{"id":2192594,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2192594/?format=json","web_url":"http://patchwork.ozlabs.org/project/ovn/patch/20260203202354.228161-1-lucas.vdias@luizalabs.com/","project":{"id":68,"url":"http://patchwork.ozlabs.org/api/1.2/projects/68/?format=json","name":"Open Virtual Network development","link_name":"ovn","list_id":"ovs-dev.openvswitch.org","list_email":"ovs-dev@openvswitch.org","web_url":"http://openvswitch.org/","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260203202354.228161-1-lucas.vdias@luizalabs.com>","list_archive_url":null,"date":"2026-02-03T20:23:54","name":"[ovs-dev,v2] northd, ic: Add hub-spoke options to adv DR routes learned in ovn-ic.","commit_ref":null,"pull_url":null,"state":"changes-requested","archived":false,"hash":"491f2d9d574eae45d6687d7948ea0d4adea55529","submitter":{"id":90169,"url":"http://patchwork.ozlabs.org/api/1.2/people/90169/?format=json","name":"Lucas Vargas Dias","email":"lucas.vdias@luizalabs.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ovn/patch/20260203202354.228161-1-lucas.vdias@luizalabs.com/mbox/","series":[{"id":490879,"url":"http://patchwork.ozlabs.org/api/1.2/series/490879/?format=json","web_url":"http://patchwork.ozlabs.org/project/ovn/list/?series=490879","date":"2026-02-03T20:23:54","name":"[ovs-dev,v2] northd, ic: Add hub-spoke options to adv DR routes learned in ovn-ic.","version":2,"mbox":"http://patchwork.ozlabs.org/series/490879/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2192594/comments/","check":"success","checks":"http://patchwork.ozlabs.org/api/patches/2192594/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","dev@openvswitch.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ovs-dev@lists.linuxfoundation.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=luizalabs.com header.i=@luizalabs.com\n header.a=rsa-sha256 header.s=google header.b=nly+CRQK;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org\n (client-ip=2605:bc80:3010::138; helo=smtp1.osuosl.org;\n envelope-from=ovs-dev-bounces@openvswitch.org; receiver=patchwork.ozlabs.org)","smtp1.osuosl.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key,\n unprotected) header.d=luizalabs.com header.i=@luizalabs.com\n header.a=rsa-sha256 header.s=google header.b=nly+CRQK","smtp3.osuosl.org; dmarc=pass (p=quarantine dis=none)\n header.from=luizalabs.com","smtp3.osuosl.org; dkim=pass (1024-bit key,\n unprotected) header.d=luizalabs.com header.i=@luizalabs.com\n header.a=rsa-sha256 header.s=google header.b=nly+CRQK"],"Received":["from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4f5FLv13hsz1xpg\n\tfor ; Wed, 04 Feb 2026 07:24:07 +1100 (AEDT)","from localhost (localhost [127.0.0.1])\n\tby smtp1.osuosl.org (Postfix) with ESMTP id 2D63783E1B;\n\tTue, 3 Feb 2026 20:24:05 +0000 (UTC)","from smtp1.osuosl.org ([127.0.0.1])\n by localhost (smtp1.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP\n id mhsDoICwKhMM; Tue, 3 Feb 2026 20:24:03 +0000 (UTC)","from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56])\n\tby smtp1.osuosl.org (Postfix) with ESMTPS id 7462683E05;\n\tTue, 3 Feb 2026 20:24:03 +0000 (UTC)","from lf-lists.osuosl.org (localhost [127.0.0.1])\n\tby lists.linuxfoundation.org (Postfix) with ESMTP id 4E12AC04FB;\n\tTue, 3 Feb 2026 20:24:03 +0000 (UTC)","from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136])\n by lists.linuxfoundation.org (Postfix) with ESMTP id 94C09C04FA\n for ; Tue, 3 Feb 2026 20:24:02 +0000 (UTC)","from localhost (localhost [127.0.0.1])\n by smtp3.osuosl.org (Postfix) with ESMTP id 82831606C6\n for ; Tue, 3 Feb 2026 20:24:02 +0000 (UTC)","from smtp3.osuosl.org ([127.0.0.1])\n by localhost (smtp3.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP\n id 1hPtFG4jMSRT for ;\n Tue, 3 Feb 2026 20:24:01 +0000 (UTC)","from mail-vk1-xa2b.google.com (mail-vk1-xa2b.google.com\n [IPv6:2607:f8b0:4864:20::a2b])\n by smtp3.osuosl.org (Postfix) with ESMTPS id 1CF1C605C6\n for ; Tue, 3 Feb 2026 20:24:00 +0000 (UTC)","by mail-vk1-xa2b.google.com with SMTP id\n 71dfb90a1353d-5664634a27fso11682e0c.1\n for ; Tue, 03 Feb 2026 12:24:00 -0800 (PST)","from WNEC-73GS814.. 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The LRs are interconnected by a transit switch.\nOn each AZ, we can configure the dynamic routing and exchange routes\nvia BGP with external BGP speakers.\n\nAZ1\nLS1 - LR1 - BGP Speaker1 - Local subnet1\n \\\n -----------------------\n transit switch\n -----------------------\nAZ2 /\nLS2 - LR2 - BGP Speaker2 - Local subnet2\n\nThe LR2 will learn the subnet1 prefix via ovn-ic but this prefix will\nnot be redistributed to BGP Speaker2 and it also happens with LR1.\nThis scenario uses the network's hub-and-spoke terminology where we can\nenable the hub-spoke on the LR for such redistribution.\nsubnet1 and subnet2 are configured as ic-source-dynamic=true in ovn-ic.\nAlso, consider the same scenario, but LR1 and LR2 learn the same subnet\nfor redundancy, hub-spoke option is disabled to not adv the subnet learned\nfrom BGP and advertised in ovn-ic in BGP speakers.\n\nSigned-off-by: Lucas Vargas Dias \n---\n NEWS | 6 ++\n ic/ovn-ic.c | 28 +++++++---\n northd/en-advertised-route-sync.c | 3 +\n northd/northd.c | 10 +++-\n northd/northd.h | 5 +-\n northd/ovn-northd.c | 1 -\n ovn-nb.xml | 21 +++++++\n tests/ovn-ic.at | 92 +++++++++++++++++++++++++++++++\n 8 files changed, 156 insertions(+), 10 deletions(-)","diff":"diff --git a/NEWS b/NEWS\nindex 2a2b5e12d..6002820f3 100644\n--- a/NEWS\n+++ b/NEWS\n@@ -40,6 +40,8 @@ Post v25.09.0\n * Add the \"options:dynamic-routing-no-learning\" to Logical Routers ports.\n If set to true, router port will not learn routes and will forget\n learned routes. This option has priority over its router counterpart.\n+ * Add support for hub-and-spoke propagation via the \"hub-spoke\" option\n+ in dynamic-routing-redistribute settings.\n - Add support for Network Function insertion in OVN with stateful traffic\n redirection capability in Logical Switch datapath. The feature introduces\n three new NB database tables:\n@@ -98,6 +100,10 @@ Post v25.09.0\n reserving an unused IP from the backend's subnet. This change allows\n using LRP IPs directly, eliminating the need to reserve additional IPs\n per backend port.\n+ - Add the external_ids:ic-source-dynamic key for\n+ Logical_Router_Static_Route to indicate whether a learned OVN-IC route\n+ originated from dynamic routing sources in the advertising availability\n+ zone.\n \n OVN v25.09.0 - xxx xx xxxx\n --------------------------\ndiff --git a/ic/ovn-ic.c b/ic/ovn-ic.c\nindex fd5ecefb3..e9fff2d4d 100644\n--- a/ic/ovn-ic.c\n+++ b/ic/ovn-ic.c\n@@ -1283,6 +1283,7 @@ struct ic_route_info {\n struct in6_addr prefix;\n unsigned int plen;\n struct in6_addr nexthop;\n+ bool is_src_dynamic;\n const char *origin;\n const char *route_table;\n const char *route_tag;\n@@ -1554,7 +1555,7 @@ add_to_routes_ad(struct hmap *routes_ad, const struct in6_addr prefix,\n const struct nbrec_logical_router_static_route *nb_route,\n const struct nbrec_logical_router *nb_lr,\n const struct nbrec_load_balancer *nb_lb,\n- const char *route_tag)\n+ const char *route_tag, bool is_src_dynamic)\n {\n ovs_assert(nb_route || nb_lrp || nb_lb || nb_lr);\n \n@@ -1573,6 +1574,7 @@ add_to_routes_ad(struct hmap *routes_ad, const struct in6_addr prefix,\n ic_route->nb_route = nb_route;\n ic_route->origin = origin;\n ic_route->route_table = route_table;\n+ ic_route->is_src_dynamic = is_src_dynamic;\n ic_route->nb_lrp = nb_lrp;\n ic_route->nb_lr = nb_lr;\n ic_route->nb_lb = nb_lb;\n@@ -1649,7 +1651,7 @@ add_static_to_routes_ad(\n \n add_to_routes_ad(routes_ad, prefix, plen, nexthop, ROUTE_ORIGIN_STATIC,\n nb_route->route_table, NULL, nb_route, nb_lr,\n- NULL, route_tag);\n+ NULL, route_tag, false);\n }\n \n static void\n@@ -1659,7 +1661,8 @@ add_network_to_routes_ad(struct hmap *routes_ad, const char *network,\n const struct smap *nb_options,\n const struct nbrec_logical_router *nb_lr,\n const char *route_tag,\n- const struct nbrec_logical_router_port *ts_lrp)\n+ const struct nbrec_logical_router_port *ts_lrp,\n+ bool is_src_dynamic)\n {\n struct in6_addr prefix, nexthop;\n unsigned int plen;\n@@ -1711,7 +1714,8 @@ add_network_to_routes_ad(struct hmap *routes_ad, const char *network,\n \n /* directly-connected routes go to
route table */\n add_to_routes_ad(routes_ad, prefix, plen, nexthop, ROUTE_ORIGIN_CONNECTED,\n- NULL, nb_lrp, NULL, nb_lr, NULL, route_tag);\n+ NULL, nb_lrp, NULL, nb_lr, NULL, route_tag,\n+ is_src_dynamic);\n }\n \n static void\n@@ -1769,7 +1773,7 @@ add_lb_vip_to_routes_ad(struct hmap *routes_ad, const char *vip_key,\n \n /* Lb vip routes go to
route table */\n add_to_routes_ad(routes_ad, vip_ip, plen, nexthop, ROUTE_ORIGIN_LB,\n- NULL, NULL, NULL, nb_lr, nb_lb, route_tag);\n+ NULL, NULL, NULL, nb_lr, nb_lb, route_tag, false);\n out:\n free(vip_str);\n }\n@@ -2187,6 +2191,12 @@ sync_learned_routes(struct ic_context *ctx,\n nbrec_logical_router_static_route_update_options_setkey(\n nb_route, \"origin\", isb_route->origin);\n free(uuid_s);\n+ bool is_src_dynamic = smap_get_bool(&isb_route->external_ids,\n+ \"ic-source-dynamic\", false);\n+ char *ic_source_dynamic_str = is_src_dynamic ?\n+ \"true\" : \"false\";\n+ nbrec_logical_router_static_route_update_external_ids_setkey(\n+ nb_route, \"ic-source-dynamic\", ic_source_dynamic_str);\n nbrec_logical_router_update_static_routes_addvalue(ic_lr->lr,\n nb_route);\n }\n@@ -2243,6 +2253,10 @@ ad_route_sync_external_ids(const struct ic_route_info *route_adv,\n \"ic-route-tag\");\n }\n }\n+\n+ char *ic_src_dynamic_str = route_adv->is_src_dynamic ? \"true\" : \"false\";\n+ icsbrec_route_update_external_ids_setkey(isb_route, \"ic-source-dynamic\",\n+ ic_src_dynamic_str);\n }\n \n /* Sync routes from routes_ad to IC-SB. */\n@@ -2372,7 +2386,7 @@ build_ts_routes_to_adv(struct ic_context *ctx,\n add_network_to_routes_ad(routes_ad, lrp->networks[j], lrp,\n ts_port_addrs,\n &nb_global->options,\n- lr, route_tag, ts_lrp);\n+ lr, route_tag, ts_lrp, false);\n }\n } else {\n /* The router port of the TS port is ignored. */\n@@ -2427,7 +2441,7 @@ build_ts_routes_to_adv(struct ic_context *ctx,\n add_network_to_routes_ad(routes_ad, sb_route->ip_prefix, NULL,\n ts_port_addrs,\n &nb_global->options,\n- lr, route_tag, ts_lrp);\n+ lr, route_tag, ts_lrp, true);\n }\n sbrec_learned_route_index_destroy_row(filter);\n }\ndiff --git a/northd/en-advertised-route-sync.c b/northd/en-advertised-route-sync.c\nindex be771391d..be046769f 100644\n--- a/northd/en-advertised-route-sync.c\n+++ b/northd/en-advertised-route-sync.c\n@@ -675,6 +675,8 @@ should_advertise_route(const struct uuidset *host_route_lrps,\n return drr_mode_NAT_is_set(drr);\n case ROUTE_SOURCE_LB:\n return drr_mode_LB_is_set(drr);\n+ case ROUTE_SOURCE_IC_DYNAMIC:\n+ return drr_mode_IC_DYNAMIC_is_set(drr);\n case ROUTE_SOURCE_LEARNED:\n OVS_NOT_REACHED();\n default:\n@@ -745,6 +747,7 @@ advertise_route_track_od(struct advertised_route_sync_data *data,\n &tracked_op->od->nbr->header_.uuid);\n }\n break;\n+ case ROUTE_SOURCE_IC_DYNAMIC:\n case ROUTE_SOURCE_CONNECTED:\n case ROUTE_SOURCE_STATIC:\n break;\ndiff --git a/northd/northd.c b/northd/northd.c\nindex b4bb4ba6d..fbb75533c 100644\n--- a/northd/northd.c\n+++ b/northd/northd.c\n@@ -870,6 +870,10 @@ parse_dynamic_routing_redistribute(\n out |= DRRM_LB;\n continue;\n }\n+ if (!strcmp(token, \"hub-spoke\")) {\n+ out |= DRRM_IC_DYNAMIC;\n+ continue;\n+ }\n static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);\n VLOG_WARN_RL(&rl,\n \"unknown dynamic-routing-redistribute option '%s' on %s\",\n@@ -12034,7 +12038,10 @@ parsed_routes_add_static(const struct ovn_datapath *od,\n enum route_source source;\n if (!strcmp(smap_get_def(&route->options, \"origin\", \"\"),\n ROUTE_ORIGIN_CONNECTED)) {\n- source = ROUTE_SOURCE_CONNECTED;\n+ bool ic_src_dynamic = smap_get_bool(&route->external_ids,\n+ \"ic-source-dynamic\", false);\n+ source = ic_src_dynamic ?\n+ ROUTE_SOURCE_IC_DYNAMIC : ROUTE_SOURCE_CONNECTED;\n } else {\n source = ROUTE_SOURCE_STATIC;\n }\n@@ -12129,6 +12136,7 @@ route_source_to_offset(enum route_source source)\n {\n switch (source) {\n case ROUTE_SOURCE_CONNECTED:\n+ case ROUTE_SOURCE_IC_DYNAMIC:\n return ROUTE_PRIO_OFFSET_CONNECTED;\n case ROUTE_SOURCE_STATIC:\n return ROUTE_PRIO_OFFSET_STATIC;\ndiff --git a/northd/northd.h b/northd/northd.h\nindex eb5c15f34..e6ed2cc3e 100644\n--- a/northd/northd.h\n+++ b/northd/northd.h\n@@ -372,7 +372,8 @@ struct mcast_port_info {\n DRR_MODE(CONNECTED_AS_HOST, 1) \\\n DRR_MODE(STATIC, 2) \\\n DRR_MODE(NAT, 3) \\\n- DRR_MODE(LB, 4)\n+ DRR_MODE(LB, 4) \\\n+ DRR_MODE(IC_DYNAMIC, 5)\n \n enum dynamic_routing_redistribute_mode_bits {\n #define DRR_MODE(PROTOCOL, BIT) DRRM_##PROTOCOL##_BIT = BIT,\n@@ -826,6 +827,8 @@ enum route_source {\n ROUTE_SOURCE_NAT,\n /* The route is derived from a LB's VIP. */\n ROUTE_SOURCE_LB,\n+ /* The route is derived from an ovn-controller and advertised to IC. */\n+ ROUTE_SOURCE_IC_DYNAMIC,\n };\n \n struct parsed_route {\ndiff --git a/northd/ovn-northd.c b/northd/ovn-northd.c\nindex 7d7568c6f..bc3969053 100644\n--- a/northd/ovn-northd.c\n+++ b/northd/ovn-northd.c\n@@ -905,7 +905,6 @@ main(int argc, char *argv[])\n &nbrec_load_balancer_col_external_ids,\n &nbrec_load_balancer_health_check_col_external_ids,\n &nbrec_logical_router_policy_col_external_ids,\n- &nbrec_logical_router_static_route_col_external_ids,\n &nbrec_meter_col_external_ids,\n &nbrec_meter_band_col_external_ids,\n &nbrec_mirror_col_external_ids,\ndiff --git a/ovn-nb.xml b/ovn-nb.xml\nindex 1acbf202b..5f9b47491 100644\n--- a/ovn-nb.xml\n+++ b/ovn-nb.xml\n@@ -3374,6 +3374,13 @@ or\n Logical Switch.\n

\n \n+

\n+ If hub-spoke is in the list then northd will synchronize\n+ dynamic routes learned through OVN-IC from other routers into the\n+ table, enabling\n+ hub-and-spoke propagation.\n+

\n+\n

\n This value can be overwritten on a per LRP basis using\n \n \n+

\n+ If hub-spoke is in the list then northd will synchronize\n+ dynamic routes learned through OVN-IC from other routers into the\n+ table, enabling\n+ hub-and-spoke propagation.\n+

\n+\n

\n If not set the value from on the\n@@ -4823,6 +4837,13 @@ or\n database.\n \n \n+ \n+ ovn-ic populates this key for routes learned from\n+ . The value is true if the\n+ learned route originated from dynamic sources (e.g. learned routes)\n+ in the advertising availability zone, otherwise false.\n+ \n+\n \n \n See External IDs at the beginning of this document.\ndiff --git a/tests/ovn-ic.at b/tests/ovn-ic.at\nindex 370a755be..a62d02da0 100644\n--- a/tests/ovn-ic.at\n+++ b/tests/ovn-ic.at\n@@ -4586,3 +4586,95 @@ OVN_CLEANUP_IC([az1], [az2])\n \n AT_CLEANUP\n ])\n+\n+\n+OVN_FOR_EACH_NORTHD([\n+AT_SETUP([ovn-ic -- Check ovn-ic adv and learn from SB Learned Route - hub and spoke mode])\n+\n+ovn_init_ic_db\n+\n+for i in 1 2; do\n+ ovn_start az$i\n+ ovn_as az$i\n+\n+ # Enable route learning at AZ level\n+ check ovn-nbctl set nb_global . options:ic-route-learn=true\n+ # Enable route advertising at AZ level\n+ check ovn-nbctl set nb_global . options:ic-route-adv=true\n+done\n+\n+# Create new transit switches and LRs. Test topology is next:\n+#\n+#\n+# logical router (lr11) - transit switch (ts11) - logical router (lr12)\n+#\n+#\n+\n+# Create lr11, lr12 and ts11 and connect them\n+for i in 1 2; do\n+ ovn_as az$i\n+\n+ lr=lr1$i\n+ check ovn-nbctl lr-add $lr\n+\n+ ts=ts11\n+ check ovn-ic-nbctl --wait=sb --may-exist ts-add $ts\n+\n+ lrp=lrp-$lr-$ts\n+ lsp=lsp-$ts-$lr\n+ # Create LRP and connect to TS\n+ check ovn-nbctl lrp-add $lr $lrp aa:aa:aa:aa:a1:0$i 169.254.101.$i/24\n+ check ovn-nbctl lsp-add-router-port $ts $lsp $lrp\n+done\n+\n+# Create directly-connected route in lr12\n+check ovn_as az2 ovn-nbctl lrp-add lr12 lrp-lr12 aa:aa:aa:aa:bb:01 \"192.168.0.1/24\"\n+OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 | grep 192.168 |\n+ grep learned | awk '{print $1, $2}' | sort ], [0], [dnl\n+192.168.0.0/24 169.254.101.2\n+])\n+\n+ovn_as az2\n+check ovn-nbctl --wait=sb set Logical_Router lr12 option:dynamic-routing=true \\\n+ option:dynamic-routing-redistribute=\"connected,static\"\n+check ovn_as az2 ovn-nbctl --wait=sb lrp-add lr12 lr12-dr1 00:00:00:00:ff:01 10.0.0.1/24\n+dr1=$(fetch_column port_binding _uuid logical_port=lr12-dr1)\n+datapath=$(fetch_column datapath_binding _uuid external_ids:name=lr12)\n+\n+check_uuid ovn-sbctl create Learned_Route \\\n+ datapath=$datapath \\\n+ logical_port=$dr1 \\\n+ ip_prefix=192.168.1.0/24 \\\n+ nexthop=10.0.0.20\n+\n+# Check Learned_Route adv in ovn-ic\n+OVS_WAIT_FOR_OUTPUT([ovn_as az1 ovn-nbctl lr-route-list lr11 |\n+ grep learned | awk '{print $1, $2}' | sort ], [0], [dnl\n+10.0.0.0/24 169.254.101.2\n+192.168.0.0/24 169.254.101.2\n+192.168.1.0/24 169.254.101.2\n+])\n+\n+ovn_as az1\n+check ovn-nbctl --wait=sb set Logical_Router lr11 option:dynamic-routing=true \\\n+ option:dynamic-routing-redistribute=\"connected,static\"\n+# Advertise just 10.0.0.0/24 and 192.168.0.0/24 routes\n+check_row_count Advertised_Route 1 ip_prefix=192.168.0.0/24\n+check_row_count Advertised_Route 1 ip_prefix=10.0.0.0/24\n+check_row_count Advertised_Route 0 ip_prefix=192.168.1.0/24\n+\n+\n+ovn_as az1\n+check ovn-nbctl --wait=sb set Logical_Router lr11 \\\n+ option:dynamic-routing-redistribute=\"connected,static,hub-spoke\"\n+# Advertise just 10.0.0.0/24, 192.168.0.0/24 and 192.168.1.0/24 routes\n+# Route 192.168.1.0/24 is learned by DR from other logical routes (lr12)\n+# And lr12 Advertised it in ovn-ic. Hub-spoke option enable re-routing in lr11\n+check_row_count Advertised_Route 1 ip_prefix=192.168.0.0/24\n+check_row_count Advertised_Route 1 ip_prefix=10.0.0.0/24\n+check_row_count Advertised_Route 1 ip_prefix=192.168.1.0/24\n+\n+OVN_CLEANUP_IC([az1], [az2])\n+\n+AT_CLEANUP\n+])\n","prefixes":["ovs-dev","v2"]}