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authorJohan Hedberg <johan.hedberg@intel.com>2015-11-30 11:21:45 +0200
committerMarcel Holtmann <marcel@holtmann.org>2015-12-10 00:51:50 +0100
commitcab054ab47fa3fdf1c597a9874363680bfdab33e (patch)
tree66de00bdcdbf62da735338ae63cd340d60035cc1 /net
parentBluetooth: Clean up advertising initialization in powered_update_hci() (diff)
downloadlinux-dev-cab054ab47fa3fdf1c597a9874363680bfdab33e.tar.xz
linux-dev-cab054ab47fa3fdf1c597a9874363680bfdab33e.zip
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>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/hci_core.c12
-rw-r--r--net/bluetooth/hci_request.c68
-rw-r--r--net/bluetooth/hci_request.h8
-rw-r--r--net/bluetooth/mgmt.c10
4 files changed, 32 insertions, 66 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index eac3f6fa1272..9fb443a5473a 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1769,7 +1769,7 @@ static void hci_update_scan_state(struct hci_dev *hdev, u8 scan)
hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
- hci_req_update_adv_data(hdev, HCI_ADV_CURRENT);
+ hci_req_update_adv_data(hdev, hdev->cur_adv_instance);
mgmt_new_settings(hdev);
}
@@ -2610,9 +2610,12 @@ 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;
+ if (hdev->cur_adv_instance == instance) {
+ if (hdev->adv_instance_timeout) {
+ cancel_delayed_work(&hdev->adv_instance_expire);
+ hdev->adv_instance_timeout = 0;
+ }
+ hdev->cur_adv_instance = 0x00;
}
list_del(&adv_instance->list);
@@ -2639,6 +2642,7 @@ void hci_adv_instances_clear(struct hci_dev *hdev)
}
hdev->adv_instance_cnt = 0;
+ hdev->cur_adv_instance = 0x00;
}
/* This function requires the caller holds hdev->lock */
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 14db777a6bb1..9997c31ef987 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -815,23 +815,9 @@ void hci_req_add_le_passive_scan(struct hci_request *req)
&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 @@ void __hci_req_enable_advertising(struct hci_request *req)
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 @@ void __hci_req_enable_advertising(struct hci_request *req)
*/
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 @@ static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
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 @@ static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance)
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 @@ static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
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 @@ static void update_inst_adv_data(struct hci_request *req, u8 instance)
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 @@ static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
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 @@ static void adv_timeout_expire(struct work_struct *work)
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 @@ int __hci_req_schedule_adv_instance(struct hci_request *req, u8 instance,
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 @@ void hci_req_clear_adv_instance(struct hci_dev *hdev, struct hci_request *req,
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 @@ void hci_req_clear_adv_instance(struct hci_dev *hdev, struct hci_request *req,
}
}
- 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 @@ static int connectable_update(struct hci_request *req, unsigned long opt)
* 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 @@ static int discoverable_update(struct hci_request *req, unsigned long opt)
* 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);
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index a24d3b55094c..64ff8c040d50 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -64,14 +64,12 @@ void __hci_req_update_eir(struct hci_request *req);
void hci_req_add_le_scan_disable(struct hci_request *req);
void hci_req_add_le_passive_scan(struct hci_request *req);
-#define HCI_ADV_CURRENT (-1)
-
void hci_req_reenable_advertising(struct hci_dev *hdev);
void __hci_req_enable_advertising(struct hci_request *req);
void __hci_req_disable_advertising(struct hci_request *req);
-void __hci_req_update_adv_data(struct hci_request *req, int instance);
-int hci_req_update_adv_data(struct hci_dev *hdev, int instance);
-void __hci_req_update_scan_rsp_data(struct hci_request *req, int instance);
+void __hci_req_update_adv_data(struct hci_request *req, u8 instance);
+int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance);
+void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance);
int __hci_req_schedule_adv_instance(struct hci_request *req, u8 instance,
bool force);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 03a65e89a7d7..621f6fdd0dd1 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1626,8 +1626,8 @@ static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
struct hci_request req;
hci_req_init(&req, hdev);
- __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_run(&req, NULL);
hci_update_background_scan(hdev);
}
@@ -3006,7 +3006,7 @@ static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
* no need to udpate the advertising data here.
*/
if (lmp_le_capable(hdev))
- __hci_req_update_scan_rsp_data(&req, HCI_ADV_CURRENT);
+ __hci_req_update_scan_rsp_data(&req, hdev->cur_adv_instance);
err = hci_req_run(&req, set_name_complete);
if (err < 0)
@@ -3799,6 +3799,7 @@ static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
bool changed;
if (cp->val) {
+ hdev->cur_adv_instance = 0x00;
changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING);
if (cp->val == 0x02)
hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
@@ -3846,6 +3847,7 @@ static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
* We cannot use update_[adv|scan_rsp]_data() here as the
* HCI_ADVERTISING flag is not yet set.
*/
+ hdev->cur_adv_instance = 0x00;
__hci_req_update_adv_data(&req, 0x00);
__hci_req_update_scan_rsp_data(&req, 0x00);
__hci_req_enable_advertising(&req);
@@ -4195,7 +4197,7 @@ static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
/* Since only the advertising data flags will change, there
* is no need to update the scan response data.
*/
- __hci_req_update_adv_data(&req, HCI_ADV_CURRENT);
+ __hci_req_update_adv_data(&req, hdev->cur_adv_instance);
err = hci_req_run(&req, set_bredr_complete);
if (err < 0)