From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next V2 0/3] XDP support for tap Date: Sun, 13 Aug 2017 19:56:49 -0700 (PDT) Message-ID: <20170813.195649.1320361489777509765.davem@davemloft.net> References: <1502451678-17358-1-git-send-email-jasowang@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: mst@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kubakici@wp.pl To: jasowang@redhat.com Return-path: In-Reply-To: <1502451678-17358-1-git-send-email-jasowang@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Jason Wang Date: Fri, 11 Aug 2017 19:41:15 +0800 > 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 41% improvement, xdp_redirect shows about 60% > improvement. > > Changes from V1: > - fix the race between xdp set and free > - don't hold extra refcount > - add XDP_REDIRECT support > > Please review. Series applied, thanks Jason.