From c2daa08e1713c4799487bae6daf5d41e024ff736 Mon Sep 17 00:00:00 2001 From: Kangjie Xu Date: Mon, 17 Oct 2022 17:25:52 +0800 Subject: vhost-net: vhost-kernel: introduce vhost_net_virtqueue_reset() Introduce vhost_virtqueue_reset(), which can reset the specific virtqueue in the device. Then it will unmap vrings and the desc of the virtqueue. Here we do not reuse the vhost_net_stop_one() or vhost_dev_stop(), because they work at queue pair level. We do not use vhost_virtqueue_stop() because it may stop the device in the backend. This patch only considers the case of vhost-kernel, when NetClientDriver is NET_CLIENT_DRIVER_TAP. Furthermore, we do not need net->nc->info->poll() because it enables userspace datapath and we want to stop all datapaths for this reset virtqueue here. Signed-off-by: Kangjie Xu Signed-off-by: Xuan Zhuo Acked-by: Jason Wang Message-Id: <20221017092558.111082-10-xuanzhuo@linux.alibaba.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/net/vhost_net.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index 387e913e4e..85d85a4957 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -48,4 +48,6 @@ uint64_t vhost_net_get_acked_features(VHostNetState *net); int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu); +void vhost_net_virtqueue_reset(VirtIODevice *vdev, NetClientState *nc, + int vq_index); #endif -- cgit v1.2.3-55-g7522