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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>,
        Joy Shermin <shermin.joy@intel.com>
Subject: [PATCH 4/7] Bluetooth: LL_PRIVACY re-load resolving list
Date:   Thu, 12 Mar 2020 15:37:51 +0530
Message-Id: <20200312100754.3445-5-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

The patch is used to load the entries in the local IRK to the
Bluetooth LE controller resolving list.

Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
Signed-off-by: Joy Shermin <shermin.joy@intel.com>
---
 include/net/bluetooth/hci_core.h |  1 +
 net/bluetooth/hci_request.c      | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 43d31a9339a6..46d2d3e10c97 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1659,6 +1659,7 @@ void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
 			       u8 *bdaddr_type);
 int hci_req_update_resolving_list(struct hci_dev *hdev,  u8 addr_type,
 				  bdaddr_t *bdaddr, u8 irk[16]);
+void hci_load_resolving_list(struct hci_dev *hdev);
 void hci_req_update_resolving_list_local_irk(struct hci_dev *hdev);
 
 void hci_req_del_from_resolving_list(struct hci_dev *hdev, u8 addr_type,
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 9ffb62178d24..e17db3103a3d 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1015,6 +1015,35 @@ void hci_req_update_resolving_list_local_irk(struct hci_dev *hdev)
 	hci_req_run(&req, NULL);
 }
 
+void hci_load_resolving_list (struct hci_dev *hdev)
+{
+	struct smp_irk *irk;
+	u8 num = 0;
+
+	/* 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;
+
+	/* Load the first le_resolving_list_size entries from IRK
+	 * list in to resolving list.
+	 */
+	rcu_read_lock();
+	list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
+		if (num++ >= hdev->le_resolv_list_size)
+			return;
+
+		hci_req_update_resolving_list(hdev, irk->addr_type, &irk->bdaddr, irk->val);
+	}
+
+	rcu_read_unlock();
+}
+
 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;
-- 
2.17.1