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Commit 291aeb2b authored by Jason Wang's avatar Jason Wang Committed by David S. Miller
Browse files

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: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f23aff8

drivers/net/tun.c

+3 −7
Original line number Diff line number Diff line
@@ -1726,22 +1726,18 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, 
			goto err_xdp;

		}

	}



	skb = build_skb(buf, buflen);

	if (!skb) {

	rcu_read_unlock();

	local_bh_enable();



	skb = build_skb(buf, buflen);

	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: