diff options
author | Johan Hedberg <johan.hedberg@nokia.com> | 2011-01-17 12:41:05 (GMT) |
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committer | Gustavo F. Padovan <padovan@profusion.mobi> | 2011-02-08 03:40:07 (GMT) |
commit | 55ed8ca10f3530de8edbbf138acb50992bf5005b (patch) | |
tree | 3145b2b995758b2cb64493fc8ec29e63d0e9f0b4 /net/bluetooth/hci_core.c | |
parent | 1aff6f09491f454d4cd9f405c783fa5e9d3168a0 (diff) | |
download | linux-fsl-qoriq-55ed8ca10f3530de8edbbf138acb50992bf5005b.tar.xz |
Bluetooth: Implement link key handling for the management interface
This patch adds a management commands to feed the kernel with all stored
link keys as well as remove specific ones or all of them. Once the
load_keys command has been called the kernel takes over link key
replies. A new_key event is also added to inform userspace of newly
created link keys that should be stored permanently.
Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth/hci_core.c')
-rw-r--r-- | net/bluetooth/hci_core.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 748f5a6..8ca8cf1 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -970,6 +970,88 @@ int hci_uuids_clear(struct hci_dev *hdev) return 0; } +int hci_link_keys_clear(struct hci_dev *hdev) +{ + struct list_head *p, *n; + + list_for_each_safe(p, n, &hdev->link_keys) { + struct link_key *key; + + key = list_entry(p, struct link_key, list); + + list_del(p); + kfree(key); + } + + return 0; +} + +struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) +{ + struct list_head *p; + + list_for_each(p, &hdev->link_keys) { + struct link_key *k; + + k = list_entry(p, struct link_key, list); + + if (bacmp(bdaddr, &k->bdaddr) == 0) + return k; + } + + return NULL; +} + +int hci_add_link_key(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr, + u8 *val, u8 type, u8 pin_len) +{ + 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 = 0xff; + key = kzalloc(sizeof(*key), GFP_ATOMIC); + if (!key) + return -ENOMEM; + list_add(&key->list, &hdev->link_keys); + } + + BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); + + bacpy(&key->bdaddr, bdaddr); + memcpy(key->val, val, 16); + key->type = type; + key->pin_len = pin_len; + + if (new_key) + mgmt_new_key(hdev->id, key, old_key_type); + + if (type == 0x06) + key->type = old_key_type; + + return 0; +} + +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 %s", hdev->name, batostr(bdaddr)); + + list_del(&key->list); + kfree(key); + + return 0; +} + /* Register HCI device */ int hci_register_dev(struct hci_dev *hdev) { @@ -1029,6 +1111,8 @@ int hci_register_dev(struct hci_dev *hdev) INIT_LIST_HEAD(&hdev->uuids); + INIT_LIST_HEAD(&hdev->link_keys); + INIT_WORK(&hdev->power_on, hci_power_on); INIT_WORK(&hdev->power_off, hci_power_off); setup_timer(&hdev->off_timer, hci_auto_off, (unsigned long) hdev); @@ -1105,6 +1189,7 @@ int hci_unregister_dev(struct hci_dev *hdev) hci_dev_lock_bh(hdev); hci_blacklist_clear(hdev); hci_uuids_clear(hdev); + hci_link_keys_clear(hdev); hci_dev_unlock_bh(hdev); __hci_dev_put(hdev); |