2022-08-01 17:20:22

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 00/10] Clean-up stale/unused hci_request.c code

This will be a growing patch-set of conversions and dead-code removal
towards the goal of retiring hci_request.c

The patch sets will be split amoung the work queues and delayed work
queues as initialized in hci_request_setup(), with the ultimate goal of
eliminating hci_request.c entirely.

v2: Published

v3: Continuing work. This does include one conversion
(SCO configure_datapath) that has been tested with mgmt-tester and
sco-tester, but has not been tested with a controller with an
off-loadable codec.

v4: Clean-up checkpatch warnings.

v5: Remove remaining procedures from hci_request.c/h. Not that other
entities (notably amp.c, hci_event.c and hci_core.c) are still using
the hci_request mechanism, however, the mgmt-tester unit test only
currently execute opcode 0x1408 - HCI_OP_READ_ENC_KEY_SIZE during normal
testing.

v6: Fix CI reported errors, and recoded hci_abort_conn for optional sync
queue usage to fix some L2CAP test cases.

Brian Gix (10):
Bluetooth: Convert le_scan_disable timeout to hci_sync
Bluetooth: Rework le_scan_restart for hci_sync
Bluetooth: Delete unused hci_req_stop_discovery()
Bluetooth: Convert SCO configure_datapath to hci_sync
Bluetooth: Convert Interleave Scanning timeout to hci_sync
Bluetooth: Move Adv Instance timer to hci_sync
Bluetooth: Delete unreference hci_request code
Bluetooth: move hci_get_random_address() to hci_sync
Bluetooth: convert hci_update_adv_data to hci_sync
Bluetooth: Convert hci_abort_conn to hci_sync

include/net/bluetooth/hci_sync.h | 10 +-
net/bluetooth/hci_conn.c | 92 +-
net/bluetooth/hci_core.c | 4 +-
net/bluetooth/hci_event.c | 2 +-
net/bluetooth/hci_request.c | 2002 +-----------------------------
net/bluetooth/hci_request.h | 61 -
net/bluetooth/hci_sync.c | 567 ++++++++-
net/bluetooth/mgmt.c | 7 +-
8 files changed, 646 insertions(+), 2099 deletions(-)

--
2.37.1



2022-08-01 17:20:24

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 05/10] Bluetooth: Convert Interleave Scanning timeout to hci_sync

The interleave sacanning timer was running using the deprecated hci_request
method instead of the new hci_sync methodology.

Signed-off-by: Brian Gix <[email protected]>
---
net/bluetooth/hci_request.c | 472 ------------------------------------
net/bluetooth/hci_request.h | 12 -
net/bluetooth/hci_sync.c | 65 ++++-
3 files changed, 60 insertions(+), 489 deletions(-)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index d14e50951aec..fe70be6e1981 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -306,58 +306,6 @@ void __hci_req_write_fast_connectable(struct hci_request *req, bool enable)
hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
}

-static void start_interleave_scan(struct hci_dev *hdev)
-{
- hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
- queue_delayed_work(hdev->req_workqueue,
- &hdev->interleave_scan, 0);
-}
-
-static bool is_interleave_scanning(struct hci_dev *hdev)
-{
- return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
-}
-
-static void cancel_interleave_scan(struct hci_dev *hdev)
-{
- bt_dev_dbg(hdev, "cancelling interleave scan");
-
- cancel_delayed_work_sync(&hdev->interleave_scan);
-
- hdev->interleave_scan_state = INTERLEAVE_SCAN_NONE;
-}
-
-/* Return true if interleave_scan wasn't started until exiting this function,
- * otherwise, return false
- */
-static bool __hci_update_interleaved_scan(struct hci_dev *hdev)
-{
- /* Do interleaved scan only if all of the following are true:
- * - There is at least one ADV monitor
- * - At least one pending LE connection or one device to be scanned for
- * - Monitor offloading is not supported
- * If so, we should alternate between allowlist scan and one without
- * any filters to save power.
- */
- bool use_interleaving = hci_is_adv_monitoring(hdev) &&
- !(list_empty(&hdev->pend_le_conns) &&
- list_empty(&hdev->pend_le_reports)) &&
- hci_get_adv_monitor_offload_ext(hdev) ==
- HCI_ADV_MONITOR_EXT_NONE;
- bool is_interleaving = is_interleave_scanning(hdev);
-
- if (use_interleaving && !is_interleaving) {
- start_interleave_scan(hdev);
- bt_dev_dbg(hdev, "starting interleave scan");
- return true;
- }
-
- if (!use_interleaving && is_interleaving)
- cancel_interleave_scan(hdev);
-
- return false;
-}
-
void __hci_req_update_name(struct hci_request *req)
{
struct hci_dev *hdev = req->hdev;
@@ -429,278 +377,6 @@ void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn)
}
}

-static void del_from_accept_list(struct hci_request *req, bdaddr_t *bdaddr,
- u8 bdaddr_type)
-{
- struct hci_cp_le_del_from_accept_list cp;
-
- cp.bdaddr_type = bdaddr_type;
- bacpy(&cp.bdaddr, bdaddr);
-
- bt_dev_dbg(req->hdev, "Remove %pMR (0x%x) from accept list", &cp.bdaddr,
- cp.bdaddr_type);
- hci_req_add(req, HCI_OP_LE_DEL_FROM_ACCEPT_LIST, sizeof(cp), &cp);
-
- if (use_ll_privacy(req->hdev)) {
- struct smp_irk *irk;
-
- irk = hci_find_irk_by_addr(req->hdev, bdaddr, bdaddr_type);
- if (irk) {
- struct hci_cp_le_del_from_resolv_list cp;
-
- cp.bdaddr_type = bdaddr_type;
- bacpy(&cp.bdaddr, bdaddr);
-
- hci_req_add(req, HCI_OP_LE_DEL_FROM_RESOLV_LIST,
- sizeof(cp), &cp);
- }
- }
-}
-
-/* Adds connection to accept list if needed. On error, returns -1. */
-static int add_to_accept_list(struct hci_request *req,
- struct hci_conn_params *params, u8 *num_entries,
- bool allow_rpa)
-{
- struct hci_cp_le_add_to_accept_list cp;
- struct hci_dev *hdev = req->hdev;
-
- /* Already in accept list */
- if (hci_bdaddr_list_lookup(&hdev->le_accept_list, &params->addr,
- params->addr_type))
- return 0;
-
- /* Select filter policy to accept all advertising */
- if (*num_entries >= hdev->le_accept_list_size)
- return -1;
-
- /* Accept list can not be used with RPAs */
- if (!allow_rpa &&
- !hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY) &&
- hci_find_irk_by_addr(hdev, &params->addr, params->addr_type)) {
- return -1;
- }
-
- /* During suspend, only wakeable devices can be in accept list */
- if (hdev->suspended &&
- !(params->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
- return 0;
-
- *num_entries += 1;
- cp.bdaddr_type = params->addr_type;
- bacpy(&cp.bdaddr, &params->addr);
-
- bt_dev_dbg(hdev, "Add %pMR (0x%x) to accept list", &cp.bdaddr,
- cp.bdaddr_type);
- hci_req_add(req, HCI_OP_LE_ADD_TO_ACCEPT_LIST, sizeof(cp), &cp);
-
- if (use_ll_privacy(hdev)) {
- struct smp_irk *irk;
-
- irk = hci_find_irk_by_addr(hdev, &params->addr,
- params->addr_type);
- if (irk) {
- struct hci_cp_le_add_to_resolv_list cp;
-
- cp.bdaddr_type = params->addr_type;
- bacpy(&cp.bdaddr, &params->addr);
- memcpy(cp.peer_irk, irk->val, 16);
-
- if (hci_dev_test_flag(hdev, HCI_PRIVACY))
- memcpy(cp.local_irk, hdev->irk, 16);
- else
- memset(cp.local_irk, 0, 16);
-
- hci_req_add(req, HCI_OP_LE_ADD_TO_RESOLV_LIST,
- sizeof(cp), &cp);
- }
- }
-
- return 0;
-}
-
-static u8 update_accept_list(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_conn_params *params;
- struct bdaddr_list *b;
- u8 num_entries = 0;
- bool pend_conn, pend_report;
- /* We allow usage of accept list even with RPAs in suspend. In the worst
- * case, we won't be able to wake from devices that use the privacy1.2
- * features. Additionally, once we support privacy1.2 and IRK
- * offloading, we can update this to also check for those conditions.
- */
- bool allow_rpa = hdev->suspended;
-
- if (use_ll_privacy(hdev))
- allow_rpa = true;
-
- /* Go through the current accept list programmed into the
- * controller one by one and check if that address is still
- * in the list of pending connections or list of devices to
- * report. If not present in either list, then queue the
- * command to remove it from the controller.
- */
- list_for_each_entry(b, &hdev->le_accept_list, list) {
- pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns,
- &b->bdaddr,
- b->bdaddr_type);
- pend_report = hci_pend_le_action_lookup(&hdev->pend_le_reports,
- &b->bdaddr,
- b->bdaddr_type);
-
- /* If the device is not likely to connect or report,
- * remove it from the accept list.
- */
- if (!pend_conn && !pend_report) {
- del_from_accept_list(req, &b->bdaddr, b->bdaddr_type);
- continue;
- }
-
- /* Accept list can not be used with RPAs */
- if (!allow_rpa &&
- !hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY) &&
- hci_find_irk_by_addr(hdev, &b->bdaddr, b->bdaddr_type)) {
- return 0x00;
- }
-
- num_entries++;
- }
-
- /* Since all no longer valid accept list entries have been
- * removed, walk through the list of pending connections
- * and ensure that any new device gets programmed into
- * the controller.
- *
- * If the list of the devices is larger than the list of
- * available accept list entries in the controller, then
- * just abort and return filer policy value to not use the
- * accept list.
- */
- list_for_each_entry(params, &hdev->pend_le_conns, action) {
- if (add_to_accept_list(req, params, &num_entries, allow_rpa))
- return 0x00;
- }
-
- /* After adding all new pending connections, walk through
- * the list of pending reports and also add these to the
- * accept list if there is still space. Abort if space runs out.
- */
- list_for_each_entry(params, &hdev->pend_le_reports, action) {
- if (add_to_accept_list(req, params, &num_entries, allow_rpa))
- return 0x00;
- }
-
- /* Use the allowlist unless the following conditions are all true:
- * - We are not currently suspending
- * - There are 1 or more ADV monitors registered and it's not offloaded
- * - Interleaved scanning is not currently using the allowlist
- */
- if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended &&
- hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE &&
- hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST)
- return 0x00;
-
- /* Select filter policy to use accept list */
- return 0x01;
-}
-
-static bool scan_use_rpa(struct hci_dev *hdev)
-{
- return hci_dev_test_flag(hdev, HCI_PRIVACY);
-}
-
-static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval,
- u16 window, u8 own_addr_type, u8 filter_policy,
- bool filter_dup, bool addr_resolv)
-{
- struct hci_dev *hdev = req->hdev;
-
- if (hdev->scanning_paused) {
- bt_dev_dbg(hdev, "Scanning is paused for suspend");
- return;
- }
-
- if (use_ll_privacy(hdev) && addr_resolv) {
- u8 enable = 0x01;
-
- hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
- }
-
- /* Use ext scanning if set ext scan param and ext scan enable is
- * supported
- */
- if (use_ext_scan(hdev)) {
- struct hci_cp_le_set_ext_scan_params *ext_param_cp;
- struct hci_cp_le_set_ext_scan_enable ext_enable_cp;
- struct hci_cp_le_scan_phy_params *phy_params;
- u8 data[sizeof(*ext_param_cp) + sizeof(*phy_params) * 2];
- u32 plen;
-
- ext_param_cp = (void *)data;
- phy_params = (void *)ext_param_cp->data;
-
- memset(ext_param_cp, 0, sizeof(*ext_param_cp));
- ext_param_cp->own_addr_type = own_addr_type;
- ext_param_cp->filter_policy = filter_policy;
-
- plen = sizeof(*ext_param_cp);
-
- if (scan_1m(hdev) || scan_2m(hdev)) {
- ext_param_cp->scanning_phys |= LE_SCAN_PHY_1M;
-
- memset(phy_params, 0, sizeof(*phy_params));
- phy_params->type = type;
- phy_params->interval = cpu_to_le16(interval);
- phy_params->window = cpu_to_le16(window);
-
- plen += sizeof(*phy_params);
- phy_params++;
- }
-
- if (scan_coded(hdev)) {
- ext_param_cp->scanning_phys |= LE_SCAN_PHY_CODED;
-
- memset(phy_params, 0, sizeof(*phy_params));
- phy_params->type = type;
- phy_params->interval = cpu_to_le16(interval);
- phy_params->window = cpu_to_le16(window);
-
- plen += sizeof(*phy_params);
- phy_params++;
- }
-
- hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_PARAMS,
- plen, ext_param_cp);
-
- memset(&ext_enable_cp, 0, sizeof(ext_enable_cp));
- ext_enable_cp.enable = LE_SCAN_ENABLE;
- ext_enable_cp.filter_dup = filter_dup;
-
- hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_ENABLE,
- sizeof(ext_enable_cp), &ext_enable_cp);
- } else {
- struct hci_cp_le_set_scan_param param_cp;
- struct hci_cp_le_set_scan_enable enable_cp;
-
- memset(&param_cp, 0, sizeof(param_cp));
- param_cp.type = type;
- param_cp.interval = cpu_to_le16(interval);
- param_cp.window = cpu_to_le16(window);
- param_cp.own_address_type = own_addr_type;
- param_cp.filter_policy = filter_policy;
- hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
- &param_cp);
-
- memset(&enable_cp, 0, sizeof(enable_cp));
- enable_cp.enable = LE_SCAN_ENABLE;
- enable_cp.filter_dup = filter_dup;
- hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
- &enable_cp);
- }
-}
-
/* Returns true if an le connection is in the scanning state */
static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
{
@@ -722,95 +398,6 @@ static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
return false;
}

-/* Ensure to call hci_req_add_le_scan_disable() first to disable the
- * controller based address resolution to be able to reconfigure
- * resolving list.
- */
-void hci_req_add_le_passive_scan(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- u8 own_addr_type;
- u8 filter_policy;
- u16 window, interval;
- /* Default is to enable duplicates filter */
- u8 filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
- /* Background scanning should run with address resolution */
- bool addr_resolv = true;
-
- if (hdev->scanning_paused) {
- bt_dev_dbg(hdev, "Scanning is paused for suspend");
- return;
- }
-
- /* Set require_privacy to false since no SCAN_REQ are send
- * during passive scanning. Not using an non-resolvable address
- * here is important so that peer devices using direct
- * advertising with our address will be correctly reported
- * by the controller.
- */
- if (hci_update_random_address(req, false, scan_use_rpa(hdev),
- &own_addr_type))
- return;
-
- if (hdev->enable_advmon_interleave_scan &&
- __hci_update_interleaved_scan(hdev))
- return;
-
- bt_dev_dbg(hdev, "interleave state %d", hdev->interleave_scan_state);
- /* Adding or removing entries from the accept list must
- * happen before enabling scanning. The controller does
- * not allow accept list modification while scanning.
- */
- filter_policy = update_accept_list(req);
-
- /* When the controller is using random resolvable addresses and
- * with that having LE privacy enabled, then controllers with
- * Extended Scanner Filter Policies support can now enable support
- * for handling directed advertising.
- *
- * So instead of using filter polices 0x00 (no accept list)
- * and 0x01 (accept list enabled) use the new filter policies
- * 0x02 (no accept list) and 0x03 (accept list enabled).
- */
- if (hci_dev_test_flag(hdev, HCI_PRIVACY) &&
- (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY))
- filter_policy |= 0x02;
-
- if (hdev->suspended) {
- window = hdev->le_scan_window_suspend;
- interval = hdev->le_scan_int_suspend;
- } else if (hci_is_le_conn_scanning(hdev)) {
- window = hdev->le_scan_window_connect;
- interval = hdev->le_scan_int_connect;
- } else if (hci_is_adv_monitoring(hdev)) {
- window = hdev->le_scan_window_adv_monitor;
- interval = hdev->le_scan_int_adv_monitor;
-
- /* Disable duplicates filter when scanning for advertisement
- * monitor for the following reasons.
- *
- * For HW pattern filtering (ex. MSFT), Realtek and Qualcomm
- * controllers ignore RSSI_Sampling_Period when the duplicates
- * filter is enabled.
- *
- * For SW pattern filtering, when we're not doing interleaved
- * scanning, it is necessary to disable duplicates filter,
- * otherwise hosts can only receive one advertisement and it's
- * impossible to know if a peer is still in range.
- */
- filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
- } else {
- window = hdev->le_scan_window;
- interval = hdev->le_scan_interval;
- }
-
- bt_dev_dbg(hdev, "LE passive scan with accept list = %d",
- filter_policy);
- hci_req_start_scan(req, LE_SCAN_PASSIVE, interval, window,
- own_addr_type, filter_policy, filter_dup,
- addr_resolv);
-}
-
static void cancel_adv_timeout(struct hci_dev *hdev)
{
if (hdev->adv_instance_timeout) {
@@ -1171,62 +758,6 @@ static void adv_timeout_expire(struct work_struct *work)
hci_dev_unlock(hdev);
}

-static int hci_req_add_le_interleaved_scan(struct hci_request *req,
- unsigned long opt)
-{
- struct hci_dev *hdev = req->hdev;
- int ret = 0;
-
- hci_dev_lock(hdev);
-
- if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
- hci_req_add_le_scan_disable(req, false);
- hci_req_add_le_passive_scan(req);
-
- switch (hdev->interleave_scan_state) {
- case INTERLEAVE_SCAN_ALLOWLIST:
- bt_dev_dbg(hdev, "next state: allowlist");
- hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
- break;
- case INTERLEAVE_SCAN_NO_FILTER:
- bt_dev_dbg(hdev, "next state: no filter");
- hdev->interleave_scan_state = INTERLEAVE_SCAN_ALLOWLIST;
- break;
- case INTERLEAVE_SCAN_NONE:
- BT_ERR("unexpected error");
- ret = -1;
- }
-
- hci_dev_unlock(hdev);
-
- return ret;
-}
-
-static void interleave_scan_work(struct work_struct *work)
-{
- struct hci_dev *hdev = container_of(work, struct hci_dev,
- interleave_scan.work);
- u8 status;
- unsigned long timeout;
-
- if (hdev->interleave_scan_state == INTERLEAVE_SCAN_ALLOWLIST) {
- timeout = msecs_to_jiffies(hdev->advmon_allowlist_duration);
- } else if (hdev->interleave_scan_state == INTERLEAVE_SCAN_NO_FILTER) {
- timeout = msecs_to_jiffies(hdev->advmon_no_filter_duration);
- } else {
- bt_dev_err(hdev, "unexpected error");
- return;
- }
-
- hci_req_sync(hdev, hci_req_add_le_interleaved_scan, 0,
- HCI_CMD_TIMEOUT, &status);
-
- /* Don't continue interleaving if it was canceled */
- if (is_interleave_scanning(hdev))
- queue_delayed_work(hdev->req_workqueue,
- &hdev->interleave_scan, timeout);
-}
-
int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
bool use_rpa, struct adv_info *adv_instance,
u8 *own_addr_type, bdaddr_t *rand_addr)
@@ -1978,7 +1509,6 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason)
void hci_request_setup(struct hci_dev *hdev)
{
INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire);
- INIT_DELAYED_WORK(&hdev->interleave_scan, interleave_scan_work);
}

void hci_request_cancel_all(struct hci_dev *hdev)
@@ -1989,6 +1519,4 @@ void hci_request_cancel_all(struct hci_dev *hdev)
cancel_delayed_work_sync(&hdev->adv_instance_expire);
hdev->adv_instance_timeout = 0;
}
-
- cancel_interleave_scan(hdev);
}
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 41e0b84f2042..093ad8ec469d 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -73,9 +73,6 @@ void __hci_req_update_name(struct hci_request *req);
void __hci_req_update_eir(struct hci_request *req);

void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn);
-void hci_req_add_le_passive_scan(struct hci_request *req);
-
-void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next);

void hci_req_disable_address_resolution(struct hci_dev *hdev);
void hci_req_reenable_advertising(struct hci_dev *hdev);
@@ -83,9 +80,6 @@ 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, u8 instance);
int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance);
-int hci_req_start_per_adv(struct hci_dev *hdev, u8 instance, u32 flags,
- u16 min_interval, u16 max_interval,
- u16 sync_interval);
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,
@@ -95,14 +89,8 @@ void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk,
bool force);

int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance);
-int __hci_req_setup_per_adv_instance(struct hci_request *req, u8 instance,
- u16 min_interval, u16 max_interval);
int __hci_req_start_ext_adv(struct hci_request *req, u8 instance);
-int __hci_req_start_per_adv(struct hci_request *req, u8 instance, u32 flags,
- u16 min_interval, u16 max_interval,
- u16 sync_interval);
int __hci_req_enable_ext_advertising(struct hci_request *req, u8 instance);
-int __hci_req_enable_per_advertising(struct hci_request *req, u8 instance);
int __hci_req_disable_ext_adv_instance(struct hci_request *req, u8 instance);
int __hci_req_remove_ext_adv_instance(struct hci_request *req, u8 instance);
void __hci_req_clear_ext_adv_sets(struct hci_request *req);
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 19d57ec0feb8..bf4a87c51548 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -465,6 +465,64 @@ static void le_scan_restart(struct work_struct *work)
hci_dev_unlock(hdev);
}

+static bool is_interleave_scanning(struct hci_dev *hdev)
+{
+ return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
+}
+
+static int hci_passive_scan_sync(struct hci_dev *hdev);
+static int add_le_interleaved_scan_sync(struct hci_dev *hdev, void *data)
+{
+ int ret = 0;
+ unsigned long timeout;
+
+ if (hdev->interleave_scan_state == INTERLEAVE_SCAN_ALLOWLIST) {
+ timeout = msecs_to_jiffies(hdev->advmon_allowlist_duration);
+ } else if (hdev->interleave_scan_state == INTERLEAVE_SCAN_NO_FILTER) {
+ timeout = msecs_to_jiffies(hdev->advmon_no_filter_duration);
+ } else {
+ bt_dev_err(hdev, "unexpected error");
+ return -1;
+ }
+
+ hci_passive_scan_sync(hdev);
+
+ switch (hdev->interleave_scan_state) {
+ case INTERLEAVE_SCAN_ALLOWLIST:
+ bt_dev_dbg(hdev, "next state: allowlist");
+ hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
+ break;
+ case INTERLEAVE_SCAN_NO_FILTER:
+ bt_dev_dbg(hdev, "next state: no filter");
+ hdev->interleave_scan_state = INTERLEAVE_SCAN_ALLOWLIST;
+ break;
+ case INTERLEAVE_SCAN_NONE:
+ BT_ERR("unexpected error");
+ ret = -1;
+ }
+
+ /* Don't continue interleaving if it was canceled */
+ if (is_interleave_scanning(hdev))
+ queue_delayed_work(hdev->req_workqueue,
+ &hdev->interleave_scan, timeout);
+
+ return ret;
+}
+
+static void interleave_scan(struct work_struct *work)
+{
+ struct hci_dev *hdev = container_of(work, struct hci_dev,
+ interleave_scan.work);
+
+ if (hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST &&
+ hdev->interleave_scan_state != INTERLEAVE_SCAN_NO_FILTER) {
+ bt_dev_err(hdev, "unexpected error");
+ return;
+ }
+
+ hci_cmd_sync_queue(hdev, add_le_interleaved_scan_sync, NULL, NULL);
+}
+
void hci_cmd_sync_init(struct hci_dev *hdev)
{
INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work);
@@ -474,6 +532,7 @@ void hci_cmd_sync_init(struct hci_dev *hdev)
INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work);
INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable);
INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart);
+ INIT_DELAYED_WORK(&hdev->interleave_scan, interleave_scan);
}

void hci_cmd_sync_clear(struct hci_dev *hdev)
@@ -1860,11 +1919,6 @@ static void hci_start_interleave_scan(struct hci_dev *hdev)
&hdev->interleave_scan, 0);
}

-static bool is_interleave_scanning(struct hci_dev *hdev)
-{
- return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
-}
-
static void cancel_interleave_scan(struct hci_dev *hdev)
{
bt_dev_dbg(hdev, "cancelling interleave scan");
@@ -4563,6 +4617,7 @@ int hci_dev_close_sync(struct hci_dev *hdev)
cancel_delayed_work(&hdev->ncmd_timer);
cancel_delayed_work(&hdev->le_scan_disable);
cancel_delayed_work(&hdev->le_scan_restart);
+ cancel_interleave_scan(hdev);

hci_request_cancel_all(hdev);

--
2.37.1


2022-08-01 17:20:25

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 07/10] Bluetooth: Delete unreference hci_request code

This patch deletes a whole bunch of code no longer reached because the
functionality was recoded using hci_sync.c

Signed-off-by: Brian Gix <[email protected]>
---
net/bluetooth/hci_request.c | 902 +-----------------------------------
net/bluetooth/hci_request.h | 29 --
2 files changed, 2 insertions(+), 929 deletions(-)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 9b9013c93f5b..458f21d4e0b2 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -273,336 +273,6 @@ void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
hci_req_add_ev(req, opcode, plen, param, 0);
}

-void __hci_req_write_fast_connectable(struct hci_request *req, bool enable)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_cp_write_page_scan_activity acp;
- u8 type;
-
- if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
- return;
-
- if (hdev->hci_ver < BLUETOOTH_VER_1_2)
- return;
-
- if (enable) {
- type = PAGE_SCAN_TYPE_INTERLACED;
-
- /* 160 msec page scan interval */
- acp.interval = cpu_to_le16(0x0100);
- } else {
- type = hdev->def_page_scan_type;
- acp.interval = cpu_to_le16(hdev->def_page_scan_int);
- }
-
- acp.window = cpu_to_le16(hdev->def_page_scan_window);
-
- if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval ||
- __cpu_to_le16(hdev->page_scan_window) != acp.window)
- hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
- sizeof(acp), &acp);
-
- if (hdev->page_scan_type != type)
- hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
-}
-
-void __hci_req_update_name(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_cp_write_local_name cp;
-
- memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
-
- hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
-}
-
-void __hci_req_update_eir(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_cp_write_eir cp;
-
- if (!hdev_is_powered(hdev))
- return;
-
- if (!lmp_ext_inq_capable(hdev))
- return;
-
- if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
- return;
-
- if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
- return;
-
- memset(&cp, 0, sizeof(cp));
-
- eir_create(hdev, cp.data);
-
- if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
- return;
-
- memcpy(hdev->eir, cp.data, sizeof(cp.data));
-
- hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
-}
-
-void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn)
-{
- struct hci_dev *hdev = req->hdev;
-
- if (hdev->scanning_paused) {
- bt_dev_dbg(hdev, "Scanning is paused for suspend");
- return;
- }
-
- if (use_ext_scan(hdev)) {
- struct hci_cp_le_set_ext_scan_enable cp;
-
- memset(&cp, 0, sizeof(cp));
- cp.enable = LE_SCAN_DISABLE;
- hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_ENABLE, sizeof(cp),
- &cp);
- } else {
- struct hci_cp_le_set_scan_enable cp;
-
- memset(&cp, 0, sizeof(cp));
- cp.enable = LE_SCAN_DISABLE;
- hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
- }
-
- /* Disable address resolution */
- if (hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION) && !rpa_le_conn) {
- __u8 enable = 0x00;
-
- hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
- }
-}
-
-/* Returns true if an le connection is in the scanning state */
-static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
-{
- struct hci_conn_hash *h = &hdev->conn_hash;
- struct hci_conn *c;
-
- rcu_read_lock();
-
- list_for_each_entry_rcu(c, &h->list, list) {
- if (c->type == LE_LINK && c->state == BT_CONNECT &&
- test_bit(HCI_CONN_SCANNING, &c->flags)) {
- rcu_read_unlock();
- return true;
- }
- }
-
- rcu_read_unlock();
-
- return false;
-}
-
-static bool adv_cur_instance_is_scannable(struct hci_dev *hdev)
-{
- return hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance);
-}
-
-void __hci_req_disable_advertising(struct hci_request *req)
-{
- if (ext_adv_capable(req->hdev)) {
- __hci_req_disable_ext_adv_instance(req, 0x00);
- } else {
- u8 enable = 0x00;
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
- }
-}
-
-static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
-{
- /* If privacy is not enabled don't use RPA */
- if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
- return false;
-
- /* If basic privacy mode is enabled use RPA */
- if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
- return true;
-
- /* If limited privacy mode is enabled don't use RPA if we're
- * both discoverable and bondable.
- */
- if ((flags & MGMT_ADV_FLAG_DISCOV) &&
- hci_dev_test_flag(hdev, HCI_BONDABLE))
- return false;
-
- /* We're neither bondable nor discoverable in the limited
- * privacy mode, therefore use RPA.
- */
- return true;
-}
-
-static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
-{
- /* If there is no connection we are OK to advertise. */
- if (hci_conn_num(hdev, LE_LINK) == 0)
- return true;
-
- /* Check le_states if there is any connection in peripheral role. */
- if (hdev->conn_hash.le_num_peripheral > 0) {
- /* Peripheral connection state and non connectable mode bit 20.
- */
- if (!connectable && !(hdev->le_states[2] & 0x10))
- return false;
-
- /* Peripheral connection state and connectable mode bit 38
- * and scannable bit 21.
- */
- if (connectable && (!(hdev->le_states[4] & 0x40) ||
- !(hdev->le_states[2] & 0x20)))
- return false;
- }
-
- /* Check le_states if there is any connection in central role. */
- if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) {
- /* Central connection state and non connectable mode bit 18. */
- if (!connectable && !(hdev->le_states[2] & 0x02))
- return false;
-
- /* Central connection state and connectable mode bit 35 and
- * scannable 19.
- */
- if (connectable && (!(hdev->le_states[4] & 0x08) ||
- !(hdev->le_states[2] & 0x08)))
- return false;
- }
-
- return true;
-}
-
-void __hci_req_enable_advertising(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- struct adv_info *adv;
- struct hci_cp_le_set_adv_param cp;
- u8 own_addr_type, enable = 0x01;
- bool connectable;
- u16 adv_min_interval, adv_max_interval;
- u32 flags;
-
- flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
- adv = hci_find_adv_instance(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.
- */
- connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
- mgmt_get_connectable(hdev);
-
- if (!is_advertising_allowed(hdev, connectable))
- return;
-
- if (hci_dev_test_flag(hdev, HCI_LE_ADV))
- __hci_req_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
- * as soon as the SET_ADV_ENABLE HCI command completes.
- */
- hci_dev_clear_flag(hdev, HCI_LE_ADV);
-
- /* Set require_privacy to true only when non-connectable
- * advertising is used. In that case it is fine to use a
- * non-resolvable private address.
- */
- if (hci_update_random_address(req, !connectable,
- adv_use_rpa(hdev, flags),
- &own_addr_type) < 0)
- return;
-
- memset(&cp, 0, sizeof(cp));
-
- if (adv) {
- adv_min_interval = adv->min_interval;
- adv_max_interval = adv->max_interval;
- } else {
- adv_min_interval = hdev->le_adv_min_interval;
- adv_max_interval = hdev->le_adv_max_interval;
- }
-
- if (connectable) {
- cp.type = LE_ADV_IND;
- } else {
- if (adv_cur_instance_is_scannable(hdev))
- cp.type = LE_ADV_SCAN_IND;
- else
- cp.type = LE_ADV_NONCONN_IND;
-
- if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) ||
- hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
- adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN;
- adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX;
- }
- }
-
- cp.min_interval = cpu_to_le16(adv_min_interval);
- cp.max_interval = cpu_to_le16(adv_max_interval);
- cp.own_address_type = own_addr_type;
- cp.channel_map = hdev->le_adv_channel_map;
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
-}
-
-void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)
-{
- struct hci_dev *hdev = req->hdev;
- u8 len;
-
- if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
- return;
-
- if (ext_adv_capable(hdev)) {
- struct {
- struct hci_cp_le_set_ext_scan_rsp_data cp;
- u8 data[HCI_MAX_EXT_AD_LENGTH];
- } pdu;
-
- memset(&pdu, 0, sizeof(pdu));
-
- len = eir_create_scan_rsp(hdev, instance, pdu.data);
-
- if (hdev->scan_rsp_data_len == len &&
- !memcmp(pdu.data, hdev->scan_rsp_data, len))
- return;
-
- memcpy(hdev->scan_rsp_data, pdu.data, len);
- hdev->scan_rsp_data_len = len;
-
- pdu.cp.handle = instance;
- pdu.cp.length = len;
- pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
- pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
-
- hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
- sizeof(pdu.cp) + len, &pdu.cp);
- } else {
- struct hci_cp_le_set_scan_rsp_data cp;
-
- memset(&cp, 0, sizeof(cp));
-
- len = eir_create_scan_rsp(hdev, instance, cp.data);
-
- if (hdev->scan_rsp_data_len == len &&
- !memcmp(cp.data, hdev->scan_rsp_data, len))
- return;
-
- memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
- hdev->scan_rsp_data_len = len;
-
- cp.length = len;
-
- hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
- }
-}
-
void __hci_req_update_adv_data(struct hci_request *req, u8 instance)
{
struct hci_dev *hdev = req->hdev;
@@ -667,58 +337,6 @@ int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance)
return hci_req_run(&req, NULL);
}

-static void enable_addr_resolution_complete(struct hci_dev *hdev, u8 status,
- u16 opcode)
-{
- BT_DBG("%s status %u", hdev->name, status);
-}
-
-void hci_req_disable_address_resolution(struct hci_dev *hdev)
-{
- struct hci_request req;
- __u8 enable = 0x00;
-
- if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
- return;
-
- hci_req_init(&req, hdev);
-
- hci_req_add(&req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
-
- hci_req_run(&req, enable_addr_resolution_complete);
-}
-
-static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
-{
- bt_dev_dbg(hdev, "status %u", status);
-}
-
-void hci_req_reenable_advertising(struct hci_dev *hdev)
-{
- struct hci_request req;
-
- if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
- list_empty(&hdev->adv_instances))
- return;
-
- hci_req_init(&req, hdev);
-
- if (hdev->cur_adv_instance) {
- __hci_req_schedule_adv_instance(&req, hdev->cur_adv_instance,
- true);
- } else {
- if (ext_adv_capable(hdev)) {
- __hci_req_start_ext_adv(&req, 0x00);
- } else {
- __hci_req_update_adv_data(&req, 0x00);
- __hci_req_update_scan_rsp_data(&req, 0x00);
- __hci_req_enable_advertising(&req);
- }
- }
-
- hci_req_run(&req, adv_enable_complete);
-}
-
int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
bool use_rpa, struct adv_info *adv_instance,
u8 *own_addr_type, bdaddr_t *rand_addr)
@@ -792,524 +410,8 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
return 0;
}

-void __hci_req_clear_ext_adv_sets(struct hci_request *req)
-{
- hci_req_add(req, HCI_OP_LE_CLEAR_ADV_SETS, 0, NULL);
-}
-
-static void set_random_addr(struct hci_request *req, bdaddr_t *rpa)
-{
- struct hci_dev *hdev = req->hdev;
-
- /* If we're advertising or initiating an LE connection we can't
- * go ahead and change the random address at this time. This is
- * because the eventual initiator address used for the
- * subsequently created connection will be undefined (some
- * controllers use the new address and others the one we had
- * when the operation started).
- *
- * In this kind of scenario skip the update and let the random
- * address be updated at the next cycle.
- */
- if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
- hci_lookup_le_connect(hdev)) {
- bt_dev_dbg(hdev, "Deferring random address update");
- hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
- return;
- }
-
- hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa);
-}
-
-int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
-{
- struct hci_cp_le_set_ext_adv_params cp;
- struct hci_dev *hdev = req->hdev;
- bool connectable;
- u32 flags;
- bdaddr_t random_addr;
- u8 own_addr_type;
- int err;
- struct adv_info *adv;
- bool secondary_adv, require_privacy;
-
- if (instance > 0) {
- adv = hci_find_adv_instance(hdev, instance);
- if (!adv)
- return -EINVAL;
- } else {
- adv = NULL;
- }
-
- flags = hci_adv_instance_flags(hdev, instance);
-
- /* If the "connectable" instance flag was not set, then choose between
- * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
- */
- connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
- mgmt_get_connectable(hdev);
-
- if (!is_advertising_allowed(hdev, connectable))
- return -EPERM;
-
- /* Set require_privacy to true only when non-connectable
- * advertising is used. In that case it is fine to use a
- * non-resolvable private address.
- */
- require_privacy = !connectable;
-
- /* Don't require privacy for periodic adv? */
- if (adv && adv->periodic)
- require_privacy = false;
-
- err = hci_get_random_address(hdev, require_privacy,
- adv_use_rpa(hdev, flags), adv,
- &own_addr_type, &random_addr);
- if (err < 0)
- return err;
-
- memset(&cp, 0, sizeof(cp));
-
- if (adv) {
- hci_cpu_to_le24(adv->min_interval, cp.min_interval);
- hci_cpu_to_le24(adv->max_interval, cp.max_interval);
- cp.tx_power = adv->tx_power;
- } else {
- hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
- hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
- cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE;
- }
-
- secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);
-
- if (connectable) {
- if (secondary_adv)
- cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
- else
- cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
- } else if (hci_adv_instance_is_scannable(hdev, instance) ||
- (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
- if (secondary_adv)
- cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
- else
- cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
- } else {
- /* Secondary and periodic cannot use legacy PDUs */
- if (secondary_adv || (adv && adv->periodic))
- cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
- else
- cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
- }
-
- cp.own_addr_type = own_addr_type;
- cp.channel_map = hdev->le_adv_channel_map;
- cp.handle = instance;
-
- if (flags & MGMT_ADV_FLAG_SEC_2M) {
- cp.primary_phy = HCI_ADV_PHY_1M;
- cp.secondary_phy = HCI_ADV_PHY_2M;
- } else if (flags & MGMT_ADV_FLAG_SEC_CODED) {
- cp.primary_phy = HCI_ADV_PHY_CODED;
- cp.secondary_phy = HCI_ADV_PHY_CODED;
- } else {
- /* In all other cases use 1M */
- cp.primary_phy = HCI_ADV_PHY_1M;
- cp.secondary_phy = HCI_ADV_PHY_1M;
- }
-
- hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_PARAMS, sizeof(cp), &cp);
-
- if ((own_addr_type == ADDR_LE_DEV_RANDOM ||
- own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
- bacmp(&random_addr, BDADDR_ANY)) {
- struct hci_cp_le_set_adv_set_rand_addr cp;
-
- /* Check if random address need to be updated */
- if (adv) {
- if (!bacmp(&random_addr, &adv->random_addr))
- return 0;
- } else {
- if (!bacmp(&random_addr, &hdev->random_addr))
- return 0;
- /* Instance 0x00 doesn't have an adv_info, instead it
- * uses hdev->random_addr to track its address so
- * whenever it needs to be updated this also set the
- * random address since hdev->random_addr is shared with
- * scan state machine.
- */
- set_random_addr(req, &random_addr);
- }
-
- memset(&cp, 0, sizeof(cp));
-
- cp.handle = instance;
- bacpy(&cp.bdaddr, &random_addr);
-
- hci_req_add(req,
- HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
- sizeof(cp), &cp);
- }
-
- return 0;
-}
-
-int __hci_req_enable_ext_advertising(struct hci_request *req, u8 instance)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_cp_le_set_ext_adv_enable *cp;
- struct hci_cp_ext_adv_set *adv_set;
- u8 data[sizeof(*cp) + sizeof(*adv_set) * 1];
- struct adv_info *adv_instance;
-
- if (instance > 0) {
- adv_instance = hci_find_adv_instance(hdev, instance);
- if (!adv_instance)
- return -EINVAL;
- } else {
- adv_instance = NULL;
- }
-
- cp = (void *) data;
- adv_set = (void *) cp->data;
-
- memset(cp, 0, sizeof(*cp));
-
- cp->enable = 0x01;
- cp->num_of_sets = 0x01;
-
- memset(adv_set, 0, sizeof(*adv_set));
-
- adv_set->handle = instance;
-
- /* Set duration per instance since controller is responsible for
- * scheduling it.
- */
- if (adv_instance && adv_instance->duration) {
- u16 duration = adv_instance->timeout * MSEC_PER_SEC;
-
- /* Time = N * 10 ms */
- adv_set->duration = cpu_to_le16(duration / 10);
- }
-
- hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_ENABLE,
- sizeof(*cp) + sizeof(*adv_set) * cp->num_of_sets,
- data);
-
- return 0;
-}
-
-int __hci_req_disable_ext_adv_instance(struct hci_request *req, u8 instance)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_cp_le_set_ext_adv_enable *cp;
- struct hci_cp_ext_adv_set *adv_set;
- u8 data[sizeof(*cp) + sizeof(*adv_set) * 1];
- u8 req_size;
-
- /* If request specifies an instance that doesn't exist, fail */
- if (instance > 0 && !hci_find_adv_instance(hdev, instance))
- return -EINVAL;
-
- memset(data, 0, sizeof(data));
-
- cp = (void *)data;
- adv_set = (void *)cp->data;
-
- /* Instance 0x00 indicates all advertising instances will be disabled */
- cp->num_of_sets = !!instance;
- cp->enable = 0x00;
-
- adv_set->handle = instance;
-
- req_size = sizeof(*cp) + sizeof(*adv_set) * cp->num_of_sets;
- hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_ENABLE, req_size, data);
-
- return 0;
-}
-
-int __hci_req_remove_ext_adv_instance(struct hci_request *req, u8 instance)
-{
- struct hci_dev *hdev = req->hdev;
-
- /* If request specifies an instance that doesn't exist, fail */
- if (instance > 0 && !hci_find_adv_instance(hdev, instance))
- return -EINVAL;
-
- hci_req_add(req, HCI_OP_LE_REMOVE_ADV_SET, sizeof(instance), &instance);
-
- return 0;
-}
-
-int __hci_req_start_ext_adv(struct hci_request *req, u8 instance)
-{
- struct hci_dev *hdev = req->hdev;
- struct adv_info *adv_instance = hci_find_adv_instance(hdev, instance);
- int err;
-
- /* If instance isn't pending, the chip knows about it, and it's safe to
- * disable
- */
- if (adv_instance && !adv_instance->pending)
- __hci_req_disable_ext_adv_instance(req, instance);
-
- err = __hci_req_setup_ext_adv_instance(req, instance);
- if (err < 0)
- return err;
-
- __hci_req_update_scan_rsp_data(req, instance);
- __hci_req_enable_ext_advertising(req, instance);
-
- return 0;
-}
-
-int __hci_req_schedule_adv_instance(struct hci_request *req, u8 instance,
- bool force)
-{
- struct hci_dev *hdev = req->hdev;
- struct adv_info *adv_instance = NULL;
- u16 timeout;
-
- if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
- list_empty(&hdev->adv_instances))
- return -EPERM;
-
- if (hdev->adv_instance_timeout)
- return -EBUSY;
-
- adv_instance = hci_find_adv_instance(hdev, instance);
- if (!adv_instance)
- return -ENOENT;
-
- /* A zero timeout means unlimited advertising. As long as there is
- * only one instance, duration should be ignored. We still set a timeout
- * in case further instances are being added later on.
- *
- * If the remaining lifetime of the instance is more than the duration
- * then the timeout corresponds to the duration, otherwise it will be
- * reduced to the remaining instance lifetime.
- */
- if (adv_instance->timeout == 0 ||
- adv_instance->duration <= adv_instance->remaining_time)
- timeout = adv_instance->duration;
- else
- timeout = adv_instance->remaining_time;
-
- /* The remaining time is being reduced unless the instance is being
- * advertised without time limit.
- */
- if (adv_instance->timeout)
- adv_instance->remaining_time =
- adv_instance->remaining_time - timeout;
-
- /* Only use work for scheduling instances with legacy advertising */
- if (!ext_adv_capable(hdev)) {
- hdev->adv_instance_timeout = timeout;
- queue_delayed_work(hdev->req_workqueue,
- &hdev->adv_instance_expire,
- msecs_to_jiffies(timeout * 1000));
- }
-
- /* If we're just re-scheduling the same instance again then do not
- * execute any HCI commands. This happens when a single instance is
- * being advertised.
- */
- if (!force && hdev->cur_adv_instance == instance &&
- hci_dev_test_flag(hdev, HCI_LE_ADV))
- return 0;
-
- hdev->cur_adv_instance = instance;
- if (ext_adv_capable(hdev)) {
- __hci_req_start_ext_adv(req, instance);
- } else {
- __hci_req_update_adv_data(req, instance);
- __hci_req_update_scan_rsp_data(req, instance);
- __hci_req_enable_advertising(req);
- }
-
- return 0;
-}
-
-int hci_update_random_address(struct hci_request *req, bool require_privacy,
- bool use_rpa, u8 *own_addr_type)
-{
- struct hci_dev *hdev = req->hdev;
- int err;
-
- /* If privacy is enabled use a resolvable private address. If
- * current RPA has expired or there is something else than
- * the current RPA in use, then generate a new one.
- */
- if (use_rpa) {
- /* If Controller supports LL Privacy use own address type is
- * 0x03
- */
- if (use_ll_privacy(hdev))
- *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
- else
- *own_addr_type = ADDR_LE_DEV_RANDOM;
-
- if (rpa_valid(hdev))
- return 0;
-
- err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
- if (err < 0) {
- bt_dev_err(hdev, "failed to generate new RPA");
- return err;
- }
-
- set_random_addr(req, &hdev->rpa);
-
- return 0;
- }
-
- /* In case of required privacy without resolvable private address,
- * use an non-resolvable private address. This is useful for active
- * scanning and non-connectable advertising.
- */
- if (require_privacy) {
- bdaddr_t nrpa;
-
- while (true) {
- /* The non-resolvable private address is generated
- * from random six bytes with the two most significant
- * bits cleared.
- */
- get_random_bytes(&nrpa, 6);
- nrpa.b[5] &= 0x3f;
-
- /* The non-resolvable private address shall not be
- * equal to the public address.
- */
- if (bacmp(&hdev->bdaddr, &nrpa))
- break;
- }
-
- *own_addr_type = ADDR_LE_DEV_RANDOM;
- set_random_addr(req, &nrpa);
- return 0;
- }
-
- /* If forcing static address is in use or there is no public
- * address use the static address as random address (but skip
- * the HCI command if the current random address is already the
- * static one.
- *
- * In case BR/EDR has been disabled on a dual-mode controller
- * and a static address has been configured, then use that
- * address instead of the public BR/EDR address.
- */
- if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
- !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
- (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
- bacmp(&hdev->static_addr, BDADDR_ANY))) {
- *own_addr_type = ADDR_LE_DEV_RANDOM;
- if (bacmp(&hdev->static_addr, &hdev->random_addr))
- hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6,
- &hdev->static_addr);
- return 0;
- }
-
- /* Neither privacy nor static address is being used so use a
- * public address.
- */
- *own_addr_type = ADDR_LE_DEV_PUBLIC;
-
- return 0;
-}
-
-static bool disconnected_accept_list_entries(struct hci_dev *hdev)
-{
- struct bdaddr_list *b;
-
- list_for_each_entry(b, &hdev->accept_list, list) {
- struct hci_conn *conn;
-
- conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr);
- if (!conn)
- return true;
-
- if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
- return true;
- }
-
- return false;
-}
-
-void __hci_req_update_scan(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- u8 scan;
-
- if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
- return;
-
- if (!hdev_is_powered(hdev))
- return;
-
- if (mgmt_powering_down(hdev))
- return;
-
- if (hdev->scanning_paused)
- return;
-
- if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) ||
- disconnected_accept_list_entries(hdev))
- scan = SCAN_PAGE;
- else
- scan = SCAN_DISABLED;
-
- if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
- scan |= SCAN_INQUIRY;
-
- if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) &&
- test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY))
- return;
-
- hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
-}
-
-static u8 get_service_classes(struct hci_dev *hdev)
-{
- struct bt_uuid *uuid;
- u8 val = 0;
-
- list_for_each_entry(uuid, &hdev->uuids, list)
- val |= uuid->svc_hint;
-
- return val;
-}
-
-void __hci_req_update_class(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- u8 cod[3];
-
- bt_dev_dbg(hdev, "");
-
- if (!hdev_is_powered(hdev))
- return;
-
- if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
- return;
-
- if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
- return;
-
- cod[0] = hdev->minor_class;
- cod[1] = hdev->major_class;
- cod[2] = get_service_classes(hdev);
-
- if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
- cod[1] |= 0x20;
-
- if (memcmp(cod, hdev->dev_class, 3) == 0)
- return;
-
- hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
-}
-
-void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
- u8 reason)
+static void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
+ u8 reason)
{
switch (conn->state) {
case BT_CONNECTED:
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 30a28550d90c..8e42b892b679 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -68,40 +68,11 @@ int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req,
struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
const void *param);

-void __hci_req_write_fast_connectable(struct hci_request *req, bool enable);
-void __hci_req_update_name(struct hci_request *req);
-void __hci_req_update_eir(struct hci_request *req);
-
-void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn);
-
-void hci_req_disable_address_resolution(struct hci_dev *hdev);
-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, 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);
-int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance);
-int __hci_req_start_ext_adv(struct hci_request *req, u8 instance);
-int __hci_req_enable_ext_advertising(struct hci_request *req, u8 instance);
-int __hci_req_disable_ext_adv_instance(struct hci_request *req, u8 instance);
-int __hci_req_remove_ext_adv_instance(struct hci_request *req, u8 instance);
-void __hci_req_clear_ext_adv_sets(struct hci_request *req);
int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
bool use_rpa, struct adv_info *adv_instance,
u8 *own_addr_type, bdaddr_t *rand_addr);

-void __hci_req_update_class(struct hci_request *req);
-
-/* Returns true if HCI commands were queued */
-void __hci_req_update_scan(struct hci_request *req);
-
-int hci_update_random_address(struct hci_request *req, bool require_privacy,
- bool use_rpa, u8 *own_addr_type);
-
int hci_abort_conn(struct hci_conn *conn, u8 reason);
-void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
- u8 reason);
--
2.37.1


2022-08-01 17:20:59

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 08/10] Bluetooth: move hci_get_random_address() to hci_sync

This function has no dependencies on the deprecated hci_request
mechanism, so has been moved unchanged to hci_sync.c

Signed-off-by: Brian Gix <[email protected]>
---
include/net/bluetooth/hci_sync.h | 5 +++
net/bluetooth/hci_request.c | 73 --------------------------------
net/bluetooth/hci_request.h | 4 --
net/bluetooth/hci_sync.c | 73 ++++++++++++++++++++++++++++++++
4 files changed, 78 insertions(+), 77 deletions(-)

diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h
index aea950440b9d..b6b975c2ed3e 100644
--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -16,6 +16,7 @@ struct hci_cmd_sync_work_entry {
hci_cmd_sync_work_destroy_t destroy;
};

+struct adv_info;
/* Function with sync suffix shall not be called with hdev->lock held as they
* wait the command to complete and in the meantime an event could be received
* which could attempt to acquire hdev->lock causing a deadlock.
@@ -51,6 +52,10 @@ int hci_update_class_sync(struct hci_dev *hdev);
int hci_update_name_sync(struct hci_dev *hdev);
int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode);

+int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
+ bool use_rpa, struct adv_info *adv_instance,
+ u8 *own_addr_type, bdaddr_t *rand_addr);
+
int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,
bool rpa, u8 *own_addr_type);

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 458f21d4e0b2..31b75253a7eb 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -337,79 +337,6 @@ int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance)
return hci_req_run(&req, NULL);
}

-int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
- bool use_rpa, struct adv_info *adv_instance,
- u8 *own_addr_type, bdaddr_t *rand_addr)
-{
- int err;
-
- bacpy(rand_addr, BDADDR_ANY);
-
- /* If privacy is enabled use a resolvable private address. If
- * current RPA has expired then generate a new one.
- */
- if (use_rpa) {
- /* If Controller supports LL Privacy use own address type is
- * 0x03
- */
- if (use_ll_privacy(hdev))
- *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
- else
- *own_addr_type = ADDR_LE_DEV_RANDOM;
-
- if (adv_instance) {
- if (adv_rpa_valid(adv_instance))
- return 0;
- } else {
- if (rpa_valid(hdev))
- return 0;
- }
-
- err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
- if (err < 0) {
- bt_dev_err(hdev, "failed to generate new RPA");
- return err;
- }
-
- bacpy(rand_addr, &hdev->rpa);
-
- return 0;
- }
-
- /* In case of required privacy without resolvable private address,
- * use an non-resolvable private address. This is useful for
- * non-connectable advertising.
- */
- if (require_privacy) {
- bdaddr_t nrpa;
-
- while (true) {
- /* The non-resolvable private address is generated
- * from random six bytes with the two most significant
- * bits cleared.
- */
- get_random_bytes(&nrpa, 6);
- nrpa.b[5] &= 0x3f;
-
- /* The non-resolvable private address shall not be
- * equal to the public address.
- */
- if (bacmp(&hdev->bdaddr, &nrpa))
- break;
- }
-
- *own_addr_type = ADDR_LE_DEV_RANDOM;
- bacpy(rand_addr, &nrpa);
-
- return 0;
- }
-
- /* No privacy so use a public address. */
- *own_addr_type = ADDR_LE_DEV_PUBLIC;
-
- return 0;
-}
-
static void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
u8 reason)
{
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 8e42b892b679..9792c34a681c 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -71,8 +71,4 @@ struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
void __hci_req_update_adv_data(struct hci_request *req, u8 instance);
int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance);

-int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
- bool use_rpa, struct adv_info *adv_instance,
- u8 *own_addr_type, bdaddr_t *rand_addr);
-
int hci_abort_conn(struct hci_conn *conn, u8 reason);
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index bb664fa9f95e..f2f3a0e8fbaf 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -6047,3 +6047,76 @@ int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle)
return __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_TERM_SYNC,
sizeof(cp), &cp, HCI_CMD_TIMEOUT);
}
+
+int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
+ bool use_rpa, struct adv_info *adv_instance,
+ u8 *own_addr_type, bdaddr_t *rand_addr)
+{
+ int err;
+
+ bacpy(rand_addr, BDADDR_ANY);
+
+ /* If privacy is enabled use a resolvable private address. If
+ * current RPA has expired then generate a new one.
+ */
+ if (use_rpa) {
+ /* If Controller supports LL Privacy use own address type is
+ * 0x03
+ */
+ if (use_ll_privacy(hdev))
+ *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
+ else
+ *own_addr_type = ADDR_LE_DEV_RANDOM;
+
+ if (adv_instance) {
+ if (adv_rpa_valid(adv_instance))
+ return 0;
+ } else {
+ if (rpa_valid(hdev))
+ return 0;
+ }
+
+ err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
+ if (err < 0) {
+ bt_dev_err(hdev, "failed to generate new RPA");
+ return err;
+ }
+
+ bacpy(rand_addr, &hdev->rpa);
+
+ return 0;
+ }
+
+ /* In case of required privacy without resolvable private address,
+ * use an non-resolvable private address. This is useful for
+ * non-connectable advertising.
+ */
+ if (require_privacy) {
+ bdaddr_t nrpa;
+
+ while (true) {
+ /* The non-resolvable private address is generated
+ * from random six bytes with the two most significant
+ * bits cleared.
+ */
+ get_random_bytes(&nrpa, 6);
+ nrpa.b[5] &= 0x3f;
+
+ /* The non-resolvable private address shall not be
+ * equal to the public address.
+ */
+ if (bacmp(&hdev->bdaddr, &nrpa))
+ break;
+ }
+
+ *own_addr_type = ADDR_LE_DEV_RANDOM;
+ bacpy(rand_addr, &nrpa);
+
+ return 0;
+ }
+
+ /* No privacy so use a public address. */
+ *own_addr_type = ADDR_LE_DEV_PUBLIC;
+
+ return 0;
+}
--
2.37.1


2022-08-01 17:21:17

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 10/10] Bluetooth: Convert hci_abort_conn to hci_sync

The prior hci_abort_conn() used the deprecated hci_request mechanism.
This version has been rewritten to use hci_sync.c

Signed-off-by: Brian Gix <[email protected]>
---
include/net/bluetooth/hci_sync.h | 1 +
net/bluetooth/hci_conn.c | 6 +-
net/bluetooth/hci_request.c | 93 ----------------------
net/bluetooth/hci_request.h | 2 -
net/bluetooth/hci_sync.c | 130 +++++++++++++++++++++++++++++++
net/bluetooth/mgmt.c | 2 +-
6 files changed, 135 insertions(+), 99 deletions(-)

diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h
index 17f5a4c32f36..1816222c8fbc 100644
--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -129,3 +129,4 @@ int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason);
int hci_le_big_terminate_sync(struct hci_dev *hdev, u8 handle);

int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle);
+int hci_abort_conn(struct hci_conn *conn, u8 reason, bool async);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 2bda50d9e3ab..4fbe35f74f94 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -286,7 +286,7 @@ int hci_disconnect(struct hci_conn *conn, __u8 reason)
&clkoff_cp);
}

- return hci_abort_conn(conn, reason);
+ return hci_abort_conn(conn, reason, true);
}

static void hci_add_sco(struct hci_conn *conn, __u16 handle)
@@ -662,7 +662,7 @@ static void hci_conn_timeout(struct work_struct *work)
return;
}

- hci_abort_conn(conn, hci_proto_disconn_ind(conn));
+ hci_abort_conn(conn, hci_proto_disconn_ind(conn), false);
}

/* Enter sniff mode */
@@ -748,7 +748,7 @@ static void le_conn_timeout(struct work_struct *work)
return;
}

- hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
+ hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM, false);
}

struct iso_list_data {
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index c6bfb2e75e52..064026bb6162 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -272,96 +272,3 @@ void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
bt_dev_dbg(req->hdev, "HCI_REQ-0x%4.4x", opcode);
hci_req_add_ev(req, opcode, plen, param, 0);
}
-
-static void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
- u8 reason)
-{
- switch (conn->state) {
- case BT_CONNECTED:
- case BT_CONFIG:
- if (conn->type == AMP_LINK) {
- struct hci_cp_disconn_phy_link cp;
-
- cp.phy_handle = HCI_PHY_HANDLE(conn->handle);
- cp.reason = reason;
- hci_req_add(req, HCI_OP_DISCONN_PHY_LINK, sizeof(cp),
- &cp);
- } else {
- struct hci_cp_disconnect dc;
-
- dc.handle = cpu_to_le16(conn->handle);
- dc.reason = reason;
- hci_req_add(req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
- }
-
- conn->state = BT_DISCONN;
-
- break;
- case BT_CONNECT:
- if (conn->type == LE_LINK) {
- if (test_bit(HCI_CONN_SCANNING, &conn->flags))
- break;
- hci_req_add(req, HCI_OP_LE_CREATE_CONN_CANCEL,
- 0, NULL);
- } else if (conn->type == ACL_LINK) {
- if (req->hdev->hci_ver < BLUETOOTH_VER_1_2)
- break;
- hci_req_add(req, HCI_OP_CREATE_CONN_CANCEL,
- 6, &conn->dst);
- }
- break;
- case BT_CONNECT2:
- if (conn->type == ACL_LINK) {
- struct hci_cp_reject_conn_req rej;
-
- bacpy(&rej.bdaddr, &conn->dst);
- rej.reason = reason;
-
- hci_req_add(req, HCI_OP_REJECT_CONN_REQ,
- sizeof(rej), &rej);
- } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
- struct hci_cp_reject_sync_conn_req rej;
-
- bacpy(&rej.bdaddr, &conn->dst);
-
- /* SCO rejection has its own limited set of
- * allowed error values (0x0D-0x0F) which isn't
- * compatible with most values passed to this
- * function. To be safe hard-code one of the
- * values that's suitable for SCO.
- */
- rej.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
-
- hci_req_add(req, HCI_OP_REJECT_SYNC_CONN_REQ,
- sizeof(rej), &rej);
- }
- break;
- default:
- conn->state = BT_CLOSED;
- break;
- }
-}
-
-static void abort_conn_complete(struct hci_dev *hdev, u8 status, u16 opcode)
-{
- if (status)
- bt_dev_dbg(hdev, "Failed to abort connection: status 0x%2.2x", status);
-}
-
-int hci_abort_conn(struct hci_conn *conn, u8 reason)
-{
- struct hci_request req;
- int err;
-
- hci_req_init(&req, conn->hdev);
-
- __hci_abort_conn(&req, conn, reason);
-
- err = hci_req_run(&req, abort_conn_complete);
- if (err && err != -ENODATA) {
- bt_dev_err(conn->hdev, "failed to run HCI request: err %d", err);
- return err;
- }
-
- return 0;
-}
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index e5ecd4e4b686..763a9e6db976 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -67,5 +67,3 @@ int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req,

struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
const void *param);
-
-int hci_abort_conn(struct hci_conn *conn, u8 reason);
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 0b0563a245f7..a5648f5b07c2 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -6140,3 +6140,133 @@ int hci_update_adv_data(struct hci_dev *hdev, u8 instance)
*inst_ptr = instance;
return hci_cmd_sync_queue(hdev, _update_adv_data_sync, inst_ptr, NULL);
}
+
+struct conn_reason {
+ struct hci_conn *conn;
+ u8 reason;
+};
+
+static int _abort_conn_sync(struct hci_dev *hdev, void *data)
+{
+ struct hci_conn *conn = ((struct conn_reason *)data)->conn;
+ u8 reason = ((struct conn_reason *)data)->reason;
+ int err = 0;
+
+ kfree(data);
+
+ switch (conn->state) {
+ case BT_CONNECTED:
+ case BT_CONFIG:
+ if (conn->type == AMP_LINK) {
+ struct hci_cp_disconn_phy_link cp;
+
+ cp.phy_handle = HCI_PHY_HANDLE(conn->handle);
+ cp.reason = reason;
+ err = __hci_cmd_sync_status(hdev,
+ HCI_OP_DISCONN_PHY_LINK,
+ sizeof(cp), &cp,
+ HCI_CMD_TIMEOUT);
+ } else {
+ struct hci_cp_disconnect dc;
+
+ dc.handle = cpu_to_le16(conn->handle);
+ dc.reason = reason;
+ err = __hci_cmd_sync_status(hdev,
+ HCI_OP_DISCONNECT,
+ sizeof(dc), &dc,
+ HCI_CMD_TIMEOUT);
+ }
+ conn->state = BT_DISCONN;
+ break;
+ case BT_CONNECT:
+ if (conn->type == LE_LINK) {
+ if (test_bit(HCI_CONN_SCANNING, &conn->flags))
+ break;
+
+ err = __hci_cmd_sync_status(hdev,
+ HCI_OP_LE_CREATE_CONN_CANCEL,
+ 0, NULL, HCI_CMD_TIMEOUT);
+ } else if (conn->type == ACL_LINK) {
+ if (hdev->hci_ver < BLUETOOTH_VER_1_2)
+ break;
+
+ err = __hci_cmd_sync_status(hdev,
+ HCI_OP_CREATE_CONN_CANCEL,
+ 6, &conn->dst,
+ HCI_CMD_TIMEOUT);
+ }
+ break;
+ case BT_CONNECT2:
+ if (conn->type == ACL_LINK) {
+ struct hci_cp_reject_conn_req rej;
+
+ bacpy(&rej.bdaddr, &conn->dst);
+ rej.reason = reason;
+
+ err = __hci_cmd_sync_status(hdev,
+ HCI_OP_REJECT_CONN_REQ,
+ sizeof(rej), &rej,
+ HCI_CMD_TIMEOUT);
+
+ } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
+ struct hci_cp_reject_sync_conn_req rej;
+
+ bacpy(&rej.bdaddr, &conn->dst);
+
+ /* SCO rejection has its own limited set of
+ * allowed error values (0x0D-0x0F) which isn't
+ * compatible with most values passed to this
+ * function. To be safe hard-code one of the
+ * values that's suitable for SCO.
+ */
+ rej.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
+
+ err = __hci_cmd_sync_status(hdev,
+ HCI_OP_REJECT_SYNC_CONN_REQ,
+ sizeof(rej), &rej,
+ HCI_CMD_TIMEOUT);
+ }
+ break;
+ default:
+ conn->state = BT_CLOSED;
+ break;
+ }
+
+ return err;
+}
+
+static void abort_conn_complete(struct hci_dev *hdev, void *data, int err)
+{
+ if (err)
+ bt_dev_dbg(hdev, "Failed to abort connection: err %d", err);
+}
+
+int hci_abort_conn(struct hci_conn *conn, u8 reason, bool async)
+{
+ struct conn_reason *conn_reason = kmalloc(sizeof(*conn_reason),
+ GFP_KERNEL);
+ int err;
+
+ if (!conn_reason)
+ return -ENOMEM;
+
+ conn_reason->conn = conn;
+ conn_reason->reason = reason;
+
+ if (async) {
+ err = hci_cmd_sync_queue(conn->hdev, _abort_conn_sync,
+ conn_reason, abort_conn_complete);
+
+ if (err)
+ kfree(conn_reason);
+ } else {
+ err = _abort_conn_sync(conn->hdev, conn_reason);
+ }
+
+ if (err && err != -ENODATA) {
+ bt_dev_err(conn->hdev, "failed to run HCI req: err %d", err);
+ return err;
+ }
+
+ return 0;
+}
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a6af51d39caa..06d93539f634 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3235,7 +3235,7 @@ static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
le_addr_type(addr->type));

if (conn->conn_reason == CONN_REASON_PAIR_DEVICE)
- hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
+ hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM, true);

unlock:
hci_dev_unlock(hdev);
--
2.37.1


2022-08-01 17:21:30

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 03/10] Bluetooth: Delete unused hci_req_stop_discovery()

hci_req_stop_discovery has been deprecated in favor of
hci_stop_discovery_sync() as part of transition to hci_sync.c

Signed-off-by: Brian Gix <[email protected]>
---
net/bluetooth/hci_request.c | 48 -------------------------------------
net/bluetooth/hci_request.h | 2 --
2 files changed, 50 deletions(-)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 114af7350363..ef0a5ec067b6 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1975,54 +1975,6 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason)
return 0;
}

-bool hci_req_stop_discovery(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- struct discovery_state *d = &hdev->discovery;
- struct hci_cp_remote_name_req_cancel cp;
- struct inquiry_entry *e;
- bool ret = false;
-
- bt_dev_dbg(hdev, "state %u", hdev->discovery.state);
-
- if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) {
- if (test_bit(HCI_INQUIRY, &hdev->flags))
- hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
-
- if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
- cancel_delayed_work(&hdev->le_scan_disable);
- cancel_delayed_work(&hdev->le_scan_restart);
- hci_req_add_le_scan_disable(req, false);
- }
-
- ret = true;
- } else {
- /* Passive scanning */
- if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
- hci_req_add_le_scan_disable(req, false);
- ret = true;
- }
- }
-
- /* No further actions needed for LE-only discovery */
- if (d->type == DISCOV_TYPE_LE)
- return ret;
-
- if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) {
- e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
- NAME_PENDING);
- if (!e)
- return ret;
-
- bacpy(&cp.bdaddr, &e->data.bdaddr);
- hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
- &cp);
- ret = true;
- }
-
- return ret;
-}
-
static void config_data_path_complete(struct hci_dev *hdev, u8 status,
u16 opcode)
{
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 39d001fa3acf..faf6d9a51a91 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -113,8 +113,6 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
void __hci_req_update_class(struct hci_request *req);

/* Returns true if HCI commands were queued */
-bool hci_req_stop_discovery(struct hci_request *req);
-
int hci_req_configure_datapath(struct hci_dev *hdev, struct bt_codec *codec);

void __hci_req_update_scan(struct hci_request *req);
--
2.37.1


2022-08-01 17:21:31

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 06/10] Bluetooth: Move Adv Instance timer to hci_sync

The Advertising Instance expiration timer adv_instance_expire was
handled with the deprecated hci_request mechanism, rather than it's
replacement: hci_sync.

Signed-off-by: Brian Gix <[email protected]>
---
include/net/bluetooth/hci_sync.h | 3 +-
net/bluetooth/hci_core.c | 2 -
net/bluetooth/hci_request.c | 120 ----------------------------
net/bluetooth/hci_request.h | 7 --
net/bluetooth/hci_sync.c | 131 ++++++++++++++++++++++++++++---
net/bluetooth/mgmt.c | 5 +-
6 files changed, 126 insertions(+), 142 deletions(-)

diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h
index 3843f5060c73..aea950440b9d 100644
--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -72,7 +72,8 @@ int hci_start_per_adv_sync(struct hci_dev *hdev, u8 instance, u8 data_len,
int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk,
u8 instance, bool force);
int hci_disable_advertising_sync(struct hci_dev *hdev);
-
+int hci_clear_adv_instance_sync(struct hci_dev *hdev, struct sock *sk,
+ u8 instance, bool force);
int hci_update_passive_scan_sync(struct hci_dev *hdev);
int hci_update_passive_scan(struct hci_dev *hdev);
int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b3a5a3cc9372..3209b39899c1 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2524,8 +2524,6 @@ struct hci_dev *hci_alloc_dev_priv(int sizeof_priv)
INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout);
INIT_DELAYED_WORK(&hdev->ncmd_timer, hci_ncmd_timeout);

- hci_request_setup(hdev);
-
hci_init_sysfs(hdev);
discovery_init(hdev);

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index fe70be6e1981..9b9013c93f5b 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -398,14 +398,6 @@ static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
return false;
}

-static void cancel_adv_timeout(struct hci_dev *hdev)
-{
- if (hdev->adv_instance_timeout) {
- hdev->adv_instance_timeout = 0;
- cancel_delayed_work(&hdev->adv_instance_expire);
- }
-}
-
static bool adv_cur_instance_is_scannable(struct hci_dev *hdev)
{
return hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance);
@@ -727,37 +719,6 @@ void hci_req_reenable_advertising(struct hci_dev *hdev)
hci_req_run(&req, adv_enable_complete);
}

-static void adv_timeout_expire(struct work_struct *work)
-{
- struct hci_dev *hdev = container_of(work, struct hci_dev,
- adv_instance_expire.work);
-
- struct hci_request req;
- u8 instance;
-
- bt_dev_dbg(hdev, "");
-
- hci_dev_lock(hdev);
-
- hdev->adv_instance_timeout = 0;
-
- instance = hdev->cur_adv_instance;
- if (instance == 0x00)
- goto unlock;
-
- hci_req_init(&req, hdev);
-
- hci_req_clear_adv_instance(hdev, NULL, &req, instance, false);
-
- if (list_empty(&hdev->adv_instances))
- __hci_req_disable_advertising(&req);
-
- hci_req_run(&req, NULL);
-
-unlock:
- hci_dev_unlock(hdev);
-}
-
int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
bool use_rpa, struct adv_info *adv_instance,
u8 *own_addr_type, bdaddr_t *rand_addr)
@@ -1168,72 +1129,6 @@ int __hci_req_schedule_adv_instance(struct hci_request *req, u8 instance,
return 0;
}

-/* For a single instance:
- * - force == true: The instance will be removed even when its remaining
- * lifetime is not zero.
- * - force == false: the instance will be deactivated but kept stored unless
- * the remaining lifetime is zero.
- *
- * For instance == 0x00:
- * - force == true: All instances will be removed regardless of their timeout
- * setting.
- * - force == false: Only instances that have a timeout will be removed.
- */
-void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk,
- struct hci_request *req, u8 instance,
- bool force)
-{
- struct adv_info *adv_instance, *n, *next_instance = NULL;
- int err;
- u8 rem_inst;
-
- /* Cancel any timeout concerning the removed instance(s). */
- if (!instance || hdev->cur_adv_instance == instance)
- cancel_adv_timeout(hdev);
-
- /* Get the next instance to advertise BEFORE we remove
- * the current one. This can be the same instance again
- * if there is only one instance.
- */
- if (instance && hdev->cur_adv_instance == instance)
- next_instance = hci_get_next_instance(hdev, instance);
-
- if (instance == 0x00) {
- list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
- list) {
- if (!(force || adv_instance->timeout))
- continue;
-
- rem_inst = adv_instance->instance;
- err = hci_remove_adv_instance(hdev, rem_inst);
- if (!err)
- mgmt_advertising_removed(sk, hdev, rem_inst);
- }
- } else {
- adv_instance = hci_find_adv_instance(hdev, instance);
-
- if (force || (adv_instance && adv_instance->timeout &&
- !adv_instance->remaining_time)) {
- /* Don't advertise a removed instance. */
- if (next_instance &&
- next_instance->instance == instance)
- next_instance = NULL;
-
- err = hci_remove_adv_instance(hdev, instance);
- if (!err)
- mgmt_advertising_removed(sk, hdev, instance);
- }
- }
-
- if (!req || !hdev_is_powered(hdev) ||
- hci_dev_test_flag(hdev, HCI_ADVERTISING))
- return;
-
- if (next_instance && !ext_adv_capable(hdev))
- __hci_req_schedule_adv_instance(req, next_instance->instance,
- false);
-}
-
int hci_update_random_address(struct hci_request *req, bool require_privacy,
bool use_rpa, u8 *own_addr_type)
{
@@ -1505,18 +1400,3 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason)

return 0;
}
-
-void hci_request_setup(struct hci_dev *hdev)
-{
- INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire);
-}
-
-void hci_request_cancel_all(struct hci_dev *hdev)
-{
- __hci_cmd_sync_cancel(hdev, ENODEV);
-
- if (hdev->adv_instance_timeout) {
- cancel_delayed_work_sync(&hdev->adv_instance_expire);
- hdev->adv_instance_timeout = 0;
- }
-}
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 093ad8ec469d..30a28550d90c 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -84,10 +84,6 @@ 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);
-void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk,
- struct hci_request *req, u8 instance,
- bool force);
-
int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance);
int __hci_req_start_ext_adv(struct hci_request *req, u8 instance);
int __hci_req_enable_ext_advertising(struct hci_request *req, u8 instance);
@@ -109,6 +105,3 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
int hci_abort_conn(struct hci_conn *conn, u8 reason);
void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
u8 reason);
-
-void hci_request_setup(struct hci_dev *hdev);
-void hci_request_cancel_all(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index bf4a87c51548..bb664fa9f95e 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -523,6 +523,121 @@ static void interleave_scan(struct work_struct *work)
hci_cmd_sync_queue(hdev, add_le_interleaved_scan_sync, NULL, NULL);
}

+static void cancel_adv_timeout(struct hci_dev *hdev)
+{
+ if (hdev->adv_instance_timeout) {
+ hdev->adv_instance_timeout = 0;
+ cancel_delayed_work(&hdev->adv_instance_expire);
+ }
+}
+
+/* For a single instance:
+ * - force == true: The instance will be removed even when its remaining
+ * lifetime is not zero.
+ * - force == false: the instance will be deactivated but kept stored unless
+ * the remaining lifetime is zero.
+ *
+ * For instance == 0x00:
+ * - force == true: All instances will be removed regardless of their timeout
+ * setting.
+ * - force == false: Only instances that have a timeout will be removed.
+ */
+int hci_clear_adv_instance_sync(struct hci_dev *hdev, struct sock *sk,
+ u8 instance, bool force)
+{
+ struct adv_info *adv_instance, *n, *next_instance = NULL;
+ int err;
+ u8 rem_inst;
+
+ /* Cancel any timeout concerning the removed instance(s). */
+ if (!instance || hdev->cur_adv_instance == instance)
+ cancel_adv_timeout(hdev);
+
+ /* Get the next instance to advertise BEFORE we remove
+ * the current one. This can be the same instance again
+ * if there is only one instance.
+ */
+ if (instance && hdev->cur_adv_instance == instance)
+ next_instance = hci_get_next_instance(hdev, instance);
+
+ if (instance == 0x00) {
+ list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
+ list) {
+ if (!(force || adv_instance->timeout))
+ continue;
+
+ rem_inst = adv_instance->instance;
+ err = hci_remove_adv_instance(hdev, rem_inst);
+ if (!err)
+ mgmt_advertising_removed(sk, hdev, rem_inst);
+ }
+ } else {
+ adv_instance = hci_find_adv_instance(hdev, instance);
+
+ if (force || (adv_instance && adv_instance->timeout &&
+ !adv_instance->remaining_time)) {
+ /* Don't advertise a removed instance. */
+ if (next_instance &&
+ next_instance->instance == instance)
+ next_instance = NULL;
+
+ err = hci_remove_adv_instance(hdev, instance);
+ if (!err)
+ mgmt_advertising_removed(sk, hdev, instance);
+ }
+ }
+
+ if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
+ return 0;
+
+ if (next_instance && !ext_adv_capable(hdev))
+ return hci_schedule_adv_instance_sync(hdev,
+ next_instance->instance,
+ false);
+
+ return 0;
+}
+
+static int adv_timeout_expire_sync(struct hci_dev *hdev, void *data)
+{
+ u8 instance = *(u8 *)data;
+
+ kfree(data);
+
+ hci_clear_adv_instance_sync(hdev, NULL, instance, false);
+
+ if (list_empty(&hdev->adv_instances))
+ return hci_disable_advertising_sync(hdev);
+
+ return 0;
+}
+
+static void adv_timeout_expire(struct work_struct *work)
+{
+ u8 *inst_ptr;
+ struct hci_dev *hdev = container_of(work, struct hci_dev,
+ adv_instance_expire.work);
+
+ bt_dev_dbg(hdev, "");
+
+ hci_dev_lock(hdev);
+
+ hdev->adv_instance_timeout = 0;
+
+ if (hdev->cur_adv_instance == 0x00)
+ goto unlock;
+
+ inst_ptr = kmalloc(1, GFP_KERNEL);
+ if (!inst_ptr)
+ goto unlock;
+
+ *inst_ptr = hdev->cur_adv_instance;
+ hci_cmd_sync_queue(hdev, adv_timeout_expire_sync, inst_ptr, NULL);
+
+unlock:
+ hci_dev_unlock(hdev);
+}
+
void hci_cmd_sync_init(struct hci_dev *hdev)
{
INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work);
@@ -533,6 +648,7 @@ void hci_cmd_sync_init(struct hci_dev *hdev)
INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable);
INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart);
INIT_DELAYED_WORK(&hdev->interleave_scan, interleave_scan);
+ INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire);
}

void hci_cmd_sync_clear(struct hci_dev *hdev)
@@ -1538,14 +1654,6 @@ int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason)
sizeof(cp), &cp, HCI_CMD_TIMEOUT);
}

-static void cancel_adv_timeout(struct hci_dev *hdev)
-{
- if (hdev->adv_instance_timeout) {
- hdev->adv_instance_timeout = 0;
- cancel_delayed_work(&hdev->adv_instance_expire);
- }
-}
-
static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
{
struct {
@@ -4619,7 +4727,12 @@ int hci_dev_close_sync(struct hci_dev *hdev)
cancel_delayed_work(&hdev->le_scan_restart);
cancel_interleave_scan(hdev);

- hci_request_cancel_all(hdev);
+ __hci_cmd_sync_cancel(hdev, ENODEV);
+
+ if (hdev->adv_instance_timeout) {
+ cancel_delayed_work_sync(&hdev->adv_instance_expire);
+ hdev->adv_instance_timeout = 0;
+ }

if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 8cfafd7a0576..a6af51d39caa 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2058,6 +2058,8 @@ static int set_le_sync(struct hci_dev *hdev, void *data)
int err;

if (!val) {
+ hci_clear_adv_instance_sync(hdev, NULL, 0x00, true);
+
if (hci_dev_test_flag(hdev, HCI_LE_ADV))
hci_disable_advertising_sync(hdev);

@@ -2131,9 +2133,6 @@ static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
val = !!cp->val;
enabled = lmp_host_le_capable(hdev);

- if (!val)
- hci_req_clear_adv_instance(hdev, NULL, NULL, 0x00, true);
-
if (!hdev_is_powered(hdev) || val == enabled) {
bool changed = false;

--
2.37.1


2022-08-01 17:22:17

by Brian Gix

[permalink] [raw]
Subject: [PATCH v6 09/10] Bluetooth: convert hci_update_adv_data to hci_sync

hci_update_adv_data() is called from hci_event and hci_core due to
events from the controller. The prior function used the deprecated
hci_request method, and the new one uses hci_sync.c

Signed-off-by: Brian Gix <[email protected]>
---
include/net/bluetooth/hci_sync.h | 1 +
net/bluetooth/hci_core.c | 2 +-
net/bluetooth/hci_event.c | 2 +-
net/bluetooth/hci_request.c | 64 --------------------------------
net/bluetooth/hci_request.h | 3 --
net/bluetooth/hci_sync.c | 20 ++++++++++
6 files changed, 23 insertions(+), 69 deletions(-)

diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h
index b6b975c2ed3e..17f5a4c32f36 100644
--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -61,6 +61,7 @@ int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,

int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance);
int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance);
+int hci_update_adv_data(struct hci_dev *hdev, u8 instance);
int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance,
bool force);

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 3209b39899c1..22e373ff5293 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -714,7 +714,7 @@ static void hci_update_passive_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, hdev->cur_adv_instance);
+ hci_update_adv_data(hdev, hdev->cur_adv_instance);

mgmt_new_settings(hdev);
}
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ea33dd0cd478..9ab359b15f57 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2149,7 +2149,7 @@ static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
adv_instance->tx_power = rp->tx_power;
}
/* Update adv data as tx power is known now */
- hci_req_update_adv_data(hdev, cp->handle);
+ hci_update_adv_data(hdev, cp->handle);

hci_dev_unlock(hdev);

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 31b75253a7eb..c6bfb2e75e52 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -273,70 +273,6 @@ void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
hci_req_add_ev(req, opcode, plen, param, 0);
}

-void __hci_req_update_adv_data(struct hci_request *req, u8 instance)
-{
- struct hci_dev *hdev = req->hdev;
- u8 len;
-
- if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
- return;
-
- if (ext_adv_capable(hdev)) {
- struct {
- struct hci_cp_le_set_ext_adv_data cp;
- u8 data[HCI_MAX_EXT_AD_LENGTH];
- } pdu;
-
- memset(&pdu, 0, sizeof(pdu));
-
- len = eir_create_adv_data(hdev, instance, pdu.data);
-
- /* There's nothing to do if the data hasn't changed */
- if (hdev->adv_data_len == len &&
- memcmp(pdu.data, hdev->adv_data, len) == 0)
- return;
-
- memcpy(hdev->adv_data, pdu.data, len);
- hdev->adv_data_len = len;
-
- pdu.cp.length = len;
- pdu.cp.handle = instance;
- pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
- pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
-
- hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_DATA,
- sizeof(pdu.cp) + len, &pdu.cp);
- } else {
- struct hci_cp_le_set_adv_data cp;
-
- memset(&cp, 0, sizeof(cp));
-
- len = eir_create_adv_data(hdev, instance, cp.data);
-
- /* There's nothing to do if the data hasn't changed */
- if (hdev->adv_data_len == len &&
- memcmp(cp.data, hdev->adv_data, len) == 0)
- return;
-
- memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
- hdev->adv_data_len = len;
-
- cp.length = len;
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
- }
-}
-
-int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance)
-{
- struct hci_request req;
-
- hci_req_init(&req, hdev);
- __hci_req_update_adv_data(&req, instance);
-
- return hci_req_run(&req, NULL);
-}
-
static void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
u8 reason)
{
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 9792c34a681c..e5ecd4e4b686 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -68,7 +68,4 @@ int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req,
struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
const void *param);

-void __hci_req_update_adv_data(struct hci_request *req, u8 instance);
-int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance);
-
int hci_abort_conn(struct hci_conn *conn, u8 reason);
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index f2f3a0e8fbaf..0b0563a245f7 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -6120,3 +6120,23 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,

return 0;
}
+
+static int _update_adv_data_sync(struct hci_dev *hdev, void *data)
+{
+ u8 instance = *(u8 *)data;
+
+ kfree(data);
+
+ return hci_update_adv_data_sync(hdev, instance);
+}
+
+int hci_update_adv_data(struct hci_dev *hdev, u8 instance)
+{
+ u8 *inst_ptr = kmalloc(1, GFP_KERNEL);
+
+ if (!inst_ptr)
+ return -ENOMEM;
+
+ *inst_ptr = instance;
+ return hci_cmd_sync_queue(hdev, _update_adv_data_sync, inst_ptr, NULL);
+}
--
2.37.1