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Date:      Fri, 18 Jan 2013 00:07:06 +0100
From:      Damien Fleuriot <ml@my.gd>
To:        Steve Kiernan <stevek@juniper.net>
Cc:        "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject:   Re: Proposal for changes to network device drivers and network stack (RFC)
Message-ID:  <6AC27A59-9B9E-4D60-A5E4-E9C8FEF50F1D@my.gd>
In-Reply-To: <20130117165323.5bfb8ff5@stevek-ubuntu>
References:  <CC6EF6B2.1917A%anshukla@juniper.net> <f1d8693fa83965f0d4a485a2db7e603b@novexsolutions.com> <50F868FF.5060506@networx.ch> <20130117165323.5bfb8ff5@stevek-ubuntu>

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On 17 Jan 2013, at 22:53, Steve Kiernan <stevek@juniper.net> wrote:

> On Thu, 17 Jan 2013 22:11:27 +0100
> Andre Oppermann <oppermann@networx.ch> wrote:
>=20
>> On 17.01.2013 20:23, Stephen J. Kiernan wrote:
>>> The network stack as a module patch has been separated out and can be fo=
und in the following location:
>>> http://people.freebsd.org/~marcel/Juniper/netstack-v2.diff
>>=20
>> This is quite some work and a lot of changes which will a moment to revie=
w.
>>=20
>> Can you describe the concept and the terminology you're using here some m=
ore?
>> What is a netstack module and what is its scope?  How does it relate to V=
NET?
>> What is an IOCGROUP? etc.  All this is probably obvious to you but not ye=
t for
>> us.
>=20
> Sure, not a problem. First, I will repeat here what Anu sent out previousl=
y as a description of the netstack changes.
>=20
>> Today, not compiling networking stack related files in the kernel breaks
>> the kernel build due to dependencies the OS has on the network stack
>> (calling into functions in the network stack). Network stack module isn't=

>> there. We've added these in JUNOS. The benefits for us are obvious (we ca=
n
>> load our own version of network stack if we desire!), but most likely thi=
s
>> functionality will benefit others too.
>>=20
>> The detailed implementation is indicated later in this email. In short th=
e
>> changes are:
>>=20
>> - Load network stack as a module. For now via loader, not dynamically
>> loaded. (Is there interest in dynamic loading?).

I speak only for myself but I think dynamic loading would avoid a lot of tro=
uble with/for people who don't read UPDATING carefully and forget to adjust l=
oader.conf...




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