vhost-net is a kernel device that allows to read packets from a tap device using virtio queues instead of regular read(2) and write(2). This enables a more eficient packet processing, as the memory can be written directly by the kernel to the userspace and back, instead of wasting bandwith on copies, and it enables to batch many packets in a single notification (through eventfds) both tx and rx. --- RFC: At this moment only to receive packets from the vhost kernel to the pasta binary is supported. It does not even support to refill more rx descriptors so the kernel can keep receiving packets! Just for early review to make sure we're on the same page. Eugenio Pérez (3): tap: specify the packet pool tap: implement vhost_call_cb tap: add die() on vhost error epoll_type.h | 4 + passt.c | 8 ++ passt.h | 13 +- tap.c | 366 +++++++++++++++++++++++++++++++++++++++++++++++++-- tap.h | 6 +- vu_common.c | 7 +- 6 files changed, 387 insertions(+), 17 deletions(-) -- 2.49.0