[CCing the regression list, as it should be in the loop for regressions: https://docs.kernel.org/admin-guide/reporting-regressions.html] [TLDR: I'm adding this report to the list of tracked Linux kernel regressions; the text you find below is based on a few templates paragraphs you might have encountered already in similar form. See link in footer if these mails annoy you.] On 18.05.23 16:39, Andrey Rakhmatullin wrote: > Hello. I have a "MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless > Network Adapter" (14c3:0616) and when the commit c222f77fd4 ("wifi: mt76: > mt7921: fix rx filter incorrect by drv/fw inconsistent") is applied (found > by bisecting, checked by reverting it on v6.3) I have the following > problem on my machine: when I connect to my router no DHCPv4 exchange > happens, I don't see responses in tcpdump. My network setup is non-trivial > though, and it looks like the problem is specific to it, but I still > wonder if it's some bug in the aforementioned patch as my setup works with > all other devices and I would expect it to work as long as the network > packets sent by the device are the same. > > My setup is as follows: I have an ISP router which provides a 2.4GHz > network and another router (Xiaomi R4AC with OpenWRT) connected by > Ethernet to it that provides a 5GHz network and is configured as a "Relay > bridge" (using relayd) to forward packets to the ISP router and back. This > includes DHCPv4 packets, which are handled by the ISP router. tcpdump on > the machine with MT7922 shows that the DHCP requests are sent while the > responses are not received, while tcpdump on the bridge router shows both > requests and responses. > > I've tried connecting the machine to the ISP router network directly and > also to another AP (one on my phone) and those work correctly on all > kernels. > > Please let me know if I need to do any other debugging or troubleshooting > steps. Thank you. Thanks for the report. To be sure the issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression tracking bot: #regzbot ^introduced c222f77fd #regzbot title wifi: mt76: mt7921: DHCPv4 exchange broke #regzbot ignore-activity This isn't a regression? This issue or a fix for it are already discussed somewhere else? It was fixed already? You want to clarify when the regression started to happen? Or point out I got the title or something else totally wrong? Then just reply and tell me -- ideally while also telling regzbot about it, as explained by the page listed in the footer of this mail. Developers: When fixing the issue, remember to add 'Link:' tags pointing to the report (the parent of this mail). See page linked in footer for details. Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr That page also explains what to do if mails like this annoy you.
