#include "command-line.h"
#include "daemon.h"
#include "dirs.h"
+#include "dynamic-string.h"
#include "fatal-signal.h"
#include "hash.h"
#include "hmap.h"
-#include "ovn/ovn-nb-idl.h"
-#include "ovn/ovn-sb-idl.h"
+#include "json.h"
+#include "ovn/lib/lex.h"
+#include "ovn/lib/ovn-nb-idl.h"
+#include "ovn/lib/ovn-sb-idl.h"
#include "poll-loop.h"
+#include "smap.h"
#include "stream.h"
#include "stream-ssl.h"
+#include "unixctl.h"
#include "util.h"
#include "uuid.h"
#include "openvswitch/vlog.h"
-VLOG_DEFINE_THIS_MODULE(ovn_nbd);
+VLOG_DEFINE_THIS_MODULE(ovn_northd);
-struct nbd_context {
+static unixctl_cb_func ovn_northd_exit;
+
+struct northd_context {
struct ovsdb_idl *ovnnb_idl;
struct ovsdb_idl *ovnsb_idl;
struct ovsdb_idl_txn *ovnnb_txn;
static const char *default_db(void);
+
+/* Ingress pipeline stages.
+ *
+ * These must be listed in the order that the stages will be executed. */
+#define INGRESS_STAGES \
+ INGRESS_STAGE(PORT_SEC, port_sec) \
+ INGRESS_STAGE(ACL, acl) \
+ INGRESS_STAGE(L2_LKUP, l2_lkup)
+
+enum ingress_stage {
+#define INGRESS_STAGE(NAME, STR) S_IN_##NAME,
+ INGRESS_STAGES
+#undef INGRESS_STAGE
+ INGRESS_N_STAGES
+};
+
+/* Egress pipeline stages.
+ *
+ * These must be listed in the order that the stages will be executed. */
+#define EGRESS_STAGES \
+ EGRESS_STAGE(ACL, acl) \
+ EGRESS_STAGE(PORT_SEC, port_sec)
+
+enum egress_stage {
+#define EGRESS_STAGE(NAME, STR) S_OUT_##NAME,
+ EGRESS_STAGES
+#undef EGRESS_STAGE
+ EGRESS_N_STAGES
+};
+
static void
usage(void)
{
stream_usage("database", true, true, false);
}
\f
-static int
-compare_strings(const void *a_, const void *b_)
+struct tnlid_node {
+ struct hmap_node hmap_node;
+ uint32_t tnlid;
+};
+
+static void
+destroy_tnlids(struct hmap *tnlids)
{
- char *const *a = a_;
- char *const *b = b_;
- return strcmp(*a, *b);
+ struct tnlid_node *node, *next;
+ HMAP_FOR_EACH_SAFE (node, next, hmap_node, tnlids) {
+ hmap_remove(tnlids, &node->hmap_node);
+ free(node);
+ }
+ hmap_destroy(tnlids);
+}
+
+static void
+add_tnlid(struct hmap *set, uint32_t tnlid)
+{
+ struct tnlid_node *node = xmalloc(sizeof *node);
+ hmap_insert(set, &node->hmap_node, hash_int(tnlid, 0));
+ node->tnlid = tnlid;
}
-/*
- * Determine whether 2 arrays of MAC addresses are the same. It's possible that
- * the lists could be *very* long and this check is being done a lot (every
- * time the OVN_Northbound database changes).
- */
static bool
-macs_equal(char **binding_macs_, size_t b_n_macs,
- char **lport_macs_, size_t l_n_macs)
+tnlid_in_use(const struct hmap *set, uint32_t tnlid)
{
- char **binding_macs, **lport_macs;
- size_t bytes, i;
+ const struct tnlid_node *node;
+ HMAP_FOR_EACH_IN_BUCKET (node, hmap_node, hash_int(tnlid, 0), set) {
+ if (node->tnlid == tnlid) {
+ return true;
+ }
+ }
+ return false;
+}
- if (b_n_macs != l_n_macs) {
- return false;
+static uint32_t
+allocate_tnlid(struct hmap *set, const char *name, uint32_t max,
+ uint32_t *hint)
+{
+ for (uint32_t tnlid = *hint + 1; tnlid != *hint;
+ tnlid = tnlid + 1 <= max ? tnlid + 1 : 1) {
+ if (!tnlid_in_use(set, tnlid)) {
+ add_tnlid(set, tnlid);
+ *hint = tnlid;
+ return tnlid;
+ }
}
- bytes = b_n_macs * sizeof binding_macs_[0];
- binding_macs = xmalloc(bytes);
- lport_macs = xmalloc(bytes);
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_WARN_RL(&rl, "all %s tunnel ids exhausted", name);
+ return 0;
+}
+\f
+/* The 'key' comes from nb->header_.uuid or sb->external_ids:logical-switch. */
+struct ovn_datapath {
+ struct hmap_node key_node; /* Index on 'key'. */
+ struct uuid key; /* nb->header_.uuid. */
- memcpy(binding_macs, binding_macs_, bytes);
- memcpy(lport_macs, lport_macs_, bytes);
+ const struct nbrec_logical_switch *nb; /* May be NULL. */
+ const struct sbrec_datapath_binding *sb; /* May be NULL. */
- qsort(binding_macs, b_n_macs, sizeof binding_macs[0], compare_strings);
- qsort(lport_macs, l_n_macs, sizeof lport_macs[0], compare_strings);
+ struct ovs_list list; /* In list of similar records. */
- for (i = 0; i < b_n_macs; i++) {
- if (strcmp(binding_macs[i], lport_macs[i])) {
- break;
+ struct hmap port_tnlids;
+ uint32_t port_key_hint;
+
+ bool has_unknown;
+};
+
+static struct ovn_datapath *
+ovn_datapath_create(struct hmap *datapaths, const struct uuid *key,
+ const struct nbrec_logical_switch *nb,
+ const struct sbrec_datapath_binding *sb)
+{
+ struct ovn_datapath *od = xzalloc(sizeof *od);
+ od->key = *key;
+ od->sb = sb;
+ od->nb = nb;
+ hmap_init(&od->port_tnlids);
+ od->port_key_hint = 0;
+ hmap_insert(datapaths, &od->key_node, uuid_hash(&od->key));
+ return od;
+}
+
+static void
+ovn_datapath_destroy(struct hmap *datapaths, struct ovn_datapath *od)
+{
+ if (od) {
+ /* Don't remove od->list. It is used within build_datapaths() as a
+ * private list and once we've exited that function it is not safe to
+ * use it. */
+ hmap_remove(datapaths, &od->key_node);
+ destroy_tnlids(&od->port_tnlids);
+ free(od);
+ }
+}
+
+static struct ovn_datapath *
+ovn_datapath_find(struct hmap *datapaths, const struct uuid *uuid)
+{
+ struct ovn_datapath *od;
+
+ HMAP_FOR_EACH_WITH_HASH (od, key_node, uuid_hash(uuid), datapaths) {
+ if (uuid_equals(uuid, &od->key)) {
+ return od;
}
}
+ return NULL;
+}
- free(binding_macs);
- free(lport_macs);
+static struct ovn_datapath *
+ovn_datapath_from_sbrec(struct hmap *datapaths,
+ const struct sbrec_datapath_binding *sb)
+{
+ struct uuid key;
- return (i == b_n_macs) ? true : false;
+ if (!smap_get_uuid(&sb->external_ids, "logical-switch", &key)) {
+ return NULL;
+ }
+ return ovn_datapath_find(datapaths, &key);
}
-/*
- * When a change has occurred in the OVN_Northbound database, we go through and
- * make sure that the contents of the Bindings table in the OVN_Southbound
- * database are up to date with the logical ports defined in the
- * OVN_Northbound database.
- */
static void
-set_bindings(struct nbd_context *ctx)
+join_datapaths(struct northd_context *ctx, struct hmap *datapaths,
+ struct ovs_list *sb_only, struct ovs_list *nb_only,
+ struct ovs_list *both)
{
- struct hmap bindings_hmap;
- const struct sbrec_bindings *binding;
- const struct nbrec_logical_port *lport;
+ hmap_init(datapaths);
+ list_init(sb_only);
+ list_init(nb_only);
+ list_init(both);
+
+ const struct sbrec_datapath_binding *sb, *sb_next;
+ SBREC_DATAPATH_BINDING_FOR_EACH_SAFE (sb, sb_next, ctx->ovnsb_idl) {
+ struct uuid key;
+ if (!smap_get_uuid(&sb->external_ids, "logical-switch", &key)) {
+ ovsdb_idl_txn_add_comment(ctx->ovnsb_txn,
+ "deleting Datapath_Binding "UUID_FMT" that "
+ "lacks external-ids:logical-switch",
+ UUID_ARGS(&sb->header_.uuid));
+ sbrec_datapath_binding_delete(sb);
+ continue;
+ }
- struct binding_hash_node {
- struct hmap_node node;
- const struct sbrec_bindings *binding;
- } *hash_node, *hash_node_next;
+ if (ovn_datapath_find(datapaths, &key)) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
+ VLOG_INFO_RL(&rl, "deleting Datapath_Binding "UUID_FMT" with "
+ "duplicate external-ids:logical-switch "UUID_FMT,
+ UUID_ARGS(&sb->header_.uuid), UUID_ARGS(&key));
+ sbrec_datapath_binding_delete(sb);
+ continue;
+ }
- /*
- * We will need to look up a binding for every logical port. We don't want
- * to have to do an O(n) search for every binding, so start out by hashing
- * them on the logical port.
- *
- * As we go through every logical port, we will update the binding if it
- * exists or create one otherwise. When the update is done, we'll remove it
- * from the hashmap. At the end, any bindings left in the hashmap are for
- * logical ports that have been deleted.
- */
- hmap_init(&bindings_hmap);
+ struct ovn_datapath *od = ovn_datapath_create(datapaths, &key,
+ NULL, sb);
+ list_push_back(sb_only, &od->list);
+ }
- SBREC_BINDINGS_FOR_EACH(binding, ctx->ovnsb_idl) {
- hash_node = xzalloc(sizeof *hash_node);
- hash_node->binding = binding;
- hmap_insert(&bindings_hmap, &hash_node->node,
- hash_string(binding->logical_port, 0));
+ const struct nbrec_logical_switch *nb;
+ NBREC_LOGICAL_SWITCH_FOR_EACH (nb, ctx->ovnnb_idl) {
+ struct ovn_datapath *od = ovn_datapath_find(datapaths,
+ &nb->header_.uuid);
+ if (od) {
+ od->nb = nb;
+ list_remove(&od->list);
+ list_push_back(both, &od->list);
+ } else {
+ od = ovn_datapath_create(datapaths, &nb->header_.uuid, nb, NULL);
+ list_push_back(nb_only, &od->list);
+ }
}
+}
- NBREC_LOGICAL_PORT_FOR_EACH(lport, ctx->ovnnb_idl) {
- binding = NULL;
- HMAP_FOR_EACH_WITH_HASH(hash_node, node,
- hash_string(lport->name, 0), &bindings_hmap) {
- if (!strcmp(lport->name, hash_node->binding->logical_port)) {
- binding = hash_node->binding;
+static uint32_t
+ovn_datapath_allocate_key(struct hmap *dp_tnlids)
+{
+ static uint32_t hint;
+ return allocate_tnlid(dp_tnlids, "datapath", (1u << 24) - 1, &hint);
+}
+
+static void
+build_datapaths(struct northd_context *ctx, struct hmap *datapaths)
+{
+ struct ovs_list sb_only, nb_only, both;
+
+ join_datapaths(ctx, datapaths, &sb_only, &nb_only, &both);
+
+ if (!list_is_empty(&nb_only)) {
+ /* First index the in-use datapath tunnel IDs. */
+ struct hmap dp_tnlids = HMAP_INITIALIZER(&dp_tnlids);
+ struct ovn_datapath *od;
+ LIST_FOR_EACH (od, list, &both) {
+ add_tnlid(&dp_tnlids, od->sb->tunnel_key);
+ }
+
+ /* Add southbound record for each unmatched northbound record. */
+ LIST_FOR_EACH (od, list, &nb_only) {
+ uint16_t tunnel_key = ovn_datapath_allocate_key(&dp_tnlids);
+ if (!tunnel_key) {
break;
}
+
+ od->sb = sbrec_datapath_binding_insert(ctx->ovnsb_txn);
+
+ char uuid_s[UUID_LEN + 1];
+ sprintf(uuid_s, UUID_FMT, UUID_ARGS(&od->nb->header_.uuid));
+ const struct smap id = SMAP_CONST1(&id, "logical-switch", uuid_s);
+ sbrec_datapath_binding_set_external_ids(od->sb, &id);
+
+ sbrec_datapath_binding_set_tunnel_key(od->sb, tunnel_key);
+ }
+ destroy_tnlids(&dp_tnlids);
+ }
+
+ /* Delete southbound records without northbound matches. */
+ struct ovn_datapath *od, *next;
+ LIST_FOR_EACH_SAFE (od, next, list, &sb_only) {
+ list_remove(&od->list);
+ sbrec_datapath_binding_delete(od->sb);
+ ovn_datapath_destroy(datapaths, od);
+ }
+}
+\f
+struct ovn_port {
+ struct hmap_node key_node; /* Index on 'key'. */
+ const char *key; /* nb->name and sb->logical_port */
+
+ const struct nbrec_logical_port *nb; /* May be NULL. */
+ const struct sbrec_port_binding *sb; /* May be NULL. */
+
+ struct ovn_datapath *od;
+
+ struct ovs_list list; /* In list of similar records. */
+};
+
+static struct ovn_port *
+ovn_port_create(struct hmap *ports, const char *key,
+ const struct nbrec_logical_port *nb,
+ const struct sbrec_port_binding *sb)
+{
+ struct ovn_port *op = xzalloc(sizeof *op);
+ op->key = key;
+ op->sb = sb;
+ op->nb = nb;
+ hmap_insert(ports, &op->key_node, hash_string(op->key, 0));
+ return op;
+}
+
+static void
+ovn_port_destroy(struct hmap *ports, struct ovn_port *port)
+{
+ if (port) {
+ /* Don't remove port->list. It is used within build_ports() as a
+ * private list and once we've exited that function it is not safe to
+ * use it. */
+ hmap_remove(ports, &port->key_node);
+ free(port);
+ }
+}
+
+static struct ovn_port *
+ovn_port_find(struct hmap *ports, const char *name)
+{
+ struct ovn_port *op;
+
+ HMAP_FOR_EACH_WITH_HASH (op, key_node, hash_string(name, 0), ports) {
+ if (!strcmp(op->key, name)) {
+ return op;
}
+ }
+ return NULL;
+}
- if (binding) {
- /* We found an existing binding for this logical port. Update its
- * contents. Right now the only thing we expect that could change
- * is the list of MAC addresses. */
+static uint32_t
+ovn_port_allocate_key(struct ovn_datapath *od)
+{
+ return allocate_tnlid(&od->port_tnlids, "port",
+ (1u << 15) - 1, &od->port_key_hint);
+}
- hmap_remove(&bindings_hmap, &hash_node->node);
- free(hash_node);
- hash_node = NULL;
+static void
+join_logical_ports(struct northd_context *ctx,
+ struct hmap *datapaths, struct hmap *ports,
+ struct ovs_list *sb_only, struct ovs_list *nb_only,
+ struct ovs_list *both)
+{
+ hmap_init(ports);
+ list_init(sb_only);
+ list_init(nb_only);
+ list_init(both);
+
+ const struct sbrec_port_binding *sb;
+ SBREC_PORT_BINDING_FOR_EACH (sb, ctx->ovnsb_idl) {
+ struct ovn_port *op = ovn_port_create(ports, sb->logical_port,
+ NULL, sb);
+ list_push_back(sb_only, &op->list);
+ }
- if (!macs_equal(binding->mac, binding->n_mac,
- lport->macs, lport->n_macs)) {
- sbrec_bindings_set_mac(binding,
- (const char **) lport->macs, lport->n_macs);
+ struct ovn_datapath *od;
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ for (size_t i = 0; i < od->nb->n_ports; i++) {
+ const struct nbrec_logical_port *nb = od->nb->ports[i];
+ struct ovn_port *op = ovn_port_find(ports, nb->name);
+ if (op) {
+ op->nb = nb;
+ list_remove(&op->list);
+ list_push_back(both, &op->list);
+ } else {
+ op = ovn_port_create(ports, nb->name, nb, NULL);
+ list_push_back(nb_only, &op->list);
}
- } else {
- /* There is no binding for this logical port, so create one. */
+ op->od = od;
+ }
+ }
+}
+
+static void
+ovn_port_update_sbrec(const struct ovn_port *op)
+{
+ sbrec_port_binding_set_type(op->sb, op->nb->type);
+ sbrec_port_binding_set_options(op->sb, &op->nb->options);
+ sbrec_port_binding_set_datapath(op->sb, op->od->sb);
+ sbrec_port_binding_set_parent_port(op->sb, op->nb->parent_name);
+ sbrec_port_binding_set_tag(op->sb, op->nb->tag, op->nb->n_tag);
+ sbrec_port_binding_set_mac(op->sb, (const char **) op->nb->macs,
+ op->nb->n_macs);
+}
+
+static void
+build_ports(struct northd_context *ctx, struct hmap *datapaths,
+ struct hmap *ports)
+{
+ struct ovs_list sb_only, nb_only, both;
+
+ join_logical_ports(ctx, datapaths, ports, &sb_only, &nb_only, &both);
- binding = sbrec_bindings_insert(ctx->ovnsb_txn);
- sbrec_bindings_set_logical_port(binding, lport->name);
- sbrec_bindings_set_mac(binding,
- (const char **) lport->macs, lport->n_macs);
+ /* For logical ports that are in both databases, update the southbound
+ * record based on northbound data. Also index the in-use tunnel_keys. */
+ struct ovn_port *op, *next;
+ LIST_FOR_EACH_SAFE (op, next, list, &both) {
+ ovn_port_update_sbrec(op);
+
+ add_tnlid(&op->od->port_tnlids, op->sb->tunnel_key);
+ if (op->sb->tunnel_key > op->od->port_key_hint) {
+ op->od->port_key_hint = op->sb->tunnel_key;
}
}
- HMAP_FOR_EACH_SAFE(hash_node, hash_node_next, node, &bindings_hmap) {
- hmap_remove(&bindings_hmap, &hash_node->node);
- sbrec_bindings_delete(hash_node->binding);
- free(hash_node);
+ /* Add southbound record for each unmatched northbound record. */
+ LIST_FOR_EACH_SAFE (op, next, list, &nb_only) {
+ uint16_t tunnel_key = ovn_port_allocate_key(op->od);
+ if (!tunnel_key) {
+ continue;
+ }
+
+ op->sb = sbrec_port_binding_insert(ctx->ovnsb_txn);
+ ovn_port_update_sbrec(op);
+
+ sbrec_port_binding_set_logical_port(op->sb, op->key);
+ sbrec_port_binding_set_tunnel_key(op->sb, tunnel_key);
+ }
+
+ /* Delete southbound records without northbound matches. */
+ LIST_FOR_EACH_SAFE(op, next, list, &sb_only) {
+ list_remove(&op->list);
+ sbrec_port_binding_delete(op->sb);
+ ovn_port_destroy(ports, op);
}
- hmap_destroy(&bindings_hmap);
+}
+\f
+#define OVN_MIN_MULTICAST 32768
+#define OVN_MAX_MULTICAST 65535
+
+struct multicast_group {
+ const char *name;
+ uint16_t key; /* OVN_MIN_MULTICAST...OVN_MAX_MULTICAST. */
+};
+
+#define MC_FLOOD "_MC_flood"
+static const struct multicast_group mc_flood = { MC_FLOOD, 65535 };
+
+#define MC_UNKNOWN "_MC_unknown"
+static const struct multicast_group mc_unknown = { MC_UNKNOWN, 65534 };
+
+static bool
+multicast_group_equal(const struct multicast_group *a,
+ const struct multicast_group *b)
+{
+ return !strcmp(a->name, b->name) && a->key == b->key;
+}
+
+/* Multicast group entry. */
+struct ovn_multicast {
+ struct hmap_node hmap_node; /* Index on 'datapath' and 'key'. */
+ struct ovn_datapath *datapath;
+ const struct multicast_group *group;
+
+ struct ovn_port **ports;
+ size_t n_ports, allocated_ports;
+};
+
+static uint32_t
+ovn_multicast_hash(const struct ovn_datapath *datapath,
+ const struct multicast_group *group)
+{
+ return hash_pointer(datapath, group->key);
+}
+
+static struct ovn_multicast *
+ovn_multicast_find(struct hmap *mcgroups, struct ovn_datapath *datapath,
+ const struct multicast_group *group)
+{
+ struct ovn_multicast *mc;
+
+ HMAP_FOR_EACH_WITH_HASH (mc, hmap_node,
+ ovn_multicast_hash(datapath, group), mcgroups) {
+ if (mc->datapath == datapath
+ && multicast_group_equal(mc->group, group)) {
+ return mc;
+ }
+ }
+ return NULL;
}
static void
-ovnnb_db_changed(struct nbd_context *ctx)
+ovn_multicast_add(struct hmap *mcgroups, const struct multicast_group *group,
+ struct ovn_port *port)
{
- VLOG_DBG("ovn-northd: ovn-nb db contents have changed.\n");
+ struct ovn_datapath *od = port->od;
+ struct ovn_multicast *mc = ovn_multicast_find(mcgroups, od, group);
+ if (!mc) {
+ mc = xmalloc(sizeof *mc);
+ hmap_insert(mcgroups, &mc->hmap_node, ovn_multicast_hash(od, group));
+ mc->datapath = od;
+ mc->group = group;
+ mc->n_ports = 0;
+ mc->allocated_ports = 4;
+ mc->ports = xmalloc(mc->allocated_ports * sizeof *mc->ports);
+ }
+ if (mc->n_ports >= mc->allocated_ports) {
+ mc->ports = x2nrealloc(mc->ports, &mc->allocated_ports,
+ sizeof *mc->ports);
+ }
+ mc->ports[mc->n_ports++] = port;
+}
- set_bindings(ctx);
+static void
+ovn_multicast_destroy(struct hmap *mcgroups, struct ovn_multicast *mc)
+{
+ if (mc) {
+ hmap_remove(mcgroups, &mc->hmap_node);
+ free(mc->ports);
+ free(mc);
+ }
+}
+
+static void
+ovn_multicast_update_sbrec(const struct ovn_multicast *mc,
+ const struct sbrec_multicast_group *sb)
+{
+ struct sbrec_port_binding **ports = xmalloc(mc->n_ports * sizeof *ports);
+ for (size_t i = 0; i < mc->n_ports; i++) {
+ ports[i] = CONST_CAST(struct sbrec_port_binding *, mc->ports[i]->sb);
+ }
+ sbrec_multicast_group_set_ports(sb, ports, mc->n_ports);
+ free(ports);
+}
+\f
+/* Logical flow generation.
+ *
+ * This code generates the Logical_Flow table in the southbound database, as a
+ * function of most of the northbound database.
+ */
+
+struct ovn_lflow {
+ struct hmap_node hmap_node;
+
+ struct ovn_datapath *od;
+ enum ovn_pipeline { P_IN, P_OUT } pipeline;
+ uint8_t table_id;
+ uint16_t priority;
+ char *match;
+ char *actions;
+};
+
+static size_t
+ovn_lflow_hash(const struct ovn_lflow *lflow)
+{
+ size_t hash = uuid_hash(&lflow->od->key);
+ hash = hash_2words((lflow->table_id << 16) | lflow->priority, hash);
+ hash = hash_string(lflow->match, hash);
+ return hash_string(lflow->actions, hash);
+}
+
+static bool
+ovn_lflow_equal(const struct ovn_lflow *a, const struct ovn_lflow *b)
+{
+ return (a->od == b->od
+ && a->pipeline == b->pipeline
+ && a->table_id == b->table_id
+ && a->priority == b->priority
+ && !strcmp(a->match, b->match)
+ && !strcmp(a->actions, b->actions));
+}
+
+static void
+ovn_lflow_init(struct ovn_lflow *lflow, struct ovn_datapath *od,
+ enum ovn_pipeline pipeline, uint8_t table_id, uint16_t priority,
+ char *match, char *actions)
+{
+ lflow->od = od;
+ lflow->pipeline = pipeline;
+ lflow->table_id = table_id;
+ lflow->priority = priority;
+ lflow->match = match;
+ lflow->actions = actions;
+}
+
+static const char *
+ingress_stage_to_str(int stage) {
+ switch (stage) {
+#define INGRESS_STAGE(NAME, STR) case S_IN_##NAME: return #STR;
+ INGRESS_STAGES
+#undef INGRESS_STAGE
+ default: return "<unknown>";
+ }
+}
+
+static const char *
+egress_stage_to_str(int stage) {
+ switch (stage) {
+#define EGRESS_STAGE(NAME, STR) case S_OUT_##NAME: return #STR;
+ EGRESS_STAGES
+#undef EGRESS_STAGE
+ default: return "<unknown>";
+ }
+}
+
+/* Adds a row with the specified contents to the Logical_Flow table. */
+static void
+ovn_lflow_add(struct hmap *lflow_map, struct ovn_datapath *od,
+ enum ovn_pipeline pipeline, uint8_t table_id, uint16_t priority,
+ const char *match, const char *actions)
+{
+ struct ovn_lflow *lflow = xmalloc(sizeof *lflow);
+ ovn_lflow_init(lflow, od, pipeline, table_id, priority,
+ xstrdup(match), xstrdup(actions));
+ hmap_insert(lflow_map, &lflow->hmap_node, ovn_lflow_hash(lflow));
+}
+
+static struct ovn_lflow *
+ovn_lflow_find(struct hmap *lflows, struct ovn_datapath *od,
+ enum ovn_pipeline pipeline, uint8_t table_id, uint16_t priority,
+ const char *match, const char *actions)
+{
+ struct ovn_lflow target;
+ ovn_lflow_init(&target, od, pipeline, table_id, priority,
+ CONST_CAST(char *, match), CONST_CAST(char *, actions));
+
+ struct ovn_lflow *lflow;
+ HMAP_FOR_EACH_WITH_HASH (lflow, hmap_node, ovn_lflow_hash(&target),
+ lflows) {
+ if (ovn_lflow_equal(lflow, &target)) {
+ return lflow;
+ }
+ }
+ return NULL;
+}
+
+static void
+ovn_lflow_destroy(struct hmap *lflows, struct ovn_lflow *lflow)
+{
+ if (lflow) {
+ hmap_remove(lflows, &lflow->hmap_node);
+ free(lflow->match);
+ free(lflow->actions);
+ free(lflow);
+ }
+}
+
+/* Appends port security constraints on L2 address field 'eth_addr_field'
+ * (e.g. "eth.src" or "eth.dst") to 'match'. 'port_security', with
+ * 'n_port_security' elements, is the collection of port_security constraints
+ * from an OVN_NB Logical_Port row. */
+static void
+build_port_security(const char *eth_addr_field,
+ char **port_security, size_t n_port_security,
+ struct ds *match)
+{
+ size_t base_len = match->length;
+ ds_put_format(match, " && %s == {", eth_addr_field);
+
+ size_t n = 0;
+ for (size_t i = 0; i < n_port_security; i++) {
+ struct eth_addr ea;
+
+ if (eth_addr_from_string(port_security[i], &ea)) {
+ ds_put_format(match, ETH_ADDR_FMT, ETH_ADDR_ARGS(ea));
+ ds_put_char(match, ' ');
+ n++;
+ }
+ }
+ ds_chomp(match, ' ');
+ ds_put_cstr(match, "}");
+
+ if (!n) {
+ match->length = base_len;
+ }
+}
+
+static bool
+lport_is_enabled(const struct nbrec_logical_port *lport)
+{
+ return !lport->enabled || *lport->enabled;
+}
+
+/* Updates the Logical_Flow and Multicast_Group tables in the OVN_SB database,
+ * constructing their contents based on the OVN_NB database. */
+static void
+build_lflows(struct northd_context *ctx, struct hmap *datapaths,
+ struct hmap *ports)
+{
+ /* This flow table structure is documented in ovn-northd(8), so please
+ * update ovn-northd.8.xml if you change anything. */
+
+ struct hmap lflows = HMAP_INITIALIZER(&lflows);
+ struct hmap mcgroups = HMAP_INITIALIZER(&mcgroups);
+
+ /* Ingress table 0: Admission control framework (priorities 0 and 100). */
+ struct ovn_datapath *od;
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ /* Logical VLANs not supported. */
+ ovn_lflow_add(&lflows, od, P_IN, S_IN_PORT_SEC, 100, "vlan.present",
+ "drop;");
+
+ /* Broadcast/multicast source address is invalid. */
+ ovn_lflow_add(&lflows, od, P_IN, S_IN_PORT_SEC, 100, "eth.src[40]",
+ "drop;");
+
+ /* Port security flows have priority 50 (see below) and will continue
+ * to the next table if packet source is acceptable. */
+ }
+
+ /* Ingress table 0: Ingress port security (priority 50). */
+ struct ovn_port *op;
+ HMAP_FOR_EACH (op, key_node, ports) {
+ if (!lport_is_enabled(op->nb)) {
+ /* Drop packets from disabled logical ports (since logical flow
+ * tables are default-drop). */
+ continue;
+ }
+
+ struct ds match = DS_EMPTY_INITIALIZER;
+ ds_put_cstr(&match, "inport == ");
+ json_string_escape(op->key, &match);
+ build_port_security("eth.src",
+ op->nb->port_security, op->nb->n_port_security,
+ &match);
+ ovn_lflow_add(&lflows, op->od, P_IN, S_IN_PORT_SEC, 50,
+ ds_cstr(&match), "next;");
+ ds_destroy(&match);
+ }
+
+ /* Ingress table 1: ACLs (any priority). */
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ for (size_t i = 0; i < od->nb->n_acls; i++) {
+ const struct nbrec_acl *acl = od->nb->acls[i];
+ const char *action;
+
+ if (strcmp(acl->direction, "from-lport")) {
+ continue;
+ }
+
+ action = (!strcmp(acl->action, "allow") ||
+ !strcmp(acl->action, "allow-related"))
+ ? "next;" : "drop;";
+ ovn_lflow_add(&lflows, od, P_IN, S_IN_ACL, acl->priority,
+ acl->match, action);
+ }
+ }
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ ovn_lflow_add(&lflows, od, P_IN, S_IN_ACL, 0, "1", "next;");
+ }
+
+ /* Ingress table 2: Destination lookup, broadcast and multicast handling
+ * (priority 100). */
+ HMAP_FOR_EACH (op, key_node, ports) {
+ if (lport_is_enabled(op->nb)) {
+ ovn_multicast_add(&mcgroups, &mc_flood, op);
+ }
+ }
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ ovn_lflow_add(&lflows, od, P_IN, S_IN_L2_LKUP, 100, "eth.dst[40]",
+ "outport = \""MC_FLOOD"\"; output;");
+ }
+
+ /* Ingress table 2: Destination lookup, unicast handling (priority 50), */
+ HMAP_FOR_EACH (op, key_node, ports) {
+ for (size_t i = 0; i < op->nb->n_macs; i++) {
+ struct eth_addr mac;
+
+ if (eth_addr_from_string(op->nb->macs[i], &mac)) {
+ struct ds match, actions;
+
+ ds_init(&match);
+ ds_put_format(&match, "eth.dst == %s", op->nb->macs[i]);
+
+ ds_init(&actions);
+ ds_put_cstr(&actions, "outport = ");
+ json_string_escape(op->nb->name, &actions);
+ ds_put_cstr(&actions, "; output;");
+ ovn_lflow_add(&lflows, op->od, P_IN, S_IN_L2_LKUP, 50,
+ ds_cstr(&match), ds_cstr(&actions));
+ ds_destroy(&actions);
+ ds_destroy(&match);
+ } else if (!strcmp(op->nb->macs[i], "unknown")) {
+ if (lport_is_enabled(op->nb)) {
+ ovn_multicast_add(&mcgroups, &mc_unknown, op);
+ op->od->has_unknown = true;
+ }
+ } else {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+
+ VLOG_INFO_RL(&rl, "%s: invalid syntax '%s' in macs column",
+ op->nb->name, op->nb->macs[i]);
+ }
+ }
+ }
+
+ /* Ingress table 2: Destination lookup for unknown MACs (priority 0). */
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ if (od->has_unknown) {
+ ovn_lflow_add(&lflows, od, P_IN, S_IN_L2_LKUP, 0, "1",
+ "outport = \""MC_UNKNOWN"\"; output;");
+ }
+ }
+
+ /* Egress table 0: ACLs (any priority). */
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ for (size_t i = 0; i < od->nb->n_acls; i++) {
+ const struct nbrec_acl *acl = od->nb->acls[i];
+ const char *action;
+
+ if (strcmp(acl->direction, "to-lport")) {
+ continue;
+ }
+
+ action = (!strcmp(acl->action, "allow") ||
+ !strcmp(acl->action, "allow-related"))
+ ? "next;" : "drop;";
+ ovn_lflow_add(&lflows, od, P_OUT, S_OUT_ACL, acl->priority,
+ acl->match, action);
+ }
+ }
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ ovn_lflow_add(&lflows, od, P_OUT, S_OUT_ACL, 0, "1", "next;");
+ }
+
+ /* Egress table 1: Egress port security multicast/broadcast (priority
+ * 100). */
+ HMAP_FOR_EACH (od, key_node, datapaths) {
+ ovn_lflow_add(&lflows, od, P_OUT, S_OUT_PORT_SEC, 100, "eth.dst[40]",
+ "output;");
+ }
+
+ /* Egress table 1: Egress port security (priorities 50 and 150).
+ *
+ * Priority 50 rules implement port security for enabled logical port.
+ *
+ * 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) {
+ struct ds match;
+
+ ds_init(&match);
+ ds_put_cstr(&match, "outport == ");
+ json_string_escape(op->key, &match);
+ if (lport_is_enabled(op->nb)) {
+ build_port_security("eth.dst",
+ op->nb->port_security, op->nb->n_port_security,
+ &match);
+ ovn_lflow_add(&lflows, op->od, P_OUT, S_OUT_PORT_SEC, 50,
+ ds_cstr(&match), "output;");
+ } else {
+ ovn_lflow_add(&lflows, op->od, P_OUT, S_OUT_PORT_SEC, 150,
+ ds_cstr(&match), "drop;");
+ }
+
+ ds_destroy(&match);
+ }
+
+ /* Push changes to the Logical_Flow table to database. */
+ const struct sbrec_logical_flow *sbflow, *next_sbflow;
+ SBREC_LOGICAL_FLOW_FOR_EACH_SAFE (sbflow, next_sbflow, ctx->ovnsb_idl) {
+ struct ovn_datapath *od
+ = ovn_datapath_from_sbrec(datapaths, sbflow->logical_datapath);
+ if (!od) {
+ sbrec_logical_flow_delete(sbflow);
+ continue;
+ }
+
+ struct ovn_lflow *lflow = ovn_lflow_find(
+ &lflows, od, (!strcmp(sbflow->pipeline, "ingress") ? P_IN : P_OUT),
+ sbflow->table_id, sbflow->priority,
+ sbflow->match, sbflow->actions);
+ if (lflow) {
+ ovn_lflow_destroy(&lflows, lflow);
+ } else {
+ sbrec_logical_flow_delete(sbflow);
+ }
+ }
+ struct ovn_lflow *lflow, *next_lflow;
+ HMAP_FOR_EACH_SAFE (lflow, next_lflow, hmap_node, &lflows) {
+ sbflow = sbrec_logical_flow_insert(ctx->ovnsb_txn);
+ sbrec_logical_flow_set_logical_datapath(sbflow, lflow->od->sb);
+ sbrec_logical_flow_set_pipeline(
+ sbflow, lflow->pipeline == P_IN ? "ingress" : "egress");
+ sbrec_logical_flow_set_table_id(sbflow, lflow->table_id);
+ sbrec_logical_flow_set_priority(sbflow, lflow->priority);
+ sbrec_logical_flow_set_match(sbflow, lflow->match);
+ sbrec_logical_flow_set_actions(sbflow, lflow->actions);
+
+ const struct smap ids = SMAP_CONST1(
+ &ids, "stage-name",
+ (lflow->pipeline == P_IN
+ ? ingress_stage_to_str(lflow->table_id)
+ : egress_stage_to_str(lflow->table_id)));
+ sbrec_logical_flow_set_external_ids(sbflow, &ids);
+
+ ovn_lflow_destroy(&lflows, lflow);
+ }
+ hmap_destroy(&lflows);
+
+ /* Push changes to the Multicast_Group table to database. */
+ const struct sbrec_multicast_group *sbmc, *next_sbmc;
+ SBREC_MULTICAST_GROUP_FOR_EACH_SAFE (sbmc, next_sbmc, ctx->ovnsb_idl) {
+ struct ovn_datapath *od = ovn_datapath_from_sbrec(datapaths,
+ sbmc->datapath);
+ if (!od) {
+ sbrec_multicast_group_delete(sbmc);
+ continue;
+ }
+
+ struct multicast_group group = { .name = sbmc->name,
+ .key = sbmc->tunnel_key };
+ struct ovn_multicast *mc = ovn_multicast_find(&mcgroups, od, &group);
+ if (mc) {
+ ovn_multicast_update_sbrec(mc, sbmc);
+ ovn_multicast_destroy(&mcgroups, mc);
+ } else {
+ sbrec_multicast_group_delete(sbmc);
+ }
+ }
+ struct ovn_multicast *mc, *next_mc;
+ HMAP_FOR_EACH_SAFE (mc, next_mc, hmap_node, &mcgroups) {
+ sbmc = sbrec_multicast_group_insert(ctx->ovnsb_txn);
+ sbrec_multicast_group_set_datapath(sbmc, mc->datapath->sb);
+ sbrec_multicast_group_set_name(sbmc, mc->group->name);
+ sbrec_multicast_group_set_tunnel_key(sbmc, mc->group->key);
+ ovn_multicast_update_sbrec(mc, sbmc);
+ ovn_multicast_destroy(&mcgroups, mc);
+ }
+ hmap_destroy(&mcgroups);
+}
+\f
+static void
+ovnnb_db_changed(struct northd_context *ctx)
+{
+ VLOG_DBG("ovn-nb db contents have changed.");
+
+ struct hmap datapaths, ports;
+ build_datapaths(ctx, &datapaths);
+ build_ports(ctx, &datapaths, &ports);
+ build_lflows(ctx, &datapaths, &ports);
+
+ struct ovn_datapath *dp, *next_dp;
+ HMAP_FOR_EACH_SAFE (dp, next_dp, key_node, &datapaths) {
+ ovn_datapath_destroy(&datapaths, dp);
+ }
+ hmap_destroy(&datapaths);
+
+ struct ovn_port *port, *next_port;
+ HMAP_FOR_EACH_SAFE (port, next_port, key_node, &ports) {
+ ovn_port_destroy(&ports, port);
+ }
+ hmap_destroy(&ports);
}
/*
* The only change we get notified about is if the 'chassis' column of the
- * 'Bindings' table changes. When this column is not empty, it means we need to
- * set the corresponding logical port as 'up' in the northbound DB.
+ * 'Port_Binding' table changes. When this column is not empty, it means we
+ * need to set the corresponding logical port as 'up' in the northbound DB.
*/
static void
-ovnsb_db_changed(struct nbd_context *ctx)
+ovnsb_db_changed(struct northd_context *ctx)
{
struct hmap lports_hmap;
- const struct sbrec_bindings *binding;
- const struct nbrec_logical_port *lport;
+ const struct sbrec_port_binding *sb;
+ const struct nbrec_logical_port *nb;
struct lport_hash_node {
struct hmap_node node;
- const struct nbrec_logical_port *lport;
+ const struct nbrec_logical_port *nb;
} *hash_node, *hash_node_next;
VLOG_DBG("Recalculating port up states for ovn-nb db.");
hmap_init(&lports_hmap);
- NBREC_LOGICAL_PORT_FOR_EACH(lport, ctx->ovnnb_idl) {
+ NBREC_LOGICAL_PORT_FOR_EACH(nb, ctx->ovnnb_idl) {
hash_node = xzalloc(sizeof *hash_node);
- hash_node->lport = lport;
- hmap_insert(&lports_hmap, &hash_node->node,
- hash_string(lport->name, 0));
+ hash_node->nb = nb;
+ hmap_insert(&lports_hmap, &hash_node->node, hash_string(nb->name, 0));
}
- SBREC_BINDINGS_FOR_EACH(binding, ctx->ovnsb_idl) {
- lport = NULL;
+ SBREC_PORT_BINDING_FOR_EACH(sb, ctx->ovnsb_idl) {
+ nb = NULL;
HMAP_FOR_EACH_WITH_HASH(hash_node, node,
- hash_string(binding->logical_port, 0), &lports_hmap) {
- if (!strcmp(binding->logical_port, hash_node->lport->name)) {
- lport = hash_node->lport;
+ hash_string(sb->logical_port, 0),
+ &lports_hmap) {
+ if (!strcmp(sb->logical_port, hash_node->nb->name)) {
+ nb = hash_node->nb;
break;
}
}
- if (!lport) {
- /* The logical port doesn't exist for this binding. This can happen
- * under normal circumstances when ovn-nbd hasn't gotten around to
- * pruning the Binding yet. */
+ if (!nb) {
+ /* The logical port doesn't exist for this port binding. This can
+ * happen under normal circumstances when ovn-northd hasn't gotten
+ * around to pruning the Port_Binding yet. */
continue;
}
- if (*binding->chassis && (!lport->up || !*lport->up)) {
+ if (sb->chassis && (!nb->up || !*nb->up)) {
bool up = true;
- nbrec_logical_port_set_up(lport, &up, 1);
- } else if (!*binding->chassis && (!lport->up || *lport->up)) {
+ nbrec_logical_port_set_up(nb, &up, 1);
+ } else if (!sb->chassis && (!nb->up || *nb->up)) {
bool up = false;
- nbrec_logical_port_set_up(lport, &up, 1);
+ nbrec_logical_port_set_up(nb, &up, 1);
}
}
hmap_destroy(&lports_hmap);
}
\f
+
+static char *default_db_;
+
static const char *
default_db(void)
{
- static char *def;
- if (!def) {
- def = xasprintf("unix:%s/db.sock", ovs_rundir());
+ if (!default_db_) {
+ default_db_ = xasprintf("unix:%s/db.sock", ovs_rundir());
}
- return def;
+ return default_db_;
}
static void
free(short_options);
}
+static void
+add_column_noalert(struct ovsdb_idl *idl,
+ const struct ovsdb_idl_column *column)
+{
+ ovsdb_idl_add_column(idl, column);
+ ovsdb_idl_omit_alert(idl, column);
+}
+
int
main(int argc, char *argv[])
{
struct ovsdb_idl *ovnnb_idl, *ovnsb_idl;
unsigned int ovnnb_seqno, ovn_seqno;
int res = EXIT_SUCCESS;
- struct nbd_context ctx = {
+ struct northd_context ctx = {
.ovnsb_txn = NULL,
};
bool ovnnb_changes_pending = false;
bool ovn_changes_pending = false;
+ struct unixctl_server *unixctl;
+ int retval;
+ bool exiting;
fatal_ignore_sigpipe();
set_program_name(argv[0]);
+ service_start(&argc, &argv);
vlog_set_levels(NULL, VLF_CONSOLE, VLL_WARN);
vlog_set_levels(&VLM_reconnect, VLF_ANY_DESTINATION, VLL_WARN);
parse_options(argc, argv);
- daemonize();
+ daemonize_start(false);
+
+ retval = unixctl_server_create(NULL, &unixctl);
+ if (retval) {
+ exit(EXIT_FAILURE);
+ }
+ unixctl_command_register("exit", "", 0, 0, ovn_northd_exit, &exiting);
+
+ daemonize_complete();
nbrec_init();
sbrec_init();
ctx.ovnnb_idl = ovnnb_idl = ovsdb_idl_create(ovnnb_db,
&nbrec_idl_class, true, true);
- /* There is only a small subset of changes to the ovn-sb db that ovn-northd
- * has to care about, so we'll enable monitoring those directly. */
ctx.ovnsb_idl = ovnsb_idl = ovsdb_idl_create(ovnsb_db,
&sbrec_idl_class, false, true);
- ovsdb_idl_add_table(ovnsb_idl, &sbrec_table_bindings);
- ovsdb_idl_add_column(ovnsb_idl, &sbrec_bindings_col_logical_port);
- ovsdb_idl_add_column(ovnsb_idl, &sbrec_bindings_col_chassis);
- ovsdb_idl_add_column(ovnsb_idl, &sbrec_bindings_col_mac);
+
+ ovsdb_idl_add_table(ovnsb_idl, &sbrec_table_logical_flow);
+ add_column_noalert(ovnsb_idl, &sbrec_logical_flow_col_logical_datapath);
+ add_column_noalert(ovnsb_idl, &sbrec_logical_flow_col_pipeline);
+ add_column_noalert(ovnsb_idl, &sbrec_logical_flow_col_table_id);
+ add_column_noalert(ovnsb_idl, &sbrec_logical_flow_col_priority);
+ add_column_noalert(ovnsb_idl, &sbrec_logical_flow_col_match);
+ add_column_noalert(ovnsb_idl, &sbrec_logical_flow_col_actions);
+
+ ovsdb_idl_add_table(ovnsb_idl, &sbrec_table_multicast_group);
+ add_column_noalert(ovnsb_idl, &sbrec_multicast_group_col_datapath);
+ add_column_noalert(ovnsb_idl, &sbrec_multicast_group_col_tunnel_key);
+ add_column_noalert(ovnsb_idl, &sbrec_multicast_group_col_name);
+ add_column_noalert(ovnsb_idl, &sbrec_multicast_group_col_ports);
+
+ ovsdb_idl_add_table(ovnsb_idl, &sbrec_table_datapath_binding);
+ add_column_noalert(ovnsb_idl, &sbrec_datapath_binding_col_tunnel_key);
+ add_column_noalert(ovnsb_idl, &sbrec_datapath_binding_col_external_ids);
+
+ ovsdb_idl_add_table(ovnsb_idl, &sbrec_table_port_binding);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_datapath);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_logical_port);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_tunnel_key);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_parent_port);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_tag);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_type);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_options);
+ add_column_noalert(ovnsb_idl, &sbrec_port_binding_col_mac);
+ ovsdb_idl_add_column(ovnsb_idl, &sbrec_port_binding_col_chassis);
/*
* The loop here just runs the IDL in a loop waiting for the seqno to
ovnnb_seqno = ovsdb_idl_get_seqno(ovnnb_idl);
ovn_seqno = ovsdb_idl_get_seqno(ovnsb_idl);
- for (;;) {
+ exiting = false;
+ while (!exiting) {
ovsdb_idl_run(ovnnb_idl);
ovsdb_idl_run(ovnsb_idl);
+ unixctl_server_run(unixctl);
if (!ovsdb_idl_is_alive(ovnnb_idl)) {
int retval = ovsdb_idl_get_last_error(ovnnb_idl);
if (ctx.ovnsb_txn) {
ovsdb_idl_txn_wait(ctx.ovnsb_txn);
}
+ unixctl_server_wait(unixctl);
+ if (exiting) {
+ poll_immediate_wake();
+ }
poll_block();
}
+ if (should_service_stop()) {
+ exiting = true;
+ }
}
+ unixctl_server_destroy(unixctl);
ovsdb_idl_destroy(ovnsb_idl);
ovsdb_idl_destroy(ovnnb_idl);
+ service_stop();
+
+ free(default_db_);
exit(res);
}
+
+static void
+ovn_northd_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
+ const char *argv[] OVS_UNUSED, void *exiting_)
+{
+ bool *exiting = exiting_;
+ *exiting = true;
+
+ unixctl_command_reply(conn, NULL);
+}
projects / cascardo / ovs.git / blobdiff