05ba3f63d1
We assume there's no cvq in the past, this is not true when we need control virtqueue support for vhost-user backends. So this patch implements the control virtqueue support for vhost-net. As datapath, the control virtqueue is also required to be coupled with the NetClientState. The vhost_net_start/stop() are tweaked to accept the number of datapath queue pairs plus the the number of control virtqueue for us to start and stop the vhost device. Signed-off-by: Jason Wang <jasowang@redhat.com> Message-Id: <20211020045600.16082-7-jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
104 lines
2.0 KiB
C
104 lines
2.0 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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