On Wed 11-01-06 00:00:20, David S. Miller wrote:
> From: Ulrich Drepper <[email protected]>
> Date: Tue, 10 Jan 2006 14:02:52 -0800
>
> > I just saw this in a patch:
> >
> > + if (ntohs(ih->frag_off) & IP_OFFSET)
> > + return EBT_NOMATCH;
> >
> > This isn't optimal, it requires a byte switch little endian machines.
> > The compiler isn't smart enough. It would be better to use
> >
> > if (ih->frag_off & ntohs(IP_OFFSET))
> >
> > where the byte-swap can be done at compile time. This is kind of ugly,
> > I guess, so maybe a dedicate macro
> >
> > net_host_bit_p(ih->frag_off, IP_OFFSET)
>
> The first suggestion isn't considered ugly, and the best form is:
>
> if (ih->frag_off & __constant_htons(IP_OFFSET))
>
> I'll fix that up when I get a chance, thanks for catching it Uli.
Could you possibly
#define IP_OFFSET htons(1234)
?
Noone should need it in native endianity, no?
--
Thanks, Sharp!
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