* [PATCH] Bluetooth: Ignore IRKs with no Identity Address
From: johan.hedberg @ 2014-02-25 20:24 UTC (permalink / raw)
To: linux-bluetooth
From: Johan Hedberg <johan.hedberg@intel.com>
The Core Specification (4.1) leaves room for sending an SMP Identity
Address Information PDU with an all-zeros BD_ADDR value. This
essentially means that we would not have an Identity Address for the
device and the only means of identifying it would be the IRK value
itself.
Due to lack of any known implementations behaving like this it's best to
keep our implementation as simple as possible as far as handling such
situations is concerned. This patch updates the Identity Address
Information handler function to simply ignore the IRK received from such
a device.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
net/bluetooth/smp.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 79a80f44c832..50355d045992 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -1003,6 +1003,19 @@ static int smp_cmd_ident_addr_info(struct l2cap_conn *conn,
skb_pull(skb, sizeof(*info));
+ /* Strictly speaking the Core Specification (4.1) allows sending
+ * an empty address which would force us to rely on just the IRK
+ * as "identity information". However, since such
+ * implementations are not known of and in order to not over
+ * complicate our implementation, simply pretend that we never
+ * received an IRK for such a device.
+ */
+ if (!bacmp(&info->bdaddr, BDADDR_ANY)) {
+ BT_ERR("Ignoring IRK with no identity address");
+ smp_distribute_keys(conn, 1);
+ return 0;
+ }
+
bacpy(&smp->id_addr, &info->bdaddr);
smp->id_addr_type = info->addr_type;
--
1.8.5.3
^ permalink raw reply related
* Re: [PATCH] Bluetooth: Ignore IRKs with no Identity Address
From: Marcel Holtmann @ 2014-02-25 20:32 UTC (permalink / raw)
To: Johan Hedberg; +Cc: bluez mailin list (linux-bluetooth@vger.kernel.org)
In-Reply-To: <1393359877-17839-1-git-send-email-johan.hedberg@gmail.com>
Hi Johan,
> The Core Specification (4.1) leaves room for sending an SMP Identity
> Address Information PDU with an all-zeros BD_ADDR value. This
> essentially means that we would not have an Identity Address for the
> device and the only means of identifying it would be the IRK value
> itself.
>
> Due to lack of any known implementations behaving like this it's best to
> keep our implementation as simple as possible as far as handling such
> situations is concerned. This patch updates the Identity Address
> Information handler function to simply ignore the IRK received from such
> a device.
>
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
> net/bluetooth/smp.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
patch has been applied to bluetooth-next tree.
Regards
Marcel
^ permalink raw reply
* [PATCH 00/17] LE auto connection
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
Hi all,
Since the latest reviews of this "LE auto connection" series were basically
minor changes, I replaced the 'RFC' label by 'PATCH'.
This patch set differs from previous one by the hci_connect() refactoring
(Patches 5 and 6) requested in the last review.
BR,
Andre
PS: The patch "[PATCH] tools/btmgmt: Add command to set scan parameters"
(already sent to ML) can help with testing different scanning parameters.
Andre Guedes (17):
Bluetooth: Create hci_req_add_le_scan_disable helper
Bluetooth: Declare le_conn_failed in hci_core.h
Bluetooth: Stop scanning on LE connection
Bluetooth: Remove unused function
Bluetooth: Refactor HCI connection code
Bluetooth: Move address type conversion to outside hci_connect_le
Bluetooth: Introduce hdev->pend_le_conn list
Bluetooth: Introduce LE auto connection infrastructure
Bluetooth: Introduce LE auto connect options
Bluetooth: Connection parameters and auto connection
Bluetooth: Temporarily stop background scanning on discovery
Bluetooth: Auto connection and power on
Bluetooth: Connection parameters and resolvable address
Bluetooth: Support resolvable private addresses
Bluetooth: Add le_auto_conn file on debugfs
Bluetooth: Create hci_req_add_le_passive_scan helper
Bluetooth: Update background scan parameters
include/net/bluetooth/hci.h | 1 +
include/net/bluetooth/hci_core.h | 43 ++++-
net/bluetooth/hci_conn.c | 115 +++++++-----
net/bluetooth/hci_core.c | 369 +++++++++++++++++++++++++++++++++++++--
net/bluetooth/hci_event.c | 72 +++++++-
net/bluetooth/l2cap_core.c | 19 +-
net/bluetooth/mgmt.c | 68 +++++---
7 files changed, 589 insertions(+), 98 deletions(-)
--
1.8.5.4
^ permalink raw reply
* [PATCH 01/17] Bluetooth: Create hci_req_add_le_scan_disable helper
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch moves stop LE scanning duplicate code to one single
place and reuses it. This will avoid more duplicate code in
upcoming patches.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 2 ++
net/bluetooth/hci_core.c | 14 ++++++++++----
net/bluetooth/mgmt.c | 12 ++----------
3 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 269c820..bef65d0 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1129,6 +1129,8 @@ void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
const void *param, u8 event);
void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
+void hci_req_add_le_scan_disable(struct hci_request *req);
+
struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
const void *param, u32 timeout);
struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 669c76e..9a078cf 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3318,7 +3318,6 @@ static void le_scan_disable_work(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev,
le_scan_disable.work);
- struct hci_cp_le_set_scan_enable cp;
struct hci_request req;
int err;
@@ -3326,9 +3325,7 @@ static void le_scan_disable_work(struct work_struct *work)
hci_req_init(&req, hdev);
- memset(&cp, 0, sizeof(cp));
- cp.enable = LE_SCAN_DISABLE;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+ hci_req_add_le_scan_disable(&req);
err = hci_req_run(&req, le_scan_disable_work_complete);
if (err)
@@ -4872,3 +4869,12 @@ static void hci_cmd_work(struct work_struct *work)
}
}
}
+
+void hci_req_add_le_scan_disable(struct hci_request *req)
+{
+ struct hci_cp_le_set_scan_enable cp;
+
+ memset(&cp, 0, sizeof(cp));
+ cp.enable = LE_SCAN_DISABLE;
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+}
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index d6e2692..cfcaf97 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1052,11 +1052,7 @@ static int clean_up_hci_state(struct hci_dev *hdev)
disable_advertising(&req);
if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
- struct hci_cp_le_set_scan_enable cp;
-
- memset(&cp, 0, sizeof(cp));
- cp.enable = LE_SCAN_DISABLE;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+ hci_req_add_le_scan_disable(&req);
}
list_for_each_entry(conn, &hdev->conn_hash.list, list) {
@@ -3527,7 +3523,6 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
struct hci_cp_remote_name_req_cancel cp;
struct inquiry_entry *e;
struct hci_request req;
- struct hci_cp_le_set_scan_enable enable_cp;
int err;
BT_DBG("%s", hdev->name);
@@ -3563,10 +3558,7 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
} else {
cancel_delayed_work(&hdev->le_scan_disable);
- memset(&enable_cp, 0, sizeof(enable_cp));
- enable_cp.enable = LE_SCAN_DISABLE;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE,
- sizeof(enable_cp), &enable_cp);
+ hci_req_add_le_scan_disable(&req);
}
break;
--
1.8.5.4
^ permalink raw reply related
* [PATCH 02/17] Bluetooth: Declare le_conn_failed in hci_core.h
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch adds the "hci_" prefix to le_conn_failed() helper and
declares it in hci_core.h so it can be reused in hci_event.c.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 2 ++
net/bluetooth/hci_conn.c | 4 ++--
net/bluetooth/hci_event.c | 6 +-----
3 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index bef65d0..4253bdf 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -653,6 +653,8 @@ int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
+void hci_le_conn_failed(struct hci_conn *conn, u8 status);
+
/*
* hci_conn_get() and hci_conn_put() are used to control the life-time of an
* "hci_conn" object. They do not guarantee that the hci_conn object is running,
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 3d6b1cf..dc8aad9 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -515,7 +515,7 @@ struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
EXPORT_SYMBOL(hci_get_route);
/* This function requires the caller holds hdev->lock */
-static void le_conn_failed(struct hci_conn *conn, u8 status)
+void hci_le_conn_failed(struct hci_conn *conn, u8 status)
{
struct hci_dev *hdev = conn->hdev;
@@ -545,7 +545,7 @@ static void create_le_conn_complete(struct hci_dev *hdev, u8 status)
if (!conn)
goto done;
- le_conn_failed(conn, status);
+ hci_le_conn_failed(conn, status);
done:
hci_dev_unlock(hdev);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 877cee8..eaa6965 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3658,11 +3658,7 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
}
if (ev->status) {
- mgmt_connect_failed(hdev, &conn->dst, conn->type,
- conn->dst_type, ev->status);
- hci_proto_connect_cfm(conn, ev->status);
- conn->state = BT_CLOSED;
- hci_conn_del(conn);
+ hci_le_conn_failed(conn, ev->status);
goto unlock;
}
--
1.8.5.4
^ permalink raw reply related
* [PATCH 03/17] Bluetooth: Stop scanning on LE connection
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
Some LE controllers don't support scanning and creating a connection
at the same time. So we should always stop scanning in order to
establish the connection.
Since we may prematurely stop the discovery procedure in favor of
the connection establishment, we should also cancel hdev->le_scan_
disable delayed work and set the discovery state to DISCOVERY_STOPPED.
This change does a small improvement since it is not mandatory the
user stops scanning before connecting anymore. Moreover, this change
is required by upcoming LE auto connection mechanism in order to work
properly with controllers that don't support background scanning and
connection establishment at the same time.
In future, we might want to do a small optimization by checking if
controller is able to scan and connect at the same time. For now,
we want the simplest approach so we always stop scanning (even if
the controller is able to carry out both operations).
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci.h | 1 +
net/bluetooth/hci_conn.c | 89 ++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 88 insertions(+), 2 deletions(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 1bb45a4..c3834d3 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -356,6 +356,7 @@ enum {
/* ---- HCI Error Codes ---- */
#define HCI_ERROR_AUTH_FAILURE 0x05
+#define HCI_ERROR_MEMORY_EXCEEDED 0x07
#define HCI_ERROR_CONNECTION_TIMEOUT 0x08
#define HCI_ERROR_REJ_BAD_ADDR 0x0f
#define HCI_ERROR_REMOTE_USER_TERM 0x13
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index dc8aad9..ae2c3e1 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -594,12 +594,83 @@ static int hci_create_le_conn(struct hci_conn *conn)
return 0;
}
+static void hci_req_add_le_create_conn(struct hci_request *req,
+ struct hci_conn *conn)
+{
+ struct hci_cp_le_create_conn cp;
+ struct hci_dev *hdev = conn->hdev;
+ u8 own_addr_type;
+
+ memset(&cp, 0, sizeof(cp));
+
+ /* Update random address, but set require_privacy to false so
+ * that we never connect with an unresolvable address.
+ */
+ if (hci_update_random_address(req, false, &own_addr_type))
+ return;
+
+ conn->src_type = own_addr_type;
+
+ cp.scan_interval = cpu_to_le16(hdev->le_scan_interval);
+ cp.scan_window = cpu_to_le16(hdev->le_scan_window);
+ bacpy(&cp.peer_addr, &conn->dst);
+ cp.peer_addr_type = conn->dst_type;
+ cp.own_address_type = conn->src_type;
+ cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
+ cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
+ cp.supervision_timeout = __constant_cpu_to_le16(0x002a);
+ cp.min_ce_len = __constant_cpu_to_le16(0x0000);
+ cp.max_ce_len = __constant_cpu_to_le16(0x0000);
+
+ hci_req_add(req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
+}
+
+static void stop_scan_complete(struct hci_dev *hdev, u8 status)
+{
+ struct hci_request req;
+ struct hci_conn *conn;
+ int err;
+
+ conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
+ if (!conn)
+ return;
+
+ if (status) {
+ BT_DBG("HCI request failed to stop scanning: status 0x%2.2x",
+ status);
+
+ hci_dev_lock(hdev);
+ hci_le_conn_failed(conn, status);
+ hci_dev_unlock(hdev);
+ return;
+ }
+
+ /* Since we may have prematurely stopped discovery procedure, we should
+ * update discovery state.
+ */
+ cancel_delayed_work(&hdev->le_scan_disable);
+ hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+
+ hci_req_init(&req, hdev);
+
+ hci_req_add_le_create_conn(&req, conn);
+
+ err = hci_req_run(&req, create_le_conn_complete);
+ if (err) {
+ hci_dev_lock(hdev);
+ hci_le_conn_failed(conn, HCI_ERROR_MEMORY_EXCEEDED);
+ hci_dev_unlock(hdev);
+ return;
+ }
+}
+
static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
u8 dst_type, u8 sec_level, u8 auth_type)
{
struct hci_conn_params *params;
struct hci_conn *conn;
struct smp_irk *irk;
+ struct hci_request req;
int err;
if (test_bit(HCI_ADVERTISING, &hdev->flags))
@@ -675,9 +746,23 @@ static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
conn->le_conn_max_interval = hdev->le_conn_max_interval;
}
- err = hci_create_le_conn(conn);
- if (err)
+ hci_req_init(&req, hdev);
+
+ /* If controller is scanning, we stop it since some controllers are
+ * not able to scan and connect at the same time.
+ */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+ hci_req_add_le_scan_disable(&req);
+ err = hci_req_run(&req, stop_scan_complete);
+ } else {
+ hci_req_add_le_create_conn(&req, conn);
+ err = hci_req_run(&req, create_le_conn_complete);
+ }
+
+ if (err) {
+ hci_conn_del(conn);
return ERR_PTR(err);
+ }
done:
hci_conn_hold(conn);
--
1.8.5.4
^ permalink raw reply related
* [PATCH 04/17] Bluetooth: Remove unused function
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch removes hci_create_le_conn() since it is not used anymore.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_conn.c | 43 -------------------------------------------
1 file changed, 43 deletions(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index ae2c3e1..a823d30 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -551,49 +551,6 @@ done:
hci_dev_unlock(hdev);
}
-static int hci_create_le_conn(struct hci_conn *conn)
-{
- struct hci_dev *hdev = conn->hdev;
- struct hci_cp_le_create_conn cp;
- struct hci_request req;
- u8 own_addr_type;
- int err;
-
- hci_req_init(&req, hdev);
-
- memset(&cp, 0, sizeof(cp));
-
- /* Update random address, but set require_privacy to false so
- * that we never connect with an unresolvable address.
- */
- err = hci_update_random_address(&req, false, &own_addr_type);
- if (err < 0)
- return err;
-
- conn->src_type = own_addr_type;
-
- cp.scan_interval = cpu_to_le16(hdev->le_scan_interval);
- cp.scan_window = cpu_to_le16(hdev->le_scan_window);
- bacpy(&cp.peer_addr, &conn->dst);
- cp.peer_addr_type = conn->dst_type;
- cp.own_address_type = own_addr_type;
- cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
- cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
- cp.supervision_timeout = __constant_cpu_to_le16(0x002a);
- cp.min_ce_len = __constant_cpu_to_le16(0x0000);
- cp.max_ce_len = __constant_cpu_to_le16(0x0000);
-
- hci_req_add(&req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
-
- err = hci_req_run(&req, create_le_conn_complete);
- if (err) {
- hci_conn_del(conn);
- return err;
- }
-
- return 0;
-}
-
static void hci_req_add_le_create_conn(struct hci_request *req,
struct hci_conn *conn)
{
--
1.8.5.4
^ permalink raw reply related
* [PATCH 05/17] Bluetooth: Refactor HCI connection code
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
hci_connect() is a very simple and useless wrapper of hci_connect_acl
and hci_connect_le functions. Addtionally, all places where hci_connect
is called the link type value is passed explicitly. This way, we can
safely delete hci_connect, declare hci_connect_acl and hci_connect_le
in hci_core.h and call them directly.
No functionality is changed by this patch.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 6 ++++--
net/bluetooth/hci_conn.c | 24 ++++--------------------
net/bluetooth/l2cap_core.c | 7 +++----
net/bluetooth/mgmt.c | 8 ++++----
4 files changed, 15 insertions(+), 30 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 4253bdf..20bdb2e 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -641,8 +641,10 @@ void hci_chan_del(struct hci_chan *chan);
void hci_chan_list_flush(struct hci_conn *conn);
struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
-struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
- __u8 dst_type, __u8 sec_level, __u8 auth_type);
+struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
+ u8 dst_type, u8 sec_level, u8 auth_type);
+struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
+ u8 sec_level, u8 auth_type);
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
__u16 setting);
int hci_conn_check_link_mode(struct hci_conn *conn);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index a823d30..7fbcc7d 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -621,8 +621,8 @@ static void stop_scan_complete(struct hci_dev *hdev, u8 status)
}
}
-static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
- u8 dst_type, u8 sec_level, u8 auth_type)
+struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
+ u8 dst_type, u8 sec_level, u8 auth_type)
{
struct hci_conn_params *params;
struct hci_conn *conn;
@@ -726,8 +726,8 @@ done:
return conn;
}
-static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
- u8 sec_level, u8 auth_type)
+struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
+ u8 sec_level, u8 auth_type)
{
struct hci_conn *acl;
@@ -796,22 +796,6 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
return sco;
}
-/* Create SCO, ACL or LE connection. */
-struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
- __u8 dst_type, __u8 sec_level, __u8 auth_type)
-{
- BT_DBG("%s dst %pMR type 0x%x", hdev->name, dst, type);
-
- switch (type) {
- case LE_LINK:
- return hci_connect_le(hdev, dst, dst_type, sec_level, auth_type);
- case ACL_LINK:
- return hci_connect_acl(hdev, dst, sec_level, auth_type);
- }
-
- return ERR_PTR(-EINVAL);
-}
-
/* Check link security requirement */
int hci_conn_check_link_mode(struct hci_conn *conn)
{
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 7bd78c5..308945e 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -7109,11 +7109,10 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
auth_type = l2cap_get_auth_type(chan);
if (bdaddr_type_is_le(dst_type))
- hcon = hci_connect(hdev, LE_LINK, dst, dst_type,
- chan->sec_level, auth_type);
+ hcon = hci_connect_le(hdev, dst, dst_type, chan->sec_level,
+ auth_type);
else
- hcon = hci_connect(hdev, ACL_LINK, dst, dst_type,
- chan->sec_level, auth_type);
+ hcon = hci_connect_acl(hdev, dst, chan->sec_level, auth_type);
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index cfcaf97..9fc7c1d 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2816,11 +2816,11 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
auth_type = HCI_AT_DEDICATED_BONDING_MITM;
if (cp->addr.type == BDADDR_BREDR)
- conn = hci_connect(hdev, ACL_LINK, &cp->addr.bdaddr,
- cp->addr.type, sec_level, auth_type);
+ conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
+ auth_type);
else
- conn = hci_connect(hdev, LE_LINK, &cp->addr.bdaddr,
- cp->addr.type, sec_level, auth_type);
+ conn = hci_connect_le(hdev, &cp->addr.bdaddr, cp->addr.type,
+ sec_level, auth_type);
if (IS_ERR(conn)) {
int status;
--
1.8.5.4
^ permalink raw reply related
* [PATCH 06/17] Bluetooth: Move address type conversion to outside hci_connect_le
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch moves address type conversion (L2CAP address type to HCI
address type) to outside hci_connect_le. This way, we avoid back and
forth address type conversion in a comming patch.
So hci_connect_le() now expects 'dst_type' parameter in HCI address
type convention.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_conn.c | 6 ------
net/bluetooth/l2cap_core.c | 12 ++++++++++--
net/bluetooth/mgmt.c | 16 +++++++++++++---
3 files changed, 23 insertions(+), 11 deletions(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 7fbcc7d..ccf4a4f 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -656,12 +656,6 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
if (conn)
return ERR_PTR(-EBUSY);
- /* Convert from L2CAP channel address type to HCI address type */
- if (dst_type == BDADDR_LE_PUBLIC)
- dst_type = ADDR_LE_DEV_PUBLIC;
- else
- dst_type = ADDR_LE_DEV_RANDOM;
-
/* When given an identity address with existing identity
* resolving key, the connection needs to be established
* to a resolvable random address.
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 308945e..9ce386a 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -7108,11 +7108,19 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
auth_type = l2cap_get_auth_type(chan);
- if (bdaddr_type_is_le(dst_type))
+ if (bdaddr_type_is_le(dst_type)) {
+ /* Convert from L2CAP channel address type to HCI address type
+ */
+ if (dst_type == BDADDR_LE_PUBLIC)
+ dst_type = ADDR_LE_DEV_PUBLIC;
+ else
+ dst_type = ADDR_LE_DEV_RANDOM;
+
hcon = hci_connect_le(hdev, dst, dst_type, chan->sec_level,
auth_type);
- else
+ } else {
hcon = hci_connect_acl(hdev, dst, chan->sec_level, auth_type);
+ }
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 9fc7c1d..bad23d5 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2815,12 +2815,22 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
else
auth_type = HCI_AT_DEDICATED_BONDING_MITM;
- if (cp->addr.type == BDADDR_BREDR)
+ if (cp->addr.type == BDADDR_BREDR) {
conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
auth_type);
- else
- conn = hci_connect_le(hdev, &cp->addr.bdaddr, cp->addr.type,
+ } else {
+ u8 addr_type;
+
+ /* Convert from L2CAP channel address type to HCI address type
+ */
+ if (cp->addr.type == BDADDR_LE_PUBLIC)
+ addr_type = ADDR_LE_DEV_PUBLIC;
+ else
+ addr_type = ADDR_LE_DEV_RANDOM;
+
+ conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type,
sec_level, auth_type);
+ }
if (IS_ERR(conn)) {
int status;
--
1.8.5.4
^ permalink raw reply related
* [PATCH 07/17] Bluetooth: Introduce hdev->pend_le_conn list
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch introduces the hdev->pend_le_conn list which holds the
device addresses the kernel should autonomously connect. It also
introduces some helper functions to manipulate the list.
The list and helper functions will be used by the next patch which
implements the LE auto connection infrastructure.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 7 +++++
net/bluetooth/hci_core.c | 68 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 75 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 20bdb2e..e08405d 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -284,6 +284,7 @@ struct hci_dev {
struct list_head identity_resolving_keys;
struct list_head remote_oob_data;
struct list_head le_conn_params;
+ struct list_head pend_le_conns;
struct hci_dev_stats stat;
@@ -799,6 +800,12 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
void hci_conn_params_clear(struct hci_dev *hdev);
+struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev,
+ bdaddr_t *addr, u8 addr_type);
+void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
+void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
+void hci_pend_le_conns_clear(struct hci_dev *hdev);
+
void hci_uuids_clear(struct hci_dev *hdev);
void hci_link_keys_clear(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9a078cf..142ecd8 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3259,6 +3259,72 @@ void hci_conn_params_clear(struct hci_dev *hdev)
BT_DBG("All LE connection parameters were removed");
}
+/* This function requires the caller holds hdev->lock */
+struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev,
+ bdaddr_t *addr, u8 addr_type)
+{
+ struct bdaddr_list *entry;
+
+ list_for_each_entry(entry, &hdev->pend_le_conns, list) {
+ if (bacmp(&entry->bdaddr, addr) == 0 &&
+ entry->bdaddr_type == addr_type)
+ return entry;
+ }
+
+ return NULL;
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
+{
+ struct bdaddr_list *entry;
+
+ entry = hci_pend_le_conn_lookup(hdev, addr, addr_type);
+ if (entry)
+ return;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry) {
+ BT_ERR("Out of memory");
+ return;
+ }
+
+ bacpy(&entry->bdaddr, addr);
+ entry->bdaddr_type = addr_type;
+
+ list_add(&entry->list, &hdev->pend_le_conns);
+
+ BT_DBG("addr %pMR (type %u)", addr, addr_type);
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
+{
+ struct bdaddr_list *entry;
+
+ entry = hci_pend_le_conn_lookup(hdev, addr, addr_type);
+ if (!entry)
+ return;
+
+ list_del(&entry->list);
+ kfree(entry);
+
+ BT_DBG("addr %pMR (type %u)", addr, addr_type);
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_pend_le_conns_clear(struct hci_dev *hdev)
+{
+ struct bdaddr_list *entry, *tmp;
+
+ list_for_each_entry_safe(entry, tmp, &hdev->pend_le_conns, list) {
+ list_del(&entry->list);
+ kfree(entry);
+ }
+
+ BT_DBG("All LE pending connections cleared");
+}
+
static void inquiry_complete(struct hci_dev *hdev, u8 status)
{
if (status) {
@@ -3441,6 +3507,7 @@ struct hci_dev *hci_alloc_dev(void)
INIT_LIST_HEAD(&hdev->identity_resolving_keys);
INIT_LIST_HEAD(&hdev->remote_oob_data);
INIT_LIST_HEAD(&hdev->le_conn_params);
+ INIT_LIST_HEAD(&hdev->pend_le_conns);
INIT_LIST_HEAD(&hdev->conn_hash.list);
INIT_WORK(&hdev->rx_work, hci_rx_work);
@@ -3642,6 +3709,7 @@ void hci_unregister_dev(struct hci_dev *hdev)
hci_smp_irks_clear(hdev);
hci_remote_oob_data_clear(hdev);
hci_conn_params_clear(hdev);
+ hci_pend_le_conns_clear(hdev);
hci_dev_unlock(hdev);
hci_dev_put(hdev);
--
1.8.5.4
^ permalink raw reply related
* [PATCH 08/17] Bluetooth: Introduce LE auto connection infrastructure
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch introduces the LE auto connection infrastructure which
will be used to implement the LE auto connection options.
In summary, the auto connection mechanism works as follows: Once the
first pending LE connection is created, the background scanning is
started. When the target device is found in range, the kernel
autonomously starts the connection attempt. If connection is
established successfully, that pending LE connection is deleted and
the background is stopped.
To achieve that, this patch introduces the hci_update_background_scan()
which controls the background scanning state. This function starts or
stops the background scanning based on the hdev->pend_le_conns list. If
there is no pending LE connection, the background scanning is stopped.
Otherwise, we start the background scanning.
Then, every time a pending LE connection is added we call hci_update_
background_scan() so the background scanning is started (in case it is
not already running). Likewise, every time a pending LE connection is
deleted we call hci_update_background_scan() so the background scanning
is stopped (in case this was the last pending LE connection) or it is
started again (in case we have more pending LE connections). Finally,
we also call hci_update_background_scan() in hci_le_conn_failed() so
the background scan is restarted in case the connection establishment
fails. This way the background scanning keeps running until all pending
LE connection are established.
At this point, resolvable addresses are not support by this
infrastructure. The proper support is added in upcoming patches.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 2 +
net/bluetooth/hci_conn.c | 5 +++
net/bluetooth/hci_core.c | 93 +++++++++++++++++++++++++++++++++++++++-
net/bluetooth/hci_event.c | 38 ++++++++++++++++
4 files changed, 136 insertions(+), 2 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index e08405d..617cf49 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -806,6 +806,8 @@ void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
void hci_pend_le_conns_clear(struct hci_dev *hdev);
+void hci_update_background_scan(struct hci_dev *hdev);
+
void hci_uuids_clear(struct hci_dev *hdev);
void hci_link_keys_clear(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index ccf4a4f..e79351c 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -527,6 +527,11 @@ void hci_le_conn_failed(struct hci_conn *conn, u8 status)
hci_proto_connect_cfm(conn, status);
hci_conn_del(conn);
+
+ /* Since we may have temporarily stopped the background scanning in
+ * favor of connection establishment, we should restart it.
+ */
+ hci_update_background_scan(hdev);
}
static void create_le_conn_complete(struct hci_dev *hdev, u8 status)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 142ecd8..d242217 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3281,7 +3281,7 @@ void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
entry = hci_pend_le_conn_lookup(hdev, addr, addr_type);
if (entry)
- return;
+ goto done;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry) {
@@ -3295,6 +3295,9 @@ void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
list_add(&entry->list, &hdev->pend_le_conns);
BT_DBG("addr %pMR (type %u)", addr, addr_type);
+
+done:
+ hci_update_background_scan(hdev);
}
/* This function requires the caller holds hdev->lock */
@@ -3304,12 +3307,15 @@ void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
entry = hci_pend_le_conn_lookup(hdev, addr, addr_type);
if (!entry)
- return;
+ goto done;
list_del(&entry->list);
kfree(entry);
BT_DBG("addr %pMR (type %u)", addr, addr_type);
+
+done:
+ hci_update_background_scan(hdev);
}
/* This function requires the caller holds hdev->lock */
@@ -4946,3 +4952,86 @@ 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);
}
+
+static void update_background_scan_complete(struct hci_dev *hdev, u8 status)
+{
+ if (status)
+ BT_DBG("HCI request failed to update background scanning: "
+ "status 0x%2.2x", status);
+}
+
+/* This function controls the background scanning based on hdev->pend_le_conns
+ * list. If there are pending LE connection we start the background scanning,
+ * otherwise we stop it.
+ *
+ * This function requires the caller holds hdev->lock.
+ */
+void hci_update_background_scan(struct hci_dev *hdev)
+{
+ struct hci_cp_le_set_scan_param param_cp;
+ struct hci_cp_le_set_scan_enable enable_cp;
+ struct hci_request req;
+ struct hci_conn *conn;
+ int err;
+
+ hci_req_init(&req, hdev);
+
+ if (list_empty(&hdev->pend_le_conns)) {
+ /* If there is no pending LE connections, we should stop
+ * the background scanning.
+ */
+
+ /* If controller is not scanning we are done. */
+ if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+ return;
+
+ hci_req_add_le_scan_disable(&req);
+
+ BT_DBG("%s stopping background scanning", hdev->name);
+ } else {
+ u8 own_addr_type;
+
+ /* If there is at least one pending LE connection, we should
+ * keep the background scan running.
+ */
+
+ /* If controller is already scanning we are done. */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+ return;
+
+ /* If controller is connecting, we should not start scanning
+ * since some controllers are not able to scan and connect at
+ * the same time.
+ */
+ conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
+ if (conn)
+ return;
+
+ /* Use private address since remote doesn't need to identify us.
+ * Strictly speaking, this is not required since no SCAN_REQ is
+ * sent in passive scanning.
+ */
+ if (hci_update_random_address(&req, true, &own_addr_type))
+ return;
+
+ memset(¶m_cp, 0, sizeof(param_cp));
+ param_cp.type = LE_SCAN_PASSIVE;
+ param_cp.interval = cpu_to_le16(hdev->le_scan_interval);
+ param_cp.window = cpu_to_le16(hdev->le_scan_window);
+ param_cp.own_address_type = own_addr_type;
+ hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+ ¶m_cp);
+
+ memset(&enable_cp, 0, sizeof(enable_cp));
+ enable_cp.enable = LE_SCAN_ENABLE;
+ enable_cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
+ hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+ &enable_cp);
+
+ BT_DBG("%s starting background scanning", hdev->name);
+ }
+
+ err = hci_req_run(&req, update_background_scan_complete);
+ if (err)
+ BT_ERR("Failed to run HCI request: err %d", err);
+}
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index eaa6965..b6631d7 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3677,25 +3677,63 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_proto_connect_cfm(conn, ev->status);
+ hci_pend_le_conn_del(hdev, &conn->dst, conn->dst_type);
+
unlock:
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)
+{
+ struct hci_conn *conn;
+
+ if (!hci_pend_le_conn_lookup(hdev, addr, addr_type))
+ return;
+
+ conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
+ HCI_AT_NO_BONDING);
+ if (!IS_ERR(conn))
+ return;
+
+ switch (PTR_ERR(conn)) {
+ case -EBUSY:
+ /* If hci_connect() returns -EBUSY it means there is already
+ * an LE connection attempt going on. Since controllers don't
+ * support more than one connection attempt at the time, we
+ * don't consider this an error case.
+ */
+ break;
+ default:
+ BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
+ }
+}
+
static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
u8 num_reports = skb->data[0];
void *ptr = &skb->data[1];
s8 rssi;
+ hci_dev_lock(hdev);
+
while (num_reports--) {
struct hci_ev_le_advertising_info *ev = ptr;
+ if (ev->evt_type == LE_ADV_IND ||
+ ev->evt_type == LE_ADV_DIRECT_IND)
+ check_pending_le_conn(hdev, &ev->bdaddr,
+ ev->bdaddr_type);
+
rssi = ev->data[ev->length];
mgmt_device_found(hdev, &ev->bdaddr, LE_LINK, ev->bdaddr_type,
NULL, rssi, 0, 1, ev->data, ev->length);
ptr += sizeof(*ev) + ev->length + 1;
}
+
+ hci_dev_unlock(hdev);
}
static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
--
1.8.5.4
^ permalink raw reply related
* [PATCH 09/17] Bluetooth: Introduce LE auto connect options
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch introduces the LE auto connection options: HCI_AUTO_CONN_
ALWAYS and HCI_AUTO_CONN_LINK_LOSS. Their working mechanism are
described as follows:
The HCI_AUTO_CONN_ALWAYS option configures the kernel to always re-
establish the connection, no matter the reason the connection was
terminated. This feature is required by some LE profiles such as
HID over GATT, Health Thermometer and Blood Pressure. These profiles
require the host autonomously connect to the device as soon as it
enters in connectable mode (start advertising) so the device is able
to delivery notifications or indications.
The BT_AUTO_CONN_LINK_LOSS option configures the kernel to re-
establish the connection in case the connection was terminated due
to a link loss. This feature is required by the majority of LE
profiles such as Proximity, Find Me, Cycling Speed and Cadence and
Time.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 9 ++++++++-
net/bluetooth/hci_core.c | 11 +++++++----
net/bluetooth/hci_event.c | 18 ++++++++++++++++++
3 files changed, 33 insertions(+), 5 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 617cf49..b159810 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -402,6 +402,12 @@ struct hci_conn_params {
u16 conn_min_interval;
u16 conn_max_interval;
+
+ enum {
+ HCI_AUTO_CONN_DISABLED,
+ HCI_AUTO_CONN_ALWAYS,
+ HCI_AUTO_CONN_LINK_LOSS,
+ } auto_connect;
};
extern struct list_head hci_dev_list;
@@ -796,7 +802,8 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
bdaddr_t *addr, u8 addr_type);
void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
- u16 conn_min_interval, u16 conn_max_interval);
+ u8 auto_connect, u16 conn_min_interval,
+ u16 conn_max_interval);
void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
void hci_conn_params_clear(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index d242217..7b4f315 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3202,7 +3202,8 @@ struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
/* This function requires the caller holds hdev->lock */
void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
- u16 conn_min_interval, u16 conn_max_interval)
+ u8 auto_connect, u16 conn_min_interval,
+ u16 conn_max_interval)
{
struct hci_conn_params *params;
@@ -3210,6 +3211,7 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
if (params) {
params->conn_min_interval = conn_min_interval;
params->conn_max_interval = conn_max_interval;
+ params->auto_connect = auto_connect;
return;
}
@@ -3223,12 +3225,13 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
params->addr_type = addr_type;
params->conn_min_interval = conn_min_interval;
params->conn_max_interval = conn_max_interval;
+ params->auto_connect = auto_connect;
list_add(¶ms->list, &hdev->le_conn_params);
- BT_DBG("addr %pMR (type %u) conn_min_interval 0x%.4x "
- "conn_max_interval 0x%.4x", addr, addr_type, conn_min_interval,
- conn_max_interval);
+ BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x "
+ "conn_max_interval 0x%.4x", addr, addr_type, auto_connect,
+ conn_min_interval, conn_max_interval);
}
/* This function requires the caller holds hdev->lock */
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b6631d7..46da8b6 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1841,6 +1841,7 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_disconn_complete *ev = (void *) skb->data;
u8 reason = hci_to_mgmt_reason(ev->reason);
+ struct hci_conn_params *params;
struct hci_conn *conn;
bool mgmt_connected;
u8 type;
@@ -1868,6 +1869,23 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
if (conn->type == ACL_LINK && conn->flush_key)
hci_remove_link_key(hdev, &conn->dst);
+ params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+ if (params) {
+ switch (params->auto_connect) {
+ case HCI_AUTO_CONN_LINK_LOSS:
+ if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
+ break;
+ /* Fall through */
+
+ case HCI_AUTO_CONN_ALWAYS:
+ hci_pend_le_conn_add(hdev, &conn->dst, conn->dst_type);
+ break;
+
+ default:
+ break;
+ }
+ }
+
type = conn->type;
hci_proto_disconn_cfm(conn, ev->reason);
--
1.8.5.4
^ permalink raw reply related
* [PATCH 10/17] Bluetooth: Connection parameters and auto connection
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch modifies hci_conn_params_add() and hci_conn_params_del() so
they also add/delete pending LE connections according to the auto_
connect option. This way, background scan is automatically triggered/
untriggered when connection parameters are added/removed.
For instance, when a new connection parameters with HCI_AUTO_CONN_ALWAYS
option is added and we are not connected to the device, we add a pending
LE connection for that device.
Likewise, when the connection parameters are updated we add or delete
a pending LE connection according to its new auto_connect option.
Finally, when the connection parameter is deleted we also delete the
pending LE connection (if any).
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_core.c | 42 +++++++++++++++++++++++++++++++++++-------
1 file changed, 35 insertions(+), 7 deletions(-)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 7b4f315..82042d3 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3200,6 +3200,23 @@ struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
return NULL;
}
+static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
+{
+ struct hci_conn *conn;
+
+ conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
+ if (!conn)
+ return false;
+
+ if (conn->dst_type != type)
+ return false;
+
+ if (conn->state != BT_CONNECTED)
+ return false;
+
+ return true;
+}
+
/* This function requires the caller holds hdev->lock */
void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
u8 auto_connect, u16 conn_min_interval,
@@ -3208,12 +3225,8 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
struct hci_conn_params *params;
params = hci_conn_params_lookup(hdev, addr, addr_type);
- if (params) {
- params->conn_min_interval = conn_min_interval;
- params->conn_max_interval = conn_max_interval;
- params->auto_connect = auto_connect;
- return;
- }
+ if (params)
+ goto update;
params = kzalloc(sizeof(*params), GFP_KERNEL);
if (!params) {
@@ -3223,11 +3236,24 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
bacpy(¶ms->addr, addr);
params->addr_type = addr_type;
+
+ list_add(¶ms->list, &hdev->le_conn_params);
+
+update:
params->conn_min_interval = conn_min_interval;
params->conn_max_interval = conn_max_interval;
params->auto_connect = auto_connect;
- list_add(¶ms->list, &hdev->le_conn_params);
+ switch (auto_connect) {
+ case HCI_AUTO_CONN_DISABLED:
+ case HCI_AUTO_CONN_LINK_LOSS:
+ hci_pend_le_conn_del(hdev, addr, addr_type);
+ break;
+ case HCI_AUTO_CONN_ALWAYS:
+ if (!is_connected(hdev, addr, addr_type))
+ hci_pend_le_conn_add(hdev, addr, addr_type);
+ break;
+ }
BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x "
"conn_max_interval 0x%.4x", addr, addr_type, auto_connect,
@@ -3243,6 +3269,8 @@ void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
if (!params)
return;
+ hci_pend_le_conn_del(hdev, addr, addr_type);
+
list_del(¶ms->list);
kfree(params);
--
1.8.5.4
^ permalink raw reply related
* [PATCH 11/17] Bluetooth: Temporarily stop background scanning on discovery
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
If the user sends a mgmt start discovery command while the background
scanning is running, we should temporarily stop it. Once the discovery
finishes, we start the background scanning again.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_core.c | 2 ++
net/bluetooth/mgmt.c | 12 ++++++------
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 82042d3..3c985f2 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1786,6 +1786,8 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
switch (state) {
case DISCOVERY_STOPPED:
+ hci_update_background_scan(hdev);
+
if (hdev->discovery.state != DISCOVERY_STARTING)
mgmt_discovering(hdev, 0);
break;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index bad23d5..a62e22c 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3439,12 +3439,12 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
goto failed;
}
- if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
- err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
- MGMT_STATUS_BUSY);
- mgmt_pending_remove(cmd);
- goto failed;
- }
+ /* If controller is scanning, it means the background scanning
+ * is running. Thus, we should temporarily stop it in order to
+ * set the discovery scanning parameters.
+ */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+ hci_req_add_le_scan_disable(&req);
memset(¶m_cp, 0, sizeof(param_cp));
--
1.8.5.4
^ permalink raw reply related
* [PATCH 12/17] Bluetooth: Auto connection and power on
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
When hdev is closed (e.g. Mgmt power off command, RFKILL or controller
is reset), the ongoing active connections are silently dropped by the
controller (no Disconnection Complete Event is sent to host). For that
reason, the devices that require HCI_AUTO_CONN_ALWAYS are not added to
hdev->pend_le_conns list and they won't auto connect.
So to fix this issue, during hdev closing, we remove all pending LE
connections. After adapter is powered on, we add a pending LE connection
for each HCI_AUTO_CONN_ALWAYS address.
This way, the auto connection mechanism works propely after a power
off and power on sequence as well as RFKILL block/unblock.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_core.c | 1 +
net/bluetooth/mgmt.c | 13 +++++++++++++
2 files changed, 14 insertions(+)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 3c985f2..692637b 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2266,6 +2266,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
hci_dev_lock(hdev);
hci_inquiry_cache_flush(hdev);
hci_conn_hash_flush(hdev);
+ hci_pend_le_conns_clear(hdev);
hci_dev_unlock(hdev);
hci_notify(hdev, HCI_DEV_DOWN);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a62e22c..f878267 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4669,6 +4669,17 @@ void mgmt_index_removed(struct hci_dev *hdev)
mgmt_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, NULL);
}
+/* This function requires the caller holds hdev->lock */
+static void restart_le_auto_conns(struct hci_dev *hdev)
+{
+ struct hci_conn_params *p;
+
+ list_for_each_entry(p, &hdev->le_conn_params, list) {
+ if (p->auto_connect == HCI_AUTO_CONN_ALWAYS)
+ hci_pend_le_conn_add(hdev, &p->addr, p->addr_type);
+ }
+}
+
static void powered_complete(struct hci_dev *hdev, u8 status)
{
struct cmd_lookup match = { NULL, hdev };
@@ -4677,6 +4688,8 @@ static void powered_complete(struct hci_dev *hdev, u8 status)
hci_dev_lock(hdev);
+ restart_le_auto_conns(hdev);
+
mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
new_settings(hdev, match.sk);
--
1.8.5.4
^ permalink raw reply related
* [PATCH 13/17] Bluetooth: Connection parameters and resolvable address
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
We should only add connection parameters for public, random static and
random private resolvable with IRK. If we allow non-resolvable or
resolvable without IRK, the background scan may run indefinitely. So, to
avoid this undesired behavior, we should check the address type in
hci_conn_params_add().
Additionally, since the IRK is removed during unpair, we should also
remove the connection parameters from that device.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 18 +++++++++++++++---
net/bluetooth/hci_core.c | 24 ++++++++++++++++++++----
net/bluetooth/mgmt.c | 2 ++
3 files changed, 37 insertions(+), 7 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index b159810..e0e0eab 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -801,9 +801,9 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
bdaddr_t *addr, u8 addr_type);
-void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
- u8 auto_connect, u16 conn_min_interval,
- u16 conn_max_interval);
+int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
+ u8 auto_connect, u16 conn_min_interval,
+ u16 conn_max_interval);
void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
void hci_conn_params_clear(struct hci_dev *hdev);
@@ -1119,6 +1119,18 @@ static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
return false;
}
+/* Check if address is "random private non-resolvable" type */
+static inline bool hci_bdaddr_is_non_rpa(bdaddr_t *bdaddr, u8 addr_type)
+{
+ if (addr_type != 0x01)
+ return false;
+
+ if ((bdaddr->b[5] & 0xc0) == 0x00)
+ return true;
+
+ return false;
+}
+
static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
bdaddr_t *bdaddr, u8 addr_type)
{
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 692637b..e17ea87 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3221,12 +3221,26 @@ static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
}
/* This function requires the caller holds hdev->lock */
-void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
- u8 auto_connect, u16 conn_min_interval,
- u16 conn_max_interval)
+int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
+ u8 auto_connect, u16 conn_min_interval,
+ u16 conn_max_interval)
{
struct hci_conn_params *params;
+ if (hci_bdaddr_is_non_rpa(addr, addr_type))
+ return -EINVAL;
+
+ if (hci_bdaddr_is_rpa(addr, addr_type)) {
+ struct smp_irk *irk;
+
+ irk = hci_get_irk(hdev, addr, addr_type);
+ if (!irk)
+ return -EINVAL;
+
+ addr = &irk->bdaddr;
+ addr_type = irk->addr_type;
+ }
+
params = hci_conn_params_lookup(hdev, addr, addr_type);
if (params)
goto update;
@@ -3234,7 +3248,7 @@ void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
params = kzalloc(sizeof(*params), GFP_KERNEL);
if (!params) {
BT_ERR("Out of memory");
- return;
+ return -ENOMEM;
}
bacpy(¶ms->addr, addr);
@@ -3261,6 +3275,8 @@ update:
BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x "
"conn_max_interval 0x%.4x", addr, addr_type, auto_connect,
conn_min_interval, conn_max_interval);
+
+ return 0;
}
/* This function requires the caller holds hdev->lock */
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f878267..2e6564e 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2416,6 +2416,8 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type);
+ hci_conn_params_del(hdev, &cp->addr.bdaddr, addr_type);
+
err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type);
}
--
1.8.5.4
^ permalink raw reply related
* [PATCH 14/17] Bluetooth: Support resolvable private addresses
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
Only identity addresses are inserted into hdev->pend_le_conns. So,
in order to support resolvable private addresses in auto connection
mechanism, we should resolve the address before checking for pending
connections.
Thus, this patch adds an extra check in check_pending_le_conn() and
updates 'addr' and 'addr_type' variables before hci_pend_le_conn_
lookup().
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_event.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 46da8b6..cda92db 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3706,6 +3706,16 @@ static void check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr,
u8 addr_type)
{
struct hci_conn *conn;
+ struct smp_irk *irk;
+
+ /* If this is a resolvable address, we should resolve it and then
+ * update address and address type variables.
+ */
+ irk = hci_get_irk(hdev, addr, addr_type);
+ if (irk) {
+ addr = &irk->bdaddr;
+ addr_type = irk->addr_type;
+ }
if (!hci_pend_le_conn_lookup(hdev, addr, addr_type))
return;
--
1.8.5.4
^ permalink raw reply related
* [PATCH 15/17] Bluetooth: Add le_auto_conn file on debugfs
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patch adds to debugfs the le_auto_conn file. This file will be
used to test LE auto connection infrastructure.
To add a new auto connection address we write on le_auto_conn file
following the format <address> <address type> <auto_connect>.
The <address type> values are:
* 0 for public address
* 1 for random address
The <auto_connect> values are (for more details see struct hci_
conn_params):
* 0 for disabled
* 1 for always
* 2 for link loss
So for instance, if you want the kernel autonomously establishes
connections with device AA:BB:CC:DD:EE:FF (public address) every
time the device enters in connectable mode (starts advertising),
you should run the command:
$ echo "AA:BB:CC:DD:EE:FF 0 1" > /sys/kernel/debug/bluetooth/hci0/le_auto_conn
To get the list of connection parameters configured in kernel, read
the le_auto_conn file:
$ cat /sys/kernel/debug/bluetooth/hci0/le_auto_conn
Finally, to clear the connection parameters list, write an empty
string:
$ echo "" > /sys/kernel/debug/bluetooth/hci0/le_auto_conn
This file is created only if LE is enabled.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_core.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e17ea87..fb4c961 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -896,6 +896,96 @@ static const struct file_operations lowpan_debugfs_fops = {
.llseek = default_llseek,
};
+static int le_auto_conn_show(struct seq_file *sf, void *ptr)
+{
+ struct hci_dev *hdev = sf->private;
+ struct hci_conn_params *p;
+
+ hci_dev_lock(hdev);
+
+ list_for_each_entry(p, &hdev->le_conn_params, list) {
+ seq_printf(sf, "%pMR %u %u\n", &p->addr, p->addr_type,
+ p->auto_connect);
+ }
+
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int le_auto_conn_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, le_auto_conn_show, inode->i_private);
+}
+
+static ssize_t le_auto_conn_write(struct file *file, const char __user *data,
+ size_t count, loff_t *offset)
+{
+ struct seq_file *sf = file->private_data;
+ struct hci_dev *hdev = sf->private;
+ u8 auto_connect;
+ bdaddr_t addr;
+ u8 addr_type;
+ char *buf;
+ int err;
+ int n;
+
+ /* Don't allow partial write */
+ if (*offset != 0)
+ return -EINVAL;
+
+ /* If empty string, clear the connection parameters and pending LE
+ * connection list.
+ */
+ if (count == 1) {
+ hci_dev_lock(hdev);
+ hci_conn_params_clear(hdev);
+ hci_pend_le_conns_clear(hdev);
+ hci_update_background_scan(hdev);
+ hci_dev_unlock(hdev);
+ return count;
+ }
+
+ buf = kzalloc(count, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ if (copy_from_user(buf, data, count)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+
+ n = sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu %hhu", &addr.b[5],
+ &addr.b[4], &addr.b[3], &addr.b[2], &addr.b[1], &addr.b[0],
+ &addr_type, &auto_connect);
+ if (n != 8) {
+ kfree(buf);
+ return -EINVAL;
+ }
+
+ hci_dev_lock(hdev);
+ err = hci_conn_params_add(hdev, &addr, addr_type, auto_connect,
+ hdev->le_conn_min_interval,
+ hdev->le_conn_max_interval);
+ hci_dev_unlock(hdev);
+
+ if (err) {
+ kfree(buf);
+ return err;
+ }
+
+ kfree(buf);
+ return count;
+}
+
+static const struct file_operations le_auto_conn_fops = {
+ .open = le_auto_conn_open,
+ .read = seq_read,
+ .write = le_auto_conn_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
/* ---- HCI requests ---- */
static void hci_req_sync_complete(struct hci_dev *hdev, u8 result)
@@ -1694,6 +1784,8 @@ static int __hci_init(struct hci_dev *hdev)
hdev, &adv_channel_map_fops);
debugfs_create_file("6lowpan", 0644, hdev->debugfs, hdev,
&lowpan_debugfs_fops);
+ debugfs_create_file("le_auto_conn", 0644, hdev->debugfs, hdev,
+ &le_auto_conn_fops);
}
return 0;
--
1.8.5.4
^ permalink raw reply related
* [PATCH 16/17] Bluetooth: Create hci_req_add_le_passive_scan helper
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
This patches creates the hci_req_add_le_passive_scan helper so it can
be re-used in the next patch.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
net/bluetooth/hci_core.c | 54 +++++++++++++++++++++++++++---------------------
1 file changed, 30 insertions(+), 24 deletions(-)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index fb4c961..e776624 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -5095,6 +5095,35 @@ void hci_req_add_le_scan_disable(struct hci_request *req)
hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
}
+static void hci_req_add_le_passive_scan(struct hci_request *req,
+ struct hci_dev *hdev)
+{
+ struct hci_cp_le_set_scan_param param_cp;
+ struct hci_cp_le_set_scan_enable enable_cp;
+ u8 own_addr_type;
+
+ /* Use private address since remote doesn't need to identify us.
+ * Strictly speaking, this is not required since no SCAN_REQ is
+ * sent in passive scanning.
+ */
+ if (hci_update_random_address(req, true, &own_addr_type))
+ return;
+
+ memset(¶m_cp, 0, sizeof(param_cp));
+ param_cp.type = LE_SCAN_PASSIVE;
+ param_cp.interval = cpu_to_le16(hdev->le_scan_interval);
+ param_cp.window = cpu_to_le16(hdev->le_scan_window);
+ param_cp.own_address_type = own_addr_type;
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+ ¶m_cp);
+
+ memset(&enable_cp, 0, sizeof(enable_cp));
+ enable_cp.enable = LE_SCAN_ENABLE;
+ enable_cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+ &enable_cp);
+}
+
static void update_background_scan_complete(struct hci_dev *hdev, u8 status)
{
if (status)
@@ -5110,8 +5139,6 @@ static void update_background_scan_complete(struct hci_dev *hdev, u8 status)
*/
void hci_update_background_scan(struct hci_dev *hdev)
{
- struct hci_cp_le_set_scan_param param_cp;
- struct hci_cp_le_set_scan_enable enable_cp;
struct hci_request req;
struct hci_conn *conn;
int err;
@@ -5131,8 +5158,6 @@ void hci_update_background_scan(struct hci_dev *hdev)
BT_DBG("%s stopping background scanning", hdev->name);
} else {
- u8 own_addr_type;
-
/* If there is at least one pending LE connection, we should
* keep the background scan running.
*/
@@ -5149,26 +5174,7 @@ void hci_update_background_scan(struct hci_dev *hdev)
if (conn)
return;
- /* Use private address since remote doesn't need to identify us.
- * Strictly speaking, this is not required since no SCAN_REQ is
- * sent in passive scanning.
- */
- if (hci_update_random_address(&req, true, &own_addr_type))
- return;
-
- memset(¶m_cp, 0, sizeof(param_cp));
- param_cp.type = LE_SCAN_PASSIVE;
- param_cp.interval = cpu_to_le16(hdev->le_scan_interval);
- param_cp.window = cpu_to_le16(hdev->le_scan_window);
- param_cp.own_address_type = own_addr_type;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
- ¶m_cp);
-
- memset(&enable_cp, 0, sizeof(enable_cp));
- enable_cp.enable = LE_SCAN_ENABLE;
- enable_cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
- &enable_cp);
+ hci_req_add_le_passive_scan(&req, hdev);
BT_DBG("%s starting background scanning", hdev->name);
}
--
1.8.5.4
^ permalink raw reply related
* [PATCH 17/17] Bluetooth: Update background scan parameters
From: Andre Guedes @ 2014-02-25 21:01 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1393362104-12175-1-git-send-email-andre.guedes@openbossa.org>
If new scanning parameters are set while background scan is running,
we should restart background scanning so these parameters are updated.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
---
include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/hci_core.c | 26 ++++++++++++++++++++++++++
net/bluetooth/mgmt.c | 7 +++++++
3 files changed, 34 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index e0e0eab..8f0ddc8 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -814,6 +814,7 @@ void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
void hci_pend_le_conns_clear(struct hci_dev *hdev);
void hci_update_background_scan(struct hci_dev *hdev);
+void hci_restart_background_scan(struct hci_dev *hdev);
void hci_uuids_clear(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e776624..f5c0e97 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -5183,3 +5183,29 @@ void hci_update_background_scan(struct hci_dev *hdev)
if (err)
BT_ERR("Failed to run HCI request: err %d", err);
}
+
+static void restart_background_scan_complete(struct hci_dev *hdev, u8 status)
+{
+ if (status)
+ BT_DBG("HCI request failed to restart background scan: "
+ "status 0x%2.2x", status);
+}
+
+void hci_restart_background_scan(struct hci_dev *hdev)
+{
+ struct hci_request req;
+ int err;
+
+ hci_req_init(&req, hdev);
+
+ hci_req_add_le_scan_disable(&req);
+ hci_req_add_le_passive_scan(&req, hdev);
+
+ err = hci_req_run(&req, restart_background_scan_complete);
+ if (err) {
+ BT_ERR("Failed to run HCI request: err %d", err);
+ return;
+ }
+
+ BT_DBG("%s re-starting background scanning", hdev->name);
+}
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 2e6564e..08d52f2 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3924,6 +3924,13 @@ static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
err = cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, NULL, 0);
+ /* If background scan is running, restart it so new parameters are
+ * loaded.
+ */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags) &&
+ hdev->discovery.state == DISCOVERY_STOPPED)
+ hci_restart_background_scan(hdev);
+
hci_dev_unlock(hdev);
return err;
--
1.8.5.4
^ permalink raw reply related
* [PATCH 00/17] Test and fix for cancel discovery
From: Lukasz Rymanowski @ 2014-02-26 1:57 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Lukasz Rymanowski
This patch series is to show and fix one single issue found on UPF.
Issue is that cancel discovery does not work as designed when there
is a lot of remote devices in piscan mode.
To write testcase for this scenario, new way of handle inquiry
command has been introduced in btdev.
Also abstraction for timeout has be introduced to give btdev
possibility to schedule "inquiry session"
I'm aware that testcase will have to be rebased after
fixes for android-tester will hit the tree. Hopefully it will
me more stable then as well.
I have not run any other testers than android one, so I don't
know yet how changes in btdev influence on it.
Patches tested with btvirt (mainloop support) and android-tester
(glib support)
Lukasz Rymanowski (17):
monitor: Allow to modify epoll even events are the same
monitor: Use miliseconds instead of seconds in the timeout
shared: Add header for timeout abstraction
shared: Add timeout handling with Glib support
shared: Add timeout handling with mainloop support
emulator: Minor style fix
emulator: Use timeout for sending inquiry results
emulator: Add inquiry cancel
emulator: Add handling inquiry number of responses
emulator: Add handling inquiry_lenght from inquiry command
emulator: Add support to create many remote devices in hciemu
android/tester: Add discovery cancel test
android/tester: Remove not needed hook for inquiry complete
android/tester: Increase timeout for test failure
android: Add tracking for pending confirm name command
android: Cancel all pending confirm name before stop discovery
android: Send confirm name request with mgmt_send
Makefile.tools | 19 ++++--
android/Makefile.am | 2 +
android/android-tester.c | 116 +++++++++++++++++++++++++++++----
android/bluetooth.c | 43 ++++++++++--
emulator/btdev.c | 148 ++++++++++++++++++++++++++++++++++++++----
monitor/mainloop.c | 22 +++----
monitor/mainloop.h | 4 +-
src/shared/hciemu.c | 63 ++++++++++++++++++
src/shared/hciemu.h | 11 ++++
src/shared/timeout-glib.c | 73 +++++++++++++++++++++
src/shared/timeout-mainloop.c | 78 ++++++++++++++++++++++
src/shared/timeout.h | 27 ++++++++
tools/3dsp.c | 2 +-
tools/btinfo.c | 2 +-
14 files changed, 561 insertions(+), 49 deletions(-)
create mode 100644 src/shared/timeout-glib.c
create mode 100644 src/shared/timeout-mainloop.c
create mode 100644 src/shared/timeout.h
--
1.8.4
^ permalink raw reply
* [PATCH 01/17] monitor: Allow to modify epoll even events are the same
From: Lukasz Rymanowski @ 2014-02-26 1:57 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Lukasz Rymanowski
In-Reply-To: <1393379848-4031-1-git-send-email-lukasz.rymanowski@tieto.com>
This is epsecially needed when we want to modify timer.
---
monitor/mainloop.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/monitor/mainloop.c b/monitor/mainloop.c
index 8c94bfe..7f97e65 100644
--- a/monitor/mainloop.c
+++ b/monitor/mainloop.c
@@ -222,9 +222,6 @@ int mainloop_modify_fd(int fd, uint32_t events)
if (!data)
return -ENXIO;
- if (data->events == events)
- return 0;
-
memset(&ev, 0, sizeof(ev));
ev.events = events;
ev.data.ptr = data;
--
1.8.4
^ permalink raw reply related
* [PATCH 02/17] monitor: Use miliseconds instead of seconds in the timeout
From: Lukasz Rymanowski @ 2014-02-26 1:57 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Lukasz Rymanowski
In-Reply-To: <1393379848-4031-1-git-send-email-lukasz.rymanowski@tieto.com>
---
monitor/mainloop.c | 19 ++++++++++---------
monitor/mainloop.h | 4 ++--
tools/3dsp.c | 2 +-
tools/btinfo.c | 2 +-
4 files changed, 14 insertions(+), 13 deletions(-)
diff --git a/monitor/mainloop.c b/monitor/mainloop.c
index 7f97e65..8d4b391 100644
--- a/monitor/mainloop.c
+++ b/monitor/mainloop.c
@@ -287,20 +287,21 @@ static void timeout_callback(int fd, uint32_t events, void *user_data)
data->callback(data->fd, data->user_data);
}
-static inline int timeout_set(int fd, unsigned int seconds)
+static inline int timeout_set(int fd, unsigned int msec)
{
struct itimerspec itimer;
+ unsigned int sec = msec / 1000;
memset(&itimer, 0, sizeof(itimer));
itimer.it_interval.tv_sec = 0;
itimer.it_interval.tv_nsec = 0;
- itimer.it_value.tv_sec = seconds;
- itimer.it_value.tv_nsec = 0;
+ itimer.it_value.tv_sec = sec;
+ itimer.it_value.tv_nsec = (msec - (sec * 1000)) * 1000;
return timerfd_settime(fd, 0, &itimer, NULL);
}
-int mainloop_add_timeout(unsigned int seconds, mainloop_timeout_func callback,
+int mainloop_add_timeout(unsigned int msec, mainloop_timeout_func callback,
void *user_data, mainloop_destroy_func destroy)
{
struct timeout_data *data;
@@ -323,8 +324,8 @@ int mainloop_add_timeout(unsigned int seconds, mainloop_timeout_func callback,
return -EIO;
}
- if (seconds > 0) {
- if (timeout_set(data->fd, seconds) < 0) {
+ if (msec > 0) {
+ if (timeout_set(data->fd, msec) < 0) {
close(data->fd);
free(data);
return -EIO;
@@ -341,10 +342,10 @@ int mainloop_add_timeout(unsigned int seconds, mainloop_timeout_func callback,
return data->fd;
}
-int mainloop_modify_timeout(int id, unsigned int seconds)
+int mainloop_modify_timeout(int id, unsigned int msec)
{
- if (seconds > 0) {
- if (timeout_set(id, seconds) < 0)
+ if (msec > 0) {
+ if (timeout_set(id, msec) < 0)
return -EIO;
}
diff --git a/monitor/mainloop.h b/monitor/mainloop.h
index d36f5aa..dafec8b 100644
--- a/monitor/mainloop.h
+++ b/monitor/mainloop.h
@@ -40,9 +40,9 @@ int mainloop_add_fd(int fd, uint32_t events, mainloop_event_func callback,
int mainloop_modify_fd(int fd, uint32_t events);
int mainloop_remove_fd(int fd);
-int mainloop_add_timeout(unsigned int seconds, mainloop_timeout_func callback,
+int mainloop_add_timeout(unsigned int msec, mainloop_timeout_func callback,
void *user_data, mainloop_destroy_func destroy);
-int mainloop_modify_timeout(int fd, unsigned int seconds);
+int mainloop_modify_timeout(int fd, unsigned int msec);
int mainloop_remove_timeout(int id);
int mainloop_set_signal(sigset_t *mask, mainloop_signal_func callback,
diff --git a/tools/3dsp.c b/tools/3dsp.c
index d1b17f2..fc5c8e6 100644
--- a/tools/3dsp.c
+++ b/tools/3dsp.c
@@ -66,7 +66,7 @@ static void shutdown_device(void)
bt_hci_flush(hci_dev);
if (reset_on_shutdown) {
- id = mainloop_add_timeout(5, shutdown_timeout, NULL, NULL);
+ id = mainloop_add_timeout(5000, shutdown_timeout, NULL, NULL);
bt_hci_send(hci_dev, BT_HCI_CMD_RESET, NULL, 0,
shutdown_complete, UINT_TO_PTR(id), NULL);
diff --git a/tools/btinfo.c b/tools/btinfo.c
index 7951808..6693132 100644
--- a/tools/btinfo.c
+++ b/tools/btinfo.c
@@ -109,7 +109,7 @@ static void shutdown_device(void)
bt_hci_flush(hci_dev);
if (reset_on_shutdown) {
- id = mainloop_add_timeout(5, shutdown_timeout, NULL, NULL);
+ id = mainloop_add_timeout(5000, shutdown_timeout, NULL, NULL);
bt_hci_send(hci_dev, BT_HCI_CMD_RESET, NULL, 0,
shutdown_complete, UINT_TO_PTR(id), NULL);
--
1.8.4
^ permalink raw reply related
* [PATCH 03/17] shared: Add header for timeout abstraction
From: Lukasz Rymanowski @ 2014-02-26 1:57 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Lukasz Rymanowski
In-Reply-To: <1393379848-4031-1-git-send-email-lukasz.rymanowski@tieto.com>
---
src/shared/timeout.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 src/shared/timeout.h
diff --git a/src/shared/timeout.h b/src/shared/timeout.h
new file mode 100644
index 0000000..c13616f
--- /dev/null
+++ b/src/shared/timeout.h
@@ -0,0 +1,27 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2014 Intel Corporation. All rights reserved.
+ *
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ */
+
+#include <stdbool.h>
+
+typedef bool (*timeout_func_t)(void *user_data);
+typedef void (*timeout_destroy_func_t)(void *user_data);
+
+int timeout_add(unsigned int msec, timeout_func_t func, void *user_data,
+ timeout_destroy_func_t destroy);
+void timeout_remove(unsigned int id);
--
1.8.4
^ permalink raw reply related
* [PATCH 04/17] shared: Add timeout handling with Glib support
From: Lukasz Rymanowski @ 2014-02-26 1:57 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Lukasz Rymanowski
In-Reply-To: <1393379848-4031-1-git-send-email-lukasz.rymanowski@tieto.com>
---
src/shared/timeout-glib.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 src/shared/timeout-glib.c
diff --git a/src/shared/timeout-glib.c b/src/shared/timeout-glib.c
new file mode 100644
index 0000000..c045efc
--- /dev/null
+++ b/src/shared/timeout-glib.c
@@ -0,0 +1,73 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2014 Intel Corporation. All rights reserved.
+ *
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ */
+
+#include "timeout.h"
+
+#include <glib.h>
+
+struct timeout_data {
+ timeout_func_t func;
+ timeout_destroy_func_t destroy;
+ void *user_data;
+};
+
+static gboolean timeout_callback(gpointer user_data)
+{
+ struct timeout_data *data = user_data;
+
+ if (data->func(data->user_data))
+ return TRUE;
+
+ return FALSE;
+}
+
+static void timeout_destroy(gpointer user_data)
+{
+ struct timeout_data *data = user_data;
+
+ if (data->destroy)
+ data->destroy(data->user_data);
+
+ g_free(data);
+}
+
+int timeout_add(unsigned int ms, timeout_func_t func, void *user_data,
+ timeout_destroy_func_t destroy)
+{
+ guint id;
+ struct timeout_data *data = g_malloc0(sizeof(*data));
+
+ data->func = func;
+ data->destroy = destroy;
+ data->user_data = user_data;
+
+ id = g_timeout_add_full(G_PRIORITY_DEFAULT, ms, timeout_callback, data,
+ timeout_destroy);
+ if (!id)
+ g_free(data);
+
+ return id;
+}
+
+void timeout_remove(unsigned int id)
+{
+ GSource *source = g_main_context_find_source_by_id(NULL, id);
+ if (source)
+ g_source_destroy(source);
+}
--
1.8.4
^ permalink raw reply related
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