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chassis.c
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chassis.c
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/* Copyright (c) 2015, 2016 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <unistd.h>
#include "chassis.h"
#include "lib/smap.h"
#include "lib/sset.h"
#include "lib/vswitch-idl.h"
#include "openvswitch/dynamic-string.h"
#include "openvswitch/vlog.h"
#include "openvswitch/ofp-parse.h"
#include "lib/chassis-index.h"
#include "lib/ovn-sb-idl.h"
#include "ovn-controller.h"
#include "lib/util.h"
#include "ovn/features.h"
VLOG_DEFINE_THIS_MODULE(chassis);
#ifndef HOST_NAME_MAX
/* For windows. */
#define HOST_NAME_MAX 255
#endif /* HOST_NAME_MAX */
char *cli_system_id = NULL;
char *file_system_id = NULL;
/*
* Structure for storing the chassis config parsed from the ovs table.
*/
struct ovs_chassis_cfg {
/* Single string fields parsed from external-ids. */
const char *hostname;
const char *bridge_mappings;
const char *datapath_type;
const char *encap_csum;
const char *cms_options;
const char *monitor_all;
const char *chassis_macs;
const char *enable_lflow_cache;
const char *limit_lflow_cache;
const char *memlimit_lflow_cache;
const char *trim_limit_lflow_cache;
const char *trim_wmark_perc_lflow_cache;
const char *trim_timeout_ms;
/* Set of encap types parsed from the 'ovn-encap-type' external-id. */
struct sset encap_type_set;
/* Set of encap IPs parsed from the 'ovn-encap-type' external-id. */
struct sset encap_ip_set;
/* Interface type list formatted in the OVN-SB Chassis required format. */
struct ds iface_types;
/* Is this chassis an interconnection gateway. */
bool is_interconn;
};
static void
ovs_chassis_cfg_init(struct ovs_chassis_cfg *cfg)
{
sset_init(&cfg->encap_type_set);
sset_init(&cfg->encap_ip_set);
ds_init(&cfg->iface_types);
}
static void
ovs_chassis_cfg_destroy(struct ovs_chassis_cfg *cfg)
{
sset_destroy(&cfg->encap_type_set);
sset_destroy(&cfg->encap_ip_set);
ds_destroy(&cfg->iface_types);
}
void
chassis_register_ovs_idl(struct ovsdb_idl *ovs_idl)
{
ovsdb_idl_add_table(ovs_idl, &ovsrec_table_open_vswitch);
ovsdb_idl_add_column(ovs_idl, &ovsrec_open_vswitch_col_external_ids);
ovsdb_idl_add_column(ovs_idl, &ovsrec_open_vswitch_col_iface_types);
ovsdb_idl_add_table(ovs_idl, &ovsrec_table_bridge);
ovsdb_idl_add_column(ovs_idl, &ovsrec_bridge_col_datapath_type);
}
static const char *
get_hostname(const struct smap *ext_ids, const char *chassis_id)
{
const char *hostname = get_chassis_external_id_value(ext_ids, chassis_id,
"hostname", NULL);
if (!hostname) {
static char hostname_[HOST_NAME_MAX + 1];
if (gethostname(hostname_, sizeof(hostname_))) {
hostname_[0] = 0;
}
return &hostname_[0];
}
return hostname;
}
static const char *
get_bridge_mappings(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-bridge-mappings", "");
}
const char *
get_chassis_mac_mappings(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-chassis-mac-mappings", "");
}
static const char *
get_cms_options(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-cms-options", "");
}
static const char *
get_monitor_all(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-monitor-all", "false");
}
static const char *
get_enable_lflow_cache(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-enable-lflow-cache", "true");
}
static const char *
get_limit_lflow_cache(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-limit-lflow-cache", "");
}
static const char *
get_memlimit_lflow_cache(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-memlimit-lflow-cache-kb", "");
}
static const char *
get_trim_limit_lflow_cache(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-trim-limit-lflow-cache", "");
}
static const char *
get_trim_wmark_perc_lflow_cache(const struct smap *ext_ids,
const char *chassis_id)
{
return get_chassis_external_id_value(
ext_ids, chassis_id, "ovn-trim-wmark-perc-lflow-cache", "");
}
static const char *
get_trim_timeout(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-trim-timeout-ms", "");
}
static const char *
get_encap_csum(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value(ext_ids, chassis_id,
"ovn-encap-csum", "true");
}
static const char *
get_datapath_type(const struct ovsrec_bridge *br_int)
{
if (br_int && br_int->datapath_type) {
return br_int->datapath_type;
}
return "";
}
static bool
get_is_interconn(const struct smap *ext_ids, const char *chassis_id)
{
return get_chassis_external_id_value_bool(ext_ids, chassis_id,
"ovn-is-interconn", false);
}
static void
update_chassis_transport_zones(const struct sset *transport_zones,
const struct sbrec_chassis *chassis_rec)
{
struct sset chassis_tzones_set = SSET_INITIALIZER(&chassis_tzones_set);
for (int i = 0; i < chassis_rec->n_transport_zones; i++) {
sset_add(&chassis_tzones_set, chassis_rec->transport_zones[i]);
}
/* Only update the transport zones if something changed */
if (!sset_equals(transport_zones, &chassis_tzones_set)) {
const char **ls_arr = sset_array(transport_zones);
sbrec_chassis_set_transport_zones(chassis_rec, ls_arr,
sset_count(transport_zones));
free(ls_arr);
}
sset_destroy(&chassis_tzones_set);
}
/*
* Parse an ovs 'encap_type' string and stores the resulting types in the
* 'encap_type_set' string set.
*/
static void
chassis_parse_ovs_encap_type(const char *encap_type,
struct sset *encap_type_set)
{
sset_from_delimited_string(encap_type_set, encap_type, ",");
const char *type;
SSET_FOR_EACH (type, encap_type_set) {
if (!get_tunnel_type(type)) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
VLOG_INFO_RL(&rl, "Unknown tunnel type: %s", type);
}
}
}
/*
* Parse an ovs 'encap_ip' string and stores the resulting IP representations
* in the 'encap_ip_set' string set.
*/
static void
chassis_parse_ovs_encap_ip(const char *encap_ip, struct sset *encap_ip_set)
{
sset_from_delimited_string(encap_ip_set, encap_ip, ",");
}
/*
* Parse the ovs 'iface_types' and store them in the format required by the
* Chassis record.
*/
static void
chassis_parse_ovs_iface_types(char **iface_types, size_t n_iface_types,
struct ds *iface_types_str)
{
for (size_t i = 0; i < n_iface_types; i++) {
ds_put_format(iface_types_str, "%s,", iface_types[i]);
}
ds_chomp(iface_types_str, ',');
}
/*
* Parse the 'ovs_table' entry and populate 'ovs_cfg'.
*/
static bool
chassis_parse_ovs_config(const struct ovsrec_open_vswitch_table *ovs_table,
const struct ovsrec_bridge *br_int,
struct ovs_chassis_cfg *ovs_cfg)
{
const struct ovsrec_open_vswitch *cfg =
ovsrec_open_vswitch_table_first(ovs_table);
if (!cfg) {
VLOG_INFO("No Open_vSwitch row defined.");
return false;
}
const char *chassis_id = get_ovs_chassis_id(ovs_table);
const char *encap_type =
get_chassis_external_id_value(&cfg->external_ids, chassis_id,
"ovn-encap-type", NULL);
const char *encap_ips =
get_chassis_external_id_value(&cfg->external_ids, chassis_id,
"ovn-encap-ip", NULL);
if (!encap_type || !encap_ips) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
VLOG_INFO_RL(&rl, "Need to specify an encap type and ip");
return false;
}
ovs_cfg->hostname = get_hostname(&cfg->external_ids, chassis_id);
ovs_cfg->bridge_mappings =
get_bridge_mappings(&cfg->external_ids, chassis_id);
ovs_cfg->datapath_type = get_datapath_type(br_int);
ovs_cfg->encap_csum = get_encap_csum(&cfg->external_ids, chassis_id);
ovs_cfg->cms_options = get_cms_options(&cfg->external_ids, chassis_id);
ovs_cfg->monitor_all = get_monitor_all(&cfg->external_ids, chassis_id);
ovs_cfg->chassis_macs =
get_chassis_mac_mappings(&cfg->external_ids, chassis_id);
ovs_cfg->enable_lflow_cache =
get_enable_lflow_cache(&cfg->external_ids, chassis_id);
ovs_cfg->limit_lflow_cache =
get_limit_lflow_cache(&cfg->external_ids, chassis_id);
ovs_cfg->memlimit_lflow_cache =
get_memlimit_lflow_cache(&cfg->external_ids, chassis_id);
ovs_cfg->trim_limit_lflow_cache =
get_trim_limit_lflow_cache(&cfg->external_ids, chassis_id);
ovs_cfg->trim_wmark_perc_lflow_cache =
get_trim_wmark_perc_lflow_cache(&cfg->external_ids, chassis_id);
ovs_cfg->trim_timeout_ms =
get_trim_timeout(&cfg->external_ids, chassis_id);
chassis_parse_ovs_encap_type(encap_type, &ovs_cfg->encap_type_set);
/* 'ovn-encap-ip' can accept a comma-delimited list of IP addresses instead
* of a single IP address. Although this is undocumented, it can be used
* to enable certain hardware-offloaded use cases in which a host has
* multiple NICs and is assigning SR-IOV VFs to a guest (as logical ports).
*/
chassis_parse_ovs_encap_ip(encap_ips, &ovs_cfg->encap_ip_set);
chassis_parse_ovs_iface_types(cfg->iface_types, cfg->n_iface_types,
&ovs_cfg->iface_types);
ovs_cfg->is_interconn = get_is_interconn(&cfg->external_ids, chassis_id);
return true;
}
static void
chassis_build_other_config(const struct ovs_chassis_cfg *ovs_cfg,
struct smap *config)
{
smap_replace(config, "ovn-bridge-mappings", ovs_cfg->bridge_mappings);
smap_replace(config, "datapath-type", ovs_cfg->datapath_type);
smap_replace(config, "ovn-cms-options", ovs_cfg->cms_options);
smap_replace(config, "ovn-monitor-all", ovs_cfg->monitor_all);
smap_replace(config, "ovn-enable-lflow-cache",
ovs_cfg->enable_lflow_cache);
smap_replace(config, "ovn-limit-lflow-cache", ovs_cfg->limit_lflow_cache);
smap_replace(config, "ovn-memlimit-lflow-cache-kb",
ovs_cfg->memlimit_lflow_cache);
smap_replace(config, "ovn-trim-limit-lflow-cache",
ovs_cfg->trim_limit_lflow_cache);
smap_replace(config, "ovn-trim-wmark-perc-lflow-cache",
ovs_cfg->trim_wmark_perc_lflow_cache);
smap_replace(config, "ovn-trim-timeout-ms", ovs_cfg->trim_timeout_ms);
smap_replace(config, "iface-types", ds_cstr_ro(&ovs_cfg->iface_types));
smap_replace(config, "ovn-chassis-mac-mappings", ovs_cfg->chassis_macs);
smap_replace(config, "is-interconn",
ovs_cfg->is_interconn ? "true" : "false");
smap_replace(config, OVN_FEATURE_PORT_UP_NOTIF, "true");
smap_replace(config, OVN_FEATURE_CT_NO_MASKED_LABEL, "true");
smap_replace(config, OVN_FEATURE_MAC_BINDING_TIMESTAMP, "true");
smap_replace(config, OVN_FEATURE_CT_LB_RELATED, "true");
smap_replace(config, OVN_FEATURE_FDB_TIMESTAMP, "true");
smap_replace(config, OVN_FEATURE_LS_DPG_COLUMN, "true");
}
/*
* Returns true if any external-id doesn't match the values in 'chassis-rec'.
*/
static bool
chassis_other_config_changed(const struct ovs_chassis_cfg *ovs_cfg,
const struct sbrec_chassis *chassis_rec)
{
const char *chassis_bridge_mappings =
get_bridge_mappings(&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->bridge_mappings, chassis_bridge_mappings)) {
return true;
}
const char *chassis_datapath_type =
smap_get_def(&chassis_rec->other_config, "datapath-type", "");
if (strcmp(ovs_cfg->datapath_type, chassis_datapath_type)) {
return true;
}
const char *chassis_cms_options =
get_cms_options(&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->cms_options, chassis_cms_options)) {
return true;
}
const char *chassis_monitor_all =
get_monitor_all(&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->monitor_all, chassis_monitor_all)) {
return true;
}
const char *chassis_enable_lflow_cache =
get_enable_lflow_cache(&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->enable_lflow_cache, chassis_enable_lflow_cache)) {
return true;
}
const char *chassis_limit_lflow_cache =
get_limit_lflow_cache(&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->limit_lflow_cache, chassis_limit_lflow_cache)) {
return true;
}
const char *chassis_memlimit_lflow_cache =
get_memlimit_lflow_cache(&chassis_rec->other_config,
chassis_rec->name);
if (strcmp(ovs_cfg->memlimit_lflow_cache, chassis_memlimit_lflow_cache)) {
return true;
}
const char *chassis_trim_limit_lflow_cache =
get_trim_limit_lflow_cache(&chassis_rec->other_config,
chassis_rec->name);
if (strcmp(ovs_cfg->trim_limit_lflow_cache,
chassis_trim_limit_lflow_cache)) {
return true;
}
const char *chassis_trim_wmark_perc_lflow_cache =
get_trim_wmark_perc_lflow_cache(
&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->trim_wmark_perc_lflow_cache,
chassis_trim_wmark_perc_lflow_cache)) {
return true;
}
const char *chassis_trim_timeout_ms =
get_trim_timeout(&chassis_rec->other_config, chassis_rec->name);
if (strcmp(ovs_cfg->trim_timeout_ms, chassis_trim_timeout_ms)) {
return true;
}
const char *chassis_mac_mappings =
get_chassis_mac_mappings(&chassis_rec->other_config,
chassis_rec->name);
if (strcmp(ovs_cfg->chassis_macs, chassis_mac_mappings)) {
return true;
}
const char *chassis_iface_types =
smap_get_def(&chassis_rec->other_config, "iface-types", "");
if (strcmp(ds_cstr_ro(&ovs_cfg->iface_types), chassis_iface_types)) {
return true;
}
bool chassis_is_interconn =
smap_get_bool(&chassis_rec->other_config, "is-interconn", false);
if (chassis_is_interconn != ovs_cfg->is_interconn) {
return true;
}
if (!smap_get_bool(&chassis_rec->other_config, OVN_FEATURE_PORT_UP_NOTIF,
false)) {
return true;
}
if (!smap_get_bool(&chassis_rec->other_config,
OVN_FEATURE_CT_NO_MASKED_LABEL,
false)) {
return true;
}
if (!smap_get_bool(&chassis_rec->other_config,
OVN_FEATURE_MAC_BINDING_TIMESTAMP,
false)) {
return true;
}
if (!smap_get_bool(&chassis_rec->other_config,
OVN_FEATURE_CT_LB_RELATED,
false)) {
return true;
}
if (!smap_get_bool(&chassis_rec->other_config,
OVN_FEATURE_FDB_TIMESTAMP,
false)) {
return true;
}
if (!smap_get_bool(&chassis_rec->other_config,
OVN_FEATURE_LS_DPG_COLUMN,
false)) {
return true;
}
return false;
}
/*
* Returns true if the tunnel config obtained by combining 'encap_type_set'
* with 'encap_ip_set' and 'encap_csum' doesn't match the values in
* 'chassis-rec'.
*/
static bool
chassis_tunnels_changed(const struct sset *encap_type_set,
const struct sset *encap_ip_set,
const char *encap_csum,
const struct sbrec_chassis *chassis_rec)
{
struct sset chassis_rec_encap_type_set =
SSET_INITIALIZER(&chassis_rec_encap_type_set);
bool changed = false;
for (size_t i = 0; i < chassis_rec->n_encaps; i++) {
if (strcmp(chassis_rec->name, chassis_rec->encaps[i]->chassis_name)) {
return true;
}
if (!sset_contains(encap_type_set, chassis_rec->encaps[i]->type)) {
changed = true;
break;
}
sset_add(&chassis_rec_encap_type_set, chassis_rec->encaps[i]->type);
if (!sset_contains(encap_ip_set, chassis_rec->encaps[i]->ip)) {
changed = true;
break;
}
if (strcmp(smap_get_def(&chassis_rec->encaps[i]->options, "csum", ""),
encap_csum)) {
changed = true;
break;
}
}
if (!changed) {
size_t tunnel_count =
sset_count(encap_type_set) * sset_count(encap_ip_set);
if (tunnel_count != chassis_rec->n_encaps) {
changed = true;
}
}
if (!changed) {
if (sset_count(encap_type_set) !=
sset_count(&chassis_rec_encap_type_set)) {
changed = true;
}
}
sset_destroy(&chassis_rec_encap_type_set);
return changed;
}
/*
* Build the new encaps config (full mesh of 'encap_type_set' and
* 'encap_ip_set'). Allocates and stores the new 'n_encap' Encap records in
* 'encaps'.
*/
static struct sbrec_encap **
chassis_build_encaps(struct ovsdb_idl_txn *ovnsb_idl_txn,
const struct sset *encap_type_set,
const struct sset *encap_ip_set,
const char *chassis_id,
const char *encap_csum,
size_t *n_encap)
{
size_t tunnel_count = 0;
struct sbrec_encap **encaps =
xmalloc(sset_count(encap_type_set) * sset_count(encap_ip_set) *
sizeof(*encaps));
const struct smap options = SMAP_CONST1(&options, "csum", encap_csum);
const char *encap_ip;
const char *encap_type;
SSET_FOR_EACH (encap_ip, encap_ip_set) {
SSET_FOR_EACH (encap_type, encap_type_set) {
struct sbrec_encap *encap = sbrec_encap_insert(ovnsb_idl_txn);
sbrec_encap_set_type(encap, encap_type);
sbrec_encap_set_ip(encap, encap_ip);
sbrec_encap_set_options(encap, &options);
sbrec_encap_set_chassis_name(encap, chassis_id);
encaps[tunnel_count] = encap;
tunnel_count++;
}
}
*n_encap = tunnel_count;
return encaps;
}
/* 'struct sset' of all supported options in other_confing. Anything missing
* in this set will be removed from the chassis configuration. */
static void
update_supported_sset(struct sset *supported)
{
/* OvS external_ids. */
sset_add(supported, "ovn-bridge-mappings");
sset_add(supported, "datapath-type");
sset_add(supported, "ovn-cms-options");
sset_add(supported, "ovn-monitor-all");
sset_add(supported, "ovn-enable-lflow-cache");
sset_add(supported, "ovn-limit-lflow-cache");
sset_add(supported, "ovn-memlimit-lflow-cache-kb");
sset_add(supported, "ovn-trim-limit-lflow-cache");
sset_add(supported, "ovn-trim-wmark-perc-lflow-cache");
sset_add(supported, "ovn-trim-timeout-ms");
sset_add(supported, "iface-types");
sset_add(supported, "ovn-chassis-mac-mappings");
sset_add(supported, "is-interconn");
/* Internal options. */
sset_add(supported, "is-vtep");
sset_add(supported, "is-remote");
sset_add(supported, OVN_FEATURE_PORT_UP_NOTIF);
sset_add(supported, OVN_FEATURE_CT_NO_MASKED_LABEL);
sset_add(supported, OVN_FEATURE_MAC_BINDING_TIMESTAMP);
sset_add(supported, OVN_FEATURE_CT_LB_RELATED);
sset_add(supported, OVN_FEATURE_FDB_TIMESTAMP);
sset_add(supported, OVN_FEATURE_LS_DPG_COLUMN);
}
static void
remove_unsupported_options(const struct sbrec_chassis *chassis_rec,
bool *updated)
{
struct sset supported_options = SSET_INITIALIZER(&supported_options);
update_supported_sset(&supported_options);
const struct smap_node *node;
SMAP_FOR_EACH (node, &chassis_rec->other_config) {
if (!sset_contains(&supported_options, node->key)) {
VLOG_WARN("Removing unsupported key \"%s\" from chassis record.",
node->key);
sbrec_chassis_update_other_config_delkey(chassis_rec, node->key);
*updated = true;
}
}
sset_destroy(&supported_options);
}
/* If this is a chassis config update after we initialized the record once
* then we should always be able to find it with the ID we saved in
* chassis_state.
* Otherwise (i.e., first time we create the record or if the system-id
* changed) we create a new record.
*
* Sets '*chassis_rec' to point to the local chassis record.
* Returns true if this record was already in the database, false if it was
* just inserted.
*/
static bool
chassis_get_record(struct ovsdb_idl_txn *ovnsb_idl_txn,
struct ovsdb_idl_index *sbrec_chassis_by_name,
const char *chassis_id,
const struct sbrec_chassis **chassis_rec)
{
const struct sbrec_chassis *chassis =
chassis_lookup_by_name(sbrec_chassis_by_name, chassis_id);
if (!chassis && ovnsb_idl_txn) {
/* Create the chassis record. */
VLOG_DBG("Could not find Chassis, will create it: %s", chassis_id);
*chassis_rec = sbrec_chassis_insert(ovnsb_idl_txn);
return false;
}
*chassis_rec = chassis;
return true;
}
/* Update a Chassis record based on the config in the ovs config.
* Returns true if 'chassis_rec' was updated, false otherwise.
*/
static bool
chassis_update(const struct sbrec_chassis *chassis_rec,
struct ovsdb_idl_txn *ovnsb_idl_txn,
const struct ovs_chassis_cfg *ovs_cfg,
const char *chassis_id,
const struct sset *transport_zones)
{
bool updated = false;
if (strcmp(chassis_id, chassis_rec->name)) {
sbrec_chassis_set_name(chassis_rec, chassis_id);
updated = true;
}
if (strcmp(ovs_cfg->hostname, chassis_rec->hostname)) {
sbrec_chassis_set_hostname(chassis_rec, ovs_cfg->hostname);
updated = true;
}
if (chassis_other_config_changed(ovs_cfg, chassis_rec)) {
struct smap other_config;
smap_clone(&other_config, &chassis_rec->other_config);
chassis_build_other_config(ovs_cfg, &other_config);
sbrec_chassis_verify_other_config(chassis_rec);
sbrec_chassis_set_other_config(chassis_rec, &other_config);
smap_destroy(&other_config);
updated = true;
}
update_chassis_transport_zones(transport_zones, chassis_rec);
remove_unsupported_options(chassis_rec, &updated);
/* If any of the encaps should change, update them. */
bool tunnels_changed =
chassis_tunnels_changed(&ovs_cfg->encap_type_set,
&ovs_cfg->encap_ip_set, ovs_cfg->encap_csum,
chassis_rec);
if (!tunnels_changed) {
return updated;
}
struct sbrec_encap **encaps;
size_t n_encap;
encaps =
chassis_build_encaps(ovnsb_idl_txn, &ovs_cfg->encap_type_set,
&ovs_cfg->encap_ip_set, chassis_id,
ovs_cfg->encap_csum, &n_encap);
sbrec_chassis_set_encaps(chassis_rec, encaps, n_encap);
free(encaps);
return true;
}
/* If this is a chassis_private config update after we initialized the record
* once then we should always be able to find it with the ID we saved in
* chassis_state.
* Otherwise (i.e., first time we created the chassis record or if the
* system-id changed) we create a new record.
*
* Returns the local chassis record.
*/
static const struct sbrec_chassis_private *
chassis_private_get_record(
struct ovsdb_idl_txn *ovnsb_idl_txn,
struct ovsdb_idl_index *sbrec_chassis_pvt_by_name,
const char *chassis_id)
{
const struct sbrec_chassis_private *chassis_p =
chassis_private_lookup_by_name(sbrec_chassis_pvt_by_name,
chassis_id);
if (!chassis_p) {
return sbrec_chassis_private_insert(ovnsb_idl_txn);
}
return chassis_p;
}
static void
chassis_private_update(const struct sbrec_chassis_private *chassis_pvt,
const struct sbrec_chassis *chassis,
const char *chassis_id)
{
if (!chassis_pvt->name || strcmp(chassis_pvt->name, chassis_id)) {
sbrec_chassis_private_set_name(chassis_pvt, chassis_id);
}
if (chassis_pvt->chassis != chassis) {
sbrec_chassis_private_set_chassis(chassis_pvt, chassis);
}
}
/* Returns this chassis's Chassis record, if it is available. */
const struct sbrec_chassis *
chassis_run(struct ovsdb_idl_txn *ovnsb_idl_txn,
struct ovsdb_idl_index *sbrec_chassis_by_name,
struct ovsdb_idl_index *sbrec_chassis_private_by_name,
const struct ovsrec_open_vswitch_table *ovs_table,
const char *chassis_id,
const struct ovsrec_bridge *br_int,
const struct sset *transport_zones,
const struct sbrec_chassis_private **chassis_private)
{
struct ovs_chassis_cfg ovs_cfg;
*chassis_private = NULL;
/* Get the chassis config from the ovs table. */
ovs_chassis_cfg_init(&ovs_cfg);
if (!chassis_parse_ovs_config(ovs_table, br_int, &ovs_cfg)) {
return NULL;
}
const struct sbrec_chassis *chassis_rec = NULL;
bool existed = chassis_get_record(ovnsb_idl_txn, sbrec_chassis_by_name,
chassis_id, &chassis_rec);
/* If we found (or created) a record, update it with the correct config
* and store the current chassis_id for fast lookup in case it gets
* modified in the ovs table.
*/
if (chassis_rec && ovnsb_idl_txn) {
bool updated = chassis_update(chassis_rec, ovnsb_idl_txn, &ovs_cfg,
chassis_id, transport_zones);
if (!existed || updated) {
ovsdb_idl_txn_add_comment(ovnsb_idl_txn,
"ovn-controller: %s chassis '%s'",
!existed ? "registering" : "updating",
chassis_id);
}
*chassis_private =
chassis_private_get_record(ovnsb_idl_txn,
sbrec_chassis_private_by_name,
chassis_id);
if (*chassis_private) {
chassis_private_update(*chassis_private, chassis_rec, chassis_id);
}
}
ovs_chassis_cfg_destroy(&ovs_cfg);
return existed ? chassis_rec : NULL;
}
bool
chassis_get_mac(const struct sbrec_chassis *chassis_rec,
const char *bridge_mapping,
struct eth_addr *chassis_mac)
{
const char *tokens =
get_chassis_mac_mappings(&chassis_rec->other_config,
chassis_rec->name);
if (!tokens[0]) {
return false;
}
char *save_ptr = NULL;
bool ret = false;
char *tokstr = xstrdup(tokens);
/* Format for a chassis mac configuration is:
* ovn-chassis-mac-mappings="bridge-name1:MAC1,bridge-name2:MAC2"
*/
for (char *token = strtok_r(tokstr, ",", &save_ptr);
token != NULL;
token = strtok_r(NULL, ",", &save_ptr)) {
char *save_ptr2 = NULL;
char *chassis_mac_bridge = strtok_r(token, ":", &save_ptr2);
char *chassis_mac_str = strtok_r(NULL, "", &save_ptr2);
if (!strcmp(chassis_mac_bridge, bridge_mapping)) {
struct eth_addr temp_mac;
/* Return the first chassis mac. */
char *err_str = str_to_mac(chassis_mac_str, &temp_mac);
if (err_str) {
free(err_str);
continue;
}
ret = true;
*chassis_mac = temp_mac;
break;
}
}
free(tokstr);
return ret;
}
const char *
get_ovs_chassis_id(const struct ovsrec_open_vswitch_table *ovs_table)
{
if (cli_system_id) {
return cli_system_id;
}
if (file_system_id) {
return file_system_id;
}
const struct ovsrec_open_vswitch *cfg
= ovsrec_open_vswitch_table_first(ovs_table);
const char *chassis_id = cfg ? smap_get(&cfg->external_ids, "system-id")
: NULL;
if (!chassis_id) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
VLOG_WARN_RL(&rl, "'system-id' in Open_vSwitch database is missing.");
}
return chassis_id;
}
static bool
is_chassis_idx_stored(const struct ovsrec_open_vswitch_table *ovs_table)
{
const struct ovsrec_open_vswitch *cfg =
ovsrec_open_vswitch_table_first(ovs_table);
const char *chassis_id = get_ovs_chassis_id(ovs_table);
if (!chassis_id) {
return false;
}
char *idx_key = xasprintf(CHASSIS_IDX_PREFIX "%s", chassis_id);
const char *idx = smap_get(&cfg->other_config, idx_key);
free(idx_key);
return !!idx;
}
const char *get_chassis_idx(const struct ovsrec_open_vswitch_table *ovs_table)
{
const struct ovsrec_open_vswitch *cfg =
ovsrec_open_vswitch_table_first(ovs_table);
const char *chassis_id = get_ovs_chassis_id(ovs_table);
if (!chassis_id) {
return "";
}
char *idx_key = xasprintf(CHASSIS_IDX_PREFIX "%s", chassis_id);
const char *idx = smap_get_def(&cfg->other_config, idx_key, "");
free(idx_key);
return idx;
}
void
store_chassis_index_if_needed(
const struct ovsrec_open_vswitch_table *ovs_table)
{
const struct ovsrec_open_vswitch *cfg =
ovsrec_open_vswitch_table_first(ovs_table);
const char *chassis_id = get_ovs_chassis_id(ovs_table);
char *idx_key = xasprintf(CHASSIS_IDX_PREFIX "%s", chassis_id);
const char *chassis_idx = smap_get(&cfg->other_config, idx_key);
if (!chassis_idx) {
/* Collect all indices so far consumed by other chassis. */
struct sset used_indices = SSET_INITIALIZER(&used_indices);
struct smap_node *node;
SMAP_FOR_EACH (node, &cfg->other_config) {
if (!strncmp(node->key, CHASSIS_IDX_PREFIX,
sizeof(CHASSIS_IDX_PREFIX) - 1)) {
sset_add(&used_indices, node->value);
}
}
/* First chassis on the host: use an empty string to avoid adding an
* unnecessary index character to tunnel port names when a single
* controller is running on the host (the most common case). */
if (!sset_contains(&used_indices, "")) {
ovsrec_open_vswitch_update_other_config_setkey(
cfg, idx_key, "");
goto out;
}
/* Next chassis gets an alphanum index allocated. */
char idx[] = "0";
for (char i = '0'; i <= '9'; i++) {
idx[0] = i;
if (!sset_contains(&used_indices, idx)) {
ovsrec_open_vswitch_update_other_config_setkey(
cfg, idx_key, idx);
goto out;
}
}
for (char i = 'a'; i <= 'z'; i++) {
idx[0] = i;
if (!sset_contains(&used_indices, idx)) {
ovsrec_open_vswitch_update_other_config_setkey(
cfg, idx_key, idx);
goto out;
}
}
/* All indices consumed: it's safer to just abort. */
VLOG_ERR("All unique controller indices consumed. Exiting.");
exit(EXIT_FAILURE);
}
out:
free(idx_key);
}
static void
clear_chassis_index_if_needed(
const struct ovsrec_open_vswitch_table *ovs_table)