_skb(advmon_skb);
}
void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,