Date: Sun, 19 Mar 2023 14:42:52 +0100 From: tuexen@freebsd.org To: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: assigning different TCP stacks to the jails Message-ID: <7BBAF016-3D98-40F2-9215-30E572B5857E@freebsd.org> In-Reply-To: <18985515-e3bf-1575-4abb-30e511a45ae7@plan-b.pwste.edu.pl> References: <18985515-e3bf-1575-4abb-30e511a45ae7@plan-b.pwste.edu.pl>
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> On 19. Mar 2023, at 14:12, Marek Zarychta = <zarychtam@plan-b.pwste.edu.pl> wrote: >=20 > Dear subscribers of the list, >=20 > TCP algo modules can be loaded/unloaded/changed on the fly. In FreeBSD = 14-CURRENT one can even change it on an active socket with tcpsso(8) = utility, but there is no way to run jail with different TCP stack. = Neither normal nor VNET jail support switching sysctl = net.inet.tcp.functions_default. >=20 > Is there any way to set TCP algo inherited through fork+exec in a = similar way setfib(1) assigns fib or perhaps assign TCP algo per VNET = instance? Hi Marek, so you are asking for the sysctl variable net.inet.tcp.functions_default = to be vnet specific? Best regards Michael >=20 > I am asking, since the almost perfect tcp_rack(4) applied on the host = is missing TCP-MD5 singing feature which is required in one of the = jails. >=20 > Cheers > --=20 > Marek Zarychta
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