Thread (4 messages) 4 messages, 2 authors, 2016-11-08

Re: [PATCH 13/17] batman-adv: Consume skb in receive handlers

From: Eric Dumazet <hidden>
Date: 2016-11-08 17:43:01
Also in: batman

On Tue, 2016-11-08 at 18:28 +0100, Sven Eckelmann wrote:
On Dienstag, 8. November 2016 08:59:49 CET Eric Dumazet wrote:
[...]
quoted
quoted
+free_skb:
 	consume_skb(skb);
-	return NET_RX_SUCCESS;
+
+	return ret;
 }

Okay, but we do have kfree_skb() and consume_skb() and they should be
used appropriately.
Yes, this patch is one part of reaching this goal. Some other parts are also
in this patchset. But other changes like the one you've mention here (change
some consume_skb partially back to kfree_skb) have still to be done. But
first we have to clean up the main portion of the mess :)
Sure, but your patch 13/17 should address this right away.

You must not call consume_skb() if you are dropping a packet.

Prior to this patch, kfree_skb() was properly called, and after this
patch, consume_skb() is called instead.


-       ret = (*batadv_rx_handler[idx])(skb, hard_iface);
-
-       if (ret == NET_RX_DROP)
-               kfree_skb(skb);
+       (*batadv_rx_handler[idx])(skb, hard_iface);
 
You can not claim working on these issues and at the same time add them
back.
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