From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Coquelin Subject: [PATCH v2 1/3] net/virtio: fix mbuf data offset for simple Rx function Date: Mon, 12 Feb 2018 16:46:10 +0100 Message-ID: <20180212154612.5297-2-maxime.coquelin@redhat.com> References: <20180212154612.5297-1-maxime.coquelin@redhat.com> Cc: dev@dpdk.org, stable@dpdk.org, zhihong.wang@intel.com, qian.q.xu@intel.com, lei.a.yao@intel.com To: tiwei.bie@intel.com, yliu@fridaylinux.org, ferruh.yigit@intel.com, victork@redhat.com, thomas@monjalon.net, olivier.matz@6wind.com, jianfeng.tan@intel.com Return-path: In-Reply-To: <20180212154612.5297-1-maxime.coquelin@redhat.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Olivier Matz The mbuf->data_off was was not properly set for the first received mbufs. Fix this by setting it in virtqueue_enqueue_recv_refill_simple(), which is used to enqueue the first mbuf in the ring. The function virtio_rxq_rearm_vec(), which is used to rearm the ring with new mbufs, is valid and does not need to be updated. Fixes: cab0461234e7 ("virtio: fill Rx avail ring with blank mbufs") Cc: stable@dpdk.org Signed-off-by: Olivier Matz --- drivers/net/virtio/virtio_rxtx_simple.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/virtio/virtio_rxtx_simple.c b/drivers/net/virtio/virtio_rxtx_simple.c index 7247a0822..b1f610ffa 100644 --- a/drivers/net/virtio/virtio_rxtx_simple.c +++ b/drivers/net/virtio/virtio_rxtx_simple.c @@ -36,6 +36,7 @@ virtqueue_enqueue_recv_refill_simple(struct virtqueue *vq, uint16_t desc_idx; cookie->port = vq->rxq.port_id; + cookie->data_off = RTE_PKTMBUF_HEADROOM; desc_idx = vq->vq_avail_idx & (vq->vq_nentries - 1); dxp = &vq->vq_descx[desc_idx]; -- 2.14.3