Re: [B.A.T.M.A.N.] [PATCH next] batman-adv: consider network coding overhead when calculating required mtu

["Martin Hundebøll" <martin@hundeboll.net>]

On 2013-05-08 07:36, Marek Lindner wrote:
> The module prints a warning when the MTU on the hard interface is too
> small to transfer payload traffic without fragmentation. The required
> MTU is calculated based on the encapsulation header size. If network
> coding is compild into the module its header size is taken into
> account as well.
>
> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

Acked-by: Martin Hundebøll <martin@hundeboll.net>

> ---
>   types.h |    7 +++++++
>   1 file changed, 7 insertions(+)
>
> diff --git a/types.h b/types.h
> index b2c94e1..8089bd6 100644
> --- a/types.h
> +++ b/types.h
> @@ -27,9 +27,16 @@
>   /**
>    * Maximum overhead for the encapsulation for a payload packet
>    */
> +#ifdef CONFIG_BATMAN_ADV_NC
> +#define BATADV_HEADER_LEN \
> +	(ETH_HLEN + max3(sizeof(struct batadv_unicast_packet), \
> +			 sizeof(struct batadv_bcast_packet),   \
> +			 sizeof(struct batadv_coded_packet)))
> +#else
>   #define BATADV_HEADER_LEN \
>   	(ETH_HLEN + max(sizeof(struct batadv_unicast_packet), \
>   			sizeof(struct batadv_bcast_packet)))
> +#endif /* CONFIG_BATMAN_ADV_NC */
>
>   #ifdef CONFIG_BATMAN_ADV_DAT
>
>


-- 
Kind Regards
Martin Hundebøll
Frederiks Allé 99, 1.th
8000 Aarhus C
Denmark

+45 61 65 54 61
martin@hundeboll.net