Date: Fri, 24 Apr 2020 16:08:32 +0200 From: Johan Hendriks <joh.hendriks@gmail.com> To: freebsd-current@freebsd.org Subject: Re: How to enable tcp bbr in FreeBSD??? Message-ID: <6042155a-297b-d85e-1d64-24d93da329a2@gmail.com> In-Reply-To: <CA%2BPGaYDNm4wPKTgY5z1bdj5OVyfq9UYhKZjs%2BSq_1iD9Yw_8vQ@mail.gmail.com> References: <20200424113135.GH39563@home.opsec.eu> <20200424115425.GA64056@mail.bsd4all.net> <20200424131837.GK39563@home.opsec.eu> <20200424.153055.531079989.sthaug@nethelp.no> <20200424133722.GL39563@home.opsec.eu> <5ff3b794-671d-9ab8-2127-38cfb6602039@gmail.com> <CA%2BPGaYDNm4wPKTgY5z1bdj5OVyfq9UYhKZjs%2BSq_1iD9Yw_8vQ@mail.gmail.com>
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Op 24-04-2020 om 15:51 schreef ykla: > WITH_EXTRA_TCP_STACKS=1 in make.conf ? And why not make it in kernel > default? > > 在 2020年4月24日星期五，Johan Hendriks <joh.hendriks@gmail.com > <mailto:joh.hendriks@gmail.com>> 写道： > > > Op 24-04-2020 om 15:37 schreef Kurt Jaeger: > > Hi! > > You can enable the stack globally on new connections without > restarting the box or daemons by running these commands: > > kldload tcp_bbr > > sysctl net.inet.tcp.functions_inherit_listen_socket_stack=0 > sysctl net.inet.tcp.functions_default=bbr > > This fails on the box running 13.0: > > # kldload tcp_bbr > kldload: can't load tcp_bbr: No such file or directory > > So it looks it has to be hooked to the build somehow ? > > And: man -k bbr has no results as well... > > The commit message says the following: > > > This commit adds BBR (Bottleneck Bandwidth and RTT) congestion > control. This > is a completely separate TCP stack (tcp_bbr.ko) that will be built > only if > you add the make options WITH_EXTRA_TCP_STACKS=1 and also include > the option > TCPHPTS. You can also include the RATELIMIT option if you have a > NIC interface that > supports hardware pacing, BBR understands how to use such a feature. > > > So i think you need te rebuild with the following option set > WITH_EXTRA_TCP_STACKS=1 > > regards > Johan Hendriks > > _______________________________________________ > freebsd-current@freebsd.org <mailto:freebsd-current@freebsd.org> > mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > <https://lists.freebsd.org/mailman/listinfo/freebsd-current>; > To unsubscribe, send any mail to > "freebsd-current-unsubscribe@freebsd.org > <mailto:freebsd-current-unsubscribe@freebsd.org>" > It looks like you need to add the following to the kernel as well. option TCPHPTS Maybe it is not ready for prime time, i do not know why it is not in the default build. Maybe ask the committer. regards, Johan
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