[PATCH 2/2] Bluetooth: Track LE connection parameter update event
From: Marcel Holtmann <marcel@holtmann.org>
Date: 2014-06-23 09:40:05
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
When the LE controller changes its connection parameters, it will send a connection parameter update event. Make sure that the new set of parameters are stored in hci_conn struct and thus will properly update the previous values retrieved from the connection complete event. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> --- include/net/bluetooth/hci.h | 9 +++++++++ net/bluetooth/hci_event.c | 27 +++++++++++++++++++++++++++ 2 files changed, 36 insertions(+)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 3f3a3f1399fb..6b8371d73d3d 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h@@ -1666,6 +1666,15 @@ struct hci_ev_le_conn_complete { __u8 clk_accurancy; } __packed; +#define HCI_EV_LE_CONN_UPDATE_COMPLETE 0x03 +struct hci_ev_le_conn_update_complete { + __u8 status; + __le16 handle; + __le16 interval; + __le16 latency; + __le16 supervision_timeout; +} __packed; + #define HCI_EV_LE_LTK_REQ 0x05 struct hci_ev_le_ltk_req { __le16 handle;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3d4741d789d3..e239435312dc 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c@@ -4070,6 +4070,29 @@ unlock: hci_dev_unlock(hdev); } +static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, + struct sk_buff *skb) +{ + struct hci_ev_le_conn_update_complete *ev = (void *) skb->data; + struct hci_conn *conn; + + BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); + + if (ev->status) + return; + + hci_dev_lock(hdev); + + conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); + if (conn) { + conn->le_conn_interval = le16_to_cpu(ev->interval); + conn->le_conn_latency = le16_to_cpu(ev->latency); + conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); + } + + hci_dev_unlock(hdev); +} + /* This function requires the caller holds hdev->lock */ static void check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
@@ -4269,6 +4292,10 @@ static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_le_conn_complete_evt(hdev, skb); break; + case HCI_EV_LE_CONN_UPDATE_COMPLETE: + hci_le_conn_update_complete_evt(hdev, skb); + break; + case HCI_EV_LE_ADVERTISING_REPORT: hci_le_adv_report_evt(hdev, skb); break;
--
1.9.3