On Thu, Sep 06, 2018 at 12:05:22PM +0800, Jason Wang wrote:
> This will allow adding batch flushing on top.
>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
> ---
> drivers/net/tun.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index 21b125020b3b..ff1cbf3ebd50 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -1646,7 +1646,6 @@ static u32 tun_do_xdp(struct tun_struct *tun,
> switch (act) {
> case XDP_REDIRECT:
> *err = xdp_do_redirect(tun->dev, xdp, xdp_prog);
> - xdp_do_flush_map();
> if (*err)
> break;
> goto out;
> @@ -1735,6 +1734,9 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun,
> act = tun_do_xdp(tun, tfile, xdp_prog, &xdp, &err);
> if (err)
> goto err_xdp;
> +
> + if (act == XDP_REDIRECT)
> + xdp_do_flush_map();
> if (act != XDP_PASS)
> goto out;
At this point the switch statement which used to contain all XDP things
seems to be gone completely. Just rewrite with a bunch of if statements
and all xdp handling spread out to where it makes sense?
> --
> 2.17.1
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