This is a emulation to virtio-blk dataplane, which push the data handling out of biglock. And it is a try to implement this process in userspace, while vhost-net in kernel.
The iperf's result show it improving the perfermance of base line, but still slower than vhost-net (maybe the rx path need optimized). Todo: implement fine lock for net-subsystem Liu Ping Fan (9): vring: split the modification and publish of used ring vring: introduce vring_restore() to restore from img event poll: make epoll work for normal fd event poll: pass event type to event callback event poll: enable event poll handle more than one event each time virtio net: introduce dataplane for virtio net tap: make tap peer work on dedicated data-plane thread virtio net: enable dataplane for virtio net configure: make virtio net dataplane configurable configure | 12 ++ hw/dataplane/Makefile.objs | 4 +- hw/dataplane/event-poll.c | 69 +++++-- hw/dataplane/event-poll.h | 14 ++- hw/dataplane/virtio-blk.c | 8 +- hw/dataplane/virtio-net.c | 444 ++++++++++++++++++++++++++++++++++++++++++++ hw/dataplane/virtio-net.h | 32 ++++ hw/dataplane/vring.c | 37 ++++ hw/dataplane/vring.h | 3 + hw/virtio-net.c | 94 +++++----- hw/virtio-net.h | 64 +++++++ hw/virtio-pci.c | 2 +- include/net/tap.h | 6 + net/tap.c | 92 +++++++++- 14 files changed, 806 insertions(+), 75 deletions(-) create mode 100644 hw/dataplane/virtio-net.c create mode 100644 hw/dataplane/virtio-net.h -- 1.7.4.4
