[PATCH BlueZ 00/14] LE General Connection Establishment procedure

[PATCH BlueZ 00/14] LE General Connection Establishment procedure

[João Paulo Rechi Vita]

This series implement the LE General Connection Establishment procedure
for LE connections.

If there are LE bonded devices marked for auto connection they are added
to a connect_list on the adapter. When there is any device on this list
scan is performed continuously. When a device is found the connect_list
is checked. If that device is on the list scan is stopped and a
connection attempt is made to that device.

If any client tries to perform discovery and the scan for the General
Connection Establishment procedure is active, the discovery request is
queued and performed right after the GCEP scan session finishes.

This series changes quite a lot the LE connection logic, but we've been
testing and using this code at INdT for about 4 weeks. Any comments and
more testing are appreciated.

Claudio Takahasi (7):
  core: Control connections based on adapter state
  mgmt: Add LE scanning callback
  core: Replace interleaved by LE scanning
  core: Start LE scanning when a device requests
  core: Remove leftover define
  core: Queue discovery if scanning is active
  core: Re-connect for ECONNRESET or ECONNABORTED

João Paulo Rechi Vita (5):
  mgmt: print error message when start_discovery fails
  core: add compare function for bdaddr in a struct btd_device
  core: Add a list of LE devices to connect
  core: use adapter connect list for LE connections
  core: mutually exclude concurrent connections

Paulo Alcantara (1):
  core: Disable unnecessary auto connections

Vinicius Costa Gomes (1):
  test: Fix exiting the bus when a discovery session ends

 src/adapter.c       |  192 ++++++++++++++++++++++++++++++++++++++++++++-------
 src/adapter.h       |    2 +
 src/device.c        |   65 ++++++++---------
 src/device.h        |    2 +
 src/mgmt.c          |   39 ++++++++++-
 src/mgmt.h          |    1 +
 test/test-discovery |    8 ---
 7 files changed, 239 insertions(+), 70 deletions(-)

-- 
1.7.10.4

[PATCH BlueZ 01/14] core: Control connections based on adapter state

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patch disable automatic ATTIO connections when the adapter is
powered down and enable automatic connection when the adapter is powered
on.
---
 src/adapter.c |   25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index 8820e27..c9c82e3 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -2083,6 +2083,14 @@ static int get_pairable_timeout(const char *src)
 	return main_opts.pairto;
 }
 
+static void set_auto_connect(gpointer data, gpointer user_data)
+{
+	struct btd_device *device = data;
+	gboolean enable = GPOINTER_TO_INT(user_data);
+
+	device_set_auto_connect(device, enable);
+}
+
 static void call_adapter_powered_callbacks(struct btd_adapter *adapter,
 						gboolean powered)
 {
@@ -2092,7 +2100,10 @@ static void call_adapter_powered_callbacks(struct btd_adapter *adapter,
 		btd_adapter_powered_cb cb = l->data;
 
 		cb(adapter, powered);
-       }
+	}
+
+	g_slist_foreach(adapter->devices, set_auto_connect,
+						GINT_TO_POINTER(powered));
 }
 
 static void emit_device_disappeared(gpointer data, gpointer user_data)
@@ -3292,15 +3303,10 @@ static gboolean disable_auto(gpointer user_data)
 	return FALSE;
 }
 
-static void set_auto_connect(gpointer data, gpointer user_data)
-{
-	struct btd_device *device = data;
-
-	device_set_auto_connect(device, TRUE);
-}
-
 void btd_adapter_enable_auto_connect(struct btd_adapter *adapter)
 {
+	gboolean enable = TRUE;
+
 	if (!adapter->up)
 		return;
 
@@ -3309,7 +3315,8 @@ void btd_adapter_enable_auto_connect(struct btd_adapter *adapter)
 	if (adapter->auto_timeout_id)
 		return;
 
-	g_slist_foreach(adapter->devices, set_auto_connect, NULL);
+	g_slist_foreach(adapter->devices, set_auto_connect,
+						GINT_TO_POINTER(enable));
 
 	adapter->auto_timeout_id = g_timeout_add_seconds(main_opts.autoto,
 						disable_auto, adapter);
-- 
1.7.10.4

[PATCH BlueZ 02/14] mgmt: print error message when start_discovery fails

[João Paulo Rechi Vita]

If we fail to communicate with the MGMT socket is better to print the
error message on the mgmtops plugin, where it really happened, instead
of leaving this job to its users.
---
 src/adapter.c |    6 +-----
 src/mgmt.c    |    7 +++++--
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index c9c82e3..5dd9821 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -997,13 +997,9 @@ struct btd_device *adapter_get_device(DBusConnection *conn,
 static gboolean discovery_cb(gpointer user_data)
 {
 	struct btd_adapter *adapter = user_data;
-	int err;
 
 	adapter->discov_id = 0;
-
-	err = mgmt_start_discovery(adapter->dev_id);
-	if (err < 0)
-		error("start_discovery: %s (%d)", strerror(-err), -err);
+	mgmt_start_discovery(adapter->dev_id);
 
 	return FALSE;
 }
diff --git a/src/mgmt.c b/src/mgmt.c
index c55b1a8..d73cf2a 100644
--- a/src/mgmt.c
+++ b/src/mgmt.c
@@ -1961,8 +1961,11 @@ int mgmt_start_discovery(int index)
 
 	cp->type = info->discov_type;
 
-	if (write(mgmt_sock, buf, sizeof(buf)) < 0)
-		return -errno;
+	if (write(mgmt_sock, buf, sizeof(buf)) < 0) {
+		int err = -errno;
+		error("failed to write to MGMT socket: %s", strerror(err));
+		return err;
+	}
 
 	return 0;
 }
-- 
1.7.10.4

Re: [PATCH BlueZ 02/14] mgmt: print error message when start_discovery fails

[Anderson Lizardo]

Hi Joao,

On Fri, Jul 27, 2012 at 6:29 PM, João Paulo Rechi Vita
<jprvita@openbossa.org> wrote:
> If we fail to communicate with the MGMT socket is better to print the
> error message on the mgmtops plugin, where it really happened, instead
> of leaving this job to its users.
> ---
>  src/adapter.c |    6 +-----
>  src/mgmt.c    |    7 +++++--
>  2 files changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/src/adapter.c b/src/adapter.c
> index c9c82e3..5dd9821 100644
> --- a/src/adapter.c
> +++ b/src/adapter.c
> @@ -997,13 +997,9 @@ struct btd_device *adapter_get_device(DBusConnection *conn,
>  static gboolean discovery_cb(gpointer user_data)
>  {
>         struct btd_adapter *adapter = user_data;
> -       int err;
>
>         adapter->discov_id = 0;
> -
> -       err = mgmt_start_discovery(adapter->dev_id);
> -       if (err < 0)
> -               error("start_discovery: %s (%d)", strerror(-err), -err);
> +       mgmt_start_discovery(adapter->dev_id);
>
>         return FALSE;
>  }
> diff --git a/src/mgmt.c b/src/mgmt.c
> index c55b1a8..d73cf2a 100644
> --- a/src/mgmt.c
> +++ b/src/mgmt.c
> @@ -1961,8 +1961,11 @@ int mgmt_start_discovery(int index)
>
>         cp->type = info->discov_type;
>
> -       if (write(mgmt_sock, buf, sizeof(buf)) < 0)
> -               return -errno;
> +       if (write(mgmt_sock, buf, sizeof(buf)) < 0) {
> +               int err = -errno;
> +               error("failed to write to MGMT socket: %s", strerror(err));

I think this should be "strerror(-err)".

> +               return err;
> +       }
>
>         return 0;
>  }

Regards,
-- 
Anderson Lizardo
Instituto Nokia de Tecnologia - INdT
Manaus - Brazil

[PATCH BlueZ] mgmt: print error message when start_discovery fails

[João Paulo Rechi Vita]

If we fail to communicate with the MGMT socket is better to print the
error message on the mgmtops plugin, where it really happened, instead
of leaving this job to its users.
---
 src/adapter.c | 6 +-----
 src/mgmt.c    | 7 +++++--
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index 9e69b50..fa06cd2 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -1002,13 +1002,9 @@ struct btd_device *adapter_get_device(DBusConnection *conn,
 static gboolean discovery_cb(gpointer user_data)
 {
 	struct btd_adapter *adapter = user_data;
-	int err;
 
 	adapter->discov_id = 0;
-
-	err = mgmt_start_discovery(adapter->dev_id);
-	if (err < 0)
-		error("start_discovery: %s (%d)", strerror(-err), -err);
+	mgmt_start_discovery(adapter->dev_id);
 
 	return FALSE;
 }
diff --git a/src/mgmt.c b/src/mgmt.c
index c893972..8ae86d3 100644
--- a/src/mgmt.c
+++ b/src/mgmt.c
@@ -1990,8 +1990,11 @@ int mgmt_start_discovery(int index)
 
 	cp->type = info->discov_type;
 
-	if (write(mgmt_sock, buf, sizeof(buf)) < 0)
-		return -errno;
+	if (write(mgmt_sock, buf, sizeof(buf)) < 0) {
+		int err = -errno;
+		error("failed to write to MGMT socket: %s", strerror(-err));
+		return err;
+	}
 
 	return 0;
 }
-- 
1.7.11.2

Re: [PATCH BlueZ] mgmt: print error message when start_discovery fails

[Johan Hedberg]

Hi,

On Fri, Aug 03, 2012, João Paulo Rechi Vita wrote:
> If we fail to communicate with the MGMT socket is better to print the
> error message on the mgmtops plugin, where it really happened, instead
> of leaving this job to its users.
> ---
>  src/adapter.c | 6 +-----
>  src/mgmt.c    | 7 +++++--
>  2 files changed, 6 insertions(+), 7 deletions(-)

How do these two patches differ from patches 02/14 and 07/14 of the
patch set that was sent on July 27th? Why were these two patches resent
separately? A cover letter would have been quite useful here.

Johan

Re: [PATCH BlueZ] mgmt: print error message when start_discovery fails

[Johan Hedberg]

Hi,

On Tue, Aug 14, 2012, Johan Hedberg wrote:
> On Fri, Aug 03, 2012, João Paulo Rechi Vita wrote:
> > If we fail to communicate with the MGMT socket is better to print the
> > error message on the mgmtops plugin, where it really happened, instead
> > of leaving this job to its users.
> > ---
> >  src/adapter.c | 6 +-----
> >  src/mgmt.c    | 7 +++++--
> >  2 files changed, 6 insertions(+), 7 deletions(-)
> 
> How do these two patches differ from patches 02/14 and 07/14 of the
> patch set that was sent on July 27th? Why were these two patches resent
> separately? A cover letter would have been quite useful here.

Nevermind. I see that they reference the original thread and are
probably updates based on received comments. Anyway, it would have been
clearer if you'd have added "v2" to the subject and kept the xx/yy
numbering.

Johan

Re: [PATCH BlueZ] mgmt: print error message when start_discovery fails

[Joao Paulo Rechi Vita]

On Tue, Aug 14, 2012 at 7:28 AM, Johan Hedberg <johan.hedberg@gmail.com> wrote:
> Hi,
>
> On Tue, Aug 14, 2012, Johan Hedberg wrote:
>> On Fri, Aug 03, 2012, João Paulo Rechi Vita wrote:
>> > If we fail to communicate with the MGMT socket is better to print the
>> > error message on the mgmtops plugin, where it really happened, instead
>> > of leaving this job to its users.
>> > ---
>> >  src/adapter.c | 6 +-----
>> >  src/mgmt.c    | 7 +++++--
>> >  2 files changed, 6 insertions(+), 7 deletions(-)
>>
>> How do these two patches differ from patches 02/14 and 07/14 of the
>> patch set that was sent on July 27th? Why were these two patches resent
>> separately? A cover letter would have been quite useful here.
>
> Nevermind. I see that they reference the original thread and are
> probably updates based on received comments. Anyway, it would have been
> clearer if you'd have added "v2" to the subject and kept the xx/yy
> numbering.
>

Sorry, I thought that using "--in-reply-to <message_id>" was enough
for you to figure out what was going without problems. I've only
re-generated these two when re-sending, that's why they got a
different numbering. I'll be more caution next time.

-- 
João Paulo Rechi Vita
Openbossa Labs - INdT

[PATCH BlueZ 03/14] core: add compare function for bdaddr in a struct btd_device

[João Paulo Rechi Vita]

This is a utility function similar to device_address_cmp but comparing
bdaddr instead of the string representing the address. This way is
possible to avoid allocating two buffers to temporarily hold the
strings, two sprintf() calls to generate the strings from the bdaddr
arrays, and a string comparison, substituting all of it for one memcmp()
call.
---
 src/device.c |    5 +++++
 src/device.h |    1 +
 2 files changed, 6 insertions(+)

diff --git a/src/device.c b/src/device.c
index cd571f7..7ec98dd 100644
--- a/src/device.c
+++ b/src/device.c
@@ -1232,6 +1232,11 @@ gint device_address_cmp(struct btd_device *device, const gchar *address)
 	return strcasecmp(addr, address);
 }
 
+gint device_bdaddr_cmp(struct btd_device *device, bdaddr_t *bdaddr)
+{
+	return bacmp(&device->bdaddr, bdaddr);
+}
+
 static gboolean record_has_uuid(const sdp_record_t *rec,
 				const char *profile_uuid)
 {
diff --git a/src/device.h b/src/device.h
index 26e17f7..2b2e6d8 100644
--- a/src/device.h
+++ b/src/device.h
@@ -45,6 +45,7 @@ uint16_t btd_device_get_product(struct btd_device *device);
 uint16_t btd_device_get_version(struct btd_device *device);
 void device_remove(struct btd_device *device, gboolean remove_stored);
 gint device_address_cmp(struct btd_device *device, const gchar *address);
+gint device_bdaddr_cmp(struct btd_device *device, bdaddr_t *bdaddr);
 int device_browse_primary(struct btd_device *device, DBusConnection *conn,
 				DBusMessage *msg, gboolean secure);
 int device_browse_sdp(struct btd_device *device, DBusConnection *conn,
-- 
1.7.10.4

[PATCH BlueZ 04/14] core: Add a list of LE devices to connect

[João Paulo Rechi Vita]

This commit creates a per-adapter list of LE devices to connect when a
advertising from them is seen during a scan.
---
 src/adapter.c |   55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/adapter.h |    2 ++
 2 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/src/adapter.c b/src/adapter.c
index 5dd9821..d0f8d6b 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -132,6 +132,7 @@ struct btd_adapter {
 	GSList *devices;		/* Devices structure pointers */
 	GSList *mode_sessions;		/* Request Mode sessions */
 	GSList *disc_sessions;		/* Discovery sessions */
+	GSList *connect_list;		/* Devices to connect when found */
 	guint discov_id;		/* Discovery timer */
 	gboolean discovering;		/* Discovery active */
 	gboolean discov_suspended;	/* Discovery suspended */
@@ -2166,6 +2167,32 @@ const char *btd_adapter_get_name(struct btd_adapter *adapter)
 	return adapter->name;
 }
 
+void adapter_connect_list_add(struct btd_adapter *adapter,
+					struct btd_device *device)
+{
+	bdaddr_t bdaddr;
+
+	device_get_address(device, &bdaddr, NULL);
+	if (g_slist_find_custom(adapter->connect_list, &bdaddr,
+					(GCompareFunc) device_bdaddr_cmp)) {
+		DBG("trying to add device %s which is already in the connect "
+				"list, ignoring", device_get_path(device));
+		return;
+	}
+
+	adapter->connect_list = g_slist_append(adapter->connect_list, device);
+	DBG("%s added to %s's connect_list", device_get_path(device),
+								adapter->name);
+}
+
+void adapter_connect_list_remove(struct btd_adapter *adapter,
+					struct btd_device *device)
+{
+	adapter->connect_list = g_slist_remove(adapter->connect_list, device);
+	DBG("%s removed from %s's connect_list", device_get_path(device),
+								adapter->name);
+}
+
 void btd_adapter_start(struct btd_adapter *adapter)
 {
 	char address[18];
@@ -2820,6 +2847,21 @@ static char *read_stored_data(bdaddr_t *local, bdaddr_t *peer, const char *file)
 	return textfile_get(filename, peer_addr);
 }
 
+static gboolean connect_pending_cb(gpointer user_data)
+{
+	struct btd_device *device = user_data;
+	struct btd_adapter *adapter = device_get_adapter(device);
+
+	/* in the future we may want to check here if the controller supports
+	 * scanning and connecting at the same time */
+	if (adapter->discovering)
+		return TRUE;
+
+	/* TODO: call device connect callback */
+
+	return FALSE;
+}
+
 void adapter_update_found_devices(struct btd_adapter *adapter,
 					bdaddr_t *bdaddr, uint8_t bdaddr_type,
 					int8_t rssi, uint8_t confirm_name,
@@ -2831,6 +2873,7 @@ void adapter_update_found_devices(struct btd_adapter *adapter,
 	gboolean legacy, name_known;
 	uint32_t dev_class;
 	int err;
+	GSList *l;
 
 	memset(&eir_data, 0, sizeof(eir_data));
 	err = eir_parse(&eir_data, data, data_len);
@@ -2853,7 +2896,7 @@ void adapter_update_found_devices(struct btd_adapter *adapter,
 								eir_data.name);
 
 	dev = adapter_search_found_devices(adapter, bdaddr);
-	if (dev) {
+	if (dev && dev->bdaddr_type == BDADDR_BREDR) {
 		adapter->oor_devices = g_slist_remove(adapter->oor_devices,
 							dev);
 
@@ -2904,6 +2947,16 @@ void adapter_update_found_devices(struct btd_adapter *adapter,
 
 	adapter->found_devices = g_slist_prepend(adapter->found_devices, dev);
 
+	if (bdaddr_type == BDADDR_LE_PUBLIC ||
+					bdaddr_type == BDADDR_LE_RANDOM) {
+		l = g_slist_find_custom(adapter->connect_list, bdaddr,
+					(GCompareFunc) device_bdaddr_cmp);
+		if (l) {
+			g_idle_add(connect_pending_cb, l->data);
+			stop_discovery(adapter);
+		}
+	}
+
 done:
 	dev->rssi = rssi;
 
diff --git a/src/adapter.h b/src/adapter.h
index 602bb6f..e31f355 100644
--- a/src/adapter.h
+++ b/src/adapter.h
@@ -230,3 +230,5 @@ int btd_adapter_remove_remote_oob_data(struct btd_adapter *adapter,
 
 int btd_adapter_gatt_server_start(struct btd_adapter *adapter);
 void btd_adapter_gatt_server_stop(struct btd_adapter *adapter);
+void adapter_connect_list_add(struct btd_adapter *adapter, struct btd_device *device);
+void adapter_connect_list_remove(struct btd_adapter *adapter, struct btd_device *device);
-- 
1.7.10.4

[PATCH BlueZ 05/14] core: use adapter connect list for LE connections

[João Paulo Rechi Vita]

When a connection is needed for a LE device it is added to the adapter
connect list instead of directly connecting the ATT io channel.
---
 src/adapter.c |    2 +-
 src/device.c  |   43 +++++++++++--------------------------------
 src/device.h  |    1 +
 3 files changed, 13 insertions(+), 33 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index d0f8d6b..b48dd0a 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -2857,7 +2857,7 @@ static gboolean connect_pending_cb(gpointer user_data)
 	if (adapter->discovering)
 		return TRUE;
 
-	/* TODO: call device connect callback */
+	device_att_connect(device);
 
 	return FALSE;
 }
diff --git a/src/device.c b/src/device.c
index 7ec98dd..2cd694d 100644
--- a/src/device.c
+++ b/src/device.c
@@ -1796,15 +1796,6 @@ static void attio_disconnected(gpointer data, gpointer user_data)
 		attio->dcfunc(attio->user_data);
 }
 
-static void att_connect_dispatched(gpointer user_data)
-{
-	struct btd_device *device = user_data;
-
-	device->auto_id = 0;
-}
-
-static gboolean att_connect(gpointer user_data);
-
 static gboolean attrib_disconnected_cb(GIOChannel *io, GIOCondition cond,
 							gpointer user_data)
 {
@@ -1824,10 +1815,7 @@ static gboolean attrib_disconnected_cb(GIOChannel *io, GIOCondition cond,
 	if (device->auto_connect == FALSE || err != ETIMEDOUT)
 		goto done;
 
-	device->auto_id = g_timeout_add_seconds_full(G_PRIORITY_DEFAULT_IDLE,
-						AUTO_CONNECTION_INTERVAL,
-						att_connect, device,
-						att_connect_dispatched);
+	adapter_connect_list_add(device_get_adapter(device), device);
 
 done:
 	attio_cleanup(device);
@@ -1971,11 +1959,7 @@ static void att_error_cb(const GError *gerr, gpointer user_data)
 	if (device->auto_connect == FALSE)
 		return;
 
-	device->auto_id = g_timeout_add_seconds_full(G_PRIORITY_DEFAULT_IDLE,
-						AUTO_CONNECTION_INTERVAL,
-						att_connect, device,
-						att_connect_dispatched);
-
+	adapter_connect_list_add(device_get_adapter(device), device);
 	DBG("Enabling automatic connections");
 }
 
@@ -1990,7 +1974,7 @@ static void att_success_cb(gpointer user_data)
 	g_slist_foreach(device->attios, attio_connected, device->attrib);
 }
 
-static gboolean att_connect(gpointer user_data)
+gboolean device_att_connect(gpointer user_data)
 {
 	struct btd_device *device = user_data;
 	struct btd_adapter *adapter = device->adapter;
@@ -2260,6 +2244,9 @@ void device_set_temporary(struct btd_device *device, gboolean temporary)
 
 	DBG("temporary %d", temporary);
 
+	if (temporary)
+		adapter_connect_list_remove(device_get_adapter(device), device);
+
 	device->temporary = temporary;
 }
 
@@ -2275,6 +2262,7 @@ void device_set_bonded(struct btd_device *device, gboolean bonded)
 
 void device_set_auto_connect(struct btd_device *device, gboolean enable)
 {
+	struct btd_adapter *adapter = device_get_adapter(device);
 	char addr[18];
 
 	if (!device)
@@ -2288,15 +2276,10 @@ void device_set_auto_connect(struct btd_device *device, gboolean enable)
 
 	/* Disabling auto connect */
 	if (enable == FALSE) {
-		if (device->auto_id)
-			g_source_remove(device->auto_id);
+		adapter_connect_list_remove(adapter, device);
 		return;
 	}
 
-	/* Enabling auto connect */
-	if (device->auto_id != 0)
-		return;
-
 	if (device->attrib) {
 		DBG("Already connected");
 		return;
@@ -2305,9 +2288,8 @@ void device_set_auto_connect(struct btd_device *device, gboolean enable)
 	if (device->attios == NULL && device->attios_offline == NULL)
 		return;
 
-	device->auto_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE,
-						att_connect, device,
-						att_connect_dispatched);
+	/* Enabling auto connect */
+	adapter_connect_list_add(adapter, device);
 }
 
 static gboolean start_discovery(gpointer user_data)
@@ -3085,10 +3067,7 @@ guint btd_device_add_attio_callback(struct btd_device *device,
 
 	device->attios = g_slist_append(device->attios, attio);
 
-	if (device->auto_id == 0)
-		device->auto_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE,
-						att_connect, device,
-						att_connect_dispatched);
+	adapter_connect_list_add(device_get_adapter(device), device);
 
 	return attio->id;
 }
diff --git a/src/device.h b/src/device.h
index 2b2e6d8..9b7df1c 100644
--- a/src/device.h
+++ b/src/device.h
@@ -127,3 +127,4 @@ int device_unblock(DBusConnection *conn, struct btd_device *device,
 void device_set_pnpid(struct btd_device *device, uint8_t vendor_id_src,
 			uint16_t vendor_id, uint16_t product_id,
 			uint16_t product_ver);
+gboolean device_att_connect(gpointer user_data);
-- 
1.7.10.4

[PATCH BlueZ 06/14] core: mutually exclude concurrent connections

[João Paulo Rechi Vita]

Since controllers don't support more than one ongoing connection
procedure at the same time, new connection attempts needs to yield if
there is an ongoing connection procedure already.
---
 src/adapter.c |   65 ++++++++++++++++++++++++++++++++++++++++++++++++++-------
 src/device.c  |    4 ++--
 src/device.h  |    2 +-
 3 files changed, 60 insertions(+), 11 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index b48dd0a..4c2505a 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -133,8 +133,10 @@ struct btd_adapter {
 	GSList *mode_sessions;		/* Request Mode sessions */
 	GSList *disc_sessions;		/* Discovery sessions */
 	GSList *connect_list;		/* Devices to connect when found */
+	GSList *connecting_list;	/* Pending connects */
 	guint discov_id;		/* Discovery timer */
 	gboolean discovering;		/* Discovery active */
+	gboolean connecting;		/* Connect active */
 	gboolean discov_suspended;	/* Discovery suspended */
 	guint auto_timeout_id;		/* Automatic connections timeout */
 	sdp_list_t *services;		/* Services associated to adapter */
@@ -2220,6 +2222,9 @@ void btd_adapter_start(struct btd_adapter *adapter)
 	call_adapter_powered_callbacks(adapter, TRUE);
 
 	info("Adapter %s has been enabled", adapter->path);
+
+	if (g_slist_length(adapter->connect_list))
+		mgmt_start_discovery(adapter->dev_id);
 }
 
 static void reply_pending_requests(struct btd_adapter *adapter)
@@ -2533,6 +2538,7 @@ void adapter_set_discovering(struct btd_adapter *adapter,
 						gboolean discovering)
 {
 	const char *path = adapter->path;
+	guint connect_list_size;
 
 	adapter->discovering = discovering;
 
@@ -2547,11 +2553,17 @@ void adapter_set_discovering(struct btd_adapter *adapter,
 	g_slist_free_full(adapter->oor_devices, dev_info_free);
 	adapter->oor_devices = g_slist_copy(adapter->found_devices);
 
-	if (!adapter_has_discov_sessions(adapter) || adapter->discov_suspended)
+	if (adapter->discov_suspended)
 		return;
 
-	DBG("hci%u restarting discovery, disc_sessions %u", adapter->dev_id,
-					g_slist_length(adapter->disc_sessions));
+	connect_list_size = g_slist_length(adapter->connect_list);
+
+	if (!adapter_has_discov_sessions(adapter) && !connect_list_size)
+		return;
+
+	DBG("hci%u restarting discovery: disc_sessions %u, connect_list size "
+		"%u", adapter->dev_id, g_slist_length(adapter->disc_sessions),
+							connect_list_size);
 
 	adapter->discov_id = g_idle_add(discovery_cb, adapter);
 }
@@ -2847,17 +2859,44 @@ static char *read_stored_data(bdaddr_t *local, bdaddr_t *peer, const char *file)
 	return textfile_get(filename, peer_addr);
 }
 
+static gboolean clean_connecting_state(GIOChannel *io, GIOCondition cond, gpointer user_data)
+{
+	struct btd_device *device = user_data;
+	struct btd_adapter *adapter = device_get_adapter(device);
+
+	adapter_connect_list_remove(adapter, device);
+	adapter->connecting_list = g_slist_remove(adapter->connecting_list,
+								device);
+
+	adapter->connecting = FALSE;
+
+	if (!g_slist_length(adapter->connecting_list) &&
+					g_slist_length(adapter->connect_list))
+		mgmt_start_discovery(adapter->dev_id);
+
+	btd_device_unref(device);
+
+	return FALSE;
+}
+
 static gboolean connect_pending_cb(gpointer user_data)
 {
 	struct btd_device *device = user_data;
 	struct btd_adapter *adapter = device_get_adapter(device);
+	GIOChannel *io;
 
 	/* in the future we may want to check here if the controller supports
 	 * scanning and connecting at the same time */
 	if (adapter->discovering)
 		return TRUE;
 
-	device_att_connect(device);
+	if (adapter->connecting)
+		return TRUE;
+
+	adapter->connecting = TRUE;
+	io = device_att_connect(device);
+	g_io_add_watch(io, G_IO_OUT | G_IO_ERR, clean_connecting_state,
+						btd_device_ref(device));
 
 	return FALSE;
 }
@@ -2949,12 +2988,22 @@ void adapter_update_found_devices(struct btd_adapter *adapter,
 
 	if (bdaddr_type == BDADDR_LE_PUBLIC ||
 					bdaddr_type == BDADDR_LE_RANDOM) {
+		struct btd_device *device;
+
 		l = g_slist_find_custom(adapter->connect_list, bdaddr,
 					(GCompareFunc) device_bdaddr_cmp);
-		if (l) {
-			g_idle_add(connect_pending_cb, l->data);
-			stop_discovery(adapter);
-		}
+		if (!l)
+			goto done;
+
+		device = l->data;
+		l = g_slist_find(adapter->connecting_list, device);
+		if (l)
+			goto done;
+
+		g_idle_add(connect_pending_cb, device);
+		adapter->connecting_list = g_slist_append(
+					adapter->connecting_list, device);
+		stop_discovery(adapter);
 	}
 
 done:
diff --git a/src/device.c b/src/device.c
index 2cd694d..a0dc5a0 100644
--- a/src/device.c
+++ b/src/device.c
@@ -1974,7 +1974,7 @@ static void att_success_cb(gpointer user_data)
 	g_slist_foreach(device->attios, attio_connected, device->attrib);
 }
 
-gboolean device_att_connect(gpointer user_data)
+GIOChannel *device_att_connect(gpointer user_data)
 {
 	struct btd_device *device = user_data;
 	struct btd_adapter *adapter = device->adapter;
@@ -2022,7 +2022,7 @@ gboolean device_att_connect(gpointer user_data)
 
 	device->att_io = io;
 
-	return FALSE;
+	return io;
 }
 
 static void att_browse_error_cb(const GError *gerr, gpointer user_data)
diff --git a/src/device.h b/src/device.h
index 9b7df1c..5f51745 100644
--- a/src/device.h
+++ b/src/device.h
@@ -127,4 +127,4 @@ int device_unblock(DBusConnection *conn, struct btd_device *device,
 void device_set_pnpid(struct btd_device *device, uint8_t vendor_id_src,
 			uint16_t vendor_id, uint16_t product_id,
 			uint16_t product_ver);
-gboolean device_att_connect(gpointer user_data);
+GIOChannel *device_att_connect(gpointer user_data);
-- 
1.7.10.4

[PATCH BlueZ 07/14] mgmt: Add LE scanning callback

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patch adds a new callback to allow the adapter to control LE
scanning. The current approach uses the active scanning with default
windows and intervals defined by the core spec without any filtering.
---
 src/mgmt.c |   32 ++++++++++++++++++++++++++++++++
 src/mgmt.h |    1 +
 2 files changed, 33 insertions(+)

diff --git a/src/mgmt.c b/src/mgmt.c
index d73cf2a..b013aeb 100644
--- a/src/mgmt.c
+++ b/src/mgmt.c
@@ -1970,6 +1970,38 @@ int mgmt_start_discovery(int index)
 	return 0;
 }
 
+int mgmt_start_scanning(int index)
+{
+	char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
+	struct mgmt_hdr *hdr = (void *) buf;
+	struct mgmt_cp_start_discovery *cp = (void *) &buf[sizeof(*hdr)];
+	struct controller_info *info = &controllers[index];
+
+	DBG("index %d", index);
+
+	info->discov_type = 0;
+
+	if (mgmt_low_energy(info->current_settings)) {
+		hci_set_bit(BDADDR_LE_PUBLIC, &info->discov_type);
+		hci_set_bit(BDADDR_LE_RANDOM, &info->discov_type);
+	}
+
+	memset(buf, 0, sizeof(buf));
+	hdr->opcode = htobs(MGMT_OP_START_DISCOVERY);
+	hdr->len = htobs(sizeof(*cp));
+	hdr->index = htobs(index);
+
+	cp->type = info->discov_type;
+
+	if (write(mgmt_sock, buf, sizeof(buf)) < 0) {
+		int err = errno;
+		error("failed to write to MGMT socket: %s", strerror(err));
+		return -err;
+	}
+
+	return 0;
+}
+
 int mgmt_stop_discovery(int index)
 {
 	char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
diff --git a/src/mgmt.h b/src/mgmt.h
index 0658198..ed47b40 100644
--- a/src/mgmt.h
+++ b/src/mgmt.h
@@ -33,6 +33,7 @@ int mgmt_set_dev_class(int index, uint8_t major, uint8_t minor);
 int mgmt_set_fast_connectable(int index, gboolean enable);
 
 int mgmt_start_discovery(int index);
+int mgmt_start_scanning(int index);
 int mgmt_stop_discovery(int index);
 
 int mgmt_read_clock(int index, bdaddr_t *bdaddr, int which, int timeout,
-- 
1.7.10.4

Re: [PATCH BlueZ 07/14] mgmt: Add LE scanning callback

[Anderson Lizardo]

Hi Claudio,

On Fri, Jul 27, 2012 at 6:29 PM, João Paulo Rechi Vita
<jprvita@openbossa.org> wrote:
> +       cp->type = info->discov_type;
> +
> +       if (write(mgmt_sock, buf, sizeof(buf)) < 0) {
> +               int err = errno;
> +               error("failed to write to MGMT socket: %s", strerror(err));
> +               return -err;

For consistency, "err" should be a negative value, and use
"strerror(-err)" and "return err" instead.

Regards,
-- 
Anderson Lizardo
Instituto Nokia de Tecnologia - INdT
Manaus - Brazil

[PATCH BlueZ] mgmt: Add LE scanning callback

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patch adds a new callback to allow the adapter to control LE
scanning. The current approach uses the active scanning with default
windows and intervals defined by the core spec without any filtering.
---
 src/mgmt.c | 32 ++++++++++++++++++++++++++++++++
 src/mgmt.h |  1 +
 2 files changed, 33 insertions(+)

diff --git a/src/mgmt.c b/src/mgmt.c
index 8ae86d3..5ceeaa8 100644
--- a/src/mgmt.c
+++ b/src/mgmt.c
@@ -1999,6 +1999,38 @@ int mgmt_start_discovery(int index)
 	return 0;
 }
 
+int mgmt_start_scanning(int index)
+{
+	char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
+	struct mgmt_hdr *hdr = (void *) buf;
+	struct mgmt_cp_start_discovery *cp = (void *) &buf[sizeof(*hdr)];
+	struct controller_info *info = &controllers[index];
+
+	DBG("index %d", index);
+
+	info->discov_type = 0;
+
+	if (mgmt_low_energy(info->current_settings)) {
+		hci_set_bit(BDADDR_LE_PUBLIC, &info->discov_type);
+		hci_set_bit(BDADDR_LE_RANDOM, &info->discov_type);
+	}
+
+	memset(buf, 0, sizeof(buf));
+	hdr->opcode = htobs(MGMT_OP_START_DISCOVERY);
+	hdr->len = htobs(sizeof(*cp));
+	hdr->index = htobs(index);
+
+	cp->type = info->discov_type;
+
+	if (write(mgmt_sock, buf, sizeof(buf)) < 0) {
+		int err = -errno;
+		error("failed to write to MGMT socket: %s", strerror(-err));
+		return err;
+	}
+
+	return 0;
+}
+
 int mgmt_stop_discovery(int index)
 {
 	char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
diff --git a/src/mgmt.h b/src/mgmt.h
index 0658198..ed47b40 100644
--- a/src/mgmt.h
+++ b/src/mgmt.h
@@ -33,6 +33,7 @@ int mgmt_set_dev_class(int index, uint8_t major, uint8_t minor);
 int mgmt_set_fast_connectable(int index, gboolean enable);
 
 int mgmt_start_discovery(int index);
+int mgmt_start_scanning(int index);
 int mgmt_stop_discovery(int index);
 
 int mgmt_read_clock(int index, bdaddr_t *bdaddr, int which, int timeout,
-- 
1.7.11.2

Re: [PATCH BlueZ] mgmt: Add LE scanning callback

[Johan Hedberg]

Hi,

On Fri, Aug 03, 2012, João Paulo Rechi Vita wrote:
> From: Claudio Takahasi <claudio.takahasi@openbossa.org>
> 
> This patch adds a new callback to allow the adapter to control LE
> scanning. The current approach uses the active scanning with default
> windows and intervals defined by the core spec without any filtering.
> ---
>  src/mgmt.c | 32 ++++++++++++++++++++++++++++++++
>  src/mgmt.h |  1 +
>  2 files changed, 33 insertions(+)
> 
> diff --git a/src/mgmt.c b/src/mgmt.c
> index 8ae86d3..5ceeaa8 100644
> --- a/src/mgmt.c
> +++ b/src/mgmt.c
> @@ -1999,6 +1999,38 @@ int mgmt_start_discovery(int index)
>  	return 0;
>  }
>  
> +int mgmt_start_scanning(int index)
> +{
> +	char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
> +	struct mgmt_hdr *hdr = (void *) buf;
> +	struct mgmt_cp_start_discovery *cp = (void *) &buf[sizeof(*hdr)];
> +	struct controller_info *info = &controllers[index];
> +
> +	DBG("index %d", index);
> +
> +	info->discov_type = 0;
> +
> +	if (mgmt_low_energy(info->current_settings)) {
> +		hci_set_bit(BDADDR_LE_PUBLIC, &info->discov_type);
> +		hci_set_bit(BDADDR_LE_RANDOM, &info->discov_type);
> +	}

Shouldn't you just return an error here (e.g. -ENOTSUP) if LE is not
supported/enabled?

Have there been any patches sent that would use this API? At least I
didn't see any after a quick scan of the mailing list.

Johan

Re: [PATCH BlueZ] mgmt: Add LE scanning callback

[Johan Hedberg]

Hi,

On Tue, Aug 14, 2012, Johan Hedberg wrote:
> On Fri, Aug 03, 2012, João Paulo Rechi Vita wrote:
> > From: Claudio Takahasi <claudio.takahasi@openbossa.org>
> > 
> > This patch adds a new callback to allow the adapter to control LE
> > scanning. The current approach uses the active scanning with default
> > windows and intervals defined by the core spec without any filtering.
> > ---
> >  src/mgmt.c | 32 ++++++++++++++++++++++++++++++++
> >  src/mgmt.h |  1 +
> >  2 files changed, 33 insertions(+)
> > 
> > diff --git a/src/mgmt.c b/src/mgmt.c
> > index 8ae86d3..5ceeaa8 100644
> > --- a/src/mgmt.c
> > +++ b/src/mgmt.c
> > @@ -1999,6 +1999,38 @@ int mgmt_start_discovery(int index)
> >  	return 0;
> >  }
> >  
> > +int mgmt_start_scanning(int index)
> > +{
> > +	char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
> > +	struct mgmt_hdr *hdr = (void *) buf;
> > +	struct mgmt_cp_start_discovery *cp = (void *) &buf[sizeof(*hdr)];
> > +	struct controller_info *info = &controllers[index];
> > +
> > +	DBG("index %d", index);
> > +
> > +	info->discov_type = 0;
> > +
> > +	if (mgmt_low_energy(info->current_settings)) {
> > +		hci_set_bit(BDADDR_LE_PUBLIC, &info->discov_type);
> > +		hci_set_bit(BDADDR_LE_RANDOM, &info->discov_type);
> > +	}
> 
> Shouldn't you just return an error here (e.g. -ENOTSUP) if LE is not
> supported/enabled?
> 
> Have there been any patches sent that would use this API? At least I
> didn't see any after a quick scan of the mailing list.

I see that these users are part of the original thread sent on Jul 27th.
I got confused since you renamed the subjects in a way that there was no
other indication to the original thread except the References: header.

The point about returning an error still remains though.

Johan

Re: [PATCH BlueZ] mgmt: Add LE scanning callback

[Joao Paulo Rechi Vita]

On Tue, Aug 14, 2012 at 7:30 AM, Johan Hedberg <johan.hedberg@gmail.com> wrote:
> Hi,
>
> On Tue, Aug 14, 2012, Johan Hedberg wrote:
>> On Fri, Aug 03, 2012, João Paulo Rechi Vita wrote:
>> > From: Claudio Takahasi <claudio.takahasi@openbossa.org>
>> >
>> > This patch adds a new callback to allow the adapter to control LE
>> > scanning. The current approach uses the active scanning with default
>> > windows and intervals defined by the core spec without any filtering.
>> > ---
>> >  src/mgmt.c | 32 ++++++++++++++++++++++++++++++++
>> >  src/mgmt.h |  1 +
>> >  2 files changed, 33 insertions(+)
>> >
>> > diff --git a/src/mgmt.c b/src/mgmt.c
>> > index 8ae86d3..5ceeaa8 100644
>> > --- a/src/mgmt.c
>> > +++ b/src/mgmt.c
>> > @@ -1999,6 +1999,38 @@ int mgmt_start_discovery(int index)
>> >     return 0;
>> >  }
>> >
>> > +int mgmt_start_scanning(int index)
>> > +{
>> > +   char buf[MGMT_HDR_SIZE + sizeof(struct mgmt_cp_start_discovery)];
>> > +   struct mgmt_hdr *hdr = (void *) buf;
>> > +   struct mgmt_cp_start_discovery *cp = (void *) &buf[sizeof(*hdr)];
>> > +   struct controller_info *info = &controllers[index];
>> > +
>> > +   DBG("index %d", index);
>> > +
>> > +   info->discov_type = 0;
>> > +
>> > +   if (mgmt_low_energy(info->current_settings)) {
>> > +           hci_set_bit(BDADDR_LE_PUBLIC, &info->discov_type);
>> > +           hci_set_bit(BDADDR_LE_RANDOM, &info->discov_type);
>> > +   }
>>
>> Shouldn't you just return an error here (e.g. -ENOTSUP) if LE is not
>> supported/enabled?
>>
>> Have there been any patches sent that would use this API? At least I
>> didn't see any after a quick scan of the mailing list.
>
> I see that these users are part of the original thread sent on Jul 27th.
> I got confused since you renamed the subjects in a way that there was no
> other indication to the original thread except the References: header.
>
> The point about returning an error still remains though.
>

Ok, as soon as Claudio fixes this I'll send an updated revision of the
whole series tagged with 'v2'.

-- 
João Paulo Rechi Vita
Openbossa Labs - INdT

[PATCH BlueZ 08/14] core: Replace interleaved by LE scanning

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patches replaces the interleaved discovery by LE scanning when LE
re-connection is required.
---
 src/adapter.c |   22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index 4c2505a..46b32d7 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -2224,7 +2224,7 @@ void btd_adapter_start(struct btd_adapter *adapter)
 	info("Adapter %s has been enabled", adapter->path);
 
 	if (g_slist_length(adapter->connect_list))
-		mgmt_start_discovery(adapter->dev_id);
+		mgmt_start_scanning(adapter->dev_id);
 }
 
 static void reply_pending_requests(struct btd_adapter *adapter)
@@ -2558,14 +2558,22 @@ void adapter_set_discovering(struct btd_adapter *adapter,
 
 	connect_list_size = g_slist_length(adapter->connect_list);
 
-	if (!adapter_has_discov_sessions(adapter) && !connect_list_size)
+	if (adapter_has_discov_sessions(adapter)) {
+		adapter->discov_id = g_idle_add(discovery_cb, adapter);
+
+		DBG("hci%u restarting discovery: disc_sessions %u",
+				adapter->dev_id,
+				g_slist_length(adapter->disc_sessions));
 		return;
+	}
 
-	DBG("hci%u restarting discovery: disc_sessions %u, connect_list size "
-		"%u", adapter->dev_id, g_slist_length(adapter->disc_sessions),
-							connect_list_size);
+	if (connect_list_size) {
+		mgmt_start_scanning(adapter->dev_id);
 
-	adapter->discov_id = g_idle_add(discovery_cb, adapter);
+		DBG("hci%u restarting scanning connect_list size %u",
+				adapter->dev_id, connect_list_size);
+		return;
+	}
 }
 
 static void suspend_discovery(struct btd_adapter *adapter)
@@ -2872,7 +2880,7 @@ static gboolean clean_connecting_state(GIOChannel *io, GIOCondition cond, gpoint
 
 	if (!g_slist_length(adapter->connecting_list) &&
 					g_slist_length(adapter->connect_list))
-		mgmt_start_discovery(adapter->dev_id);
+		mgmt_start_scanning(adapter->dev_id);
 
 	btd_device_unref(device);
 
-- 
1.7.10.4

[PATCH BlueZ 09/14] core: Start LE scanning when a device requests

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patch enables the LE scanning when a device requires connection and
there isn't discovery sessions, triggering the General Connection
Establishment Procedure.
---
 src/adapter.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/adapter.c b/src/adapter.c
index 46b32d7..3bc2d0e 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -2185,6 +2185,11 @@ void adapter_connect_list_add(struct btd_adapter *adapter,
 	adapter->connect_list = g_slist_append(adapter->connect_list, device);
 	DBG("%s added to %s's connect_list", device_get_path(device),
 								adapter->name);
+
+	if (adapter->disc_sessions)
+		return;
+
+	mgmt_start_scanning(adapter->dev_id);
 }
 
 void adapter_connect_list_remove(struct btd_adapter *adapter,
-- 
1.7.10.4

[PATCH BlueZ 10/14] core: Remove leftover define

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

---
 src/device.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/src/device.c b/src/device.c
index a0dc5a0..d81976e 100644
--- a/src/device.c
+++ b/src/device.c
@@ -67,8 +67,6 @@
 #define DISCONNECT_TIMER	2
 #define DISCOVERY_TIMER		2
 
-#define AUTO_CONNECTION_INTERVAL	5 /* Next connection attempt */
-
 /* When all services should trust a remote device */
 #define GLOBAL_TRUST "[all]"
 
-- 
1.7.10.4

[PATCH BlueZ 11/14] core: Queue discovery if scanning is active

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patch manages BR/EDR inquiry and BLE scanning discovery sessions.
A scanning session is added in the discovery session list when there is
a bonded device which requires re-connection.

bluetoothd decides if interleaved or scanning needs to be executed based
on the queued discovery sessions. Interleaved discovery has higher
priority, scanning only is executed when there is only a scanning
session active.
---
 src/adapter.c |   68 +++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 47 insertions(+), 21 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index 3bc2d0e..f27af24 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -132,6 +132,7 @@ struct btd_adapter {
 	GSList *devices;		/* Devices structure pointers */
 	GSList *mode_sessions;		/* Request Mode sessions */
 	GSList *disc_sessions;		/* Discovery sessions */
+	struct session_req *scanning_session;
 	GSList *connect_list;		/* Devices to connect when found */
 	GSList *connecting_list;	/* Pending connects */
 	guint discov_id;		/* Discovery timer */
@@ -220,18 +221,19 @@ static struct session_req *create_session(struct btd_adapter *adapter,
 					DBusConnection *conn, DBusMessage *msg,
 					uint8_t mode, GDBusWatchFunction cb)
 {
-	const char *sender = dbus_message_get_sender(msg);
+	const char *sender;
 	struct session_req *req;
 
 	req = g_new0(struct session_req, 1);
 	req->adapter = adapter;
-	req->conn = dbus_connection_ref(conn);
-	req->msg = dbus_message_ref(msg);
 	req->mode = mode;
 
-	if (cb == NULL)
+	if (conn == NULL || cb == NULL || msg == NULL)
 		return session_ref(req);
 
+	req->conn = dbus_connection_ref(conn);
+	req->msg = dbus_message_ref(msg);
+	sender = dbus_message_get_sender(msg);
 	req->owner = g_strdup(sender);
 	req->id = g_dbus_add_disconnect_watch(conn, sender, cb, req, NULL);
 
@@ -443,7 +445,9 @@ static struct session_req *find_session(GSList *list, const char *sender)
 	for (; list; list = list->next) {
 		struct session_req *req = list->data;
 
-		if (g_str_equal(req->owner, sender))
+		/* req->owner may be NULL if the session has been added by the
+		 * daemon itself, so we use g_strcmp0 instead of g_str_equal */
+		if (g_strcmp0(req->owner, sender) == 0)
 			return req;
 	}
 
@@ -518,7 +522,7 @@ static void session_remove(struct session_req *req)
 	struct btd_adapter *adapter = req->adapter;
 
 	/* Ignore set_mode session */
-	if (req->owner == NULL)
+	if (req->owner == NULL && adapter->pending_mode)
 		return;
 
 	DBG("%s session %p with %s deactivated",
@@ -1002,7 +1006,12 @@ static gboolean discovery_cb(gpointer user_data)
 	struct btd_adapter *adapter = user_data;
 
 	adapter->discov_id = 0;
-	mgmt_start_discovery(adapter->dev_id);
+
+	if (adapter->scanning_session &&
+			(g_slist_length(adapter->disc_sessions) == 1))
+		mgmt_start_scanning(adapter->dev_id);
+	else
+		mgmt_start_discovery(adapter->dev_id);
 
 	return FALSE;
 }
@@ -2172,6 +2181,7 @@ const char *btd_adapter_get_name(struct btd_adapter *adapter)
 void adapter_connect_list_add(struct btd_adapter *adapter,
 					struct btd_device *device)
 {
+	struct session_req *req;
 	bdaddr_t bdaddr;
 
 	device_get_address(device, &bdaddr, NULL);
@@ -2186,10 +2196,21 @@ void adapter_connect_list_add(struct btd_adapter *adapter,
 	DBG("%s added to %s's connect_list", device_get_path(device),
 								adapter->name);
 
-	if (adapter->disc_sessions)
+	if (!adapter->up)
 		return;
 
-	mgmt_start_scanning(adapter->dev_id);
+	if (adapter->off_requested)
+		return;
+
+	if (adapter->scanning_session)
+		return;
+
+	if (adapter->disc_sessions == NULL)
+		adapter->discov_id = g_idle_add(discovery_cb, adapter);
+
+	req = create_session(adapter, NULL, NULL, 0, NULL);
+	adapter->disc_sessions = g_slist_append(adapter->disc_sessions, req);
+	adapter->scanning_session = req;
 }
 
 void adapter_connect_list_remove(struct btd_adapter *adapter,
@@ -2202,6 +2223,7 @@ void adapter_connect_list_remove(struct btd_adapter *adapter,
 
 void btd_adapter_start(struct btd_adapter *adapter)
 {
+	struct session_req *req;
 	char address[18];
 	gboolean powered;
 
@@ -2228,8 +2250,15 @@ void btd_adapter_start(struct btd_adapter *adapter)
 
 	info("Adapter %s has been enabled", adapter->path);
 
-	if (g_slist_length(adapter->connect_list))
-		mgmt_start_scanning(adapter->dev_id);
+	if (g_slist_length(adapter->connect_list) == 0 ||
+					adapter->disc_sessions)
+		return;
+
+	req = create_session(adapter, NULL, NULL, 0, NULL);
+	adapter->disc_sessions = g_slist_append(adapter->disc_sessions, req);
+	adapter->scanning_session = req;
+
+	adapter->discov_id = g_idle_add(discovery_cb, adapter);
 }
 
 static void reply_pending_requests(struct btd_adapter *adapter)
@@ -2563,6 +2592,11 @@ void adapter_set_discovering(struct btd_adapter *adapter,
 
 	connect_list_size = g_slist_length(adapter->connect_list);
 
+	if (connect_list_size == 0 && adapter->scanning_session) {
+		session_unref(adapter->scanning_session);
+		adapter->scanning_session = NULL;
+	}
+
 	if (adapter_has_discov_sessions(adapter)) {
 		adapter->discov_id = g_idle_add(discovery_cb, adapter);
 
@@ -2571,14 +2605,6 @@ void adapter_set_discovering(struct btd_adapter *adapter,
 				g_slist_length(adapter->disc_sessions));
 		return;
 	}
-
-	if (connect_list_size) {
-		mgmt_start_scanning(adapter->dev_id);
-
-		DBG("hci%u restarting scanning connect_list size %u",
-				adapter->dev_id, connect_list_size);
-		return;
-	}
 }
 
 static void suspend_discovery(struct btd_adapter *adapter)
@@ -2877,7 +2903,6 @@ static gboolean clean_connecting_state(GIOChannel *io, GIOCondition cond, gpoint
 	struct btd_device *device = user_data;
 	struct btd_adapter *adapter = device_get_adapter(device);
 
-	adapter_connect_list_remove(adapter, device);
 	adapter->connecting_list = g_slist_remove(adapter->connecting_list,
 								device);
 
@@ -2885,7 +2910,7 @@ static gboolean clean_connecting_state(GIOChannel *io, GIOCondition cond, gpoint
 
 	if (!g_slist_length(adapter->connecting_list) &&
 					g_slist_length(adapter->connect_list))
-		mgmt_start_scanning(adapter->dev_id);
+		adapter->discov_id = g_idle_add(discovery_cb, adapter);
 
 	btd_device_unref(device);
 
@@ -3009,6 +3034,7 @@ void adapter_update_found_devices(struct btd_adapter *adapter,
 			goto done;
 
 		device = l->data;
+		adapter_connect_list_remove(adapter, device);
 		l = g_slist_find(adapter->connecting_list, device);
 		if (l)
 			goto done;
-- 
1.7.10.4

[PATCH BlueZ 12/14] test: Fix exiting the bus when a discovery session ends

[João Paulo Rechi Vita]

From: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>

This way we are able to test more complex scenarios.
---
 test/test-discovery |    8 --------
 1 file changed, 8 deletions(-)

diff --git a/test/test-discovery b/test/test-discovery
index 269c51c..08dfd0b 100755
--- a/test/test-discovery
+++ b/test/test-discovery
@@ -22,10 +22,6 @@ def device_found(address, properties):
 
 	print()
 
-def property_changed(name, value):
-	if (name == "Discovering" and not value):
-		mainloop.quit()
-
 if __name__ == '__main__':
 	dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
 
@@ -53,10 +49,6 @@ if __name__ == '__main__':
 			dbus_interface = "org.bluez.Adapter",
 					signal_name = "DeviceFound")
 
-	bus.add_signal_receiver(property_changed,
-			dbus_interface = "org.bluez.Adapter",
-					signal_name = "PropertyChanged")
-
 	adapter.StartDiscovery()
 
 	mainloop = GObject.MainLoop()
-- 
1.7.10.4

[PATCH BlueZ 13/14] core: Disable unnecessary auto connections

[João Paulo Rechi Vita]

From: Paulo Alcantara <paulo.alcantara@openbossa.org>

BlueZ host disconnects the link when encryption fails. ECONNABORTED
error is returned by the kernel when the connection is terminated by the
local host. This scenario commonly happens when authentication fails due
PIN or Key Missing.
---
 src/device.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/device.c b/src/device.c
index d81976e..d9c6708 100644
--- a/src/device.c
+++ b/src/device.c
@@ -1954,6 +1954,9 @@ static void att_error_cb(const GError *gerr, gpointer user_data)
 	struct att_callbacks *attcb = user_data;
 	struct btd_device *device = attcb->user_data;
 
+	if (gerr->code == ECONNABORTED)
+		return;
+
 	if (device->auto_connect == FALSE)
 		return;
 
-- 
1.7.10.4

[PATCH BlueZ 14/14] core: Re-connect for ECONNRESET or ECONNABORTED

[João Paulo Rechi Vita]

From: Claudio Takahasi <claudio.takahasi@openbossa.org>

This patch keeps scanning and re-connections active if the disconnection
reason is ECONNRESET(Remote Initiated Disconnection).

Re-connection is a behaviour determined by Profiles or by the upper
layer(user actions). For instance, HoG requires re-connection always
active, no matter if the previous disconnection reason was page timeout
or remote initiated disconnection (ECONNRESET). Some devices disconnects
after some idle time, connectable advertises are sent by the peripheral
when commanded by the user(eg: key pressed). Disconnection can be also
triggered by the local host (ECONNABORTED) using command line tools or
Disconnect method in the Device interface.

The peripheral dictates the re-connection controlling the connectable
advertises, BlueZ(central) needs to keep the scanning always active to
able to detect the advertises and trigger the connection.
---
 src/device.c |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/device.c b/src/device.c
index d9c6708..1b01a8c 100644
--- a/src/device.c
+++ b/src/device.c
@@ -1810,10 +1810,18 @@ static gboolean attrib_disconnected_cb(GIOChannel *io, GIOCondition cond,
 
 	g_slist_foreach(device->attios, attio_disconnected, NULL);
 
-	if (device->auto_connect == FALSE || err != ETIMEDOUT)
+	if (device->auto_connect == FALSE) {
+		DBG("Automatic connection disabled");
 		goto done;
+	}
 
-	adapter_connect_list_add(device_get_adapter(device), device);
+	/*
+	 * Keep scanning/re-connection active if disconnection reason
+	 * is page timeout, remote user terminated connection or local
+	 * initiated disconnection.
+	 */
+	if (err == ETIMEDOUT || err == ECONNRESET || err == ECONNABORTED)
+		adapter_connect_list_add(device_get_adapter(device), device);
 
 done:
 	attio_cleanup(device);
-- 
1.7.10.4