From patchwork Fri Aug 9 10:07:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kalcok X-Patchwork-Id: 1970894 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=canonical.com header.i=@canonical.com header.a=rsa-sha256 header.s=20210705 header.b=DzisnIKM; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org (client-ip=140.211.166.136; helo=smtp3.osuosl.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=patchwork.ozlabs.org) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WgKPx1L9nz1ybT for ; Fri, 9 Aug 2024 20:09:09 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id E7AFF61300; Fri, 9 Aug 2024 10:09:05 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id MeXKiePJbNuw; Fri, 9 Aug 2024 10:09:03 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=2605:bc80:3010:104::8cd3:938; helo=lists.linuxfoundation.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver= DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org A9C74605F0 Authentication-Results: smtp3.osuosl.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=canonical.com header.i=@canonical.com header.a=rsa-sha256 header.s=20210705 header.b=DzisnIKM Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id A9C74605F0; Fri, 9 Aug 2024 10:09:03 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1C04DC0035; Fri, 9 Aug 2024 10:09:03 +0000 (UTC) X-Original-To: dev@openvswitch.org Delivered-To: ovs-dev@lists.linuxfoundation.org Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8B383C0033 for ; Fri, 9 Aug 2024 10:09:02 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 6D7D141340 for ; Fri, 9 Aug 2024 10:09:02 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id b6rU1NqjKB4x for ; Fri, 9 Aug 2024 10:09:00 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=185.125.188.121; helo=smtp-relay-canonical-1.canonical.com; envelope-from=martin.kalcok@canonical.com; receiver= DMARC-Filter: OpenDMARC Filter v1.4.2 smtp4.osuosl.org D64E34133F Authentication-Results: smtp4.osuosl.org; dmarc=pass (p=none dis=none) header.from=canonical.com DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org D64E34133F Authentication-Results: smtp4.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=canonical.com header.i=@canonical.com header.a=rsa-sha256 header.s=20210705 header.b=DzisnIKM Received: from smtp-relay-canonical-1.canonical.com (smtp-relay-canonical-1.canonical.com [185.125.188.121]) by smtp4.osuosl.org (Postfix) with ESMTPS id D64E34133F for ; Fri, 9 Aug 2024 10:08:59 +0000 (UTC) Received: from omen-desktop.. (178-143-45-30.static.orange.sk [178.143.45.30]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-1.canonical.com (Postfix) with ESMTPSA id 7E1FC3F214; Fri, 9 Aug 2024 10:08:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1723198136; bh=Jm+FEfp0vJJ2D+VLD9Fz3SlPrkBjw7JVAd+1lOHVe+g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DzisnIKMX1DQBZ8AuR3Mk8rmruxeDeAreQ8VrOCPNIfZLO7RoSimBqmNFP2T0Jhfn zvovsuen8WgTdXEKR0nOsYLNzfQtO1BTJl8WIHL2fY1BVBOOs4qxIJtIZeXkiytUGv G+Wvv62+Nsq6d3o82nDVYUPm/wt35RpHHX8drOwBA0LhrhvKUXeLuvwmwwp0i+peI3 m8igXKn7MuNJTr4ryXKBTZnYF8rmMU+T/qOInkDIqW4pUrtklQ3TFdPDkRuHQ6m1KJ JgYfFAnYM65DefwtivbPgJqAMjGJEv+/VruUNzmvCdUOQb8bxIUhiurfBZXQlLXxUG n5kL7OlS/cWpQ== From: Martin Kalcok To: dceara@redhat.com, odivlad@gmail.com, dev@openvswitch.org Date: Fri, 9 Aug 2024 12:07:27 +0200 Message-ID: <20240809100852.2440605-1-martin.kalcok@canonical.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <00a24b9e-92e7-4e3f-9c0f-12808f8c2abe@redhat.com> References: <00a24b9e-92e7-4e3f-9c0f-12808f8c2abe@redhat.com> MIME-Version: 1.0 Subject: [ovs-dev] [Patch ovn v6] northd: Routing protocol port redirection. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ovs-dev-bounces@openvswitch.org Sender: "dev" This change adds two new LRP options: * routing-protocol-redirect * routing-protocols These allow redirection of a routing protocol traffic to an Logical Switch Port. This enables external routing daemons to listen on an interface bound to an LSP and effectively act as if they were listening on (and speaking from) LRP's IP address. Option 'routing-protocols' takes a comma-separated list of routing protocols whose traffic should be redirected. Currently supported are BGP (tcp 179) and BFD (udp 3784). Option 'routing-protocol-redirect' expects a string with an LSP name. When both of these options are set, any traffic entering LS that's destined for LRP's IP addresses (including IPv6 LLA) and routing protocol's port number, is redirected to the LSP specified in the 'routing-protocol-redirect' value. NOTE: this feature is experimental and may be subject to removal/change in the future. Signed-off-by: Martin Kalcok --- v6 addresses broken documentation build and couple of code nits. northd/northd.c | 221 ++++++++++++++++++++++++++++++++++++++++ northd/northd.h | 7 ++ northd/ovn-northd.8.xml | 54 ++++++++++ ovn-nb.xml | 42 ++++++++ tests/ovn-northd.at | 93 +++++++++++++++++ tests/system-ovn.at | 100 ++++++++++++++++++ 6 files changed, 517 insertions(+) diff --git a/northd/northd.c b/northd/northd.c index 0c73e70df..420563389 100644 --- a/northd/northd.c +++ b/northd/northd.c @@ -13935,6 +13935,225 @@ build_arp_resolve_flows_for_lrp(struct ovn_port *op, } } +static void +build_routing_protocols_redirect_rule__( + const char *s_addr, const char *redirect_port_name, int protocol_port, + const char *proto, bool is_ipv6, struct ovn_port *ls_peer, + struct lflow_table *lflows, struct ds *match, struct ds *actions) +{ + int ip_ver = is_ipv6 ? 6 : 4; + ds_clear(actions); + ds_put_format(actions, "outport = \"%s\"; output;", redirect_port_name); + + /* Redirect packets in the input pipeline destined for LR's IP + * and the routing protocol's port to the LSP specified in + * 'routing-protocol-redirect' option.*/ + ds_clear(match); + ds_put_format(match, "ip%d.dst == %s && %s.dst == %d", ip_ver, s_addr, + proto, protocol_port); + ovn_lflow_add(lflows, ls_peer->od, S_SWITCH_IN_L2_LKUP, 100, + ds_cstr(match), + ds_cstr(actions), + ls_peer->lflow_ref); + + /* To accomodate "peer" nature of the routing daemons, redirect also + * replies to the daemons' client requests. */ + ds_clear(match); + ds_put_format(match, "ip%d.dst == %s && %s.src == %d", ip_ver, s_addr, + proto, protocol_port); + ovn_lflow_add(lflows, ls_peer->od, S_SWITCH_IN_L2_LKUP, 100, + ds_cstr(match), + ds_cstr(actions), + ls_peer->lflow_ref); +} + +static void +apply_routing_protocols_redirect__( + const char *s_addr, const char *redirect_port_name, int protocol_flags, + bool is_ipv6, struct ovn_port *ls_peer, struct lflow_table *lflows, + struct ds *match, struct ds *actions) +{ + if (protocol_flags & REDIRECT_BGP) { + build_routing_protocols_redirect_rule__(s_addr, redirect_port_name, + 179, "tcp", is_ipv6, ls_peer, + lflows, match, actions); + } + + if (protocol_flags & REDIRECT_BFD) { + build_routing_protocols_redirect_rule__(s_addr, redirect_port_name, + 3784, "udp", is_ipv6, ls_peer, + lflows, match, actions); + } + + /* Because the redirected port shares IP and MAC addresses with the LRP, + * special consideration needs to be given to the signaling protocols. */ + if (is_ipv6) { + /* Ensure that redirect port receives copy of NA messages destined to + * its IP.*/ + ds_clear(match); + ds_clear(actions); + ds_put_format(actions, "clone { outport = \"%s\"; output; };", + redirect_port_name); + ds_put_format(match, "ip6.dst == %s && nd_na", s_addr); + ovn_lflow_add(lflows, ls_peer->od, S_SWITCH_IN_L2_LKUP, 100, + ds_cstr(match), + ds_cstr(actions), + ls_peer->lflow_ref); + } else { + /* Ensure that redirect port receives copy of ARP replies destined to + * its IP */ + ds_clear(match); + ds_clear(actions); + ds_put_format(actions, "clone { outport = \"%s\"; output; };", + redirect_port_name); + ds_put_format(match, "arp.op == 2 && arp.tpa == %s", s_addr); + ovn_lflow_add(lflows, ls_peer->od, S_SWITCH_IN_L2_LKUP, 100, + ds_cstr(match), + ds_cstr(actions), + ls_peer->lflow_ref); + } +} + +static int +parse_redirected_routing_protocols(struct ovn_port *lrp) { + int redirected_protocol_flags = 0; + const char *redirect_protocols = smap_get(&lrp->nbrp->options, + "routing-protocols"); + if (redirect_protocols == NULL) { + return redirected_protocol_flags; + } + + char *proto; + char *save_ptr = NULL; + char *tokstr = xstrdup(redirect_protocols); + for (proto = strtok_r(tokstr, ",", &save_ptr); proto != NULL; + proto = strtok_r(NULL, ",", &save_ptr)) { + if (!strcmp(proto, "BGP")) { + redirected_protocol_flags |= REDIRECT_BGP; + continue; + } + + if (!strcmp(proto, "BFD")) { + redirected_protocol_flags |= REDIRECT_BFD; + continue; + } + + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "Option 'routing-protocols' encountered unknown " + "value %s", + proto); + } + free(tokstr); + return redirected_protocol_flags; +} + +static void +build_lrouter_routing_protocol_redirect( + struct ovn_port *op, struct lflow_table *lflows, + struct ds *match, struct ds *actions) +{ + /* LRP has to have a peer.*/ + if (op->peer == NULL) { + return; + } + + /* LRP has to have NB record.*/ + if (op->nbrp == NULL) { + return; + } + + /* Proceed only for LRPs that have 'routing-protocol-redirect' option set. + * Value of this option is the name of LSP to which the routing protocol + * traffic will be redirected. */ + const char *redirect_port = smap_get(&op->nbrp->options, + "routing-protocol-redirect"); + if (redirect_port == NULL) { + return; + } + + if (op->cr_port != NULL) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "Option 'routing-protocol-redirect' is not " + "supported on Distributed Gateway Port '%s'", + op->key); + return; + } + + /* Ensure that LSP, to which the routing protocol traffic is redirected, + * exists. */ + struct ovn_port *peer_lsp; + bool redirect_port_exists = false; + HMAP_FOR_EACH (peer_lsp, dp_node, &op->peer->od->ports) { + size_t peer_lsp_s = strlen(peer_lsp->key); + if (peer_lsp_s == strlen(redirect_port) + && !strncmp(peer_lsp->key, redirect_port, peer_lsp_s)){ + redirect_port_exists = true; + break; + } + } + + if (!redirect_port_exists) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "Option 'routing-protocol-redirect' set on Logical " + "Router Port '%s' refers to non-existent Logical " + "Switch Port. Routing protocol redirecting won't be " + "configured.", + op->key); + return; + } + + int redirected_protocols = parse_redirected_routing_protocols(op); + if (!redirected_protocols) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); + VLOG_WARN_RL(&rl, "Option 'routing-protocol-redirect' is set on " + "Logical Router Port '%s' but no known protocols " + "were set via 'routing-protocols' options. This " + "configuration has no effect.", + op->key); + return; + } + + /* Redirected traffic destined for LRP's IPs and the specified routing + * protocol ports to the port defined in 'routing-protocol-redirect' + * option.*/ + for (size_t i = 0; i < op->lrp_networks.n_ipv4_addrs; i++) { + const char *ip_s = op->lrp_networks.ipv4_addrs[i].addr_s; + apply_routing_protocols_redirect__(ip_s, redirect_port, + redirected_protocols, false, + op->peer, lflows,match, actions); + } + for (size_t i = 0; i < op->lrp_networks.n_ipv6_addrs; i++) { + const char *ip_s = op->lrp_networks.ipv6_addrs[i].addr_s; + apply_routing_protocols_redirect__(ip_s, redirect_port, + redirected_protocols, true, + op->peer, lflows,match, actions); + } + + /* Drop ARP replies and IPv6 RA/NA packets originating from + * 'routing-protocol-redirect' LSP. As this port shares IP and MAC + * addresses with LRP, we don't want to create duplicates.*/ + ds_clear(match); + ds_put_format(match, "inport == \"%s\" && arp.op == 2", redirect_port); + ovn_lflow_add(lflows, op->peer->od, S_SWITCH_IN_CHECK_PORT_SEC, 80, + ds_cstr(match), + REGBIT_PORT_SEC_DROP " = 1; next;", + op->peer->lflow_ref); + + ds_clear(match); + ds_put_format(match, "inport == \"%s\" && nd_na", redirect_port); + ovn_lflow_add(lflows, op->peer->od, S_SWITCH_IN_CHECK_PORT_SEC, 80, + ds_cstr(match), + REGBIT_PORT_SEC_DROP " = 1; next;", + op->peer->lflow_ref); + + ds_clear(match); + ds_put_format(match, "inport == \"%s\" && nd_ra", redirect_port); + ovn_lflow_add(lflows, op->peer->od, S_SWITCH_IN_CHECK_PORT_SEC, 80, + ds_cstr(match), + REGBIT_PORT_SEC_DROP " = 1; next;", + op->peer->lflow_ref); +} + /* This function adds ARP resolve flows related to a LSP. */ static void build_arp_resolve_flows_for_lsp( @@ -16900,6 +17119,8 @@ build_lswitch_and_lrouter_iterate_by_lrp(struct ovn_port *op, op->lflow_ref); build_lrouter_icmp_packet_toobig_admin_flows(op, lsi->lflows, &lsi->match, &lsi->actions, op->lflow_ref); + build_lrouter_routing_protocol_redirect(op, lsi->lflows, + &lsi->match, &lsi->actions); } static void * diff --git a/northd/northd.h b/northd/northd.h index e04ec5856..9e326b746 100644 --- a/northd/northd.h +++ b/northd/northd.h @@ -93,6 +93,13 @@ ovn_datapath_find_by_key(struct hmap *datapaths, uint32_t dp_key); bool od_has_lb_vip(const struct ovn_datapath *od); +/* List of routing and routing-related protocols which + * OVN is capable of redirecting from LRP to specific LSP. */ +enum redirected_routing_protcol_flag_type { + REDIRECT_BGP = (1 << 0), + REDIRECT_BFD = (1 << 1), +}; + struct tracked_ovn_ports { /* tracked created ports. * hmapx node data is 'struct ovn_port *' */ diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml index 3abd5f75b..ede38882a 100644 --- a/northd/ovn-northd.8.xml +++ b/northd/ovn-northd.8.xml @@ -284,6 +284,32 @@ dropped in the next stage. +
  • +

    + For each logical port that's defined as a target of routing protocol + redirecting (via routing-protocol-redirect option set on + Logical Router Port), a filter is set in place that disallows + following traffic exiting this port: +

    +
      +
    • + ARP replies +
      • +
    • + IPv6 Neighbor Discovery - Router Advertisements +
      • +
    • + IPv6 Neighbor Discovery - Neighbor Advertisements +
      • +
    +

    + Since this port shares IP and MAC addresses with the Logical Router + Port, we wan't to prevent duplicate replies and advertisements. This + is achieved by a rule with priority 80 that sets + REGBIT_PORT_SEC_DROP" = 1; next;". +

    +
    • +
  • For each (enabled) vtep logical port, a priority 70 flow is added which matches on all packets and applies the action @@ -2002,6 +2028,34 @@ output; on the logical switch.
    • +
  • +

    + For any logical port that's defined as a target of routing protocol + redirecting (via routing-protocol-redirect option set on + Logical Router Port), we redirect the traffic related to protocols + specified in routing-protocols option. It's acoomplished + with following priority-100 flows: +

    +
      +
    • + Flows that match Logical Router Port's IPs and destination port of + the routing daemon are redirected to this port to allow external + peers' connection to the daemon listening on this port. +
      • +
    • + Flows that match Logical Router Port's IPs and source port of + the routing daemon are redirected to this port to allow replies + from the peers. +
      • +
    +

    + In addition to this, we add priority-100 rules that + clone ARP replies and IPv6 Neighbor Advertisements to + this port as well. These allow to build proper ARP/IPv6 neighbor + list on this port. +

    +
    • +
  • Priority-90 flows for transit switches that forward registered IP multicast traffic to their corresponding multicast group , which diff --git a/ovn-nb.xml b/ovn-nb.xml index bbda423a5..2836f58f5 100644 --- a/ovn-nb.xml +++ b/ovn-nb.xml @@ -3575,6 +3575,48 @@ or

    + +

    + NOTE: this feature is experimental and may be subject to + removal/change in the future. +

    +

    + This option expects a name of a Logical Switch Port that's present + in the peer's Logical Switch. If set, it causes any traffic + that's destined for Logical Router Port's IP addresses (including + its IPv6 LLA) and the ports associated with routing protocols defined + ip routing-protocols option, to be redirected + to the specified Logical Switch Port. + + This allows external routing daemons to be bound to a port in OVN's + Logical Switch and act as if they were listening on Logical Router + Port's IP addresses. +

    +     + + +

    + NOTE: this feature is experimental and may be subject to + removal/change in the future. +

    +

    + This option expects a comma-separated list of routing, and + routing-related protocols, whose control plane traffic will be + redirected to a port specified in + routing-protocol-redirect option. Currently supported + options are: +

    +
      +
    • + BGP (forwards TCP port 179) +
      • +
    • + BFD (forwards UDP port 3784) +
      • +
    +     +

    When configured, represents a match expression, in the same diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at index f2f42275a..f1e206cfc 100644 --- a/tests/ovn-northd.at +++ b/tests/ovn-northd.at @@ -13757,3 +13757,96 @@ AT_CHECK([grep -e "172.168.0.110" -e "172.168.0.120" -e "10.0.0.3" -e "20.0.0.3" AT_CLEANUP ]) + +OVN_FOR_EACH_NORTHD_NO_HV([ +AT_SETUP([Routing protocol control plane redirect]) +ovn_start + +check ovn-sbctl chassis-add hv1 geneve 127.0.0.1 + +check ovn-nbctl lr-add lr -- \ + lrp-add lr lr-ls 02:ac:10:01:00:01 172.16.1.1/24 +check ovn-nbctl --wait=sb set logical_router lr options:chassis=hv1 + +check ovn-nbctl ls-add ls -- \ + lsp-add ls ls-lr -- \ + lsp-set-type ls-lr router -- \ + lsp-set-addresses ls-lr router -- \ + lsp-set-options ls-lr router-port=lr-ls + +check ovn-nbctl lsp-add ls lsp-bgp -- \ + lsp-set-addresses lsp-bgp unknown + +# Function that ensures that no redirect rules are installed. +check_no_redirect() { + AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_l2_lkup | grep -E "tcp.dst == 179|tcp.src == 179" | wc -l], [0], [0 +]) + + AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_check_port_sec | grep -E "priority=80" | wc -l], [0], [0 +]) + check_no_bfd_redirect +} + +# Function that ensures that no BFD redirect rules are installed. +check_no_bfd_redirect() { + AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_l2_lkup | grep -E "udp.dst == 3784|udp.src == 3784" | wc -l], [0], [0 +]) +} + +# By default, no rules related to routing protocol redirect are present +check_no_redirect + +# Set "lsp-bgp" port as target of BGP control plane redirected traffic +check ovn-nbctl --wait=sb set logical_router_port lr-ls options:routing-protocol-redirect=lsp-bgp +check ovn-nbctl --wait=sb set logical_router_port lr-ls options:routing-protocols=BGP + +# Check that BGP control plane traffic is redirected "lsp-bgp" +AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_l2_lkup | grep -E "tcp.dst == 179|tcp.src == 179" | ovn_strip_lflows], [0], [dnl + table=??(ls_in_l2_lkup ), priority=100 , match=(ip4.dst == 172.16.1.1 && tcp.dst == 179), action=(outport = "lsp-bgp"; output;) + table=??(ls_in_l2_lkup ), priority=100 , match=(ip4.dst == 172.16.1.1 && tcp.src == 179), action=(outport = "lsp-bgp"; output;) + table=??(ls_in_l2_lkup ), priority=100 , match=(ip6.dst == fe80::ac:10ff:fe01:1 && tcp.dst == 179), action=(outport = "lsp-bgp"; output;) + table=??(ls_in_l2_lkup ), priority=100 , match=(ip6.dst == fe80::ac:10ff:fe01:1 && tcp.src == 179), action=(outport = "lsp-bgp"; output;) +]) + +# Check that ARP/ND traffic is cloned to the "lsp-bgp" +AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_l2_lkup | grep "arp.op == 2 && arp.tpa == 172.16.1.1" | ovn_strip_lflows], [0], [dnl + table=??(ls_in_l2_lkup ), priority=100 , match=(arp.op == 2 && arp.tpa == 172.16.1.1), action=(clone { outport = "lsp-bgp"; output; };) +]) +AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_l2_lkup | grep "&& nd_na" | ovn_strip_lflows], [0], [dnl + table=??(ls_in_l2_lkup ), priority=100 , match=(ip6.dst == fe80::ac:10ff:fe01:1 && nd_na), action=(clone { outport = "lsp-bgp"; output; };) +]) + +# Check that at this point no BFD redirecting is present +check_no_bfd_redirect + +# Add BFD traffic redirect +check ovn-nbctl --wait=sb set logical_router_port lr-ls options:routing-protocols=BGP,BFD + +# Check that BFD traffic is redirected to "lsp-bgp" +AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_l2_lkup | grep -E "udp.dst == 3784|udp.src == 3784" | ovn_strip_lflows], [0], [dnl + table=??(ls_in_l2_lkup ), priority=100 , match=(ip4.dst == 172.16.1.1 && udp.dst == 3784), action=(outport = "lsp-bgp"; output;) + table=??(ls_in_l2_lkup ), priority=100 , match=(ip4.dst == 172.16.1.1 && udp.src == 3784), action=(outport = "lsp-bgp"; output;) + table=??(ls_in_l2_lkup ), priority=100 , match=(ip6.dst == fe80::ac:10ff:fe01:1 && udp.dst == 3784), action=(outport = "lsp-bgp"; output;) + table=??(ls_in_l2_lkup ), priority=100 , match=(ip6.dst == fe80::ac:10ff:fe01:1 && udp.src == 3784), action=(outport = "lsp-bgp"; output;) +]) + + +# Check that ARP replies and ND advertisements are blocked from exiting "lsp-bgp" +AT_CHECK([ovn-sbctl dump-flows ls | grep ls_in_check_port_sec | grep "priority=80" | ovn_strip_lflows], [0], [dnl + table=??(ls_in_check_port_sec), priority=80 , match=(inport == "lsp-bgp" && arp.op == 2), action=(reg0[[15]] = 1; next;) + table=??(ls_in_check_port_sec), priority=80 , match=(inport == "lsp-bgp" && nd_na), action=(reg0[[15]] = 1; next;) + table=??(ls_in_check_port_sec), priority=80 , match=(inport == "lsp-bgp" && nd_ra), action=(reg0[[15]] = 1; next;) +]) + +# Remove 'bgp-redirect' option from LRP and check that rules are removed +check ovn-nbctl --wait=sb remove logical_router_port lr-ls options routing-protocol-redirect +check ovn-nbctl --wait=sb remove logical_router_port lr-ls options routing-protocols +check_no_redirect + +# Set non-existent LSP as target of 'bgp-redirect' and check that no rules are added +check ovn-nbctl --wait=sb set logical_router_port lr-ls options:routing-protocol-redirect=lsp-foo +check ovn-nbctl --wait=sb set logical_router_port lr-ls options:routing-protocols=BGP,BFD +check_no_redirect + +AT_CLEANUP +]) diff --git a/tests/system-ovn.at b/tests/system-ovn.at index 7ba2e150b..93ed7d17b 100644 --- a/tests/system-ovn.at +++ b/tests/system-ovn.at @@ -13504,3 +13504,103 @@ OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d AT_CLEANUP ]) + +OVN_FOR_EACH_NORTHD([ +AT_SETUP([Routing protocol redirect]) +AT_SKIP_IF([test $HAVE_NC = no]) + +ovn_start +OVS_TRAFFIC_VSWITCHD_START() + +ADD_BR([br-int]) +ADD_BR([br-ext]) + +check ovs-ofctl add-flow br-ext action=normal +# Set external-ids in br-int needed for ovn-controller +check ovs-vsctl \ + -- set Open_vSwitch . external-ids:system-id=hv1 \ + -- set Open_vSwitch . external-ids:ovn-remote=unix:$ovs_base/ovn-sb/ovn-sb.sock \ + -- set Open_vSwitch . external-ids:ovn-encap-type=geneve \ + -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \ + -- set bridge br-int fail-mode=secure other-config:disable-in-band=true + +# Start ovn-controller +start_daemon ovn-controller + +check ovn-nbctl lr-add R1 \ + -- set Logical_Router R1 options:chassis=hv1 + +check ovn-nbctl ls-add public + +check ovn-nbctl lrp-add R1 rp-public 00:00:02:01:02:03 172.16.1.1/24 + +check ovn-nbctl lsp-add public public-rp -- set Logical_Switch_Port public-rp \ + type=router options:router-port=rp-public \ + -- lsp-set-addresses public-rp router + +check ovn-nbctl lsp-add public bgp-daemon \ + -- lsp-set-addresses bgp-daemon unknown + +AT_CHECK([ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phynet:br-ext]) +check ovn-nbctl lsp-add public public1 \ + -- lsp-set-addresses public1 unknown \ + -- lsp-set-type public1 localnet \ + -- lsp-set-options public1 network_name=phynet + +check ovn-nbctl --wait=hv sync + +# Set option that redirects BGP traffic to a LSP "bgp-daemon" +check ovn-nbctl --wait=sb set logical_router_port rp-public options:routing-protocol-redirect=bgp-daemon +check ovn-nbctl --wait=sb set logical_router_port rp-public options:routing-protocols=BGP + +# Create "bgp-daemon" interface in a namespace with IP and MAC matching LRP "rp-public" +ADD_NAMESPACES(bgp-daemon) +ADD_VETH(bgp-daemon, bgp-daemon, br-int, "172.16.1.1/24", "00:00:02:01:02:03") + +ADD_NAMESPACES(ext-foo) +ADD_VETH(ext-foo, ext-foo, br-ext, "172.16.1.100/24", "00:10:10:01:02:13", \ + "172.16.1.1") + +# Flip the interface down/up to get proper IPv6 LLA +NS_EXEC([bgp-daemon], [ip link set down bgp-daemon]) +NS_EXEC([bgp-daemon], [ip link set up bgp-daemon]) +NS_EXEC([ext-foo], [ip link set down ext-foo]) +NS_EXEC([ext-foo], [ip link set up ext-foo]) + +# Wait until IPv6 LLA loses the "tentative" flag otherwise it can't be bound to. +OVS_WAIT_UNTIL([NS_EXEC([bgp-daemon], [ip a show dev bgp-daemon | grep "fe80::" | grep -v tentative])]) +OVS_WAIT_UNTIL([NS_EXEC([ext-foo], [ip a show dev ext-foo | grep "fe80::" | grep -v tentative])]) + +# Verify that BGP control plane traffic is delivered to the "bgp-daemon" +# interface on both IPv4 and IPv6 LLA addresses +NETNS_DAEMONIZE([bgp-daemon], [nc -l -k 172.16.1.1 179], [bgp_v4.pid]) +NS_CHECK_EXEC([ext-foo], [echo "TCP test" | nc --send-only 172.16.1.1 179]) + +NETNS_DAEMONIZE([bgp-daemon], [nc -l -6 -k fe80::200:2ff:fe01:203%bgp-daemon 179], [bgp_v6.pid]) +NS_CHECK_EXEC([ext-foo], [echo "TCP test" | nc --send-only -6 fe80::200:2ff:fe01:203%ext-foo 179]) + +# Verify connection in other direction. i.e when daemon running on "bgp-daemon" port +# makes a client connection to its peer +NETNS_DAEMONIZE([ext-foo], [nc -l -k 172.16.1.100 179], [reply_bgp_v4.pid]) +NS_CHECK_EXEC([bgp-daemon], [echo "TCP test" | nc --send-only 172.16.1.100 179]) + +NETNS_DAEMONIZE([ext-foo], [nc -l -6 -k fe80::210:10ff:fe01:213%ext-foo 179], [reply_bgp_v6.pid]) +NS_CHECK_EXEC([bgp-daemon], [echo "TCP test" | nc --send-only -6 fe80::210:10ff:fe01:213%bgp-daemon 179]) + + +OVS_APP_EXIT_AND_WAIT([ovn-controller]) + +as ovn-sb +OVS_APP_EXIT_AND_WAIT([ovsdb-server]) + +as ovn-nb +OVS_APP_EXIT_AND_WAIT([ovsdb-server]) + +as northd +OVS_APP_EXIT_AND_WAIT([ovn-northd]) + +as +OVS_TRAFFIC_VSWITCHD_STOP(["/.*error receiving.*/d +/.*terminating with signal 15.*/d"]) +AT_CLEANUP +])