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authorAndre Guedes <andre.guedes@openbossa.org>2014-02-26 20:21:49 -0300
committerMarcel Holtmann <marcel@holtmann.org>2014-02-26 19:41:34 -0800
commitcef952ce760a1113207b277af65a6ea2644a1b4a (patch)
treedaa8da90f452259227bd5dd687d17507db21fa36 /net
parent9fcb18ef3acb51e54b6bca6d2d803676ac86813d (diff)
Bluetooth: Connection parameters and auto connection
This patch modifies hci_conn_params_add() and hci_conn_params_del() so they also add/delete pending LE connections according to the auto_ connect option. This way, background scan is automatically triggered/ untriggered when connection parameters are added/removed. For instance, when a new connection parameters with HCI_AUTO_CONN_ALWAYS option is added and we are not connected to the device, we add a pending LE connection for that device. Likewise, when the connection parameters are updated we add or delete a pending LE connection according to its new auto_connect option. Finally, when the connection parameter is deleted we also delete the pending LE connection (if any). Signed-off-by: Andre Guedes <andre.guedes@openbossa.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/hci_core.c42
1 files changed, 35 insertions, 7 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index f4224dc58e4d..89ff09249eee 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3200,6 +3200,23 @@ struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
return NULL;
}
+static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
+{
+ struct hci_conn *conn;
+
+ conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
+ if (!conn)
+ return false;
+
+ if (conn->dst_type != type)
+ return false;
+
+ if (conn->state != BT_CONNECTED)
+ return false;
+
+ return true;
+}
+
/* This function requires the caller holds hdev->lock */
void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
u8 auto_connect, u16 conn_min_interval,
@@ -3208,12 +3225,8 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
struct hci_conn_params *params;
params = hci_conn_params_lookup(hdev, addr, addr_type);
- if (params) {
- params->conn_min_interval = conn_min_interval;
- params->conn_max_interval = conn_max_interval;
- params->auto_connect = auto_connect;
- return;
- }
+ if (params)
+ goto update;
params = kzalloc(sizeof(*params), GFP_KERNEL);
if (!params) {
@@ -3223,11 +3236,24 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
bacpy(&params->addr, addr);
params->addr_type = addr_type;
+
+ list_add(&params->list, &hdev->le_conn_params);
+
+update:
params->conn_min_interval = conn_min_interval;
params->conn_max_interval = conn_max_interval;
params->auto_connect = auto_connect;
- list_add(&params->list, &hdev->le_conn_params);
+ switch (auto_connect) {
+ case HCI_AUTO_CONN_DISABLED:
+ case HCI_AUTO_CONN_LINK_LOSS:
+ hci_pend_le_conn_del(hdev, addr, addr_type);
+ break;
+ case HCI_AUTO_CONN_ALWAYS:
+ if (!is_connected(hdev, addr, addr_type))
+ hci_pend_le_conn_add(hdev, addr, addr_type);
+ break;
+ }
BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x "
"conn_max_interval 0x%.4x", addr, addr_type, auto_connect,
@@ -3243,6 +3269,8 @@ void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
if (!params)
return;
+ hci_pend_le_conn_del(hdev, addr, addr_type);
+
list_del(&params->list);
kfree(params);