From: Ouyang Changchun <changchun.ouyang@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [RFC PATCH 0/6] Support multiple queues in vhost
Date: Thu, 7 May 2015 21:00:39 +0800 [thread overview]
Message-ID: <1431003645-27889-1-git-send-email-changchun.ouyang@intel.com> (raw)
This RFC patch set supports the multiple queues for each virtio device in vhost.
The vhost-user is used to enable the multiple queues feature, It's not ready for vhost-cuse.
One prerequisite to enable this feature is that a QEMU patch plus a fix is required to apply
on QEMU, pls refer to this link for the details of the patch and the fix:
http://lists.nongnu.org/archive/html/qemu-devel/2015-04/msg00917.html
Basicaly vhost sample leverages the VMDq+RSS in HW to receive packets and distribute them
into different queue in the pool according to their 5 tuples.
On the other hand, it enables multiple queues mode in vhost/virtio layer by setting the queue
number as the value larger than 1.
HW queue numbers in pool is required to be exactly same with the queue number in each virtio
device, e.g. rxq = 4, the queue number is 4, it means there are 4 HW queues in each VMDq pool,
and 4 queues in each virtio device/port, every queue in pool maps to one qeueu in virtio device.
=========================================
==================| |==================|
vport0 | | vport1 |
--- --- --- ---| |--- --- --- ---|
q0 | q1 | q2 | q3 | |q0 | q1 | q2 | q3 |
/\= =/\= =/\= =/\=| |/\= =/\= =/\= =/\=|
|| || || || || || || ||
|| || || || || || || ||
||= =||= =||= =||=| =||== ||== ||== ||=|
q0 | q1 | q2 | q3 | |q0 | q1 | q2 | q3 |
------------------| |------------------|
VMDq pool0 | | VMDq pool1 |
==================| |==================|
In RX side, it firstly polls each queue of the pool and gets the packets from
it and enqueue them into its corresponding queue in virtio device/port.
In TX side, it dequeue packets from each queue of virtio device/port and send
to either physical port or another virtio device according to its destination
MAC address.
It includes a workaround here in virtio as control queue not work for vhost-user
multiple queues. It needs further investigate to root the cause.
Changchun Ouyang (6):
ixgbe: Support VMDq RSS in non-SRIOV environment
lib_vhost: Support multiple queues in virtio dev
lib_vhost: Set memory layout for multiple queues mode
vhost: Add new command line option: rxq
vhost: Support multiple queues
virtio: Resolve for control queue
examples/vhost/main.c | 199 +++++++++++++++++---------
lib/librte_ether/rte_ethdev.c | 40 ++++++
lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 82 +++++++++--
lib/librte_pmd_virtio/virtio_ethdev.c | 6 +
lib/librte_vhost/rte_virtio_net.h | 25 +++-
lib/librte_vhost/vhost_cuse/virtio-net-cdev.c | 57 ++++----
lib/librte_vhost/vhost_rxtx.c | 53 +++----
lib/librte_vhost/vhost_user/virtio-net-user.c | 100 +++++++------
lib/librte_vhost/virtio-net.c | 143 +++++++++++-------
9 files changed, 475 insertions(+), 230 deletions(-)
--
1.8.4.2
next reply other threads:[~2015-05-07 13:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-07 13:00 Ouyang Changchun [this message]
2015-05-07 13:00 ` [dpdk-dev] [RFC PATCH 1/6] ixgbe: Support VMDq RSS in non-SRIOV environment Ouyang Changchun
2015-05-07 13:00 ` [dpdk-dev] [RFC PATCH 2/6] lib_vhost: Support multiple queues in virtio dev Ouyang Changchun
2015-05-07 13:00 ` [dpdk-dev] [RFC PATCH 3/6] lib_vhost: Set memory layout for multiple queues mode Ouyang Changchun
2015-05-07 13:00 ` [dpdk-dev] [RFC PATCH 4/6] vhost: Add new command line option: rxq Ouyang Changchun
2015-05-07 13:00 ` [dpdk-dev] [RFC PATCH 5/6] vhost: Support multiple queues Ouyang Changchun
2015-05-07 13:00 ` [dpdk-dev] [RFC PATCH 6/6] virtio: Resolve for control queue Ouyang Changchun
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