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Subject: Re: Error loading tcp_bbr kernel module
From: Michael Tuexen <tuexen@freebsd.org>
In-Reply-To: <20200509121851.GA59530@lion.0xfce3.net>
Date: Sat, 9 May 2020 14:37:07 +0200
Cc: freebsd-current@freebsd.org
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References: <20200509121851.GA59530@lion.0xfce3.net>
To: Gordon Bergling <gbergling@googlemail.com>
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> On 9. May 2020, at 14:18, Gordon Bergling <gbergling@googlemail.com> =
wrote:
>=20
> Greetings,
>=20
> I build -CURRENT with WITH_EXTRA_TCP_STACKS=3D1, 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
>=20
> dmesg shows:
>=20
> KLD tcp_bbr.ko: depends on tcphpts - not available or version mismatch
> linker_load_file: /boot/kernel/tcp_bbr.ko - unsupported file type
>=20
> Any hints on solving the problem?
>=20
> The kernel config is GENERIC.
>=20
> Best regards,
>=20
> Gordon
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