From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Subject: Re: [PATCH v3 12/12] net/virtio: add Tso support
Date: Fri, 14 Oct 2016 00:05:51 +0800
Message-ID: <20161013160551.GB16751@yliu-dev.sh.intel.com>
References: <1476368171-18176-1-git-send-email-olivier.matz@6wind.com>
 <1476368171-18176-13-git-send-email-olivier.matz@6wind.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: dev@dpdk.org, konstantin.ananyev@intel.com, sugesh.chandran@intel.com,
 bruce.richardson@intel.com, jianfeng.tan@intel.com,
 helin.zhang@intel.com, adrien.mazarguil@6wind.com,
 stephen@networkplumber.org, dprovan@bivio.net,
 xiao.w.wang@intel.com, maxime.coquelin@redhat.com
To: Olivier Matz <olivier.matz@6wind.com>,
 Thomas Monjalon <thomas.monjalon@6wind.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mga07.intel.com (mga07.intel.com [134.134.136.100])
 by dpdk.org (Postfix) with ESMTP id 8078858EB
 for <dev@dpdk.org>; Thu, 13 Oct 2016 18:04:57 +0200 (CEST)
Content-Disposition: inline
In-Reply-To: <1476368171-18176-13-git-send-email-olivier.matz@6wind.com>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On Thu, Oct 13, 2016 at 04:16:11PM +0200, Olivier Matz wrote:
> +/* When doing TSO, the IP length is not included in the pseudo header
> + * checksum of the packet given to the PMD, but for virtio it is
> + * expected.
> + */
> +static void
> +virtio_tso_fix_cksum(struct rte_mbuf *m)
> +{
> +	/* common case: header is not fragmented */
> +	if (likely(rte_pktmbuf_data_len(m) >= m->l2_len + m->l3_len +
> +			m->l4_len)) {
> +		struct ipv4_hdr *iph;
> +		struct ipv6_hdr *ip6h;
> +		struct tcp_hdr *th;
> +		uint16_t prev_cksum, new_cksum, ip_len, ip_paylen;
> +		uint32_t tmp;
...
> +	} else {

As discussed just now, if you drop the else part, you could add my
ACK for the whole virtio changes, and Review-ed by for all mbuf and
other changes.

Thoams, please pick them by youself directly: since it depends on
other patches and they will be picked (or already be picked?) by you.

Thanks.

	--yliu