tuntap: enable bh early during processing XDP
This patch move the bh enabling a little bit earlier, this will be
used for factoring out the core XDP logic of tuntap.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
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 d3677a5..372caf7 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1726,22 +1726,18 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun,
goto err_xdp;
}
}
+ rcu_read_unlock();
+ local_bh_enable();
skb = build_skb(buf, buflen);
- if (!skb) {
- rcu_read_unlock();
- local_bh_enable();
+ if (!skb)
return ERR_PTR(-ENOMEM);
- }
skb_reserve(skb, pad - delta);
skb_put(skb, len);
get_page(alloc_frag->page);
alloc_frag->offset += buflen;
- rcu_read_unlock();
- local_bh_enable();
-
return skb;
err_redirect: