This commit improves the `Mac::Filter` implementation. It mainly
removes the internally used `mFiltered` variable from the public
`otMacFilterEntry` definition and moves it inside `Mac::Filter`
private definitions.
This commit enhances the SLAAC support in OpenThread core. It contains
the following changes and features:
The `Utils::Slaac` class is updated to include all the related code
for managing SLAAC addresses (e.g., `Slaac` class maintains the
address buffer and directly subscribes to `Notifier` to listen for
Network Data changes to update SLAAC addresses).
The SLAAC address module is changed to support and use semantically
opaque IID generation algorithm (RFC 7217) instead of random IID
generation. This ensures that SLAAC addresses are random but stable
(i.e., the same SLAAC address is added on a device for the same
prefix) and aligns the implementation with Thread specification
requirement.
The semantically opaque IID generation logic is updated to follow RFC
7217 with SHA-256 as the pseudo-random function, and a 256 bit secret
key (generated once using true random number generator and saved in
non-volatile settings).
A new feature is added to allow SLAAC support to be enabled or
disabled during network operation. When enabled, SLAAC addresses are
generated and added to the interface. When disabled, any previously
added SLAAC address is removed.
This commit also adds "SLAAC prefix filter" feature which allows
OpenThread users to register a filter handler with SLAAC module. The
handler is invoked by SLAAC module when it is about to add a SLAAC
address based on a prefix. The returned boolean value from the handler
determines whether the address should be filtered or not.
`CoapSecure` is always used by joiner, border agent or commissioner.
DTLS should not be shared with the application `CoapSecure`.
This commit includes the following changes:
* allow multiple DTLS by using `TimerMilliContext`
* move `CoAP::mSocket` into `Dtls`
* move `ThreadNetif::mDtls` into `CoapSecure`
* remove unnecessary getters of `Dtls` and `CoapSecure`
This commit enables a node serve as the border agent of native commissioner
by adding the border agent UDP port to unsecure port when the security
policy allows.
To fully test verify this commit, we need a native commissioner, which I
will submit a separate commit to enable that.
mDidTx indicates whether a frame is received or transmitted, which is
only useful for capturing packets. This commit removes this field, and makes
this flag an argument to the pcap callback.
This commit changes the `SendOutOfBandFrameRequest()` implementation
to check `mOperation` and `mPending<>` state variables to determine
if MAC layer is still busy with a previous OOB tx request (instead of
using the `mOobFrame` pointer variable). This change makes the OOB tx
implementation behave similarly to other APIs (e.g., `ActiveScan()`
or `SendFrameRequest()`). This commit also enhances the documentation
for the OOB Send APIs in header files.
This commit refines Coap::Header into Coap::Message to avoid declaring
the big Coap::Header in stack which was causing problems in low-memory
systems such as CC2538.
A UDP reserves 56 bytes by default, which will not be used before an
outbound message goes down to transport layer and after an inbound
message is delievered to CoAP agent. To get better performance, this commit
utilizes these reserved bytes of cache basic header of CoAP message
including CoAP version, code, message ID and token. These cached data
are parsed when CoAP agent receives a CoAP message and are dumped into
the correct place of a CoAP Message before sending by lower layer.
To make sure there is enough reserved bytes for an inbound message, This
commit removes headers in UDP layer before delivering a ot::Message to
handlers.
Since RFC-7252 a number of additions have been made to the CoAP
Content-Format registry which is maintained by the IANA. This patch
updates the list in OpenThread. Notably:
- Standards references are made for each entry
- Some invalid assignments have been removed (notably PKCS10, PKCS7 and
JWS)
- New entries have been added for COSE, JSON patches, merge patches,
CBOR, CWT, CoAP groups, SENML and SENSML.
Abtin Keshavarzian