From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755510AbdL2KAP (ORCPT ); Fri, 29 Dec 2017 05:00:15 -0500 Received: from mx1.redhat.com ([209.132.183.28]:36466 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754903AbdL2KAO (ORCPT ); Fri, 29 Dec 2017 05:00:14 -0500 From: Jason Wang To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mst@redhat.com, jbrouer@redhat.com, Jason Wang Subject: [PATCH net-next 0/2] XDP transmission for tuntap Date: Fri, 29 Dec 2017 18:00:02 +0800 Message-Id: <1514541604-12728-1-git-send-email-jasowang@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Fri, 29 Dec 2017 10:00:14 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all: This series tries to implement XDP transmission (ndo_xdp_xmit) for tuntap. Pointer ring was used for queuing both XDP buffers and sk_buff, this is done by encoding the type into lowest bit of the pointer and storin XDP metadata in the headroom of XDP buff. Tests gets 3.05 Mpps when doing xdp_redirect_map from ixgbe to VM (testpmd + virtio-net in guest). Please review. Thanks Jason Wang (2): tun/tap: use ptr_ring instead of skb_array tuntap: XDP transmission drivers/net/tap.c | 41 ++++----- drivers/net/tun.c | 233 ++++++++++++++++++++++++++++++++++++++----------- drivers/vhost/net.c | 52 ++++++----- include/linux/if_tap.h | 6 +- include/linux/if_tun.h | 21 ++++- 5 files changed, 258 insertions(+), 95 deletions(-) -- 2.7.4