Bluetooth: Add enable_le module parameter
Andre Guedes [Thu, 30 Jun 2011 22:20:54 +0000 (19:20 -0300)]
This patch adds a new module parameter to enable/disable host LE
support. By default host LE support is disabled.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

include/net/bluetooth/hci.h
net/bluetooth/hci_event.c

index ed1de1b..5f37822 100644 (file)
@@ -211,6 +211,7 @@ enum {
 #define LMP_EDR_3S_ESCO        0x80
 
 #define LMP_EXT_INQ    0x01
+#define LMP_SIMUL_LE_BR        0x02
 #define LMP_SIMPLE_PAIR        0x08
 #define LMP_NO_FLUSH   0x40
 
index 4ed59a8..298cd9b 100644 (file)
@@ -45,6 +45,8 @@
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 
+static int enable_le;
+
 /* Handle HCI Event packets */
 
 static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
@@ -525,6 +527,20 @@ static void hci_setup_event_mask(struct hci_dev *hdev)
        hci_send_cmd(hdev, HCI_OP_SET_EVENT_MASK, sizeof(events), events);
 }
 
+static void hci_set_le_support(struct hci_dev *hdev)
+{
+       struct hci_cp_write_le_host_supported cp;
+
+       memset(&cp, 0, sizeof(cp));
+
+       if (enable_le) {
+               cp.le = 1;
+               cp.simul = !!(hdev->features[6] & LMP_SIMUL_LE_BR);
+       }
+
+       hci_send_cmd(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), &cp);
+}
+
 static void hci_setup(struct hci_dev *hdev)
 {
        hci_setup_event_mask(hdev);
@@ -550,6 +566,9 @@ static void hci_setup(struct hci_dev *hdev)
                hci_send_cmd(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES,
                                                        sizeof(cp), &cp);
        }
+
+       if (hdev->features[4] & LMP_LE)
+               hci_set_le_support(hdev);
 }
 
 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
@@ -3068,3 +3087,6 @@ void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data)
        hci_send_to_sock(hdev, skb, NULL);
        kfree_skb(skb);
 }
+
+module_param(enable_le, bool, 0444);
+MODULE_PARM_DESC(enable_le, "Enable LE support");