The mesh settings.c module is a giant piece of code responsible for
storing the mesh stack configuration. Such approach makes it difficult
to control the data to be stored, breaks the stack modules'
encapsulation by forcing them to reveal the internal kitchen, which
leads to unpleasant issues such as #19799.
This commit moves the responsibility of storing the configuration
to corresponding modules while keeping control of the moment of storing
the configuration and of starting the stack after the settingss loading
is completed.
This doesn't introduce any abstraction between the mesh settings.c and
other modules as it will add more complexity and overhead than necessary
for the actual task.
Fixes#19850
Signed-off-by: Pavel Vasilyev <pavel.vasilyev@nordicsemi.no>
The K_MSEC macro evaluates its argument twice, which causes double
evaluation of some function calls in the mesh stack.
This removes all instances of function calls inside K_MSEC macros in the
mesh stack.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Friend node cache segment message for lpn, message with
sequence number can't change, since could cause lpn replay
attack.
Signed-off-by: Lingao Meng <menglingao@xiaomi.com>
Adds check for TTL max in the transport send functions, and moves
setting of default TTL to transport.
Fixes#29855.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Encapsulates the Heartbeat state and functionality in a separate
heartbeat module, removing all manipulation of the heartbeat state from
the transport and config server modules.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
The decision to set aszmic = 1 in the net_tx structure was made after
the variable was passed to the crypto context, creating a discrepancy
between the two when aszmic is 1.
Extracts transport encryption to a separate function.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Moves the virtual address labels to the transport layer, disconnecting
them from the configuration server.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
This is a major refactoring of the handling of the cryptographic
material of both the network and transport layers. The aim is to
encapsulate the key object manipulation, and improve overall modularity.
Pulls Applications and Subnets out of the bt_mesh and into separate
modules, with static storage types on the data. This has several
side-effects:
- The Config Server no longer operates directly on the bt_mesh.subs and
bt_mesh.apps lists, but goes through a public configuration interface,
following the pattern set in #27908.
- All iteration through the keys is done through iteration APIs
- Key resolution on RX and TX is centralized.
- Changes to the keys triggers events the other modules can register
handlers for.
- Friendship credentials are stored in the lpn and friend structures.
Part of #27842.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Starts the periodic heartbeat publish period at the end of the
publication, instead of at the ordering time. This ensures that the
heartbeat period doesn't get shortened by other enqueued messages.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Resolves a corner case where the segmented sending would be rescheduled
before the segments were done sending. This would happen if the
processing of each segment took longer than the retry delay. The
consequence of this was that some segments were resent multiple times at
the cost of other segments, occasionally causing a loss of transfers.
Rearranges, realigns and documents seg_tx structure bitfields in
transport.c. Removes bitwidth of counter fields, and collecting all flag
fields into one byte.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
The transport segmented TX nack and seg_pending fields must be at least
6 bits to avoid overflow for 32 segment messages. This change rearranges
the seg_tx fields to gather all state flag fields in one byte, while
making the counter fields whole bytes.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Increases the transport segmentented tx seg_o counter to 6 bits to avoid
overflow when sending 32 segments. The check in the send loop would
previously never be false, which causes segments to repeat
unnecessarily.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Fixes bug where the transport segmented tx would decrement the attempt
counter every time it ran out of buffers. If transport ran out of
buffers 4 times before the sending could complete, the transfer would
end prematurely.
Moves the attempt decrement to only execute when all segments have been
sent.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Ensures that friend messages are enqueued, even if the packet is
received with an appkey is unknown to the friend. Previously, sdu_recv
would return EINVAL if the appkey was unknown, which would prevent the
lower transport layer from adding the packet to the friend queue. This
is irrelevant for the logic in lower transport, and should not be
returned as an error.
Fixes#24014.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Convert bluetooth mesh to using k_timeout struct. Many of the mesh
modules uses timeout calculations, so it is most practical to keep
the s32_t type and only initialize a k_timeout_t struct when
calling the kernel.
Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
Fix seg_tx occupy when no segment not send
and allocate rx_seg when receive such message.
Fixes: #24101
Signed-off-by: Lingao Meng <mengabc1086@gmail.com>
Run the int_literal_to_timeout Coccinelle script to fix places where
it is clear that an integer duration is being passed where a timeout
value is required.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Allocates segmented message buffers as slabs in a common pool for RX and
TX. This reduces memory requirements for both TX and RX, as TX messages
can be stored without the network and advertising buffer overhead, and
RX can use only the slabs it needs, instead of allocating a full size
segmented message. This approach also removes the need for decrypting
the segments for each retransmission, reducing overall processing load.
Slab based segmentation for tx also introduces queuing of segmented
messages, which allows the application layer to send multiple messages
to the same destination without violating Bluetooth Mesh specification
v1.0.1, section 3.6.4.1. This mechanism is provided through a flag that
blocks segmented messages to a destination which a message is already
being sent to until the previous message finishes.
This changes the SDU size configuration to a symmetrical
RX_SEG_MAX/TX_SEG_MAX pair of configurations, plus a new segment pool
side configuration. It also removes the binding between the TX_SEG_MAX
config and the advertising buffers, reducing the minimum advertising
buffer count from 6 to 3.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
The Friend queue uses the message SeqAuth to determine whether the
message is already in the queue. To facilitate this, the SeqAuth is
passed around as a pointer throughout the transport modules. In the
bt_mesh_ctl_send functions, this parameter is also exposed in the API,
but the internal usage is inconsistent and buggy. Also, no one actually
uses this parameter.
- Removes seq_auth param from bt_mesh_ctl_send, instead passing NULL
directly to the friend module, to enforce its addition to the queue.
- Makes the seq_auth pointer const throughout the friend module.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Implements several changes to the transport layer segmented tx to
improve group message performance:
- Moves retransmit counter to tx context instead of per packet. As every
unacked packet is sent every retransmit, the retransmit counters would
be the same in each segment. This makes it easier to control progress.
- Delays the scheduling of the retransmit until the completion of the
last segment by adding a seg_pending counter. This is essentially the
same as the old behavior, except that the old behavior might retrigger
the sending before all segments are finished if the advertising is
slow.
- Allows the group transmits to stop as soon as all retransmits have
been exhausted, instead of timing out waiting for acks that won't
come. This allows group tx to finish without error.
- Fixes a bug where a failed TX would block IV update.
- Cancels any pending transmissions of acked segments.
- Reduces log level for several common group tx scenarios that aren't
erronous.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Fix problem of not checking if the remote device key is actually our
own. This bug was intruduced in
46a95f12ad and causes failure of models
that use app_idx BT_MESH_KEY_DEV_REMOTE. Since this is used by cfg_cli,
it was not possible to do self-configuration.
Signed-off-by: Tobias Svehagen <tobias.svehagen@gmail.com>
Refactor the handling of network nodes and their keys into a separate
Mesh Configuration Database (CDB). This, not only creates a separation
of the local node and the other nodes, but also makes it possible to
implement functions to manage the whole, or at least parts of the mesh
network.
Signed-off-by: Tobias Svehagen <tobias.svehagen@gmail.com>
The function bt_mesh_ctl_send() used to support maximum length of
11 bytes. The segmentation complies with the BLE Mesh Standard.
The ack is disabled in case of non unicast address.
Signed-off-by: Ahmed Hussein <ahmed_hussein_@hotmail.com>
In seg_tx_reset() in transport.c, set the busy flag to 0U
before doing adv buf unref, which will avoid sending
unnecessary adv packets in case the adv buf is already put
in the mesh adv_queue.
Fixes#20970
Signed-off-by: Maximus Liu <maximus.liu@gmail.com>
Make it possible to provision devices over advertising bearer (PB-ADV).
Many messages in the provisioning protocol are the same for provisioner
and device so much of the code could be reused by only changing when
they are expected to arrive.
This introduces to concept of local and remote device keys. The models
for cfg_cli and cfg_srv have been updated to reflect this concept. Both
the send and receive path in the transport layer have been updated to
support encrypting/decrypting with local and remote device keys.
When a node has been provisioned it is stored in bt_mesh_net.nodes. If
CONFIG_BT_SETTINGS is enabled, they are also saved to settings. If the
callback node_added in bt_mesh_prov has been set, it will be called for
every node that gets provisioned. This includes when they are retrieved
from settings.
The configuration CONFIG_BT_MESH_NODE_COUNT controls how many nodes that
can be provisioned.
Signed-off-by: Tobias Svehagen <tobias.svehagen@gmail.com>
Provides a utility function for getting an application key given a
subnet and an app ID. Primary use-case in friendship re-encryption.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Makes a define for the seqzero 13-bit mask in transport, and exposes it
in the header for use in the friend module.
Signed-off-by: Trond Einar Snekvik <Trond.Einar.Snekvik@nordicsemi.no>
Qualification test case MESH/NODE/FRND/FN/BV-08-C requires that we do
not store more messages than the reported Friend Queue size. The
implementation was so far opportunistic and stored more if it could
(it would later discard if necessary to make sure all queues can store
the required amount). The spec also requires the queues to have new
messages overwrite old ones (in the style of a circular buffer), so we
have to keep track of which buffers are part of the same segmented
message (so we discard all buffers belonging to the same message).
To pass the test case, add APIs to check for space in the Friend
queue, and track the number of buffers for each incoming segmented
message.
Fixes#18090
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The bt_mesh_trans_resend() function had no users, and had in fact not
even a prototype in a header file. Just remove it.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When sent solely to the Friend Queue the send callbacks were not
getting called for unsegmented messages.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
There are several places that require the send callbacks to be called
immediately. Reduce the code a bit by introducing a helper for this.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The code was incorrectly bailing out with "return 0" rather than
continue. Also, it was incorrectly making a reference to
tx->seg[seg_o] since when a PDU goes through the friend queue we don't
use the usual retransmission mechanism.
Fixes: #17932
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Mesh Profile 3.6.7.2 Publishing Heartbeat messages:
"
Triggered publishing of Heartbeat messages is enabled by
the Heartbeat Publication Features state (see Section 4.2.17.5):
...
- If the Low Power bit is set to 1, a Heartbeat message shall be
published when the node establishes or loses Friendship (see Section
3.6.6.1).
"
Fixes#18194
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When sending heartbeat messages triggered by feature changes the code
was trying to look up the configured publication subnet, in an
apparent attempt to figure out if publication is enabled or not. A
more appropriate way is to check for the heartbeat publication
destination address, and since we have a helper function this can be
done in a single place.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The heartbeat is a transport layer feature, so move it to transport.c.
This also opens the way to properly fix Friendship-established/lost
triggering for LPN role.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
We've already got GATT services in subsys/bluetooth/services so
subsys/bluetooth/mesh is a more natural place. Aditionally this aims
to fix the Kconfig dependencies to be able to use mesh together with
BT_CUSTOM (i.e. a custom, potentially non-HCI, host stack).
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2019-07-10 09:41:57 +03:00
Renamed from subsys/bluetooth/host/mesh/transport.c (Browse further)
