Re: git: c2c8e360d8c0 - main - tcp: virtualise net.inet.tcp.msl sysctl.

From: Gleb Smirnoff <glebius_at_freebsd.org>
Date: Sun, 26 Dec 2021 16:20:38 UTC
On Sun, Dec 26, 2021 at 03:06:04PM +0000, Alexander V. Chernikov wrote:
A> commit c2c8e360d8c0b8712158d334686d88f052aef819
A> Author:     Alexander V. Chernikov <melifaro@FreeBSD.org>
A> 
A>     tcp: virtualise net.inet.tcp.msl sysctl.
A>     
A>     VNET teardown waits 2*MSL (60 seconds by default) before expiring
A>      tcp PCBs. These PCBs holds references to nexthops, which, in turn,
A>      reference ifnets. This chain results in VNET interfaces being destroyed
A>      and moved to default VNET only after 60 seconds.
A>     Allow tcp_msl to be set in jail by virtualising net.inet.tcp.msl sysctl,
A>      permitting more predictable VNET tests outcomes.
A>     
A>     MFC after:      1 week
A>     Reviewed by:    glebius
A>     Differential Revision: https://reviews.freebsd.org/D33270

Thanks! Does our test framework use some kind of boilerplate jail config
so that we can enable smaller MSL for all tests at once?

-- 
Gleb Smirnoff