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Date:      Thu, 23 Jan 2020 20:17:46 -0500
From:      Ryan Stone <rysto32@gmail.com>
To:        Gleb Smirnoff <glebius@freebsd.org>
Cc:        src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>,  svn-src-head <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r357051 - head/sys/dev/bge
Message-ID:  <CAFMmRNwhcV-%2BSsq_a1RZJYXC8wvnUDLDxdFeHD7PgL5wuierkg@mail.gmail.com>
In-Reply-To: <20200123230546.GG1268@FreeBSD.org>
References:  <202001231636.00NGawrr080128@repo.freebsd.org> <CAFMmRNyP5nKPZ62c9yRktH4t23GAgnpc2u8kHhUevUCu3doAQQ@mail.gmail.com> <20200123230546.GG1268@FreeBSD.org>

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On Thu, Jan 23, 2020 at 6:05 PM Gleb Smirnoff <glebius@freebsd.org> wrote:
>
> On Thu, Jan 23, 2020 at 02:17:33PM -0500, Ryan Stone wrote:
> R> What is a driver's responsibility now for entering/leaving the net epoch now?
>
> For drivers that are 'special', entering the net epoch is necessary. Special
> usually means running if_input outside network interrupt context.
>
> However, there is plan to generalize entering/exiting epoch for taskqueues
> and callouts.

Why on earth is it done that way rather than putting the network epoch
enter/exit in ether_input?  I'm with Ian; this sounds like a huge
layering violation.



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