From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Graf Subject: [PATCH 0/3 v5] Open vSwitch zerocopy upcall Date: Mon, 11 Nov 2013 16:47:41 +0100 Message-ID: Cc: dev@openvswitch.org, netdev@vger.kernel.org, eric.dumazet@gmail.com, dborkman@redhat.com, bhutchings@solarflare.com To: jesse@nicira.com, davem@davemloft.net Return-path: Received: from merlin.infradead.org ([205.233.59.134]:37138 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753833Ab3KKPsA (ORCPT ); Mon, 11 Nov 2013 10:48:00 -0500 Sender: netdev-owner@vger.kernel.org List-ID: Respin of the zerocopy patches for the openvswitch upcall. V5: - Removed padding requirement in user space - Added OVS_DP_F_UNALIGNED flag let user space signal ability to receive unaligned Netlink messages, fall back to linear copy otherwise. V4: - Daniel Borkmann pointed out that the style in skbuff.h has changed in net-next, adapted to no longer using extern in headers. V3: - Removed unneeded alignment of nlmsg_len after padding V2: - Added skb_zerocopy_headlen() to calculate headroom of destination buffer. This also takes care of the from->head_frag issue. - Attribute alignment for frag_list case - API documentation - performance data for CHECKSUM_PARTIAL tx case Thomas Graf (3): net: Export skb_zerocopy() to zerocopy from one skb to another openvswitch: Allow user space to announce ability to accept unaligned Netlink messages openvswitch: Use skb_zerocopy() for upcall include/linux/skbuff.h | 3 ++ include/uapi/linux/openvswitch.h | 4 ++ net/core/skbuff.c | 85 ++++++++++++++++++++++++++++++++++++ net/netfilter/nfnetlink_queue_core.c | 59 ++----------------------- net/openvswitch/datapath.c | 58 ++++++++++++++++-------- net/openvswitch/datapath.h | 2 + 6 files changed, 139 insertions(+), 72 deletions(-) -- 1.8.3.1