Re: [PATCH 2/6] lib_vhost: Support multiple queues in virtio dev
From: Xie, Huawei <hidden>
Date: 2015-06-03 02:47:29
On 5/21/2015 3:51 PM, Ouyang Changchun wrote:
quoted hunk ↗ jump to hunk
Each virtio device could have multiple queues, say 2 or 4, at most 8. Enabling this feature allows virtio device/port on guest has the ability to use different vCPU to receive/transmit packets from/to each queue. In multiple queues mode, virtio device readiness means all queues of this virtio device are ready, cleanup/destroy a virtio device also requires clearing all queues belong to it. Signed-off-by: Changchun Ouyang <redacted> --- lib/librte_vhost/rte_virtio_net.h | 15 ++- lib/librte_vhost/vhost_rxtx.c | 32 ++++--- lib/librte_vhost/vhost_user/vhost-net-user.c | 4 +- lib/librte_vhost/vhost_user/virtio-net-user.c | 97 +++++++++++++++---- lib/librte_vhost/vhost_user/virtio-net-user.h | 2 + lib/librte_vhost/virtio-net.c | 132 +++++++++++++++++--------- 6 files changed, 201 insertions(+), 81 deletions(-)diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h index 5d38185..3e82bef 100644 --- a/lib/librte_vhost/rte_virtio_net.h +++ b/lib/librte_vhost/rte_virtio_net.h@@ -59,6 +59,10 @@ struct rte_mbuf;
Some basic question: Does vhost have no way to know how many queues each virtio device has? rte_vhost_q_num_set would set the same number of queues for all virtio devices, so different virtio devices couldn't have different number of queues.