Mastodawn

The #rtl9300 datasheets also read as if they had planned to provide some easy, built-in trapping options for #IGMP / #MLD reports, as they had for #rtl83xx, based on their new ACL / packet inspection engine. But that they had scraped that and postponed that to their bigger #rtl9310 chips.
#multicast

T_X 14h ago

For the #Realtek #rtl9300 (excluding #rtl9310) switch chips for #OpenWrt further datasheet readings and bit fumbling brought me to the conclusion (for now) that it seems that there is no easy way for #IGMP / #MLD report trapping anymore. Hence #multicast snooping support for #rtl9300 on OpenWrt will be more tricky...
For #rtl93xx they introduced a new, powerful ACL / packet inspection system. And trapping has been changed quite a bit compared to #rtl83xx.

T_X Feb 6

Patchset v2 is out for the Linux bridge, to reduce checks in the #multicast fast path, and to later propagate a safety multicast (in)active state to #switchdev/#DSA:
https://patchwork.kernel.org/project/netdevbpf/cover/[email protected]/
Includes some fixes and got some nice Linux selftests: https://patchwork.kernel.org/project/netdevbpf/patch/[email protected]/
This is also the version currently used in this OpenWrt draft PR for #realtek / #rtl83xx (v6 - v8): https://github.com/openwrt/openwrt/pull/18780

#rtldsa #rtl93xx

[net-next,v2,00/14] net: bridge: reduce multicast checks in fast path - Patchwork

T_X Jan 15

Finally got a v6, of a #multicast PR for #OpenWrt for the #Realtek / #rtl83xx target out: https://github.com/openwrt/openwrt/pull/18780
The whole thing, especially for the Linux bridge + DSA got bigger than expected (from ~4 patches to now 16...). But djfe was so kind to help with rebasing to 6.12 on OpenWrt. Then also got stuck on a regression in OpenWrt, but @cuechan's impartial view and technical expertise helped with that.
Next will need to circle back to upstream Linux for a new submission (after some sleep...)

realtek: various multicast snooping fixes and improvements by T-X · Pull Request #18780 · openwrt/openwrt

The following patchset is to get the rtl83xx multicast snooping behaviour closer to the one of a pure software Linux bridge in the following ways and to fix a few issues: Firstly, a plain Linux bri...

GitHub

T_X Jan 8

This #rtl83xx switch is driving me crazy. I can't get it to work anymore with any #OpenWrt image I'm trying to throw at it. And it used to work in the past... However it likely isn't a hardware defect either, as booting the same thing with an old vendor image from its flash works fine...
I must be missing something obvious...

T_X Sep 2, 2025

I just wanted to make a little #multicast safety feature in the Linux bridge available to #switchdev + #DSA, too, to use it on #rtl83xx / #rtl93xx #Realtek drivers / switches later. One suggestion on the PR was like, maybe we could do the locking differently or use atomics. Me several hours later:

T_X Aug 7, 2025

Interesting, the #XikeStor / #Seekswan SKS8300-12X switch seems to be rtl93xx based, too, with the most SFP ports I've seen for a #Realtek #rtl93xx or #rtl83xx device. According to this page it should be #rtl9313: http://visit.seekswan.com:6555/xksupport/SKS8300-12X.htm
And maybe it wouldn't be too hard to add to #OpenWrt as the smaller XikeStor SKS8300-8X is already supported there: https://openwrt.org/toh/hwdata/xikestor/xikestor_sks8300-8x

兮克SKS8300-12X交换机介绍

兮克SKS8300-12X交换机产品介绍

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T_X Jun 23, 2025

@txt_file replaced the switches at the #Nobreakspace with a second hand 52 ports switch and a 24 ports PoE switch - both with a #Realtek / #rtl83xx chip and OpenWrt support, 50€ each on kleinanzeigen.de. But yeah, 10 and even 40 Gbit/s ports and 750W for PoE on this Mikrotik one sound nice :D.

T_X Jun 13, 2025

Nice talk at the @battlemesh about #Realtek #switches running #OpenWrt. To get people even more excited about it this is how an OpenWrt #LuCI can look like with 52 ports :D. This D-Link DGS-1210-52 F1 was obtained for just 50€ on a German second hand online market place (kleinanzeigen.de) and is now running in the #Nobreakspace. Always make sure to pick the correct revision though, there are switches with very similar names but which don't use a Realtek chip.
#rtl83xx #rtl93xx

T_X May 18, 2025

Use #BSD for good networking, nuff said... Use #OPNsense for a firewall/router, nuff said...

Me trying to use #multicast snooping with this in our hackspace: After several hours of debugging, realizing it's not bc. of the #OpenWrt powered, #rtl83xx based switch I've added, nor the new patches I've made and added to it. But because of this two years old, ignored #OPNsense (or #FreeBSD?) bug with #MLD: https://github.com/opnsense/core/issues/6247
😒 😤

IPv6 MLD listener report going to wrong interface · Issue #6247 · opnsense/core

Important notices Before you add a new report, we ask you kindly to acknowledge the following: I have read the contributing guide lines at https://github.com/opnsense/core/blob/master/CONTRIBUTING....

GitHub