From patchwork Sat Mar 21 06:54:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wenxu X-Patchwork-Id: 1259295 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org (client-ip=140.211.166.133; helo=hemlock.osuosl.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=ucloud.cn Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48krwp45Rqz9sPR for ; Sat, 21 Mar 2020 17:54:34 +1100 (AEDT) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 1829489424; Sat, 21 Mar 2020 06:54:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3JodhcswCEYy; Sat, 21 Mar 2020 06:54:31 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 9C17E89383; Sat, 21 Mar 2020 06:54:31 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8470EC089F; Sat, 21 Mar 2020 06:54:31 +0000 (UTC) X-Original-To: dev@openvswitch.org Delivered-To: ovs-dev@lists.linuxfoundation.org Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id E1868C07FF for ; Sat, 21 Mar 2020 06:54:29 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id DEBC286813 for ; Sat, 21 Mar 2020 06:54:29 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vvlN2NAtNL6N for ; Sat, 21 Mar 2020 06:54:28 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from m9784.mail.qiye.163.com (m9784.mail.qiye.163.com [220.181.97.84]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 5B60C8679E for ; Sat, 21 Mar 2020 06:54:28 +0000 (UTC) Received: from localhost.localdomain (unknown [123.59.132.129]) by m9784.mail.qiye.163.com (Hmail) with ESMTPA id 9C56941610; Sat, 21 Mar 2020 14:54:21 +0800 (CST) From: wenxu@ucloud.cn To: simon.horman@netronome.com Date: Sat, 21 Mar 2020 14:54:21 +0800 Message-Id: <1584773661-6886-1-git-send-email-wenxu@ucloud.cn> X-Mailer: git-send-email 1.8.3.1 X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZSFVPSU1CQkJDS0xITkxMQllXWShZQU lCN1dZLVlBSVdZCQ4XHghZQVk1NCk2OjckKS43PlkG X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PAg6Ixw4KTgxQxM0EzoKHBQX EDwKCiNVSlVKTkNPTExITU1KTUNDVTMWGhIXVQweFQMOOw4YFxQOH1UYFUVZV1kSC1lBWUpJSFVO QlVKSElVSklCWVdZCAFZQUhNQk03Bg++ X-HM-Tid: 0a70fbdf03d02086kuqy9c56941610 Cc: dev@openvswitch.org Subject: [ovs-dev] [PATCH branch-2.12] dpif-netlink: avoid netlink modify flow put op failed after tc modify flow put op failed. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: ovs-dev-bounces@openvswitch.org Sender: "dev" From: wenxu The tc modify flow put always delete the original flow first and then add the new flow. If the modfiy flow put operation failed, the flow put operation will change from modify to create if success to delete the original flow in tc (which will be always failed with ENOENT, the flow is already be deleted before add the new flow in tc). Finally, the modify flow put will failed to add in kernel datapath. Signed-off-by: wenxu --- lib/dpif-netlink.c | 7 ++++++- lib/netdev-offload-tc.c | 7 +++++-- lib/netdev-offload.h | 3 +++ 3 files changed, 14 insertions(+), 3 deletions(-) diff --git a/lib/dpif-netlink.c b/lib/dpif-netlink.c index 7bc71d6..7e088c0 100644 --- a/lib/dpif-netlink.c +++ b/lib/dpif-netlink.c @@ -2038,6 +2038,7 @@ parse_flow_put(struct dpif_netlink *dpif, struct dpif_flow_put *put) info.dpif_class = dpif_class; info.tp_dst_port = dst_port; info.tunnel_csum_on = csum_on; + info.tc_modify_flow_deleted = false; err = netdev_flow_put(dev, &match, CONST_CAST(struct nlattr *, put->actions), put->actions_len, @@ -2088,7 +2089,11 @@ parse_flow_put(struct dpif_netlink *dpif, struct dpif_flow_put *put) out: if (err && err != EEXIST && (put->flags & DPIF_FP_MODIFY)) { /* Modified rule can't be offloaded, try and delete from HW */ - int del_err = netdev_flow_del(dev, put->ufid, put->stats); + int del_err = 0; + + if (!info.tc_modify_flow_deleted) { + del_err = netdev_flow_del(dev, put->ufid, put->stats); + } if (!del_err) { /* Delete from hw success, so old flow was offloaded. diff --git a/lib/netdev-offload-tc.c b/lib/netdev-offload-tc.c index 4cc044b..c95de1e 100644 --- a/lib/netdev-offload-tc.c +++ b/lib/netdev-offload-tc.c @@ -1359,9 +1359,12 @@ netdev_tc_flow_put(struct netdev *netdev, struct match *match, block_id = get_block_id_from_netdev(netdev); handle = get_ufid_tc_mapping(ufid, &prio, NULL); if (handle && prio) { + bool flow_deleted; + VLOG_DBG_RL(&rl, "updating old handle: %d prio: %d", handle, prio); - del_filter_and_ufid_mapping(ifindex, prio, handle, block_id, ufid, - hook); + flow_deleted = !del_filter_and_ufid_mapping(ifindex, prio, handle, + block_id, ufid, hook); + info->tc_modify_flow_deleted = flow_deleted; } if (!prio) { diff --git a/lib/netdev-offload.h b/lib/netdev-offload.h index 97a5006..34721ef 100644 --- a/lib/netdev-offload.h +++ b/lib/netdev-offload.h @@ -71,6 +71,9 @@ struct offload_info { * it will be in the pkt meta data. */ uint32_t flow_mark; + + bool tc_modify_flow_deleted; /* Indicate the tc modify flow put success + * to delete the original flow. */ }; int netdev_flow_flush(struct netdev *);