netdev - Re: [PATCH net-next v3 04/24] ovpn: add basic interface creation/destruction/management routines

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Date: Wed, 8 May 2024 18:06:29 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Sabrina Dubroca <sd@...asysnail.net>
Cc: Antonio Quartulli <antonio@...nvpn.net>, netdev@...r.kernel.org, Sergey
 Ryazanov <ryazanov.s.a@...il.com>, Paolo Abeni <pabeni@...hat.com>, Eric
 Dumazet <edumazet@...gle.com>, Andrew Lunn <andrew@...n.ch>, Esben
 Haabendal <esben@...nix.com>
Subject: Re: [PATCH net-next v3 04/24] ovpn: add basic interface
 creation/destruction/management routines

On Wed, 8 May 2024 16:52:27 +0200 Sabrina Dubroca wrote:
> > +static int ovpn_net_open(struct net_device *dev)
> > +{
> > +	struct in_device *dev_v4 = __in_dev_get_rtnl(dev);
> > +
> > +	if (dev_v4) {
> > +		/* disable redirects as Linux gets confused by ovpn handling
> > +		 * same-LAN routing
> > +		 */
> > +		IN_DEV_CONF_SET(dev_v4, SEND_REDIRECTS, false);
> > +		IPV4_DEVCONF_ALL(dev_net(dev), SEND_REDIRECTS) = false;  
> 
> Jakub, are you ok with that? This feels a bit weird to have in the
> middle of a driver.

Herm, I only looked at the netlink bits so far.
Would be good to get more details on the problem and see if we can fix
it more directly.