Thanks for the suggestions! Not all Logical port has a real ofp_port connect with it. And bundle_load/bundle actions need real ovs port. Especially in ovn router port, all router port are virtual port which just a number/reg in our ovs-flows.
This implement of multipath can seperate ovn east-west traffic, it helps dispatch traffic to gateways and routers easily. For south-north traffic, we can have bundle/bundle_load action to consider the remote tunnel up/down status. I would like to make it step by step and implement it in my next series patches. Thanks Zhenyu Gao 2017-09-20 17:53 GMT+08:00 Miguel Angel Ajo Pelayo <[email protected]>: > I'm not very familiar with multipath implementations, > > but would it be possible to use bundle( ouput action with hrw algorithm > instead of multipath calculation to a register?. > > I say this, because if you look at lib/multipath.c lib/bundle.c you will > find that bundle.c is going to consider the up/down status (slave_enabled > check) of the links. > > That way the controller doesn't need to modify any flow based on link > status. > > On Wed, Sep 20, 2017 at 5:45 AM, Gao Zhenyu <[email protected]> > wrote: > >> Thansk for the questions. >> >> the multipath_port can be set via ovn-nbctl. >> Like : ovn-nbctl -- --id=@lrt create Logical_Router_Static_Route >> ip_prefix=0.0.0.0/0 nexthop=10.88.77.1 multipath_port=[mp1,mp2] -- add >> Logical_Router edge1 static_routes @lrt >> This patch haven't implement a ovn-nbctl command to configure multipath >> routing. Because I am still considering reusing nexthop or output_port(make >> them become array entries), and want to collect suggestions on it. >> >> About the status of next -hop, I would like to introduce bundle_load and >> bfd to make it later. >> >> Thanks >> Zhenyu Gao >> >> 2017-09-20 11:13 GMT+08:00 <[email protected]>: >> >>> How to configure multipath_port in static_route? I think the the >>> multipath >>> can be figured out from exist data of static_route, may not need to add >>> this multipath_port column. >>> >>> And I think we should add a status column to indicate the nexthop state. >>> When some of nexthop in multipath is down, ovn should change the >>> correspond flows. >>> >>> Thanks. >>> >>> >>> >>> >>> >>> Zhenyu Gao <[email protected]> >>> 发件人： [email protected] >>> 2017/09/19 19:37 >>> >>> 收件人： [email protected], [email protected], >>> [email protected], [email protected], [email protected], >>> 抄送： >>> 主题： [ovs-dev] [PATCH v1 1/3] Add multipath static router in >>> OVN northd and north-db >>> >>> >>> 1. ovn-nb.ovsschema was updated to add new field multipath_port. >>> 2. Add multipath feature in ovn-northd part. northd generates multipath >>> flows to dispatch traffic by using packet's IP dst address if user set >>> Logical_Router_Static_Route's multipath_port with ports. >>> 3. Add new table(lr_in_multipath) in ovn-northd's router ingress stages >>> to dispatch traffic to ports. >>> 4. Add multipath flow in Table 5(lr_in_ip_routing) and store hash result >>> into reg0. reg9[2] was used to indicate packet which need dispatching. >>> 5. Add multipath feature description in ovn/northd/ovn-northd.8.xml >>> and ovn/ovn-nb.xml >>> >>> Signed-off-by: Zhenyu Gao <[email protected]> >>> --- >>> ovn/northd/ovn-northd.8.xml | 67 +++++++++++- >>> ovn/northd/ovn-northd.c | 245 >>> ++++++++++++++++++++++++++++++++++++++------ >>> ovn/ovn-nb.ovsschema | 6 +- >>> ovn/ovn-nb.xml | 9 ++ >>> 4 files changed, 289 insertions(+), 38 deletions(-) >>> >>> diff --git a/ovn/northd/ovn-northd.8.xml b/ovn/northd/ovn-northd.8.xml >>> index 0d85ec0..b1ce9a9 100644 >>> --- a/ovn/northd/ovn-northd.8.xml >>> +++ b/ovn/northd/ovn-northd.8.xml >>> @@ -1598,6 +1598,9 @@ icmp4 { >>> port (ingress table <code>ARP Request</code> will generate an ARP >>> request, if needed, with <code>reg0</code> as the target protocol >>> address and <code>reg1</code> as the source protocol address). >>> + A IP route can be configured that it has multipath to next-hop. >>> + If a packet has multipath to destination, OVN assign the port >>> + index into reg[0] to indicate the packet's output port in table 6. >>> </p> >>> >>> <p> >>> @@ -1617,6 +1620,28 @@ icmp4 { >>> >>> <li> >>> <p> >>> + IPv4/IPV6 multipath routing table. For each route to IPv4/IPv6 >>> + network <var>N</var> with netmask <var>M</var>, on multipath >>> port >>> + <var>P</var> with IP address <var>A</var> and Ethernet >>> + address <var>E</var>, a logical flow with match >>> + <code>ip4.dst ==<var>N</var>/<var>M</var></code>,whose >>> priority >>> + is the number of 1-bits plus 10 in <var>M</var>, >>> + has the following actions: >>> + </p> >>> + >>> + <pre> >>> +ip.ttl--; >>> +multipath (nw_dst, 0, modulo_n, <var>n_links</var>, 0, reg0); >>> +reg9[2] = 1 >>> +next; >>> + </pre> >>> + <p> >>> + <var>n_links</var> is the number of multipath port. >>> + </p> >>> + </li> >>> + >>> + <li> >>> + <p> >>> IPv4 routing table. For each route to IPv4 network >>> <var>N</var> with >>> netmask <var>M</var>, on router port <var>P</var> with IP >>> address >>> <var>A</var> and Ethernet >>> @@ -1686,7 +1711,43 @@ next; >>> </li> >>> </ul> >>> >>> - <h3>Ingress Table 6: ARP/ND Resolution</h3> >>> + <h3>Ingress Table 6: Multipath</h3> >>> + <p> >>> + Any packet taht reaches this table is an IP packet and reg9[2]=1 >>> + using the following flows to route to corresponding port. This >>> table >>> + implement dispatching by consuming reg0. >>> + </p> >>> + >>> + <ul> >>> + <li> >>> + <p> >>> + A packet with netmask <var>M</var>, IP address <var>A</var> >>> and >>> + <code>reg9[2] = 1</code>, whose priority above 1 has following >>> + actions: >>> + </p> >>> + >>> + <pre> >>> +reg0 = <var>G</var>; >>> +reg1 = <var>A</var>; >>> +eth.src = <var>E</var>; >>> +outport = <var>P</var>; >>> +flags.loopback = 1; >>> +next; >>> + </pre> >>> + >>> + <p> >>> + <var>G</var> is the gateway IP address. <var>A</var>, >>> <var>E</var> >>> + and <var>P</var> are the values that were described in >>> multipath >>> + routeing in table 5 >>> + </p> >>> + >>> + <p> >>> + A priority-0 logical flow with match has actions >>> <code>next;</code>. >>> + </p> >>> + </li> >>> + </ul> >>> + >>> + <h3>Ingress Table 7: ARP/ND Resolution</h3> >>> >>> <p> >>> Any packet that reaches this table is an IP packet whose next-hop >>> @@ -1779,7 +1840,7 @@ next; >>> </li> >>> </ul> >>> >>> - <h3>Ingress Table 7: Gateway Redirect</h3> >>> + <h3>Ingress Table 8: Gateway Redirect</h3> >>> >>> <p> >>> For distributed logical routers where one of the logical router >>> @@ -1836,7 +1897,7 @@ next; >>> </li> >>> </ul> >>> >>> - <h3>Ingress Table 8: ARP Request</h3> >>> + <h3>Ingress Table 9: ARP Request</h3> >>> >>> <p> >>> In the common case where the Ethernet destination has been >>> resolved, this >>> diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c >>> index 49e4ac3..44d1fd4 100644 >>> --- a/ovn/northd/ovn-northd.c >>> +++ b/ovn/northd/ovn-northd.c >>> @@ -135,9 +135,10 @@ enum ovn_stage { >>> PIPELINE_STAGE(ROUTER, IN, UNSNAT, 3, "lr_in_unsnat") \ >>> PIPELINE_STAGE(ROUTER, IN, DNAT, 4, "lr_in_dnat") \ >>> PIPELINE_STAGE(ROUTER, IN, IP_ROUTING, 5, "lr_in_ip_routing") \ >>> - PIPELINE_STAGE(ROUTER, IN, ARP_RESOLVE, 6, "lr_in_arp_resolve") \ >>> - PIPELINE_STAGE(ROUTER, IN, GW_REDIRECT, 7, "lr_in_gw_redirect") \ >>> - PIPELINE_STAGE(ROUTER, IN, ARP_REQUEST, 8, "lr_in_arp_request") \ >>> + PIPELINE_STAGE(ROUTER, IN, MULTIPATH, 6, "lr_in_multipath") \ >>> + PIPELINE_STAGE(ROUTER, IN, ARP_RESOLVE, 7, "lr_in_arp_resolve") \ >>> + PIPELINE_STAGE(ROUTER, IN, GW_REDIRECT, 8, "lr_in_gw_redirect") \ >>> + PIPELINE_STAGE(ROUTER, IN, ARP_REQUEST, 9, "lr_in_arp_request") \ >>> \ >>> /* Logical router egress stages. */ \ >>> PIPELINE_STAGE(ROUTER, OUT, UNDNAT, 0, "lr_out_undnat") \ >>> @@ -173,6 +174,11 @@ enum ovn_stage { >>> * one of the logical router's own IP addresses. */ >>> #define REGBIT_EGRESS_LOOPBACK "reg9[1]" >>> >>> +/* Indicate multipath action has process this packet and store hash >>> result >>> + * into other regX. Should consume the hash result to determin the right >>> + * output port. */ >>> +#define REGBIT_MULTIPATH "reg9[2]" >>> + >>> /* Returns an "enum ovn_stage" built from the arguments. */ >>> static enum ovn_stage >>> ovn_stage_build(enum ovn_datapath_type dp_type, enum ovn_pipeline >>> pipeline, >>> @@ -4142,72 +4148,165 @@ add_route(struct hmap *lflows, const struct >>> ovn_port *op, >>> } >>> >>> static void >>> -build_static_route_flow(struct hmap *lflows, struct ovn_datapath *od, >>> - struct hmap *ports, >>> - const struct nbrec_logical_router_static_route >>> *route) >>> +add_multipath_route(struct hmap *lflows, uint32_t port_num, >>> + struct ovn_port **out_ports, >>> + const char **lrp_addr_s, >>> + struct ovn_datapath *od, >>> + const char *network_s, int plen, >>> + const char *gateway, const char *policy) >>> +{ >>> + bool is_ipv4 = strchr(network_s, '.') ? true : false; >>> + struct ds match = DS_EMPTY_INITIALIZER; >>> + const char *dir; >>> + uint16_t priority; >>> + >>> + if (policy && !strcmp(policy, "src-ip")) { >>> + dir = "src"; >>> + priority = plen * 2; >>> + } else { >>> + dir = "dst"; >>> + priority = (plen * 2) + 1; >>> + } >>> + >>> + /* Set higer priority than regular route. */ >>> + priority += 10; >>> + >>> + ds_put_format(&match, "ip%s.%s == %s/%d", is_ipv4 ? "4" : "6", dir, >>> + network_s, plen); >>> + >>> + struct ds actions = DS_EMPTY_INITIALIZER; >>> + >>> + ds_put_format(&actions, "ip.ttl--; "); >>> + ds_put_format(&actions, >>> + "multipath (nw_dst, 0, modulo_n, %u, 0, reg0); " >>> + "%s = 1; " >>> + "next;", >>> + port_num, REGBIT_MULTIPATH); >>> + >>> + /* The priority here is calculated to implement longest-prefix-match >>> + * routing. */ >>> + ovn_lflow_add(lflows, od, S_ROUTER_IN_IP_ROUTING, priority, >>> + ds_cstr(&match), ds_cstr(&actions)); >>> + >>> + for (int i = 0; i < port_num; i++) { >>> + struct ds mp_match = DS_EMPTY_INITIALIZER; >>> + struct ds mp_actions = DS_EMPTY_INITIALIZER; >>> + >>> + ds_put_format(&mp_match, "%s == 1 && reg0 == %d && ", >>> + REGBIT_MULTIPATH, i); >>> + ds_put_format(&mp_match, "ip%s.%s == %s/%d", >>> + is_ipv4 ? "4" : "6", dir, >>> + network_s, plen); >>> + >>> + ds_put_format(&mp_actions, "%sreg0 = ", is_ipv4 ? "" : "xx"); >>> + if (gateway) { >>> + ds_put_cstr(&mp_actions, gateway); >>> + } else { >>> + ds_put_format(&mp_actions, "ip%s.dst", is_ipv4 ? "4" : "6"); >>> + } >>> + >>> + ds_put_format(&mp_actions, "; " >>> + "%sreg1 = %s; " >>> + "eth.src = %s; " >>> + "outport = %s; " >>> + "flags.loopback = 1; " >>> + "next;", >>> + is_ipv4 ? "" : "xx", >>> + lrp_addr_s[i], >>> + out_ports[i]->lrp_networks.ea_s, >>> + out_ports[i]->json_key); >>> + >>> + /* Add flow in table 6 to determin the right output port >>> + * for this traffic. */ >>> + ovn_lflow_add(lflows, od, S_ROUTER_IN_MULTIPATH, priority, >>> + ds_cstr(&mp_match), ds_cstr(&mp_actions)); >>> + ds_destroy(&mp_match); >>> + ds_destroy(&mp_actions); >>> + } >>> + ds_destroy(&match); >>> + ds_destroy(&actions); >>> +} >>> + >>> +static bool >>> +verify_nexthop_prefix(const struct nbrec_logical_router_static_route >>> *route, >>> + bool *is_ipv4, char **prefix_s, unsigned int >>> *plen) >>> { >>> ovs_be32 nexthop; >>> - const char *lrp_addr_s = NULL; >>> - unsigned int plen; >>> - bool is_ipv4; >>> >>> /* Verify that the next hop is an IP address with an all-ones mask. >>> */ >>> - char *error = ip_parse_cidr(route->nexthop, &nexthop, &plen); >>> + char *error = ip_parse_cidr(route->nexthop, &nexthop, plen); >>> if (!error) { >>> - if (plen != 32) { >>> + if (*plen != 32) { >>> static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, >>> 1); >>> VLOG_WARN_RL(&rl, "bad next hop mask %s", route->nexthop); >>> - return; >>> + return false; >>> } >>> - is_ipv4 = true; >>> + *is_ipv4 = true; >>> } else { >>> free(error); >>> >>> struct in6_addr ip6; >>> - error = ipv6_parse_cidr(route->nexthop, &ip6, &plen); >>> + error = ipv6_parse_cidr(route->nexthop, &ip6, plen); >>> if (!error) { >>> - if (plen != 128) { >>> + if (*plen != 128) { >>> static struct vlog_rate_limit rl = >>> VLOG_RATE_LIMIT_INIT(5, 1); >>> VLOG_WARN_RL(&rl, "bad next hop mask %s", >>> route->nexthop); >>> - return; >>> + return false; >>> } >>> - is_ipv4 = false; >>> + *is_ipv4 = false; >>> } else { >>> static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, >>> 1); >>> VLOG_WARN_RL(&rl, "bad next hop ip address %s", >>> route->nexthop); >>> free(error); >>> - return; >>> + return false; >>> } >>> } >>> >>> - char *prefix_s; >>> - if (is_ipv4) { >>> + if (*is_ipv4) { >>> ovs_be32 prefix; >>> /* Verify that ip prefix is a valid IPv4 address. */ >>> - error = ip_parse_cidr(route->ip_prefix, &prefix, &plen); >>> + error = ip_parse_cidr(route->ip_prefix, &prefix, plen); >>> if (error) { >>> static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, >>> 1); >>> VLOG_WARN_RL(&rl, "bad 'ip_prefix' in static routes %s", >>> route->ip_prefix); >>> free(error); >>> - return; >>> + return false; >>> } >>> - prefix_s = xasprintf(IP_FMT, IP_ARGS(prefix & >>> be32_prefix_mask(plen))); >>> + *prefix_s = xasprintf(IP_FMT, IP_ARGS(prefix >>> + & >>> be32_prefix_mask(*plen))); >>> } else { >>> /* Verify that ip prefix is a valid IPv6 address. */ >>> struct in6_addr prefix; >>> - error = ipv6_parse_cidr(route->ip_prefix, &prefix, &plen); >>> + error = ipv6_parse_cidr(route->ip_prefix, &prefix, plen); >>> if (error) { >>> static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, >>> 1); >>> VLOG_WARN_RL(&rl, "bad 'ip_prefix' in static routes %s", >>> route->ip_prefix); >>> free(error); >>> - return; >>> + return false; >>> } >>> - struct in6_addr mask = ipv6_create_mask(plen); >>> + struct in6_addr mask = ipv6_create_mask(*plen); >>> struct in6_addr network = ipv6_addr_bitand(&prefix, &mask); >>> - prefix_s = xmalloc(INET6_ADDRSTRLEN); >>> - inet_ntop(AF_INET6, &network, prefix_s, INET6_ADDRSTRLEN); >>> + *prefix_s = xmalloc(INET6_ADDRSTRLEN); >>> + inet_ntop(AF_INET6, &network, *prefix_s, INET6_ADDRSTRLEN); >>> + } >>> + >>> + return true; >>> +} >>> + >>> +static void >>> +build_static_route_flow(struct hmap *lflows, struct ovn_datapath *od, >>> + struct hmap *ports, >>> + const struct nbrec_logical_router_static_route >>> *route) >>> +{ >>> + const char *lrp_addr_s = NULL; >>> + unsigned int plen; >>> + bool is_ipv4; >>> + char *prefix_s = NULL; >>> + >>> + if (!verify_nexthop_prefix(route, &is_ipv4, &prefix_s, &plen)) { >>> + return; >>> } >>> >>> /* Find the outgoing port. */ >>> @@ -4270,7 +4369,75 @@ build_static_route_flow(struct hmap *lflows, >>> struct >>> ovn_datapath *od, >>> policy); >>> >>> free_prefix_s: >>> - free(prefix_s); >>> + if (prefix_s) { >>> + free(prefix_s); >>> + } >>> +} >>> + >>> +static void >>> +build_multipath_flow(struct hmap *lflows, struct ovn_datapath *od, >>> + struct hmap *ports, >>> + const struct nbrec_logical_router_static_route >>> *route) >>> +{ >>> + unsigned int plen; >>> + bool is_ipv4; >>> + char *prefix_s = NULL; >>> + >>> + if (!verify_nexthop_prefix(route, &is_ipv4, &prefix_s, &plen)) { >>> + return; >>> + } >>> + >>> + /* Find the outgoing port. */ >>> + struct ovn_port **out_ports = xmalloc(route->n_multipath_port * >>> + sizeof(struct ovn_port *)); >>> + const char **lrp_addr_s = xmalloc(route->n_multipath_port * >>> + sizeof(const char *)); >>> + for (int i = 0; i < route->n_multipath_port; i++) { >>> + // TODO May need to consider some ports are not found? >>> + out_ports[i] = ovn_port_find(ports, route->multipath_port[i]); >>> + if (!out_ports[i]) { >>> + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, >>> 1); >>> + VLOG_WARN_RL(&rl, "Bad out port %s for static route %s", >>> + route->multipath_port[i], route->ip_prefix); >>> + goto free_ports_lrp_addr; >>> + } >>> + >>> + lrp_addr_s[i] = find_lrp_member_ip(out_ports[i], >>> route->nexthop); >>> + if (!lrp_addr_s[i]) { >>> + if (is_ipv4) { >>> + if (out_ports[i]->lrp_networks.n_ipv4_addrs) { >>> + lrp_addr_s[i] = out_ports[i]-> >>> + lrp_networks.ipv4_addrs[0].addr_s; >>> + } >>> + } else { >>> + if (out_ports[i]->lrp_networks.n_ipv6_addrs) { >>> + lrp_addr_s[i] = out_ports[i]-> >>> + lrp_networks.ipv6_addrs[0].addr_s; >>> + } >>> + } >>> + } >>> + if (!lrp_addr_s[i]) { >>> + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, >>> 1); >>> + VLOG_WARN_RL(&rl, >>> + "%s has no path for static route %s; next hop >>> %s", >>> + route->multipath_port[i], route->ip_prefix, >>> + route->nexthop); >>> + goto free_ports_lrp_addr; >>> + } >>> + } >>> + >>> + >>> + char *policy = route->policy ? route->policy : "dst-ip"; >>> + add_multipath_route(lflows, route->n_multipath_port, >>> + out_ports, lrp_addr_s, od, >>> + prefix_s, plen, route->nexthop, policy); >>> + >>> +free_ports_lrp_addr: >>> + free(out_ports); >>> + free(lrp_addr_s); >>> + if (prefix_s) { >>> + free(prefix_s); >>> + } >>> } >>> >>> static void >>> @@ -5344,7 +5511,7 @@ build_lrouter_flows(struct hmap *datapaths, struct >>> hmap *ports, >>> } >>> } >>> >>> - /* Convert the static routes to flows. */ >>> + /* Convert the static routes and multipath route to flows. */ >>> HMAP_FOR_EACH (od, key_node, datapaths) { >>> if (!od->nbr) { >>> continue; >>> @@ -5355,12 +5522,24 @@ build_lrouter_flows(struct hmap *datapaths, >>> struct >>> hmap *ports, >>> >>> route = od->nbr->static_routes[i]; >>> build_static_route_flow(lflows, od, ports, route); >>> + /* Logical router ingress table 5-6: Multipath Routing. >>> + * >>> + * If router has configured a traffic has multiple paths >>> + * to destination. The right output port should be firgured >>> + * out by computing IP packet's header */ >>> + if (route->n_multipath_port > 1) { >>> + /* Generate multipath routes in table 5,6 for >>> + * dedicated traffic */ >>> + build_multipath_flow(lflows, od, ports, route); >>> + } >>> } >>> + /* Packets are allowed by default in table 6. */ >>> + ovn_lflow_add(lflows, od, S_ROUTER_IN_MULTIPATH, 0, "1", >>> "next;"); >>> } >>> >>> /* XXX destination unreachable */ >>> >>> - /* Local router ingress table 6: ARP Resolution. >>> + /* Local router ingress table 7: ARP Resolution. >>> * >>> * Any packet that reaches this table is an IP packet whose next-hop >>> IP >>> * address is in reg0. (ip4.dst is the final destination.) This >>> table >>> @@ -5555,7 +5734,7 @@ build_lrouter_flows(struct hmap *datapaths, struct >>> hmap *ports, >>> "get_nd(outport, xxreg0); next;"); >>> } >>> >>> - /* Logical router ingress table 7: Gateway redirect. >>> + /* Logical router ingress table 8: Gateway redirect. >>> * >>> * For traffic with outport equal to the l3dgw_port >>> * on a distributed router, this table redirects a subset >>> @@ -5595,7 +5774,7 @@ build_lrouter_flows(struct hmap *datapaths, struct >>> hmap *ports, >>> ovn_lflow_add(lflows, od, S_ROUTER_IN_GW_REDIRECT, 0, "1", >>> "next;"); >>> } >>> >>> - /* Local router ingress table 8: ARP request. >>> + /* Local router ingress table 9: ARP request. >>> * >>> * In the common case where the Ethernet destination has been >>> resolved, >>> * this table outputs the packet (priority 0). Otherwise, it >>> composes >>> diff --git a/ovn/ovn-nb.ovsschema b/ovn/ovn-nb.ovsschema >>> index a077bfb..b8bdd42 100644 >>> --- a/ovn/ovn-nb.ovsschema >>> +++ b/ovn/ovn-nb.ovsschema >>> @@ -1,7 +1,7 @@ >>> { >>> "name": "OVN_Northbound", >>> "version": "5.8.0", >>> - "cksum": "2812300190 <(281)%20230-0190> 16766", >>> + "cksum": "1967092589 16903", >>> "tables": { >>> "NB_Global": { >>> "columns": { >>> @@ -235,7 +235,9 @@ >>> >>> "dst-ip"]]}, >>> "min": 0, "max": 1}}, >>> "nexthop": {"type": "string"}, >>> - "output_port": {"type": {"key": "string", "min": 0, >>> "max": 1}}}, >>> + "output_port": {"type": {"key": "string", "min": 0, >>> "max": 1}}, >>> + "multipath_port": {"type": {"key": "string", "min": 0, >>> + "max": "unlimited"}}}, >>> "isRoot": false}, >>> "NAT": { >>> "columns": { >>> diff --git a/ovn/ovn-nb.xml b/ovn/ovn-nb.xml >>> index 9869d7e..15feb97 100644 >>> --- a/ovn/ovn-nb.xml >>> +++ b/ovn/ovn-nb.xml >>> @@ -1487,6 +1487,15 @@ >>> address as the one via which the <ref column="nexthop"/> is >>> reachable. >>> </p> >>> </column> >>> + <column name="multipath_port"> >>> + <p> >>> + The name of the <ref table="Logical_Router_Port"/> via which the >>> packet >>> + needs to be sent out. When it contains more than two ports, it >>> means >>> + packet has multiple candidate output ports. OVN uses the packet >>> header >>> + to determin which port the packet would be delivered to. >>> + Currently, OVN consumes destination IP address to figure out >>> port. >>> + </p> >>> + </column> >>> </table> >>> >>> <table name="NAT" title="NAT rules"> >>> -- >>> 1.8.3.1 >>> >>> _______________________________________________ >>> dev mailing list >>> [email protected] >>> https://mail.openvswitch.org/mailman/listinfo/ovs-dev >>> >>> >>> _______________________________________________ >>> dev mailing list >>> [email protected] >>> https://mail.openvswitch.org/mailman/listinfo/ovs-dev >>> >> >> > _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
