1 /* Copyright (c) 2015 Nicira, Inc.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
19 #include "lib/bitmap.h"
23 #include "lib/vswitch-idl.h"
24 #include "openvswitch/vlog.h"
25 #include "ovn/lib/ovn-sb-idl.h"
26 #include "ovn-controller.h"
28 VLOG_DEFINE_THIS_MODULE(binding);
31 binding_register_ovs_idl(struct ovsdb_idl *ovs_idl)
33 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_open_vswitch);
34 ovsdb_idl_add_column(ovs_idl, &ovsrec_open_vswitch_col_bridges);
36 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_bridge);
37 ovsdb_idl_add_column(ovs_idl, &ovsrec_bridge_col_name);
38 ovsdb_idl_add_column(ovs_idl, &ovsrec_bridge_col_ports);
40 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_port);
41 ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_name);
42 ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_interfaces);
44 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_interface);
45 ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_name);
46 ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_external_ids);
50 get_local_iface_ids(const struct ovsrec_bridge *br_int, struct sset *lports)
54 for (i = 0; i < br_int->n_ports; i++) {
55 const struct ovsrec_port *port_rec = br_int->ports[i];
59 if (!strcmp(port_rec->name, br_int->name)) {
63 for (j = 0; j < port_rec->n_interfaces; j++) {
64 const struct ovsrec_interface *iface_rec;
66 iface_rec = port_rec->interfaces[j];
67 iface_id = smap_get(&iface_rec->external_ids, "iface-id");
71 sset_add(lports, iface_id);
77 update_ct_zones(struct sset *lports, struct simap *ct_zones,
78 unsigned long *ct_zone_bitmap)
80 struct simap_node *ct_zone, *ct_zone_next;
84 /* xxx This is wasteful to assign a zone to each port--even if no
85 * xxx security policy is applied. */
87 /* Delete any zones that are associated with removed ports. */
88 SIMAP_FOR_EACH_SAFE(ct_zone, ct_zone_next, ct_zones) {
89 if (!sset_contains(lports, ct_zone->name)) {
90 bitmap_set0(ct_zone_bitmap, ct_zone->data);
91 simap_delete(ct_zones, ct_zone);
95 /* Assign a unique zone id for each logical port. */
96 SSET_FOR_EACH(iface_id, lports) {
99 if (simap_contains(ct_zones, iface_id)) {
103 /* We assume that there are 64K zones and that we own them all. */
104 zone = bitmap_scan(ct_zone_bitmap, 0, scan_start, MAX_CT_ZONES + 1);
105 if (zone == MAX_CT_ZONES + 1) {
106 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
107 VLOG_WARN_RL(&rl, "exhausted all ct zones");
110 scan_start = zone + 1;
112 bitmap_set1(ct_zone_bitmap, zone);
113 simap_put(ct_zones, iface_id, zone);
115 /* xxx We should erase any old entries for this
116 * xxx zone, but we need a generic interface to the conntrack
122 add_local_datapath(struct hmap *local_datapaths,
123 const struct sbrec_port_binding *binding_rec)
125 struct hmap_node *ld;
126 ld = hmap_first_with_hash(local_datapaths,
127 binding_rec->datapath->tunnel_key);
129 ld = xmalloc(sizeof *ld);
130 hmap_insert(local_datapaths, ld,
131 binding_rec->datapath->tunnel_key);
136 binding_run(struct controller_ctx *ctx, const struct ovsrec_bridge *br_int,
137 const char *chassis_id, struct simap *ct_zones,
138 unsigned long *ct_zone_bitmap, struct hmap *local_datapaths)
140 const struct sbrec_chassis *chassis_rec;
141 const struct sbrec_port_binding *binding_rec;
142 struct sset lports, all_lports;
145 if (!ctx->ovnsb_idl_txn) {
149 chassis_rec = get_chassis(ctx->ovnsb_idl, chassis_id);
155 sset_init(&all_lports);
157 get_local_iface_ids(br_int, &lports);
159 /* We have no integration bridge, therefore no local logical ports.
160 * We'll remove our chassis from all port binding records below. */
162 sset_clone(&all_lports, &lports);
164 ovsdb_idl_txn_add_comment(
165 ctx->ovnsb_idl_txn,"ovn-controller: updating port bindings for '%s'",
168 /* Run through each binding record to see if it is resident on this
169 * chassis and update the binding accordingly. This includes both
170 * directly connected logical ports and children of those ports. */
171 SBREC_PORT_BINDING_FOR_EACH(binding_rec, ctx->ovnsb_idl) {
172 if (sset_find_and_delete(&lports, binding_rec->logical_port) ||
173 (binding_rec->parent_port && binding_rec->parent_port[0] &&
174 sset_contains(&all_lports, binding_rec->parent_port))) {
175 if (binding_rec->parent_port && binding_rec->parent_port[0]) {
176 /* Add child logical port to the set of all local ports. */
177 sset_add(&all_lports, binding_rec->logical_port);
179 add_local_datapath(local_datapaths, binding_rec);
180 if (binding_rec->chassis == chassis_rec) {
183 if (binding_rec->chassis) {
184 VLOG_INFO("Changing chassis for lport %s from %s to %s",
185 binding_rec->logical_port,
186 binding_rec->chassis->name,
189 sbrec_port_binding_set_chassis(binding_rec, chassis_rec);
190 } else if (binding_rec->chassis == chassis_rec) {
191 sbrec_port_binding_set_chassis(binding_rec, NULL);
192 } else if (!binding_rec->chassis
193 && !strcmp(binding_rec->type, "localnet")) {
194 /* localnet ports will never be bound to a chassis, but we want
195 * to list them in all_lports because we want to allocate
196 * a conntrack zone ID for each one, as we'll be creating
197 * a patch port for each one. */
198 sset_add(&all_lports, binding_rec->logical_port);
202 SSET_FOR_EACH (name, &lports) {
203 VLOG_DBG("No port binding record for lport %s", name);
206 update_ct_zones(&all_lports, ct_zones, ct_zone_bitmap);
208 sset_destroy(&lports);
209 sset_destroy(&all_lports);
212 /* Returns true if the database is all cleaned up, false if more work is
215 binding_cleanup(struct controller_ctx *ctx, const char *chassis_id)
217 if (!ctx->ovnsb_idl_txn) {
225 const struct sbrec_chassis *chassis_rec
226 = get_chassis(ctx->ovnsb_idl, chassis_id);
231 ovsdb_idl_txn_add_comment(
233 "ovn-controller: removing all port bindings for '%s'", chassis_id);
235 const struct sbrec_port_binding *binding_rec;
236 bool any_changes = false;
237 SBREC_PORT_BINDING_FOR_EACH(binding_rec, ctx->ovnsb_idl) {
238 if (binding_rec->chassis == chassis_rec) {
239 sbrec_port_binding_set_chassis(binding_rec, NULL);