On 10/10/2019 23:30, Florian Westphal wrote:
> NF_HOOK_LIST now only works for ipv4 and ipv6, as those are the only
> callers.
...
> +
> + rcu_read_lock();
> + switch (pf) {
> + case NFPROTO_IPV4:
> + hook_head = rcu_dereference(net->nf.hooks_ipv4[hook]);
> + break;
> + case NFPROTO_IPV6:
> + hook_head = rcu_dereference(net->nf.hooks_ipv6[hook]);
> + break;
> + default:
> + WARN_ON_ONCE(1);
> + break;
> }
Would it not make sense instead to abstract out the switch in nf_hook()
into, say, an inline function that could be called from here? That
would satisfy SPOT and also save updating this code if new callers of
NF_HOOK_LIST are added in the future.
(Sorry I didn't spot this the first time around; I don't know the NF
code all that well.)
-Ed
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