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From:   Sathish Narsimman <nsathish41@gmail.com>
To:     linux-bluetooth@vger.kernel.org, nsathish41@gmail.com
Cc:     chethan.tumkur.narayan@intel.com,
        Sathish Narsimman <sathish.narasimman@intel.com>
Subject: [PATCH 1/7] Bluetooth: LL Privacy Delete Store Resolving list
Date:   Thu, 12 Mar 2020 15:37:48 +0530
Message-Id: <20200312100754.3445-2-sathish.narasimman@intel.com>
In-Reply-To: <20200312100754.3445-1-sathish.narasimman@intel.com>
References: <20200312100754.3445-1-sathish.narasimman@intel.com>
Sender: linux-bluetooth-owner@vger.kernel.org
Precedence: bulk

This patch help to delte the resolving list stored in the BT
Controller w.r.t BD_ADDR.

Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
---
 include/net/bluetooth/hci.h      |  1 +
 include/net/bluetooth/hci_core.h |  2 ++
 net/bluetooth/hci_request.c      | 33 ++++++++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 5f60e135aeb6..352bc43940ff 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -457,6 +457,7 @@ enum {
 #define HCI_LE_DATA_LEN_EXT		0x20
 #define HCI_LE_PHY_2M			0x01
 #define HCI_LE_PHY_CODED		0x08
+#define HCI_LE_LL_PRIVACY		0x40
 #define HCI_LE_EXT_ADV			0x10
 #define HCI_LE_EXT_SCAN_POLICY		0x80
 #define HCI_LE_PHY_2M			0x01
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index d4e28773d378..5f04ef88da35 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1657,6 +1657,8 @@ void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
 
 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
 			       u8 *bdaddr_type);
+void hci_req_del_from_resolving_list(struct hci_dev *hdev, u8 addr_type,
+				     bdaddr_t *bdaddr);
 
 #define SCO_AIRMODE_MASK       0x0003
 #define SCO_AIRMODE_CVSD       0x0000
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index bf83179ab9d1..f4bbd3b79210 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -885,6 +885,39 @@ static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval,
 	}
 }
 
+void hci_req_del_from_resolving_list(struct hci_dev *hdev, u8 addr_type, bdaddr_t *bdaddr)
+{
+	struct hci_cp_le_del_from_resolv_list cp;
+	struct hci_request req;
+	struct bdaddr_list_with_irk *irk;
+
+	BT_DBG("");
+
+	/* Nothing to be done if LL privacy is not supported */
+	if ( !(hdev->le_features[0] & HCI_LE_LL_PRIVACY) )
+		return;
+
+	if ( !hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION) &&
+	    ( hci_dev_test_flag(hdev, HCI_LE_ADV) ||
+	      hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
+	      hci_lookup_le_connect(hdev) ) )
+		return;
+
+	/* If the device is not present in resolving list
+	 * no need to send HCI command.
+	 */
+	irk = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, bdaddr, addr_type);
+	if (!irk)
+		return;
+
+	hci_req_init(&req, hdev);
+	cp.bdaddr_type = addr_type;
+	bacpy(&cp.bdaddr, bdaddr);
+
+	hci_req_add(&req, HCI_OP_LE_DEL_FROM_RESOLV_LIST, sizeof(cp), &cp);
+	hci_req_run(&req, NULL);
+}
+
 void hci_req_add_le_passive_scan(struct hci_request *req)
 {
 	struct hci_dev *hdev = req->hdev;
-- 
2.17.1