similar to: [PATCH 3/3] qemu-kvm: vhost-net implementation

This adds support for vhost-net virtio kernel backend. To enable (assuming device eth2): 1. enable promisc mode or program guest mac in device eth2 2. disable tso, gso, lro on the card 3. add vhost=eth0 to -net flag 4. run with CAP_NET_ADMIN priviledge (e.g. root) This patch is RFC, but works without issues for me. It still needs to be split up, tested and benchmarked properly, but posting it

This adds support for vhost-net virtio kernel backend. To enable (assuming device eth2): 1. enable promisc mode or program guest mac in device eth2 2. disable tso, gso, lro on the card 3. add vhost=eth0 to -net flag 4. run with CAP_NET_ADMIN priviledge (e.g. root) This patch is RFC, but works without issues for me. It still needs to be split up, tested and benchmarked properly, but posting it

This adds support for vhost-net virtio kernel backend. To enable (assuming device eth2): 1. enable promisc mode or program guest mac in device eth2 2. disable tso, gso, lro, jumbo frames on the card (disabling lro + jumbo frames should be sufficient, haven't tested this) 3. add vhost=eth2 to -net flag 4. run with CAP_NET_ADMIN priviledge (e.g. root) This patch is RFC, but works without

This adds support for vhost-net virtio kernel backend. To enable (assuming device eth2): 1. enable promisc mode or program guest mac in device eth2 2. disable tso, gso, lro, jumbo frames on the card (disabling lro + jumbo frames should be sufficient, haven't tested this) 3. add vhost=eth2 to -net flag 4. run with CAP_NET_ADMIN priviledge (e.g. root) This patch is RFC, but works without

This adds support for vhost-net virtio kernel backend. This patch is not intended to being merged yet. I'm posting it for the benefit of people testing the backend. Usage instructions: vhost currently requires MSI-X support in guest virtio. This means guests kernel version should be >= 2.6.31. To enable vhost, simply add ",vhost" flag to nic options. Example with tap backend:

This adds support for vhost-net virtio kernel backend. This patch is not intended to being merged yet. I'm posting it for the benefit of people testing the backend. Usage instructions: vhost currently requires MSI-X support in guest virtio. This means guests kernel version should be >= 2.6.31. To enable vhost, simply add ",vhost" flag to nic options. Example with tap backend:

From 83e942e0c7634121243478fa2f4e3459b33d4a67 Mon Sep 17 00:00:00 2001 From: Dor Laor <dor.laor@qumranet.com> Date: Wed, 19 Dec 2007 23:43:24 +0200 Subject: [PATCH] virtio network device This patch implements the backend support for the virtio network device. The device is optimized for virtualized environments by limiting the number of guest=>host transitions per-packet. In the best

From 83e942e0c7634121243478fa2f4e3459b33d4a67 Mon Sep 17 00:00:00 2001 From: Dor Laor <dor.laor@qumranet.com> Date: Wed, 19 Dec 2007 23:43:24 +0200 Subject: [PATCH] virtio network device This patch implements the backend support for the virtio network device. The device is optimized for virtualized environments by limiting the number of guest=>host transitions per-packet. In the best

From f244bcad756c4f761627557bb7f315b1d8f22fb2 Mon Sep 17 00:00:00 2001 From: Dor Laor <dor.laor@qumranet.com> Date: Thu, 20 Dec 2007 13:26:30 +0200 Subject: [PATCH] [VIRTIO-NET] Rx performance improvement The current performance are not good enough, the problem lies in qemu tap handling code that caused to pass packets one at a time and also to copy them to a temporal buffer. This patch

From f244bcad756c4f761627557bb7f315b1d8f22fb2 Mon Sep 17 00:00:00 2001 From: Dor Laor <dor.laor@qumranet.com> Date: Thu, 20 Dec 2007 13:26:30 +0200 Subject: [PATCH] [VIRTIO-NET] Rx performance improvement The current performance are not good enough, the problem lies in qemu tap handling code that caused to pass packets one at a time and also to copy them to a temporal buffer. This patch

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

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

Add raw network backend option which uses a packet socket to provide raw networking access. Once the socket is opened it's bound to a provided host interface, such that packets received on the interface are delivered to the VM and packets sent by the VM are sent to the interface. This is functionally similar to the existing pcap network backend, with the same advantages and problems.

Add raw network backend option which uses a packet socket to provide raw networking access. Once the socket is opened it's bound to a provided host interface, such that packets received on the interface are delivered to the VM and packets sent by the VM are sent to the interface. This is functionally similar to the existing pcap network backend, with the same advantages and problems.

This adds (incomplete) MSI-X support to virtio net device. Missing is save/load support, and command-line flag to control the feature. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 362 +++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 33 +++++ hw/pci.c | 35 ++++-- hw/pci.h

This adds (incomplete) MSI-X support to virtio net device. Missing is save/load support, and command-line flag to control the feature. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 362 +++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 33 +++++ hw/pci.c | 35 ++++-- hw/pci.h

This adds MSI-X support infrastructure and uses that to enable MSI-X support in virtio net device. Also add a global option to disable MSI-X. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/device-assignment.c | 2 + hw/msix.c | 447 ++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 38 ++++ hw/pci.c

This adds MSI-X support infrastructure and uses that to enable MSI-X support in virtio net device. Also add a global option to disable MSI-X. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/device-assignment.c | 2 + hw/msix.c | 447 ++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 38 ++++ hw/pci.c