Date: Tue, 7 Sep 2021 07:32:29 +0000 From: "Youssef GHORBAL" <youssef.ghorbal@pasteur.fr> To: Rozhuk Ivan <rozhuk.im@gmail.com> Cc: Michael Tuexen <michael.tuexen@lurchi.franken.de>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: TCP connection ignore RST Message-ID: <2548343B-BF13-4C45-852B-659FA5C87F0C@pasteur.fr> In-Reply-To: <20210907051034.5669a02d@rimwks.local> References: <20210904023730.5eddd6fd@rimwks.local> <927CA9E9-AB74-443D-83A7-931325DB7686@lurchi.franken.de>,<20210907051034.5669a02d@rimwks.local>
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> On 7 Sep 2021, at 04:11, Rozhuk Ivan <rozhuk.im@gmail.com> wrote: > > On Sat, 4 Sep 2021 13:19:52 +0200 > Michael Tuexen <michael.tuexen@lurchi.franken.de> wrote: > >>>> On 4. Sep 2021, at 01:37, Rozhuk Ivan <rozhuk.im@gmail.com> wrote: >>> >>> Hi! >>> >>> >>> I have strange case: FreeBSD 12.2 ignore TCP RST from windows host >>> and continue retransmitting packets. sockstat show that socket >>> connected even after many tcp rst packets received. >>> >>> Any ideas how to fix it? >> Where is the trace taken? On the Windows side or on the FreeBSD side >> or somewhere else? Could you provide the .pcap file? >> > > From FreeBSD side. > > https://urldefense.com/v3/__https://reviews.freebsd.org/D28142__;!!JFdNOqOXpB6UZW0!-L413Hh53wGbdWDDnQnsq9zonlTlshjMS5-FW9WiH7ga68R8mqQ0AyNC6apUbMi-BORQwNV-$ e82353f84c58da9a5c38bd471a09936c16a5b6ea > https://urldefense.com/v3/__https://reviews.freebsd.org/D28143__;!!JFdNOqOXpB6UZW0!-L413Hh53wGbdWDDnQnsq9zonlTlshjMS5-FW9WiH7ga68R8mqQ0AyNC6apUbMi-BHNJHDEF$ d05d908d6d3c85479c84c707f931148439ae826b > sysctl net.inet.tcp.tolerate_missing_ts=1 > this fixes issue for me. Humm, the first commit already fixed the case of RST packets missing TS, and you are reporting that RST get ignored. I don’t see how the sysctl (meant for non-RST segments) could have helped. Youssef
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