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From: Marek Lindner <lindner_marek@yahoo.de>
Date: Tue, 17 Apr 2012 12:35:05 +0200
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Subject: Re: [B.A.T.M.A.N.] [PATCH 2/3] batman-adv: introduce a boolean
	switch to enable/disable DAT
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To: The list for a Better Approach To Mobile Ad-hoc Networking <b.a.t.m.a.n@lists.open-mesh.org>

On Tuesday, April 17, 2012 12:24:53 Antonio Quartulli wrote:
> +static void arp_change_timeout(struct net_device *soft_iface, bool
> enable_dat) +{
> +       struct in_device *in_dev = in_dev_get(soft_iface);
> +       if (!in_dev) {
> +               pr_err("Unable to set ARP parameters for the batman
> interface '%s'\n", +                      soft_iface->name);
> +               return;
> +       }
> +
> +       if (enable_dat) {
> +               /* Introduce a delay in the ARP state-machine transactions.
> +                * Entries will be kept in the ARP table for the default
> time +                * multiplied by 4
> +                */
> +               in_dev->arp_parms->base_reachable_time *=
> ARP_TIMEOUT_FACTOR; +               in_dev->arp_parms->gc_staletime *=
> ARP_TIMEOUT_FACTOR; +               in_dev->arp_parms->reachable_time *=
> ARP_TIMEOUT_FACTOR; +       } else {
> +               in_dev->arp_parms->base_reachable_time /=
> ARP_TIMEOUT_FACTOR; +               in_dev->arp_parms->gc_staletime /=
> ARP_TIMEOUT_FACTOR; +               in_dev->arp_parms->reachable_time /=
> ARP_TIMEOUT_FACTOR; +       }
> +
> +       in_dev_put(in_dev);
> +}

One more thing: Are we never going to release the in_dev ?

Regards,
Marek