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Bluetooth: Implementation of MGMT_OP_SET_BLOCKED_KEYS.

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MGMT command is added to receive the list of blocked keys from
user-space.

The list is used to:
1) Block keys from being distributed by the device during
   the ke distribution phase of SMP.
2) Filter out any keys that were previously saved so
   they are no longer used.

Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alain Michaud 2020-01-07 00:43:17 +00:00 • committed by Marcel Holtmann
parent 5e6d8401ad
commit 600a87490f
6 changed files with 215 additions and 8 deletions
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17
net/bluetooth/hci_debugfs.c
View file

@ -152,6 +152,21 @@ static int blacklist_show(struct seq_file *f, void *p)
DEFINE_SHOW_ATTRIBUTE(blacklist);
static int blocked_keys_show(struct seq_file *f, void *p)
{
struct hci_dev *hdev = f->private;
struct blocked_key *key;
rcu_read_lock();
list_for_each_entry_rcu(key, &hdev->blocked_keys, list)
seq_printf(f, "%u %*phN\n", key->type, 16, key->val);
rcu_read_unlock();
return 0;
}
DEFINE_SHOW_ATTRIBUTE(blocked_keys);
static int uuids_show(struct seq_file *f, void *p)
{
struct hci_dev *hdev = f->private;
@ -308,6 +323,8 @@ void hci_debugfs_create_common(struct hci_dev *hdev)
&device_list_fops);
debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
&blacklist_fops);
debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
&blocked_keys_fops);
debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
&remote_oob_fops);