Introduce logical flows in ovn router pipeline in order to parse dhcpv6 advertise/reply from IPv6 prefix delegation router. Do not overwrite ipv6_ra_pd_list info in options column of SB port_binding table written by ovn-controller Introduce ipv6_prefix column in NB Logical_router_port table to report IPv6 prefix received from delegation router to the CMS
Signed-off-by: Lorenzo Bianconi <lorenzo.bianc...@redhat.com> --- northd/ovn-northd.8.xml | 8 +++ northd/ovn-northd.c | 95 ++++++++++++++++++++++++++++-- ovn-nb.ovsschema | 7 ++- ovn-nb.xml | 21 +++++++ tests/atlocal.in | 5 +- tests/system-ovn.at | 127 ++++++++++++++++++++++++++++++++++++++++ 6 files changed, 255 insertions(+), 8 deletions(-) diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml index 9b44720d1..a674798a5 100644 --- a/northd/ovn-northd.8.xml +++ b/northd/ovn-northd.8.xml @@ -1658,6 +1658,14 @@ next; </ul> </li> + <li> + A priority-100 flow parses DHCPv6 replies from IPv6 prefix + delegation routers (<code>udp.src == 547 && + udp.dst == 546</code>). The <code>handle_dhcpv6_reply</code> + is used to send IPv6 prefix delegation messages to the delegation + router. + </li> + <li> <p> A priority-87 flow explicitly allows IPv6 multicast traffic that is diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c index 4f94680b5..96101bc29 100644 --- a/northd/ovn-northd.c +++ b/northd/ovn-northd.c @@ -2689,6 +2689,33 @@ op_get_name(const struct ovn_port *op) return name; } +static void +ovn_update_ipv6_prefix(struct hmap *ports) +{ + const struct ovn_port *op; + HMAP_FOR_EACH (op, key_node, ports) { + if (!op->nbrp) { + continue; + } + + char prefix[IPV6_SCAN_LEN + 6]; + unsigned aid; + const char *ipv6_pd_list = smap_get(&op->sb->options, + "ipv6_ra_pd_list"); + if (!ipv6_pd_list || + !ovs_scan(ipv6_pd_list, "%u:%s", &aid, prefix)) { + continue; + } + + struct sset ipv6_prefix_set = SSET_INITIALIZER(&ipv6_prefix_set); + sset_add(&ipv6_prefix_set, prefix); + nbrec_logical_router_port_set_ipv6_prefix(op->nbrp, + sset_array(&ipv6_prefix_set), + sset_count(&ipv6_prefix_set)); + sset_destroy(&ipv6_prefix_set); + } +} + static void ovn_port_update_sbrec(struct northd_context *ctx, struct ovsdb_idl_index *sbrec_chassis_by_name, @@ -2819,6 +2846,13 @@ ovn_port_update_sbrec(struct northd_context *ctx, smap_add(&new, "l3gateway-chassis", chassis_name); } } + + const char *ipv6_pd_list = smap_get(&op->sb->options, + "ipv6_ra_pd_list"); + if (ipv6_pd_list) { + smap_add(&new, "ipv6_ra_pd_list", ipv6_pd_list); + } + sbrec_port_binding_set_options(op->sb, &new); smap_destroy(&new); @@ -4673,12 +4707,12 @@ build_pre_acls(struct ovn_datapath *od, struct hmap *lflows) * unreachable packets. */ ovn_lflow_add(lflows, od, S_SWITCH_IN_PRE_ACL, 110, "nd || nd_rs || nd_ra || icmp4.type == 3 || " - "icmp6.type == 1 || (tcp && tcp.flags == 20)", - "next;"); + "icmp6.type == 1 || (tcp && tcp.flags == 20) || " + "(udp && udp.src == 546 && udp.dst == 547)", "next;"); ovn_lflow_add(lflows, od, S_SWITCH_OUT_PRE_ACL, 110, "nd || nd_rs || nd_ra || icmp4.type == 3 || " - "icmp6.type == 1 || (tcp && tcp.flags == 20)", - "next;"); + "icmp6.type == 1 || (tcp && tcp.flags == 20) ||" + "(udp && udp.src == 546 && udp.dst == 547)", "next;"); /* Ingress and Egress Pre-ACL Table (Priority 100). * @@ -7702,6 +7736,11 @@ copy_ra_to_sb(struct ovn_port *op, const char *address_mode) } ds_put_format(&s, "%s/%u ", addrs->network_s, addrs->plen); } + + const char *ra_pd_list = smap_get(&op->sb->options, "ipv6_ra_pd_list"); + if (ra_pd_list) { + ds_put_cstr(&s, ra_pd_list); + } /* Remove trailing space */ ds_chomp(&s, ' '); smap_add(&options, "ipv6_ra_prefixes", ds_cstr(&s)); @@ -8446,7 +8485,34 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap *ports, free(snat_ips); } - /* Logical router ingress table 3: IP Input for IPv6. */ + /* DHCPv6 reply handling */ + HMAP_FOR_EACH (op, key_node, ports) { + if (!op->nbrp) { + continue; + } + + if (op->derived) { + continue; + } + + struct lport_addresses lrp_networks; + if (!extract_lrp_networks(op->nbrp, &lrp_networks)) { + continue; + } + + for (size_t i = 0; i < lrp_networks.n_ipv6_addrs; i++) { + ds_clear(&actions); + ds_clear(&match); + ds_put_format(&match, "ip6.dst == %s && udp.src == 547 &&" + " udp.dst == 546", + lrp_networks.ipv6_addrs[i].addr_s); + ds_put_format(&actions, "reg0 = 0; handle_dhcpv6_reply;"); + ovn_lflow_add(lflows, op->od, S_ROUTER_IN_IP_INPUT, 100, + ds_cstr(&match), ds_cstr(&actions)); + } + } + + /* Logical router ingress table 1: IP Input for IPv6. */ HMAP_FOR_EACH (op, key_node, ports) { if (!op->nbrp) { continue; @@ -9205,6 +9271,24 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap *ports, continue; } + struct smap options; + /* enable IPv6 prefix delegation */ + bool prefix_delegation = smap_get_bool(&op->nbrp->options, + "prefix_delegation", false); + if (prefix_delegation) { + smap_clone(&options, &op->sb->options); + smap_add(&options, "ipv6_prefix_delegation", "true"); + sbrec_port_binding_set_options(op->sb, &options); + smap_destroy(&options); + } + + if (smap_get_bool(&op->nbrp->options, "prefix", false)) { + smap_clone(&options, &op->sb->options); + smap_add(&options, "ipv6_prefix", "true"); + sbrec_port_binding_set_options(op->sb, &options); + smap_destroy(&options); + } + const char *address_mode = smap_get( &op->nbrp->ipv6_ra_configs, "address_mode"); @@ -10904,6 +10988,7 @@ ovnnb_db_run(struct northd_context *ctx, build_meter_groups(ctx, &meter_groups); build_lflows(ctx, datapaths, ports, &port_groups, &mcast_groups, &igmp_groups, &meter_groups, &lbs); + ovn_update_ipv6_prefix(ports); sync_address_sets(ctx); sync_port_groups(ctx); diff --git a/ovn-nb.ovsschema b/ovn-nb.ovsschema index 843e979db..76b93691c 100644 --- a/ovn-nb.ovsschema +++ b/ovn-nb.ovsschema @@ -1,7 +1,7 @@ { "name": "OVN_Northbound", - "version": "5.20.0", - "cksum": "2846067333 25243", + "version": "5.21.0", + "cksum": "1457743848 25409", "tables": { "NB_Global": { "columns": { @@ -342,6 +342,9 @@ "ipv6_ra_configs": { "type": {"key": "string", "value": "string", "min": 0, "max": "unlimited"}}, + "ipv6_prefix": {"type": {"key": "string", + "min": 0, + "max": "unlimited"}}, "external_ids": { "type": {"key": "string", "value": "string", "min": 0, "max": "unlimited"}}}, diff --git a/ovn-nb.xml b/ovn-nb.xml index d06ff00f0..f366e8073 100644 --- a/ovn-nb.xml +++ b/ovn-nb.xml @@ -2104,6 +2104,11 @@ </column> </group> + <column name="ipv6_prefix"> + This column contains IPv6 prefix obtained by prefix delegation + router according to RFC 3633 + </column> + <group title="ipv6_ra_configs"> <p> This column defines the IPv6 ND RA address mode and ND MTU Option to be @@ -2311,6 +2316,22 @@ <code>ovn-northd</code> honors the configured value. </column> + <column name="options" key="prefix_delegation" + type='{"type": "boolean"}'> + <p> + If set to <code>true</code>, enable IPv6 prefix delegation state + machine on this logical router port (RFC3633). IPv6 prefix + delegation is available just on a gateway router or on a gateway + router port. + </p> + </column> + + <column name="options" key="prefix" type='{"type": "boolean"}'> + <p> + If set to <code>true</code>, this interface will receive an IPv6 + prefix according to RFC3663 + </p> + </column> </group> <group title="Attachment"> diff --git a/tests/atlocal.in b/tests/atlocal.in index 5f14c3da0..8f3ff03b9 100644 --- a/tests/atlocal.in +++ b/tests/atlocal.in @@ -157,7 +157,7 @@ find_command() { which $1 > /dev/null 2>&1 status=$? - var=HAVE_`echo "$1" | tr '[a-z]' '[A-Z]'` + var=HAVE_`echo "$1" | tr '-' '_' | tr '[a-z]' '[A-Z]'` if test "$status" = "0"; then eval ${var}="yes" else @@ -192,6 +192,9 @@ else DIFF_SUPPORTS_NORMAL_FORMAT=no fi +# Set HAVE_DIBBLER-SERVER +find_command dibbler-server + # Turn off proxies. unset http_proxy unset https_proxy diff --git a/tests/system-ovn.at b/tests/system-ovn.at index 3b3379840..3b9d62117 100644 --- a/tests/system-ovn.at +++ b/tests/system-ovn.at @@ -3744,3 +3744,130 @@ OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d /connection dropped.*/d"]) AT_CLEANUP + +AT_SETUP([ovn -- IPv6 prefix delegation]) +AT_SKIP_IF([test $HAVE_DIBBLER_SERVER = no]) +AT_KEYWORDS([ovn-ipv6-prefix_d]) + +ovn_start +OVS_TRAFFIC_VSWITCHD_START() + +ADD_BR([br-int]) +ADD_BR([br-ext]) + +ovs-ofctl add-flow br-ext action=normal +# Set external-ids in br-int needed for ovn-controller +ovs-vsctl \ + -- set Open_vSwitch . external-ids:system-id=hv1 \ + -- set Open_vSwitch . external-ids:ovn-remote=unix:$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 + +ovn-nbctl lr-add R1 + +ovn-nbctl ls-add sw0 +ovn-nbctl ls-add sw1 +ovn-nbctl ls-add public + +ovn-nbctl lrp-add R1 rp-sw0 00:00:01:01:02:03 192.168.1.1/24 +ovn-nbctl lrp-add R1 rp-sw1 00:00:03:01:02:03 192.168.2.1/24 +ovn-nbctl lrp-add R1 rp-public 00:00:02:01:02:03 172.16.1.1/24 \ + -- set Logical_Router_Port rp-public options:redirect-chassis=hv1 + +ovn-nbctl lsp-add sw0 sw0-rp -- set Logical_Switch_Port sw0-rp \ + type=router options:router-port=rp-sw0 \ + -- lsp-set-addresses sw0-rp router +ovn-nbctl lsp-add sw1 sw1-rp -- set Logical_Switch_Port sw1-rp \ + type=router options:router-port=rp-sw1 \ + -- lsp-set-addresses sw1-rp router + +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 + +ADD_NAMESPACES(sw01) +ADD_VETH(sw01, sw01, br-int, "192.168.1.2/24", "f0:00:00:01:02:03", \ + "192.168.1.1") +ovn-nbctl lsp-add sw0 sw01 \ + -- lsp-set-addresses sw01 "f0:00:00:01:02:03 192.168.1.2" + +ADD_NAMESPACES(sw11) +ADD_VETH(sw11, sw11, br-int, "192.168.2.2/24", "f0:00:00:02:02:03", \ + "192.168.2.1") +ovn-nbctl lsp-add sw1 sw11 \ + -- lsp-set-addresses sw11 "f0:00:00:02:02:03 192.168.2.2" + +ADD_NAMESPACES(server) +ADD_VETH(s1, server, br-ext, "2001:db8:3333::2/64", "f0:00:00:01:02:05", \ + "2001:db8:3333::1") + +OVS_WAIT_UNTIL([test "$(ip netns exec server ip a | grep 2001:db8:3333::2 | grep tentative)" = ""]) +OVS_WAIT_UNTIL([test "$(ip netns exec server ip a | grep fe80 | grep tentative)" = ""]) + +AT_CHECK([ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phynet:br-ext]) +ovn-nbctl lsp-add public public1 \ + -- lsp-set-addresses public1 unknown \ + -- lsp-set-type public1 localnet \ + -- lsp-set-options public1 network_name=phynet + +ovn-nbctl set logical_router_port rp-public options:prefix_delegation=true +ovn-nbctl set logical_router_port rp-public options:prefix=true +ovn-nbctl set logical_router_port rp-sw0 options:prefix=true +ovn-nbctl set logical_router_port rp-sw1 options:prefix=true + +# reset dibbler state +sed s/eth0/s1/g -i /etc/dibbler/server.conf +cat > /var/lib/dibbler/server-AddrMgr.xml <<EOF +<AddrMgr> + <timestamp>1575481348</timestamp> + <replayDetection>0</replayDetection> +</AddrMgr> +EOF +cat > /var/lib/dibbler/server-CfgMgr.xml <<EOF +<SrvCfgMgr> + <workDir>/var/lib/dibbler</workDir> + <LogName>Server</LogName> + <LogLevel>8</LogLevel> + <InactiveMode>0</InactiveMode> + <GuessMode>0</GuessMode> +</SrvCfgMgr> +EOF + +NS_CHECK_EXEC([server], [dibbler-server run > dibbler.log &]) +ovn-nbctl --wait=hv sync + +sleep 10 +kill $(pidof dibbler-server) + +OVS_WAIT_UNTIL([ovn-nbctl list logical_router_port rp-public | grep ipv6_prefix]) +OVS_WAIT_UNTIL([ovn-nbctl list logical_router_port rp-sw0 | grep ipv6_prefix]) +OVS_WAIT_UNTIL([ovn-nbctl list logical_router_port rp-sw1 | grep ipv6_prefix]) +AT_CHECK([ovn-nbctl get logical_router_port rp-public ipv6_prefix | cut -c3-15], [0], [dnl +[2001:db8:3333] +]) +AT_CHECK([ovn-nbctl get logical_router_port rp-sw0 ipv6_prefix | cut -c3-15], [0], [dnl +[2001:db8:3333] +]) +AT_CHECK([ovn-nbctl get logical_router_port rp-sw1 ipv6_prefix | cut -c3-15], [0], [dnl +[2001:db8:3333] +]) + +kill $(pidof 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 -- 2.25.1 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev