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softswitch v0.5.0

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@github-actions github-actions released this 07 Nov 23:36
· 19 commits to main since this release
v0.5.0
6bb1dd8
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Learn about vigilant mode.

Added

  • IGMP snooping (RFC 4541): igmp::Snooper tracks members per (VLAN, group) with membership
    timeouts and mrouter ports learned from queries. The data plane punts IGMP as a copy, floods
    queries, sends reports/leaves only to mrouter ports, and forwards multicast data to members and
    mrouter ports only (unregistered groups are never flooded; 224.0.0.0/24 always is).
  • Fast-leave on portfast (host) ports; on other ports a leave shortens the membership to 2 s and
    the querier sends a group-specific query so remaining listeners can re-report.
  • Snooping querier for networks without a multicast router (startup queries, then every query
    interval); sw1 is the querier in the test topology.
  • [no] ip igmp snooping [vlan ID | querier | fast-leave], ip igmp snooping query-interval,
    show ip igmp snooping; scripts/mcast.py test helper.

Fixed

  • TCP and UDP through the switch were dropped by receivers: senders on veth offload checksums
    and AF_PACKET delivers such frames with only the pseudo-header sum (TP_STATUS_CSUMNOTREADY).
    The data plane now completes those checksums before forwarding (#47).

Install on Raspberry Pi OS / Debian bookworm (arm64)

sudo apt install ./softswitch_0.5.0_arm64.deb

Verify downloads with sha256sum -c SHA256SUMS.

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