[PATCH v3 4/9] Bluetooth: Clear advertising cache before scanning
From: Andre Guedes <hidden>
Date: 2011-05-26 19:23:52
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
The LE advertising cache should be cleared before performing a LE scanning. This will force the cache to contain only fresh advertising entries. Signed-off-by: Andre Guedes <redacted> --- include/net/bluetooth/hci.h | 6 ++++++ net/bluetooth/hci_event.c | 27 +++++++++++++++++++++++++++ 2 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index ec0fb2d..ed1a0d1 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h@@ -710,6 +710,12 @@ struct hci_rp_le_read_buffer_size { __u8 le_max_pkt; } __packed; +#define HCI_OP_LE_SET_SCAN_ENABLE 0x200c +struct hci_cp_le_set_scan_enable { + __u8 enable; + __u8 filter_dup; +} __packed; + #define HCI_OP_LE_CREATE_CONN 0x200d struct hci_cp_le_create_conn { __le16 scan_interval;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 458caac..556c38a 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c@@ -839,6 +839,29 @@ static void hci_cc_read_local_oob_data_reply(struct hci_dev *hdev, rp->randomizer, rp->status); } +static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, + struct sk_buff *skb) +{ + struct hci_cp_le_set_scan_enable *cp; + __u8 status = *((__u8 *) skb->data); + + BT_DBG("%s status 0x%x", hdev->name, status); + + if (status) + return; + + cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); + if (!cp) + return; + + hci_dev_lock(hdev); + + if (cp->enable == 0x01) + hci_adv_entries_clear(hdev); + + hci_dev_unlock(hdev); +} + static inline void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) { BT_DBG("%s status 0x%x", hdev->name, status);
@@ -1814,6 +1837,10 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk hci_cc_user_confirm_neg_reply(hdev, skb); break; + case HCI_OP_LE_SET_SCAN_ENABLE: + hci_cc_le_set_scan_enable(hdev, skb); + break; + default: BT_DBG("%s opcode 0x%x", hdev->name, opcode); break;
--
1.7.4.1