netdev - Re: [PATCH net-next v2 3/3] vxlan: move flag sets to use a helper func

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Date:   Thu, 29 Nov 2018 08:05:49 -0800
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     sd@...asysnail.net
Cc:     David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2 3/3] vxlan: move flag sets to use a helper func

On Thu, Nov 29, 2018 at 7:55 AM Sabrina Dubroca <sd@...asysnail.net> wrote:
>
> 2018-11-29, 07:27:17 -0800, Roopa Prabhu wrote:
> > On Thu, Nov 29, 2018 at 6:19 AM Sabrina Dubroca <sd@...asysnail.net> wrote:
> > > 2018-11-28, 14:27:59 -0800, Roopa Prabhu wrote:
> > > nit: This patch would have been easier to review if it came first in
> > > the series. Converting:
> >
> > I considered that. But the first patch really removes some checks
> > making it easier for the follow-on patches...and that mostly dictated
> > the order.
>
> ok.
>
> > >     if (nla_get_u8(data[IFLA_VXLAN_FOO]))
> > >         conf->flags |= VXLAN_F_FOO;
> > >
> > > to this new helper, which in effect does
> > >
> > >     if (nla_get_u8(data[IFLA_VXLAN_FOO]))
> > >         conf->flags |= VXLAN_F_FOO;
> > >     else
> > >         conf->flags &= ~VXLAN_F_FOO;
> > >
> > > seems to change behavior, but since you're (unless I missed one) only
> > > applying it to flags that couldn't be changed before patch 1, it looks
> > > fine.
> >
> > It does not change behavior...the earlier code only supported the
> > flags during create time and did not support changing of the flag with
> > changelink.
> > this patch adds changelink support. But if you do see any change in
> > behavior, pls report. thanks.
>
> Yeah, looks correct. I just had to go back to patch 1 and check.
> A note "only flags [list] are changed, and they could not be modified
> after creation of the device prior to patch 1" in the cover and/or in
> this patch's commit message would have spared reviewers a bit of a
> scare :)

ack, sounds good. I am also going to reduce the scope of the series a
bit as i am only interested in support for TTL changelink right now.