Bluetooth: Add set_io_capability management command
This patch adds a new set_io_capability management command which is used
to set the IO capability for Secure Simple Pairing (SSP) as well as the
Security Manager Protocol (SMP). The value is per hci_dev and each
hci_conn object inherits it upon creation.
Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 98bcf78..617f583 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2198,6 +2198,25 @@
hci_dev_unlock(hdev);
}
+static inline u8 hci_get_auth_req(struct hci_conn *conn)
+{
+ /* If remote requests dedicated bonding follow that lead */
+ if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) {
+ /* If both remote and local IO capabilities allow MITM
+ * protection then require it, otherwise don't */
+ if (conn->remote_cap == 0x03 || conn->io_capability == 0x03)
+ return 0x02;
+ else
+ return 0x03;
+ }
+
+ /* If remote requests no-bonding follow that lead */
+ if (conn->remote_auth == 0x00 || conn->remote_auth == 0x01)
+ return 0x00;
+
+ return conn->auth_type;
+}
+
static inline void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_io_capa_request *ev = (void *) skb->data;
@@ -2218,8 +2237,15 @@
if (test_bit(HCI_PAIRABLE, &hdev->flags) ||
(conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
- /* FIXME: Do IO capa response based on information
- * provided through the management interface */
+ struct hci_cp_io_capability_reply cp;
+
+ bacpy(&cp.bdaddr, &ev->bdaddr);
+ cp.capability = conn->io_capability;
+ cp.oob_data = 0;
+ cp.authentication = hci_get_auth_req(conn);
+
+ hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
+ sizeof(cp), &cp);
} else {
struct hci_cp_io_capability_neg_reply cp;