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Bluetooth: Add definitions for new link key types 

With the introduction of Secure Connections, the list of link key types
got extended by P-256 versions of authenticated and unauthenticated
link keys.

To avoid any confusion the previous authenticated and unauthenticated
link key types got ammended with a P912 postfix. And the two new keys
have a P256 postfix now. Existing code using the previous definitions
has been adjusted.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-01-10 02:07:19 -08:00 committed by Johan Hedberg
parent e2f9913157
commit 11015c7903
3 changed files with 7 additions and 5 deletions
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6
include/net/bluetooth/hci.h
View File

@ -331,9 +331,11 @@ enum {
#define HCI_LK_LOCAL_UNIT 0x01
#define HCI_LK_REMOTE_UNIT 0x02
#define HCI_LK_DEBUG_COMBINATION 0x03
#define HCI_LK_UNAUTH_COMBINATION 0x04
#define HCI_LK_AUTH_COMBINATION 0x05
#define HCI_LK_UNAUTH_COMBINATION_P192 0x04
#define HCI_LK_AUTH_COMBINATION_P192 0x05
#define HCI_LK_CHANGED_COMBINATION 0x06
#define HCI_LK_UNAUTH_COMBINATION_P256 0x07
#define HCI_LK_AUTH_COMBINATION_P256 0x08
/* The spec doesn't define types for SMP keys, the _MASTER suffix is implied */
#define HCI_SMP_STK 0x80
#define HCI_SMP_STK_SLAVE 0x81

4
net/bluetooth/hci_conn.c
View File

@ -802,12 +802,12 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
/* An authenticated combination key has sufficient security for any
security level. */
if (conn->key_type == HCI_LK_AUTH_COMBINATION)
if (conn->key_type == HCI_LK_AUTH_COMBINATION_P192)
goto encrypt;
/* An unauthenticated combination key has sufficient security for
security level 1 and 2. */
if (conn->key_type == HCI_LK_UNAUTH_COMBINATION &&
if (conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 &&
(sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW))
goto encrypt;

2
net/bluetooth/hci_event.c
View File

@ -2633,7 +2633,7 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
if (conn) {
if (key->type == HCI_LK_UNAUTH_COMBINATION &&
if (key->type == HCI_LK_UNAUTH_COMBINATION_P192 &&
conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
BT_DBG("%s ignoring unauthenticated key", hdev->name);
goto not_found;