This patch set introduced vectorized datapath for packed ring. The size of packed ring descriptor is 16Bytes. Four batched descriptors can just placed into one cacheline. AVX512 instructions can well handle this kind of data. Packed ring TX datapath can fully transformed into vectorized datapath. Rx datapath also can be vectorized by limiated features(TSO and mergeable).
Marvin Liu (7): net/virtio: add Rx free threshold setting net/virtio-user: add LRO parameter net/virtio: add vectorized packed ring Rx function net/virtio: reuse packed ring xmit functions net/virtio: add vectorized packed ring Tx function net/virtio: add election for vectorized datapath net/virtio: support meson build drivers/net/virtio/Makefile | 30 + drivers/net/virtio/meson.build | 1 + drivers/net/virtio/virtio_ethdev.c | 35 +- drivers/net/virtio/virtio_ethdev.h | 6 + drivers/net/virtio/virtio_pci.h | 2 + drivers/net/virtio/virtio_rxtx.c | 201 ++---- drivers/net/virtio/virtio_rxtx_packed_avx.c | 606 ++++++++++++++++++ .../net/virtio/virtio_user/virtio_user_dev.c | 8 +- .../net/virtio/virtio_user/virtio_user_dev.h | 2 +- drivers/net/virtio/virtio_user_ethdev.c | 17 +- drivers/net/virtio/virtqueue.h | 165 ++++- 11 files changed, 903 insertions(+), 170 deletions(-) create mode 100644 drivers/net/virtio/virtio_rxtx_packed_avx.c -- 2.17.1
