Date: Sat, 9 May 2020 17:41:07 +0200 From: Gordon Bergling <gbergling@googlemail.com> To: Michael Tuexen <tuexen@freebsd.org> Cc: freebsd-current@freebsd.org, david@catwhisker.org Subject: Re: Error loading tcp_bbr kernel module Message-ID: <6E2260AE-9209-45D5-B42D-F7DC801E7E5B@googlemail.com> In-Reply-To: <F9EDABC9-504C-4A27-AFD0-F0A1BAB656A2@googlemail.com> References: <20200509121851.GA59530@lion.0xfce3.net> <24D28CC3-AA45-412F-AF3D-9697A36FCB8D@freebsd.org> <F9EDABC9-504C-4A27-AFD0-F0A1BAB656A2@googlemail.com>
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Hi Michael, with a kernel config which includes include GENERIC options RATELIMIT options TCPHPTS applied, I could successfully use net.inet.tcp.functions_default=bbr to switch the TCP stack. Thanks for the fast help, Gordon > Am 09.05.2020 um 16:25 schrieb Gordon Bergling <gbergling@googlemail.com>: > > Hi Michael, > > thanks for your reply. > > I tried tcp_rack and tcp_bbr, since both are separate TCP stacks. I just posted the wrong error message. Both TCP stacks weren’t loadable as a kernel module with just the former mentioned build option. > > I currently have build running with both kernel options you mentioned. > > If the build is successful and I can change the default TCP stack to RACK and BBR I let you know. > > Further I didn’t find any documentation within tcp(4) regarding RACK and BBR. Since I am about to enhance the manpages, I’ll extent tcp(4) about information about RACK and BBR, but this is a different topic. > > Best regards, > > Gordon > >> Am 09.05.2020 um 14:37 schrieb Michael Tuexen <tuexen@freebsd.org>: >> >>> On 9. May 2020, at 14:18, Gordon Bergling <gbergling@googlemail.com> wrote: >>> >>> Greetings, >>> >>> I build -CURRENT with WITH_EXTRA_TCP_STACKS=1, but I got the following error >>> when I try to load for example tcp_bbr.ko. >>> z >>> kldload: an error occurred while loading module tcp_rack.ko. Please check dmesg(8) for more details. >> This indicates that you want to load the RACK stack. >> >> Please note that you need for BBR and RACK: >> options TCPHPTS >> in the kernel config and in addition to that for RACK >> options RATELIMIT >> >> Best regards >> Michael >>> >>> dmesg shows: >>> >>> KLD tcp_bbr.ko: depends on tcphpts - not available or version mismatch >>> linker_load_file: /boot/kernel/tcp_bbr.ko - unsupported file type >>> >>> Any hints on solving the problem? >>> >>> The kernel config is GENERIC. >>> >>> Best regards, >>> >>> Gordon >>> _______________________________________________ >>> freebsd-current@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-current >>> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >> >> _______________________________________________ >> freebsd-current@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-current >> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >help
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