netdev - Re: [PATCH bpf] xsk: fix return value of xdp_umem_assign

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Message-ID: <CAPhsuW74mgPhzoASEO52aFF3Z=kg-LCQpozPk_4MxftE=LnsHA@mail.gmail.com>
Date:   Sun, 19 Aug 2018 22:11:18 -0700
From:   Song Liu <liu.song.a23@...il.com>
To:     Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Björn Töpel <bjorn.topel@...el.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf] xsk: fix return value of xdp_umem_assign_dev()

On Sun, Aug 19, 2018 at 5:54 PM, Prashant Bhole
<bhole_prashant_q7@....ntt.co.jp> wrote:
> s/ENOTSUPP/EOPNOTSUPP/ in function umem_assign_dev().
> This function's return value is directly returned by xsk_bind().
> EOPNOTSUPP is bind()'s possible return value.
>
> Fixes: f734607e819b ("xsk: refactor xdp_umem_assign_dev()")
> Signed-off-by: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>

Acked-by: Song Liu <songliubraving@...com>


> ---
>  net/xdp/xdp_umem.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c
> index 911ca6d3cb5a..bfe2dbea480b 100644
> --- a/net/xdp/xdp_umem.c
> +++ b/net/xdp/xdp_umem.c
> @@ -74,14 +74,14 @@ int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev,
>                 return 0;
>
>         if (!dev->netdev_ops->ndo_bpf || !dev->netdev_ops->ndo_xsk_async_xmit)
> -               return force_zc ? -ENOTSUPP : 0; /* fail or fallback */
> +               return force_zc ? -EOPNOTSUPP : 0; /* fail or fallback */
>
>         bpf.command = XDP_QUERY_XSK_UMEM;
>
>         rtnl_lock();
>         err = xdp_umem_query(dev, queue_id);
>         if (err) {
> -               err = err < 0 ? -ENOTSUPP : -EBUSY;
> +               err = err < 0 ? -EOPNOTSUPP : -EBUSY;
>                 goto err_rtnl_unlock;
>         }
>
> --
> 2.17.1
>
>