From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Abeni Subject: [PATCH net-next 0/2] ipv6: udp: exploit dev_scratch helpers Date: Mon, 26 Jun 2017 19:01:49 +0200 Message-ID: Cc: "David S. Miller" , Eric Dumazet To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:48996 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751101AbdFZRCV (ORCPT ); Mon, 26 Jun 2017 13:02:21 -0400 Sender: netdev-owner@vger.kernel.org List-ID: When bringing in the recent cache optimization for the UDP protocol, I forgot to leverage the newly introduced scratched area helpers in the UDPv6 code path. As a result, the UDPv6 implementation suffers some unnecessary performance penality when compared to v4. This series aim to bring back UDPv6 on equal footing in respect to v4. The first patch moves the shared helpers to the common include files, while the second uses them in the UDPv6 code. This gives 5-8% performance improvement for a system under flood with small UDPv6 packets. The performance delta is less than the one reported on the original patch set because the UDPv6 code path already leveraged some of the optimization. Paolo Abeni (2): udp: move scratch area helpers into the include file ipv6: udp: leverage scratch area helpers include/net/udp.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ net/ipv4/udp.c | 60 ------------------------------------------------------ net/ipv6/udp.c | 14 ++++++++----- 3 files changed, 70 insertions(+), 65 deletions(-) -- 2.9.4