From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesper Dangaard Brouer Subject: [bpf-next V2 PATCH 5/8] virtio_net: implement flush flag for ndo_xdp_xmit Date: Thu, 31 May 2018 11:00:08 +0200 Message-ID: <152775720805.24817.1149926292475954272.stgit@firesoul> References: <152775714013.24817.5067576840614810786.stgit@firesoul> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: liu.song.a23@gmail.com, songliubraving@fb.com, John Fastabend To: netdev@vger.kernel.org, Daniel Borkmann , Alexei Starovoitov , Jesper Dangaard Brouer Return-path: Received: from mx3-rdu2.redhat.com ([66.187.233.73]:50978 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754144AbeEaJAL (ORCPT ); Thu, 31 May 2018 05:00:11 -0400 In-Reply-To: <152775714013.24817.5067576840614810786.stgit@firesoul> Sender: netdev-owner@vger.kernel.org List-ID: When passed the XDP_XMIT_FLUSH flag virtnet_xdp_xmit now performs the same virtqueue_kick as virtnet_xdp_flush. Signed-off-by: Jesper Dangaard Brouer --- drivers/net/virtio_net.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 4ed823625953..62ba8aadd8e6 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -481,7 +481,7 @@ static int virtnet_xdp_xmit(struct net_device *dev, int err; int i; - if (unlikely(flags & ~XDP_XMIT_FLAGS_NONE)) + if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id(); @@ -507,6 +507,10 @@ static int virtnet_xdp_xmit(struct net_device *dev, drops++; } } + + if (flags & XDP_XMIT_FLUSH) + virtqueue_kick(sq->vq); + return n - drops; }