tun: add missing rx stats accounting in tun_xdp_act

The TUN can be used as vhost-net backend, and it is necessary to
count the packets transmitted from TUN to vhost-net/virtio-net.
However, there are some places in the receive path that were not
taken into account when using XDP. It would be beneficial to also
include new accounting for successfully received bytes using
dev_sw_netstats_rx_add.

Fixes: 761876c857cb ("tap: XDP support")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-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 237fef557ba5882c8555a4e388edecb9c90aef6b..4a4f8c8e79fa12dc84a8c83cefbf964dd40e1aa2 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1634,6 +1634,7 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
                        dev_core_stats_rx_dropped_inc(tun->dev);
                        return err;
                }
+               dev_sw_netstats_rx_add(tun->dev, xdp->data_end - xdp->data);
                break;
        case XDP_TX:
                err = tun_xdp_tx(tun->dev, xdp);
@@ -1641,6 +1642,7 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
                        dev_core_stats_rx_dropped_inc(tun->dev);
                        return err;
                }
+               dev_sw_netstats_rx_add(tun->dev, xdp->data_end - xdp->data);
                break;
        case XDP_PASS:
                break;