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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: , X-Patchwork-Original-From: Felix Huettner via dev From: Felix Huettner Reply-To: Felix Huettner Errors-To: ovs-dev-bounces@openvswitch.org Sender: "dev" In most cases IPv4 packets are routed only over other IPv4 networks and IPv6 packets are routed only over IPv6 networks. However there is no inherent reason for this limitation. Routing IPv4 packets over IPv6 networks just requires the router to contain a route for an IPv4 network with an IPv6 nexthop. This was previously prevented in OVN in ovn-nbctl and northd. By removing these filters the forwarding will work if the mac addresses are prepopulated. If the mac addresses are not prepopulated we will attempt to resolve them using the original address family of the packet and not the address family of the nexthop. This will fail and we will not forward the packet. This feature can for example be used by service providers to interconnect multiple IPv4 networks of a customer without needing to negotiate free IPv4 addresses by just using any IPv6 address. Signed-off-by: Felix Huettner --- v2->v3: fix uninitialized variable v1->v2: - move ipv4 info to parsed_route - add tests for lr-route-add - switch tests to use fmt_pkt - some minor test cleanups NEWS | 4 + northd/northd.c | 57 ++--- tests/ovn-nbctl.at | 26 ++- tests/ovn.at | 511 ++++++++++++++++++++++++++++++++++++++++++ utilities/ovn-nbctl.c | 12 +- 5 files changed, 571 insertions(+), 39 deletions(-) base-commit: c141d8b1961459a6e9a1834f33613d8be079310e diff --git a/NEWS b/NEWS index 141f1831c..14a935c86 100644 --- a/NEWS +++ b/NEWS @@ -13,6 +13,10 @@ Post v24.03.0 "lflow-stage-to-oftable STAGE_NAME" that converts stage name into OpenFlow table id. - Rename the ovs-sandbox script to ovn-sandbox. + - Allow Static Routes where the address families of ip_prefix and nexthop + diverge (e.g. IPv4 packets over IPv6 links). This is currently limited to + nexthops that have their mac addresses prepopulated (so + dynamic_neigh_routers must be false). OVN v24.03.0 - 01 Mar 2024 -------------------------- diff --git a/northd/northd.c b/northd/northd.c index 331d9c267..f2357af15 100644 --- a/northd/northd.c +++ b/northd/northd.c @@ -10194,6 +10194,8 @@ struct parsed_route { const struct nbrec_logical_router_static_route *route; bool ecmp_symmetric_reply; bool is_discard_route; + bool is_ipv4_prefix; + bool is_ipv4_nexthop; }; static uint32_t @@ -10219,6 +10221,8 @@ parsed_routes_add(struct ovn_datapath *od, const struct hmap *lr_ports, /* Verify that the next hop is an IP address with an all-ones mask. */ struct in6_addr nexthop; unsigned int plen; + bool is_ipv4_nexthop = true; + bool is_ipv4_prefix; bool is_discard_route = !strcmp(route->nexthop, "discard"); bool valid_nexthop = route->nexthop[0] && !is_discard_route; if (valid_nexthop) { @@ -10237,6 +10241,7 @@ parsed_routes_add(struct ovn_datapath *od, const struct hmap *lr_ports, UUID_ARGS(&route->header_.uuid)); return NULL; } + is_ipv4_nexthop = IN6_IS_ADDR_V4MAPPED(&nexthop); } /* Parse ip_prefix */ @@ -10248,18 +10253,7 @@ parsed_routes_add(struct ovn_datapath *od, const struct hmap *lr_ports, UUID_ARGS(&route->header_.uuid)); return NULL; } - - /* Verify that ip_prefix and nexthop have same address familiy. */ - if (valid_nexthop) { - if (IN6_IS_ADDR_V4MAPPED(&prefix) != IN6_IS_ADDR_V4MAPPED(&nexthop)) { - static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1); - VLOG_WARN_RL(&rl, "Address family doesn't match between 'ip_prefix'" - " %s and 'nexthop' %s in static route "UUID_FMT, - route->ip_prefix, route->nexthop, - UUID_ARGS(&route->header_.uuid)); - return NULL; - } - } + is_ipv4_prefix = IN6_IS_ADDR_V4MAPPED(&prefix); /* Verify that ip_prefix and nexthop are on the same network. */ if (!is_discard_route && @@ -10302,6 +10296,8 @@ parsed_routes_add(struct ovn_datapath *od, const struct hmap *lr_ports, pr->ecmp_symmetric_reply = smap_get_bool(&route->options, "ecmp_symmetric_reply", false); pr->is_discard_route = is_discard_route; + pr->is_ipv4_prefix = is_ipv4_prefix; + pr->is_ipv4_nexthop = is_ipv4_nexthop; ovs_list_insert(routes, &pr->list_node); return pr; } @@ -10677,7 +10673,7 @@ build_ecmp_route_flow(struct lflow_table *lflows, struct ovn_datapath *od, struct lflow_ref *lflow_ref) { - bool is_ipv4 = IN6_IS_ADDR_V4MAPPED(&eg->prefix); + bool is_ipv4_prefix = IN6_IS_ADDR_V4MAPPED(&eg->prefix); uint16_t priority; struct ecmp_route_list_node *er; struct ds route_match = DS_EMPTY_INITIALIZER; @@ -10686,7 +10682,8 @@ build_ecmp_route_flow(struct lflow_table *lflows, struct ovn_datapath *od, int ofs = !strcmp(eg->origin, ROUTE_ORIGIN_CONNECTED) ? ROUTE_PRIO_OFFSET_CONNECTED: ROUTE_PRIO_OFFSET_STATIC; build_route_match(NULL, eg->route_table_id, prefix_s, eg->plen, - eg->is_src_route, is_ipv4, &route_match, &priority, ofs); + eg->is_src_route, is_ipv4_prefix, &route_match, + &priority, ofs); free(prefix_s); struct ds actions = DS_EMPTY_INITIALIZER; @@ -10719,7 +10716,8 @@ build_ecmp_route_flow(struct lflow_table *lflows, struct ovn_datapath *od, /* Find the outgoing port. */ const char *lrp_addr_s = NULL; struct ovn_port *out_port = NULL; - if (!find_static_route_outport(od, lr_ports, route, is_ipv4, + if (!find_static_route_outport(od, lr_ports, route, + route_->is_ipv4_nexthop, &lrp_addr_s, &out_port)) { continue; } @@ -10744,9 +10742,10 @@ build_ecmp_route_flow(struct lflow_table *lflows, struct ovn_datapath *od, "eth.src = %s; " "outport = %s; " "next;", - is_ipv4 ? REG_NEXT_HOP_IPV4 : REG_NEXT_HOP_IPV6, + route_->is_ipv4_nexthop ? + REG_NEXT_HOP_IPV4 : REG_NEXT_HOP_IPV6, route->nexthop, - is_ipv4 ? REG_SRC_IPV4 : REG_SRC_IPV6, + route_->is_ipv4_nexthop ? REG_SRC_IPV4 : REG_SRC_IPV6, lrp_addr_s, out_port->lrp_networks.ea_s, out_port->json_key); @@ -10766,15 +10765,15 @@ add_route(struct lflow_table *lflows, struct ovn_datapath *od, const char *network_s, int plen, const char *gateway, bool is_src_route, const uint32_t rtb_id, const struct ovsdb_idl_row *stage_hint, bool is_discard_route, - int ofs, struct lflow_ref *lflow_ref) + int ofs, struct lflow_ref *lflow_ref, + bool is_ipv4_prefix, bool is_ipv4_nexthop) { - bool is_ipv4 = strchr(network_s, '.') ? true : false; struct ds match = DS_EMPTY_INITIALIZER; uint16_t priority; const struct ovn_port *op_inport = NULL; /* IPv6 link-local addresses must be scoped to the local router port. */ - if (!is_ipv4) { + if (!is_ipv4_prefix) { struct in6_addr network; ovs_assert(ipv6_parse(network_s, &network)); if (in6_is_lla(&network)) { @@ -10782,7 +10781,7 @@ add_route(struct lflow_table *lflows, struct ovn_datapath *od, } } build_route_match(op_inport, rtb_id, network_s, plen, is_src_route, - is_ipv4, &match, &priority, ofs); + is_ipv4_prefix, &match, &priority, ofs); struct ds common_actions = DS_EMPTY_INITIALIZER; struct ds actions = DS_EMPTY_INITIALIZER; @@ -10790,11 +10789,12 @@ add_route(struct lflow_table *lflows, struct ovn_datapath *od, ds_put_cstr(&actions, debug_drop_action()); } else { ds_put_format(&common_actions, REG_ECMP_GROUP_ID" = 0; %s = ", - is_ipv4 ? REG_NEXT_HOP_IPV4 : REG_NEXT_HOP_IPV6); + is_ipv4_nexthop ? REG_NEXT_HOP_IPV4 : REG_NEXT_HOP_IPV6); if (gateway && gateway[0]) { ds_put_cstr(&common_actions, gateway); } else { - ds_put_format(&common_actions, "ip%s.dst", is_ipv4 ? "4" : "6"); + ds_put_format(&common_actions, "ip%s.dst", + is_ipv4_prefix ? "4" : "6"); } ds_put_format(&common_actions, "; " "%s = %s; " @@ -10802,7 +10802,7 @@ add_route(struct lflow_table *lflows, struct ovn_datapath *od, "outport = %s; " "flags.loopback = 1; " "next;", - is_ipv4 ? REG_SRC_IPV4 : REG_SRC_IPV6, + is_ipv4_nexthop ? REG_SRC_IPV4 : REG_SRC_IPV6, lrp_addr_s, op->lrp_networks.ea_s, op->json_key); @@ -10854,7 +10854,8 @@ build_static_route_flow(struct lflow_table *lflows, struct ovn_datapath *od, add_route(lflows, route_->is_discard_route ? od : out_port->od, out_port, lrp_addr_s, prefix_s, route_->plen, route->nexthop, route_->is_src_route, route_->route_table_id, &route->header_, - route_->is_discard_route, ofs, lflow_ref); + route_->is_discard_route, ofs, lflow_ref, + route_->is_ipv4_prefix, route_->is_ipv4_nexthop); free(prefix_s); } @@ -12576,7 +12577,7 @@ build_ip_routing_flows_for_lrp( op->lrp_networks.ipv4_addrs[i].network_s, op->lrp_networks.ipv4_addrs[i].plen, NULL, false, 0, &op->nbrp->header_, false, ROUTE_PRIO_OFFSET_CONNECTED, - lflow_ref); + lflow_ref, true, true); } for (int i = 0; i < op->lrp_networks.n_ipv6_addrs; i++) { @@ -12584,7 +12585,7 @@ build_ip_routing_flows_for_lrp( op->lrp_networks.ipv6_addrs[i].network_s, op->lrp_networks.ipv6_addrs[i].plen, NULL, false, 0, &op->nbrp->header_, false, ROUTE_PRIO_OFFSET_CONNECTED, - lflow_ref); + lflow_ref, false, false); } } @@ -15361,7 +15362,7 @@ build_routable_flows_for_router_port( laddrs->ipv4_addrs[k].plen, NULL, false, 0, &router_port->nbrp->header_, false, ROUTE_PRIO_OFFSET_CONNECTED, - lrp->stateful_lflow_ref); + lrp->stateful_lflow_ref, true, true); } } } diff --git a/tests/ovn-nbctl.at b/tests/ovn-nbctl.at index 5248e6c76..4a219ab61 100644 --- a/tests/ovn-nbctl.at +++ b/tests/ovn-nbctl.at @@ -1757,7 +1757,7 @@ AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.0.1/24 11.0.0.2]) AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.10.0/24 lp0]) AT_CHECK([ovn-nbctl --bfd lr-route-add lr0 10.0.20.0/24 11.0.2.1 lp0]) AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.10.0/24 lp1], [1], [], - [ovn-nbctl: bad IPv4 nexthop argument: lp1 + [ovn-nbctl: bad nexthop argument: lp1 ]) dnl Add overlapping route with 10.0.0.1/24 @@ -1771,13 +1771,13 @@ AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.0.111/24a 11.0.0.1], [1], [], [ovn-nbctl: bad prefix argument: 10.0.0.111/24a ]) AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.0.111/24 11.0.0.1a], [1], [], - [ovn-nbctl: bad IPv4 nexthop argument: 11.0.0.1a + [ovn-nbctl: bad nexthop argument: 11.0.0.1a ]) AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.0.111/24 11.0.0.1/24], [1], [], - [ovn-nbctl: bad IPv4 nexthop argument: 11.0.0.1/24 + [ovn-nbctl: bad nexthop argument: 11.0.0.1/24 ]) AT_CHECK([ovn-nbctl lr-route-add lr0 2001:0db8:1::/64 2001:0db8:0:f103::1/64], [1], [], - [ovn-nbctl: bad IPv6 nexthop argument: 2001:0db8:0:f103::1/64 + [ovn-nbctl: bad nexthop argument: 2001:0db8:0:f103::1/64 ]) AT_CHECK([ovn-nbctl --ecmp lr-route-add lr0 20.0.0.0/24 discard], [1], [], [ovn-nbctl: ecmp is not valid for discard routes. @@ -2005,6 +2005,24 @@ check ovn-nbctl lr-route-del lr0 AT_CHECK([ovn-nbctl lr-route-list lr0], [0], [dnl ]) +dnl Check IPv4 over v6 and IPv6 over v4 routes +AT_CHECK([ovn-nbctl lr-route-add lr0 10.0.0.1/24 2001:0db8:0:f103::10]) +AT_CHECK([ovn-nbctl lr-route-add lr0 2001:0db8:0::/64 11.0.1.10]) + +AT_CHECK([ovn-nbctl lr-route-list lr0], [0], [dnl +IPv4 Routes +Route Table
: + 10.0.0.0/24 2001:db8:0:f103::10 dst-ip + +IPv6 Routes +Route Table
: + 2001:db8::/64 11.0.1.10 dst-ip +]) + +check ovn-nbctl lr-route-del lr0 +AT_CHECK([ovn-nbctl lr-route-list lr0], [0], [dnl +]) + dnl Check IPv4 routes in route table check ovn-nbctl --route-table=rtb-1 lr-route-add lr0 0.0.0.0/0 192.168.0.1 check ovn-nbctl --route-table=rtb-1 lr-route-add lr0 10.0.1.1/24 11.0.1.1 lp0 diff --git a/tests/ovn.at b/tests/ovn.at index dc6aafd53..bf7d5ef4b 100644 --- a/tests/ovn.at +++ b/tests/ovn.at @@ -37772,3 +37772,514 @@ OVS_WAIT_FOR_OUTPUT([as hv1 ovs-ofctl dump-flows br-int table=0 |grep priority=1 OVN_CLEANUP([hv1]) AT_CLEANUP ]) + +OVN_FOR_EACH_NORTHD([ +AT_SETUP([2 HVs, 2 LS, 1 lport/LS, 2 peer LRs, IPv4 over IPv6]) +AT_SKIP_IF([test $HAVE_SCAPY = no]) +ovn_start + +# Logical network: +# Two LRs - R1 and R2 that are connected to each other as peers in 2001:db8::/64 +# network. R1 has a switchs ls1 (192.168.1.0/24) connected to it. +# R2 has ls2 (172.16.1.0/24) connected to it. + +ls1_lp1_mac="f0:00:00:01:02:03" +rp_ls1_mac="00:00:00:01:02:03" +rp_ls2_mac="00:00:00:01:02:04" +ls2_lp1_mac="f0:00:00:01:02:04" + +ls1_lp1_ip="192.168.1.2" +ls2_lp1_ip="172.16.1.2" + +check ovn-nbctl lr-add R1 +check ovn-nbctl lr-add R2 + +check ovn-nbctl ls-add ls1 +check ovn-nbctl ls-add ls2 + +# Connect ls1 to R1 +check ovn-nbctl lrp-add R1 ls1 $rp_ls1_mac 192.168.1.1/24 + +check ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 type=router \ + options:router-port=ls1 addresses=\"$rp_ls1_mac\" + +# Connect ls2 to R2 +check ovn-nbctl lrp-add R2 ls2 $rp_ls2_mac 172.16.1.1/24 + +check ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 type=router \ + options:router-port=ls2 addresses=\"$rp_ls2_mac\" + +# Connect R1 to R2 +check ovn-nbctl lrp-add R1 R1_R2 00:00:00:02:03:04 2001:db8::1/64 peer=R2_R1 +check ovn-nbctl lrp-add R2 R2_R1 00:00:00:02:03:05 2001:db8::2/64 peer=R1_R2 + +AT_CHECK([ovn-nbctl lr-route-add R1 "0.0.0.0/0" 2001:db8::2]) +AT_CHECK([ovn-nbctl lr-route-add R2 "0.0.0.0/0" 2001:db8::1]) + +# Create logical port ls1-lp1 in ls1 +check ovn-nbctl lsp-add ls1 ls1-lp1 \ +-- lsp-set-addresses ls1-lp1 "$ls1_lp1_mac $ls1_lp1_ip" + +# Create logical port ls2-lp1 in ls2 +check ovn-nbctl lsp-add ls2 ls2-lp1 \ +-- lsp-set-addresses ls2-lp1 "$ls2_lp1_mac $ls2_lp1_ip" + +# Create two hypervisor and create OVS ports corresponding to logical ports. +net_add n1 + +sim_add hv1 +as hv1 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.1 +check ovs-vsctl -- add-port br-int hv1-vif1 -- \ + set interface hv1-vif1 external-ids:iface-id=ls1-lp1 \ + options:tx_pcap=hv1/vif1-tx.pcap \ + options:rxq_pcap=hv1/vif1-rx.pcap \ + ofport-request=1 + +sim_add hv2 +as hv2 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.2 +check ovs-vsctl -- add-port br-int hv2-vif1 -- \ + set interface hv2-vif1 external-ids:iface-id=ls2-lp1 \ + options:tx_pcap=hv2/vif1-tx.pcap \ + options:rxq_pcap=hv2/vif1-rx.pcap \ + ofport-request=1 + + +# Pre-populate the hypervisors' ARP tables so that we don't lose any +# packets for ARP resolution (native tunneling doesn't queue packets +# for ARP resolution). +OVN_POPULATE_ARP + +# Allow some time for ovn-northd and ovn-controller to catch up. +wait_for_ports_up +check ovn-nbctl --wait=hv sync + +# Packet to send. +packet=$(fmt_pkt "Ether(dst='${rp_ls1_mac}', src='${ls1_lp1_mac}')/ \ + IP(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', ttl=64)/ \ + UDP(sport=53, dport=4369)") +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# Packet to Expect +# The TTL should be decremented by 2. +expected=$(fmt_pkt "Ether(dst='${ls2_lp1_mac}', src='${rp_ls2_mac}')/ \ + IP(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', ttl=62)/ \ + UDP(sport=53, dport=4369)") +echo ${expected} > expected +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "reg0 == 172.16.1.2" | wc -l], [0], [1 +]) + +# Disable the ls2-lp1 port. +check ovn-nbctl --wait=hv set logical_switch_port ls2-lp1 enabled=false + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "reg0 == 172.16.1.2" | wc -l], [0], [0 +]) + +# Send the same packet again and it should not be delivered +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# The 2nd packet sent shound not be received. +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +OVN_CLEANUP([hv1],[hv2]) + +AT_CLEANUP +]) + +OVN_FOR_EACH_NORTHD([ +AT_SETUP([2 HVs, 2 LS, 1 lport/LS, LRs connected via LS, IPv4 over IPv6]) +AT_SKIP_IF([test $HAVE_SCAPY = no]) +ovn_start + +# Logical network: +# Two LRs - R1 and R2 that are connected to ls-transfer in 2001:db8::/64 +# network. R1 has a switchs ls1 (192.168.1.0/24) connected to it. +# R2 has ls2 (172.16.1.0/24) connected to it. + +ls1_lp1_mac="f0:00:00:01:02:03" +rp_ls1_mac="00:00:00:01:02:03" +rp_ls2_mac="00:00:00:01:02:04" +ls2_lp1_mac="f0:00:00:01:02:04" + +ls1_lp1_ip="192.168.1.2" +ls2_lp1_ip="172.16.1.2" + +check ovn-nbctl lr-add R1 +check ovn-nbctl lr-add R2 + +check ovn-nbctl ls-add ls1 +check ovn-nbctl ls-add ls2 +check ovn-nbctl ls-add ls-transfer + +# Connect ls1 to R1 +check ovn-nbctl lrp-add R1 ls1 $rp_ls1_mac 192.168.1.1/24 + +check ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 type=router \ + options:router-port=ls1 addresses=\"$rp_ls1_mac\" + +# Connect ls2 to R2 +check ovn-nbctl lrp-add R2 ls2 $rp_ls2_mac 172.16.1.1/24 + +check ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 type=router \ + options:router-port=ls2 addresses=\"$rp_ls2_mac\" + +# Connect R1 to R2 +check ovn-nbctl lrp-add R1 R1_ls-transfer 00:00:00:02:03:04 2001:db8::1/64 +check ovn-nbctl lrp-add R2 R2_ls-transfer 00:00:00:02:03:05 2001:db8::2/64 + +check ovn-nbctl lsp-add ls-transfer ls-transfer_r1 -- \ + set Logical_Switch_Port ls-transfer_r1 type=router \ + options:router-port=R1_ls-transfer addresses=\"router\" +check ovn-nbctl lsp-add ls-transfer ls-transfer_r2 -- \ + set Logical_Switch_Port ls-transfer_r2 type=router \ + options:router-port=R2_ls-transfer addresses=\"router\" + +AT_CHECK([ovn-nbctl lr-route-add R1 "0.0.0.0/0" 2001:db8::2]) +AT_CHECK([ovn-nbctl lr-route-add R2 "0.0.0.0/0" 2001:db8::1]) + +# Create logical port ls1-lp1 in ls1 +check ovn-nbctl lsp-add ls1 ls1-lp1 \ +-- lsp-set-addresses ls1-lp1 "$ls1_lp1_mac $ls1_lp1_ip" + +# Create logical port ls2-lp1 in ls2 +check ovn-nbctl lsp-add ls2 ls2-lp1 \ +-- lsp-set-addresses ls2-lp1 "$ls2_lp1_mac $ls2_lp1_ip" + +# Create two hypervisor and create OVS ports corresponding to logical ports. +net_add n1 + +sim_add hv1 +as hv1 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.1 +check ovs-vsctl -- add-port br-int hv1-vif1 -- \ + set interface hv1-vif1 external-ids:iface-id=ls1-lp1 \ + options:tx_pcap=hv1/vif1-tx.pcap \ + options:rxq_pcap=hv1/vif1-rx.pcap \ + ofport-request=1 + +sim_add hv2 +as hv2 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.2 +check ovs-vsctl -- add-port br-int hv2-vif1 -- \ + set interface hv2-vif1 external-ids:iface-id=ls2-lp1 \ + options:tx_pcap=hv2/vif1-tx.pcap \ + options:rxq_pcap=hv2/vif1-rx.pcap \ + ofport-request=1 + + +# Pre-populate the hypervisors' ARP tables so that we don't lose any +# packets for ARP resolution (native tunneling doesn't queue packets +# for ARP resolution). +OVN_POPULATE_ARP + +# Allow some time for ovn-northd and ovn-controller to catch up. +wait_for_ports_up +check ovn-nbctl --wait=hv sync + +# Packet to send. +packet=$(fmt_pkt "Ether(dst='${rp_ls1_mac}', src='${ls1_lp1_mac}')/ \ + IP(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', ttl=64)/ \ + UDP(sport=53, dport=4369)") +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# Packet to Expect +# The TTL should be decremented by 2. +expected=$(fmt_pkt "Ether(dst='${ls2_lp1_mac}', src='${rp_ls2_mac}')/ \ + IP(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', ttl=62)/ \ + UDP(sport=53, dport=4369)") +echo ${expected} > expected +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "reg0 == 172.16.1.2" | wc -l], [0], [1 +]) + +# Disable the ls2-lp1 port. +check ovn-nbctl --wait=hv set logical_switch_port ls2-lp1 enabled=false + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "reg0 == 172.16.1.2" | wc -l], [0], [0 +]) + +# Send the same packet again and it should not be delivered +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# The 2nd packet sent shound not be received. +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +OVN_CLEANUP([hv1],[hv2]) + +AT_CLEANUP +]) + +OVN_FOR_EACH_NORTHD([ +AT_SETUP([2 HVs, 2 LS, 1 lport/LS, LRs connected via LS, IPv4 over IPv6, ECMP]) +AT_SKIP_IF([test $HAVE_SCAPY = no]) +ovn_start + +# Logical network: +# Two LRs - R1 and R2 that are connected to ls-transfer1 and lr-transfer2 in +# 2001:db8:1::/64 and 2001:db8:2::/64 +# network. R1 has a switchs ls1 (192.168.1.0/24) connected to it. +# R2 has ls2 (172.16.1.0/24) connected to it. + +ls1_lp1_mac="f0:00:00:01:02:03" +rp_ls1_mac="00:00:00:01:02:03" +rp_ls2_mac="00:00:00:01:02:04" +ls2_lp1_mac="f0:00:00:01:02:04" + +ls1_lp1_ip="192.168.1.2" +ls2_lp1_ip="172.16.1.2" + +check ovn-nbctl lr-add R1 +check ovn-nbctl lr-add R2 + +check ovn-nbctl ls-add ls1 +check ovn-nbctl ls-add ls2 +check ovn-nbctl ls-add ls-transfer1 +check ovn-nbctl ls-add ls-transfer2 + +# Connect ls1 to R1 +check ovn-nbctl lrp-add R1 ls1 $rp_ls1_mac 192.168.1.1/24 + +check ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 type=router \ + options:router-port=ls1 addresses=\"$rp_ls1_mac\" + +# Connect ls2 to R2 +check ovn-nbctl lrp-add R2 ls2 $rp_ls2_mac 172.16.1.1/24 + +check ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 type=router \ + options:router-port=ls2 addresses=\"$rp_ls2_mac\" + +# Connect R1 to R2 (ls-transfer1) +check ovn-nbctl lrp-add R1 R1_ls-transfer1 00:00:00:02:03:04 2001:db8:1::1/64 +check ovn-nbctl lrp-add R2 R2_ls-transfer1 00:00:00:02:03:05 2001:db8:1::2/64 + +check ovn-nbctl lsp-add ls-transfer1 ls-transfer1_r1 -- \ + set Logical_Switch_Port ls-transfer1_r1 type=router \ + options:router-port=R1_ls-transfer1 addresses=\"router\" +check ovn-nbctl lsp-add ls-transfer1 ls-transfer1_r2 -- \ + set Logical_Switch_Port ls-transfer1_r2 type=router \ + options:router-port=R2_ls-transfer1 addresses=\"router\" + +# Connect R1 to R2 (ls-transfer2) +check ovn-nbctl lrp-add R1 R1_ls-transfer2 00:00:00:02:03:14 2001:db8:2::1/64 +check ovn-nbctl lrp-add R2 R2_ls-transfer2 00:00:00:02:03:15 2001:db8:2::2/64 + +check ovn-nbctl lsp-add ls-transfer2 ls-transfer2_r1 -- \ + set Logical_Switch_Port ls-transfer2_r1 type=router \ + options:router-port=R1_ls-transfer2 addresses=\"router\" +check ovn-nbctl lsp-add ls-transfer2 ls-transfer2_r2 -- \ + set Logical_Switch_Port ls-transfer2_r2 type=router \ + options:router-port=R2_ls-transfer2 addresses=\"router\" + +AT_CHECK([ovn-nbctl lr-route-add R1 "0.0.0.0/0" 2001:db8:1::2]) +AT_CHECK([ovn-nbctl --ecmp lr-route-add R1 "0.0.0.0/0" 2001:db8:2::2]) +AT_CHECK([ovn-nbctl lr-route-add R2 "0.0.0.0/0" 2001:db8:1::1]) +AT_CHECK([ovn-nbctl --ecmp lr-route-add R2 "0.0.0.0/0" 2001:db8:2::1]) + +# Create logical port ls1-lp1 in ls1 +check ovn-nbctl lsp-add ls1 ls1-lp1 \ +-- lsp-set-addresses ls1-lp1 "$ls1_lp1_mac $ls1_lp1_ip" + +# Create logical port ls2-lp1 in ls2 +check ovn-nbctl lsp-add ls2 ls2-lp1 \ +-- lsp-set-addresses ls2-lp1 "$ls2_lp1_mac $ls2_lp1_ip" + +# Create two hypervisor and create OVS ports corresponding to logical ports. +net_add n1 + +sim_add hv1 +as hv1 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.1 +check ovs-vsctl -- add-port br-int hv1-vif1 -- \ + set interface hv1-vif1 external-ids:iface-id=ls1-lp1 \ + options:tx_pcap=hv1/vif1-tx.pcap \ + options:rxq_pcap=hv1/vif1-rx.pcap \ + ofport-request=1 + +sim_add hv2 +as hv2 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.2 +check ovs-vsctl -- add-port br-int hv2-vif1 -- \ + set interface hv2-vif1 external-ids:iface-id=ls2-lp1 \ + options:tx_pcap=hv2/vif1-tx.pcap \ + options:rxq_pcap=hv2/vif1-rx.pcap \ + ofport-request=1 + + +# Pre-populate the hypervisors' ARP tables so that we don't lose any +# packets for ARP resolution (native tunneling doesn't queue packets +# for ARP resolution). +OVN_POPULATE_ARP + +# Allow some time for ovn-northd and ovn-controller to catch up. +wait_for_ports_up +check ovn-nbctl --wait=hv sync + +# Packet to send. +packet=$(fmt_pkt "Ether(dst='${rp_ls1_mac}', src='${ls1_lp1_mac}')/ \ + IP(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', ttl=64)/ \ + UDP(sport=53, dport=4369)") +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# Packet to Expect +# The TTL should be decremented by 2. +expected=$(fmt_pkt "Ether(dst='${ls2_lp1_mac}', src='${rp_ls2_mac}')/ \ + IP(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', ttl=62)/ \ + UDP(sport=53, dport=4369)") +echo ${expected} > expected +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "reg0 == 172.16.1.2" | wc -l], [0], [1 +]) + +# Disable the ls2-lp1 port. +check ovn-nbctl --wait=hv set logical_switch_port ls2-lp1 enabled=false + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "reg0 == 172.16.1.2" | wc -l], [0], [0 +]) + +# Send the same packet again and it should not be delivered +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# The 2nd packet sent shound not be received. +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +OVN_CLEANUP([hv1],[hv2]) + +AT_CLEANUP +]) + +OVN_FOR_EACH_NORTHD([ +AT_SETUP([2 HVs, 2 LS, 1 lport/LS, 2 peer LRs, IPv6 over IPv4]) +AT_SKIP_IF([test $HAVE_SCAPY = no]) +ovn_start + +# Logical network: +# Two LRs - R1 and R2 that are connected to each other as peers in 10.0.0.0/24 +# network. R1 has a switchs ls1 (2001:db8:1::/64) connected to it. +# R2 has ls2 (2001:db8:2::/64) connected to it. + +ls1_lp1_mac="f0:00:00:01:02:03" +rp_ls1_mac="00:00:00:01:02:03" +rp_ls2_mac="00:00:00:01:02:04" +ls2_lp1_mac="f0:00:00:01:02:04" + +ls1_lp1_ip="2001:db8:1::2" +ls2_lp1_ip="2001:db8:2::2" + +check ovn-nbctl lr-add R1 +check ovn-nbctl lr-add R2 + +check ovn-nbctl ls-add ls1 +check ovn-nbctl ls-add ls2 + +# Connect ls1 to R1 +check ovn-nbctl lrp-add R1 ls1 $rp_ls1_mac 2001:db8:1::1/64 + +check ovn-nbctl lsp-add ls1 rp-ls1 -- set Logical_Switch_Port rp-ls1 type=router \ + options:router-port=ls1 addresses=\"$rp_ls1_mac\" + +# Connect ls2 to R2 +check ovn-nbctl lrp-add R2 ls2 $rp_ls2_mac 2001:db8:2::1/64 + +check ovn-nbctl lsp-add ls2 rp-ls2 -- set Logical_Switch_Port rp-ls2 type=router \ + options:router-port=ls2 addresses=\"$rp_ls2_mac\" + +# Connect R1 to R2 +check ovn-nbctl lrp-add R1 R1_R2 00:00:00:02:03:04 10.0.0.1/24 peer=R2_R1 +check ovn-nbctl lrp-add R2 R2_R1 00:00:00:02:03:05 10.0.0.2/24 peer=R1_R2 + +AT_CHECK([ovn-nbctl lr-route-add R1 "::/0" 10.0.0.2]) +AT_CHECK([ovn-nbctl lr-route-add R2 "::/0" 10.0.0.1]) + +# Create logical port ls1-lp1 in ls1 +check ovn-nbctl lsp-add ls1 ls1-lp1 \ +-- lsp-set-addresses ls1-lp1 "$ls1_lp1_mac $ls1_lp1_ip" + +# Create logical port ls2-lp1 in ls2 +check ovn-nbctl lsp-add ls2 ls2-lp1 \ +-- lsp-set-addresses ls2-lp1 "$ls2_lp1_mac $ls2_lp1_ip" + +# Create two hypervisor and create OVS ports corresponding to logical ports. +net_add n1 + +sim_add hv1 +as hv1 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.1 +check ovs-vsctl -- add-port br-int hv1-vif1 -- \ + set interface hv1-vif1 external-ids:iface-id=ls1-lp1 \ + options:tx_pcap=hv1/vif1-tx.pcap \ + options:rxq_pcap=hv1/vif1-rx.pcap \ + ofport-request=1 + +sim_add hv2 +as hv2 +check ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.2 +check ovs-vsctl -- add-port br-int hv2-vif1 -- \ + set interface hv2-vif1 external-ids:iface-id=ls2-lp1 \ + options:tx_pcap=hv2/vif1-tx.pcap \ + options:rxq_pcap=hv2/vif1-rx.pcap \ + ofport-request=1 + + +# Pre-populate the hypervisors' ARP tables so that we don't lose any +# packets for ARP resolution (native tunneling doesn't queue packets +# for ARP resolution). +OVN_POPULATE_ARP + +# Allow some time for ovn-northd and ovn-controller to catch up. +wait_for_ports_up +check ovn-nbctl --wait=hv sync + +# Packet to send. +packet=$(fmt_pkt "Ether(dst='${rp_ls1_mac}', src='${ls1_lp1_mac}')/ \ + IPv6(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', hlim=64)/ \ + UDP(sport=53, dport=4369)") +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# Packet to Expect +# The TTL should be decremented by 2. +expected=$(fmt_pkt "Ether(dst='${ls2_lp1_mac}', src='${rp_ls2_mac}')/ \ + IPv6(src='${ls1_lp1_ip}', dst='${ls2_lp1_ip}', hlim=62)/ \ + UDP(sport=53, dport=4369)") +echo ${expected} > expected +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "xxreg0 == 2001:db8:2::2" | wc -l], [0], [1 +]) + +# Disable the ls2-lp1 port. +check ovn-nbctl --wait=hv set logical_switch_port ls2-lp1 enabled=false + +AT_CHECK([ovn-sbctl dump-flows | grep lr_in_arp_resolve | \ +grep "xxreg0 == 2001:db8:2::2" | wc -l], [0], [0 +]) + +# Send the same packet again and it should not be delivered +check as hv1 ovs-appctl netdev-dummy/receive hv1-vif1 "$packet" + +# The 2nd packet sent shound not be received. +OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected]) + +OVN_CLEANUP([hv1],[hv2]) + +AT_CLEANUP +]) diff --git a/utilities/ovn-nbctl.c b/utilities/ovn-nbctl.c index 25eb86f7f..f827b2ad9 100644 --- a/utilities/ovn-nbctl.c +++ b/utilities/ovn-nbctl.c @@ -4546,11 +4546,9 @@ nbctl_lr_route_add(struct ctl_context *ctx) } char *route_table = shash_find_data(&ctx->options, "--route-table"); - bool v6_prefix = false; prefix = normalize_ipv4_prefix_str(ctx->argv[2]); if (!prefix) { prefix = normalize_ipv6_prefix_str(ctx->argv[2]); - v6_prefix = true; } if (!prefix) { ctl_error(ctx, "bad prefix argument: %s", ctx->argv[2]); @@ -4561,15 +4559,15 @@ nbctl_lr_route_add(struct ctl_context *ctx) if (is_discard_route) { next_hop = xasprintf("discard"); } else { - next_hop = v6_prefix - ? normalize_ipv6_addr_str(ctx->argv[3]) - : normalize_ipv4_addr_str(ctx->argv[3]); + next_hop = normalize_ipv4_addr_str(ctx->argv[3]); + if (!next_hop) { + next_hop = normalize_ipv6_addr_str(ctx->argv[3]); + } if (!next_hop) { /* check if it is a output port. */ error = lrp_by_name_or_uuid(ctx, ctx->argv[3], true, &out_lrp); if (error) { - ctl_error(ctx, "bad %s nexthop argument: %s", - v6_prefix ? "IPv6" : "IPv4", ctx->argv[3]); + ctl_error(ctx, "bad nexthop argument: %s", ctx->argv[3]); free(error); goto cleanup; }