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batman-adv: Include frame priority in fragment header

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Unfragmented frames which traverse a node have their skb->priority set
by looking at the IP ToS byte, or the 802.1p header. However for
fragments this is not possible, only one of the fragments will contain
the headers. Instead, place the priority into the fragment header and
on receiving a fragment, use this information to set the skb->priority
for when the fragment is forwarded.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Andrew Lunn
2016-05-09 20:03:36 +02:00
committed by Simon Wunderlich
parent 1914848e0d
commit c0f25c802b
3 changed files with 16 additions and 2 deletions
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2
net/batman-adv/routing.c
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@@ -1006,6 +1006,8 @@ int batadv_recv_frag_packet(struct sk_buff *skb,
if (!orig_node_src)
goto out;
skb->priority = frag_packet->priority + 256;
/* Route the fragment if it is not for us and too big to be merged. */
if (!batadv_is_my_mac(bat_priv, frag_packet->dest) &&
batadv_frag_skb_fwd(skb, recv_if, orig_node_src)) {