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.hendr...@gmail.com <mailto:joh.hendr...@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

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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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