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Date:      Fri, 10 Mar 2017 12:07:21 -0800
From:      Adrian Chadd <adrian.chadd@gmail.com>
To:        Navdeep Parhar <nparhar@gmail.com>
Cc:        Ryan Stone <rysto32@gmail.com>, Warner Losh <imp@bsdimp.com>, Sean Bruno <sbruno@freebsd.org>,  =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= <roger.pau@citrix.com>,  src-committers <src-committers@freebsd.org>,  "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,  "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r311849 - in head: . sys/amd64/conf sys/arm64/conf sys/conf sys/dev/e1000 sys/i386/conf sys/mips/conf sys/modules sys/modules/em sys/modules/igb sys/powerpc/conf
Message-ID:  <CAJ-VmonGN9oxB6SXfGQ5u1FSDbjo1A%2BFeRzcJtEd%2B78cLCcKHQ@mail.gmail.com>
In-Reply-To: <CAPFoGT9qDs%2Bu5erPNc-v825X7y%2B5icG0SNZj0OSrhoLy8ReJ9Q@mail.gmail.com>
References:  <201701100323.v0A3NMAI045868@repo.freebsd.org> <20170215100637.2xsyyu46odzig4c4@dhcp-3-221.uk.xensource.com> <f6022c26-ea27-1964-426a-dd61b66abe13@freebsd.org> <CANCZdfrj_t2Fmt4Er3oSU7Nf-Qois-Lzwn5DZ23i78c%2B22Crug@mail.gmail.com> <CAFMmRNyLuKZbMK3fVm=1G7Ky2KQsFOP4BNqkEhyRodxFZbBPpA@mail.gmail.com> <CAPFoGT9qDs%2Bu5erPNc-v825X7y%2B5icG0SNZj0OSrhoLy8ReJ9Q@mail.gmail.com>

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-adrian


On 10 March 2017 at 11:12, Navdeep Parhar <nparhar@gmail.com> wrote:
> On Fri, Mar 10, 2017 at 10:41 AM, Ryan Stone <rysto32@gmail.com> wrote:
>> There's also the issue that running "ifconfig igb0 blah" during startup =
will
>> cause if_igb to be automatically loaded by ifconfig.
>>
>> I guess we could add a dummy if_igb.ko that just has a dependency on
>> if_em.ko
>
> I do similar stuff in cxgbe (if_cxl.ko and if_cc.ko exist solely to
> drag in if_cxgbe.ko as a dependency).  In hindsight I wish I'd just
> added a list of ifnet names -> kld map to ifconfig instead.  It would
> have been an ugly hack but much simpler.
>
> Regards,
> Navdeep
>
>>
>> On Fri, Mar 10, 2017 at 1:13 PM, Warner Losh <imp@bsdimp.com> wrote:
>>>
>>> On Fri, Mar 10, 2017 at 11:06 AM, Sean Bruno <sbruno@freebsd.org> wrote=
:
>>> >
>>> >
>>> > On 02/15/17 03:06, Roger Pau Monn=C3=A9 wrote:
>>> >> On Tue, Jan 10, 2017 at 03:23:22AM +0000, Sean Bruno wrote:
>>> >>> Author: sbruno
>>> >>> Date: Tue Jan 10 03:23:22 2017
>>> >>> New Revision: 311849
>>> >>> URL: https://svnweb.freebsd.org/changeset/base/311849
>>> >>>
>>> >>> Log:
>>> >>>   Migrate e1000 to the IFLIB framework:
>>> >>>   - em(4) igb(4) and lem(4)
>>> >>>   - deprecate the igb device from kernel configurations
>>> >>>   - create a symbolic link in /boot/kernel from if_em.ko to if_igb.=
ko
>>> >>
>>> >> This linking causes mfsBSD to choke when building an image from HEAD=
.
>>> >> It tries
>>> >> to issue the following command:
>>> >>
>>> >> ${_v}${CP} -rp ${_BOOTDIR}/kernel ${WRKDIR}/disk/boot
>>> >>
>>> >> Which fails when finding the symbol link. I can send a patch to chan=
ge
>>> >> that to
>>> >> -Rp, which would work fine, but wouldn't it be better to either
>>> >> completely
>>> >> remove if_igb.ko, or simply copy if_em.ko to if_igb.ko?
>>> >>
>>> >> I'm wondering if for example anyone strips down it's /boot/kernel/
>>> >> manually, by
>>> >> removing unused modules, and what would happen if if_em.ko is remove=
d
>>> >> but not
>>> >> if_igb.ko.
>>> >>
>>> >> Roger.
>>> >>
>>> >>
>>> >
>>> > Well, this was my naive attempt to make upgrades for users to be
>>> > non-eventful in the event they have "if_igb_load=3DYES" in their
>>> > loader.conf instead of having it built into their kernel.
>>> >
>>> > If the -Rp works, I'll add that instead.
>>>
>>> The module name is encoded in the module itself. The boot loader looks
>>> it up to see which module to load. Maybe there's a way to fix it so
>>> both load from one file?
>>>
>>> Warner
>>>
>>
>



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