This series tries to implement rx batching for vhost-net. This is done by batching the dequeuing from skb_array which was exported by underlayer socket and pass the sbk back through msg_control to finish userspace copying. This is also the requirement for more batching implemention on rx path.
Tests shows at most 8.8% improvment bon rx pps on top of batch zeroing. Please review. Thanks Changes from V3: - add batch zeroing patch to fix the build warnings Changes from V2: - rebase to net-next HEAD - use unconsume helpers to put skb back on releasing - introduce and use vhost_net internal buffer helpers - renew performance numbers on top of batch zeroing Changes from V1: - switch to use for() in __ptr_ring_consume_batched() - rename peek_head_len_batched() to fetch_skbs() - use skb_array_consume_batched() instead of skb_array_consume_batched_bh() since no consumer run in bh - drop the lockless peeking patch since skb_array could be resized, so it's not safe to call lockless one Jason Wang (8): skb_array: introduce skb_array_unconsume ptr_ring: introduce batch dequeuing skb_array: introduce batch dequeuing tun: export skb_array tap: export skb_array tun: support receiving skb through msg_control tap: support receiving skb from msg_control vhost_net: try batch dequing from skb array Michael S. Tsirkin (2): ptr_ring: batch ring zeroing ptr_ring: add ptr_ring_unconsume drivers/net/tap.c | 25 ++++++- drivers/net/tun.c | 31 ++++++-- drivers/vhost/net.c | 117 +++++++++++++++++++++++++++-- include/linux/if_tap.h | 5 ++ include/linux/if_tun.h | 5 ++ include/linux/ptr_ring.h | 183 +++++++++++++++++++++++++++++++++++++++++++--- include/linux/skb_array.h | 31 ++++++++ 7 files changed, 370 insertions(+), 27 deletions(-) -- 2.7.4
