Bluetooth: Create a unified authentication request function

This patch adds a single function that's responsible for requesting
authentication for outgoing connections. This is preparation for the
next patch which will add automated name requests and thereby move the
authentication requests to a different location.

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 84302768939ae20ad7b0145e49a1e139a407c701..9c6d9bc1d8afeff0736ffe0551165b2e2c742d3b 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -677,6 +677,29 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
        hci_dev_unlock(hdev);
 }
 
+static int hci_request_outgoing_auth(struct hci_dev *hdev,
+                                               struct hci_conn *conn)
+{
+       struct hci_cp_auth_requested cp;
+
+       if (conn->state != BT_CONFIG || !conn->out)
+               return 0;
+
+       if (conn->sec_level == BT_SECURITY_SDP)
+               return 0;
+
+       /* Only request authentication for SSP connections or non-SSP
+        * devices with sec_level HIGH */
+       if (!(hdev->ssp_mode > 0 && conn->ssp_mode > 0) &&
+                                       conn->sec_level != BT_SECURITY_HIGH)
+               return 0;
+
+       cp.handle = __cpu_to_le16(conn->handle);
+       hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
+
+       return 1;
+}
+
 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
 {
        BT_DBG("%s status 0x%x", hdev->name, status);
@@ -1156,6 +1179,7 @@ static inline void hci_remote_features_evt(struct hci_dev *hdev, struct sk_buff
 {
        struct hci_ev_remote_features *ev = (void *) skb->data;
        struct hci_conn *conn;
+       int auth_requested;
 
        BT_DBG("%s status %d", hdev->name, ev->status);
 
@@ -1177,12 +1201,15 @@ static inline void hci_remote_features_evt(struct hci_dev *hdev, struct sk_buff
                cp.page = 0x01;
                hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
                                                        sizeof(cp), &cp);
-       } else if (!ev->status && conn->out &&
-                       conn->sec_level == BT_SECURITY_HIGH) {
-               struct hci_cp_auth_requested cp;
-               cp.handle = ev->handle;
-               hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
-       } else {
+               goto unlock;
+       }
+
+       if (!ev->status)
+               auth_requested = hci_request_outgoing_auth(hdev, conn);
+       else
+               auth_requested = 0;
+
+       if (!auth_requested) {
                conn->state = BT_CONNECTED;
                hci_proto_connect_cfm(conn, ev->status);
                hci_conn_put(conn);
@@ -1640,6 +1667,7 @@ static inline void hci_remote_ext_features_evt(struct hci_dev *hdev, struct sk_b
 {
        struct hci_ev_remote_ext_features *ev = (void *) skb->data;
        struct hci_conn *conn;
+       int auth_requested;
 
        BT_DBG("%s", hdev->name);
 
@@ -1661,14 +1689,12 @@ static inline void hci_remote_ext_features_evt(struct hci_dev *hdev, struct sk_b
        if (conn->state != BT_CONFIG)
                goto unlock;
 
-       if (!ev->status && hdev->ssp_mode > 0 &&
-                       conn->ssp_mode > 0 && conn->out &&
-                       conn->sec_level != BT_SECURITY_SDP) {
-               struct hci_cp_auth_requested cp;
-               cp.handle = ev->handle;
-               hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
-                               sizeof(cp), &cp);
-       } else {
+       if (!ev->status)
+               auth_requested = hci_request_outgoing_auth(hdev, conn);
+       else
+               auth_requested = 0;
+
+       if (!auth_requested) {
                conn->state = BT_CONNECTED;
                hci_proto_connect_cfm(conn, ev->status);
                hci_conn_put(conn);