989fa5171f
This make use of disable_work_* on hci_unregister_dev since the hci_dev is
about to be freed new submissions are not disarable.
Fixes: 0d151a1037
("Bluetooth: hci_core: cancel all works upon hci_unregister_dev()")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
4112 lines
94 KiB
C
4112 lines
94 KiB
C
/*
|
|
BlueZ - Bluetooth protocol stack for Linux
|
|
Copyright (C) 2000-2001 Qualcomm Incorporated
|
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Copyright (C) 2011 ProFUSION Embedded Systems
|
|
|
|
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
|
|
|
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License version 2 as
|
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published by the Free Software Foundation;
|
|
|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
|
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
|
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
|
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
|
|
SOFTWARE IS DISCLAIMED.
|
|
*/
|
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|
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/* Bluetooth HCI core. */
|
|
|
|
#include <linux/export.h>
|
|
#include <linux/rfkill.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/crypto.h>
|
|
#include <linux/kcov.h>
|
|
#include <linux/property.h>
|
|
#include <linux/suspend.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/unaligned.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
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#include <net/bluetooth/hci_core.h>
|
|
#include <net/bluetooth/l2cap.h>
|
|
#include <net/bluetooth/mgmt.h>
|
|
|
|
#include "hci_debugfs.h"
|
|
#include "smp.h"
|
|
#include "leds.h"
|
|
#include "msft.h"
|
|
#include "aosp.h"
|
|
#include "hci_codec.h"
|
|
|
|
static void hci_rx_work(struct work_struct *work);
|
|
static void hci_cmd_work(struct work_struct *work);
|
|
static void hci_tx_work(struct work_struct *work);
|
|
|
|
/* HCI device list */
|
|
LIST_HEAD(hci_dev_list);
|
|
DEFINE_RWLOCK(hci_dev_list_lock);
|
|
|
|
/* HCI callback list */
|
|
LIST_HEAD(hci_cb_list);
|
|
DEFINE_MUTEX(hci_cb_list_lock);
|
|
|
|
/* HCI ID Numbering */
|
|
static DEFINE_IDA(hci_index_ida);
|
|
|
|
/* Get HCI device by index.
|
|
* Device is held on return. */
|
|
struct hci_dev *hci_dev_get(int index)
|
|
{
|
|
struct hci_dev *hdev = NULL, *d;
|
|
|
|
BT_DBG("%d", index);
|
|
|
|
if (index < 0)
|
|
return NULL;
|
|
|
|
read_lock(&hci_dev_list_lock);
|
|
list_for_each_entry(d, &hci_dev_list, list) {
|
|
if (d->id == index) {
|
|
hdev = hci_dev_hold(d);
|
|
break;
|
|
}
|
|
}
|
|
read_unlock(&hci_dev_list_lock);
|
|
return hdev;
|
|
}
|
|
|
|
/* ---- Inquiry support ---- */
|
|
|
|
bool hci_discovery_active(struct hci_dev *hdev)
|
|
{
|
|
struct discovery_state *discov = &hdev->discovery;
|
|
|
|
switch (discov->state) {
|
|
case DISCOVERY_FINDING:
|
|
case DISCOVERY_RESOLVING:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void hci_discovery_set_state(struct hci_dev *hdev, int state)
|
|
{
|
|
int old_state = hdev->discovery.state;
|
|
|
|
if (old_state == state)
|
|
return;
|
|
|
|
hdev->discovery.state = state;
|
|
|
|
switch (state) {
|
|
case DISCOVERY_STOPPED:
|
|
hci_update_passive_scan(hdev);
|
|
|
|
if (old_state != DISCOVERY_STARTING)
|
|
mgmt_discovering(hdev, 0);
|
|
break;
|
|
case DISCOVERY_STARTING:
|
|
break;
|
|
case DISCOVERY_FINDING:
|
|
mgmt_discovering(hdev, 1);
|
|
break;
|
|
case DISCOVERY_RESOLVING:
|
|
break;
|
|
case DISCOVERY_STOPPING:
|
|
break;
|
|
}
|
|
|
|
bt_dev_dbg(hdev, "state %u -> %u", old_state, state);
|
|
}
|
|
|
|
void hci_inquiry_cache_flush(struct hci_dev *hdev)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_entry *p, *n;
|
|
|
|
list_for_each_entry_safe(p, n, &cache->all, all) {
|
|
list_del(&p->all);
|
|
kfree(p);
|
|
}
|
|
|
|
INIT_LIST_HEAD(&cache->unknown);
|
|
INIT_LIST_HEAD(&cache->resolve);
|
|
}
|
|
|
|
struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
|
|
bdaddr_t *bdaddr)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_entry *e;
|
|
|
|
BT_DBG("cache %p, %pMR", cache, bdaddr);
|
|
|
|
list_for_each_entry(e, &cache->all, all) {
|
|
if (!bacmp(&e->data.bdaddr, bdaddr))
|
|
return e;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
|
|
bdaddr_t *bdaddr)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_entry *e;
|
|
|
|
BT_DBG("cache %p, %pMR", cache, bdaddr);
|
|
|
|
list_for_each_entry(e, &cache->unknown, list) {
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|
if (!bacmp(&e->data.bdaddr, bdaddr))
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|
return e;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
|
|
bdaddr_t *bdaddr,
|
|
int state)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_entry *e;
|
|
|
|
BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state);
|
|
|
|
list_for_each_entry(e, &cache->resolve, list) {
|
|
if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state)
|
|
return e;
|
|
if (!bacmp(&e->data.bdaddr, bdaddr))
|
|
return e;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
|
|
struct inquiry_entry *ie)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct list_head *pos = &cache->resolve;
|
|
struct inquiry_entry *p;
|
|
|
|
list_del(&ie->list);
|
|
|
|
list_for_each_entry(p, &cache->resolve, list) {
|
|
if (p->name_state != NAME_PENDING &&
|
|
abs(p->data.rssi) >= abs(ie->data.rssi))
|
|
break;
|
|
pos = &p->list;
|
|
}
|
|
|
|
list_add(&ie->list, pos);
|
|
}
|
|
|
|
u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
|
|
bool name_known)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_entry *ie;
|
|
u32 flags = 0;
|
|
|
|
BT_DBG("cache %p, %pMR", cache, &data->bdaddr);
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|
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|
hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR);
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|
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|
if (!data->ssp_mode)
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|
flags |= MGMT_DEV_FOUND_LEGACY_PAIRING;
|
|
|
|
ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr);
|
|
if (ie) {
|
|
if (!ie->data.ssp_mode)
|
|
flags |= MGMT_DEV_FOUND_LEGACY_PAIRING;
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|
|
|
if (ie->name_state == NAME_NEEDED &&
|
|
data->rssi != ie->data.rssi) {
|
|
ie->data.rssi = data->rssi;
|
|
hci_inquiry_cache_update_resolve(hdev, ie);
|
|
}
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|
goto update;
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|
}
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|
|
|
/* Entry not in the cache. Add new one. */
|
|
ie = kzalloc(sizeof(*ie), GFP_KERNEL);
|
|
if (!ie) {
|
|
flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
|
|
goto done;
|
|
}
|
|
|
|
list_add(&ie->all, &cache->all);
|
|
|
|
if (name_known) {
|
|
ie->name_state = NAME_KNOWN;
|
|
} else {
|
|
ie->name_state = NAME_NOT_KNOWN;
|
|
list_add(&ie->list, &cache->unknown);
|
|
}
|
|
|
|
update:
|
|
if (name_known && ie->name_state != NAME_KNOWN &&
|
|
ie->name_state != NAME_PENDING) {
|
|
ie->name_state = NAME_KNOWN;
|
|
list_del(&ie->list);
|
|
}
|
|
|
|
memcpy(&ie->data, data, sizeof(*data));
|
|
ie->timestamp = jiffies;
|
|
cache->timestamp = jiffies;
|
|
|
|
if (ie->name_state == NAME_NOT_KNOWN)
|
|
flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
|
|
|
|
done:
|
|
return flags;
|
|
}
|
|
|
|
static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf)
|
|
{
|
|
struct discovery_state *cache = &hdev->discovery;
|
|
struct inquiry_info *info = (struct inquiry_info *) buf;
|
|
struct inquiry_entry *e;
|
|
int copied = 0;
|
|
|
|
list_for_each_entry(e, &cache->all, all) {
|
|
struct inquiry_data *data = &e->data;
|
|
|
|
if (copied >= num)
|
|
break;
|
|
|
|
bacpy(&info->bdaddr, &data->bdaddr);
|
|
info->pscan_rep_mode = data->pscan_rep_mode;
|
|
info->pscan_period_mode = data->pscan_period_mode;
|
|
info->pscan_mode = data->pscan_mode;
|
|
memcpy(info->dev_class, data->dev_class, 3);
|
|
info->clock_offset = data->clock_offset;
|
|
|
|
info++;
|
|
copied++;
|
|
}
|
|
|
|
BT_DBG("cache %p, copied %d", cache, copied);
|
|
return copied;
|
|
}
|
|
|
|
int hci_inquiry(void __user *arg)
|
|
{
|
|
__u8 __user *ptr = arg;
|
|
struct hci_inquiry_req ir;
|
|
struct hci_dev *hdev;
|
|
int err = 0, do_inquiry = 0, max_rsp;
|
|
__u8 *buf;
|
|
|
|
if (copy_from_user(&ir, ptr, sizeof(ir)))
|
|
return -EFAULT;
|
|
|
|
hdev = hci_dev_get(ir.dev_id);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
err = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
/* Restrict maximum inquiry length to 60 seconds */
|
|
if (ir.length > 60) {
|
|
err = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
hci_dev_lock(hdev);
|
|
if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
|
|
inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) {
|
|
hci_inquiry_cache_flush(hdev);
|
|
do_inquiry = 1;
|
|
}
|
|
hci_dev_unlock(hdev);
|
|
|
|
if (do_inquiry) {
|
|
hci_req_sync_lock(hdev);
|
|
err = hci_inquiry_sync(hdev, ir.length, ir.num_rsp);
|
|
hci_req_sync_unlock(hdev);
|
|
|
|
if (err < 0)
|
|
goto done;
|
|
|
|
/* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is
|
|
* cleared). If it is interrupted by a signal, return -EINTR.
|
|
*/
|
|
if (wait_on_bit(&hdev->flags, HCI_INQUIRY,
|
|
TASK_INTERRUPTIBLE)) {
|
|
err = -EINTR;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* for unlimited number of responses we will use buffer with
|
|
* 255 entries
|
|
*/
|
|
max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp;
|
|
|
|
/* cache_dump can't sleep. Therefore we allocate temp buffer and then
|
|
* copy it to the user space.
|
|
*/
|
|
buf = kmalloc_array(max_rsp, sizeof(struct inquiry_info), GFP_KERNEL);
|
|
if (!buf) {
|
|
err = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
hci_dev_lock(hdev);
|
|
ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf);
|
|
hci_dev_unlock(hdev);
|
|
|
|
BT_DBG("num_rsp %d", ir.num_rsp);
|
|
|
|
if (!copy_to_user(ptr, &ir, sizeof(ir))) {
|
|
ptr += sizeof(ir);
|
|
if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) *
|
|
ir.num_rsp))
|
|
err = -EFAULT;
|
|
} else
|
|
err = -EFAULT;
|
|
|
|
kfree(buf);
|
|
|
|
done:
|
|
hci_dev_put(hdev);
|
|
return err;
|
|
}
|
|
|
|
static int hci_dev_do_open(struct hci_dev *hdev)
|
|
{
|
|
int ret = 0;
|
|
|
|
BT_DBG("%s %p", hdev->name, hdev);
|
|
|
|
hci_req_sync_lock(hdev);
|
|
|
|
ret = hci_dev_open_sync(hdev);
|
|
|
|
hci_req_sync_unlock(hdev);
|
|
return ret;
|
|
}
|
|
|
|
/* ---- HCI ioctl helpers ---- */
|
|
|
|
int hci_dev_open(__u16 dev)
|
|
{
|
|
struct hci_dev *hdev;
|
|
int err;
|
|
|
|
hdev = hci_dev_get(dev);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
/* Devices that are marked as unconfigured can only be powered
|
|
* up as user channel. Trying to bring them up as normal devices
|
|
* will result into a failure. Only user channel operation is
|
|
* possible.
|
|
*
|
|
* When this function is called for a user channel, the flag
|
|
* HCI_USER_CHANNEL will be set first before attempting to
|
|
* open the device.
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
|
|
!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
/* We need to ensure that no other power on/off work is pending
|
|
* before proceeding to call hci_dev_do_open. This is
|
|
* particularly important if the setup procedure has not yet
|
|
* completed.
|
|
*/
|
|
if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF))
|
|
cancel_delayed_work(&hdev->power_off);
|
|
|
|
/* After this call it is guaranteed that the setup procedure
|
|
* has finished. This means that error conditions like RFKILL
|
|
* or no valid public or static random address apply.
|
|
*/
|
|
flush_workqueue(hdev->req_workqueue);
|
|
|
|
/* For controllers not using the management interface and that
|
|
* are brought up using legacy ioctl, set the HCI_BONDABLE bit
|
|
* so that pairing works for them. Once the management interface
|
|
* is in use this bit will be cleared again and userspace has
|
|
* to explicitly enable it.
|
|
*/
|
|
if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
|
|
!hci_dev_test_flag(hdev, HCI_MGMT))
|
|
hci_dev_set_flag(hdev, HCI_BONDABLE);
|
|
|
|
err = hci_dev_do_open(hdev);
|
|
|
|
done:
|
|
hci_dev_put(hdev);
|
|
return err;
|
|
}
|
|
|
|
int hci_dev_do_close(struct hci_dev *hdev)
|
|
{
|
|
int err;
|
|
|
|
BT_DBG("%s %p", hdev->name, hdev);
|
|
|
|
hci_req_sync_lock(hdev);
|
|
|
|
err = hci_dev_close_sync(hdev);
|
|
|
|
hci_req_sync_unlock(hdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
int hci_dev_close(__u16 dev)
|
|
{
|
|
struct hci_dev *hdev;
|
|
int err;
|
|
|
|
hdev = hci_dev_get(dev);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
err = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
cancel_work_sync(&hdev->power_on);
|
|
if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF))
|
|
cancel_delayed_work(&hdev->power_off);
|
|
|
|
err = hci_dev_do_close(hdev);
|
|
|
|
done:
|
|
hci_dev_put(hdev);
|
|
return err;
|
|
}
|
|
|
|
static int hci_dev_do_reset(struct hci_dev *hdev)
|
|
{
|
|
int ret;
|
|
|
|
BT_DBG("%s %p", hdev->name, hdev);
|
|
|
|
hci_req_sync_lock(hdev);
|
|
|
|
/* Drop queues */
|
|
skb_queue_purge(&hdev->rx_q);
|
|
skb_queue_purge(&hdev->cmd_q);
|
|
|
|
/* Cancel these to avoid queueing non-chained pending work */
|
|
hci_dev_set_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE);
|
|
/* Wait for
|
|
*
|
|
* if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
|
|
* queue_delayed_work(&hdev->{cmd,ncmd}_timer)
|
|
*
|
|
* inside RCU section to see the flag or complete scheduling.
|
|
*/
|
|
synchronize_rcu();
|
|
/* Explicitly cancel works in case scheduled after setting the flag. */
|
|
cancel_delayed_work(&hdev->cmd_timer);
|
|
cancel_delayed_work(&hdev->ncmd_timer);
|
|
|
|
/* Avoid potential lockdep warnings from the *_flush() calls by
|
|
* ensuring the workqueue is empty up front.
|
|
*/
|
|
drain_workqueue(hdev->workqueue);
|
|
|
|
hci_dev_lock(hdev);
|
|
hci_inquiry_cache_flush(hdev);
|
|
hci_conn_hash_flush(hdev);
|
|
hci_dev_unlock(hdev);
|
|
|
|
if (hdev->flush)
|
|
hdev->flush(hdev);
|
|
|
|
hci_dev_clear_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE);
|
|
|
|
atomic_set(&hdev->cmd_cnt, 1);
|
|
hdev->acl_cnt = 0;
|
|
hdev->sco_cnt = 0;
|
|
hdev->le_cnt = 0;
|
|
hdev->iso_cnt = 0;
|
|
|
|
ret = hci_reset_sync(hdev);
|
|
|
|
hci_req_sync_unlock(hdev);
|
|
return ret;
|
|
}
|
|
|
|
int hci_dev_reset(__u16 dev)
|
|
{
|
|
struct hci_dev *hdev;
|
|
int err;
|
|
|
|
hdev = hci_dev_get(dev);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
if (!test_bit(HCI_UP, &hdev->flags)) {
|
|
err = -ENETDOWN;
|
|
goto done;
|
|
}
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
err = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
err = hci_dev_do_reset(hdev);
|
|
|
|
done:
|
|
hci_dev_put(hdev);
|
|
return err;
|
|
}
|
|
|
|
int hci_dev_reset_stat(__u16 dev)
|
|
{
|
|
struct hci_dev *hdev;
|
|
int ret = 0;
|
|
|
|
hdev = hci_dev_get(dev);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
ret = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
|
|
ret = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
|
|
|
|
done:
|
|
hci_dev_put(hdev);
|
|
return ret;
|
|
}
|
|
|
|
static void hci_update_passive_scan_state(struct hci_dev *hdev, u8 scan)
|
|
{
|
|
bool conn_changed, discov_changed;
|
|
|
|
BT_DBG("%s scan 0x%02x", hdev->name, scan);
|
|
|
|
if ((scan & SCAN_PAGE))
|
|
conn_changed = !hci_dev_test_and_set_flag(hdev,
|
|
HCI_CONNECTABLE);
|
|
else
|
|
conn_changed = hci_dev_test_and_clear_flag(hdev,
|
|
HCI_CONNECTABLE);
|
|
|
|
if ((scan & SCAN_INQUIRY)) {
|
|
discov_changed = !hci_dev_test_and_set_flag(hdev,
|
|
HCI_DISCOVERABLE);
|
|
} else {
|
|
hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
|
|
discov_changed = hci_dev_test_and_clear_flag(hdev,
|
|
HCI_DISCOVERABLE);
|
|
}
|
|
|
|
if (!hci_dev_test_flag(hdev, HCI_MGMT))
|
|
return;
|
|
|
|
if (conn_changed || discov_changed) {
|
|
/* In case this was disabled through mgmt */
|
|
hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
|
|
hci_update_adv_data(hdev, hdev->cur_adv_instance);
|
|
|
|
mgmt_new_settings(hdev);
|
|
}
|
|
}
|
|
|
|
int hci_dev_cmd(unsigned int cmd, void __user *arg)
|
|
{
|
|
struct hci_dev *hdev;
|
|
struct hci_dev_req dr;
|
|
__le16 policy;
|
|
int err = 0;
|
|
|
|
if (copy_from_user(&dr, arg, sizeof(dr)))
|
|
return -EFAULT;
|
|
|
|
hdev = hci_dev_get(dr.dev_id);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
err = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case HCISETAUTH:
|
|
err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
|
|
1, &dr.dev_opt, HCI_CMD_TIMEOUT);
|
|
break;
|
|
|
|
case HCISETENCRYPT:
|
|
if (!lmp_encrypt_capable(hdev)) {
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
if (!test_bit(HCI_AUTH, &hdev->flags)) {
|
|
/* Auth must be enabled first */
|
|
err = hci_cmd_sync_status(hdev,
|
|
HCI_OP_WRITE_AUTH_ENABLE,
|
|
1, &dr.dev_opt,
|
|
HCI_CMD_TIMEOUT);
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_ENCRYPT_MODE,
|
|
1, &dr.dev_opt, HCI_CMD_TIMEOUT);
|
|
break;
|
|
|
|
case HCISETSCAN:
|
|
err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
|
|
1, &dr.dev_opt, HCI_CMD_TIMEOUT);
|
|
|
|
/* Ensure that the connectable and discoverable states
|
|
* get correctly modified as this was a non-mgmt change.
|
|
*/
|
|
if (!err)
|
|
hci_update_passive_scan_state(hdev, dr.dev_opt);
|
|
break;
|
|
|
|
case HCISETLINKPOL:
|
|
policy = cpu_to_le16(dr.dev_opt);
|
|
|
|
err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
|
|
2, &policy, HCI_CMD_TIMEOUT);
|
|
break;
|
|
|
|
case HCISETLINKMODE:
|
|
hdev->link_mode = ((__u16) dr.dev_opt) &
|
|
(HCI_LM_MASTER | HCI_LM_ACCEPT);
|
|
break;
|
|
|
|
case HCISETPTYPE:
|
|
if (hdev->pkt_type == (__u16) dr.dev_opt)
|
|
break;
|
|
|
|
hdev->pkt_type = (__u16) dr.dev_opt;
|
|
mgmt_phy_configuration_changed(hdev, NULL);
|
|
break;
|
|
|
|
case HCISETACLMTU:
|
|
hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1);
|
|
hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0);
|
|
break;
|
|
|
|
case HCISETSCOMTU:
|
|
hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1);
|
|
hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0);
|
|
break;
|
|
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
done:
|
|
hci_dev_put(hdev);
|
|
return err;
|
|
}
|
|
|
|
int hci_get_dev_list(void __user *arg)
|
|
{
|
|
struct hci_dev *hdev;
|
|
struct hci_dev_list_req *dl;
|
|
struct hci_dev_req *dr;
|
|
int n = 0, err;
|
|
__u16 dev_num;
|
|
|
|
if (get_user(dev_num, (__u16 __user *) arg))
|
|
return -EFAULT;
|
|
|
|
if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr))
|
|
return -EINVAL;
|
|
|
|
dl = kzalloc(struct_size(dl, dev_req, dev_num), GFP_KERNEL);
|
|
if (!dl)
|
|
return -ENOMEM;
|
|
|
|
dl->dev_num = dev_num;
|
|
dr = dl->dev_req;
|
|
|
|
read_lock(&hci_dev_list_lock);
|
|
list_for_each_entry(hdev, &hci_dev_list, list) {
|
|
unsigned long flags = hdev->flags;
|
|
|
|
/* When the auto-off is configured it means the transport
|
|
* is running, but in that case still indicate that the
|
|
* device is actually down.
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_AUTO_OFF))
|
|
flags &= ~BIT(HCI_UP);
|
|
|
|
dr[n].dev_id = hdev->id;
|
|
dr[n].dev_opt = flags;
|
|
|
|
if (++n >= dev_num)
|
|
break;
|
|
}
|
|
read_unlock(&hci_dev_list_lock);
|
|
|
|
dl->dev_num = n;
|
|
err = copy_to_user(arg, dl, struct_size(dl, dev_req, n));
|
|
kfree(dl);
|
|
|
|
return err ? -EFAULT : 0;
|
|
}
|
|
|
|
int hci_get_dev_info(void __user *arg)
|
|
{
|
|
struct hci_dev *hdev;
|
|
struct hci_dev_info di;
|
|
unsigned long flags;
|
|
int err = 0;
|
|
|
|
if (copy_from_user(&di, arg, sizeof(di)))
|
|
return -EFAULT;
|
|
|
|
hdev = hci_dev_get(di.dev_id);
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
/* When the auto-off is configured it means the transport
|
|
* is running, but in that case still indicate that the
|
|
* device is actually down.
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_AUTO_OFF))
|
|
flags = hdev->flags & ~BIT(HCI_UP);
|
|
else
|
|
flags = hdev->flags;
|
|
|
|
strscpy(di.name, hdev->name, sizeof(di.name));
|
|
di.bdaddr = hdev->bdaddr;
|
|
di.type = (hdev->bus & 0x0f);
|
|
di.flags = flags;
|
|
di.pkt_type = hdev->pkt_type;
|
|
if (lmp_bredr_capable(hdev)) {
|
|
di.acl_mtu = hdev->acl_mtu;
|
|
di.acl_pkts = hdev->acl_pkts;
|
|
di.sco_mtu = hdev->sco_mtu;
|
|
di.sco_pkts = hdev->sco_pkts;
|
|
} else {
|
|
di.acl_mtu = hdev->le_mtu;
|
|
di.acl_pkts = hdev->le_pkts;
|
|
di.sco_mtu = 0;
|
|
di.sco_pkts = 0;
|
|
}
|
|
di.link_policy = hdev->link_policy;
|
|
di.link_mode = hdev->link_mode;
|
|
|
|
memcpy(&di.stat, &hdev->stat, sizeof(di.stat));
|
|
memcpy(&di.features, &hdev->features, sizeof(di.features));
|
|
|
|
if (copy_to_user(arg, &di, sizeof(di)))
|
|
err = -EFAULT;
|
|
|
|
hci_dev_put(hdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* ---- Interface to HCI drivers ---- */
|
|
|
|
static int hci_dev_do_poweroff(struct hci_dev *hdev)
|
|
{
|
|
int err;
|
|
|
|
BT_DBG("%s %p", hdev->name, hdev);
|
|
|
|
hci_req_sync_lock(hdev);
|
|
|
|
err = hci_set_powered_sync(hdev, false);
|
|
|
|
hci_req_sync_unlock(hdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int hci_rfkill_set_block(void *data, bool blocked)
|
|
{
|
|
struct hci_dev *hdev = data;
|
|
int err;
|
|
|
|
BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked);
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
|
|
return -EBUSY;
|
|
|
|
if (blocked == hci_dev_test_flag(hdev, HCI_RFKILLED))
|
|
return 0;
|
|
|
|
if (blocked) {
|
|
hci_dev_set_flag(hdev, HCI_RFKILLED);
|
|
|
|
if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
|
|
!hci_dev_test_flag(hdev, HCI_CONFIG)) {
|
|
err = hci_dev_do_poweroff(hdev);
|
|
if (err) {
|
|
bt_dev_err(hdev, "Error when powering off device on rfkill (%d)",
|
|
err);
|
|
|
|
/* Make sure the device is still closed even if
|
|
* anything during power off sequence (eg.
|
|
* disconnecting devices) failed.
|
|
*/
|
|
hci_dev_do_close(hdev);
|
|
}
|
|
}
|
|
} else {
|
|
hci_dev_clear_flag(hdev, HCI_RFKILLED);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct rfkill_ops hci_rfkill_ops = {
|
|
.set_block = hci_rfkill_set_block,
|
|
};
|
|
|
|
static void hci_power_on(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev, power_on);
|
|
int err;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (test_bit(HCI_UP, &hdev->flags) &&
|
|
hci_dev_test_flag(hdev, HCI_MGMT) &&
|
|
hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
|
|
cancel_delayed_work(&hdev->power_off);
|
|
err = hci_powered_update_sync(hdev);
|
|
mgmt_power_on(hdev, err);
|
|
return;
|
|
}
|
|
|
|
err = hci_dev_do_open(hdev);
|
|
if (err < 0) {
|
|
hci_dev_lock(hdev);
|
|
mgmt_set_powered_failed(hdev, err);
|
|
hci_dev_unlock(hdev);
|
|
return;
|
|
}
|
|
|
|
/* During the HCI setup phase, a few error conditions are
|
|
* ignored and they need to be checked now. If they are still
|
|
* valid, it is important to turn the device back off.
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_RFKILLED) ||
|
|
hci_dev_test_flag(hdev, HCI_UNCONFIGURED) ||
|
|
(!bacmp(&hdev->bdaddr, BDADDR_ANY) &&
|
|
!bacmp(&hdev->static_addr, BDADDR_ANY))) {
|
|
hci_dev_clear_flag(hdev, HCI_AUTO_OFF);
|
|
hci_dev_do_close(hdev);
|
|
} else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) {
|
|
queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
|
|
HCI_AUTO_OFF_TIMEOUT);
|
|
}
|
|
|
|
if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) {
|
|
/* For unconfigured devices, set the HCI_RAW flag
|
|
* so that userspace can easily identify them.
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
|
|
set_bit(HCI_RAW, &hdev->flags);
|
|
|
|
/* For fully configured devices, this will send
|
|
* the Index Added event. For unconfigured devices,
|
|
* it will send Unconfigued Index Added event.
|
|
*
|
|
* Devices with HCI_QUIRK_RAW_DEVICE are ignored
|
|
* and no event will be send.
|
|
*/
|
|
mgmt_index_added(hdev);
|
|
} else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) {
|
|
/* When the controller is now configured, then it
|
|
* is important to clear the HCI_RAW flag.
|
|
*/
|
|
if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
|
|
clear_bit(HCI_RAW, &hdev->flags);
|
|
|
|
/* Powering on the controller with HCI_CONFIG set only
|
|
* happens with the transition from unconfigured to
|
|
* configured. This will send the Index Added event.
|
|
*/
|
|
mgmt_index_added(hdev);
|
|
}
|
|
}
|
|
|
|
static void hci_power_off(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev,
|
|
power_off.work);
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
hci_dev_do_close(hdev);
|
|
}
|
|
|
|
static void hci_error_reset(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset);
|
|
|
|
hci_dev_hold(hdev);
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (hdev->hw_error)
|
|
hdev->hw_error(hdev, hdev->hw_error_code);
|
|
else
|
|
bt_dev_err(hdev, "hardware error 0x%2.2x", hdev->hw_error_code);
|
|
|
|
if (!hci_dev_do_close(hdev))
|
|
hci_dev_do_open(hdev);
|
|
|
|
hci_dev_put(hdev);
|
|
}
|
|
|
|
void hci_uuids_clear(struct hci_dev *hdev)
|
|
{
|
|
struct bt_uuid *uuid, *tmp;
|
|
|
|
list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) {
|
|
list_del(&uuid->list);
|
|
kfree(uuid);
|
|
}
|
|
}
|
|
|
|
void hci_link_keys_clear(struct hci_dev *hdev)
|
|
{
|
|
struct link_key *key, *tmp;
|
|
|
|
list_for_each_entry_safe(key, tmp, &hdev->link_keys, list) {
|
|
list_del_rcu(&key->list);
|
|
kfree_rcu(key, rcu);
|
|
}
|
|
}
|
|
|
|
void hci_smp_ltks_clear(struct hci_dev *hdev)
|
|
{
|
|
struct smp_ltk *k, *tmp;
|
|
|
|
list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) {
|
|
list_del_rcu(&k->list);
|
|
kfree_rcu(k, rcu);
|
|
}
|
|
}
|
|
|
|
void hci_smp_irks_clear(struct hci_dev *hdev)
|
|
{
|
|
struct smp_irk *k, *tmp;
|
|
|
|
list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) {
|
|
list_del_rcu(&k->list);
|
|
kfree_rcu(k, rcu);
|
|
}
|
|
}
|
|
|
|
void hci_blocked_keys_clear(struct hci_dev *hdev)
|
|
{
|
|
struct blocked_key *b, *tmp;
|
|
|
|
list_for_each_entry_safe(b, tmp, &hdev->blocked_keys, list) {
|
|
list_del_rcu(&b->list);
|
|
kfree_rcu(b, rcu);
|
|
}
|
|
}
|
|
|
|
bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16])
|
|
{
|
|
bool blocked = false;
|
|
struct blocked_key *b;
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(b, &hdev->blocked_keys, list) {
|
|
if (b->type == type && !memcmp(b->val, val, sizeof(b->val))) {
|
|
blocked = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
return blocked;
|
|
}
|
|
|
|
struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
|
|
{
|
|
struct link_key *k;
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(k, &hdev->link_keys, list) {
|
|
if (bacmp(bdaddr, &k->bdaddr) == 0) {
|
|
rcu_read_unlock();
|
|
|
|
if (hci_is_blocked_key(hdev,
|
|
HCI_BLOCKED_KEY_TYPE_LINKKEY,
|
|
k->val)) {
|
|
bt_dev_warn_ratelimited(hdev,
|
|
"Link key blocked for %pMR",
|
|
&k->bdaddr);
|
|
return NULL;
|
|
}
|
|
|
|
return k;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
|
|
u8 key_type, u8 old_key_type)
|
|
{
|
|
/* Legacy key */
|
|
if (key_type < 0x03)
|
|
return true;
|
|
|
|
/* Debug keys are insecure so don't store them persistently */
|
|
if (key_type == HCI_LK_DEBUG_COMBINATION)
|
|
return false;
|
|
|
|
/* Changed combination key and there's no previous one */
|
|
if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff)
|
|
return false;
|
|
|
|
/* Security mode 3 case */
|
|
if (!conn)
|
|
return true;
|
|
|
|
/* BR/EDR key derived using SC from an LE link */
|
|
if (conn->type == LE_LINK)
|
|
return true;
|
|
|
|
/* Neither local nor remote side had no-bonding as requirement */
|
|
if (conn->auth_type > 0x01 && conn->remote_auth > 0x01)
|
|
return true;
|
|
|
|
/* Local side had dedicated bonding as requirement */
|
|
if (conn->auth_type == 0x02 || conn->auth_type == 0x03)
|
|
return true;
|
|
|
|
/* Remote side had dedicated bonding as requirement */
|
|
if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03)
|
|
return true;
|
|
|
|
/* If none of the above criteria match, then don't store the key
|
|
* persistently */
|
|
return false;
|
|
}
|
|
|
|
static u8 ltk_role(u8 type)
|
|
{
|
|
if (type == SMP_LTK)
|
|
return HCI_ROLE_MASTER;
|
|
|
|
return HCI_ROLE_SLAVE;
|
|
}
|
|
|
|
struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 addr_type, u8 role)
|
|
{
|
|
struct smp_ltk *k;
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(k, &hdev->long_term_keys, list) {
|
|
if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr))
|
|
continue;
|
|
|
|
if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) {
|
|
rcu_read_unlock();
|
|
|
|
if (hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_LTK,
|
|
k->val)) {
|
|
bt_dev_warn_ratelimited(hdev,
|
|
"LTK blocked for %pMR",
|
|
&k->bdaddr);
|
|
return NULL;
|
|
}
|
|
|
|
return k;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa)
|
|
{
|
|
struct smp_irk *irk_to_return = NULL;
|
|
struct smp_irk *irk;
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
|
|
if (!bacmp(&irk->rpa, rpa)) {
|
|
irk_to_return = irk;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
|
|
if (smp_irk_matches(hdev, irk->val, rpa)) {
|
|
bacpy(&irk->rpa, rpa);
|
|
irk_to_return = irk;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
done:
|
|
if (irk_to_return && hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_IRK,
|
|
irk_to_return->val)) {
|
|
bt_dev_warn_ratelimited(hdev, "Identity key blocked for %pMR",
|
|
&irk_to_return->bdaddr);
|
|
irk_to_return = NULL;
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
return irk_to_return;
|
|
}
|
|
|
|
struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 addr_type)
|
|
{
|
|
struct smp_irk *irk_to_return = NULL;
|
|
struct smp_irk *irk;
|
|
|
|
/* Identity Address must be public or static random */
|
|
if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0)
|
|
return NULL;
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
|
|
if (addr_type == irk->addr_type &&
|
|
bacmp(bdaddr, &irk->bdaddr) == 0) {
|
|
irk_to_return = irk;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
done:
|
|
|
|
if (irk_to_return && hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_IRK,
|
|
irk_to_return->val)) {
|
|
bt_dev_warn_ratelimited(hdev, "Identity key blocked for %pMR",
|
|
&irk_to_return->bdaddr);
|
|
irk_to_return = NULL;
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
return irk_to_return;
|
|
}
|
|
|
|
struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
|
|
bdaddr_t *bdaddr, u8 *val, u8 type,
|
|
u8 pin_len, bool *persistent)
|
|
{
|
|
struct link_key *key, *old_key;
|
|
u8 old_key_type;
|
|
|
|
old_key = hci_find_link_key(hdev, bdaddr);
|
|
if (old_key) {
|
|
old_key_type = old_key->type;
|
|
key = old_key;
|
|
} else {
|
|
old_key_type = conn ? conn->key_type : 0xff;
|
|
key = kzalloc(sizeof(*key), GFP_KERNEL);
|
|
if (!key)
|
|
return NULL;
|
|
list_add_rcu(&key->list, &hdev->link_keys);
|
|
}
|
|
|
|
BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type);
|
|
|
|
/* Some buggy controller combinations generate a changed
|
|
* combination key for legacy pairing even when there's no
|
|
* previous key */
|
|
if (type == HCI_LK_CHANGED_COMBINATION &&
|
|
(!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) {
|
|
type = HCI_LK_COMBINATION;
|
|
if (conn)
|
|
conn->key_type = type;
|
|
}
|
|
|
|
bacpy(&key->bdaddr, bdaddr);
|
|
memcpy(key->val, val, HCI_LINK_KEY_SIZE);
|
|
key->pin_len = pin_len;
|
|
|
|
if (type == HCI_LK_CHANGED_COMBINATION)
|
|
key->type = old_key_type;
|
|
else
|
|
key->type = type;
|
|
|
|
if (persistent)
|
|
*persistent = hci_persistent_key(hdev, conn, type,
|
|
old_key_type);
|
|
|
|
return key;
|
|
}
|
|
|
|
struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 addr_type, u8 type, u8 authenticated,
|
|
u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand)
|
|
{
|
|
struct smp_ltk *key, *old_key;
|
|
u8 role = ltk_role(type);
|
|
|
|
old_key = hci_find_ltk(hdev, bdaddr, addr_type, role);
|
|
if (old_key)
|
|
key = old_key;
|
|
else {
|
|
key = kzalloc(sizeof(*key), GFP_KERNEL);
|
|
if (!key)
|
|
return NULL;
|
|
list_add_rcu(&key->list, &hdev->long_term_keys);
|
|
}
|
|
|
|
bacpy(&key->bdaddr, bdaddr);
|
|
key->bdaddr_type = addr_type;
|
|
memcpy(key->val, tk, sizeof(key->val));
|
|
key->authenticated = authenticated;
|
|
key->ediv = ediv;
|
|
key->rand = rand;
|
|
key->enc_size = enc_size;
|
|
key->type = type;
|
|
|
|
return key;
|
|
}
|
|
|
|
struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 addr_type, u8 val[16], bdaddr_t *rpa)
|
|
{
|
|
struct smp_irk *irk;
|
|
|
|
irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type);
|
|
if (!irk) {
|
|
irk = kzalloc(sizeof(*irk), GFP_KERNEL);
|
|
if (!irk)
|
|
return NULL;
|
|
|
|
bacpy(&irk->bdaddr, bdaddr);
|
|
irk->addr_type = addr_type;
|
|
|
|
list_add_rcu(&irk->list, &hdev->identity_resolving_keys);
|
|
}
|
|
|
|
memcpy(irk->val, val, 16);
|
|
bacpy(&irk->rpa, rpa);
|
|
|
|
return irk;
|
|
}
|
|
|
|
int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
|
|
{
|
|
struct link_key *key;
|
|
|
|
key = hci_find_link_key(hdev, bdaddr);
|
|
if (!key)
|
|
return -ENOENT;
|
|
|
|
BT_DBG("%s removing %pMR", hdev->name, bdaddr);
|
|
|
|
list_del_rcu(&key->list);
|
|
kfree_rcu(key, rcu);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type)
|
|
{
|
|
struct smp_ltk *k, *tmp;
|
|
int removed = 0;
|
|
|
|
list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) {
|
|
if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type)
|
|
continue;
|
|
|
|
BT_DBG("%s removing %pMR", hdev->name, bdaddr);
|
|
|
|
list_del_rcu(&k->list);
|
|
kfree_rcu(k, rcu);
|
|
removed++;
|
|
}
|
|
|
|
return removed ? 0 : -ENOENT;
|
|
}
|
|
|
|
void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type)
|
|
{
|
|
struct smp_irk *k, *tmp;
|
|
|
|
list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) {
|
|
if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type)
|
|
continue;
|
|
|
|
BT_DBG("%s removing %pMR", hdev->name, bdaddr);
|
|
|
|
list_del_rcu(&k->list);
|
|
kfree_rcu(k, rcu);
|
|
}
|
|
}
|
|
|
|
bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
|
|
{
|
|
struct smp_ltk *k;
|
|
struct smp_irk *irk;
|
|
u8 addr_type;
|
|
|
|
if (type == BDADDR_BREDR) {
|
|
if (hci_find_link_key(hdev, bdaddr))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/* Convert to HCI addr type which struct smp_ltk uses */
|
|
if (type == BDADDR_LE_PUBLIC)
|
|
addr_type = ADDR_LE_DEV_PUBLIC;
|
|
else
|
|
addr_type = ADDR_LE_DEV_RANDOM;
|
|
|
|
irk = hci_get_irk(hdev, bdaddr, addr_type);
|
|
if (irk) {
|
|
bdaddr = &irk->bdaddr;
|
|
addr_type = irk->addr_type;
|
|
}
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(k, &hdev->long_term_keys, list) {
|
|
if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) {
|
|
rcu_read_unlock();
|
|
return true;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return false;
|
|
}
|
|
|
|
/* HCI command timer function */
|
|
static void hci_cmd_timeout(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev,
|
|
cmd_timer.work);
|
|
|
|
if (hdev->req_skb) {
|
|
u16 opcode = hci_skb_opcode(hdev->req_skb);
|
|
|
|
bt_dev_err(hdev, "command 0x%4.4x tx timeout", opcode);
|
|
|
|
hci_cmd_sync_cancel_sync(hdev, ETIMEDOUT);
|
|
} else {
|
|
bt_dev_err(hdev, "command tx timeout");
|
|
}
|
|
|
|
if (hdev->cmd_timeout)
|
|
hdev->cmd_timeout(hdev);
|
|
|
|
atomic_set(&hdev->cmd_cnt, 1);
|
|
queue_work(hdev->workqueue, &hdev->cmd_work);
|
|
}
|
|
|
|
/* HCI ncmd timer function */
|
|
static void hci_ncmd_timeout(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev,
|
|
ncmd_timer.work);
|
|
|
|
bt_dev_err(hdev, "Controller not accepting commands anymore: ncmd = 0");
|
|
|
|
/* During HCI_INIT phase no events can be injected if the ncmd timer
|
|
* triggers since the procedure has its own timeout handling.
|
|
*/
|
|
if (test_bit(HCI_INIT, &hdev->flags))
|
|
return;
|
|
|
|
/* This is an irrecoverable state, inject hardware error event */
|
|
hci_reset_dev(hdev);
|
|
}
|
|
|
|
struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
|
|
bdaddr_t *bdaddr, u8 bdaddr_type)
|
|
{
|
|
struct oob_data *data;
|
|
|
|
list_for_each_entry(data, &hdev->remote_oob_data, list) {
|
|
if (bacmp(bdaddr, &data->bdaddr) != 0)
|
|
continue;
|
|
if (data->bdaddr_type != bdaddr_type)
|
|
continue;
|
|
return data;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 bdaddr_type)
|
|
{
|
|
struct oob_data *data;
|
|
|
|
data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type);
|
|
if (!data)
|
|
return -ENOENT;
|
|
|
|
BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type);
|
|
|
|
list_del(&data->list);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void hci_remote_oob_data_clear(struct hci_dev *hdev)
|
|
{
|
|
struct oob_data *data, *n;
|
|
|
|
list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) {
|
|
list_del(&data->list);
|
|
kfree(data);
|
|
}
|
|
}
|
|
|
|
int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 bdaddr_type, u8 *hash192, u8 *rand192,
|
|
u8 *hash256, u8 *rand256)
|
|
{
|
|
struct oob_data *data;
|
|
|
|
data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type);
|
|
if (!data) {
|
|
data = kmalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
bacpy(&data->bdaddr, bdaddr);
|
|
data->bdaddr_type = bdaddr_type;
|
|
list_add(&data->list, &hdev->remote_oob_data);
|
|
}
|
|
|
|
if (hash192 && rand192) {
|
|
memcpy(data->hash192, hash192, sizeof(data->hash192));
|
|
memcpy(data->rand192, rand192, sizeof(data->rand192));
|
|
if (hash256 && rand256)
|
|
data->present = 0x03;
|
|
} else {
|
|
memset(data->hash192, 0, sizeof(data->hash192));
|
|
memset(data->rand192, 0, sizeof(data->rand192));
|
|
if (hash256 && rand256)
|
|
data->present = 0x02;
|
|
else
|
|
data->present = 0x00;
|
|
}
|
|
|
|
if (hash256 && rand256) {
|
|
memcpy(data->hash256, hash256, sizeof(data->hash256));
|
|
memcpy(data->rand256, rand256, sizeof(data->rand256));
|
|
} else {
|
|
memset(data->hash256, 0, sizeof(data->hash256));
|
|
memset(data->rand256, 0, sizeof(data->rand256));
|
|
if (hash192 && rand192)
|
|
data->present = 0x01;
|
|
}
|
|
|
|
BT_DBG("%s for %pMR", hdev->name, bdaddr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance)
|
|
{
|
|
struct adv_info *adv_instance;
|
|
|
|
list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
|
|
if (adv_instance->instance == instance)
|
|
return adv_instance;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance)
|
|
{
|
|
struct adv_info *cur_instance;
|
|
|
|
cur_instance = hci_find_adv_instance(hdev, instance);
|
|
if (!cur_instance)
|
|
return NULL;
|
|
|
|
if (cur_instance == list_last_entry(&hdev->adv_instances,
|
|
struct adv_info, list))
|
|
return list_first_entry(&hdev->adv_instances,
|
|
struct adv_info, list);
|
|
else
|
|
return list_next_entry(cur_instance, list);
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance)
|
|
{
|
|
struct adv_info *adv_instance;
|
|
|
|
adv_instance = hci_find_adv_instance(hdev, instance);
|
|
if (!adv_instance)
|
|
return -ENOENT;
|
|
|
|
BT_DBG("%s removing %dMR", hdev->name, instance);
|
|
|
|
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;
|
|
}
|
|
|
|
cancel_delayed_work_sync(&adv_instance->rpa_expired_cb);
|
|
|
|
list_del(&adv_instance->list);
|
|
kfree(adv_instance);
|
|
|
|
hdev->adv_instance_cnt--;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired)
|
|
{
|
|
struct adv_info *adv_instance, *n;
|
|
|
|
list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list)
|
|
adv_instance->rpa_expired = rpa_expired;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
void hci_adv_instances_clear(struct hci_dev *hdev)
|
|
{
|
|
struct adv_info *adv_instance, *n;
|
|
|
|
if (hdev->adv_instance_timeout) {
|
|
disable_delayed_work(&hdev->adv_instance_expire);
|
|
hdev->adv_instance_timeout = 0;
|
|
}
|
|
|
|
list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
|
|
disable_delayed_work_sync(&adv_instance->rpa_expired_cb);
|
|
list_del(&adv_instance->list);
|
|
kfree(adv_instance);
|
|
}
|
|
|
|
hdev->adv_instance_cnt = 0;
|
|
hdev->cur_adv_instance = 0x00;
|
|
}
|
|
|
|
static void adv_instance_rpa_expired(struct work_struct *work)
|
|
{
|
|
struct adv_info *adv_instance = container_of(work, struct adv_info,
|
|
rpa_expired_cb.work);
|
|
|
|
BT_DBG("");
|
|
|
|
adv_instance->rpa_expired = true;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
|
|
u32 flags, u16 adv_data_len, u8 *adv_data,
|
|
u16 scan_rsp_len, u8 *scan_rsp_data,
|
|
u16 timeout, u16 duration, s8 tx_power,
|
|
u32 min_interval, u32 max_interval,
|
|
u8 mesh_handle)
|
|
{
|
|
struct adv_info *adv;
|
|
|
|
adv = hci_find_adv_instance(hdev, instance);
|
|
if (adv) {
|
|
memset(adv->adv_data, 0, sizeof(adv->adv_data));
|
|
memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data));
|
|
memset(adv->per_adv_data, 0, sizeof(adv->per_adv_data));
|
|
} else {
|
|
if (hdev->adv_instance_cnt >= hdev->le_num_of_adv_sets ||
|
|
instance < 1 || instance > hdev->le_num_of_adv_sets + 1)
|
|
return ERR_PTR(-EOVERFLOW);
|
|
|
|
adv = kzalloc(sizeof(*adv), GFP_KERNEL);
|
|
if (!adv)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
adv->pending = true;
|
|
adv->instance = instance;
|
|
|
|
/* If controller support only one set and the instance is set to
|
|
* 1 then there is no option other than using handle 0x00.
|
|
*/
|
|
if (hdev->le_num_of_adv_sets == 1 && instance == 1)
|
|
adv->handle = 0x00;
|
|
else
|
|
adv->handle = instance;
|
|
|
|
list_add(&adv->list, &hdev->adv_instances);
|
|
hdev->adv_instance_cnt++;
|
|
}
|
|
|
|
adv->flags = flags;
|
|
adv->min_interval = min_interval;
|
|
adv->max_interval = max_interval;
|
|
adv->tx_power = tx_power;
|
|
/* Defining a mesh_handle changes the timing units to ms,
|
|
* rather than seconds, and ties the instance to the requested
|
|
* mesh_tx queue.
|
|
*/
|
|
adv->mesh = mesh_handle;
|
|
|
|
hci_set_adv_instance_data(hdev, instance, adv_data_len, adv_data,
|
|
scan_rsp_len, scan_rsp_data);
|
|
|
|
adv->timeout = timeout;
|
|
adv->remaining_time = timeout;
|
|
|
|
if (duration == 0)
|
|
adv->duration = hdev->def_multi_adv_rotation_duration;
|
|
else
|
|
adv->duration = duration;
|
|
|
|
INIT_DELAYED_WORK(&adv->rpa_expired_cb, adv_instance_rpa_expired);
|
|
|
|
BT_DBG("%s for %dMR", hdev->name, instance);
|
|
|
|
return adv;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
|
|
u32 flags, u8 data_len, u8 *data,
|
|
u32 min_interval, u32 max_interval)
|
|
{
|
|
struct adv_info *adv;
|
|
|
|
adv = hci_add_adv_instance(hdev, instance, flags, 0, NULL, 0, NULL,
|
|
0, 0, HCI_ADV_TX_POWER_NO_PREFERENCE,
|
|
min_interval, max_interval, 0);
|
|
if (IS_ERR(adv))
|
|
return adv;
|
|
|
|
adv->periodic = true;
|
|
adv->per_adv_data_len = data_len;
|
|
|
|
if (data)
|
|
memcpy(adv->per_adv_data, data, data_len);
|
|
|
|
return adv;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
|
|
u16 adv_data_len, u8 *adv_data,
|
|
u16 scan_rsp_len, u8 *scan_rsp_data)
|
|
{
|
|
struct adv_info *adv;
|
|
|
|
adv = hci_find_adv_instance(hdev, instance);
|
|
|
|
/* If advertisement doesn't exist, we can't modify its data */
|
|
if (!adv)
|
|
return -ENOENT;
|
|
|
|
if (adv_data_len && ADV_DATA_CMP(adv, adv_data, adv_data_len)) {
|
|
memset(adv->adv_data, 0, sizeof(adv->adv_data));
|
|
memcpy(adv->adv_data, adv_data, adv_data_len);
|
|
adv->adv_data_len = adv_data_len;
|
|
adv->adv_data_changed = true;
|
|
}
|
|
|
|
if (scan_rsp_len && SCAN_RSP_CMP(adv, scan_rsp_data, scan_rsp_len)) {
|
|
memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data));
|
|
memcpy(adv->scan_rsp_data, scan_rsp_data, scan_rsp_len);
|
|
adv->scan_rsp_len = scan_rsp_len;
|
|
adv->scan_rsp_changed = true;
|
|
}
|
|
|
|
/* Mark as changed if there are flags which would affect it */
|
|
if (((adv->flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) ||
|
|
adv->flags & MGMT_ADV_FLAG_LOCAL_NAME)
|
|
adv->scan_rsp_changed = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance)
|
|
{
|
|
u32 flags;
|
|
struct adv_info *adv;
|
|
|
|
if (instance == 0x00) {
|
|
/* Instance 0 always manages the "Tx Power" and "Flags"
|
|
* fields
|
|
*/
|
|
flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
|
|
|
|
/* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting
|
|
* corresponds to the "connectable" instance flag.
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE))
|
|
flags |= MGMT_ADV_FLAG_CONNECTABLE;
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
|
|
flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
|
|
else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
|
|
flags |= MGMT_ADV_FLAG_DISCOV;
|
|
|
|
return flags;
|
|
}
|
|
|
|
adv = hci_find_adv_instance(hdev, instance);
|
|
|
|
/* Return 0 when we got an invalid instance identifier. */
|
|
if (!adv)
|
|
return 0;
|
|
|
|
return adv->flags;
|
|
}
|
|
|
|
bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance)
|
|
{
|
|
struct adv_info *adv;
|
|
|
|
/* Instance 0x00 always set local name */
|
|
if (instance == 0x00)
|
|
return true;
|
|
|
|
adv = hci_find_adv_instance(hdev, instance);
|
|
if (!adv)
|
|
return false;
|
|
|
|
if (adv->flags & MGMT_ADV_FLAG_APPEARANCE ||
|
|
adv->flags & MGMT_ADV_FLAG_LOCAL_NAME)
|
|
return true;
|
|
|
|
return adv->scan_rsp_len ? true : false;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
void hci_adv_monitors_clear(struct hci_dev *hdev)
|
|
{
|
|
struct adv_monitor *monitor;
|
|
int handle;
|
|
|
|
idr_for_each_entry(&hdev->adv_monitors_idr, monitor, handle)
|
|
hci_free_adv_monitor(hdev, monitor);
|
|
|
|
idr_destroy(&hdev->adv_monitors_idr);
|
|
}
|
|
|
|
/* Frees the monitor structure and do some bookkeepings.
|
|
* This function requires the caller holds hdev->lock.
|
|
*/
|
|
void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor)
|
|
{
|
|
struct adv_pattern *pattern;
|
|
struct adv_pattern *tmp;
|
|
|
|
if (!monitor)
|
|
return;
|
|
|
|
list_for_each_entry_safe(pattern, tmp, &monitor->patterns, list) {
|
|
list_del(&pattern->list);
|
|
kfree(pattern);
|
|
}
|
|
|
|
if (monitor->handle)
|
|
idr_remove(&hdev->adv_monitors_idr, monitor->handle);
|
|
|
|
if (monitor->state != ADV_MONITOR_STATE_NOT_REGISTERED) {
|
|
hdev->adv_monitors_cnt--;
|
|
mgmt_adv_monitor_removed(hdev, monitor->handle);
|
|
}
|
|
|
|
kfree(monitor);
|
|
}
|
|
|
|
/* Assigns handle to a monitor, and if offloading is supported and power is on,
|
|
* also attempts to forward the request to the controller.
|
|
* This function requires the caller holds hci_req_sync_lock.
|
|
*/
|
|
int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor)
|
|
{
|
|
int min, max, handle;
|
|
int status = 0;
|
|
|
|
if (!monitor)
|
|
return -EINVAL;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
min = HCI_MIN_ADV_MONITOR_HANDLE;
|
|
max = HCI_MIN_ADV_MONITOR_HANDLE + HCI_MAX_ADV_MONITOR_NUM_HANDLES;
|
|
handle = idr_alloc(&hdev->adv_monitors_idr, monitor, min, max,
|
|
GFP_KERNEL);
|
|
|
|
hci_dev_unlock(hdev);
|
|
|
|
if (handle < 0)
|
|
return handle;
|
|
|
|
monitor->handle = handle;
|
|
|
|
if (!hdev_is_powered(hdev))
|
|
return status;
|
|
|
|
switch (hci_get_adv_monitor_offload_ext(hdev)) {
|
|
case HCI_ADV_MONITOR_EXT_NONE:
|
|
bt_dev_dbg(hdev, "add monitor %d status %d",
|
|
monitor->handle, status);
|
|
/* Message was not forwarded to controller - not an error */
|
|
break;
|
|
|
|
case HCI_ADV_MONITOR_EXT_MSFT:
|
|
status = msft_add_monitor_pattern(hdev, monitor);
|
|
bt_dev_dbg(hdev, "add monitor %d msft status %d",
|
|
handle, status);
|
|
break;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/* Attempts to tell the controller and free the monitor. If somehow the
|
|
* controller doesn't have a corresponding handle, remove anyway.
|
|
* This function requires the caller holds hci_req_sync_lock.
|
|
*/
|
|
static int hci_remove_adv_monitor(struct hci_dev *hdev,
|
|
struct adv_monitor *monitor)
|
|
{
|
|
int status = 0;
|
|
int handle;
|
|
|
|
switch (hci_get_adv_monitor_offload_ext(hdev)) {
|
|
case HCI_ADV_MONITOR_EXT_NONE: /* also goes here when powered off */
|
|
bt_dev_dbg(hdev, "remove monitor %d status %d",
|
|
monitor->handle, status);
|
|
goto free_monitor;
|
|
|
|
case HCI_ADV_MONITOR_EXT_MSFT:
|
|
handle = monitor->handle;
|
|
status = msft_remove_monitor(hdev, monitor);
|
|
bt_dev_dbg(hdev, "remove monitor %d msft status %d",
|
|
handle, status);
|
|
break;
|
|
}
|
|
|
|
/* In case no matching handle registered, just free the monitor */
|
|
if (status == -ENOENT)
|
|
goto free_monitor;
|
|
|
|
return status;
|
|
|
|
free_monitor:
|
|
if (status == -ENOENT)
|
|
bt_dev_warn(hdev, "Removing monitor with no matching handle %d",
|
|
monitor->handle);
|
|
hci_free_adv_monitor(hdev, monitor);
|
|
|
|
return status;
|
|
}
|
|
|
|
/* This function requires the caller holds hci_req_sync_lock */
|
|
int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle)
|
|
{
|
|
struct adv_monitor *monitor = idr_find(&hdev->adv_monitors_idr, handle);
|
|
|
|
if (!monitor)
|
|
return -EINVAL;
|
|
|
|
return hci_remove_adv_monitor(hdev, monitor);
|
|
}
|
|
|
|
/* This function requires the caller holds hci_req_sync_lock */
|
|
int hci_remove_all_adv_monitor(struct hci_dev *hdev)
|
|
{
|
|
struct adv_monitor *monitor;
|
|
int idr_next_id = 0;
|
|
int status = 0;
|
|
|
|
while (1) {
|
|
monitor = idr_get_next(&hdev->adv_monitors_idr, &idr_next_id);
|
|
if (!monitor)
|
|
break;
|
|
|
|
status = hci_remove_adv_monitor(hdev, monitor);
|
|
if (status)
|
|
return status;
|
|
|
|
idr_next_id++;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
bool hci_is_adv_monitoring(struct hci_dev *hdev)
|
|
{
|
|
return !idr_is_empty(&hdev->adv_monitors_idr);
|
|
}
|
|
|
|
int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev)
|
|
{
|
|
if (msft_monitor_supported(hdev))
|
|
return HCI_ADV_MONITOR_EXT_MSFT;
|
|
|
|
return HCI_ADV_MONITOR_EXT_NONE;
|
|
}
|
|
|
|
struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list,
|
|
bdaddr_t *bdaddr, u8 type)
|
|
{
|
|
struct bdaddr_list *b;
|
|
|
|
list_for_each_entry(b, bdaddr_list, list) {
|
|
if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type)
|
|
return b;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
|
|
struct list_head *bdaddr_list, bdaddr_t *bdaddr,
|
|
u8 type)
|
|
{
|
|
struct bdaddr_list_with_irk *b;
|
|
|
|
list_for_each_entry(b, bdaddr_list, list) {
|
|
if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type)
|
|
return b;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct bdaddr_list_with_flags *
|
|
hci_bdaddr_list_lookup_with_flags(struct list_head *bdaddr_list,
|
|
bdaddr_t *bdaddr, u8 type)
|
|
{
|
|
struct bdaddr_list_with_flags *b;
|
|
|
|
list_for_each_entry(b, bdaddr_list, list) {
|
|
if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type)
|
|
return b;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void hci_bdaddr_list_clear(struct list_head *bdaddr_list)
|
|
{
|
|
struct bdaddr_list *b, *n;
|
|
|
|
list_for_each_entry_safe(b, n, bdaddr_list, list) {
|
|
list_del(&b->list);
|
|
kfree(b);
|
|
}
|
|
}
|
|
|
|
int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type)
|
|
{
|
|
struct bdaddr_list *entry;
|
|
|
|
if (!bacmp(bdaddr, BDADDR_ANY))
|
|
return -EBADF;
|
|
|
|
if (hci_bdaddr_list_lookup(list, bdaddr, type))
|
|
return -EEXIST;
|
|
|
|
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
bacpy(&entry->bdaddr, bdaddr);
|
|
entry->bdaddr_type = type;
|
|
|
|
list_add(&entry->list, list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
|
|
u8 type, u8 *peer_irk, u8 *local_irk)
|
|
{
|
|
struct bdaddr_list_with_irk *entry;
|
|
|
|
if (!bacmp(bdaddr, BDADDR_ANY))
|
|
return -EBADF;
|
|
|
|
if (hci_bdaddr_list_lookup(list, bdaddr, type))
|
|
return -EEXIST;
|
|
|
|
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
bacpy(&entry->bdaddr, bdaddr);
|
|
entry->bdaddr_type = type;
|
|
|
|
if (peer_irk)
|
|
memcpy(entry->peer_irk, peer_irk, 16);
|
|
|
|
if (local_irk)
|
|
memcpy(entry->local_irk, local_irk, 16);
|
|
|
|
list_add(&entry->list, list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
|
|
u8 type, u32 flags)
|
|
{
|
|
struct bdaddr_list_with_flags *entry;
|
|
|
|
if (!bacmp(bdaddr, BDADDR_ANY))
|
|
return -EBADF;
|
|
|
|
if (hci_bdaddr_list_lookup(list, bdaddr, type))
|
|
return -EEXIST;
|
|
|
|
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
bacpy(&entry->bdaddr, bdaddr);
|
|
entry->bdaddr_type = type;
|
|
entry->flags = flags;
|
|
|
|
list_add(&entry->list, list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type)
|
|
{
|
|
struct bdaddr_list *entry;
|
|
|
|
if (!bacmp(bdaddr, BDADDR_ANY)) {
|
|
hci_bdaddr_list_clear(list);
|
|
return 0;
|
|
}
|
|
|
|
entry = hci_bdaddr_list_lookup(list, bdaddr, type);
|
|
if (!entry)
|
|
return -ENOENT;
|
|
|
|
list_del(&entry->list);
|
|
kfree(entry);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
|
|
u8 type)
|
|
{
|
|
struct bdaddr_list_with_irk *entry;
|
|
|
|
if (!bacmp(bdaddr, BDADDR_ANY)) {
|
|
hci_bdaddr_list_clear(list);
|
|
return 0;
|
|
}
|
|
|
|
entry = hci_bdaddr_list_lookup_with_irk(list, bdaddr, type);
|
|
if (!entry)
|
|
return -ENOENT;
|
|
|
|
list_del(&entry->list);
|
|
kfree(entry);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
|
|
u8 type)
|
|
{
|
|
struct bdaddr_list_with_flags *entry;
|
|
|
|
if (!bacmp(bdaddr, BDADDR_ANY)) {
|
|
hci_bdaddr_list_clear(list);
|
|
return 0;
|
|
}
|
|
|
|
entry = hci_bdaddr_list_lookup_with_flags(list, bdaddr, type);
|
|
if (!entry)
|
|
return -ENOENT;
|
|
|
|
list_del(&entry->list);
|
|
kfree(entry);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
|
|
bdaddr_t *addr, u8 addr_type)
|
|
{
|
|
struct hci_conn_params *params;
|
|
|
|
list_for_each_entry(params, &hdev->le_conn_params, list) {
|
|
if (bacmp(¶ms->addr, addr) == 0 &&
|
|
params->addr_type == addr_type) {
|
|
return params;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock or rcu_read_lock */
|
|
struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
|
|
bdaddr_t *addr, u8 addr_type)
|
|
{
|
|
struct hci_conn_params *param;
|
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(param, list, action) {
|
|
if (bacmp(¶m->addr, addr) == 0 &&
|
|
param->addr_type == addr_type) {
|
|
rcu_read_unlock();
|
|
return param;
|
|
}
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
void hci_pend_le_list_del_init(struct hci_conn_params *param)
|
|
{
|
|
if (list_empty(¶m->action))
|
|
return;
|
|
|
|
list_del_rcu(¶m->action);
|
|
synchronize_rcu();
|
|
INIT_LIST_HEAD(¶m->action);
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
void hci_pend_le_list_add(struct hci_conn_params *param,
|
|
struct list_head *list)
|
|
{
|
|
list_add_rcu(¶m->action, list);
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
|
|
bdaddr_t *addr, u8 addr_type)
|
|
{
|
|
struct hci_conn_params *params;
|
|
|
|
params = hci_conn_params_lookup(hdev, addr, addr_type);
|
|
if (params)
|
|
return params;
|
|
|
|
params = kzalloc(sizeof(*params), GFP_KERNEL);
|
|
if (!params) {
|
|
bt_dev_err(hdev, "out of memory");
|
|
return NULL;
|
|
}
|
|
|
|
bacpy(¶ms->addr, addr);
|
|
params->addr_type = addr_type;
|
|
|
|
list_add(¶ms->list, &hdev->le_conn_params);
|
|
INIT_LIST_HEAD(¶ms->action);
|
|
|
|
params->conn_min_interval = hdev->le_conn_min_interval;
|
|
params->conn_max_interval = hdev->le_conn_max_interval;
|
|
params->conn_latency = hdev->le_conn_latency;
|
|
params->supervision_timeout = hdev->le_supv_timeout;
|
|
params->auto_connect = HCI_AUTO_CONN_DISABLED;
|
|
|
|
BT_DBG("addr %pMR (type %u)", addr, addr_type);
|
|
|
|
return params;
|
|
}
|
|
|
|
void hci_conn_params_free(struct hci_conn_params *params)
|
|
{
|
|
hci_pend_le_list_del_init(params);
|
|
|
|
if (params->conn) {
|
|
hci_conn_drop(params->conn);
|
|
hci_conn_put(params->conn);
|
|
}
|
|
|
|
list_del(¶ms->list);
|
|
kfree(params);
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
|
|
{
|
|
struct hci_conn_params *params;
|
|
|
|
params = hci_conn_params_lookup(hdev, addr, addr_type);
|
|
if (!params)
|
|
return;
|
|
|
|
hci_conn_params_free(params);
|
|
|
|
hci_update_passive_scan(hdev);
|
|
|
|
BT_DBG("addr %pMR (type %u)", addr, addr_type);
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
void hci_conn_params_clear_disabled(struct hci_dev *hdev)
|
|
{
|
|
struct hci_conn_params *params, *tmp;
|
|
|
|
list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) {
|
|
if (params->auto_connect != HCI_AUTO_CONN_DISABLED)
|
|
continue;
|
|
|
|
/* If trying to establish one time connection to disabled
|
|
* device, leave the params, but mark them as just once.
|
|
*/
|
|
if (params->explicit_connect) {
|
|
params->auto_connect = HCI_AUTO_CONN_EXPLICIT;
|
|
continue;
|
|
}
|
|
|
|
hci_conn_params_free(params);
|
|
}
|
|
|
|
BT_DBG("All LE disabled connection parameters were removed");
|
|
}
|
|
|
|
/* This function requires the caller holds hdev->lock */
|
|
static void hci_conn_params_clear_all(struct hci_dev *hdev)
|
|
{
|
|
struct hci_conn_params *params, *tmp;
|
|
|
|
list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list)
|
|
hci_conn_params_free(params);
|
|
|
|
BT_DBG("All LE connection parameters were removed");
|
|
}
|
|
|
|
/* Copy the Identity Address of the controller.
|
|
*
|
|
* If the controller has a public BD_ADDR, then by default use that one.
|
|
* If this is a LE only controller without a public address, default to
|
|
* the static random address.
|
|
*
|
|
* For debugging purposes it is possible to force controllers with a
|
|
* public address to use the static random address instead.
|
|
*
|
|
* In case BR/EDR has been disabled on a dual-mode controller and
|
|
* userspace has configured a static address, then that address
|
|
* becomes the identity address instead of the public BR/EDR address.
|
|
*/
|
|
void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
|
|
u8 *bdaddr_type)
|
|
{
|
|
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))) {
|
|
bacpy(bdaddr, &hdev->static_addr);
|
|
*bdaddr_type = ADDR_LE_DEV_RANDOM;
|
|
} else {
|
|
bacpy(bdaddr, &hdev->bdaddr);
|
|
*bdaddr_type = ADDR_LE_DEV_PUBLIC;
|
|
}
|
|
}
|
|
|
|
static void hci_clear_wake_reason(struct hci_dev *hdev)
|
|
{
|
|
hci_dev_lock(hdev);
|
|
|
|
hdev->wake_reason = 0;
|
|
bacpy(&hdev->wake_addr, BDADDR_ANY);
|
|
hdev->wake_addr_type = 0;
|
|
|
|
hci_dev_unlock(hdev);
|
|
}
|
|
|
|
static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action,
|
|
void *data)
|
|
{
|
|
struct hci_dev *hdev =
|
|
container_of(nb, struct hci_dev, suspend_notifier);
|
|
int ret = 0;
|
|
|
|
/* Userspace has full control of this device. Do nothing. */
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
|
|
return NOTIFY_DONE;
|
|
|
|
/* To avoid a potential race with hci_unregister_dev. */
|
|
hci_dev_hold(hdev);
|
|
|
|
switch (action) {
|
|
case PM_HIBERNATION_PREPARE:
|
|
case PM_SUSPEND_PREPARE:
|
|
ret = hci_suspend_dev(hdev);
|
|
break;
|
|
case PM_POST_HIBERNATION:
|
|
case PM_POST_SUSPEND:
|
|
ret = hci_resume_dev(hdev);
|
|
break;
|
|
}
|
|
|
|
if (ret)
|
|
bt_dev_err(hdev, "Suspend notifier action (%lu) failed: %d",
|
|
action, ret);
|
|
|
|
hci_dev_put(hdev);
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
/* Alloc HCI device */
|
|
struct hci_dev *hci_alloc_dev_priv(int sizeof_priv)
|
|
{
|
|
struct hci_dev *hdev;
|
|
unsigned int alloc_size;
|
|
|
|
alloc_size = sizeof(*hdev);
|
|
if (sizeof_priv) {
|
|
/* Fixme: May need ALIGN-ment? */
|
|
alloc_size += sizeof_priv;
|
|
}
|
|
|
|
hdev = kzalloc(alloc_size, GFP_KERNEL);
|
|
if (!hdev)
|
|
return NULL;
|
|
|
|
hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1);
|
|
hdev->esco_type = (ESCO_HV1);
|
|
hdev->link_mode = (HCI_LM_ACCEPT);
|
|
hdev->num_iac = 0x01; /* One IAC support is mandatory */
|
|
hdev->io_capability = 0x03; /* No Input No Output */
|
|
hdev->manufacturer = 0xffff; /* Default to internal use */
|
|
hdev->inq_tx_power = HCI_TX_POWER_INVALID;
|
|
hdev->adv_tx_power = HCI_TX_POWER_INVALID;
|
|
hdev->adv_instance_cnt = 0;
|
|
hdev->cur_adv_instance = 0x00;
|
|
hdev->adv_instance_timeout = 0;
|
|
|
|
hdev->advmon_allowlist_duration = 300;
|
|
hdev->advmon_no_filter_duration = 500;
|
|
hdev->enable_advmon_interleave_scan = 0x00; /* Default to disable */
|
|
|
|
hdev->sniff_max_interval = 800;
|
|
hdev->sniff_min_interval = 80;
|
|
|
|
hdev->le_adv_channel_map = 0x07;
|
|
hdev->le_adv_min_interval = 0x0800;
|
|
hdev->le_adv_max_interval = 0x0800;
|
|
hdev->le_scan_interval = DISCOV_LE_SCAN_INT_FAST;
|
|
hdev->le_scan_window = DISCOV_LE_SCAN_WIN_FAST;
|
|
hdev->le_scan_int_suspend = DISCOV_LE_SCAN_INT_SLOW1;
|
|
hdev->le_scan_window_suspend = DISCOV_LE_SCAN_WIN_SLOW1;
|
|
hdev->le_scan_int_discovery = DISCOV_LE_SCAN_INT;
|
|
hdev->le_scan_window_discovery = DISCOV_LE_SCAN_WIN;
|
|
hdev->le_scan_int_adv_monitor = DISCOV_LE_SCAN_INT_FAST;
|
|
hdev->le_scan_window_adv_monitor = DISCOV_LE_SCAN_WIN_FAST;
|
|
hdev->le_scan_int_connect = DISCOV_LE_SCAN_INT_CONN;
|
|
hdev->le_scan_window_connect = DISCOV_LE_SCAN_WIN_CONN;
|
|
hdev->le_conn_min_interval = 0x0018;
|
|
hdev->le_conn_max_interval = 0x0028;
|
|
hdev->le_conn_latency = 0x0000;
|
|
hdev->le_supv_timeout = 0x002a;
|
|
hdev->le_def_tx_len = 0x001b;
|
|
hdev->le_def_tx_time = 0x0148;
|
|
hdev->le_max_tx_len = 0x001b;
|
|
hdev->le_max_tx_time = 0x0148;
|
|
hdev->le_max_rx_len = 0x001b;
|
|
hdev->le_max_rx_time = 0x0148;
|
|
hdev->le_max_key_size = SMP_MAX_ENC_KEY_SIZE;
|
|
hdev->le_min_key_size = SMP_MIN_ENC_KEY_SIZE;
|
|
hdev->le_tx_def_phys = HCI_LE_SET_PHY_1M;
|
|
hdev->le_rx_def_phys = HCI_LE_SET_PHY_1M;
|
|
hdev->le_num_of_adv_sets = HCI_MAX_ADV_INSTANCES;
|
|
hdev->def_multi_adv_rotation_duration = HCI_DEFAULT_ADV_DURATION;
|
|
hdev->def_le_autoconnect_timeout = HCI_LE_CONN_TIMEOUT;
|
|
hdev->min_le_tx_power = HCI_TX_POWER_INVALID;
|
|
hdev->max_le_tx_power = HCI_TX_POWER_INVALID;
|
|
|
|
hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT;
|
|
hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT;
|
|
hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE;
|
|
hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE;
|
|
hdev->auth_payload_timeout = DEFAULT_AUTH_PAYLOAD_TIMEOUT;
|
|
hdev->min_enc_key_size = HCI_MIN_ENC_KEY_SIZE;
|
|
|
|
/* default 1.28 sec page scan */
|
|
hdev->def_page_scan_type = PAGE_SCAN_TYPE_STANDARD;
|
|
hdev->def_page_scan_int = 0x0800;
|
|
hdev->def_page_scan_window = 0x0012;
|
|
|
|
mutex_init(&hdev->lock);
|
|
mutex_init(&hdev->req_lock);
|
|
|
|
ida_init(&hdev->unset_handle_ida);
|
|
|
|
INIT_LIST_HEAD(&hdev->mesh_pending);
|
|
INIT_LIST_HEAD(&hdev->mgmt_pending);
|
|
INIT_LIST_HEAD(&hdev->reject_list);
|
|
INIT_LIST_HEAD(&hdev->accept_list);
|
|
INIT_LIST_HEAD(&hdev->uuids);
|
|
INIT_LIST_HEAD(&hdev->link_keys);
|
|
INIT_LIST_HEAD(&hdev->long_term_keys);
|
|
INIT_LIST_HEAD(&hdev->identity_resolving_keys);
|
|
INIT_LIST_HEAD(&hdev->remote_oob_data);
|
|
INIT_LIST_HEAD(&hdev->le_accept_list);
|
|
INIT_LIST_HEAD(&hdev->le_resolv_list);
|
|
INIT_LIST_HEAD(&hdev->le_conn_params);
|
|
INIT_LIST_HEAD(&hdev->pend_le_conns);
|
|
INIT_LIST_HEAD(&hdev->pend_le_reports);
|
|
INIT_LIST_HEAD(&hdev->conn_hash.list);
|
|
INIT_LIST_HEAD(&hdev->adv_instances);
|
|
INIT_LIST_HEAD(&hdev->blocked_keys);
|
|
INIT_LIST_HEAD(&hdev->monitored_devices);
|
|
|
|
INIT_LIST_HEAD(&hdev->local_codecs);
|
|
INIT_WORK(&hdev->rx_work, hci_rx_work);
|
|
INIT_WORK(&hdev->cmd_work, hci_cmd_work);
|
|
INIT_WORK(&hdev->tx_work, hci_tx_work);
|
|
INIT_WORK(&hdev->power_on, hci_power_on);
|
|
INIT_WORK(&hdev->error_reset, hci_error_reset);
|
|
|
|
hci_cmd_sync_init(hdev);
|
|
|
|
INIT_DELAYED_WORK(&hdev->power_off, hci_power_off);
|
|
|
|
skb_queue_head_init(&hdev->rx_q);
|
|
skb_queue_head_init(&hdev->cmd_q);
|
|
skb_queue_head_init(&hdev->raw_q);
|
|
|
|
init_waitqueue_head(&hdev->req_wait_q);
|
|
|
|
INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout);
|
|
INIT_DELAYED_WORK(&hdev->ncmd_timer, hci_ncmd_timeout);
|
|
|
|
hci_devcd_setup(hdev);
|
|
|
|
hci_init_sysfs(hdev);
|
|
discovery_init(hdev);
|
|
|
|
return hdev;
|
|
}
|
|
EXPORT_SYMBOL(hci_alloc_dev_priv);
|
|
|
|
/* Free HCI device */
|
|
void hci_free_dev(struct hci_dev *hdev)
|
|
{
|
|
/* will free via device release */
|
|
put_device(&hdev->dev);
|
|
}
|
|
EXPORT_SYMBOL(hci_free_dev);
|
|
|
|
/* Register HCI device */
|
|
int hci_register_dev(struct hci_dev *hdev)
|
|
{
|
|
int id, error;
|
|
|
|
if (!hdev->open || !hdev->close || !hdev->send)
|
|
return -EINVAL;
|
|
|
|
id = ida_alloc_max(&hci_index_ida, HCI_MAX_ID - 1, GFP_KERNEL);
|
|
if (id < 0)
|
|
return id;
|
|
|
|
error = dev_set_name(&hdev->dev, "hci%u", id);
|
|
if (error)
|
|
return error;
|
|
|
|
hdev->name = dev_name(&hdev->dev);
|
|
hdev->id = id;
|
|
|
|
BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
|
|
|
|
hdev->workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, hdev->name);
|
|
if (!hdev->workqueue) {
|
|
error = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
hdev->req_workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI,
|
|
hdev->name);
|
|
if (!hdev->req_workqueue) {
|
|
destroy_workqueue(hdev->workqueue);
|
|
error = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
if (!IS_ERR_OR_NULL(bt_debugfs))
|
|
hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs);
|
|
|
|
error = device_add(&hdev->dev);
|
|
if (error < 0)
|
|
goto err_wqueue;
|
|
|
|
hci_leds_init(hdev);
|
|
|
|
hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev,
|
|
RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops,
|
|
hdev);
|
|
if (hdev->rfkill) {
|
|
if (rfkill_register(hdev->rfkill) < 0) {
|
|
rfkill_destroy(hdev->rfkill);
|
|
hdev->rfkill = NULL;
|
|
}
|
|
}
|
|
|
|
if (hdev->rfkill && rfkill_blocked(hdev->rfkill))
|
|
hci_dev_set_flag(hdev, HCI_RFKILLED);
|
|
|
|
hci_dev_set_flag(hdev, HCI_SETUP);
|
|
hci_dev_set_flag(hdev, HCI_AUTO_OFF);
|
|
|
|
/* Assume BR/EDR support until proven otherwise (such as
|
|
* through reading supported features during init.
|
|
*/
|
|
hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
|
|
|
|
write_lock(&hci_dev_list_lock);
|
|
list_add(&hdev->list, &hci_dev_list);
|
|
write_unlock(&hci_dev_list_lock);
|
|
|
|
/* Devices that are marked for raw-only usage are unconfigured
|
|
* and should not be included in normal operation.
|
|
*/
|
|
if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
|
|
hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
|
|
|
|
/* Mark Remote Wakeup connection flag as supported if driver has wakeup
|
|
* callback.
|
|
*/
|
|
if (hdev->wakeup)
|
|
hdev->conn_flags |= HCI_CONN_FLAG_REMOTE_WAKEUP;
|
|
|
|
hci_sock_dev_event(hdev, HCI_DEV_REG);
|
|
hci_dev_hold(hdev);
|
|
|
|
error = hci_register_suspend_notifier(hdev);
|
|
if (error)
|
|
BT_WARN("register suspend notifier failed error:%d\n", error);
|
|
|
|
queue_work(hdev->req_workqueue, &hdev->power_on);
|
|
|
|
idr_init(&hdev->adv_monitors_idr);
|
|
msft_register(hdev);
|
|
|
|
return id;
|
|
|
|
err_wqueue:
|
|
debugfs_remove_recursive(hdev->debugfs);
|
|
destroy_workqueue(hdev->workqueue);
|
|
destroy_workqueue(hdev->req_workqueue);
|
|
err:
|
|
ida_free(&hci_index_ida, hdev->id);
|
|
|
|
return error;
|
|
}
|
|
EXPORT_SYMBOL(hci_register_dev);
|
|
|
|
/* Unregister HCI device */
|
|
void hci_unregister_dev(struct hci_dev *hdev)
|
|
{
|
|
BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
|
|
|
|
mutex_lock(&hdev->unregister_lock);
|
|
hci_dev_set_flag(hdev, HCI_UNREGISTER);
|
|
mutex_unlock(&hdev->unregister_lock);
|
|
|
|
write_lock(&hci_dev_list_lock);
|
|
list_del(&hdev->list);
|
|
write_unlock(&hci_dev_list_lock);
|
|
|
|
disable_work_sync(&hdev->rx_work);
|
|
disable_work_sync(&hdev->cmd_work);
|
|
disable_work_sync(&hdev->tx_work);
|
|
disable_work_sync(&hdev->power_on);
|
|
disable_work_sync(&hdev->error_reset);
|
|
|
|
hci_cmd_sync_clear(hdev);
|
|
|
|
hci_unregister_suspend_notifier(hdev);
|
|
|
|
hci_dev_do_close(hdev);
|
|
|
|
if (!test_bit(HCI_INIT, &hdev->flags) &&
|
|
!hci_dev_test_flag(hdev, HCI_SETUP) &&
|
|
!hci_dev_test_flag(hdev, HCI_CONFIG)) {
|
|
hci_dev_lock(hdev);
|
|
mgmt_index_removed(hdev);
|
|
hci_dev_unlock(hdev);
|
|
}
|
|
|
|
/* mgmt_index_removed should take care of emptying the
|
|
* pending list */
|
|
BUG_ON(!list_empty(&hdev->mgmt_pending));
|
|
|
|
hci_sock_dev_event(hdev, HCI_DEV_UNREG);
|
|
|
|
if (hdev->rfkill) {
|
|
rfkill_unregister(hdev->rfkill);
|
|
rfkill_destroy(hdev->rfkill);
|
|
}
|
|
|
|
device_del(&hdev->dev);
|
|
/* Actual cleanup is deferred until hci_release_dev(). */
|
|
hci_dev_put(hdev);
|
|
}
|
|
EXPORT_SYMBOL(hci_unregister_dev);
|
|
|
|
/* Release HCI device */
|
|
void hci_release_dev(struct hci_dev *hdev)
|
|
{
|
|
debugfs_remove_recursive(hdev->debugfs);
|
|
kfree_const(hdev->hw_info);
|
|
kfree_const(hdev->fw_info);
|
|
|
|
destroy_workqueue(hdev->workqueue);
|
|
destroy_workqueue(hdev->req_workqueue);
|
|
|
|
hci_dev_lock(hdev);
|
|
hci_bdaddr_list_clear(&hdev->reject_list);
|
|
hci_bdaddr_list_clear(&hdev->accept_list);
|
|
hci_uuids_clear(hdev);
|
|
hci_link_keys_clear(hdev);
|
|
hci_smp_ltks_clear(hdev);
|
|
hci_smp_irks_clear(hdev);
|
|
hci_remote_oob_data_clear(hdev);
|
|
hci_adv_instances_clear(hdev);
|
|
hci_adv_monitors_clear(hdev);
|
|
hci_bdaddr_list_clear(&hdev->le_accept_list);
|
|
hci_bdaddr_list_clear(&hdev->le_resolv_list);
|
|
hci_conn_params_clear_all(hdev);
|
|
hci_discovery_filter_clear(hdev);
|
|
hci_blocked_keys_clear(hdev);
|
|
hci_codec_list_clear(&hdev->local_codecs);
|
|
msft_release(hdev);
|
|
hci_dev_unlock(hdev);
|
|
|
|
ida_destroy(&hdev->unset_handle_ida);
|
|
ida_free(&hci_index_ida, hdev->id);
|
|
kfree_skb(hdev->sent_cmd);
|
|
kfree_skb(hdev->req_skb);
|
|
kfree_skb(hdev->recv_event);
|
|
kfree(hdev);
|
|
}
|
|
EXPORT_SYMBOL(hci_release_dev);
|
|
|
|
int hci_register_suspend_notifier(struct hci_dev *hdev)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (!hdev->suspend_notifier.notifier_call &&
|
|
!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) {
|
|
hdev->suspend_notifier.notifier_call = hci_suspend_notifier;
|
|
ret = register_pm_notifier(&hdev->suspend_notifier);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int hci_unregister_suspend_notifier(struct hci_dev *hdev)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (hdev->suspend_notifier.notifier_call) {
|
|
ret = unregister_pm_notifier(&hdev->suspend_notifier);
|
|
if (!ret)
|
|
hdev->suspend_notifier.notifier_call = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Cancel ongoing command synchronously:
|
|
*
|
|
* - Cancel command timer
|
|
* - Reset command counter
|
|
* - Cancel command request
|
|
*/
|
|
static void hci_cancel_cmd_sync(struct hci_dev *hdev, int err)
|
|
{
|
|
bt_dev_dbg(hdev, "err 0x%2.2x", err);
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
|
|
disable_delayed_work_sync(&hdev->cmd_timer);
|
|
disable_delayed_work_sync(&hdev->ncmd_timer);
|
|
} else {
|
|
cancel_delayed_work_sync(&hdev->cmd_timer);
|
|
cancel_delayed_work_sync(&hdev->ncmd_timer);
|
|
}
|
|
|
|
atomic_set(&hdev->cmd_cnt, 1);
|
|
|
|
hci_cmd_sync_cancel_sync(hdev, err);
|
|
}
|
|
|
|
/* Suspend HCI device */
|
|
int hci_suspend_dev(struct hci_dev *hdev)
|
|
{
|
|
int ret;
|
|
|
|
bt_dev_dbg(hdev, "");
|
|
|
|
/* Suspend should only act on when powered. */
|
|
if (!hdev_is_powered(hdev) ||
|
|
hci_dev_test_flag(hdev, HCI_UNREGISTER))
|
|
return 0;
|
|
|
|
/* If powering down don't attempt to suspend */
|
|
if (mgmt_powering_down(hdev))
|
|
return 0;
|
|
|
|
/* Cancel potentially blocking sync operation before suspend */
|
|
hci_cancel_cmd_sync(hdev, EHOSTDOWN);
|
|
|
|
hci_req_sync_lock(hdev);
|
|
ret = hci_suspend_sync(hdev);
|
|
hci_req_sync_unlock(hdev);
|
|
|
|
hci_clear_wake_reason(hdev);
|
|
mgmt_suspending(hdev, hdev->suspend_state);
|
|
|
|
hci_sock_dev_event(hdev, HCI_DEV_SUSPEND);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(hci_suspend_dev);
|
|
|
|
/* Resume HCI device */
|
|
int hci_resume_dev(struct hci_dev *hdev)
|
|
{
|
|
int ret;
|
|
|
|
bt_dev_dbg(hdev, "");
|
|
|
|
/* Resume should only act on when powered. */
|
|
if (!hdev_is_powered(hdev) ||
|
|
hci_dev_test_flag(hdev, HCI_UNREGISTER))
|
|
return 0;
|
|
|
|
/* If powering down don't attempt to resume */
|
|
if (mgmt_powering_down(hdev))
|
|
return 0;
|
|
|
|
hci_req_sync_lock(hdev);
|
|
ret = hci_resume_sync(hdev);
|
|
hci_req_sync_unlock(hdev);
|
|
|
|
mgmt_resuming(hdev, hdev->wake_reason, &hdev->wake_addr,
|
|
hdev->wake_addr_type);
|
|
|
|
hci_sock_dev_event(hdev, HCI_DEV_RESUME);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(hci_resume_dev);
|
|
|
|
/* Reset HCI device */
|
|
int hci_reset_dev(struct hci_dev *hdev)
|
|
{
|
|
static const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 };
|
|
struct sk_buff *skb;
|
|
|
|
skb = bt_skb_alloc(3, GFP_ATOMIC);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
|
|
skb_put_data(skb, hw_err, 3);
|
|
|
|
bt_dev_err(hdev, "Injecting HCI hardware error event");
|
|
|
|
/* Send Hardware Error to upper stack */
|
|
return hci_recv_frame(hdev, skb);
|
|
}
|
|
EXPORT_SYMBOL(hci_reset_dev);
|
|
|
|
static u8 hci_dev_classify_pkt_type(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
if (hdev->classify_pkt_type)
|
|
return hdev->classify_pkt_type(hdev, skb);
|
|
|
|
return hci_skb_pkt_type(skb);
|
|
}
|
|
|
|
/* Receive frame from HCI drivers */
|
|
int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
u8 dev_pkt_type;
|
|
|
|
if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
|
|
&& !test_bit(HCI_INIT, &hdev->flags))) {
|
|
kfree_skb(skb);
|
|
return -ENXIO;
|
|
}
|
|
|
|
/* Check if the driver agree with packet type classification */
|
|
dev_pkt_type = hci_dev_classify_pkt_type(hdev, skb);
|
|
if (hci_skb_pkt_type(skb) != dev_pkt_type) {
|
|
hci_skb_pkt_type(skb) = dev_pkt_type;
|
|
}
|
|
|
|
switch (hci_skb_pkt_type(skb)) {
|
|
case HCI_EVENT_PKT:
|
|
break;
|
|
case HCI_ACLDATA_PKT:
|
|
/* Detect if ISO packet has been sent as ACL */
|
|
if (hci_conn_num(hdev, ISO_LINK)) {
|
|
__u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle);
|
|
__u8 type;
|
|
|
|
type = hci_conn_lookup_type(hdev, hci_handle(handle));
|
|
if (type == ISO_LINK)
|
|
hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
|
|
}
|
|
break;
|
|
case HCI_SCODATA_PKT:
|
|
break;
|
|
case HCI_ISODATA_PKT:
|
|
break;
|
|
default:
|
|
kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Incoming skb */
|
|
bt_cb(skb)->incoming = 1;
|
|
|
|
/* Time stamp */
|
|
__net_timestamp(skb);
|
|
|
|
skb_queue_tail(&hdev->rx_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->rx_work);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hci_recv_frame);
|
|
|
|
/* Receive diagnostic message from HCI drivers */
|
|
int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
/* Mark as diagnostic packet */
|
|
hci_skb_pkt_type(skb) = HCI_DIAG_PKT;
|
|
|
|
/* Time stamp */
|
|
__net_timestamp(skb);
|
|
|
|
skb_queue_tail(&hdev->rx_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->rx_work);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hci_recv_diag);
|
|
|
|
void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...)
|
|
{
|
|
va_list vargs;
|
|
|
|
va_start(vargs, fmt);
|
|
kfree_const(hdev->hw_info);
|
|
hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs);
|
|
va_end(vargs);
|
|
}
|
|
EXPORT_SYMBOL(hci_set_hw_info);
|
|
|
|
void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...)
|
|
{
|
|
va_list vargs;
|
|
|
|
va_start(vargs, fmt);
|
|
kfree_const(hdev->fw_info);
|
|
hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs);
|
|
va_end(vargs);
|
|
}
|
|
EXPORT_SYMBOL(hci_set_fw_info);
|
|
|
|
/* ---- Interface to upper protocols ---- */
|
|
|
|
int hci_register_cb(struct hci_cb *cb)
|
|
{
|
|
BT_DBG("%p name %s", cb, cb->name);
|
|
|
|
mutex_lock(&hci_cb_list_lock);
|
|
list_add_tail(&cb->list, &hci_cb_list);
|
|
mutex_unlock(&hci_cb_list_lock);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hci_register_cb);
|
|
|
|
int hci_unregister_cb(struct hci_cb *cb)
|
|
{
|
|
BT_DBG("%p name %s", cb, cb->name);
|
|
|
|
mutex_lock(&hci_cb_list_lock);
|
|
list_del(&cb->list);
|
|
mutex_unlock(&hci_cb_list_lock);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hci_unregister_cb);
|
|
|
|
static int hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
int err;
|
|
|
|
BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb),
|
|
skb->len);
|
|
|
|
/* Time stamp */
|
|
__net_timestamp(skb);
|
|
|
|
/* Send copy to monitor */
|
|
hci_send_to_monitor(hdev, skb);
|
|
|
|
if (atomic_read(&hdev->promisc)) {
|
|
/* Send copy to the sockets */
|
|
hci_send_to_sock(hdev, skb);
|
|
}
|
|
|
|
/* Get rid of skb owner, prior to sending to the driver. */
|
|
skb_orphan(skb);
|
|
|
|
if (!test_bit(HCI_RUNNING, &hdev->flags)) {
|
|
kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = hdev->send(hdev, skb);
|
|
if (err < 0) {
|
|
bt_dev_err(hdev, "sending frame failed (%d)", err);
|
|
kfree_skb(skb);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Send HCI command */
|
|
int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
|
|
const void *param)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen);
|
|
|
|
skb = hci_cmd_sync_alloc(hdev, opcode, plen, param, NULL);
|
|
if (!skb) {
|
|
bt_dev_err(hdev, "no memory for command");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Stand-alone HCI commands must be flagged as
|
|
* single-command requests.
|
|
*/
|
|
bt_cb(skb)->hci.req_flags |= HCI_REQ_START;
|
|
|
|
skb_queue_tail(&hdev->cmd_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->cmd_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
|
|
const void *param)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
if (hci_opcode_ogf(opcode) != 0x3f) {
|
|
/* A controller receiving a command shall respond with either
|
|
* a Command Status Event or a Command Complete Event.
|
|
* Therefore, all standard HCI commands must be sent via the
|
|
* standard API, using hci_send_cmd or hci_cmd_sync helpers.
|
|
* Some vendors do not comply with this rule for vendor-specific
|
|
* commands and do not return any event. We want to support
|
|
* unresponded commands for such cases only.
|
|
*/
|
|
bt_dev_err(hdev, "unresponded command not supported");
|
|
return -EINVAL;
|
|
}
|
|
|
|
skb = hci_cmd_sync_alloc(hdev, opcode, plen, param, NULL);
|
|
if (!skb) {
|
|
bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)",
|
|
opcode);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
hci_send_frame(hdev, skb);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(__hci_cmd_send);
|
|
|
|
/* Get data from the previously sent command */
|
|
static void *hci_cmd_data(struct sk_buff *skb, __u16 opcode)
|
|
{
|
|
struct hci_command_hdr *hdr;
|
|
|
|
if (!skb || skb->len < HCI_COMMAND_HDR_SIZE)
|
|
return NULL;
|
|
|
|
hdr = (void *)skb->data;
|
|
|
|
if (hdr->opcode != cpu_to_le16(opcode))
|
|
return NULL;
|
|
|
|
return skb->data + HCI_COMMAND_HDR_SIZE;
|
|
}
|
|
|
|
/* Get data from the previously sent command */
|
|
void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
|
|
{
|
|
void *data;
|
|
|
|
/* Check if opcode matches last sent command */
|
|
data = hci_cmd_data(hdev->sent_cmd, opcode);
|
|
if (!data)
|
|
/* Check if opcode matches last request */
|
|
data = hci_cmd_data(hdev->req_skb, opcode);
|
|
|
|
return data;
|
|
}
|
|
|
|
/* Get data from last received event */
|
|
void *hci_recv_event_data(struct hci_dev *hdev, __u8 event)
|
|
{
|
|
struct hci_event_hdr *hdr;
|
|
int offset;
|
|
|
|
if (!hdev->recv_event)
|
|
return NULL;
|
|
|
|
hdr = (void *)hdev->recv_event->data;
|
|
offset = sizeof(*hdr);
|
|
|
|
if (hdr->evt != event) {
|
|
/* In case of LE metaevent check the subevent match */
|
|
if (hdr->evt == HCI_EV_LE_META) {
|
|
struct hci_ev_le_meta *ev;
|
|
|
|
ev = (void *)hdev->recv_event->data + offset;
|
|
offset += sizeof(*ev);
|
|
if (ev->subevent == event)
|
|
goto found;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
found:
|
|
bt_dev_dbg(hdev, "event 0x%2.2x", event);
|
|
|
|
return hdev->recv_event->data + offset;
|
|
}
|
|
|
|
/* Send ACL data */
|
|
static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
|
|
{
|
|
struct hci_acl_hdr *hdr;
|
|
int len = skb->len;
|
|
|
|
skb_push(skb, HCI_ACL_HDR_SIZE);
|
|
skb_reset_transport_header(skb);
|
|
hdr = (struct hci_acl_hdr *)skb_transport_header(skb);
|
|
hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags));
|
|
hdr->dlen = cpu_to_le16(len);
|
|
}
|
|
|
|
static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue,
|
|
struct sk_buff *skb, __u16 flags)
|
|
{
|
|
struct hci_conn *conn = chan->conn;
|
|
struct hci_dev *hdev = conn->hdev;
|
|
struct sk_buff *list;
|
|
|
|
skb->len = skb_headlen(skb);
|
|
skb->data_len = 0;
|
|
|
|
hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
|
|
|
|
hci_add_acl_hdr(skb, conn->handle, flags);
|
|
|
|
list = skb_shinfo(skb)->frag_list;
|
|
if (!list) {
|
|
/* Non fragmented */
|
|
BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
|
|
|
|
skb_queue_tail(queue, skb);
|
|
} else {
|
|
/* Fragmented */
|
|
BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
|
|
|
|
skb_shinfo(skb)->frag_list = NULL;
|
|
|
|
/* Queue all fragments atomically. We need to use spin_lock_bh
|
|
* here because of 6LoWPAN links, as there this function is
|
|
* called from softirq and using normal spin lock could cause
|
|
* deadlocks.
|
|
*/
|
|
spin_lock_bh(&queue->lock);
|
|
|
|
__skb_queue_tail(queue, skb);
|
|
|
|
flags &= ~ACL_START;
|
|
flags |= ACL_CONT;
|
|
do {
|
|
skb = list; list = list->next;
|
|
|
|
hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
|
|
hci_add_acl_hdr(skb, conn->handle, flags);
|
|
|
|
BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
|
|
|
|
__skb_queue_tail(queue, skb);
|
|
} while (list);
|
|
|
|
spin_unlock_bh(&queue->lock);
|
|
}
|
|
}
|
|
|
|
void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags)
|
|
{
|
|
struct hci_dev *hdev = chan->conn->hdev;
|
|
|
|
BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags);
|
|
|
|
hci_queue_acl(chan, &chan->data_q, skb, flags);
|
|
|
|
queue_work(hdev->workqueue, &hdev->tx_work);
|
|
}
|
|
|
|
/* Send SCO data */
|
|
void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
|
|
{
|
|
struct hci_dev *hdev = conn->hdev;
|
|
struct hci_sco_hdr hdr;
|
|
|
|
BT_DBG("%s len %d", hdev->name, skb->len);
|
|
|
|
hdr.handle = cpu_to_le16(conn->handle);
|
|
hdr.dlen = skb->len;
|
|
|
|
skb_push(skb, HCI_SCO_HDR_SIZE);
|
|
skb_reset_transport_header(skb);
|
|
memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE);
|
|
|
|
hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
|
|
|
|
skb_queue_tail(&conn->data_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->tx_work);
|
|
}
|
|
|
|
/* Send ISO data */
|
|
static void hci_add_iso_hdr(struct sk_buff *skb, __u16 handle, __u8 flags)
|
|
{
|
|
struct hci_iso_hdr *hdr;
|
|
int len = skb->len;
|
|
|
|
skb_push(skb, HCI_ISO_HDR_SIZE);
|
|
skb_reset_transport_header(skb);
|
|
hdr = (struct hci_iso_hdr *)skb_transport_header(skb);
|
|
hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags));
|
|
hdr->dlen = cpu_to_le16(len);
|
|
}
|
|
|
|
static void hci_queue_iso(struct hci_conn *conn, struct sk_buff_head *queue,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct hci_dev *hdev = conn->hdev;
|
|
struct sk_buff *list;
|
|
__u16 flags;
|
|
|
|
skb->len = skb_headlen(skb);
|
|
skb->data_len = 0;
|
|
|
|
hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
|
|
|
|
list = skb_shinfo(skb)->frag_list;
|
|
|
|
flags = hci_iso_flags_pack(list ? ISO_START : ISO_SINGLE, 0x00);
|
|
hci_add_iso_hdr(skb, conn->handle, flags);
|
|
|
|
if (!list) {
|
|
/* Non fragmented */
|
|
BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
|
|
|
|
skb_queue_tail(queue, skb);
|
|
} else {
|
|
/* Fragmented */
|
|
BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
|
|
|
|
skb_shinfo(skb)->frag_list = NULL;
|
|
|
|
__skb_queue_tail(queue, skb);
|
|
|
|
do {
|
|
skb = list; list = list->next;
|
|
|
|
hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
|
|
flags = hci_iso_flags_pack(list ? ISO_CONT : ISO_END,
|
|
0x00);
|
|
hci_add_iso_hdr(skb, conn->handle, flags);
|
|
|
|
BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
|
|
|
|
__skb_queue_tail(queue, skb);
|
|
} while (list);
|
|
}
|
|
}
|
|
|
|
void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb)
|
|
{
|
|
struct hci_dev *hdev = conn->hdev;
|
|
|
|
BT_DBG("%s len %d", hdev->name, skb->len);
|
|
|
|
hci_queue_iso(conn, &conn->data_q, skb);
|
|
|
|
queue_work(hdev->workqueue, &hdev->tx_work);
|
|
}
|
|
|
|
/* ---- HCI TX task (outgoing data) ---- */
|
|
|
|
/* HCI Connection scheduler */
|
|
static inline void hci_quote_sent(struct hci_conn *conn, int num, int *quote)
|
|
{
|
|
struct hci_dev *hdev;
|
|
int cnt, q;
|
|
|
|
if (!conn) {
|
|
*quote = 0;
|
|
return;
|
|
}
|
|
|
|
hdev = conn->hdev;
|
|
|
|
switch (conn->type) {
|
|
case ACL_LINK:
|
|
cnt = hdev->acl_cnt;
|
|
break;
|
|
case SCO_LINK:
|
|
case ESCO_LINK:
|
|
cnt = hdev->sco_cnt;
|
|
break;
|
|
case LE_LINK:
|
|
cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
|
|
break;
|
|
case ISO_LINK:
|
|
cnt = hdev->iso_mtu ? hdev->iso_cnt :
|
|
hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
|
|
break;
|
|
default:
|
|
cnt = 0;
|
|
bt_dev_err(hdev, "unknown link type %d", conn->type);
|
|
}
|
|
|
|
q = cnt / num;
|
|
*quote = q ? q : 1;
|
|
}
|
|
|
|
static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type,
|
|
int *quote)
|
|
{
|
|
struct hci_conn_hash *h = &hdev->conn_hash;
|
|
struct hci_conn *conn = NULL, *c;
|
|
unsigned int num = 0, min = ~0;
|
|
|
|
/* We don't have to lock device here. Connections are always
|
|
* added and removed with TX task disabled. */
|
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(c, &h->list, list) {
|
|
if (c->type != type || skb_queue_empty(&c->data_q))
|
|
continue;
|
|
|
|
if (c->state != BT_CONNECTED && c->state != BT_CONFIG)
|
|
continue;
|
|
|
|
num++;
|
|
|
|
if (c->sent < min) {
|
|
min = c->sent;
|
|
conn = c;
|
|
}
|
|
|
|
if (hci_conn_num(hdev, type) == num)
|
|
break;
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
hci_quote_sent(conn, num, quote);
|
|
|
|
BT_DBG("conn %p quote %d", conn, *quote);
|
|
return conn;
|
|
}
|
|
|
|
static void hci_link_tx_to(struct hci_dev *hdev, __u8 type)
|
|
{
|
|
struct hci_conn_hash *h = &hdev->conn_hash;
|
|
struct hci_conn *c;
|
|
|
|
bt_dev_err(hdev, "link tx timeout");
|
|
|
|
rcu_read_lock();
|
|
|
|
/* Kill stalled connections */
|
|
list_for_each_entry_rcu(c, &h->list, list) {
|
|
if (c->type == type && c->sent) {
|
|
bt_dev_err(hdev, "killing stalled connection %pMR",
|
|
&c->dst);
|
|
/* hci_disconnect might sleep, so, we have to release
|
|
* the RCU read lock before calling it.
|
|
*/
|
|
rcu_read_unlock();
|
|
hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM);
|
|
rcu_read_lock();
|
|
}
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type,
|
|
int *quote)
|
|
{
|
|
struct hci_conn_hash *h = &hdev->conn_hash;
|
|
struct hci_chan *chan = NULL;
|
|
unsigned int num = 0, min = ~0, cur_prio = 0;
|
|
struct hci_conn *conn;
|
|
int conn_num = 0;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(conn, &h->list, list) {
|
|
struct hci_chan *tmp;
|
|
|
|
if (conn->type != type)
|
|
continue;
|
|
|
|
if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
|
|
continue;
|
|
|
|
conn_num++;
|
|
|
|
list_for_each_entry_rcu(tmp, &conn->chan_list, list) {
|
|
struct sk_buff *skb;
|
|
|
|
if (skb_queue_empty(&tmp->data_q))
|
|
continue;
|
|
|
|
skb = skb_peek(&tmp->data_q);
|
|
if (skb->priority < cur_prio)
|
|
continue;
|
|
|
|
if (skb->priority > cur_prio) {
|
|
num = 0;
|
|
min = ~0;
|
|
cur_prio = skb->priority;
|
|
}
|
|
|
|
num++;
|
|
|
|
if (conn->sent < min) {
|
|
min = conn->sent;
|
|
chan = tmp;
|
|
}
|
|
}
|
|
|
|
if (hci_conn_num(hdev, type) == conn_num)
|
|
break;
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
if (!chan)
|
|
return NULL;
|
|
|
|
hci_quote_sent(chan->conn, num, quote);
|
|
|
|
BT_DBG("chan %p quote %d", chan, *quote);
|
|
return chan;
|
|
}
|
|
|
|
static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type)
|
|
{
|
|
struct hci_conn_hash *h = &hdev->conn_hash;
|
|
struct hci_conn *conn;
|
|
int num = 0;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(conn, &h->list, list) {
|
|
struct hci_chan *chan;
|
|
|
|
if (conn->type != type)
|
|
continue;
|
|
|
|
if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
|
|
continue;
|
|
|
|
num++;
|
|
|
|
list_for_each_entry_rcu(chan, &conn->chan_list, list) {
|
|
struct sk_buff *skb;
|
|
|
|
if (chan->sent) {
|
|
chan->sent = 0;
|
|
continue;
|
|
}
|
|
|
|
if (skb_queue_empty(&chan->data_q))
|
|
continue;
|
|
|
|
skb = skb_peek(&chan->data_q);
|
|
if (skb->priority >= HCI_PRIO_MAX - 1)
|
|
continue;
|
|
|
|
skb->priority = HCI_PRIO_MAX - 1;
|
|
|
|
BT_DBG("chan %p skb %p promoted to %d", chan, skb,
|
|
skb->priority);
|
|
}
|
|
|
|
if (hci_conn_num(hdev, type) == num)
|
|
break;
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
}
|
|
|
|
static void __check_timeout(struct hci_dev *hdev, unsigned int cnt, u8 type)
|
|
{
|
|
unsigned long last_tx;
|
|
|
|
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
|
|
return;
|
|
|
|
switch (type) {
|
|
case LE_LINK:
|
|
last_tx = hdev->le_last_tx;
|
|
break;
|
|
default:
|
|
last_tx = hdev->acl_last_tx;
|
|
break;
|
|
}
|
|
|
|
/* tx timeout must be longer than maximum link supervision timeout
|
|
* (40.9 seconds)
|
|
*/
|
|
if (!cnt && time_after(jiffies, last_tx + HCI_ACL_TX_TIMEOUT))
|
|
hci_link_tx_to(hdev, type);
|
|
}
|
|
|
|
/* Schedule SCO */
|
|
static void hci_sched_sco(struct hci_dev *hdev)
|
|
{
|
|
struct hci_conn *conn;
|
|
struct sk_buff *skb;
|
|
int quote;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (!hci_conn_num(hdev, SCO_LINK))
|
|
return;
|
|
|
|
while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) {
|
|
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
|
|
BT_DBG("skb %p len %d", skb, skb->len);
|
|
hci_send_frame(hdev, skb);
|
|
|
|
conn->sent++;
|
|
if (conn->sent == ~0)
|
|
conn->sent = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hci_sched_esco(struct hci_dev *hdev)
|
|
{
|
|
struct hci_conn *conn;
|
|
struct sk_buff *skb;
|
|
int quote;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (!hci_conn_num(hdev, ESCO_LINK))
|
|
return;
|
|
|
|
while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK,
|
|
"e))) {
|
|
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
|
|
BT_DBG("skb %p len %d", skb, skb->len);
|
|
hci_send_frame(hdev, skb);
|
|
|
|
conn->sent++;
|
|
if (conn->sent == ~0)
|
|
conn->sent = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hci_sched_acl_pkt(struct hci_dev *hdev)
|
|
{
|
|
unsigned int cnt = hdev->acl_cnt;
|
|
struct hci_chan *chan;
|
|
struct sk_buff *skb;
|
|
int quote;
|
|
|
|
__check_timeout(hdev, cnt, ACL_LINK);
|
|
|
|
while (hdev->acl_cnt &&
|
|
(chan = hci_chan_sent(hdev, ACL_LINK, "e))) {
|
|
u32 priority = (skb_peek(&chan->data_q))->priority;
|
|
while (quote-- && (skb = skb_peek(&chan->data_q))) {
|
|
BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
|
|
skb->len, skb->priority);
|
|
|
|
/* Stop if priority has changed */
|
|
if (skb->priority < priority)
|
|
break;
|
|
|
|
skb = skb_dequeue(&chan->data_q);
|
|
|
|
hci_conn_enter_active_mode(chan->conn,
|
|
bt_cb(skb)->force_active);
|
|
|
|
hci_send_frame(hdev, skb);
|
|
hdev->acl_last_tx = jiffies;
|
|
|
|
hdev->acl_cnt--;
|
|
chan->sent++;
|
|
chan->conn->sent++;
|
|
|
|
/* Send pending SCO packets right away */
|
|
hci_sched_sco(hdev);
|
|
hci_sched_esco(hdev);
|
|
}
|
|
}
|
|
|
|
if (cnt != hdev->acl_cnt)
|
|
hci_prio_recalculate(hdev, ACL_LINK);
|
|
}
|
|
|
|
static void hci_sched_acl(struct hci_dev *hdev)
|
|
{
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
/* No ACL link over BR/EDR controller */
|
|
if (!hci_conn_num(hdev, ACL_LINK))
|
|
return;
|
|
|
|
hci_sched_acl_pkt(hdev);
|
|
}
|
|
|
|
static void hci_sched_le(struct hci_dev *hdev)
|
|
{
|
|
struct hci_chan *chan;
|
|
struct sk_buff *skb;
|
|
int quote, *cnt, tmp;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (!hci_conn_num(hdev, LE_LINK))
|
|
return;
|
|
|
|
cnt = hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt;
|
|
|
|
__check_timeout(hdev, *cnt, LE_LINK);
|
|
|
|
tmp = *cnt;
|
|
while (*cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) {
|
|
u32 priority = (skb_peek(&chan->data_q))->priority;
|
|
while (quote-- && (skb = skb_peek(&chan->data_q))) {
|
|
BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
|
|
skb->len, skb->priority);
|
|
|
|
/* Stop if priority has changed */
|
|
if (skb->priority < priority)
|
|
break;
|
|
|
|
skb = skb_dequeue(&chan->data_q);
|
|
|
|
hci_send_frame(hdev, skb);
|
|
hdev->le_last_tx = jiffies;
|
|
|
|
(*cnt)--;
|
|
chan->sent++;
|
|
chan->conn->sent++;
|
|
|
|
/* Send pending SCO packets right away */
|
|
hci_sched_sco(hdev);
|
|
hci_sched_esco(hdev);
|
|
}
|
|
}
|
|
|
|
if (*cnt != tmp)
|
|
hci_prio_recalculate(hdev, LE_LINK);
|
|
}
|
|
|
|
/* Schedule CIS */
|
|
static void hci_sched_iso(struct hci_dev *hdev)
|
|
{
|
|
struct hci_conn *conn;
|
|
struct sk_buff *skb;
|
|
int quote, *cnt;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (!hci_conn_num(hdev, ISO_LINK))
|
|
return;
|
|
|
|
cnt = hdev->iso_pkts ? &hdev->iso_cnt :
|
|
hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt;
|
|
while (*cnt && (conn = hci_low_sent(hdev, ISO_LINK, "e))) {
|
|
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
|
|
BT_DBG("skb %p len %d", skb, skb->len);
|
|
hci_send_frame(hdev, skb);
|
|
|
|
conn->sent++;
|
|
if (conn->sent == ~0)
|
|
conn->sent = 0;
|
|
(*cnt)--;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hci_tx_work(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work);
|
|
struct sk_buff *skb;
|
|
|
|
BT_DBG("%s acl %d sco %d le %d iso %d", hdev->name, hdev->acl_cnt,
|
|
hdev->sco_cnt, hdev->le_cnt, hdev->iso_cnt);
|
|
|
|
if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
|
|
/* Schedule queues and send stuff to HCI driver */
|
|
hci_sched_sco(hdev);
|
|
hci_sched_esco(hdev);
|
|
hci_sched_iso(hdev);
|
|
hci_sched_acl(hdev);
|
|
hci_sched_le(hdev);
|
|
}
|
|
|
|
/* Send next queued raw (unknown type) packet */
|
|
while ((skb = skb_dequeue(&hdev->raw_q)))
|
|
hci_send_frame(hdev, skb);
|
|
}
|
|
|
|
/* ----- HCI RX task (incoming data processing) ----- */
|
|
|
|
/* ACL data packet */
|
|
static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct hci_acl_hdr *hdr = (void *) skb->data;
|
|
struct hci_conn *conn;
|
|
__u16 handle, flags;
|
|
|
|
skb_pull(skb, HCI_ACL_HDR_SIZE);
|
|
|
|
handle = __le16_to_cpu(hdr->handle);
|
|
flags = hci_flags(handle);
|
|
handle = hci_handle(handle);
|
|
|
|
BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len,
|
|
handle, flags);
|
|
|
|
hdev->stat.acl_rx++;
|
|
|
|
hci_dev_lock(hdev);
|
|
conn = hci_conn_hash_lookup_handle(hdev, handle);
|
|
if (conn && hci_dev_test_flag(hdev, HCI_MGMT))
|
|
mgmt_device_connected(hdev, conn, NULL, 0);
|
|
hci_dev_unlock(hdev);
|
|
|
|
if (conn) {
|
|
hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF);
|
|
|
|
/* Send to upper protocol */
|
|
l2cap_recv_acldata(conn, skb, flags);
|
|
return;
|
|
} else {
|
|
bt_dev_err(hdev, "ACL packet for unknown connection handle %d",
|
|
handle);
|
|
}
|
|
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
/* SCO data packet */
|
|
static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct hci_sco_hdr *hdr = (void *) skb->data;
|
|
struct hci_conn *conn;
|
|
__u16 handle, flags;
|
|
|
|
skb_pull(skb, HCI_SCO_HDR_SIZE);
|
|
|
|
handle = __le16_to_cpu(hdr->handle);
|
|
flags = hci_flags(handle);
|
|
handle = hci_handle(handle);
|
|
|
|
BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len,
|
|
handle, flags);
|
|
|
|
hdev->stat.sco_rx++;
|
|
|
|
hci_dev_lock(hdev);
|
|
conn = hci_conn_hash_lookup_handle(hdev, handle);
|
|
hci_dev_unlock(hdev);
|
|
|
|
if (conn) {
|
|
/* Send to upper protocol */
|
|
hci_skb_pkt_status(skb) = flags & 0x03;
|
|
sco_recv_scodata(conn, skb);
|
|
return;
|
|
} else {
|
|
bt_dev_err_ratelimited(hdev, "SCO packet for unknown connection handle %d",
|
|
handle);
|
|
}
|
|
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
static void hci_isodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct hci_iso_hdr *hdr;
|
|
struct hci_conn *conn;
|
|
__u16 handle, flags;
|
|
|
|
hdr = skb_pull_data(skb, sizeof(*hdr));
|
|
if (!hdr) {
|
|
bt_dev_err(hdev, "ISO packet too small");
|
|
goto drop;
|
|
}
|
|
|
|
handle = __le16_to_cpu(hdr->handle);
|
|
flags = hci_flags(handle);
|
|
handle = hci_handle(handle);
|
|
|
|
bt_dev_dbg(hdev, "len %d handle 0x%4.4x flags 0x%4.4x", skb->len,
|
|
handle, flags);
|
|
|
|
hci_dev_lock(hdev);
|
|
conn = hci_conn_hash_lookup_handle(hdev, handle);
|
|
hci_dev_unlock(hdev);
|
|
|
|
if (!conn) {
|
|
bt_dev_err(hdev, "ISO packet for unknown connection handle %d",
|
|
handle);
|
|
goto drop;
|
|
}
|
|
|
|
/* Send to upper protocol */
|
|
iso_recv(conn, skb, flags);
|
|
return;
|
|
|
|
drop:
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
static bool hci_req_is_complete(struct hci_dev *hdev)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
skb = skb_peek(&hdev->cmd_q);
|
|
if (!skb)
|
|
return true;
|
|
|
|
return (bt_cb(skb)->hci.req_flags & HCI_REQ_START);
|
|
}
|
|
|
|
static void hci_resend_last(struct hci_dev *hdev)
|
|
{
|
|
struct hci_command_hdr *sent;
|
|
struct sk_buff *skb;
|
|
u16 opcode;
|
|
|
|
if (!hdev->sent_cmd)
|
|
return;
|
|
|
|
sent = (void *) hdev->sent_cmd->data;
|
|
opcode = __le16_to_cpu(sent->opcode);
|
|
if (opcode == HCI_OP_RESET)
|
|
return;
|
|
|
|
skb = skb_clone(hdev->sent_cmd, GFP_KERNEL);
|
|
if (!skb)
|
|
return;
|
|
|
|
skb_queue_head(&hdev->cmd_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->cmd_work);
|
|
}
|
|
|
|
void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status,
|
|
hci_req_complete_t *req_complete,
|
|
hci_req_complete_skb_t *req_complete_skb)
|
|
{
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
|
|
BT_DBG("opcode 0x%04x status 0x%02x", opcode, status);
|
|
|
|
/* If the completed command doesn't match the last one that was
|
|
* sent we need to do special handling of it.
|
|
*/
|
|
if (!hci_sent_cmd_data(hdev, opcode)) {
|
|
/* Some CSR based controllers generate a spontaneous
|
|
* reset complete event during init and any pending
|
|
* command will never be completed. In such a case we
|
|
* need to resend whatever was the last sent
|
|
* command.
|
|
*/
|
|
if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET)
|
|
hci_resend_last(hdev);
|
|
|
|
return;
|
|
}
|
|
|
|
/* If we reach this point this event matches the last command sent */
|
|
hci_dev_clear_flag(hdev, HCI_CMD_PENDING);
|
|
|
|
/* If the command succeeded and there's still more commands in
|
|
* this request the request is not yet complete.
|
|
*/
|
|
if (!status && !hci_req_is_complete(hdev))
|
|
return;
|
|
|
|
skb = hdev->req_skb;
|
|
|
|
/* If this was the last command in a request the complete
|
|
* callback would be found in hdev->req_skb instead of the
|
|
* command queue (hdev->cmd_q).
|
|
*/
|
|
if (skb && bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) {
|
|
*req_complete_skb = bt_cb(skb)->hci.req_complete_skb;
|
|
return;
|
|
}
|
|
|
|
if (skb && bt_cb(skb)->hci.req_complete) {
|
|
*req_complete = bt_cb(skb)->hci.req_complete;
|
|
return;
|
|
}
|
|
|
|
/* Remove all pending commands belonging to this request */
|
|
spin_lock_irqsave(&hdev->cmd_q.lock, flags);
|
|
while ((skb = __skb_dequeue(&hdev->cmd_q))) {
|
|
if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) {
|
|
__skb_queue_head(&hdev->cmd_q, skb);
|
|
break;
|
|
}
|
|
|
|
if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB)
|
|
*req_complete_skb = bt_cb(skb)->hci.req_complete_skb;
|
|
else
|
|
*req_complete = bt_cb(skb)->hci.req_complete;
|
|
dev_kfree_skb_irq(skb);
|
|
}
|
|
spin_unlock_irqrestore(&hdev->cmd_q.lock, flags);
|
|
}
|
|
|
|
static void hci_rx_work(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work);
|
|
struct sk_buff *skb;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
/* The kcov_remote functions used for collecting packet parsing
|
|
* coverage information from this background thread and associate
|
|
* the coverage with the syscall's thread which originally injected
|
|
* the packet. This helps fuzzing the kernel.
|
|
*/
|
|
for (; (skb = skb_dequeue(&hdev->rx_q)); kcov_remote_stop()) {
|
|
kcov_remote_start_common(skb_get_kcov_handle(skb));
|
|
|
|
/* Send copy to monitor */
|
|
hci_send_to_monitor(hdev, skb);
|
|
|
|
if (atomic_read(&hdev->promisc)) {
|
|
/* Send copy to the sockets */
|
|
hci_send_to_sock(hdev, skb);
|
|
}
|
|
|
|
/* If the device has been opened in HCI_USER_CHANNEL,
|
|
* the userspace has exclusive access to device.
|
|
* When device is HCI_INIT, we still need to process
|
|
* the data packets to the driver in order
|
|
* to complete its setup().
|
|
*/
|
|
if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
|
|
!test_bit(HCI_INIT, &hdev->flags)) {
|
|
kfree_skb(skb);
|
|
continue;
|
|
}
|
|
|
|
if (test_bit(HCI_INIT, &hdev->flags)) {
|
|
/* Don't process data packets in this states. */
|
|
switch (hci_skb_pkt_type(skb)) {
|
|
case HCI_ACLDATA_PKT:
|
|
case HCI_SCODATA_PKT:
|
|
case HCI_ISODATA_PKT:
|
|
kfree_skb(skb);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* Process frame */
|
|
switch (hci_skb_pkt_type(skb)) {
|
|
case HCI_EVENT_PKT:
|
|
BT_DBG("%s Event packet", hdev->name);
|
|
hci_event_packet(hdev, skb);
|
|
break;
|
|
|
|
case HCI_ACLDATA_PKT:
|
|
BT_DBG("%s ACL data packet", hdev->name);
|
|
hci_acldata_packet(hdev, skb);
|
|
break;
|
|
|
|
case HCI_SCODATA_PKT:
|
|
BT_DBG("%s SCO data packet", hdev->name);
|
|
hci_scodata_packet(hdev, skb);
|
|
break;
|
|
|
|
case HCI_ISODATA_PKT:
|
|
BT_DBG("%s ISO data packet", hdev->name);
|
|
hci_isodata_packet(hdev, skb);
|
|
break;
|
|
|
|
default:
|
|
kfree_skb(skb);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hci_send_cmd_sync(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
int err;
|
|
|
|
bt_dev_dbg(hdev, "skb %p", skb);
|
|
|
|
kfree_skb(hdev->sent_cmd);
|
|
|
|
hdev->sent_cmd = skb_clone(skb, GFP_KERNEL);
|
|
if (!hdev->sent_cmd) {
|
|
skb_queue_head(&hdev->cmd_q, skb);
|
|
queue_work(hdev->workqueue, &hdev->cmd_work);
|
|
return;
|
|
}
|
|
|
|
err = hci_send_frame(hdev, skb);
|
|
if (err < 0) {
|
|
hci_cmd_sync_cancel_sync(hdev, -err);
|
|
return;
|
|
}
|
|
|
|
if (hdev->req_status == HCI_REQ_PEND &&
|
|
!hci_dev_test_and_set_flag(hdev, HCI_CMD_PENDING)) {
|
|
kfree_skb(hdev->req_skb);
|
|
hdev->req_skb = skb_clone(hdev->sent_cmd, GFP_KERNEL);
|
|
}
|
|
|
|
atomic_dec(&hdev->cmd_cnt);
|
|
}
|
|
|
|
static void hci_cmd_work(struct work_struct *work)
|
|
{
|
|
struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work);
|
|
struct sk_buff *skb;
|
|
|
|
BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name,
|
|
atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q));
|
|
|
|
/* Send queued commands */
|
|
if (atomic_read(&hdev->cmd_cnt)) {
|
|
skb = skb_dequeue(&hdev->cmd_q);
|
|
if (!skb)
|
|
return;
|
|
|
|
hci_send_cmd_sync(hdev, skb);
|
|
|
|
rcu_read_lock();
|
|
if (test_bit(HCI_RESET, &hdev->flags) ||
|
|
hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
|
|
cancel_delayed_work(&hdev->cmd_timer);
|
|
else
|
|
queue_delayed_work(hdev->workqueue, &hdev->cmd_timer,
|
|
HCI_CMD_TIMEOUT);
|
|
rcu_read_unlock();
|
|
}
|
|
}
|