Bluetooth: Clean up current advertising instance tracking
We can simplify a lot of code by making sure hdev->cur_adv_instance is
always up-to-date. This allows e.g. the removal of the
get_current_adv_instance() helper function and the special
HCI_ADV_CURRENT value. This patch also makes selecting instance 0x00
explicit in the various calls where advertising instances aren't
enabled, e.g. when HCI_ADVERTISING is set or we've just finished
enabling LE.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 14db777..9997c31 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -815,23 +815,9 @@
&enable_cp);
}
-static u8 get_current_adv_instance(struct hci_dev *hdev)
-{
- /* The "Set Advertising" setting supersedes the "Add Advertising"
- * setting. Here we set the advertising data based on which
- * setting was set. When neither apply, default to the global settings,
- * represented by instance "0".
- */
- if (!list_empty(&hdev->adv_instances) &&
- !hci_dev_test_flag(hdev, HCI_ADVERTISING))
- return hdev->cur_adv_instance;
-
- return 0x00;
-}
-
static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
{
- u8 instance = get_current_adv_instance(hdev);
+ u8 instance = hdev->cur_adv_instance;
struct adv_info *adv_instance;
/* Ignore instance 0 */
@@ -890,7 +876,6 @@
struct hci_cp_le_set_adv_param cp;
u8 own_addr_type, enable = 0x01;
bool connectable;
- u8 instance;
u32 flags;
if (hci_conn_num(hdev, LE_LINK) > 0)
@@ -906,8 +891,7 @@
*/
hci_dev_clear_flag(hdev, HCI_LE_ADV);
- instance = get_current_adv_instance(hdev);
- flags = get_adv_instance_flags(hdev, instance);
+ flags = get_adv_instance_flags(hdev, hdev->cur_adv_instance);
/* If the "connectable" instance flag was not set, then choose between
* ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
@@ -985,7 +969,7 @@
return adv_instance->scan_rsp_len;
}
-static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance)
+void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)
{
struct hci_dev *hdev = req->hdev;
struct hci_cp_le_set_scan_rsp_data cp;
@@ -1013,14 +997,6 @@
hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
}
-void __hci_req_update_scan_rsp_data(struct hci_request *req, int instance)
-{
- if (instance == HCI_ADV_CURRENT)
- instance = get_current_adv_instance(req->hdev);
-
- update_inst_scan_rsp_data(req, instance);
-}
-
static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
{
struct adv_info *adv_instance = NULL;
@@ -1089,7 +1065,7 @@
return ad_len;
}
-static void update_inst_adv_data(struct hci_request *req, u8 instance)
+void __hci_req_update_adv_data(struct hci_request *req, u8 instance)
{
struct hci_dev *hdev = req->hdev;
struct hci_cp_le_set_adv_data cp;
@@ -1115,15 +1091,7 @@
hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
}
-void __hci_req_update_adv_data(struct hci_request *req, int instance)
-{
- if (instance == HCI_ADV_CURRENT)
- instance = get_current_adv_instance(req->hdev);
-
- update_inst_adv_data(req, instance);
-}
-
-int hci_req_update_adv_data(struct hci_dev *hdev, int instance)
+int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance)
{
struct hci_request req;
@@ -1141,21 +1109,19 @@
void hci_req_reenable_advertising(struct hci_dev *hdev)
{
struct hci_request req;
- u8 instance;
if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
list_empty(&hdev->adv_instances))
return;
- instance = get_current_adv_instance(hdev);
-
hci_req_init(&req, hdev);
- if (instance) {
- __hci_req_schedule_adv_instance(&req, instance, true);
+ if (hdev->cur_adv_instance) {
+ __hci_req_schedule_adv_instance(&req, hdev->cur_adv_instance,
+ true);
} else {
- __hci_req_update_adv_data(&req, HCI_ADV_CURRENT);
- __hci_req_update_scan_rsp_data(&req, HCI_ADV_CURRENT);
+ __hci_req_update_adv_data(&req, 0x00);
+ __hci_req_update_scan_rsp_data(&req, 0x00);
__hci_req_enable_advertising(&req);
}
@@ -1176,7 +1142,7 @@
hdev->adv_instance_timeout = 0;
- instance = get_current_adv_instance(hdev);
+ instance = hdev->cur_adv_instance;
if (instance == 0x00)
goto unlock;
@@ -1246,8 +1212,8 @@
return 0;
hdev->cur_adv_instance = instance;
- __hci_req_update_adv_data(req, HCI_ADV_CURRENT);
- __hci_req_update_scan_rsp_data(req, HCI_ADV_CURRENT);
+ __hci_req_update_adv_data(req, instance);
+ __hci_req_update_scan_rsp_data(req, instance);
__hci_req_enable_advertising(req);
return 0;
@@ -1301,7 +1267,6 @@
if (!err)
mgmt_advertising_removed(NULL, hdev, rem_inst);
}
- hdev->cur_adv_instance = 0x00;
} else {
adv_instance = hci_find_adv_instance(hdev, instance);
@@ -1318,9 +1283,6 @@
}
}
- if (list_empty(&hdev->adv_instances))
- hdev->cur_adv_instance = 0x00;
-
if (!req || !hdev_is_powered(hdev) ||
hci_dev_test_flag(hdev, HCI_ADVERTISING))
return;
@@ -1518,7 +1480,7 @@
* advertising flags.
*/
if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
- __hci_req_update_adv_data(req, HCI_ADV_CURRENT);
+ __hci_req_update_adv_data(req, hdev->cur_adv_instance);
/* Update the advertising parameters if necessary */
if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
@@ -1627,7 +1589,7 @@
* only update AD if advertising was enabled using Set Advertising.
*/
if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
- __hci_req_update_adv_data(req, HCI_ADV_CURRENT);
+ __hci_req_update_adv_data(req, 0x00);
hci_dev_unlock(hdev);