Currently the delayed work managing advertising duration and timeout is
part of the advertising instance structure. This is not correct as only
a single instance can be advertised at any given time. To implement
round robin advertising a single delayed work structure is needed.
To fix this the delayed work structure is being moved to the hci_dev
structure. The instance specific variable is renamed to "remaining_time"
to make it clear that this is the remaining lifetime of the instance and
not the current advertising timeout.
Signed-off-by: Florian Grandel <fgrandel@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 5 ++++-
net/bluetooth/hci_core.c | 29 +++++++++++++++++++++++++++++
net/bluetooth/mgmt.c | 27 +++++++++++----------------
3 files changed, 44 insertions(+), 17 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 4242dbf..b53e1b1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -156,11 +156,11 @@ struct oob_data {
};
struct adv_info {
- struct delayed_work timeout_exp;
struct list_head list;
__u8 instance;
__u32 flags;
__u16 timeout;
+ __u16 remaining_time;
__u16 duration;
__u16 adv_data_len;
__u8 adv_data[HCI_MAX_AD_LENGTH];
@@ -382,6 +382,8 @@ struct hci_dev {
struct list_head adv_instances;
unsigned int adv_instance_cnt;
__u8 cur_adv_instance;
+ __u16 adv_instance_timeout;
+ struct delayed_work adv_instance_expire;
__u8 irk[16];
__u32 rpa_timeout;
@@ -1379,6 +1381,7 @@ void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
int mgmt_powered(struct hci_dev *hdev, u8 powered);
int mgmt_update_adv_data(struct hci_dev *hdev);
void mgmt_discoverable_timeout(struct hci_dev *hdev);
+void mgmt_adv_timeout_expired(struct hci_dev *hdev);
void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
bool persistent);
void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ebf37eb..d1110db 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1591,6 +1591,11 @@ static int hci_dev_do_close(struct hci_dev *hdev)
if (hci_dev_test_flag(hdev, HCI_MGMT))
cancel_delayed_work_sync(&hdev->rpa_expired);
+ if (hdev->adv_instance_timeout) {
+ cancel_delayed_work_sync(&hdev->adv_instance_expire);
+ hdev->adv_instance_timeout = 0;
+ }
+
/* Avoid potential lockdep warnings from the *_flush() calls by
* ensuring the workqueue is empty up front.
*/
@@ -2147,6 +2152,17 @@ static void hci_discov_off(struct work_struct *work)
mgmt_discoverable_timeout(hdev);
}
+static void hci_adv_timeout_expire(struct work_struct *work)
+{
+ struct hci_dev *hdev;
+
+ hdev = container_of(work, struct hci_dev, adv_instance_expire.work);
+
+ BT_DBG("%s", hdev->name);
+
+ mgmt_adv_timeout_expired(hdev);
+}
+
void hci_uuids_clear(struct hci_dev *hdev)
{
struct bt_uuid *uuid, *tmp;
@@ -2650,6 +2666,11 @@ int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance)
BT_DBG("%s removing %dMR", hdev->name, instance);
+ if (hdev->cur_adv_instance == instance && hdev->adv_instance_timeout) {
+ cancel_delayed_work(&hdev->adv_instance_expire);
+ hdev->adv_instance_timeout = 0;
+ }
+
list_del(&adv_instance->list);
kfree(adv_instance);
@@ -2663,6 +2684,11 @@ void hci_adv_instances_clear(struct hci_dev *hdev)
{
struct adv_info *adv_instance, *n;
+ if (hdev->adv_instance_timeout) {
+ cancel_delayed_work(&hdev->adv_instance_expire);
+ hdev->adv_instance_timeout = 0;
+ }
+
list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
list_del(&adv_instance->list);
kfree(adv_instance);
@@ -2712,6 +2738,7 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
scan_rsp_data, scan_rsp_len);
adv_instance->timeout = timeout;
+ adv_instance->remaining_time = timeout;
if (duration == 0)
adv_instance->duration = HCI_DEFAULT_ADV_DURATION;
@@ -3130,6 +3157,7 @@ struct hci_dev *hci_alloc_dev(void)
hdev->adv_tx_power = HCI_TX_POWER_INVALID;
hdev->adv_instance_cnt = 0;
hdev->cur_adv_instance = 0x00;
+ hdev->adv_instance_timeout = 0;
hdev->sniff_max_interval = 800;
hdev->sniff_min_interval = 80;
@@ -3183,6 +3211,7 @@ struct hci_dev *hci_alloc_dev(void)
INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work);
INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work);
+ INIT_DELAYED_WORK(&hdev->adv_instance_expire, hci_adv_timeout_expire);
skb_queue_head_init(&hdev->rx_q);
skb_queue_head_init(&hdev->cmd_q);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 92c50a1..a8319f6 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1466,8 +1466,8 @@ static void clear_adv_instance(struct hci_dev *hdev)
if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
return;
- if (hdev->adv_instance.timeout)
- cancel_delayed_work(&hdev->adv_instance.timeout_exp);
+ if (hdev->adv_instance_timeout)
+ cancel_delayed_work(&hdev->adv_instance_expire);
memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance));
advertising_removed(NULL, hdev, 1);
@@ -1497,7 +1497,7 @@ static int clean_up_hci_state(struct hci_dev *hdev)
hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
}
- if (hdev->adv_instance.timeout)
+ if (hdev->adv_instance_timeout)
clear_adv_instance(hdev);
if (hci_dev_test_flag(hdev, HCI_LE_ADV))
@@ -6914,12 +6914,9 @@ unlock:
hci_dev_unlock(hdev);
}
-static void adv_timeout_expired(struct work_struct *work)
+void mgmt_adv_timeout_expired(struct hci_dev *hdev)
{
- struct hci_dev *hdev = container_of(work, struct hci_dev,
- adv_instance.timeout_exp.work);
-
- hdev->adv_instance.timeout = 0;
+ hdev->adv_instance_timeout = 0;
hci_dev_lock(hdev);
clear_adv_instance(hdev);
@@ -6981,8 +6978,6 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev,
goto unlock;
}
- INIT_DELAYED_WORK(&hdev->adv_instance.timeout_exp, adv_timeout_expired);
-
hdev->adv_instance.flags = flags;
hdev->adv_instance.adv_data_len = cp->adv_data_len;
hdev->adv_instance.scan_rsp_len = cp->scan_rsp_len;
@@ -6994,14 +6989,14 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev,
memcpy(hdev->adv_instance.scan_rsp_data,
cp->data + cp->adv_data_len, cp->scan_rsp_len);
- if (hdev->adv_instance.timeout)
- cancel_delayed_work(&hdev->adv_instance.timeout_exp);
+ if (hdev->adv_instance_timeout)
+ cancel_delayed_work(&hdev->adv_instance_expire);
- hdev->adv_instance.timeout = timeout;
+ hdev->adv_instance_timeout = timeout;
if (timeout)
queue_delayed_work(hdev->workqueue,
- &hdev->adv_instance.timeout_exp,
+ &hdev->adv_instance_expire,
msecs_to_jiffies(timeout * 1000));
if (!hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING_INSTANCE))
@@ -7106,8 +7101,8 @@ static int remove_advertising(struct sock *sk, struct hci_dev *hdev,
goto unlock;
}
- if (hdev->adv_instance.timeout)
- cancel_delayed_work(&hdev->adv_instance.timeout_exp);
+ if (hdev->adv_instance_timeout)
+ cancel_delayed_work(&hdev->adv_instance_expire);
memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance));
--
1.9.1
--
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