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-rw-r--r--zebra/zebra_ns.c233
1 files changed, 233 insertions, 0 deletions
diff --git a/zebra/zebra_ns.c b/zebra/zebra_ns.c
new file mode 100644
index 0000000..13fd972
--- /dev/null
+++ b/zebra/zebra_ns.c
@@ -0,0 +1,233 @@
+/* zebra NS Routines
+ * Copyright (C) 2016 Cumulus Networks, Inc.
+ * Donald Sharp
+ * Copyright (C) 2017/2018 6WIND
+ *
+ * This file is part of Quagga.
+ *
+ * Quagga is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * Quagga is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "zebra.h"
+
+#include "lib/ns.h"
+#include "lib/vrf.h"
+#include "lib/prefix.h"
+#include "lib/memory.h"
+
+#include "zebra_ns.h"
+#include "zebra_vrf.h"
+#include "rt.h"
+#include "zebra_vxlan.h"
+#include "debug.h"
+#include "zebra_netns_notify.h"
+#include "zebra_netns_id.h"
+#include "zebra_pbr.h"
+#include "rib.h"
+#include "table_manager.h"
+#include "zebra_errors.h"
+
+extern struct zebra_privs_t zserv_privs;
+
+DEFINE_MTYPE_STATIC(ZEBRA, ZEBRA_NS, "Zebra Name Space");
+
+static struct zebra_ns *dzns;
+
+static int zebra_ns_disable_internal(struct zebra_ns *zns, bool complete);
+
+struct zebra_ns *zebra_ns_lookup(ns_id_t ns_id)
+{
+ if (ns_id == NS_DEFAULT)
+ return dzns;
+ struct zebra_ns *info = (struct zebra_ns *)ns_info_lookup(ns_id);
+
+ return (info == NULL) ? dzns : info;
+}
+
+static struct zebra_ns *zebra_ns_alloc(void)
+{
+ return XCALLOC(MTYPE_ZEBRA_NS, sizeof(struct zebra_ns));
+}
+
+static int zebra_ns_new(struct ns *ns)
+{
+ struct zebra_ns *zns;
+
+ if (!ns)
+ return -1;
+
+ if (IS_ZEBRA_DEBUG_EVENT)
+ zlog_info("ZNS %s with id %u (created)", ns->name, ns->ns_id);
+
+ zns = zebra_ns_alloc();
+ ns->info = zns;
+ zns->ns = ns;
+ zns->ns_id = ns->ns_id;
+
+ /* Do any needed per-NS data structure allocation. */
+ zns->if_table = route_table_init();
+
+ return 0;
+}
+
+static int zebra_ns_delete(struct ns *ns)
+{
+ struct zebra_ns *zns = (struct zebra_ns *)ns->info;
+
+ if (IS_ZEBRA_DEBUG_EVENT)
+ zlog_info("ZNS %s with id %u (deleted)", ns->name, ns->ns_id);
+ if (!zns)
+ return 0;
+ XFREE(MTYPE_ZEBRA_NS, ns->info);
+ return 0;
+}
+
+static int zebra_ns_enabled(struct ns *ns)
+{
+ struct zebra_ns *zns = ns->info;
+
+ if (IS_ZEBRA_DEBUG_EVENT)
+ zlog_info("ZNS %s with id %u (enabled)", ns->name, ns->ns_id);
+ if (!zns)
+ return 0;
+ return zebra_ns_enable(ns->ns_id, (void **)&zns);
+}
+
+int zebra_ns_disabled(struct ns *ns)
+{
+ struct zebra_ns *zns = ns->info;
+
+ if (IS_ZEBRA_DEBUG_EVENT)
+ zlog_info("ZNS %s with id %u (disabled)", ns->name, ns->ns_id);
+ if (!zns)
+ return 0;
+ return zebra_ns_disable_internal(zns, true);
+}
+
+/* Do global enable actions - open sockets, read kernel config etc. */
+int zebra_ns_enable(ns_id_t ns_id, void **info)
+{
+ struct zebra_ns *zns = (struct zebra_ns *)(*info);
+
+ zns->ns_id = ns_id;
+
+ kernel_init(zns);
+ zebra_dplane_ns_enable(zns, true);
+ interface_list(zns);
+ route_read(zns);
+ kernel_read_pbr_rules(zns);
+
+ return 0;
+}
+
+/* Common handler for ns disable - this can be called during ns config,
+ * or during zebra shutdown.
+ */
+static int zebra_ns_disable_internal(struct zebra_ns *zns, bool complete)
+{
+ route_table_finish(zns->if_table);
+
+ zebra_dplane_ns_enable(zns, false /*Disable*/);
+
+ kernel_terminate(zns, complete);
+
+ zns->ns_id = NS_DEFAULT;
+
+ return 0;
+}
+
+/* During zebra shutdown, do partial cleanup while the async dataplane
+ * is still running.
+ */
+int zebra_ns_early_shutdown(struct ns *ns,
+ void *param_in __attribute__((unused)),
+ void **param_out __attribute__((unused)))
+{
+ struct zebra_ns *zns = ns->info;
+
+ if (zns == NULL)
+ return 0;
+
+ zebra_ns_disable_internal(zns, false);
+ return NS_WALK_CONTINUE;
+}
+
+/* During zebra shutdown, do final cleanup
+ * after all dataplane work is complete.
+ */
+int zebra_ns_final_shutdown(struct ns *ns,
+ void *param_in __attribute__((unused)),
+ void **param_out __attribute__((unused)))
+{
+ struct zebra_ns *zns = ns->info;
+
+ if (zns == NULL)
+ return 0;
+
+ kernel_terminate(zns, true);
+
+ return NS_WALK_CONTINUE;
+}
+
+int zebra_ns_init(void)
+{
+ struct ns *default_ns;
+ ns_id_t ns_id;
+ ns_id_t ns_id_external;
+ struct ns *ns;
+
+ frr_with_privs(&zserv_privs) {
+ ns_id = zebra_ns_id_get_default();
+ }
+ ns_id_external = ns_map_nsid_with_external(ns_id, true);
+ ns_init_management(ns_id_external, ns_id);
+ ns = ns_get_default();
+ if (ns)
+ ns->relative_default_ns = ns_id;
+
+ default_ns = ns_lookup(NS_DEFAULT);
+ if (!default_ns) {
+ flog_err(EC_ZEBRA_NS_NO_DEFAULT,
+ "%s: failed to find default ns", __func__);
+ exit(EXIT_FAILURE); /* This is non-recoverable */
+ }
+
+ /* Do any needed per-NS data structure allocation. */
+ zebra_ns_new(default_ns);
+ dzns = default_ns->info;
+
+ /* Register zebra VRF callbacks, create and activate default VRF. */
+ zebra_vrf_init();
+
+ /* Default NS is activated */
+ zebra_ns_enable(ns_id_external, (void **)&dzns);
+
+ if (vrf_is_backend_netns()) {
+ ns_add_hook(NS_NEW_HOOK, zebra_ns_new);
+ ns_add_hook(NS_ENABLE_HOOK, zebra_ns_enabled);
+ ns_add_hook(NS_DISABLE_HOOK, zebra_ns_disabled);
+ ns_add_hook(NS_DELETE_HOOK, zebra_ns_delete);
+ zebra_ns_notify_parse();
+ zebra_ns_notify_init();
+ }
+
+ return 0;
+}
+
+int zebra_ns_config_write(struct vty *vty, struct ns *ns)
+{
+ if (ns && ns->name != NULL)
+ vty_out(vty, " netns %s\n", ns->name);
+ return 0;
+}