On Fri, 2016-09-16 at 21:47 +0200, Jesper Dangaard Brouer wrote:
> The XDP_TX action can fail transmitting the frame in case the TX ring
> is full or port is down. In case of TX failure it should drop the
> frame, and not as now call 'break' which is the same as XDP_PASS.
>
> Fixes: 9ecc2d86171a ("net/mlx4_en: add xdp forwarding and data write support")
> Signed-off-by: Jesper Dangaard Brouer <bro...@redhat.com>
>
> ---
> Note, this fix have nothing to do with the page-refcnt bug I just reported.
Yeah, the e1000 driver proposal patch had the same issue.
>
> drivers/net/ethernet/mellanox/mlx4/en_rx.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> index 2040dad8611d..d414c67dfd12 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> @@ -906,6 +906,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct
> mlx4_en_cq *cq, int bud
> length, tx_index,
> &doorbell_pending))
> goto consumed;
> + goto next;
> break;
Why keeping this break; then ? ;)
> default:
> bpf_warn_invalid_xdp_action(act);
>
