From patchwork Tue Nov 12 16:59:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Michelson X-Patchwork-Id: 1193691 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=140.211.169.12; helo=mail.linuxfoundation.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="EATLsOw3"; dkim-atps=neutral Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47CDWM0Kqhz9sP4 for ; Wed, 13 Nov 2019 03:59:58 +1100 (AEDT) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 7A33EE2C; Tue, 12 Nov 2019 16:59:39 +0000 (UTC) X-Original-To: dev@openvswitch.org Delivered-To: ovs-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id D2732E20 for ; Tue, 12 Nov 2019 16:59:37 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com [205.139.110.61]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id CB698712 for ; Tue, 12 Nov 2019 16:59:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573577974; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=sqeM6J/nlNCjKPwpNzvuPiLUebGQ+22dqhq4XcgD6hA=; b=EATLsOw3+goNNOiG9M+gnMnGuaH8PnTi9sXheaVuLg5wqI0dS7mwXbxm5eZKNkr3NdwjXD qxzh4qMvBnUDveIvHwVw87vS8UdBj+nAFeIRrbxQJ9IG9lx1bvInBV2u8G5GT1TknWuGsZ tPyVjtke06YcB/gsdyTslLYoMQ9OJQU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-290--zzpiFaRMcaxxTUcxhNdwg-1; Tue, 12 Nov 2019 11:59:33 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9B3541052A1F for ; Tue, 12 Nov 2019 16:59:32 +0000 (UTC) Received: from monae.redhat.com (ovpn-122-41.rdu2.redhat.com [10.10.122.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id 47A1160BE0 for ; Tue, 12 Nov 2019 16:59:32 +0000 (UTC) From: Mark Michelson To: dev@openvswitch.org Date: Tue, 12 Nov 2019 11:59:31 -0500 Message-Id: <20191112165931.23936-1-mmichels@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: -zzpiFaRMcaxxTUcxhNdwg-1 X-Mimecast-Spam-Score: 0 X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: [ovs-dev] [PATCH v2.12] ovn: Prevent erroneous duplicate IP address messages. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ovs-dev-bounces@openvswitch.org Errors-To: ovs-dev-bounces@openvswitch.org This is a backport to OVS 2.12 of OVN master commit 21c29d5b0c. When using dynamic address assignment for logical switches, OVN reserves the first address in the subnet for the attached router port to use. In commit 488d153ee87841c042af05bc0eb8b5481aaa98cf, the IPAM code was modified to add assigned router port addresses to IPAM. The use case for this was when a switch was joined to multiple routers, and all router addresses were dynamically assigned. However, that commit also made it so that when a router rightly claimed the first address in the subnet, ovn-northd would issue a warning about a duplicate IP address being set. This change fixes the issue by adding a special case so that we don't add the router's IP address to IPAM if it is the first address in the subnet. This prevents the warning message from appearing. Signed-off-by: Mark Michelson Acked-by: Numan Siddique Acked-by: Han ZHou --- ovn/northd/ovn-northd.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c index 6c6de2afd..1c9164924 100644 --- a/ovn/northd/ovn-northd.c +++ b/ovn/northd/ovn-northd.c @@ -1194,7 +1194,14 @@ ipam_add_port_addresses(struct ovn_datapath *od, struct ovn_port *op) for (size_t i = 0; i < lrp_networks.n_ipv4_addrs; i++) { uint32_t ip = ntohl(lrp_networks.ipv4_addrs[i].addr); - ipam_insert_ip(op->peer->od, ip); + /* If the router has the first IP address of the subnet, don't add + * it to IPAM. We already added this when we initialized IPAM for + * the datapath. This will just result in an erroneous message + * about a duplicate IP address. + */ + if (ip != op->peer->od->ipam_info.start_ipv4) { + ipam_insert_ip(op->peer->od, ip); + } } destroy_lport_addresses(&lrp_networks);