netdev - Re: [PATCH v2 bpf-next 14/14] selftests/bpf: convert cls_redirect selftest to use _

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Date:   Wed, 2 Sep 2020 12:58:59 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Andrii Nakryiko <andriin@...com>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH v2 bpf-next 14/14] selftests/bpf: convert cls_redirect
 selftest to use __noinline

On Tue, Sep 1, 2020 at 10:46 PM Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> On Mon, Aug 31, 2020 at 06:50:03PM -0700, Andrii Nakryiko wrote:
> > -static bool ipv4_is_fragment(const struct iphdr *ip)
> > +static __noinline bool ipv4_is_fragment(const struct iphdr *ip)
> >  {
> >       uint16_t frag_off = ip->frag_off & bpf_htons(IP_OFFSET_MASK);
> >       return (ip->frag_off & bpf_htons(IP_MF)) != 0 || frag_off > 0;
> >  }
> >
> > -static struct iphdr *pkt_parse_ipv4(buf_t *pkt, struct iphdr *scratch)
> > +static __always_inline struct iphdr *pkt_parse_ipv4(buf_t *pkt, struct iphdr *scratch)
>
> similar concern. Could you keep old and add new one with macro magic?

Ok.