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c2daa08e17
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 <kangjie.xu@linux.alibaba.com> Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20221017092558.111082-10-xuanzhuo@linux.alibaba.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
#ifndef VHOST_NET_H
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#define VHOST_NET_H
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#include "net/net.h"
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#include "hw/virtio/vhost-backend.h"
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#define VHOST_NET_INIT_FAILED \
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"vhost-net requested but could not be initialized"
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struct vhost_net;
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typedef struct vhost_net VHostNetState;
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typedef struct VhostNetOptions {
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VhostBackendType backend_type;
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NetClientState *net_backend;
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uint32_t busyloop_timeout;
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unsigned int nvqs;
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void *opaque;
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} VhostNetOptions;
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uint64_t vhost_net_get_max_queues(VHostNetState *net);
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struct vhost_net *vhost_net_init(VhostNetOptions *options);
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int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
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int data_queue_pairs, int cvq);
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void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs,
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int data_queue_pairs, int cvq);
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void vhost_net_cleanup(VHostNetState *net);
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uint64_t vhost_net_get_features(VHostNetState *net, uint64_t features);
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void vhost_net_ack_features(VHostNetState *net, uint64_t features);
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int vhost_net_get_config(struct vhost_net *net, uint8_t *config,
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uint32_t config_len);
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int vhost_net_set_config(struct vhost_net *net, const uint8_t *data,
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uint32_t offset, uint32_t size, uint32_t flags);
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bool vhost_net_virtqueue_pending(VHostNetState *net, int n);
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void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev,
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int idx, bool mask);
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int vhost_net_notify_migration_done(VHostNetState *net, char* mac_addr);
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VHostNetState *get_vhost_net(NetClientState *nc);
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int vhost_set_vring_enable(NetClientState * nc, int enable);
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uint64_t vhost_net_get_acked_features(VHostNetState *net);
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int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu);
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void vhost_net_virtqueue_reset(VirtIODevice *vdev, NetClientState *nc,
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int vq_index);
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#endif
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