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go-profinet v0.3.0

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@github-actions github-actions released this 27 Oct 15:41
v0.3.0
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Learn about vigilant mode.

Date: 2026-10-27
Previous release: v0.2.0

The rest of the software-only roadmap
(docs/research/SOFTWARE-ONLY-ROADMAP.md):
multiport devices, MRP, system redundancy as an experiment, SNMP, DCP
hardening, DHCP blocks, RT_CLASS_UDP codecs and a GSDX inspector. What each
feature covers, how it was verified and what it does not do is in
docs/research/FEATURE-COMPLETION-REPORT.md.
Feature coverage is not conformance: go-profinet is not certified, and no
time measured on the virtual network is a real-time claim.

One incompatible API change (apidiff against v0.2.0): dcp.ResponderOptions
is no longer comparable with ==, since its Policy holds an audit
callback. Behaviour changes: a
Connect that has both a bad LT and a bad RT class is refused naming the RT
class (IOCRProperties) instead of the LT; an AlarmCR over UDP is refused
naming its properties.

  • Multiport devices (roadmap 4A): l2/bridge, the learning switch of a
    multiport device (CPU port, per-port local ports for LLDP and MRP,
    forwarding/blocked states, DCP boundaries, a bounded FDB), and
    device.Config.Bridge: each port has its own MAC address, LLDP agent,
    link state, port data and peer check.
  • MRP (roadmap 4B): mrp.New runs a ring client or manager on a bridge
    (200 ms and 500 ms profiles); the PROFINET MRP records 0x8050–0x8054
    (pnio), device.Config.MRP, Device.MRPStatus,
    controller.DeviceConfig.MRP.
  • System redundancy S2 (roadmap 3): an experiment, off by default and not
    interoperable: device.Config.SystemRedundancy,
    controller.DeviceConfig.SystemRedundancy, Device.SetPrimary,
    Device.RedundancyAck; abort reasons 38–43 and the SRInfoBlock error
    code in pnio.
  • SNMP (roadmap 5, for CC-B features): snmp, a read-only SNMPv1/v2c agent
    with MIB-II and the LLDP-MIB; device.Config.SNMP (opt-in).
  • DCP: DHCP blocks of option 3 (dcp.DHCPParameter, Identity.DHCP,
    device.Config.DHCP, SetDHCP); an opt-in policy (dcp.Policy,
    device.Config.DCPPolicy): read-only DCP, per-source rate limits, audit
    events. Never called a security class.
  • RT_CLASS_UDP: codecs (rt.AppendUDPPayload, rt.DecodeUDP, the UDP
    fields of pnio); the device and the controller refuse it.
  • GSDX: gsdml/gsdx, a safe inspector of the OPC container (no PI rules,
    signatures not verified); gsdml.Severity decodes from its JSON.
  • Fixes, found by soaking: controller: no deadlock between an AR's
    teardown and a frame being handled (since v0.1.0); device: an AR being
    replaced (a rerun) counts once against MaxARs; a shared-device handover to
    an AR completing its startup is announced once it runs (v0.2.0);
    gsdml.Severity decodes from its JSON (v0.2.0).
  • Interop: pinned to profinet-interop v0.2.1; new decoder checks for SNMP,
    UDP-RT, the DCP DHCP blocks and the MRP records.
  • 25 fuzz targets (was 17); coverage 97.1 %.
Assets 2
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