Date: Fri, 24 Apr 2020 15:46:23 +0200 From: Johan Hendriks <joh.hendriks@gmail.com> To: freebsd-current@freebsd.org Subject: Re: How to enable tcp bbr in FreeBSD??? Message-ID: <5ff3b794-671d-9ab8-2127-38cfb6602039@gmail.com> In-Reply-To: <20200424133722.GL39563@home.opsec.eu> 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>
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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
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