similar to: [PATCHv2 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

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

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at

Extend virtio to support many interrupt vectors, and rearrange code in preparation for multi-vector support (mostly move reset out to bindings, because we will have to reset the vectors in transport-specific code). Actual bindings in pci, and use in net, to follow. Load and save are not connected to bindings yet, so they are left stubbed out for now. Signed-off-by: Michael S. Tsirkin <mst at