| Message ID | 20200508163218.22592-10-lulu@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | vDPA support in qemu | expand |
On 2020/5/9 上午12:32, Cindy Lu wrote: > From: Jason Wang <jasowang@redhat.com> > > Vhost-vdpa introduces VHOST_VDPA_SET_VRING_ENABLE which complies the > semantic of queue_enable defined in virtio spec. This method can be > used for preventing device from executing request for a specific > virtqueue. This patch introduces the vhost_ops for this. > > Note that, we've already had vhost_set_vring_enable which has different > semantic which allows to enable or disable a specific virtqueue for > some kinds of vhost backends. E.g vhost-user use this to changes the > number of active queue pairs. > > Signed-off-by: Jason Wang <jasowang@redhat.com> Similarly, please place this patch before vhost-vdpa patches. Thanks > --- > hw/net/vhost_net-stub.c | 4 ++++ > hw/net/vhost_net.c | 11 ++++++++++- > include/net/vhost_net.h | 1 + > 3 files changed, 15 insertions(+), 1 deletion(-) > > diff --git a/hw/net/vhost_net-stub.c b/hw/net/vhost_net-stub.c > index aac0e98228..43e93e1a9a 100644 > --- a/hw/net/vhost_net-stub.c > +++ b/hw/net/vhost_net-stub.c > @@ -86,6 +86,10 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) > return 0; > } > > +int vhost_set_vring_ready(NetClientState *nc) > +{ > + return 0; > +} > int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) > { > return 0; > diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c > index eff9ec9177..6911282a0a 100644 > --- a/hw/net/vhost_net.c > +++ b/hw/net/vhost_net.c > @@ -375,7 +375,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, > goto err_start; > } > > - if (ncs[i].peer->vring_enable) { > + if (peer->vring_enable) { > /* restore vring enable state */ > r = vhost_set_vring_enable(peer, peer->vring_enable); > > @@ -496,6 +496,15 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) > return 0; > } > > +int vhost_set_vring_ready(NetClientState *nc) > +{ > + VHostNetState *net = get_vhost_net(nc); > + const VhostOps *vhost_ops = net->dev.vhost_ops; > + if (vhost_ops && vhost_ops->vhost_set_vring_ready) { > + return vhost_ops->vhost_set_vring_ready(&net->dev); > + } > + return 0; > +} > int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) > { > const VhostOps *vhost_ops = net->dev.vhost_ops; > diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h > index b47844bf29..247432a3b2 100644 > --- a/include/net/vhost_net.h > +++ b/include/net/vhost_net.h > @@ -35,6 +35,7 @@ int vhost_net_notify_migration_done(VHostNetState *net, char* mac_addr); > VHostNetState *get_vhost_net(NetClientState *nc); > > int vhost_set_vring_enable(NetClientState * nc, int enable); > +int vhost_set_vring_ready(NetClientState *nc); > > uint64_t vhost_net_get_acked_features(VHostNetState *net); >
diff --git a/hw/net/vhost_net-stub.c b/hw/net/vhost_net-stub.c index aac0e98228..43e93e1a9a 100644 --- a/hw/net/vhost_net-stub.c +++ b/hw/net/vhost_net-stub.c @@ -86,6 +86,10 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) return 0; } +int vhost_set_vring_ready(NetClientState *nc) +{ + return 0; +} int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) { return 0; diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index eff9ec9177..6911282a0a 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -375,7 +375,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, goto err_start; } - if (ncs[i].peer->vring_enable) { + if (peer->vring_enable) { /* restore vring enable state */ r = vhost_set_vring_enable(peer, peer->vring_enable); @@ -496,6 +496,15 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) return 0; } +int vhost_set_vring_ready(NetClientState *nc) +{ + VHostNetState *net = get_vhost_net(nc); + const VhostOps *vhost_ops = net->dev.vhost_ops; + if (vhost_ops && vhost_ops->vhost_set_vring_ready) { + return vhost_ops->vhost_set_vring_ready(&net->dev); + } + return 0; +} int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) { const VhostOps *vhost_ops = net->dev.vhost_ops; diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index b47844bf29..247432a3b2 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -35,6 +35,7 @@ int vhost_net_notify_migration_done(VHostNetState *net, char* mac_addr); VHostNetState *get_vhost_net(NetClientState *nc); int vhost_set_vring_enable(NetClientState * nc, int enable); +int vhost_set_vring_ready(NetClientState *nc); uint64_t vhost_net_get_acked_features(VHostNetState *net);