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"
22 #include "lib/vswitch-idl.h"
23 #include "openvswitch/vlog.h"
24 #include "ovn/lib/ovn-sb-idl.h"
25 #include "ovn-controller.h"
27 VLOG_DEFINE_THIS_MODULE(binding);
30 binding_register_ovs_idl(struct ovsdb_idl *ovs_idl)
32 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_open_vswitch);
33 ovsdb_idl_add_column(ovs_idl, &ovsrec_open_vswitch_col_bridges);
35 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_bridge);
36 ovsdb_idl_add_column(ovs_idl, &ovsrec_bridge_col_name);
37 ovsdb_idl_add_column(ovs_idl, &ovsrec_bridge_col_ports);
39 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_port);
40 ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_name);
41 ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_interfaces);
43 ovsdb_idl_add_table(ovs_idl, &ovsrec_table_interface);
44 ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_name);
45 ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_external_ids);
49 get_local_iface_ids(const struct ovsrec_bridge *br_int, struct sset *lports)
53 for (i = 0; i < br_int->n_ports; i++) {
54 const struct ovsrec_port *port_rec = br_int->ports[i];
58 if (!strcmp(port_rec->name, br_int->name)) {
62 for (j = 0; j < port_rec->n_interfaces; j++) {
63 const struct ovsrec_interface *iface_rec;
65 iface_rec = port_rec->interfaces[j];
66 iface_id = smap_get(&iface_rec->external_ids, "iface-id");
70 sset_add(lports, iface_id);
76 update_ct_zones(struct sset *lports, struct simap *ct_zones,
77 unsigned long *ct_zone_bitmap)
79 struct simap_node *ct_zone, *ct_zone_next;
83 /* xxx This is wasteful to assign a zone to each port--even if no
84 * xxx security policy is applied. */
86 /* Delete any zones that are associated with removed ports. */
87 SIMAP_FOR_EACH_SAFE(ct_zone, ct_zone_next, ct_zones) {
88 if (!sset_contains(lports, ct_zone->name)) {
89 bitmap_set0(ct_zone_bitmap, ct_zone->data);
90 simap_delete(ct_zones, ct_zone);
94 /* Assign a unique zone id for each logical port. */
95 SSET_FOR_EACH(iface_id, lports) {
98 if (simap_contains(ct_zones, iface_id)) {
102 /* We assume that there are 64K zones and that we own them all. */
103 zone = bitmap_scan(ct_zone_bitmap, 0, scan_start, MAX_CT_ZONES + 1);
104 if (zone == MAX_CT_ZONES + 1) {
105 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
106 VLOG_WARN_RL(&rl, "exhausted all ct zones");
109 scan_start = zone + 1;
111 bitmap_set1(ct_zone_bitmap, zone);
112 simap_put(ct_zones, iface_id, zone);
114 /* xxx We should erase any old entries for this
115 * xxx zone, but we need a generic interface to the conntrack
121 binding_run(struct controller_ctx *ctx, const struct ovsrec_bridge *br_int,
122 const char *chassis_id, struct simap *ct_zones,
123 unsigned long *ct_zone_bitmap)
125 const struct sbrec_chassis *chassis_rec;
126 const struct sbrec_port_binding *binding_rec;
127 struct sset lports, all_lports;
130 if (!ctx->ovnsb_idl_txn) {
134 chassis_rec = get_chassis(ctx->ovnsb_idl, chassis_id);
140 sset_init(&all_lports);
142 get_local_iface_ids(br_int, &lports);
144 /* We have no integration bridge, therefore no local logical ports.
145 * We'll remove our chassis from all port binding records below. */
147 sset_clone(&all_lports, &lports);
149 ovsdb_idl_txn_add_comment(
150 ctx->ovnsb_idl_txn,"ovn-controller: updating port bindings for '%s'",
153 /* Run through each binding record to see if it is resident on this
154 * chassis and update the binding accordingly. This includes both
155 * directly connected logical ports and children of those ports. */
156 SBREC_PORT_BINDING_FOR_EACH(binding_rec, ctx->ovnsb_idl) {
157 if (sset_find_and_delete(&lports, binding_rec->logical_port) ||
158 (binding_rec->parent_port && binding_rec->parent_port[0] &&
159 sset_contains(&all_lports, binding_rec->parent_port))) {
160 if (binding_rec->parent_port && binding_rec->parent_port[0]) {
161 /* Add child logical port to the set of all local ports. */
162 sset_add(&all_lports, binding_rec->logical_port);
164 if (binding_rec->chassis == chassis_rec) {
167 if (binding_rec->chassis) {
168 VLOG_INFO("Changing chassis for lport %s from %s to %s",
169 binding_rec->logical_port,
170 binding_rec->chassis->name,
173 sbrec_port_binding_set_chassis(binding_rec, chassis_rec);
174 } else if (binding_rec->chassis == chassis_rec) {
175 sbrec_port_binding_set_chassis(binding_rec, NULL);
179 SSET_FOR_EACH (name, &lports) {
180 VLOG_DBG("No port binding record for lport %s", name);
183 update_ct_zones(&all_lports, ct_zones, ct_zone_bitmap);
185 sset_destroy(&lports);
186 sset_destroy(&all_lports);
189 /* Returns true if the database is all cleaned up, false if more work is
192 binding_cleanup(struct controller_ctx *ctx, const char *chassis_id)
194 if (!ctx->ovnsb_idl_txn) {
202 const struct sbrec_chassis *chassis_rec
203 = get_chassis(ctx->ovnsb_idl, chassis_id);
208 ovsdb_idl_txn_add_comment(
210 "ovn-controller: removing all port bindings for '%s'", chassis_id);
212 const struct sbrec_port_binding *binding_rec;
213 bool any_changes = false;
214 SBREC_PORT_BINDING_FOR_EACH(binding_rec, ctx->ovnsb_idl) {
215 if (binding_rec->chassis == chassis_rec) {
216 sbrec_port_binding_set_chassis(binding_rec, NULL);