10f8a115a8
Introduce vhost_net_virtqueue_restart(), which can restart the specific virtqueue when the vhost net started running before. If it fails to restart the virtqueue, the device will be stopped. Here we do not reuse vhost_net_start_one() or vhost_dev_start() because they work at queue pair level. The mem table and features do not change, so we can call the vhost_virtqueue_start() to restart a specific queue. This patch only considers the case of vhost-kernel, when NetClientDriver is NET_CLIENT_DRIVER_TAP. 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: <20221017092558.111082-11-xuanzhuo@linux.alibaba.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
116 lines
2.3 KiB
C
116 lines
2.3 KiB
C
/*
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* vhost-net support
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*
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* Copyright Red Hat, Inc. 2010
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*
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* Authors:
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* Michael S. Tsirkin <mst@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "net/net.h"
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#include "net/tap.h"
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#include "net/vhost-user.h"
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#include "hw/virtio/virtio-net.h"
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#include "net/vhost_net.h"
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#include "qemu/error-report.h"
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uint64_t vhost_net_get_max_queues(VHostNetState *net)
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{
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return 1;
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}
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struct vhost_net *vhost_net_init(VhostNetOptions *options)
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{
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error_report("vhost-net support is not compiled in");
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return NULL;
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}
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int vhost_net_start(VirtIODevice *dev,
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NetClientState *ncs,
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int data_queue_pairs, int cvq)
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{
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return -ENOSYS;
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}
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void vhost_net_stop(VirtIODevice *dev,
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NetClientState *ncs,
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int data_queue_pairs, int cvq)
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{
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}
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void vhost_net_cleanup(struct vhost_net *net)
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{
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}
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uint64_t vhost_net_get_features(struct vhost_net *net, uint64_t features)
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{
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return features;
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}
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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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{
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return 0;
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}
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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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{
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return 0;
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}
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void vhost_net_ack_features(struct vhost_net *net, uint64_t features)
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{
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}
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uint64_t vhost_net_get_acked_features(VHostNetState *net)
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{
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return 0;
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}
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bool vhost_net_virtqueue_pending(VHostNetState *net, int idx)
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{
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return false;
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}
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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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{
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}
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int vhost_net_notify_migration_done(struct vhost_net *net, char* mac_addr)
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{
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return -1;
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}
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VHostNetState *get_vhost_net(NetClientState *nc)
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{
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return 0;
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}
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int vhost_set_vring_enable(NetClientState *nc, int enable)
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{
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return 0;
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}
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int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu)
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{
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return 0;
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}
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void vhost_net_virtqueue_reset(VirtIODevice *vdev, NetClientState *nc,
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int vq_index)
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{
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}
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int vhost_net_virtqueue_restart(VirtIODevice *vdev, NetClientState *nc,
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int vq_index)
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{
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return 0;
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}
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