From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f181.google.com (mail-we0-f181.google.com [74.125.82.181]) by dpdk.org (Postfix) with ESMTP id 14CF3B392 for ; Mon, 25 Aug 2014 17:09:07 +0200 (CEST) Received: by mail-we0-f181.google.com with SMTP id k48so13489834wev.12 for ; Mon, 25 Aug 2014 08:13:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:organization :user-agent:in-reply-to:references:mime-version :content-transfer-encoding:content-type; bh=LEJC9eNBxIPl0zkJo1W3zrnA6Y9PNyy/X6oAyF+KXl8=; b=dF6fV8El1VQkeWnVgZj3pCwzulGpPqAASaSP9RRUkhMF0FBMoXddCVSSc+wDn/zQra fipwbzqMOBcqsl8gOsmWicSx3UjEcL7zhlPa9ch+htEPBRe6qfAuYR9e2flz0wHJokK2 H1c4naUkBKawCgahkZyWoeH6/RpGPimCFHXp3ZKEt7flb6+HRc7ZwEif6duFQa5v8QPe nnjczH/fpxB3Kf+Pdciiu4MYSm7iprbecRctFQ2v2o1ACDH6lifK+Dh8QxhNGwQnbFFI yimAuyeSt+1YCzJcP8ESoPBUdU3UDc6iyDP2zMTGzG8ZtDvOa3XvsW8bjM973c1SynP9 F9kA== X-Gm-Message-State: ALoCoQkxTZz5eTIQEWO7FuooX8QawViSOIaLQAipGAs1z+ffQs8jDyfPpI+uODqHajgXPe50wgTO X-Received: by 10.180.91.70 with SMTP id cc6mr10461282wib.66.1408979582547; Mon, 25 Aug 2014 08:13:02 -0700 (PDT) Received: from xps13.localnet (136-92-190-109.dsl.ovh.fr. [109.190.92.136]) by mx.google.com with ESMTPSA id ew1sm293397wjb.31.2014.08.25.08.13.00 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 25 Aug 2014 08:13:01 -0700 (PDT) From: Thomas Monjalon To: Ouyang Changchun Date: Mon, 25 Aug 2014 17:12:56 +0200 Message-ID: <1413803.G9T3vqDWNZ@xps13> Organization: 6WIND User-Agent: KMail/4.13.3 (Linux/3.15.8-1-ARCH; KDE/4.13.3; x86_64; ; ) In-Reply-To: <1408078681-3511-1-git-send-email-changchun.ouyang@intel.com> References: <1408078681-3511-1-git-send-email-changchun.ouyang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Cc: dev@dpdk.org Subject: Re: [dpdk-dev] [PATCH] examples/vhost: Support jumbo frame in user space vhost 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, 25 Aug 2014 15:09:07 -0000 > This patch support mergeable RX feature and thus support jumbo frame RX and TX > in user space vhost(as virtio backend). > > On RX, it secures enough room from vring to accommodate one complete scattered > packet which is received by PMD from physical port, and then copy data from > mbuf to vring buffer, possibly across a few vring entries and descriptors. > > On TX, it gets a jumbo frame, possibly described by a few vring descriptors which > are chained together with the flags of 'NEXT', and then copy them into one scattered > packet and TX it to physical port through PMD. > > Signed-off-by: Changchun Ouyang > Acked-by: Huawei Xie Applied for version 1.7.1. Thanks -- Thomas