From 0ec5ae8438af02bf2295f08585d8ab49d15eaf2c Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Tue, 8 Jul 2014 15:07:50 +0300 Subject: [PATCH] Bluetooth: Simplify usage of the enable_advertising function By adding support for disabling advertising when necessary and doing the checks for existing LE connections inside the enable_advertising function we can simplify the calling code quite a lot. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann --- net/bluetooth/mgmt.c | 49 +++++++++++++++----------------------------- 1 file changed, 16 insertions(+), 33 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index be589d8d437f..68c0698124fb 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -1039,6 +1039,13 @@ static bool get_connectable(struct hci_dev *hdev) return test_bit(HCI_CONNECTABLE, &hdev->dev_flags); } +static void disable_advertising(struct hci_request *req) +{ + u8 enable = 0x00; + + hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); +} + static void enable_advertising(struct hci_request *req) { struct hci_dev *hdev = req->hdev; @@ -1046,6 +1053,12 @@ static void enable_advertising(struct hci_request *req) u8 own_addr_type, enable = 0x01; bool connectable; + if (hci_conn_num(hdev, LE_LINK) > 0) + return; + + if (test_bit(HCI_LE_ADV, &hdev->dev_flags)) + disable_advertising(req); + /* Clear the HCI_LE_ADV bit temporarily so that the * hci_update_random_address knows that it's safe to go ahead * and write a new random address. The flag will be set back on @@ -1074,13 +1087,6 @@ static void enable_advertising(struct hci_request *req) hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); } -static void disable_advertising(struct hci_request *req) -{ - u8 enable = 0x00; - - hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); -} - static void service_cache_off(struct work_struct *work) { struct hci_dev *hdev = container_of(work, struct hci_dev, @@ -1112,19 +1118,14 @@ static void rpa_expired(struct work_struct *work) set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags); - if (!test_bit(HCI_ADVERTISING, &hdev->dev_flags) || - hci_conn_num(hdev, LE_LINK) > 0) + if (!test_bit(HCI_ADVERTISING, &hdev->dev_flags)) return; /* The generation of a new RPA and programming it into the * controller happens in the enable_advertising() function. */ - hci_req_init(&req, hdev); - - disable_advertising(&req); enable_advertising(&req); - hci_req_run(&req, NULL); } @@ -1864,10 +1865,8 @@ static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data, write_fast_connectable(&req, false); if (test_bit(HCI_ADVERTISING, &hdev->dev_flags) && - hci_conn_num(hdev, LE_LINK) == 0) { - disable_advertising(&req); + !test_bit(HCI_LE_ADV, &hdev->dev_flags)) enable_advertising(&req); - } err = hci_req_run(&req, set_connectable_complete); if (err < 0) { @@ -6809,32 +6808,16 @@ void mgmt_discovering(struct hci_dev *hdev, u8 discovering) static void adv_enable_complete(struct hci_dev *hdev, u8 status) { BT_DBG("%s status %u", hdev->name, status); - - /* Clear the advertising mgmt setting if we failed to re-enable it */ - if (status) { - clear_bit(HCI_ADVERTISING, &hdev->dev_flags); - new_settings(hdev, NULL); - } } void mgmt_reenable_advertising(struct hci_dev *hdev) { struct hci_request req; - if (hci_conn_num(hdev, LE_LINK) > 0) - return; - if (!test_bit(HCI_ADVERTISING, &hdev->dev_flags)) return; hci_req_init(&req, hdev); enable_advertising(&req); - - /* If this fails we have no option but to let user space know - * that we've disabled advertising. - */ - if (hci_req_run(&req, adv_enable_complete) < 0) { - clear_bit(HCI_ADVERTISING, &hdev->dev_flags); - new_settings(hdev, NULL); - } + hci_req_run(&req, adv_enable_complete); } -- 2.20.1