On Fri, Jan 18, 2019 at 12:21 AM Han Zhou <[email protected]> wrote:
> Hi Numan,
>
> With v5 the new test case "external logical port" fails.
> And please see more comments inlined.
>
> On Tue, Jan 15, 2019 at 12:09 PM <[email protected]> wrote:
> >
> > From: Numan Siddique <[email protected]>
> >
> > In the case of OpenStack + OVN, when the VMs are booted on
> > hypervisors supporting SR-IOV nics, there are no OVS ports
> > for these VMs. When these VMs sends DHCPv4, DHPCv6 or IPv6
> > Router Solicitation requests, the local ovn-controller
> > cannot reply to these packets. OpenStack Neutron dhcp agent
> > service needs to be run to serve these requests.
> >
> > With the new logical port type - 'external', OVN itself can
> > handle these requests avoiding the need to deploy any
> > external services like neutron dhcp agent.
> >
> > To make use of this feature, CMS has to
> > - create a logical port for such VMs
> > - set the type to 'external'
> > - set requested-chassis="<chassis-name>" in the options
> > column.
> > - create a localnet port for the logical switch
> > - configure the ovn-bridge-mappings option in the OVS db.
> >
> > When the ovn-controller running in that 'chassis', detects
> > the Port_Binding row, it adds the necessary DHCPv4/v6 OF
> > flows. Since the packet enters the logical switch pipeline
> > via the localnet port, the inport register (reg14) is set
> > to the tunnel key of localnet port in the match conditions.
> >
> > In case the chassis goes down for some reason, it is the
> > responsibility of CMS to change the 'requested-chassis'
> > option to some other active chassis, so that it can serve
> > these requests.
> >
> > When the VM with the external port, sends an ARP request for
> > the router ips, only the chassis which has claimed the port,
> > will reply to the ARP requests. Rest of the chassis on
> > receiving these packets drop them in the ingress switch
> > datapath stage - S_SWITCH_IN_EXTERNAL_PORT which is just
> > before S_SWITCH_IN_L2_LKUP.
> >
> > This would guarantee that only the chassis which has claimed
> > the external ports will run the router datapath pipeline.
> >
> > Signed-off-by: Numan Siddique <[email protected]>
> > ---
> >
> > v4 -> v5
> > ------
> > * Addressed review comments from Han Zhou.
> >
> > v3 -> v4
> > ------
> > * Updated the documention as per Han Zhou's suggestion.
> >
> > v2 -> v3
> > -------
> > * Rebased
> >
> > ovn/controller/binding.c | 12 +
> > ovn/controller/lflow.c | 41 ++-
> > ovn/controller/lflow.h | 2 +
> > ovn/controller/lport.c | 26 ++
> > ovn/controller/lport.h | 5 +
> > ovn/controller/ovn-controller.c | 6 +
> > ovn/lib/ovn-util.c | 1 +
> > ovn/northd/ovn-northd.8.xml | 37 ++-
> > ovn/northd/ovn-northd.c | 85 ++++-
> > ovn/ovn-architecture.7.xml | 78 +++++
> > ovn/ovn-nb.xml | 47 +++
> > tests/ovn.at | 530 +++++++++++++++++++++++++++++++-
> > 12 files changed, 848 insertions(+), 22 deletions(-)
> >
> > diff --git a/ovn/controller/binding.c b/ovn/controller/binding.c
> > index 021ecddcf..64e605b92 100644
> > --- a/ovn/controller/binding.c
> > +++ b/ovn/controller/binding.c
> > @@ -471,6 +471,18 @@ consider_local_datapath(struct ovsdb_idl_txn
> *ovnsb_idl_txn,
> > * for them. */
> > sset_add(local_lports, binding_rec->logical_port);
> > our_chassis = false;
> > + } else if (!strcmp(binding_rec->type, "external")) {
> > + const char *chassis_id = smap_get(&binding_rec->options,
> > + "requested-chassis");
> > + our_chassis = chassis_id && (
> > + !strcmp(chassis_id, chassis_rec->name) ||
> > + !strcmp(chassis_id, chassis_rec->hostname));
> > + if (our_chassis) {
> > + add_local_datapath(sbrec_datapath_binding_by_key,
> > + sbrec_port_binding_by_datapath,
> > + sbrec_port_binding_by_name,
> > + binding_rec->datapath, true,
> local_datapaths);
> > + }
> > }
> >
> > if (our_chassis
> > diff --git a/ovn/controller/lflow.c b/ovn/controller/lflow.c
> > index 8db81927e..98e8ed3b9 100644
> > --- a/ovn/controller/lflow.c
> > +++ b/ovn/controller/lflow.c
> > @@ -52,7 +52,10 @@ lflow_init(void)
> > struct lookup_port_aux {
> > struct ovsdb_idl_index *sbrec_multicast_group_by_name_datapath;
> > struct ovsdb_idl_index *sbrec_port_binding_by_name;
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type;
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key;
> > const struct sbrec_datapath_binding *dp;
> > + const struct sbrec_chassis *chassis;
> > };
> >
> > struct condition_aux {
> > @@ -66,6 +69,8 @@ static void consider_logical_flow(
> > struct ovsdb_idl_index *sbrec_chassis_by_name,
> > struct ovsdb_idl_index *sbrec_multicast_group_by_name_datapath,
> > struct ovsdb_idl_index *sbrec_port_binding_by_name,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key,
> > const struct sbrec_logical_flow *,
> > const struct hmap *local_datapaths,
> > const struct sbrec_chassis *,
> > @@ -89,8 +94,24 @@ lookup_port_cb(const void *aux_, const char
> *port_name, unsigned int *portp)
> > const struct sbrec_port_binding *pb
> > = lport_lookup_by_name(aux->sbrec_port_binding_by_name,
> port_name);
> > if (pb && pb->datapath == aux->dp) {
> > - *portp = pb->tunnel_key;
> > - return true;
> > + if (strcmp(pb->type, "external")) {
> > + *portp = pb->tunnel_key;
> > + return true;
> > + }
> > + const char *chassis_id = smap_get(&pb->options,
> > + "requested-chassis");
> > + if (chassis_id && (!strcmp(chassis_id, aux->chassis->name) ||
> > + !strcmp(chassis_id,
> aux->chassis->hostname))) {
> > + const struct sbrec_port_binding *localnet_pb
> > + =
> lport_lookup_by_type(aux->sbrec_datapath_binding_by_key,
> > + aux->sbrec_port_binding_by_type,
> > + aux->dp->tunnel_key, "localnet");
> > + if (localnet_pb) {
> > + *portp = localnet_pb->tunnel_key;
> > + return true;
> > + }
> > + }
> > + return false;
> > }
> >
> > const struct sbrec_multicast_group *mg = mcgroup_lookup_by_dp_name(
> > @@ -144,6 +165,8 @@ add_logical_flows(
> > struct ovsdb_idl_index *sbrec_chassis_by_name,
> > struct ovsdb_idl_index *sbrec_multicast_group_by_name_datapath,
> > struct ovsdb_idl_index *sbrec_port_binding_by_name,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key,
> > const struct sbrec_dhcp_options_table *dhcp_options_table,
> > const struct sbrec_dhcpv6_options_table *dhcpv6_options_table,
> > const struct sbrec_logical_flow_table *logical_flow_table,
> > @@ -183,6 +206,8 @@ add_logical_flows(
> > consider_logical_flow(sbrec_chassis_by_name,
> > sbrec_multicast_group_by_name_datapath,
> > sbrec_port_binding_by_name,
> > + sbrec_port_binding_by_type,
> > + sbrec_datapath_binding_by_key,
> > lflow, local_datapaths,
> > chassis, &dhcp_opts, &dhcpv6_opts,
> &nd_ra_opts,
> > addr_sets, port_groups, active_tunnels,
> > @@ -200,6 +225,8 @@ consider_logical_flow(
> > struct ovsdb_idl_index *sbrec_chassis_by_name,
> > struct ovsdb_idl_index *sbrec_multicast_group_by_name_datapath,
> > struct ovsdb_idl_index *sbrec_port_binding_by_name,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key,
> > const struct sbrec_logical_flow *lflow,
> > const struct hmap *local_datapaths,
> > const struct sbrec_chassis *chassis,
> > @@ -292,7 +319,10 @@ consider_logical_flow(
> > .sbrec_multicast_group_by_name_datapath
> > = sbrec_multicast_group_by_name_datapath,
> > .sbrec_port_binding_by_name = sbrec_port_binding_by_name,
> > - .dp = lflow->logical_datapath
> > + .sbrec_port_binding_by_type = sbrec_port_binding_by_type,
> > + .sbrec_datapath_binding_by_key = sbrec_datapath_binding_by_key,
> > + .dp = lflow->logical_datapath,
> > + .chassis = chassis
> > };
> > struct condition_aux cond_aux = {
> > .sbrec_chassis_by_name = sbrec_chassis_by_name,
> > @@ -463,6 +493,8 @@ void
> > lflow_run(struct ovsdb_idl_index *sbrec_chassis_by_name,
> > struct ovsdb_idl_index
> *sbrec_multicast_group_by_name_datapath,
> > struct ovsdb_idl_index *sbrec_port_binding_by_name,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key,
> > const struct sbrec_dhcp_options_table *dhcp_options_table,
> > const struct sbrec_dhcpv6_options_table *dhcpv6_options_table,
> > const struct sbrec_logical_flow_table *logical_flow_table,
> > @@ -481,7 +513,8 @@ lflow_run(struct ovsdb_idl_index
> *sbrec_chassis_by_name,
> >
> > add_logical_flows(sbrec_chassis_by_name,
> > sbrec_multicast_group_by_name_datapath,
> > - sbrec_port_binding_by_name, dhcp_options_table,
> > + sbrec_port_binding_by_name,
> sbrec_port_binding_by_type,
> > + sbrec_datapath_binding_by_key, dhcp_options_table,
> > dhcpv6_options_table, logical_flow_table,
> > local_datapaths, chassis, addr_sets, port_groups,
> > active_tunnels, local_lport_ids, flow_table,
> group_table,
> > diff --git a/ovn/controller/lflow.h b/ovn/controller/lflow.h
> > index d19338140..b2911e0eb 100644
> > --- a/ovn/controller/lflow.h
> > +++ b/ovn/controller/lflow.h
> > @@ -68,6 +68,8 @@ void lflow_init(void);
> > void lflow_run(struct ovsdb_idl_index *sbrec_chassis_by_name,
> > struct ovsdb_idl_index
> *sbrec_multicast_group_by_name_datapath,
> > struct ovsdb_idl_index *sbrec_port_binding_by_name,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key,
> > const struct sbrec_dhcp_options_table *,
> > const struct sbrec_dhcpv6_options_table *,
> > const struct sbrec_logical_flow_table *,
> > diff --git a/ovn/controller/lport.c b/ovn/controller/lport.c
> > index cc5c5fbb2..9c827d9b0 100644
> > --- a/ovn/controller/lport.c
> > +++ b/ovn/controller/lport.c
> > @@ -64,6 +64,32 @@ lport_lookup_by_key(struct ovsdb_idl_index
> *sbrec_datapath_binding_by_key,
> > return retval;
> > }
> >
> > +const struct sbrec_port_binding *
> > +lport_lookup_by_type(struct ovsdb_idl_index
> *sbrec_datapath_binding_by_key,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + uint64_t dp_key, const char *port_type)
> > +{
> > + /* Lookup datapath corresponding to dp_key. */
> > + const struct sbrec_datapath_binding *db = datapath_lookup_by_key(
> > + sbrec_datapath_binding_by_key, dp_key);
> > + if (!db) {
> > + return NULL;
> > + }
> > +
> > + /* Build key for an indexed lookup. */
> > + struct sbrec_port_binding *pb = sbrec_port_binding_index_init_row(
> > + sbrec_port_binding_by_type);
> > + sbrec_port_binding_index_set_datapath(pb, db);
> > + sbrec_port_binding_index_set_type(pb, port_type);
> > +
> > + const struct sbrec_port_binding *retval =
> sbrec_port_binding_index_find(
> > + sbrec_port_binding_by_type, pb);
> > +
> > + sbrec_port_binding_index_destroy_row(pb);
> > +
> > + return retval;
> > +}
> > +
> > const struct sbrec_datapath_binding *
> > datapath_lookup_by_key(struct ovsdb_idl_index
> *sbrec_datapath_binding_by_key,
> > uint64_t dp_key)
> > diff --git a/ovn/controller/lport.h b/ovn/controller/lport.h
> > index 7dcd5bee0..2d49792f6 100644
> > --- a/ovn/controller/lport.h
> > +++ b/ovn/controller/lport.h
> > @@ -42,6 +42,11 @@ const struct sbrec_port_binding *lport_lookup_by_key(
> > struct ovsdb_idl_index *sbrec_port_binding_by_key,
> > uint64_t dp_key, uint64_t port_key);
> >
> > +const struct sbrec_port_binding *lport_lookup_by_type(
> > + struct ovsdb_idl_index *sbrec_datapath_binding_by_key,
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type,
> > + uint64_t dp_key, const char *port_type);
> > +
> > const struct sbrec_datapath_binding *datapath_lookup_by_key(
> > struct ovsdb_idl_index *sbrec_datapath_binding_by_key, uint64_t
> dp_key);
> >
> > diff --git a/ovn/controller/ovn-controller.c
> b/ovn/controller/ovn-controller.c
> > index 4e9a5865f..5aab9142f 100644
> > --- a/ovn/controller/ovn-controller.c
> > +++ b/ovn/controller/ovn-controller.c
> > @@ -145,6 +145,7 @@ update_sb_monitors(struct ovsdb_idl *ovnsb_idl,
> > * ports that have a Gateway_Chassis that point's to our own
> > * chassis */
> > sbrec_port_binding_add_clause_type(&pb, OVSDB_F_EQ,
> "chassisredirect");
> > + sbrec_port_binding_add_clause_type(&pb, OVSDB_F_EQ, "external");
> > if (chassis) {
> > /* This should be mostly redundant with the other clauses for
> port
> > * bindings, but it allows us to catch any ports that are
> assigned to
> > @@ -616,6 +617,9 @@ main(int argc, char *argv[])
> > struct ovsdb_idl_index *sbrec_port_binding_by_datapath
> > = ovsdb_idl_index_create1(ovnsb_idl_loop.idl,
> > &sbrec_port_binding_col_datapath);
> > + struct ovsdb_idl_index *sbrec_port_binding_by_type
> > + = ovsdb_idl_index_create1(ovnsb_idl_loop.idl,
> > + &sbrec_port_binding_col_type);
>
> This index is used with two columns: datapath_binding and type, so it
> should be created with both columns using create2.
>
> > struct ovsdb_idl_index *sbrec_datapath_binding_by_key
> > = ovsdb_idl_index_create1(ovnsb_idl_loop.idl,
> >
> &sbrec_datapath_binding_col_tunnel_key);
> > @@ -743,6 +747,8 @@ main(int argc, char *argv[])
> > sbrec_chassis_by_name,
> > sbrec_multicast_group_by_name_datapath,
> > sbrec_port_binding_by_name,
> > + sbrec_port_binding_by_type,
> > + sbrec_datapath_binding_by_key,
> >
> sbrec_dhcp_options_table_get(ovnsb_idl_loop.idl),
> >
> sbrec_dhcpv6_options_table_get(ovnsb_idl_loop.idl),
> >
> sbrec_logical_flow_table_get(ovnsb_idl_loop.idl),
> > diff --git a/ovn/lib/ovn-util.c b/ovn/lib/ovn-util.c
> > index aa03919bb..a9d4b8736 100644
> > --- a/ovn/lib/ovn-util.c
> > +++ b/ovn/lib/ovn-util.c
> > @@ -319,6 +319,7 @@ static const char *OVN_NB_LSP_TYPES[] = {
> > "localport",
> > "router",
> > "vtep",
> > + "external",
> > };
> >
> > bool
> > diff --git a/ovn/northd/ovn-northd.8.xml b/ovn/northd/ovn-northd.8.xml
> > index 392a5efc9..c8883d60d 100644
> > --- a/ovn/northd/ovn-northd.8.xml
> > +++ b/ovn/northd/ovn-northd.8.xml
> > @@ -626,7 +626,8 @@ nd_na_router {
> > <p>
> > This table adds the DHCPv4 options to a DHCPv4 packet from the
> > logical ports configured with IPv4 address(es) and DHCPv4 options,
> > - and similarly for DHCPv6 options.
> > + and similarly for DHCPv6 options. This table also adds flows for
> the
> > + logical ports of type <code>external</code>.
> > </p>
> >
> > <ul>
> > @@ -827,7 +828,39 @@ output;
> > </li>
> > </ul>
> >
> > - <h3>Ingress Table 16 Destination Lookup</h3>
> > + <h3>Ingress table 16 External ports</h3>
> > +
> > + <p>
> > + Traffic from the <code>external</code> logical ports enter the
> ingress
> > + datapath pipeline via the <code>localnet</code> port. This table
> adds the
> > + below logical flows to handle the traffic from these ports.
> > + </p>
> > +
> > + <ul>
> > + <li>
> > + <p>
> > + A priority-100 flow is added for each <code>external</code>
> logical
> > + port which doesn't reside on a chassis to drop the ARP/IPv6 NS
> > + request to the router IP(s) (of the logical switch) which
> matches
> > + on the <code>inport</code> of the <code>external</code>
> logical port
> > + and the valid <code>eth.src</code> address(es) of the
> > + <code>external</code> logical port.
> > + </p>
> > +
> > + <p>
> > + This flow guarantees that the ARP/NS request to the router IP
> > + address from the external ports is responded by only the
> chassis
> > + which has claimed these external ports. All the other chassis,
> > + drops these packets.
> > + </p>
> > + </li>
> > +
> > + <li>
> > + A priority-0 flow that matches all packets to advances to table
> 17.
> > + </li>
> > + </ul>
> > +
> > + <h3>Ingress Table 17 Destination Lookup</h3>
> >
> > <p>
> > This table implements switching behavior. It contains these
> logical
> > diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
> > index 3fd8a8757..87208c6c1 100644
> > --- a/ovn/northd/ovn-northd.c
> > +++ b/ovn/northd/ovn-northd.c
> > @@ -119,7 +119,8 @@ enum ovn_stage {
> > PIPELINE_STAGE(SWITCH, IN, DHCP_RESPONSE, 13,
> "ls_in_dhcp_response") \
> > PIPELINE_STAGE(SWITCH, IN, DNS_LOOKUP, 14, "ls_in_dns_lookup")
> \
> > PIPELINE_STAGE(SWITCH, IN, DNS_RESPONSE, 15,
> "ls_in_dns_response") \
> > - PIPELINE_STAGE(SWITCH, IN, L2_LKUP, 16, "ls_in_l2_lkup")
> \
> > + PIPELINE_STAGE(SWITCH, IN, EXTERNAL_PORT, 16,
> "ls_in_external_port") \
> > + PIPELINE_STAGE(SWITCH, IN, L2_LKUP, 17, "ls_in_l2_lkup")
> \
> >
> \
> > /* Logical switch egress stages. */
> \
> > PIPELINE_STAGE(SWITCH, OUT, PRE_LB, 0, "ls_out_pre_lb")
> \
> > @@ -2942,6 +2943,12 @@ lsp_is_up(const struct nbrec_logical_switch_port
> *lsp)
> > return !lsp->up || *lsp->up;
> > }
> >
> > +static bool
> > +lsp_is_external(const struct nbrec_logical_switch_port *nbsp)
> > +{
> > + return !strcmp(nbsp->type, "external");
> > +}
> > +
> > static bool
> > build_dhcpv4_action(struct ovn_port *op, ovs_be32 offer_ip,
> > struct ds *options_action, struct ds
> *response_action,
> > @@ -4185,7 +4192,7 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> > * - port type is localport
> > */
> > if (!lsp_is_up(op->nbsp) && strcmp(op->nbsp->type, "router") &&
> > - strcmp(op->nbsp->type, "localport")) {
> > + strcmp(op->nbsp->type, "localport") &&
> lsp_is_external(op->nbsp)) {
>
> Sorry that I missed this in last review. The && condition has problem.
> It will cause ARP responder flows added for all lports that are not
> external. I think it should be || here.
>
Agree. To make it easier to read, I will add a new "if" with continue -
below this one for
external port types.
>
> > continue;
> > }
> >
> > @@ -4297,6 +4304,13 @@ build_lswitch_flows(struct hmap *datapaths,
> struct hmap *ports,
> > continue;
> > }
> >
> > + bool is_external = lsp_is_external(op->nbsp);
> > + if (is_external && !op->od->localnet_port) {
> > + /* If it's an external port and there is no localnet port
> > + * ignore it. */
> > + continue;
> > + }
> > +
> > for (size_t i = 0; i < op->n_lsp_addrs; i++) {
> > for (size_t j = 0; j < op->lsp_addrs[i].n_ipv4_addrs; j++) {
> > struct ds options_action = DS_EMPTY_INITIALIZER;
> > @@ -4309,8 +4323,8 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> > ds_put_format(
> > &match, "inport == %s && eth.src == %s && "
> > "ip4.src == 0.0.0.0 && ip4.dst ==
> 255.255.255.255 && "
> > - "udp.src == 68 && udp.dst == 67", op->json_key,
> > - op->lsp_addrs[i].ea_s);
> > + "udp.src == 68 && udp.dst == 67",
> > + op->json_key, op->lsp_addrs[i].ea_s);
>
> No change here?
>
I think it's unwanted and unrelated change. I will correct it.
> >
> > ovn_lflow_add(lflows, op->od,
> S_SWITCH_IN_DHCP_OPTIONS,
> > 100, ds_cstr(&match),
> > @@ -4415,7 +4429,9 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> > /* Ingress table 12 and 13: DHCP options and response, by default
> goto
> > * next. (priority 0).
> > * Ingress table 14 and 15: DNS lookup and response, by default
> goto next.
> > - * (priority 0).*/
> > + * (priority 0).
> > + * Ingress table 16 - External port handling, by default goto next.
> > + * (priority 0). */
> >
> > HMAP_FOR_EACH (od, key_node, datapaths) {
> > if (!od->nbs) {
> > @@ -4426,9 +4442,58 @@ build_lswitch_flows(struct hmap *datapaths,
> struct hmap *ports,
> > ovn_lflow_add(lflows, od, S_SWITCH_IN_DHCP_RESPONSE, 0, "1",
> "next;");
> > ovn_lflow_add(lflows, od, S_SWITCH_IN_DNS_LOOKUP, 0, "1",
> "next;");
> > ovn_lflow_add(lflows, od, S_SWITCH_IN_DNS_RESPONSE, 0, "1",
> "next;");
> > + ovn_lflow_add(lflows, od, S_SWITCH_IN_EXTERNAL_PORT, 0, "1",
> "next;");
> > }
> >
> > - /* Ingress table 16: Destination lookup, broadcast and multicast
> handling
> > + HMAP_FOR_EACH (op, key_node, ports) {
> > + if (!op->nbsp || !lsp_is_external(op->nbsp)) {
> > + continue;
> > + }
> > +
> > + /* Table 16: External port. Drop ARP request for router ips from
> > + * external ports on chassis not binding those ports.
> > + * This makes the router pipeline to be run only on the chassis
> > + * binding the external ports. */
> > +
> > + for (size_t i = 0; i < op->n_lsp_addrs; i++) {
> > + for (size_t j = 0; j < op->od->n_router_ports; j++) {
> > + struct ovn_port *rp = op->od->router_ports[j];
> > + for (size_t k = 0; k < rp->n_lsp_addrs; k++) {
> > + for (size_t l = 0; l <
> rp->lsp_addrs[k].n_ipv4_addrs;
> > + l++) {
> > + ds_clear(&match);
> > + ds_put_cstr(&match, "ip4");
> > + ds_put_format(
> > + &match, "inport == %s && eth.src == %s"
> > + " && !is_chassis_resident(%s)"
> > + " && arp.tpa == %s && arp.op == 1",
> > + op->json_key, op->lsp_addrs[i].ea_s,
> op->json_key,
>
> I believe the inport should match the localnet port's json_key here,
> since it is coming from a localnet port.
>
Both would work. If you see the code in lflow.c in this patch - it will get
the tunnel
key of the localnet port if the port_binding type is "external".
That's how even the DHCP requests are handled. ovn-controller will translate
the logical flows with action "put_dhcp_opts" only the chassis claiming the
external ports.
Thanks
Numan
>
> > + rp->lsp_addrs[k].ipv4_addrs[l].addr_s);
> > + ovn_lflow_add(lflows, op->od,
> > + S_SWITCH_IN_EXTERNAL_PORT, 100,
> > + ds_cstr(&match), "drop;");
> > + }
> > + for (size_t l = 0; l <
> rp->lsp_addrs[k].n_ipv6_addrs;
> > + l++) {
> > + ds_clear(&match);
> > + ds_put_format(
> > + &match, "inport == %s && eth.src == %s"
> > + " && !is_chassis_resident(%s)"
> > + " && nd_ns && ip6.dst == {%s, %s} && "
> > + "nd.target == %s",
> > + op->json_key, op->lsp_addrs[i].ea_s,
> op->json_key,
>
> same as above.
>
> > + rp->lsp_addrs[k].ipv6_addrs[l].addr_s,
> > + rp->lsp_addrs[k].ipv6_addrs[l].sn_addr_s,
> > + rp->lsp_addrs[k].ipv6_addrs[l].addr_s);
> > + ovn_lflow_add(lflows, op->od,
> > + S_SWITCH_IN_EXTERNAL_PORT, 100,
> > + ds_cstr(&match), "drop;");
> > + }
> > + }
> > + }
> > + }
> > + }
> > + /* Ingress table 17: Destination lookup, broadcast and multicast
> handling
> > * (priority 100). */
> > HMAP_FOR_EACH (op, key_node, ports) {
> > if (!op->nbsp) {
> > @@ -4448,9 +4513,9 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> > "outport = \""MC_FLOOD"\"; output;");
> > }
> >
> > - /* Ingress table 16: Destination lookup, unicast handling (priority
> 50), */
> > + /* Ingress table 17: Destination lookup, unicast handling (priority
> 50), */
> > HMAP_FOR_EACH (op, key_node, ports) {
> > - if (!op->nbsp) {
> > + if (!op->nbsp || lsp_is_external(op->nbsp)) {
> > continue;
> > }
> >
> > @@ -4567,7 +4632,7 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> > }
> > }
> >
> > - /* Ingress table 16: Destination lookup for unknown MACs (priority
> 0). */
> > + /* Ingress table 17: Destination lookup for unknown MACs (priority
> 0). */
> > HMAP_FOR_EACH (od, key_node, datapaths) {
> > if (!od->nbs) {
> > continue;
> > @@ -4602,7 +4667,7 @@ build_lswitch_flows(struct hmap *datapaths, struct
> hmap *ports,
> > * Priority 150 rules drop packets to disabled logical ports, so
> that they
> > * don't even receive multicast or broadcast packets. */
> > HMAP_FOR_EACH (op, key_node, ports) {
> > - if (!op->nbsp) {
> > + if (!op->nbsp || lsp_is_external(op->nbsp)) {
> > continue;
> > }
> >
> > diff --git a/ovn/ovn-architecture.7.xml b/ovn/ovn-architecture.7.xml
> > index 3936e6016..405975b7b 100644
> > --- a/ovn/ovn-architecture.7.xml
> > +++ b/ovn/ovn-architecture.7.xml
> > @@ -1678,6 +1678,84 @@
> > </li>
> > </ol>
> >
> > + <h2>Native OVN services for external logical ports</h2>
> > +
> > + <p>
> > + To support OVN native services (like DHCP/IPv6 RA/DNS lookup) to the
> > + cloud resources which are external, OVN supports
> <code>external</code>
> > + logical ports.
> > + </p>
> > +
> > + <p>
> > + Below are some of the use cases where <code>external</code> ports
> can be
> > + used.
> > + </p>
> > +
> > + <ul>
> > + <li>
> > + VMs connected to SR-IOV nics - Traffic from these VMs by passes
> the
> > + kernel stack and local <code>ovn-controller</code> do not bind
> these
> > + ports and cannot serve the native services.
> > + </li>
> > + <li>
> > + When CMS supports provisioning baremetal servers.
> > + </li>
> > + </ul>
> > +
> > + <p>
> > + OVN will provide the native services if CMS has done the below
> > + configuration in the <dfn>OVN Northbound Database</dfn>.
> > + </p>
> > +
> > + <ul>
> > + <li>
> > + A row is created in <code>Logical_Switch_Port</code>, configuring
> the
> > + <ref column="addresses" table="Logical_Switch_Port" db="OVN_NB"/>
> column
> > + and setting the <ref column="type" table="Logical_Switch_Port"
> > + db="OVN_NB"/> to <code>external</code>.
> > + </li>
> > +
> > + <li>
> > + <ref column="options:requested-chassis"
> table="Logical_Switch_Port"
> > + db="OVN_NB"/> column is configured to a desired chassis.
> > + </li>
> > +
> > + <li>
> > + The chassis on which this logical port is requested has the
> > + <code>ovn-bridge-mappings</code> configured and has proper L2
> > + connectivity so that it can receive the DHCP and other related
> request
> > + packets from these external resources.
> > + </li>
> > +
> > + <li>
> > + The Logical_Switch of this port has a <code>localnet</code> port.
> > + </li>
> > +
> > + <li>
> > + Native OVN services are enabled by configuring the DHCP and other
> > + options like the way it is done for the normal logical ports.
> > + </li>
> > + </ul>
> > +
> > + <p>
> > + OVN doesn't support HA for these <code>external</code> ports. In
> case
> > + the <code>ovn-controller</code> running on the requested chassis
> goes down,
> > + it is the responsiblity of CMS, to reschedule these
> <code>external</code>
> > + ports to other active chassis.
> > + </p>
> > +
> > + <p>
> > + It is recommended to request the same chassis for all the external
> ports
> > + of a logical switch. Otherwise, the physical switch might see MAC
> flap
> > + issue when different chassis provide the native services. For
> example when
> > + supporting native DHCPv4 service, DHCPv4 server mac (configured in
> > + <ref column="options:server_mac" table="DHCP_Options" db="OVN_NB"/>
> column
> > + in table <ref table="DHCP_Options"/>)
> > + originating from different ports can cause MAC flap issue. The MAC
> of the
> > + logical router IP(s) can also flap if the same chassis is not
> requested for
> > + all the external ports of a logical switch.
> > + </p>
> > +
> > <h1>Security</h1>
> >
> > <h2>Role-Based Access Controls for the Soutbound DB</h2>
> > diff --git a/ovn/ovn-nb.xml b/ovn/ovn-nb.xml
> > index 6d6fb055a..fdf9adbfa 100644
> > --- a/ovn/ovn-nb.xml
> > +++ b/ovn/ovn-nb.xml
> > @@ -353,6 +353,53 @@
> > <dd>
> > A port to a logical switch on a VTEP gateway.
> > </dd>
> > +
> > + <dt><code>external</code></dt>
> > + <dd>
> > + <p>
> > + Represents a logical port which is external and not having
> > + an OVS port in the integration bridge.
> > + <code>OVN</code> will never receive any traffic from this
> port or
> > + send any traffic to this port. <code>OVN</code> can
> support
> > + native services like DHCPv4/DHCPv6/DNS for this port.
> > + If <ref column="options:requested-chassis"/> is defined,
> > + <code>ovn-controller</code> running in that chassis will
> bind
> > + this port to provide these native services. It is
> expected that
> > + this port belong to a bridged logical switch
> > + (with a <code>localnet</code> port).
> > + </p>
> > +
> > + <p>
> > + It is recommended to request the same chassis for all the
> > + external ports of a logical switch. Otherwise, the
> physical
> > + switch might see MAC flap issue when different chassis
> provide
> > + the native services. For example when supporting native
> DHCPv4
> > + service, DHCPv4 server mac (configured in
> > + <ref column="options:server_mac" table="DHCP_Options"
> > + db="OVN_NB"/> column in table <ref table="DHCP_Options"/>)
> > + originating from different ports can cause MAC flap issue.
> > + The MAC of the logical router IP(s) can also flap if the
> > + same chassis is not requested for all the external ports
> > + of a logical switch.
> > + </p>
> > +
> > + <p>
> > + Below are some of the use cases where
> <code>external</code>
> > + ports can be used.
> > + </p>
> > +
> > + <ul>
> > + <li>
> > + VMs connected to SR-IOV nics - Traffic from these VMs
> by passes
> > + the kernel stack and local <code>ovn-controller</code>
> do not
> > + bind these ports and cannot serve the native services.
> > + </li>
> > +
> > + <li>
> > + When CMS supports provisioning baremetal servers.
> > + </li>
> > + </ul>
> > + </dd>
> > </dl>
> > </column>
> > </group>
> > diff --git a/tests/ovn.at b/tests/ovn.at
> > index 8bada3241..94c774e8b 100644
> > --- a/tests/ovn.at
> > +++ b/tests/ovn.at
> > @@ -9594,9 +9594,9 @@ AT_CHECK([as hv2 ovs-ofctl dump-flows br-int
> table=32 | grep active_backup | gre
> > sleep 3 # let BFD sessions settle so we get the right flows on the
> right chassis
> >
> > # make sure that flows for handling the outside router port reside on
> gw1
> > -AT_CHECK([as gw1 ovs-ofctl dump-flows br-int table=24 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[1
> > +AT_CHECK([as gw1 ovs-ofctl dump-flows br-int table=25 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[1
> > ]])
> > -AT_CHECK([as gw2 ovs-ofctl dump-flows br-int table=24 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[0
> > +AT_CHECK([as gw2 ovs-ofctl dump-flows br-int table=25 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[0
> > ]])
> >
> > # make sure ARP responder flows for outside router port reside on gw1
> too
> > @@ -9686,9 +9686,9 @@ AT_CHECK([ovs-vsctl --bare --columns bfd find
> Interface name=ovn-hv1-0],[0],
> > sleep 3 # let BFD sessions settle so we get the right flows on the
> right chassis
> >
> > # make sure that flows for handling the outside router port reside on
> gw2 now
> > -AT_CHECK([as gw2 ovs-ofctl dump-flows br-int table=24 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[1
> > +AT_CHECK([as gw2 ovs-ofctl dump-flows br-int table=25 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[1
> > ]])
> > -AT_CHECK([as gw1 ovs-ofctl dump-flows br-int table=24 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[0
> > +AT_CHECK([as gw1 ovs-ofctl dump-flows br-int table=25 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[0
> > ]])
> >
> > # disconnect GW2 from the network, GW1 should take over
> > @@ -9700,9 +9700,9 @@ sleep 4
> > bfd_dump
> >
> > # make sure that flows for handling the outside router port reside on
> gw2 now
> > -AT_CHECK([as gw1 ovs-ofctl dump-flows br-int table=24 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[1
> > +AT_CHECK([as gw1 ovs-ofctl dump-flows br-int table=25 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[1
> > ]])
> > -AT_CHECK([as gw2 ovs-ofctl dump-flows br-int table=24 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[0
> > +AT_CHECK([as gw2 ovs-ofctl dump-flows br-int table=25 | grep
> 00:00:02:01:02:04 | wc -l], [0], [[0
> > ]])
> >
> > # check that the chassis redirect port has been reclaimed by the gw1
> chassis
> > @@ -11619,6 +11619,524 @@ as hv2 start_daemon ovn-controller
> > OVN_CLEANUP([hv1],[hv2])
> > AT_CLEANUP
> >
> > +AT_SETUP([ovn -- external logical port])
> > +AT_SKIP_IF([test $HAVE_PYTHON = no])
> > +ovn_start
> > +
> > +net_add n1
> > +sim_add hv1
> > +sim_add hv2
> > +
> > +ovn-nbctl ls-add ls1
> > +ovn-nbctl lsp-add ls1 ls1-lp1 \
> > +-- lsp-set-addresses ls1-lp1 "f0:00:00:00:00:01 10.0.0.4 ae70::4"
> > +
> > +# Add a couple of external logical port
> > +ovn-nbctl lsp-add ls1 ls1-lp_ext1 \
> > +-- lsp-set-addresses ls1-lp_ext1 "f0:00:00:00:00:03 10.0.0.6 ae70::6"
> > +ovn-nbctl lsp-set-port-security ls1-lp_ext1 \
> > +"f0:00:00:00:00:03 10.0.0.6 ae70::6"
> > +ovn-nbctl lsp-set-type ls1-lp_ext1 external
> > +
> > +ovn-nbctl lsp-add ls1 ls1-lp_ext2 \
> > +-- lsp-set-addresses ls1-lp_ext2 "f0:00:00:00:00:04 10.0.0.7 ae70::7"
> > +ovn-nbctl lsp-set-port-security ls1-lp_ext2 \
> > +"f0:00:00:00:00:04 10.0.0.7 ae70::8"
> > +ovn-nbctl lsp-set-type ls1-lp_ext2 external
> > +
> > +d1="$(ovn-nbctl create DHCP_Options cidr=10.0.0.0/24 \
> > +options="\"server_id\"=\"10.0.0.1\"
> \"server_mac\"=\"ff:10:00:00:00:01\" \
> > +\"lease_time\"=\"3600\" \"router\"=\"10.0.0.1\"")"
> > +
> > +d2="$(ovn-nbctl create DHCP_Options cidr="ae70\:\:/64" \
> > +options="\"server_id\"=\"00:00:00:10:00:01\"")"
> > +
> > +ovn-nbctl lsp-set-dhcpv4-options ls1-lp1 ${d1}
> > +ovn-nbctl lsp-set-dhcpv4-options ls1-lp_ext1 ${d1}
> > +ovn-nbctl lsp-set-dhcpv4-options ls1-lp_ext2 ${d1}
> > +
> > +ovn-nbctl lsp-set-dhcpv6-options ls1-lp1 ${d2}
> > +ovn-nbctl lsp-set-dhcpv6-options ls1-lp_ext1 ${d2}
> > +ovn-nbctl lsp-set-dhcpv6-options ls1-lp_ext2 ${d2}
> > +
> > +# Create a logical router and connect it to ls1
> > +ovn-nbctl lr-add lr0
> > +ovn-nbctl lrp-add lr0 lr0-ls1 a0:10:00:00:00:01 10.0.0.1/24
> > +ovn-nbctl lsp-add ls1 ls1-lr0
> > +ovn-nbctl set Logical_Switch_Port ls1-lr0 type=router \
> > + options:router-port=lr0-ls1 addresses=router
> > +
> > +as hv1
> > +ovs-vsctl add-br br-phys
> > +ovn_attach n1 br-phys 192.168.0.1
> > +ovs-vsctl -- add-port br-phys hv1-ext1 -- \
> > + set interface hv1-ext1 options:tx_pcap=hv1/ext1-tx.pcap \
> > + options:rxq_pcap=hv1/ext1-rx.pcap \
> > + ofport-request=2
> > +ovs-vsctl set open . external-ids:ovn-bridge-mappings=phys:br-phys
> > +
> > +as hv2
> > +ovs-vsctl add-br br-phys
> > +ovn_attach n1 br-phys 192.168.0.2
> > +ovs-vsctl -- add-port br-phys hv2-ext2 -- \
> > + set interface hv2-ext2 options:tx_pcap=hv2/ext2-tx.pcap \
> > + options:rxq_pcap=hv2/ext2-rx.pcap \
> > + ofport-request=2
> > +ovs-vsctl set open . external-ids:ovn-bridge-mappings=phys:br-phys
> > +
> > +ovn-sbctl dump-flows > lflows_n.txt
> > +
> > +# No DHCPv4/v6 flows for the external port - ls1-lp_ext1 - 10.0.0.6 in
> hv1 and
> > +# hv2 as requested-chassis option is not set and no localnet port added
> to ls1.
> > +AT_CHECK([ovn-sbctl dump-flows ls1 | grep "offerip = 10.0.0.6" | \
> > +wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | wc -l], [0], [0
> > +])
> > +
> > +hv1_uuid=$(ovn-sbctl list chassis hv1 | grep uuid | awk '{print $3}')
> > +
> > +# The port_binding row for ls1-lp_ext1 should have empty chassis
> > +chassis=$(ovn-sbctl list port_binding ls1-lp_ext1 | grep -v gateway | \
> > +grep -v requested | grep chassis | awk '{print $3}')
> > +
> > +AT_CHECK([test $chassis == "[[]]"], [0], [])
> > +
> > +# Set the requested-chassis option for ls1-lp_ext1
> > +ovn-nbctl --wait=hv lsp-set-options ls1-lp_ext1 requested-chassis=hv1
> > +
> > +# No DHCPv4/v6 flows for the external port - ls1-lp_ext1 - 10.0.0.6 in
> hv1 and hv2
> > +# as no localnet port added to ls1 yet.
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | wc -l], [0], [0
> > +])
> > +
> > +# Add the localnet port to the logical switch ls1
> > +ovn-nbctl lsp-add ls1 ln-public
> > +ovn-nbctl lsp-set-addresses ln-public unknown
> > +ovn-nbctl lsp-set-type ln-public localnet
> > +ovn-nbctl --wait=hv lsp-set-options ln-public network_name=phys
> > +
> > +ln_public_key=$(ovn-sbctl list port_binding ln-public | grep
> tunnel_key | \
> > +awk '{print $3}')
> > +
> > +# The ls1-lp_ext1 should be bound to hv1
> > +chassis=$(ovn-sbctl list port_binding ls1-lp_ext1 | grep -v gateway | \
> > +grep -v requested | grep chassis | awk '{print $3}')
> > +AT_CHECK([test $chassis == "$hv1_uuid"], [0], [])
> > +
> > +# There should be DHCPv4/v6 OF flows for the ls1-lp_ext1 port in hv1
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | grep reg14=0x$ln_public_key | \
> > +wc -l], [0], [3
> > +])
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | \
> > +grep reg14=0x$ln_public_key | wc -l], [0], [1
> > +])
> > +
> > +# There should be no DHCPv4/v6 flows for ls1-lp_ext1 on hv2
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | wc -l], [0], [0
> > +])
> > +
> > +# No DHCPv4/v6 flows for the external port - ls1-lp_ext2 - 10.0.0.7 in
> hv1 and
> > +# hv2 as requested-chassis option is not set.
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.07" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.07" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.07" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.07" | wc -l], [0], [0
> > +])
> > +
> > +as hv1
> > +ovs-vsctl show
> > +
> > +# This shell function sends a DHCP request packet
> > +# test_dhcp INPORT SRC_MAC DHCP_TYPE OFFER_IP ...
> > +test_dhcp() {
> > + local inport=$1 src_mac=$2 dhcp_type=$3 offer_ip=$4 use_ip=$5
> > + shift; shift; shift; shift; shift;
> > + if test $use_ip != 0; then
> > + src_ip=$1
> > + dst_ip=$2
> > + shift; shift;
> > + else
> > + src_ip=`ip_to_hex 0 0 0 0`
> > + dst_ip=`ip_to_hex 255 255 255 255`
> > + fi
> > + local
> request=ffffffffffff${src_mac}0800451001100000000080110000${src_ip}${dst_ip}
> > + # udp header and dhcp header
> > + request=${request}0044004300fc0000
> > +
> request=${request}010106006359aa760000000000000000000000000000000000000000${src_mac}
> > + # client hardware padding
> > + request=${request}00000000000000000000
> > + # server hostname
> > +
> request=${request}0000000000000000000000000000000000000000000000000000000000000000
> > +
> request=${request}0000000000000000000000000000000000000000000000000000000000000000
> > + # boot file name
> > +
> request=${request}0000000000000000000000000000000000000000000000000000000000000000
> > +
> request=${request}0000000000000000000000000000000000000000000000000000000000000000
> > +
> request=${request}0000000000000000000000000000000000000000000000000000000000000000
> > +
> request=${request}0000000000000000000000000000000000000000000000000000000000000000
> > + # dhcp magic cookie
> > + request=${request}63825363
> > + # dhcp message type
> > + request=${request}3501${dhcp_type}ff
> > +
> > + local srv_mac=$1 srv_ip=$2 expected_dhcp_opts=$3
> > + # total IP length will be the IP length of the request packet
> > + # (which is 272 in our case) + 8 (padding bytes) +
> (expected_dhcp_opts / 2)
> > + ip_len=`expr 280 + ${#expected_dhcp_opts} / 2`
> > + udp_len=`expr $ip_len - 20`
> > + ip_len=$(printf "%x" $ip_len)
> > + udp_len=$(printf "%x" $udp_len)
> > + # $ip_len var will be in 3 digits i.e 134. So adding a '0' before
> $ip_len
> > + local
> reply=${src_mac}${srv_mac}080045100${ip_len}000000008011XXXX${srv_ip}${offer_ip}
> > + # udp header and dhcp header.
> > + # $udp_len var will be in 3 digits. So adding a '0' before $udp_len
> > +
> reply=${reply}004300440${udp_len}0000020106006359aa760000000000000000
> > + # your ip address
> > + reply=${reply}${offer_ip}
> > + # next server ip address, relay agent ip address, client mac address
> > + reply=${reply}0000000000000000${src_mac}
> > + # client hardware padding
> > + reply=${reply}00000000000000000000
> > + # server hostname
> > +
> reply=${reply}0000000000000000000000000000000000000000000000000000000000000000
> > +
> reply=${reply}0000000000000000000000000000000000000000000000000000000000000000
> > + # boot file name
> > +
> reply=${reply}0000000000000000000000000000000000000000000000000000000000000000
> > +
> reply=${reply}0000000000000000000000000000000000000000000000000000000000000000
> > +
> reply=${reply}0000000000000000000000000000000000000000000000000000000000000000
> > +
> reply=${reply}0000000000000000000000000000000000000000000000000000000000000000
> > + # dhcp magic cookie
> > + reply=${reply}63825363
> > + # dhcp message type
> > + local dhcp_reply_type=02
> > + if test $dhcp_type = 03; then
> > + dhcp_reply_type=05
> > + fi
> > +
> reply=${reply}3501${dhcp_reply_type}${expected_dhcp_opts}00000000ff00000000
> > + echo $reply >> ext1_v4.expected
> > +
> > + as hv1 ovs-appctl netdev-dummy/receive hv${inport}-ext${inport}
> $request
> > +}
> > +
> > +
> > +trim_zeros() {
> > + sed 's/\(00\)\{1,\}$//'
> > +}
> > +
> > +# This shell function sends a DHCPv6 request packet
> > +# test_dhcpv6 INPORT SRC_MAC SRC_LLA DHCPv6_MSG_TYPE OFFER_IP OUTPORT...
> > +# The OUTPORTs (zero or more) list the VIFs on which the original DHCPv6
> > +# packet should be received twice (one from ovn-controller and the other
> > +# from the "ovs-ofctl monitor br-int resume"
> > +test_dhcpv6() {
> > + local inport=$1 src_mac=$2 src_lla=$3 msg_code=$4 offer_ip=$5
> > + local req_pkt_in_expected=$6
> > + local request=ffffffffffff${src_mac}86dd00000000002a1101${src_lla}
> > + # dst ip ff02::1:2
> > + request=${request}ff020000000000000000000000010002
> > + # udp header and dhcpv6 header
> > + request=${request}02220223002affff${msg_code}010203
> > + # Client identifier
> > + request=${request}0001000a00030001${src_mac}
> > + # IA-NA (Identity Association for Non Temporary Address)
> > + request=${request}0003000c0102030400000e1000001518
> > + shift; shift; shift; shift; shift;
> > +
> > + local server_mac=000000100001
> > + local server_lla=fe80000000000000020000fffe100001
> > + local reply_code=07
> > + if test $msg_code = 01; then
> > + reply_code=02
> > + fi
> > + local msg_len=54
> > + if test $offer_ip = 1; then
> > + msg_len=28
> > + fi
> > + local reply=${src_mac}${server_mac}86dd0000000000${msg_len}1101
> > + reply=${reply}${server_lla}${src_lla}
> > +
> > + # udp header and dhcpv6 header
> > + reply=${reply}0223022200${msg_len}ffff${reply_code}010203
> > + # Client identifier
> > + reply=${reply}0001000a00030001${src_mac}
> > + # IA-NA
> > + if test $offer_ip != 1; then
> > +
> reply=${reply}0003002801020304ffffffffffffffff00050018${offer_ip}
> > + reply=${reply}ffffffffffffffff
> > + fi
> > + # Server identifier
> > + reply=${reply}0002000a00030001${server_mac}
> > +
> > + echo $reply | trim_zeros >> ext${inport}_v6.expected
> > + # The inport also receives the request packet since it is connected
> > + # to the br-phys.
> > + #echo $request >> ext${inport}_v6.expected
> > +
> > + as hv1 ovs-appctl netdev-dummy/receive hv${inport}-ext${inport}
> $request
> > +}
> > +
> > +reset_pcap_file() {
> > + local iface=$1
> > + local pcap_file=$2
> > + ovs-vsctl -- set Interface $iface options:tx_pcap=dummy-tx.pcap \
> > +options:rxq_pcap=dummy-rx.pcap
> > + rm -f ${pcap_file}*.pcap
> > + ovs-vsctl -- set Interface $iface
> options:tx_pcap=${pcap_file}-tx.pcap \
> > +options:rxq_pcap=${pcap_file}-rx.pcap
> > +}
> > +
> > +ip_to_hex() {
> > + printf "%02x%02x%02x%02x" "$@"
> > +}
> > +
> > +AT_CAPTURE_FILE([ofctl_monitor0_hv1.log])
> > +as hv1 ovs-ofctl monitor br-int resume --detach --no-chdir \
> > +--pidfile=ovs-ofctl0.pid 2> ofctl_monitor0_hv1.log
> > +
> > +AT_CAPTURE_FILE([ofctl_monitor0_hv2.log])
> > +as hv2 ovs-ofctl monitor br-int resume --detach --no-chdir \
> > +--pidfile=ovs-ofctl0.pid 2> ofctl_monitor0_hv2.log
> > +
> > +# Send DHCPDISCOVER.
> > +offer_ip=`ip_to_hex 10 0 0 6`
> > +server_ip=`ip_to_hex 10 0 0 1`
> > +server_mac=ff1000000001
> > +expected_dhcp_opts=330400000e100104ffffff0003040a00000136040a000001
> > +test_dhcp 1 f00000000003 01 $offer_ip 0 $server_mac $server_ip \
> > +$expected_dhcp_opts
> > +
> > +# NXT_RESUMEs should be 1 in hv1.
> > +OVS_WAIT_UNTIL([test 1 = `cat ofctl_monitor0_hv1.log | grep -c
> NXT_RESUME`])
> > +
> > +# NXT_RESUMEs should be 0 in hv2.
> > +OVS_WAIT_UNTIL([test 0 = `cat ofctl_monitor0_hv2.log | grep -c
> NXT_RESUME`])
> > +
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv1/ext1-tx.pcap >
> ext1_v4.packets
> > +cat ext1_v4.expected | cut -c -48 > expout
> > +AT_CHECK([cat ext1_v4.packets | cut -c -48], [0], [expout])
> > +# Skipping the IPv4 checksum.
> > +cat ext1_v4.expected | cut -c 53- > expout
> > +AT_CHECK([cat ext1_v4.packets | cut -c 53-], [0], [expout])
> > +
> > +# ovs-ofctl also resumes the packets and this causes other ports to
> receive
> > +# the DHCP request packet. So reset the pcap files so that its easier
> to test.
> > +reset_pcap_file hv1-ext1 hv1/ext1
> > +rm -f ext1_v4.expected
> > +rm -f ext1_v4.packets
> > +
> > +# Send DHCPv6 request
> > +src_mac=f00000000003
> > +src_lla=fe80000000000000f20000fffe000003
> > +offer_ip=ae700000000000000000000000000006
> > +test_dhcpv6 1 $src_mac $src_lla 01 $offer_ip
> > +
> > +# NXT_RESUMEs should be 2 in hv1.
> > +OVS_WAIT_UNTIL([test 2 = `cat ofctl_monitor0_hv1.log | grep -c
> NXT_RESUME`])
> > +
> > +# NXT_RESUMEs should be 0 in hv2.
> > +OVS_WAIT_UNTIL([test 0 = `cat ofctl_monitor0_hv2.log | grep -c
> NXT_RESUME`])
> > +
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv1/ext1-tx.pcap | \
> > +sort > ext1_v6.packets
> > +cat ext1_v6.expected | cut -c -120 > expout
> > +AT_CHECK([cat ext1_v6.packets | cut -c -120], [0], [expout])
> > +# Skipping the UDP checksum
> > +cat ext1_v6.expected | cut -c 125- > expout
> > +AT_CHECK([cat ext1_v6.packets | cut -c 125-], [0], [expout])
> > +
> > +rm -f ext1_v6.expected
> > +rm -f ext1_v6.packets
> > +reset_pcap_file hv1-ext1 hv1/ext1
> > +
> > +# Change the requested-chassis option for ls1-lp_ext1 from hv1 to hv2
> > +ovn-nbctl --wait=hv lsp-set-options ls1-lp_ext1 requested-chassis=hv2
> > +
> > +hv2_uuid=$(ovn-sbctl list chassis hv2 | grep uuid | awk '{print $3}')
> > +
> > +# The ls1-lp_ext1 should be bound to hv2
> > +chassis=$(ovn-sbctl list port_binding ls1-lp_ext1 | grep -v gateway | \
> > +grep -v requested | grep chassis | awk '{print $3}')
> > +AT_CHECK([test $chassis == "$hv2_uuid"], [0], [])
> > +
> > +# There should be OF flows for DHCP4/v6 for the ls1-lp_ext1 port in hv2
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | grep reg14=0x$ln_public_key | \
> > +wc -l], [0], [3
> > +])
> > +AT_CHECK([as hv2 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | \
> > +grep reg14=0x$ln_public_key | wc -l], [0], [1
> > +])
> > +
> > +# There should be no DHCPv4/v6 flows for ls1-lp_ext1 on hv1
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep "0a.00.00.06" | wc -l], [0], [0
> > +])
> > +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep table=20 | \
> > +grep controller | grep tp_src=546 | grep \
> > +"ae.70.00.00.00.00.00.00.00.00.00.00.00.00.00.06" | \
> > +grep reg14=0x$ln_public_key | wc -l], [0], [0
> > +])
> > +
> > +# Send DHCPDISCOVER again for hv1/ext1. The DHCP response should come
> from
> > +# hv2 ovn-controller. Due to the test setup, the port hv1/ext1 is also
> > +# receiving the expected packet.
> > +offer_ip=`ip_to_hex 10 0 0 6`
> > +server_ip=`ip_to_hex 10 0 0 1`
> > +server_mac=ff1000000001
> > +expected_dhcp_opts=330400000e100104ffffff0003040a00000136040a000001
> > +test_dhcp 1 f00000000003 01 $offer_ip 0 $server_mac $server_ip \
> > +$expected_dhcp_opts
> > +
> > +# NXT_RESUMEs should be 2 in hv1.
> > +OVS_WAIT_UNTIL([test 2 = `cat ofctl_monitor0_hv1.log | grep -c
> NXT_RESUME`])
> > +
> > +# NXT_RESUMEs should be 1 in hv2.
> > +OVS_WAIT_UNTIL([test 1 = `cat ofctl_monitor0_hv2.log | grep -c
> NXT_RESUME`])
> > +
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv1/ext1-tx.pcap >
> ext1_v4.packets
> > +cat ext1_v4.expected | cut -c -48 > expout
> > +AT_CHECK([cat ext1_v4.packets | cut -c -48], [0], [expout])
> > +# Skipping the IPv4 checksum.
> > +cat ext1_v4.expected | cut -c 53- > expout
> > +AT_CHECK([cat ext1_v4.packets | cut -c 53-], [0], [expout])
> > +
> > +# ovs-ofctl also resumes the packets and this causes other ports to
> receive
> > +# the DHCP request packet. So reset the pcap files so that its easier
> to test.
> > +reset_pcap_file hv1-ext1 hv1/ext1
> > +rm -f ext1_v4.expected
> > +
> > +# Send DHCPv6 request again
> > +src_mac=f00000000003
> > +src_lla=fe80000000000000f20000fffe000003
> > +offer_ip=ae700000000000000000000000000006
> > +test_dhcpv6 1 $src_mac $src_lla 01 $offer_ip 1
> > +
> > +# NXT_RESUMEs should be 2 in hv1.
> > +OVS_WAIT_UNTIL([test 2 = `cat ofctl_monitor0_hv1.log | grep -c
> NXT_RESUME`])
> > +
> > +# NXT_RESUMEs should be 2 in hv2.
> > +OVS_WAIT_UNTIL([test 2 = `cat ofctl_monitor0_hv2.log | grep -c
> NXT_RESUME`])
> > +
> > +as hv1
> > +ovs-vsctl show
> > +ovs-ofctl dump-flows br-int
> > +
> > +as hv2
> > +ovs-vsctl show
> > +ovs-ofctl dump-flows br-int
> > +
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv1/ext1-tx.pcap | \
> > +sort > ext1_v6.packets
> > +cat ext1_v6.expected | cut -c -120 > expout
> > +AT_CHECK([cat ext1_v6.packets | cut -c -120], [0], [expout])
> > +# Skipping the UDP checksum
> > +cat ext1_v6.expected | cut -c 125- > expout
> > +AT_CHECK([cat ext1_v6.packets | cut -c 125-], [0], [expout])
> > +
> > +rm -f ext1_v6.expected
> > +rm -f ext1_v6.packets
> > +
> > +as hv1
> > +ovs-vsctl show
> > +reset_pcap_file hv1-ext1 hv1/ext1
> > +reset_pcap_file br-phys_n1 hv1/br-phys_n1
> > +reset_pcap_file br-phys hv1/br-phys
> > +
> > +as hv2
> > +ovs-vsctl show
> > +reset_pcap_file hv2-ext2 hv2/ext2
> > +reset_pcap_file br-phys_n1 hv2/br-phys_n1
> > +reset_pcap_file br-phys hv2/br-phys
> > +
> > +# From ls1-lp_ext1, send ARP request for the router ip. The ARP
> > +# response should come from the router pipeline of hv2.
> > +ext1_mac=f00000000003
> > +router_mac=a01000000001
> > +ext1_ip=`ip_to_hex 10 0 0 6`
> > +router_ip=`ip_to_hex 10 0 0 1`
> >
> +arp_request=ffffffffffff${ext1_mac}08060001080006040001${ext1_mac}${ext1_ip}000000000000${router_ip}
> > +
> > +as hv1 ovs-appctl netdev-dummy/receive hv1-ext1 $arp_request
> >
> +expected_response=${src_mac}${router_mac}08060001080006040002${router_mac}${router_ip}${ext1_mac}${ext1_ip}
> > +echo $expected_response > expout
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv1/ext1-tx.pcap >
> ext1_arp_resp
> > +AT_CHECK([cat ext1_arp_resp], [0], [expout])
> > +
> > +# Verify that the response came from hv2
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv2/br-phys_n1-tx.pcap >
> ext1_arp_resp
> > +AT_CHECK([cat ext1_arp_resp], [0], [expout])
> > +
> > +
> > +# # Change the requested-chassis option for ls1-lp_ext1 from hv2 to hv1
> > +ovn-nbctl --wait=hv lsp-set-options ls1-lp_ext1 requested-chassis=hv1
> > +
> > +as hv1
> > +ovs-vsctl show
> > +reset_pcap_file hv1-ext1 hv1/ext1
> > +reset_pcap_file br-phys_n1 hv1/br-phys_n1
> > +reset_pcap_file br-phys hv1/br-phys
> > +
> > +as hv2
> > +ovs-vsctl show
> > +reset_pcap_file hv2-ext2 hv2/ext2
> > +reset_pcap_file br-phys_n1 hv2/br-phys_n1
> > +reset_pcap_file br-phys hv2/br-phys
> > +
> > +as hv1 ovs-appctl netdev-dummy/receive hv1-ext1 $arp_request
> > +
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv1/ext1-tx.pcap >
> ext1_arp_resp
> > +AT_CHECK([cat ext1_arp_resp], [0], [expout])
> > +
> > +# Verify that the response didn't come from hv2
> > +$PYTHON "$top_srcdir/utilities/ovs-pcap.in" hv2/br-phys_n1-tx.pcap >
> ext1_arp_resp
> > +AT_CHECK([cat ext1_arp_resp], [0], [])
> > +
> > +OVN_CLEANUP([hv1],[hv2])
> > +AT_CLEANUP
> > +
> > AT_SETUP([ovn -- ovn-controller restart])
> > AT_SKIP_IF([test $HAVE_PYTHON = no])
> > ovn_start
> > --
> > 2.20.1
> >
> > _______________________________________________
> > dev mailing list
> > [email protected]
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>
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