bumping for review
On Mon, Jul 31, 2017 at 11:39 AM, Nick Desaulniers
<ndesaulniers@xxxxxxxxxx> wrote:
> Clang produces the following warning:
>
> net/ipv4/netfilter/nf_nat_h323.c:553:6: error:
> logical not is only applied to the left hand side of this comparison
> [-Werror,-Wlogical-not-parentheses]
> if (!set_h225_addr(skb, protoff, data, dataoff, taddr,
> ^
> add parentheses after the '!' to evaluate the comparison first
> add parentheses around left hand side expression to silence this warning
>
> There's not necessarily a bug here, but it's cleaner to use the form:
>
> if (x != 0)
>
> rather than:
>
> if (!x == 0)
>
> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> ---
> Also, it's even cleaner to use the form:
>
> if (x)
>
> but then if the return codes change from treating 0 as success (unlikely),
> then all call sites must be updated.
>
> I'm happy to send v2 that changes to that form, and updates the other call
> sites to be:
>
> if (set_h225_addr())
> handle_failures()
> else
> handle_success()
>
> net/ipv4/netfilter/nf_nat_h323.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c
> index 574f7ebba0b6..d8fb251fa6e3 100644
> --- a/net/ipv4/netfilter/nf_nat_h323.c
> +++ b/net/ipv4/netfilter/nf_nat_h323.c
> @@ -550,9 +550,9 @@ static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
> }
>
> /* Modify signal */
> - if (!set_h225_addr(skb, protoff, data, dataoff, taddr,
> - &ct->tuplehash[!dir].tuple.dst.u3,
> - htons(nated_port)) == 0) {
> + if (set_h225_addr(skb, protoff, data, dataoff, taddr,
> + &ct->tuplehash[!dir].tuple.dst.u3,
> + htons(nated_port)) != 0) {
> nf_ct_unexpect_related(exp);
> return -1;
> }
> --
> 2.14.0.rc0.400.g1c36432dff-goog
>
--
Thanks,
~Nick Desaulniers
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