Re: [PATCH] netfilter: nft_compat: fix sparse warning

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On Thu, Feb 12, 2015 at 01:25:57PM +0100, Arturo Borrero Gonzalez wrote:
> On 12 February 2015 at 13:20, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> wrote:
> > On Thu, Feb 12, 2015 at 11:14:09AM +0100, Arturo Borrero Gonzalez wrote:
> >> >> net/netfilter/nft_compat.c:140:37: sparse: incorrect type in assignment (different base types)
> >>    net/netfilter/nft_compat.c:140:37:    expected restricted __be16 [usertype] ethproto
> >>    net/netfilter/nft_compat.c:140:37:    got unsigned char [unsigned] [usertype] proto
> >> >> net/netfilter/nft_compat.c:351:37: sparse: incorrect type in assignment (different base types)
> >>    net/netfilter/nft_compat.c:351:37:    expected restricted __be16 [usertype] ethproto
> >>    net/netfilter/nft_compat.c:351:37:    got unsigned char [unsigned] [usertype] proto
> >
> > This is spotting a more serious problem. The existing code is trimming
> > the ethernet protocol field to u8. We should use u16 all around the
> > code and then force the casting to calm down sparse.
> 
> I see,  I can handle it if you want.

Please, go ahead. Thanks.
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