From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH v3 12/12] net/virtio: add Tso support Date: Thu, 13 Oct 2016 20:50:22 +0200 Message-ID: <1603777.zeWNS1Z9oX@xps13> References: <1476368171-18176-1-git-send-email-olivier.matz@6wind.com> <1476368171-18176-13-git-send-email-olivier.matz@6wind.com> <20161013160551.GB16751@yliu-dev.sh.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: Yuanhan Liu , 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 Return-path: Received: from mail-qk0-f175.google.com (mail-qk0-f175.google.com [209.85.220.175]) by dpdk.org (Postfix) with ESMTP id C4FAB590F for ; Thu, 13 Oct 2016 20:50:24 +0200 (CEST) Received: by mail-qk0-f175.google.com with SMTP id o68so153823372qkf.3 for ; Thu, 13 Oct 2016 11:50:24 -0700 (PDT) In-Reply-To: <20161013160551.GB16751@yliu-dev.sh.intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 2016-10-14 00:05, Yuanhan Liu: > 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. Applied - without TSO checksum on fragmented header - with some release notes changes - with Yuanhan acked/reviewed Thanks