On Fri, 2016-10-07 at 16:14 +0200, Abdelrhman Ahmed wrote:
> When hardware header is added without using cached one, neigh_resolve_output
> and neigh_connected_output reset skb to network header before adding it.
> When cached one is used, neigh_hh_output does not reset the skb to network
> header.
>
> The fix is to reset skb to network header before adding cached hardware header
> to keep the behavior consistent in all cases.
What is the issue you want to fix exactly ?
Please describe the use case.
I highly suggest you take a look at commit
e1f165032c8bade3a6bdf546f8faf61fda4dd01c
("net: Fix skb_under_panic oops in neigh_resolve_output")
Otherwise, your fix is in fact adding a critical bug.
