tuntap: move XDP flushing out of tun_do_xdp()
This will allow adding batch flushing on top.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 14fe940..3ae5393 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1660,7 +1660,6 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
switch (act) {
case XDP_REDIRECT:
err = xdp_do_redirect(tun->dev, xdp, xdp_prog);
- xdp_do_flush_map();
if (err)
return err;
break;
@@ -1749,6 +1748,8 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun,
err = tun_xdp_act(tun, xdp_prog, &xdp, act);
if (err < 0)
goto err_xdp;
+ if (err == XDP_REDIRECT)
+ xdp_do_flush_map();
if (err != XDP_PASS)
goto out;