From patchwork Thu Feb 9 01:30:31 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarno Rajahalme X-Patchwork-Id: 725904 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3vJgXC2P2Cz9s7F for ; Thu, 9 Feb 2017 12:31:23 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752551AbdBIBbF (ORCPT ); Wed, 8 Feb 2017 20:31:05 -0500 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:48453 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752529AbdBIBbC (ORCPT ); Wed, 8 Feb 2017 20:31:02 -0500 Received: from mfilter22-d.gandi.net (mfilter22-d.gandi.net [217.70.178.150]) by relay2-d.mail.gandi.net (Postfix) with ESMTP id 8823CC5A51; Thu, 9 Feb 2017 02:30:58 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at mfilter22-d.gandi.net Received: from relay2-d.mail.gandi.net ([IPv6:::ffff:217.70.183.194]) by mfilter22-d.gandi.net (mfilter22-d.gandi.net [::ffff:10.0.15.180]) (amavisd-new, port 10024) with ESMTP id AZJRHoVBPpVF; Thu, 9 Feb 2017 02:30:57 +0100 (CET) X-Originating-IP: 208.91.1.34 Received: from sc9-mailhost1.vmware.com (unknown [208.91.1.34]) (Authenticated sender: jarno@ovn.org) by relay2-d.mail.gandi.net (Postfix) with ESMTPSA id B684AC5A50; Thu, 9 Feb 2017 02:30:55 +0100 (CET) From: Jarno Rajahalme To: netdev@vger.kernel.org Cc: jarno@ovn.org, joe@ovn.org, pshelar@ovn.org Subject: [PATCH v3 net-next 04/10] openvswitch: Unionize ovs_key_ct_label with a u32 array. Date: Wed, 8 Feb 2017 17:30:31 -0800 Message-Id: <1486603837-7202-5-git-send-email-jarno@ovn.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1486603837-7202-1-git-send-email-jarno@ovn.org> References: <1486603837-7202-1-git-send-email-jarno@ovn.org> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Make the array of labels in struct ovs_key_ct_label an union, adding a u32 array of the same byte size as the existing u8 array. It is faster to loop through the labels 32 bits at the time, which is also the alignment of netlink attributes. Signed-off-by: Jarno Rajahalme --- include/uapi/linux/openvswitch.h | 8 ++++++-- net/openvswitch/conntrack.c | 15 ++++++++------- 2 files changed, 14 insertions(+), 9 deletions(-) diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index 375d812..96aee34 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -446,9 +446,13 @@ struct ovs_key_nd { __u8 nd_tll[ETH_ALEN]; }; -#define OVS_CT_LABELS_LEN 16 +#define OVS_CT_LABELS_LEN_32 4 +#define OVS_CT_LABELS_LEN (OVS_CT_LABELS_LEN_32 * sizeof(__u32)) struct ovs_key_ct_labels { - __u8 ct_labels[OVS_CT_LABELS_LEN]; + union { + __u8 ct_labels[OVS_CT_LABELS_LEN]; + __u32 ct_labels_32[OVS_CT_LABELS_LEN_32]; + }; }; /* OVS_KEY_ATTR_CT_STATE flags */ diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c index a6ff374..f23934c 100644 --- a/net/openvswitch/conntrack.c +++ b/net/openvswitch/conntrack.c @@ -281,20 +281,21 @@ static int ovs_ct_set_labels(struct sk_buff *skb, struct sw_flow_key *key, /* Triggers a change event, which makes sense only for * confirmed connections. */ - int err = nf_connlabels_replace(ct, (u32 *)labels, (u32 *)mask, - OVS_CT_LABELS_LEN / sizeof(u32)); + int err = nf_connlabels_replace(ct, labels->ct_labels_32, + mask->ct_labels_32, + OVS_CT_LABELS_LEN_32); if (err) return err; } else { u32 *dst = (u32 *)cl->bits; - const u32 *msk = (const u32 *)mask->ct_labels; - const u32 *lbl = (const u32 *)labels->ct_labels; + const u32 *msk = mask->ct_labels_32; + const u32 *lbl = labels->ct_labels_32; int i; /* No-one else has access to the non-confirmed entry, copy * labels over, keeping any bits we are not explicitly setting. */ - for (i = 0; i < OVS_CT_LABELS_LEN / sizeof(u32); i++) + for (i = 0; i < OVS_CT_LABELS_LEN_32; i++) dst[i] = (dst[i] & ~msk[i]) | (lbl[i] & msk[i]); } @@ -866,8 +867,8 @@ static bool labels_nonzero(const struct ovs_key_ct_labels *labels) { size_t i; - for (i = 0; i < sizeof(*labels); i++) - if (labels->ct_labels[i]) + for (i = 0; i < OVS_CT_LABELS_LEN_32; i++) + if (labels->ct_labels_32[i]) return true; return false;