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This patch makes sure that conn_params that were created just for
explicit_connect, will get properly deleted during cleanup.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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After clearing the params->explicit_connect variable the parameters
may need to be either added back to the right list or potentially left
absent from both the le_reports and the le_conns lists.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Devices undergoing an explicit connect should not have their
conn_params struct removed by the mgmt Remove Device command. This
patch fixes the necessary checks in the command handler to correct the
behavior.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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We can't use hci_explicit_connect_lookup() since that would only cover
explicit connections, leaving normal reconnections completely
untouched. Not using it in turn means leaving out entries in
pend_le_reports.
To fix this and simplify the logic move conn params from the reports
list to the pend_le_conns list for the duration of an explicit
connect. Once the connect is complete move the params back to the
pend_le_reports list. This also means that the explicit connect lookup
function only needs to look into the pend_le_conns list.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The code should never directly call hci_conn_hash_del since many
cleanup & reference counting updates would be lost. Normally
hci_conn_del is the right thing to do, but in the case of a connection
doing LE scanning this could cause a deadlock due to doing a
cancel_delayed_work_sync() on the same work callback that we were
called from.
Connections in the LE scanning state actually need very little cleanup
- just a small subset of hci_conn_del. To solve the issue, refactor
out these essential pieces into a new hci_conn_cleanup() function and
call that from the two necessary places.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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When disable/enable scan command is issued twice, some controllers
will return an error for the second request, i.e. requests with this
command will fail on some controllers, and succeed on others.
This patch makes sure that unnecessary scan disable/enable commands
are not issued.
When adding device to the auto connect whitelist when there is pending
connect attempt, there is no need to update scan.
hci_connect_le_scan_cleanup is conditionally executing
hci_conn_params_del, that is calling hci_update_background_scan. Make
the other case also update scan, and remove reduntand call from
hci_connect_le_scan_remove.
When stopping interleaved discovery the state should be set to stopped
only when both LE scanning and discovery has stopped.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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There are several actions that smp_conn_security() might make that do
not require a valid SMP context (conn->smp pointer). One of these
actions is to encrypt the link with an existing LTK. If the SMP
context wasn't initialized properly we should still allow the
independent actions to be done, i.e. the check for the context should
only be done at the last possible moment.
Reported-by: Chuck Ebbert <cebbert.lkml@gmail.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org # 4.0+
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Synchronous connections are initially created with type eSCO.
Link manager may reject proposed link parameters, which triggers
connection setup retry with a different set. Link type embedded
in responses should be disregarded until Synchronous Connect Complete
returns Success (0x00). Current code updates link type every time
which creates an issue when link type changes to SCO and back to eSCO
on further attepts.
Issue happens with BlackBerry 9100 and 9700 with Intel WilkinsPeak
on third connection setup attept
2015-05-18 01:27:57.332242 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
handle 256 voice setting 0x0060 ptype 0x0380
2015-05-18 01:27:57.333604 > HCI Event: Command Status (0x0f) plen 4
Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
2015-05-18 01:27:57.334614 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
status 0x1a handle 0 bdaddr 30:7C:30:B3:A8:86 type SCO
Error: Unsupported Remote Feature / Unsupported LMP Feature
2015-05-18 01:27:57.334895 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
handle 256 voice setting 0x0060 ptype 0x0380
2015-05-18 01:27:57.335601 > HCI Event: Command Status (0x0f) plen 4
Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
2015-05-18 01:27:57.336610 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
status 0x1a handle 0 bdaddr 30:7C:30:B3:A8:86 type SCO
Error: Unsupported Remote Feature / Unsupported LMP Feature
2015-05-18 01:27:57.336685 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
handle 256 voice setting 0x0060 ptype 0x03c8
2015-05-18 01:27:57.337603 > HCI Event: Command Status (0x0f) plen 4
Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
2015-05-18 01:27:57.342608 > HCI Event: Max Slots Change (0x1b) plen 3
handle 256 slots 1
2015-05-18 01:27:57.377631 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
status 0x00 handle 257 bdaddr 30:7C:30:B3:A8:86 type eSCO
Air mode: CVSD
Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This makes the function sco_conn_del have a return type of void now
due to this function always running successfully and thus never
needing to signal its caller when a non recoverable internal failure
occurs by returning a error code to its respective caller.
Signed-off-by: Nicholas Krause <xerofoify@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2015-08-16
Here's what's likely the last bluetooth-next pull request for 4.3:
- 6lowpan/802.15.4 refactoring, cleanups & fixes
- Document 6lowpan netdev usage in Documentation/networking/6lowpan.txt
- Support for UART based QCA Bluetooth controllers
- Power management support for Broeadcom Bluetooth controllers
- Change LE connection initiation to always use passive scanning first
- Support for new Silicon Wave USB ID
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
drivers/net/ethernet/cavium/Kconfig
The cavium conflict was overlapping dependency
changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch introduced the 6lowpan netdev private data struct. We name it
lowpan_priv and it's placed at the beginning of netdev private data. All
lowpan interfaces should allocate this room at first of netdev private
data. 6LoWPAN LL private data can be allocate by additional netdev private
data, e.g. dev->priv_size should be "sizeof(struct lowpan_priv) +
sizeof(LL_LOWPAN_PRIVATE_DATA)".
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The usually way to get the btle lowpan private data is to use the
introduced lowpan_dev inline function. This patch will cleanup by using
lowpan_dev consequently.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Currently, when trying to connect to already paired device that just
rotated its RPA MAC address, old address would be used and connection
would fail. In order to fix that, kernel must scan and receive
advertisement with fresh RPA before connecting.
This patch enables new connection establishment procedure. Instead of just
sending HCI_OP_LE_CREATE_CONN to controller, "connect" will add device to
kernel whitelist and start scan. If advertisement is received, it'll be
compared against whitelist and then trigger connection if it matches.
That fixes mentioned reconnect issue for already paired devices. It also
make whole connection procedure more robust. We can try to connect to
multiple devices at same time now, even though controller allow only one.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Currently, when trying to connect to already paired device that just
rotated its RPA MAC address, old address would be used and connection
would fail. In order to fix that, kernel must scan and receive
advertisement with fresh RPA before connecting.
This patch makes sure that when new procedure is in use, and we're stuck
in scan phase because no advertisement was received and timeout happened,
or app decided to close socket, scan whitelist gets properly cleaned up.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Currently, when trying to connect to already paired device that just
rotated its RPA MAC address, old address would be used and connection
would fail. In order to fix that, kernel must scan and receive
advertisement with fresh RPA before connecting.
This path makes sure that after advertisement is received from device that
we try to connect to, it is properly handled in check_pending_le_conn and
trigger connect attempt.
It also modifies hci_le_connect to make sure that connect attempt will be
properly continued.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Currently, when trying to connect to already paired device that just
rotated its RPA MAC address, old address would be used and connection
would fail. In order to fix that, kernel must scan and receive
advertisement with fresh RPA before connecting.
This patch adds hci_connect_le_scan with dependencies, new method that
will be used to connect to remote LE devices. Instead of just sending
connect request, it adds a device to whitelist. Later patches will make
use of this whitelist to send conenct request when advertisement is
received, and properly handle timeouts.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch adds hci_lookup_le_connect method, that will be used to check
wether outgoing le connection attempt is in progress.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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We should be passing the pointer itself instead of the address of the
pointer.
This was a copy and paste bug when we replaced the calls to
hci_send_cmd(). Originally, the arguments were "len, cp" but we
overwrote them with "sizeof(cp), &cp" by mistake.
Fixes: b3d3914006a0 ('Bluetooth: Move amp assoc read/write completed callback to amp.c')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch fixes how MGMT_EV_NEW_LONG_TERM_KEY event is build. Right now
val vield is filled with only 1 byte, instead of whole value. This bug
was introduced in
commit 1fc62c526a57 ("Bluetooth: Fix exposing full value of shortened LTKs")
Before that patch, if you paired with device using bluetoothd using simple
pairing, and then restarted bluetoothd, you would be able to re-connect,
but device would fail to establish encryption and would terminate
connection. After this patch connecting after bluetoothd restart works
fine.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Conflicts:
arch/s390/net/bpf_jit_comp.c
drivers/net/ethernet/ti/netcp_ethss.c
net/bridge/br_multicast.c
net/ipv4/ip_fragment.c
All four conflicts were cases of simple overlapping
changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fix a possible race after calling register_netdev. After
calling netdev_register it could be possible that netdev_ops callbacks
use the uninitialized private data of lowpan_dev. By moving the
initialization of this data before netdev_register we can be sure that
initialized private data is be used after netdev_register.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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There is no need to use the safe version of list_for_each here.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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To avoid amp module hooks from hci_event.c
Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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To avoid amp module hooks from hci_event.c
Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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To avoid a2mp module hooks from hci_event.c and send
getinfo response operation only required by a2mp module,
we can move this callback to a2mp.c
Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Move A2MP Module under BT_HS config option and allow
the user have flexible option to choose the feature only
they need
a2mp_discover_amp() & a2mp_channel_create() are a2mp module
entry point for master and slave, and this is dynamic
invoked depends on the userspace or remote request, then
we defined their implementation depends on BT_HS config
Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Move IRK checking logic in preparation to new connect method. Also
make sure that MGMT_STATUS_INVALID_PARAMS is returned when non
identity address is passed to ADD_DEVICE. Right now MGMT_STATUS_FAILED
is returned, which might be misleading.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Add a timeout to prevent the do while loop running in an
infinite loop. This ensures that the channel will be
instructed to close within 10 seconds so prevents
l2cap_sock_shutdown() getting stuck forever.
Returns -ENOLINK when the timeout is reached. The channel
will be subequently closed and not all data will be ACK'ed.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Use msecs_to_jiffies() instead of using HZ so that it
is easier to specify the time in milliseconds.
Also add a #define L2CAP_WAIT_ACK_POLL_PERIOD to specify the 200ms
polling period so that it is defined in a single place.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Add helpful BT_DBG debug to l2cap_sock_shutdown()
and __l2cap_wait_ack() so that the code flow can
be analysed.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Use chan->state instead of chan->conn because waiting
for ACK's is only possible in the BT_CONNECTED state.
Also avoids reference to the conn structure so makes
locking easier.
Only call __l2cap_wait_ack() when the needed condition
of chan->unacked_frames > 0 && chan->state == BT_CONNECTED
is true and convert the while loop to a do while loop.
__l2cap_wait_ack() change the function prototype to
pass in the chan variable as chan is already available
in the calling function l2cap_sock_shutdown(). Avoids
locking issues.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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During execution of l2cap_sock_shutdown() which might
sleep, the sk and chan structures can be in an unlocked
condition which potentially allows the structures to be
freed by other running threads. Therefore, there is a
possibility of a malfunction or memory reuse after being
freed.
Keep the sk and chan structures alive during the
execution of l2cap_sock_shutdown() by using their
respective hold and put functions. This allows the structures
to be freeable at the end of l2cap_sock_shutdown().
Signed-off-by: Kautuk Consul <Kautuk_Consul@mentor.com>
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The l2cap_conn->smp pointer may be NULL for various valid reasons where SMP has
failed to initialize properly. One such scenario is when crypto support is
missing, another when the adapter has been powered on through a legacy method.
The smp_conn_security() function should have the appropriate check for this
situation to avoid NULL pointer dereferences.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org # 4.0+
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Commit 835a6a2f8603 ("Bluetooth: Stop sabotaging list poisoning")
thought that the code was sabotaging the list poisoning when NULL'ing
out the list pointers and removed it.
But what was going on was that the bluetooth code was using NULL
pointers for the list as a way to mark it empty, and that commit just
broke it (and replaced the test with NULL with a "list_empty()" test on
a uninitialized list instead, breaking things even further).
So fix it all up to use the regular and real list_empty() handling
(which does not use NULL, but a pointer to itself), also making sure to
initialize the list properly (the previous NULL case was initialized
implicitly by the session being allocated with kzalloc())
This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
An.
[ I would normally expect to get this through the bt tree, but I'm going
to release -rc1, so I'm just committing this directly - Linus ]
Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Original-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Original-by: Marcel Holtmann <marcel@holtmann.org>:
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If the user->list is deleted with list_del(), it doesn't initialize the
entry which can cause the issue with list_empty(). According to the
comment from the list.h, list_empty() returns false even if the list is
empty and put the entry in an undefined state.
/**
* list_del - deletes entry from list.
* @entry: the element to delete from the list.
* Note: list_empty() on entry does not return true after this, the entry is
* in an undefined state.
*/
Because of this behavior, list_empty() returns false even if list is empty
when the device is reconnected.
So, user->list needs to be re-initialized after list_del(). list.h already
have a macro list_del_init() which deletes the entry and initailze it again.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Tested-by: Jörg Otte <jrg.otte@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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When new hidp session is created, list header in l2cap_user is
not initialized and this causes list_empty() to fail in
l2cap_register_user() even if l2cap_user list is empty.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Tested-by: Jörg Otte <jrg.otte@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Rework the logic of checking for a valid adv_instance for non-zero
cp->instance values. Without this change we may get (false positive)
warnings as follows:
>> net/bluetooth/mgmt.c:7294:29: warning: 'adv_instance' may be used
uninitialized in this function [-Wuninitialized]
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Use zallog for adv_instance allocation instead of kmalloc + memset.
This also fixes the following coccinelle warning:
>> net/bluetooth/hci_core.c:2693:17-24: WARNING: kzalloc should be
used for adv_instance, instead of kmalloc/memset
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch increments the management interface revision due to
introduction of new multi-advertising feature and various bug fixes.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Now that the obsolete adv_instance is no longer being referenced
anywhere in the code it can be removed without breaking the build.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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During service discovery, advertising will be disabled. This patch
ensures that it is correctly being re-enabled, both for configuration
made via set advertising and add advertising, once the scanning
times out.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch ensures that instance advertising is correctly canceled
before starting a le scan.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Advertising instances programmed while powered off should be advertised
once the device is powered. This patch ensures that all combinations
of setting and/or adding advertising configuration while powered off
will be correctly activated on power on.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The remove_advertising() and remove_advertising_complete() functions
had instance identifiers hard coded. Notably, when passing in 0x00 as
an instance identifier to signal that all instances should be removed
then the mgmt API would return a hard coded 0x01 rather than returning
the expected value 0x00. This bug is being fixed by always referencing
the instance identifier from the management API call instead.
remove_advertising() is refactored to use the new dynamic advertising
instance list. The logic is being changed to make multi-instance
advertising actually work, notably the schedule_adv_instance() method is
being referenced to make sure that other instances will continue to
advertise even if one instance is being removed.
The code is made more readable by factoring advertising instance
management and initialization into the low-level
hci_remove_adv_instance() and hci_adv_instances_clear() functions.
The method now references the clear_adv_instance() helper method to
remove duplicate logic and code.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The add_advertising() and add_advertising_complete() functions reference
the now obsolete hdev->adv_instance struct. Both methods are being
refactored to access the dynamic advertising instance list instead.
This patch also introduces all logic necessary to actually deal with
multiple instance advertising. Notably the mgmt_adv_inst_expired() and
schedule_adv_inst() method are being referenced to schedule instances in
a round robin fashion.
This patch also introduces a "pending" flag into the adv_info struct.
This is necessary to identify and remove recently added advertising
instances when the HCI commands return with an error status code.
Otherwise new advertising instances could be leaked without properly
informing userspace about their existence.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The clear_adv_instance() function could not clean up multiple
advertising instances previously. It is being changed to provide both, a
means to clean up a single instance and cleaning up all instances at
once.
An additional instance parameter is being introduced to achieve this.
Passing in 0x00 to this parameter signifies that all instances should be
cleaned up. This semantics has been chosen similarly to the semantics of
the instance parameter in the remove_advertising() function.
When removing a single instance the method also ensures that another
instance will be scheduled if available. When the currently advertising
method is being removed, it will be canceled immediately.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The set_advertising() and set_advertising_complete() methods rely on
the now obsolete hci_dev->adv_instance structure. We replace this
reference by an equivalent access to the newly introduced dynamic
advertising instance list.
This patch introduces a helper function that schedules an advertising
instance correctly calculating advertising timing based on the timeout
and duration settings of the instance. Scheduling is factored into
its own function for readability and code sharing.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The create_instance_adv_data() function could not deal with
multiple advertising instances previously. This is being fixed by
retrieving advertising instances from the newly introduced dynamic
advertising instance list.
Signed-off-by: Florian Grandel <fgrandel@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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