From: "K. Y. Srinivasan" <k...@microsoft.com>
Date: Mon, 27 Apr 2015 18:14:50 -0700
> Commit commit b08cc79155fc26d0d112b1470d1ece5034651a4b eliminated memory
> allocation in the packet send path. This commit introduced a bug since it
> did not account for the case if the skb was cloned. Fix this bug by
> using the pre-reserved head room only if the skb is not cloned.
>
> Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
We have generic infrastructure to do this, please try instead:
err = skb_cow_head(skb, pkt_sz);
this will take care of everything for you and you can get rid
of all of this dynamic memory allocation etc. in this code
path.
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