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Bluetooth: mgmt: Implement support for passkey notification 

This patch adds support for Secure Simple Pairing with devices that have
KeyboardOnly as their IO capability. Such devices will cause a passkey
notification on our side and optionally also keypress notifications.
Without this patch some keyboards cannot be paired using the mgmt
interface.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Cc: stable@vger.kernel.org
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Johan Hedberg 2012-09-06 18:39:26 +03:00 committed by Gustavo Padovan
parent 5ad7779586
commit 92a25256f1
5 changed files with 114 additions and 0 deletions
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18
include/net/bluetooth/hci.h
View File

@ -1249,6 +1249,24 @@ struct hci_ev_simple_pair_complete {
bdaddr_t bdaddr;
} __packed;
#define HCI_EV_USER_PASSKEY_NOTIFY 0x3b
struct hci_ev_user_passkey_notify {
bdaddr_t bdaddr;
__le32 passkey;
} __packed;
#define HCI_KEYPRESS_STARTED 0
#define HCI_KEYPRESS_ENTERED 1
#define HCI_KEYPRESS_ERASED 2
#define HCI_KEYPRESS_CLEARED 3
#define HCI_KEYPRESS_COMPLETED 4
#define HCI_EV_KEYPRESS_NOTIFY 0x3c
struct hci_ev_keypress_notify {
bdaddr_t bdaddr;
__u8 type;
} __packed;
#define HCI_EV_REMOTE_HOST_FEATURES 0x3d
struct hci_ev_remote_host_features {
bdaddr_t bdaddr;

5
include/net/bluetooth/hci_core.h
View File

@ -303,6 +303,8 @@ struct hci_conn {
__u8 pin_length;
__u8 enc_key_size;
__u8 io_capability;
__u32 passkey_notify;
__u8 passkey_entered;
__u16 disc_timeout;
unsigned long flags;
@ -1022,6 +1024,9 @@ int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 link_type, u8 addr_type, u8 status);
int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 link_type, u8 addr_type, u8 status);
int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 link_type, u8 addr_type, u32 passkey,
u8 entered);
int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
u8 addr_type, u8 status);
int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);

7
include/net/bluetooth/mgmt.h
View File

@ -478,3 +478,10 @@ struct mgmt_ev_device_unblocked {
struct mgmt_ev_device_unpaired {
struct mgmt_addr_info addr;
} __packed;
#define MGMT_EV_PASSKEY_NOTIFY 0x0017
struct mgmt_ev_passkey_notify {
struct mgmt_addr_info addr;
__le32 passkey;
__u8 entered;
} __packed;

67
net/bluetooth/hci_event.c
View File

@ -3263,6 +3263,65 @@ static void hci_user_passkey_request_evt(struct hci_dev *hdev,
mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
}
static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
struct sk_buff *skb)
{
struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
struct hci_conn *conn;
BT_DBG("%s", hdev->name);
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
if (!conn)
return;
conn->passkey_notify = __le32_to_cpu(ev->passkey);
conn->passkey_entered = 0;
if (test_bit(HCI_MGMT, &hdev->dev_flags))
mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
conn->dst_type, conn->passkey_notify,
conn->passkey_entered);
}
static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_keypress_notify *ev = (void *) skb->data;
struct hci_conn *conn;
BT_DBG("%s", hdev->name);
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
if (!conn)
return;
switch (ev->type) {
case HCI_KEYPRESS_STARTED:
conn->passkey_entered = 0;
return;
case HCI_KEYPRESS_ENTERED:
conn->passkey_entered++;
break;
case HCI_KEYPRESS_ERASED:
conn->passkey_entered--;
break;
case HCI_KEYPRESS_CLEARED:
conn->passkey_entered = 0;
break;
case HCI_KEYPRESS_COMPLETED:
return;
}
if (test_bit(HCI_MGMT, &hdev->dev_flags))
mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
conn->dst_type, conn->passkey_notify,
conn->passkey_entered);
}
static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
struct sk_buff *skb)
{
@ -3627,6 +3686,14 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
hci_user_passkey_request_evt(hdev, skb);
break;
case HCI_EV_USER_PASSKEY_NOTIFY:
hci_user_passkey_notify_evt(hdev, skb);
break;
case HCI_EV_KEYPRESS_NOTIFY:
hci_keypress_notify_evt(hdev, skb);
break;
case HCI_EV_SIMPLE_PAIR_COMPLETE:
hci_simple_pair_complete_evt(hdev, skb);
break;

17
net/bluetooth/mgmt.c
View File

@ -99,6 +99,7 @@ static const u16 mgmt_events[] = {
MGMT_EV_DEVICE_BLOCKED,
MGMT_EV_DEVICE_UNBLOCKED,
MGMT_EV_DEVICE_UNPAIRED,
MGMT_EV_PASSKEY_NOTIFY,
};
/*
@ -3276,6 +3277,22 @@ int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
MGMT_OP_USER_PASSKEY_NEG_REPLY);
}
int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 link_type, u8 addr_type, u32 passkey,
u8 entered)
{
struct mgmt_ev_passkey_notify ev;
BT_DBG("%s", hdev->name);
bacpy(&ev.addr.bdaddr, bdaddr);
ev.addr.type = link_to_bdaddr(link_type, addr_type);
ev.passkey = __cpu_to_le32(passkey);
ev.entered = entered;
return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
}
int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
u8 addr_type, u8 status)
{