search for: vhost_net_get_featur

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. I see nice performance improvements: e.g. from 12 to 18 Gbit/s host to guest with netperf, but did not spend a lot of time testing performance. I hope others will try this out and report. Note: there

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. I see nice performance improvements: e.g. from 12 to 18 Gbit/s host to guest with netperf, but did not spend a lot of time testing performance. I hope others will try this out and report. Note: there

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. If you see issues or are just curious, you can turn the new feature off. For example: -global virtio-net-pci.event_idx=on -global virtio-blk-pci.event_idx=off Also, it's possible to try both

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. If you see issues or are just curious, you can turn the new feature off. For example: -global virtio-net-pci.event_idx=on -global virtio-blk-pci.event_idx=off Also, it's possible to try both

...20:37:34.000000000 -0700 @@ -5,6 +5,7 @@ #include <sys/ioctl.h> #include <linux/vhost.h> #include <linux/virtio_ring.h> +#include <linux/if_tun.h> #include <netpacket/packet.h> #include <net/ethernet.h> #include <net/if.h> @@ -38,15 +39,6 @@ unsigned vhost_net_get_features(struct v return features; } -void vhost_net_ack_features(struct vhost_net *net, unsigned features) -{ - net->dev.acked_features = net->dev.backend_features; - if (features & (1 << VIRTIO_F_NOTIFY_ON_EMPTY)) - net->dev.acked_features |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY...

...20:37:34.000000000 -0700 @@ -5,6 +5,7 @@ #include <sys/ioctl.h> #include <linux/vhost.h> #include <linux/virtio_ring.h> +#include <linux/if_tun.h> #include <netpacket/packet.h> #include <net/ethernet.h> #include <net/if.h> @@ -38,15 +39,6 @@ unsigned vhost_net_get_features(struct v return features; } -void vhost_net_ack_features(struct vhost_net *net, unsigned features) -{ - net->dev.acked_features = net->dev.backend_features; - if (features & (1 << VIRTIO_F_NOTIFY_ON_EMPTY)) - net->dev.acked_features |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY...

...net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -473,6 +473,7 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) } if (!get_vhost_net(nc->peer)) { + virtio_add_feature(&features, VIRTIO_F_VERSION_1); return features; } return vhost_net_get_features(get_vhost_net(nc->peer), features); -- 1.7.9.5

....c > @@ -473,6 +473,7 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) > } > > if (!get_vhost_net(nc->peer)) { > + virtio_add_feature(&features, VIRTIO_F_VERSION_1); > return features; > } > return vhost_net_get_features(get_vhost_net(nc->peer), features); > -- > 1.7.9.5

...net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -473,6 +473,7 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) } if (!get_vhost_net(nc->peer)) { + virtio_add_feature(&features, VIRTIO_F_VERSION_1); return features; } return vhost_net_get_features(get_vhost_net(nc->peer), features); -- 1.7.9.5

....c > @@ -473,6 +473,7 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) > } > > if (!get_vhost_net(nc->peer)) { > + virtio_add_feature(&features, VIRTIO_F_VERSION_1); > return features; > } > return vhost_net_get_features(get_vhost_net(nc->peer), features); > -- > 1.7.9.5

...l(hdev->control, VHOST_SET_MEM_TABLE, mem); + if (r < 0) + return -errno; + + for (i = 0; i < hdev->nvqs; ++i) { + r = vhost_virtqueue_init(hdev, + vdev, + hdev->vqs + i, + vdev->vq + i, + i); + if (r < 0) + return r; + } + + return 0; +} + +unsigned vhost_net_get_features(struct vhost_net *net) +{ + unsigned features = 0; + if (net->dev.features & (1 << VIRTIO_F_NOTIFY_ON_EMPTY)) + features |= VIRTIO_F_NOTIFY_ON_EMPTY; + if (net->dev.features & (1 << VIRTIO_RING_F_INDIRECT_DESC)) + features |= VIRTIO_RING_F_INDIRECT_DESC; + return featu...

...l(hdev->control, VHOST_SET_MEM_TABLE, mem); + if (r < 0) + return -errno; + + for (i = 0; i < hdev->nvqs; ++i) { + r = vhost_virtqueue_init(hdev, + vdev, + hdev->vqs + i, + vdev->vq + i, + i); + if (r < 0) + return r; + } + + return 0; +} + +unsigned vhost_net_get_features(struct vhost_net *net) +{ + unsigned features = 0; + if (net->dev.features & (1 << VIRTIO_F_NOTIFY_ON_EMPTY)) + features |= VIRTIO_F_NOTIFY_ON_EMPTY; + if (net->dev.features & (1 << VIRTIO_RING_F_INDIRECT_DESC)) + features |= VIRTIO_RING_F_INDIRECT_DESC; + return featu...

And yet another iteration of virtio-1 support in qemu, tested with the latest virtio kernel patches. Find it at git://github.com/cohuck/qemu virtio-1 Changes from v5: - fixed stupid bug in "virtio: support more feature bits": we need to define a proper prop backend for 64 bit wide handling... - don't negotiate revision 1 unless VERSION_1 is offered - use 64 bit wide features

And yet another iteration of virtio-1 support in qemu, tested with the latest virtio kernel patches. Find it at git://github.com/cohuck/qemu virtio-1 Changes from v5: - fixed stupid bug in "virtio: support more feature bits": we need to define a proper prop backend for 64 bit wide handling... - don't negotiate revision 1 unless VERSION_1 is offered - use 64 bit wide features

Hello all: This seires is an update of last version of multiqueue support to add multiqueue capability to both tap and virtio-net. Some kinds of tap backends has (macvatp in linux) or would (tap) support multiqueue. In such kind of tap backend, each file descriptor of a tap is a qeueu and ioctls were prodived to attach an exist tap file descriptor to the tun/tap device. So the patch let qemu to

Hello all: This seires is an update of last version of multiqueue support to add multiqueue capability to both tap and virtio-net. Some kinds of tap backends has (macvatp in linux) or would (tap) support multiqueue. In such kind of tap backend, each file descriptor of a tap is a qeueu and ioctls were prodived to attach an exist tap file descriptor to the tun/tap device. So the patch let qemu to

...32_t features) +static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) { VirtIONet *n = VIRTIO_NET(vdev); NetClientState *nc = qemu_get_queue(n->nic); @@ -471,9 +471,9 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) return vhost_net_get_features(get_vhost_net(nc->peer), features); } -static uint32_t virtio_net_bad_features(VirtIODevice *vdev) +static uint64_t virtio_net_bad_features(VirtIODevice *vdev) { - uint32_t features = 0; + uint64_t features = 0; /* Linux kernel 2.6.25. It understood MAC (as everyone must),...

...32_t features) +static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) { VirtIONet *n = VIRTIO_NET(vdev); NetClientState *nc = qemu_get_queue(n->nic); @@ -471,9 +471,9 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) return vhost_net_get_features(get_vhost_net(nc->peer), features); } -static uint32_t virtio_net_bad_features(VirtIODevice *vdev) +static uint64_t virtio_net_bad_features(VirtIODevice *vdev) { - uint32_t features = 0; + uint64_t features = 0; /* Linux kernel 2.6.25. It understood MAC (as everyone must),...

...ntState *nc = qemu_get_queue(n->nic); + if (index > 0) { + return features; + } + features |= (1 << VIRTIO_NET_F_MAC); if (!peer_has_vnet_hdr(n)) { @@ -471,10 +476,14 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) return vhost_net_get_features(get_vhost_net(nc->peer), features); } -static uint32_t virtio_net_bad_features(VirtIODevice *vdev) +static uint32_t virtio_net_bad_features(VirtIODevice *vdev, unsigned int index) { uint32_t features = 0; + if (index > 0) { + return 0; + } + /* Linux kernel 2.6....

...ntState *nc = qemu_get_queue(n->nic); + if (index > 0) { + return features; + } + features |= (1 << VIRTIO_NET_F_MAC); if (!peer_has_vnet_hdr(n)) { @@ -471,10 +476,14 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) return vhost_net_get_features(get_vhost_net(nc->peer), features); } -static uint32_t virtio_net_bad_features(VirtIODevice *vdev) +static uint32_t virtio_net_bad_features(VirtIODevice *vdev, unsigned int index) { uint32_t features = 0; + if (index > 0) { + return 0; + } + /* Linux kernel 2.6....