From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34864) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcBjf-00040g-6j for qemu-devel@nongnu.org; Wed, 16 Sep 2015 08:22:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZcBjc-0001pu-1j for qemu-devel@nongnu.org; Wed, 16 Sep 2015 08:22:51 -0400 Received: from mga11.intel.com ([192.55.52.93]:12156) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcBjb-0001po-PI for qemu-devel@nongnu.org; Wed, 16 Sep 2015 08:22:47 -0400 Date: Wed, 16 Sep 2015 20:23:49 +0800 From: Yuanhan Liu Message-ID: <20150916122349.GI2339@yliu-dev.sh.intel.com> References: <1442301035-7550-1-git-send-email-yuanhan.liu@linux.intel.com> <55F954DA.3090006@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <55F954DA.3090006@gmail.com> Subject: Re: [Qemu-devel] [PATCH 0/7 v9] vhost-user multiple queue support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: marcel@redhat.com Cc: jasowang@redhat.com, mst@redhat.com, qemu-devel@nongnu.org, changchun.ouyang@intel.com On Wed, Sep 16, 2015 at 02:39:06PM +0300, Marcel Apfelbaum wrote: > On 09/15/2015 10:10 AM, Yuanhan Liu wrote: > >Hi, > > > >Here is the updated patch set for enabling vhost-user multiple queue. > > Hi, > > I think this series will not work with the current DPDK vhost-user MQ patches, Yes. The new patch set since v7 has made interface changes. Hence it will not work the v4 DPDK vhost-user MQ patches. > can you please post an RFC on the dpdk list? I guess you could see that soon, before the end of this week. --yliu > If you don't have anything reedy yet, a pointer to a git would also be appreciated. > > Thanks, > Marcel > > > > >This patch set introduces 2 more vhost user messages: VHOST_USER_GET_QUEUE_NUM, > >for querying how many queues the backend supports, and VHOST_USER_SET_VRING_ENABLE, > >for enabling/disabling a specific virt queue. > > > >Both of the two new messages are treated as vhost protocol extension, > >and that's why Michaels's patch "vhost-user: add protocol feature > >negotiation" is also included here. > > > >Patch 1-5 are all prepare works for actually enabling multiple queue. > > > >Patch 6 is the major patch for enabling multiple queue, which also tries > >to address two major concerns from Michael: no feedback from backend if > >it can't support # of requested queues, and all messages are sent N time. > >It also fixes a hidden bug. > > > >Patch 7 introduces the VHOST_USER_SET_VRING_ENABLE message, to enable > >or disable a specific vring. > > > >Note that I haven't done any formal test yet, it just passes build > >test and basic functional test, such as it does exit when backend > >doesn't support # of requested queues. Here I sent it out just for > >more comments, and for avoiding spending too much effort on the wrong > >track. > > > > > >v9: - Per suggested by Jason Wang, patch 5 introduces a new vhost > > backend method: vhost_backend_get_vq_index(). > > > > - Use qemu_find_net_clients_except() at net/vhost-user.c for > > gathering all related ncs so that we could register chr dev > > event handler once. Which is also suggested by Jason Wang. > > > > > >Thanks. > > > > --yliu > > > >--- > >Changchun Ouyang (2): > > vhost-user: add multiple queue support > > vhost-user: add a new message to disable/enable a specific virt queue. > > > >Michael S. Tsirkin (1): > > vhost-user: add protocol feature negotiation > > > >Yuanhan Liu (4): > > vhost-user: use VHOST_USER_XXX macro for switch statement > > vhost: rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE > > vhost-user: add VHOST_USER_GET_QUEUE_NUM message > > vhost: introduce vhost_backend_get_vq_index method > > > > docs/specs/vhost-user.txt | 75 +++++++++++++++++++- > > hw/net/vhost_net.c | 39 ++++++++-- > > hw/net/virtio-net.c | 8 +++ > > hw/virtio/vhost-backend.c | 10 ++- > > hw/virtio/vhost-user.c | 143 +++++++++++++++++++++++++++++++------ > > hw/virtio/vhost.c | 20 +++--- > > include/hw/virtio/vhost-backend.h | 4 ++ > > include/hw/virtio/vhost.h | 2 + > > include/net/vhost_net.h | 3 + > > linux-headers/linux/vhost.h | 2 +- > > net/vhost-user.c | 146 +++++++++++++++++++++++++++----------- > > qapi-schema.json | 6 +- > > qemu-options.hx | 5 +- > > tests/vhost-user-test.c | 2 +- > > 14 files changed, 380 insertions(+), 85 deletions(-) > >