802.15.4g devices have a 2047 byte PDU.
So the assertion `netif->ipv6.mtu == IPV6_MIN_MTU` is too strict here.
This is only enforced on init, so changing the modulation at run-time
did not catch this bug.
To test, use e.g. `at86rf215` with
CFLAGS += -DAT86RF215_DEFAULT_PHY_MODE=IEEE802154_PHY_MR_OQPSK
fixes#14164
Add a message bus where threads can listen for nib events.
Currently only the GNRC_IPV6_NIB_EVENT_ADDR_VALID event is
implemented which informs subscribers that an address got
valid.
Enabled by the gnrc_netif_events pseudo module. Using an internal event
loop within the gnrc_netif thread eliminates the risk of lost interrupts
and lets ISR events always be handled before any send/receive requests
from other threads are processed.
The events in the event loop is also a potential hook for MAC layers and
other link layer modules which may need to inject and process events
before any external IPC messages are handled.
Co-Authored-By: Koen Zandberg <koen@bergzand.net>
This is the radio found in NXP Kinetis KW41Z, KW21Z. Only 802.15.4 mode
is implemented (KW41Z also supports BLE on the same transceiver).
The driver uses vendor supplied initialization code for the low level
XCVR hardware, these files were imported from KSDK 2.2.0 (framework_5.3.5)
This adds a driver for the SPI based AT86RF215 transceiver.
The chip supports the IEEE Std 802.15.4-2015 and IEEE Std 802.15.4g-2012 standard.
This driver supports two versions of the chip:
- AT86RF215: dual sub-GHz & 2.4 GHz radio & baseband
- AT86RF215M: sub-GHz radio & baseband only
Both radios support the following PHY modes:
- MR-FSK
- MR-OFDM
- MR-O-QPKS
- O-QPSK (legacy)
The driver currently only implements support for legacy O-QPSK.
To use both interfaces, add
GNRC_NETIF_NUMOF := 2
to your Makefile.
The transceiver is able to send frames of up to 2047 bytes according to
IEEE 802.15.4g-2012 when operating in non-legacy mode.
Known issues:
- [ ] dBm setting values are bogus
- [ ] Channel spacing for sub-GHz MR-O-QPSK might be wrong
- [ ] TX/RX stress test will lock up the driver on openmote-b
The comment exists since the introduction of the [original
implementation], but its meaning is unclear and misleading, as the code
doesn't do anything with link-local.
[original implementation]: https://github.com/RIOT-OS/RIOT/pull/3561
Rule 2 of the source address algorithm outlined in [RFC6724] states the
possible source addresses must also be compared among each other:
> Rule 2: Prefer appropriate scope.
> If Scope(SA) < Scope(SB): If Scope(SA) < Scope(D), then prefer SB and
> otherwise prefer SA. Similarly, if Scope(SB) < Scope(SA): If
> Scope(SB) < Scope(D), then prefer SA and otherwise prefer SB.
Our current implementation doesn't do that. It just checks if the scope
of a possible source is lesser than the scope of the destination
(which involves the second "If" in the rule).
This fix grants points according to the scope of an address. If the
scope matches, they get the highest points, ensuring that the selected
source will always be reachable from the destination.
[RFC6724]: https://tools.ietf.org/html/rfc6724
