Re: [PATCH] netfilter: turn NF_HOOK into an inline function

From: Arnd Bergmann
Date: Fri Oct 09 2015 - 09:16:34 EST


On Friday 09 October 2015 21:03:57 kbuild test robot wrote:
> ^1da177e Linus Torvalds 2005-04-16 818 cb->rt_flags &= ~DN_RT_F_IE;
> ^1da177e Linus Torvalds 2005-04-16 819 if (rt->rt_flags & RTCF_DOREDIRECT)
> ^1da177e Linus Torvalds 2005-04-16 820 cb->rt_flags |= DN_RT_F_IE;
> ^1da177e Linus Torvalds 2005-04-16 821
> 29a26a56 Eric W. Biederman 2015-09-15 822 return NF_HOOK(NFPROTO_DECNET, NF_DN_FORWARD,
> 29a26a56 Eric W. Biederman 2015-09-15 @823 &init_net, NULL, skb, dev, skb->dev,
> 8f40b161 David S. Miller 2011-07-17 824 dn_to_neigh_output);
> ^1da177e Linus Torvalds 2005-04-16 825
> ^1da177e Linus Torvalds 2005-04-16 826 drop:
>

Ah, right. The 'dev' variable here is declared as

#ifdef CONFIG_NETFILTER
struct net_device *dev = skb->dev;
#endif

Apparently because the code produced the same warning as the ipv6 code.

Removing the #ifdef here would make that code nicer and let us use
my patch. Alternatively we could put the same #ifdef into IPV6 and
not use the inline function.

Any opinions?

Arnd
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