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batman-adv: network coding - code and transmit packets if possible

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Before adding forward-skbs to the coding buffer, the buffer is searched
for a potential coding opportunity. If one is found, the two packets are
network coded and transmitted right away. If not, the forward-skb is
added to the buffer.

Network coded packets are transmitted with information about the two
receivers and the two coded packets. The first receiver is given by the
MAC header, while the second is given in the payload/bat-header. The
second receiver uses promiscuous mode to receive the packet and check
the second destination.

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
This commit is contained in:
Martin Hundebøll
2013-01-25 11:12:41 +01:00
committed by Antonio Quartulli
parent 953324776d
commit 3c12de9a5c
5 changed files with 466 additions and 0 deletions
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6
net/batman-adv/soft-interface.c
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@@ -665,6 +665,12 @@ static const struct {
{ "dat_put_rx" },
{ "dat_cached_reply_tx" },
#endif
#ifdef CONFIG_BATMAN_ADV_NC
{ "nc_code" },
{ "nc_code_bytes" },
{ "nc_recode" },
{ "nc_recode_bytes" },
#endif
};
static void batadv_get_strings(struct net_device *dev, uint32_t stringset,