From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Wang Subject: [PATCH net-next 0/3] XDP support for tap Date: Thu, 27 Jul 2017 17:25:30 +0800 Message-ID: <1501147533-12368-1-git-send-email-jasowang@redhat.com> Cc: Jason Wang To: davem@davemloft.net, mst@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi all: This series tries to implement XDP support for tap. Two path were implemented: - fast path: small & non-gso packet, For performance reason we do it at page level and use build_skb() to create skb if necessary. - slow path: big or gso packet, we don't want to lose the capability compared to generic XDP, so we export some generic xdp helpers and do it after skb was created. xdp1 shows about 47% improvement. Please review. Jason Wang (3): tap: use build_skb() for small packet net: export some generic xdp helpers tap: XDP support drivers/net/tun.c | 247 ++++++++++++++++++++++++++++++++++++++++++---- include/linux/netdevice.h | 2 + net/core/dev.c | 14 +-- 3 files changed, 236 insertions(+), 27 deletions(-) -- 2.7.4