Marek has published some patches for the debugging infrastructure. Please 
adjust your patch for that.

Andreas Langer wrote:
> +	if (frag_enabled_tmp < 0) {
> +		if (buff[count - 1] == '\n')
> +			buff[count - 1] = '\0';
> +
> +		printk(KERN_ERR "batman-adv:Invalid parameter for 'frag' setting on 
mesh
> %s received: %s\n",
> +		       net_dev->name, buff);

Please change the printk to a bat_err (remove the batman-adv: and the 
information on which mesh it happened).

> +	if (atomic_read(&bat_priv->frag_enabled) == frag_enabled_tmp)
> +		return count;
> +
> +	printk(KERN_INFO "batman-adv:Changing frag from: %s to: %s on mesh:
> %s\n", +	       atomic_read(&bat_priv->frag_enabled) == 1 ?
> +	       "enabled" : "disabled",
> +	       frag_enabled_tmp == 1 ? "enabled" : "disabled",
> +	       net_dev->name);

That printk to a bat_err (remove the batman-adv: and the information on which 
mesh it happened).

>  	atomic_set(&batman_if->seqno, 1);
> +	atomic_set(&batman_if->frag_seqno, 1);
>  	printk(KERN_INFO "batman-adv:Adding interface: %s\n", batman_if->dev);

Please rebase your patch on top of the current trunk. Otherwise we have an 
merge failure here.

> +			if (!orig_node) {
> +				printk(KERN_WARNING
> +					"frag: couldn't find orig node\n");
> +				return NET_RX_DROP;
> +			}

Please change the printk to pr_warning.

Best regards,
	Sven