netdev - Re: [PATCH v3 0/6] Add namespace awareness to Netlink methods

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Message-ID: <CAF2d9jg01+AjBHJtMMpzdqV1iyGd-vZzVS96nmGmcVJLK82D3A@mail.gmail.com>
Date:   Fri, 8 Nov 2019 10:59:55 -0800
From:   Mahesh Bandewar (महेश बंडेवार) 
        <maheshb@...gle.com>
To:     Jonas Bonn <jonas@...rbonn.se>
Cc:     David Ahern <dsahern@...il.com>, nicolas.dichtel@...nd.com,
        linux-netdev <netdev@...r.kernel.org>,
        linux-kernel@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: Re: [PATCH v3 0/6] Add namespace awareness to Netlink methods

On Fri, Nov 8, 2019 at 7:36 AM Jonas Bonn <jonas@...rbonn.se> wrote:
>
>
>
> On 07/11/2019 22:11, David Ahern wrote:
> > On 11/7/19 1:40 PM, Mahesh Bandewar (महेश बंडेवार) wrote:
> >> On Thu, Nov 7, 2019 at 5:30 AM Jonas Bonn <jonas@...rbonn.se> wrote:
> >>>
> >>> Changed in v3:
> >>> - added patch 6 for setting IPv6 address outside current namespace
> >>> - address checkpatch warnings
> >>> - address comment from Nicolas
> >>>
> >>> Changed in v2:
> >>> - address comment from Nicolas
> >>> - add accumulated ACK's
> >>>
> >>> Currently, Netlink has partial support for acting outside of the current
> >>> namespace.  It appears that the intention was to extend this to all the
> >>> methods eventually, but it hasn't been done to date.
> >>>
> >>> With this series RTM_SETLINK, RTM_NEWLINK, RTM_NEWADDR, and RTM_NEWNSID
> >>> are extended to respect the selection of the namespace to work in.
> >>>
> >> This is nice, is there a plan to update userspace commands using this?
> >
> > I'm hoping for an iproute2 update and test cases to validate the changes.
> >
>
> I'm looking into it.  The change to iproute2 to support
> (namespace,index) pairs instead of just (index) to identify interfaces
> looks to be invasive.  The rest of it looks like trivial changes.
>
> I've got all these kernel patches tested against my own "namespace aware
> network manager" that I'm writing for a customer with a particular use
> case.  iproute2 wasn't actually in play here.
>
I'll echo David's comment for iproute2 as well as tests to ensure this
new behavior is usable and healthy.

> /Jonas