From: Antonio Quartulli <antonio@meshcoding.com>
To: Sven Eckelmann <sven@narfation.org>
Cc: The list for a Better Approach To Mobile Ad-hoc Networking
<b.a.t.m.a.n@lists.open-mesh.org>
Subject: Re: [B.A.T.M.A.N.] [PATCH v2] batman-adv: Add lower layer header length to headroom
Date: Tue, 4 Aug 2015 22:39:47 +0200 [thread overview]
Message-ID: <55C12313.5040700@meshcoding.com> (raw)
In-Reply-To: <1438720693-30590-1-git-send-email-sven@narfation.org>
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On 04/08/15 22:38, Sven Eckelmann wrote:
> The maximum of hard_header_len and needed_headroom of all slave interfaces
> of a batman-adv device must be used to define the batman-adv device
> headroom/header_len. This is required to avoid too small headroom problems
> when these slave devices try to send the encapsulated packet.
>
> The batman-adv therefore uses:
>
> needed_headroom = max(0, dev[0].needed_headroom, ...,
> dev[n].needed_headroom)
> hard_header_len = max(ETH_HLEN, dev[0].hard_header_len, ...,
> dev[n].hard_header_len) + ETH_HLEN +
> max(sizeof(batadv_*cast_packet))
>
> Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Antonio Quartulli <antonio@meshcoding.com>
--
Antonio Quartulli
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prev parent reply other threads:[~2015-08-04 20:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-04 20:38 [B.A.T.M.A.N.] [PATCH v2] batman-adv: Add lower layer header length to headroom Sven Eckelmann
2015-08-04 20:39 ` Antonio Quartulli [this message]
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