netdev - Re: [PATCH net-next 14/22] vxlan: Flow based tunneling

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Date:	Mon, 20 Jul 2015 14:15:22 -0300
From:	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:	Thomas Graf <tgraf@...g.ch>
Cc:	roopa@...ulusnetworks.com, rshearma@...cade.com,
	ebiederm@...ssion.com, hannes@...essinduktion.org,
	pshelar@...ira.com, jesse@...ira.com, davem@...emloft.net,
	daniel@...earbox.net, tom@...bertland.com, edumazet@...gle.com,
	jiri@...nulli.us, stephen@...workplumber.org, jpettit@...ira.com,
	kaber@...sh.net, simon.horman@...ronome.com,
	joestringer@...ira.com, ja@....bg, ast@...mgrid.com,
	weichunc@...mgrid.com, netdev@...r.kernel.org, dev@...nvswitch.org
Subject: Re: [PATCH net-next 14/22] vxlan: Flow based tunneling

On Fri, Jul 17, 2015 at 02:55:33PM +0200, Thomas Graf wrote:

[ snip ]

> @@ -2373,6 +2470,12 @@ static void vxlan_setup(struct net_device *dev)
>  	netif_keep_dst(dev);                     ---> (a)
>  	dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
>  
> +	/* If in flow based mode, keep the dst including encapsulation
> +	 * instructions for vxlan_xmit().
> +	 */
> +	if (vxlan->flags & VXLAN_F_FLOW_BASED)
> +		netif_keep_dst(dev);             ---> (b)
> +
>  	INIT_LIST_HEAD(&vxlan->next);
>  	spin_lock_init(&vxlan->hash_lock);
>  

Sounds like after 0287587884b1 ("net: better IFF_XMIT_DST_RELEASE
support"), which introduced (a) above, (b) is not needed?

  Marcelo

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