[PATCH v2 0/7] LL Privacy support

[PATCH v2 0/7] LL Privacy support

[Sathish Narasimman]

Based on the input the patches modified and verifed accordingly.

Marcel Holtmann (3):
  Bluetooth: Translate additional address type correctly
  Bluetooth: Configure controller address resolution if available
  Bluetooth: Update resolving list when updating whitelist

Sathish Narasimman (4):
  Bluetooth: Translate additional address type during le_conn
  Bluetooth: Let controller creates RPA during le create conn
  Bluetooth: Enable/Disable address resolution during le create conn
  Bluetooth: Enable RPA Timeout

 include/net/bluetooth/hci.h      |   8 ++-
 include/net/bluetooth/hci_core.h |   3 +
 net/bluetooth/hci_conn.c         |   6 +-
 net/bluetooth/hci_core.c         |  17 +++++
 net/bluetooth/hci_event.c        |  20 ++++++
 net/bluetooth/hci_request.c      | 119 ++++++++++++++++++++++++++-----
 net/bluetooth/hci_request.h      |   3 +-
 net/bluetooth/mgmt.c             |   2 +-
 8 files changed, 157 insertions(+), 21 deletions(-)

-- 
2.17.1

[PATCH v2 1/7] Bluetooth: Translate additional address type correctly

[Sathish Narasimman]

From: Marcel Holtmann <marcel@holtmann.org>

When using controller based address resolution, then the new address
types 0x02 and 0x03 are used. These types need to be converted back into
either public address or random address types.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
---
 include/net/bluetooth/hci.h | 6 ++++--
 net/bluetooth/hci_core.c    | 9 +++++++++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 16ab6ce87883..1165dfea56a9 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -2268,8 +2268,10 @@ struct hci_ev_le_conn_complete {
 #define LE_EXT_ADV_SCAN_RSP		0x0008
 #define LE_EXT_ADV_LEGACY_PDU		0x0010
 
-#define ADDR_LE_DEV_PUBLIC	0x00
-#define ADDR_LE_DEV_RANDOM	0x01
+#define ADDR_LE_DEV_PUBLIC		0x00
+#define ADDR_LE_DEV_RANDOM		0x01
+#define ADDR_LE_DEV_PUBLIC_RESOLVED	0x02
+#define ADDR_LE_DEV_RANDOM_RESOLVED	0x03
 
 #define HCI_EV_LE_ADVERTISING_REPORT	0x02
 struct hci_ev_le_advertising_info {
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index dbe2d79f233f..f4ceda1f1454 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3145,6 +3145,15 @@ struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
 {
 	struct hci_conn_params *param;
 
+	switch (addr_type) {
+	case ADDR_LE_DEV_PUBLIC_RESOLVED:
+		addr_type = ADDR_LE_DEV_PUBLIC;
+		break;
+	case ADDR_LE_DEV_RANDOM_RESOLVED:
+		addr_type = ADDR_LE_DEV_RANDOM;
+		break;
+	}
+
 	list_for_each_entry(param, list, action) {
 		if (bacmp(&param->addr, addr) == 0 &&
 		    param->addr_type == addr_type)
-- 
2.17.1

[PATCH v2 2/7] Bluetooth: Configure controller address resolution if available

[Sathish Narasimman]

From: Marcel Holtmann <marcel@holtmann.org>

When the LL Privacy support is available, then as part of enabling or
disabling passive background scanning, it is required to set up the
controller based address resolution as well.

Since only passive background scanning is utilizing the whitelist, the
address resolution is now bound to the whitelist and passive background
scanning. All other resolution can be easily done by the host stack.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
---
 include/net/bluetooth/hci_core.h |  3 +++
 net/bluetooth/hci_request.c      | 26 +++++++++++++++++++++++---
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index cdd4f1db8670..c17c8d820493 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1279,6 +1279,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
 			 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
 
+/* Use LL Privacy based address resolution if supported */
+#define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
+
 /* Use ext scanning if set ext scan param and ext scan enable is supported */
 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
 			   ((dev)->commands[37] & 0x40))
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 1fc55685da62..1d885ccd5419 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -676,6 +676,12 @@ void hci_req_add_le_scan_disable(struct hci_request *req)
 		cp.enable = LE_SCAN_DISABLE;
 		hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
 	}
+
+	if (use_ll_privacy(hdev) &&
+	    hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
+		__u8 enable = 0x00;
+		hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
+	}
 }
 
 static void del_from_white_list(struct hci_request *req, bdaddr_t *bdaddr,
@@ -808,10 +814,16 @@ static bool scan_use_rpa(struct hci_dev *hdev)
 }
 
 static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval,
-			       u16 window, u8 own_addr_type, u8 filter_policy)
+			       u16 window, u8 own_addr_type, u8 filter_policy,
+			       bool addr_resolv)
 {
 	struct hci_dev *hdev = req->hdev;
 
+	if (use_ll_privacy(hdev) && addr_resolv) {
+		u8 enable = 0x01;
+		hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
+	}
+
 	/* Use ext scanning if set ext scan param and ext scan enable is
 	 * supported
 	 */
@@ -885,12 +897,18 @@ static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval,
 	}
 }
 
+/* Ensure to call hci_req_add_le_scan_disable() first to disable the
+ * controller based address resolution to be able to reconfigure
+ * resolving list.
+ */
 void hci_req_add_le_passive_scan(struct hci_request *req)
 {
 	struct hci_dev *hdev = req->hdev;
 	u8 own_addr_type;
 	u8 filter_policy;
 	u16 window, interval;
+	/* Background scanning should run with address resolution */
+	bool addr_resolv = true;
 
 	if (hdev->scanning_paused) {
 		bt_dev_dbg(hdev, "Scanning is paused for suspend");
@@ -936,7 +954,7 @@ void hci_req_add_le_passive_scan(struct hci_request *req)
 
 	bt_dev_dbg(hdev, "LE passive scan with whitelist = %d", filter_policy);
 	hci_req_start_scan(req, LE_SCAN_PASSIVE, interval, window,
-			   own_addr_type, filter_policy);
+			   own_addr_type, filter_policy, addr_resolv);
 }
 
 static u8 get_adv_instance_scan_rsp_len(struct hci_dev *hdev, u8 instance)
@@ -2725,6 +2743,8 @@ static int active_scan(struct hci_request *req, unsigned long opt)
 	u8 own_addr_type;
 	/* White list is not used for discovery */
 	u8 filter_policy = 0x00;
+	/* Discovery doesn't require controller address resolution */
+	bool addr_resolv = false;
 	int err;
 
 	BT_DBG("%s", hdev->name);
@@ -2746,7 +2766,7 @@ static int active_scan(struct hci_request *req, unsigned long opt)
 		own_addr_type = ADDR_LE_DEV_PUBLIC;
 
 	hci_req_start_scan(req, LE_SCAN_ACTIVE, interval, DISCOV_LE_SCAN_WIN,
-			   own_addr_type, filter_policy);
+			   own_addr_type, filter_policy, addr_resolv);
 	return 0;
 }
 
-- 
2.17.1

[PATCH v2 3/7] Bluetooth: Update resolving list when updating whitelist

[Sathish Narasimman]

From: Marcel Holtmann <marcel@holtmann.org>

When the whitelist is updated, then also update the entries of the
resolving list for devices where IRKs are available.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
---
 net/bluetooth/hci_request.c | 41 +++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 1d885ccd5419..bcd64dec9989 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -695,6 +695,21 @@ static void del_from_white_list(struct hci_request *req, bdaddr_t *bdaddr,
 	bt_dev_dbg(req->hdev, "Remove %pMR (0x%x) from whitelist", &cp.bdaddr,
 		   cp.bdaddr_type);
 	hci_req_add(req, HCI_OP_LE_DEL_FROM_WHITE_LIST, sizeof(cp), &cp);
+
+	if (use_ll_privacy(req->hdev)) {
+		struct smp_irk *irk;
+
+		irk = hci_find_irk_by_addr(req->hdev, bdaddr, bdaddr_type);
+		if (irk) {
+			struct hci_cp_le_del_from_resolv_list cp;
+
+			cp.bdaddr_type = bdaddr_type;
+			bacpy(&cp.bdaddr, bdaddr);
+
+			hci_req_add(req, HCI_OP_LE_DEL_FROM_RESOLV_LIST,
+				    sizeof(cp), &cp);
+		}
+	}
 }
 
 /* Adds connection to white list if needed. On error, returns -1. */
@@ -715,7 +730,7 @@ static int add_to_white_list(struct hci_request *req,
 		return -1;
 
 	/* White list can not be used with RPAs */
-	if (!allow_rpa &&
+	if (!allow_rpa && !use_ll_privacy(hdev) &&
 	    hci_find_irk_by_addr(hdev, &params->addr, params->addr_type)) {
 		return -1;
 	}
@@ -732,6 +747,28 @@ static int add_to_white_list(struct hci_request *req,
 		   cp.bdaddr_type);
 	hci_req_add(req, HCI_OP_LE_ADD_TO_WHITE_LIST, sizeof(cp), &cp);
 
+	if (use_ll_privacy(hdev)) {
+		struct smp_irk *irk;
+
+		irk = hci_find_irk_by_addr(hdev, &params->addr,
+					   params->addr_type);
+		if (irk) {
+			struct hci_cp_le_add_to_resolv_list cp;
+
+			cp.bdaddr_type = params->addr_type;
+			bacpy(&cp.bdaddr, &params->addr);
+			memcpy(cp.peer_irk, irk->val, 16);
+
+			if (hci_dev_test_flag(hdev, HCI_PRIVACY))
+				memcpy(cp.local_irk, hdev->irk, 16);
+			else
+				memset(cp.local_irk, 0, 16);
+
+			hci_req_add(req, HCI_OP_LE_ADD_TO_RESOLV_LIST,
+				    sizeof(cp), &cp);
+		}
+	}
+
 	return 0;
 }
 
@@ -772,7 +809,7 @@ static u8 update_white_list(struct hci_request *req)
 		}
 
 		/* White list can not be used with RPAs */
-		if (!allow_rpa &&
+		if (!allow_rpa && !use_ll_privacy(hdev) &&
 		    hci_find_irk_by_addr(hdev, &b->bdaddr, b->bdaddr_type)) {
 			return 0x00;
 		}
-- 
2.17.1

[PATCH 4/7] Bluetooth: Translate additional address type during le_conn

[Sathish Narasimman]

When using controller based address resolution, then the new address
types 0x02 and 0x03 are used. These types need to be converted back into
either public address or random address types.

This patch is specially during LE_CREATE_CONN if using own_add_type as 0x02
or 0x03.

Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
---
 net/bluetooth/hci_event.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index cfeaee347db3..9c9c434844f2 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2296,6 +2296,22 @@ static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
 	if (!conn)
 		return;
 
+	/* When using controller based address resolution, then the new
+	 * address types 0x02 and 0x03 are used. These types need to be
+	 * converted back into either public address or random address type
+	 */
+	if (use_ll_privacy(hdev) &&
+	    hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
+		switch (own_address_type) {
+		case ADDR_LE_DEV_PUBLIC_RESOLVED:
+			own_address_type = ADDR_LE_DEV_PUBLIC;
+			break;
+		case ADDR_LE_DEV_RANDOM_RESOLVED:
+			own_address_type = ADDR_LE_DEV_RANDOM;
+			break;
+		}
+	}
+
 	/* Store the initiator and responder address information which
 	 * is needed for SMP. These values will not change during the
 	 * lifetime of the connection.
-- 
2.17.1

[PATCH 5/7] Bluetooth: Let controller creates RPA during le create conn

[Sathish Narasimman]

When address resolution is enabled and set_privacy is enabled let's
use own address type as 0x03

Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
---
 net/bluetooth/hci_request.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index bcd64dec9989..6e1036cc8b1e 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -2183,7 +2183,13 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
 	if (use_rpa) {
 		int to;
 
-		*own_addr_type = ADDR_LE_DEV_RANDOM;
+		/* If Controller supports LL Privacy use own address type is
+		 * 0x03
+		 */
+		if (use_ll_privacy(hdev))
+			*own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
+		else
+			*own_addr_type = ADDR_LE_DEV_RANDOM;
 
 		if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) &&
 		    !bacmp(&hdev->random_addr, &hdev->rpa))
-- 
2.17.1

[PATCH 6/7] Bluetooth: Enable/Disable address resolution during le create conn

[Sathish Narasimman]

In this patch if le_create_conn process is started restrict to
disable address resolution and same is disabled during
le_enh_connection_complete

Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
---
 net/bluetooth/hci_conn.c    |  6 ++++-
 net/bluetooth/hci_event.c   |  4 ++++
 net/bluetooth/hci_request.c | 46 ++++++++++++++++++++++++++++---------
 net/bluetooth/hci_request.h |  3 ++-
 net/bluetooth/mgmt.c        |  2 +-
 5 files changed, 47 insertions(+), 14 deletions(-)

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 307800fd18e6..bbd6d06bc900 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1008,6 +1008,10 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 	struct smp_irk *irk;
 	struct hci_request req;
 	int err;
+	/* This ensures that during disable le_scan address resolution
+	 * will not be disabled if it is followed by le_create_conn
+	 */
+	bool rpa_le_conn = true;
 
 	/* Let's make sure that le is enabled.*/
 	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
@@ -1109,7 +1113,7 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 	 * state.
 	 */
 	if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
-		hci_req_add_le_scan_disable(&req);
+		hci_req_add_le_scan_disable(&req, rpa_le_conn);
 		hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED);
 	}
 
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 9c9c434844f2..1866de712bb2 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5225,6 +5225,10 @@ static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev,
 			     le16_to_cpu(ev->interval),
 			     le16_to_cpu(ev->latency),
 			     le16_to_cpu(ev->supervision_timeout));
+
+	if (use_ll_privacy(hdev) &&
+	    hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
+		hci_req_disable_address_resolution(hdev);
 }
 
 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 6e1036cc8b1e..8552a37976ec 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -429,7 +429,7 @@ static void __hci_update_background_scan(struct hci_request *req)
 		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
 			return;
 
-		hci_req_add_le_scan_disable(req);
+		hci_req_add_le_scan_disable(req, false);
 
 		BT_DBG("%s stopping background scanning", hdev->name);
 	} else {
@@ -448,7 +448,7 @@ static void __hci_update_background_scan(struct hci_request *req)
 		 * don't miss any advertising (due to duplicates filter).
 		 */
 		if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
-			hci_req_add_le_scan_disable(req);
+			hci_req_add_le_scan_disable(req, false);
 
 		hci_req_add_le_passive_scan(req);
 
@@ -653,7 +653,7 @@ void __hci_req_update_eir(struct hci_request *req)
 	hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
 }
 
-void hci_req_add_le_scan_disable(struct hci_request *req)
+void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn)
 {
 	struct hci_dev *hdev = req->hdev;
 
@@ -677,8 +677,9 @@ void hci_req_add_le_scan_disable(struct hci_request *req)
 		hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
 	}
 
+	/* Disable address resolution */
 	if (use_ll_privacy(hdev) &&
-	    hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
+	    hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION) && !rpa_le_conn) {
 		__u8 enable = 0x00;
 		hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
 	}
@@ -1054,7 +1055,7 @@ static void hci_req_set_event_filter(struct hci_request *req)
 static void hci_req_config_le_suspend_scan(struct hci_request *req)
 {
 	/* Can't change params without disabling first */
-	hci_req_add_le_scan_disable(req);
+	hci_req_add_le_scan_disable(req, false);
 
 	/* Configure params and enable scanning */
 	hci_req_add_le_passive_scan(req);
@@ -1121,7 +1122,7 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 		hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &page_scan);
 
 		/* Disable LE passive scan */
-		hci_req_add_le_scan_disable(&req);
+		hci_req_add_le_scan_disable(&req, false);
 
 		/* Mark task needing completion */
 		set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
@@ -1682,6 +1683,29 @@ int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance)
 	return hci_req_run(&req, NULL);
 }
 
+
+static void enable_addr_resolution_complete(struct hci_dev *hdev, u8 status,
+					    u16 opcode)
+{
+	BT_DBG("%s status %u", hdev->name, status);
+}
+
+void hci_req_disable_address_resolution(struct hci_dev *hdev)
+{
+	struct hci_request req;
+	__u8 enable = 0x00;
+
+	if (!use_ll_privacy(hdev) &&
+	    !hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
+		return;
+
+	hci_req_init(&req, hdev);
+
+	hci_req_add(&req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
+
+	hci_req_run(&req, enable_addr_resolution_complete);
+}
+
 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
 {
 	BT_DBG("%s status %u", hdev->name, status);
@@ -2608,7 +2632,7 @@ static void bg_scan_update(struct work_struct *work)
 
 static int le_scan_disable(struct hci_request *req, unsigned long opt)
 {
-	hci_req_add_le_scan_disable(req);
+	hci_req_add_le_scan_disable(req, false);
 	return 0;
 }
 
@@ -2706,7 +2730,7 @@ static int le_scan_restart(struct hci_request *req, unsigned long opt)
 	if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
 		return 0;
 
-	hci_req_add_le_scan_disable(req);
+	hci_req_add_le_scan_disable(req, false);
 
 	if (use_ext_scan(hdev)) {
 		struct hci_cp_le_set_ext_scan_enable ext_enable_cp;
@@ -2797,7 +2821,7 @@ static int active_scan(struct hci_request *req, unsigned long opt)
 	 * discovery scanning parameters.
 	 */
 	if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
-		hci_req_add_le_scan_disable(req);
+		hci_req_add_le_scan_disable(req, false);
 
 	/* All active scans will be done with either a resolvable private
 	 * address (when privacy feature has been enabled) or non-resolvable
@@ -2911,14 +2935,14 @@ bool hci_req_stop_discovery(struct hci_request *req)
 
 		if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
 			cancel_delayed_work(&hdev->le_scan_disable);
-			hci_req_add_le_scan_disable(req);
+			hci_req_add_le_scan_disable(req, false);
 		}
 
 		ret = true;
 	} else {
 		/* Passive scanning */
 		if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
-			hci_req_add_le_scan_disable(req);
+			hci_req_add_le_scan_disable(req, false);
 			ret = true;
 		}
 	}
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 0e81614d235e..12bea10e7d70 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -65,11 +65,12 @@ void __hci_req_write_fast_connectable(struct hci_request *req, bool enable);
 void __hci_req_update_name(struct hci_request *req);
 void __hci_req_update_eir(struct hci_request *req);
 
-void hci_req_add_le_scan_disable(struct hci_request *req);
+void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn);
 void hci_req_add_le_passive_scan(struct hci_request *req);
 
 void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next);
 
+void hci_req_disable_address_resolution(struct hci_dev *hdev);
 void hci_req_reenable_advertising(struct hci_dev *hdev);
 void __hci_req_enable_advertising(struct hci_request *req);
 void __hci_req_disable_advertising(struct hci_request *req);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 9e8a3cccc6ca..97eb4f3a160b 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4848,7 +4848,7 @@ static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
 
 		hci_req_init(&req, hdev);
 
-		hci_req_add_le_scan_disable(&req);
+		hci_req_add_le_scan_disable(&req, false);
 		hci_req_add_le_passive_scan(&req);
 
 		hci_req_run(&req, NULL);
-- 
2.17.1

[PATCH 7/7] Bluetooth: Enable RPA Timeout

[Sathish Narasimman]

Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
---
 include/net/bluetooth/hci.h | 2 ++
 net/bluetooth/hci_core.c    | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 1165dfea56a9..12005fbe6e09 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -1637,6 +1637,8 @@ struct hci_rp_le_read_resolv_list_size {
 
 #define HCI_OP_LE_SET_ADDR_RESOLV_ENABLE 0x202d
 
+#define HCI_OP_LE_SET_RPA_TIMEOUT	0x202e
+
 #define HCI_OP_LE_READ_MAX_DATA_LEN	0x202f
 struct hci_rp_le_read_max_data_len {
 	__u8	status;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index f4ceda1f1454..67e1434c3f31 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -763,6 +763,14 @@ static int hci_init3_req(struct hci_request *req, unsigned long opt)
 			hci_req_add(req, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL);
 		}
 
+		if (hdev->commands[35] & 0x40) {
+			__le16 rpa_timeout = cpu_to_le16(hdev->rpa_timeout);
+
+			/* Set RPA timeout */
+			hci_req_add(req, HCI_OP_LE_SET_RPA_TIMEOUT, 2,
+				    &rpa_timeout);
+		}
+
 		if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) {
 			/* Read LE Maximum Data Length */
 			hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL);
-- 
2.17.1

Re: [PATCH v2 0/7] LL Privacy support

[Sathish Narasimman]

Hi

On Wed, Jun 3, 2020 at 10:44 PM Sathish Narasimman <nsathish41@gmail.com> wrote:
>
> Based on the input the patches modified and verifed accordingly.
>
> Marcel Holtmann (3):
>   Bluetooth: Translate additional address type correctly
>   Bluetooth: Configure controller address resolution if available
>   Bluetooth: Update resolving list when updating whitelist
>
> Sathish Narasimman (4):
>   Bluetooth: Translate additional address type during le_conn
>   Bluetooth: Let controller creates RPA during le create conn
>   Bluetooth: Enable/Disable address resolution during le create conn
>   Bluetooth: Enable RPA Timeout
>
>  include/net/bluetooth/hci.h      |   8 ++-
>  include/net/bluetooth/hci_core.h |   3 +
>  net/bluetooth/hci_conn.c         |   6 +-
>  net/bluetooth/hci_core.c         |  17 +++++
>  net/bluetooth/hci_event.c        |  20 ++++++
>  net/bluetooth/hci_request.c      | 119 ++++++++++++++++++++++++++-----
>  net/bluetooth/hci_request.h      |   3 +-
>  net/bluetooth/mgmt.c             |   2 +-
>  8 files changed, 157 insertions(+), 21 deletions(-)
>
> --
> 2.17.1
>

Gentle Reminder
Also, the present approach will only work for the central role.

I am planning to work in a peripheral role.
need help with a design approach on the peripheral.


Regards
Sathish N

Re: [PATCH v2 0/7] LL Privacy support

[Marcel Holtmann]

Hi Sathish,

> Based on the input the patches modified and verifed accordingly.
> 
> Marcel Holtmann (3):
>  Bluetooth: Translate additional address type correctly
>  Bluetooth: Configure controller address resolution if available
>  Bluetooth: Update resolving list when updating whitelist
> 
> Sathish Narasimman (4):
>  Bluetooth: Translate additional address type during le_conn
>  Bluetooth: Let controller creates RPA during le create conn
>  Bluetooth: Enable/Disable address resolution during le create conn
>  Bluetooth: Enable RPA Timeout
> 
> include/net/bluetooth/hci.h      |   8 ++-
> include/net/bluetooth/hci_core.h |   3 +
> net/bluetooth/hci_conn.c         |   6 +-
> net/bluetooth/hci_core.c         |  17 +++++
> net/bluetooth/hci_event.c        |  20 ++++++
> net/bluetooth/hci_request.c      | 119 ++++++++++++++++++++++++++-----
> net/bluetooth/hci_request.h      |   3 +-
> net/bluetooth/mgmt.c             |   2 +-
> 8 files changed, 157 insertions(+), 21 deletions(-)

can you please rebase this against the latest bluetooth-next tree. With the introduction of the advertising monitor, we now have a few conflicts that you need to resolve.

Also as discussed, we wanted to hide this initially after an experimental feature flag so it would need to be enabled first. And I think once enabled, we need to take the support of “advertising” aka peripheral away from the controller until we can fully ensure it works for scanning and advertising at the same time.

Regards

Marcel

Re: [PATCH v2 0/7] LL Privacy support

[Sathish Narasimman]

Hi Marcel

On Fri, Jun 19, 2020 at 1:28 PM Marcel Holtmann <marcel@holtmann.org> wrote:
>
> Hi Sathish,
>
> > Based on the input the patches modified and verifed accordingly.
> >
> > Marcel Holtmann (3):
> >  Bluetooth: Translate additional address type correctly
> >  Bluetooth: Configure controller address resolution if available
> >  Bluetooth: Update resolving list when updating whitelist
> >
> > Sathish Narasimman (4):
> >  Bluetooth: Translate additional address type during le_conn
> >  Bluetooth: Let controller creates RPA during le create conn
> >  Bluetooth: Enable/Disable address resolution during le create conn
> >  Bluetooth: Enable RPA Timeout
> >
> > include/net/bluetooth/hci.h      |   8 ++-
> > include/net/bluetooth/hci_core.h |   3 +
> > net/bluetooth/hci_conn.c         |   6 +-
> > net/bluetooth/hci_core.c         |  17 +++++
> > net/bluetooth/hci_event.c        |  20 ++++++
> > net/bluetooth/hci_request.c      | 119 ++++++++++++++++++++++++++-----
> > net/bluetooth/hci_request.h      |   3 +-
> > net/bluetooth/mgmt.c             |   2 +-
> > 8 files changed, 157 insertions(+), 21 deletions(-)
>
> can you please rebase this against the latest bluetooth-next tree. With the introduction of the advertising monitor, we now have a few conflicts that you need to resolve.
>
> Also as discussed, we wanted to hide this initially after an experimental feature flag so it would need to be enabled first. And I think once enabled, we need to take the support of “advertising” aka peripheral away from the controller until we can fully ensure it works for scanning and advertising at the same time.

Updated the v3  rebased and the flag is introduced to enable LL
privacy from the host using mgmt set_privacy interface.

what I understood regarding removing of advertising was when we enable
LL privacy using mgmt interface. the advertisement should not work
(correct me please).

>
> Regards
>
> Marcel
>

Regards
Sathish N