Bluetooth: Add smp_sufficient_security helper function

This function is needed both by the smp_conn_security function as well
as upcoming code to check for the security requirements when receiving
an L2CAP connect request over LE.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index e61e74a..4500736 100644 (file)
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -750,6 +750,17 @@ static u8 smp_cmd_security_req(struct l2cap_conn *conn, struct sk_buff *skb)
        return 0;
 }
 
+bool smp_sufficient_security(struct hci_conn *hcon, u8 sec_level)
+{
+       if (sec_level == BT_SECURITY_LOW)
+               return true;
+
+       if (hcon->sec_level >= sec_level)
+               return true;
+
+       return false;
+}
+
 int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
 {
        struct l2cap_conn *conn = hcon->l2cap_data;
@@ -761,10 +772,7 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
        if (!test_bit(HCI_LE_ENABLED, &hcon->hdev->dev_flags))
                return 1;
 
-       if (sec_level == BT_SECURITY_LOW)
-               return 1;
-
-       if (hcon->sec_level >= sec_level)
+       if (smp_sufficient_security(hcon, sec_level))
                return 1;
 
        if (hcon->link_mode & HCI_LM_MASTER)

diff --git a/net/bluetooth/smp.h b/net/bluetooth/smp.h
index f8ba07f..a700bcb 100644 (file)
--- a/net/bluetooth/smp.h
+++ b/net/bluetooth/smp.h
@@ -136,6 +136,7 @@ struct smp_chan {
 };
 
 /* SMP Commands */
+bool smp_sufficient_security(struct hci_conn *hcon, u8 sec_level);
 int smp_conn_security(struct hci_conn *hcon, __u8 sec_level);
 int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
 int smp_distribute_keys(struct l2cap_conn *conn, __u8 force);