From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751796AbdEJDgc (ORCPT ); Tue, 9 May 2017 23:36:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41098 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751621AbdEJDga (ORCPT ); Tue, 9 May 2017 23:36:30 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 3E359C04B302 Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jasowang@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 3E359C04B302 From: Jason Wang To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com Cc: Jason Wang Subject: [PATCH net-next V4 00/10] vhost_net batch dequeuing Date: Wed, 10 May 2017 11:36:12 +0800 Message-Id: <1494387382-19916-1-git-send-email-jasowang@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 10 May 2017 03:36:30 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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