From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 77B995A69 for ; Mon, 2 Mar 2015 19:52:09 +0100 (CET) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 02 Mar 2015 10:52:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,676,1418112000"; d="scan'208";a="685719808" Received: from irsmsx107.ger.corp.intel.com ([163.33.3.99]) by fmsmga002.fm.intel.com with ESMTP; 02 Mar 2015 10:52:07 -0800 Received: from irsmsx155.ger.corp.intel.com (163.33.192.3) by IRSMSX107.ger.corp.intel.com (163.33.3.99) with Microsoft SMTP Server (TLS) id 14.3.195.1; Mon, 2 Mar 2015 18:52:06 +0000 Received: from irsmsx109.ger.corp.intel.com ([169.254.13.103]) by irsmsx155.ger.corp.intel.com ([169.254.14.159]) with mapi id 14.03.0195.001; Mon, 2 Mar 2015 18:52:05 +0000 From: "Butler, Siobhan A" To: "Ouyang, Changchun" , "dev@dpdk.org" Thread-Topic: [dpdk-dev] [PATCH v2] doc: Update prog guide for virtio Thread-Index: AQHQVMStgBudpmrPvkqlNJIy1fFbcZ0JikWg Date: Mon, 2 Mar 2015 18:52:05 +0000 Message-ID: <0C5AFCA4B3408848ADF2A3073F7D8CC86D51A9E5@IRSMSX109.ger.corp.intel.com> References: <1425285647-14975-1-git-send-email-changchun.ouyang@intel.com> In-Reply-To: <1425285647-14975-1-git-send-email-changchun.ouyang@intel.com> Accept-Language: en-IE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [163.33.239.181] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH v2] doc: Update prog guide for virtio X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Mar 2015 18:52:10 -0000 > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Ouyang Changchun > Sent: Monday, March 2, 2015 8:41 AM > To: dev@dpdk.org > Subject: [dpdk-dev] [PATCH v2] doc: Update prog guide for virtio >=20 > This patch add contents for major change in single virtio implementation,= also > add back something for merge-able feature and promiscuous mode in virtio. >=20 > Signed-off-by: Changchun Ouyang > --- >=20 > Changes in v2 > -- A few words adjusted. >=20 > .../prog_guide/poll_mode_drv_emulated_virtio_nic.rst | 17 > +++++++++++++---- > 1 file changed, 13 insertions(+), 4 deletions(-) >=20 > diff --git a/doc/guides/prog_guide/poll_mode_drv_emulated_virtio_nic.rst > b/doc/guides/prog_guide/poll_mode_drv_emulated_virtio_nic.rst > index b0a6250..aae32b6 100644 > --- a/doc/guides/prog_guide/poll_mode_drv_emulated_virtio_nic.rst > +++ b/doc/guides/prog_guide/poll_mode_drv_emulated_virtio_nic.rst > @@ -68,20 +68,29 @@ Features and Limitations of virtio PMD >=20 > In this release, the virtio PMD driver provides the basic functionality = of > packet reception and transmission. >=20 > -* This release does not support mergeable buffers per packet for > performance reasons. > - The packet size supported is from 64 to 1518. > - rte_mbuf should be big enough to hold the whole packet. > +* It supports merge-able buffers per packet when receiving packets and > scattered buffer per packet > + when transmitting packets. The packet size supported is from 64 to 1= 518. > + > +* It supports multicast packets and promiscuous mode. >=20 > * The descriptor number for the RX/TX queue is hard-coded to be 256 by > qemu. > If given a different descriptor number by the upper application, > the virtio PMD generates a warning and fall back to the hard-coded v= alue. >=20 > -* Features such as mac/vlan filter are not supported. > +* Features of mac/vlan filter are supported, negotiation with > vhost/backend are needed to support them. > + When backend can't support vlan filter, virtio app on guest should d= isable > vlan filter to make sure > + the virtio port is configured correctly. E.g. specify '--disable-hw-= vlan' in > testpmd command line. >=20 > * RTE_PKTMBUF_HEADROOM should be defined larger than sizeof(struct > virtio_net_hdr), which is 10 bytes. >=20 > * Virtio does not support runtime configuration. >=20 > +* Virtio supports Link State interrupt. > + > +* Virtio supports software vlan stripping and inserting. > + > +* Virtio supports using port IO to get PCI resource when uio/igb_uio > module is not available. > + > Prerequisites > ------------- >=20 > -- > 1.8.4.2 Acked-by: Siobhan Butler