From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <jfreimann@redhat.com>
Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73])
 by dpdk.org (Postfix) with ESMTP id 145D25F33
 for <dev@dpdk.org>; Wed, 21 Mar 2018 09:46:08 +0100 (CET)
Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com
 [10.11.54.3])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mx1.redhat.com (Postfix) with ESMTPS id 997154026788;
 Wed, 21 Mar 2018 08:46:07 +0000 (UTC)
Received: from localhost (dhcp-192-241.str.redhat.com [10.33.192.241])
 by smtp.corp.redhat.com (Postfix) with ESMTPS id C640810EE850;
 Wed, 21 Mar 2018 08:46:00 +0000 (UTC)
Date: Wed, 21 Mar 2018 09:45:59 +0100
From: Jens Freimann <jfreimann@redhat.com>
To: Tiwei Bie <tiwei.bie@intel.com>
Cc: dev@dpdk.org, yliu@fridaylinux.org, maxime.coquelin@redhat.com,
 mst@redhat.com
Message-ID: <20180321084559.7v5rbf6d34ijad53@dhcp-192-241.str.redhat.com>
References: <20180316152120.13199-1-jfreimann@redhat.com>
 <20180316152120.13199-14-jfreimann@redhat.com>
 <20180319110256.yaibpb37fybrohky@debian>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline
In-Reply-To: <20180319110256.yaibpb37fybrohky@debian>
User-Agent: NeoMutt/20180223
X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16
 (mx1.redhat.com [10.11.55.6]); Wed, 21 Mar 2018 08:46:07 +0000 (UTC)
X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]);
 Wed, 21 Mar 2018 08:46:07 +0000 (UTC) for IP:'10.11.54.3'
 DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com'
 HELO:'smtp.corp.redhat.com' FROM:'jfreimann@redhat.com' RCPT:''
Subject: Re: [dpdk-dev] [PATCH 13/17] vhost: packed queue enqueue path
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://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: <https://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Mar 2018 08:46:08 -0000

On Mon, Mar 19, 2018 at 07:02:56PM +0800, Tiwei Bie wrote:
>On Fri, Mar 16, 2018 at 04:21:16PM +0100, Jens Freimann wrote:
>[...]
>> +static inline uint32_t __attribute__((always_inline))
>> +vhost_enqueue_burst_packed(struct virtio_net *dev, uint16_t queue_id,
>> +	      struct rte_mbuf **pkts, uint32_t count)
>> +{
>> +	struct vhost_virtqueue *vq;
>> +	struct vring_desc_packed *descs;
>> +	uint16_t idx;
>> +	uint16_t mask;
>> +	uint16_t i;
>> +
>> +	vq = dev->virtqueue[queue_id];
>> +
>> +	rte_spinlock_lock(&vq->access_lock);
>> +
>> +	if (unlikely(vq->enabled == 0)) {
>> +		i = 0;
>> +		goto out_access_unlock;
>> +	}
>> +
>> +	if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
>> +		vhost_user_iotlb_rd_lock(vq);
>> +
>> +	descs = vq->desc_packed;
>> +	mask = vq->size - 1;
>
>Queue size may not be a power of 2 in packed ring.

yes, you are right. my patches don't support this yet, but I plan to
add it in the next version.

Thanks for the review!

regards,
Jens