Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/zebra/zebra_ns.c b/zebra/zebra_ns.c
new file mode 100644
index 0000000..ffdb9df
--- /dev/null
+++ b/zebra/zebra_ns.c
@@ -0,0 +1,250 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* zebra NS Routines
+ * Copyright (C) 2016 Cumulus Networks, Inc.
+ *                    Donald Sharp
+ * Copyright (C) 2017/2018 6WIND
+ */
+#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 "zebra_tc.h"
+#include "rib.h"
+#include "table_manager.h"
+#include "zebra_errors.h"
+#include "zebra_dplane.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);
+}
+
+void zebra_ns_startup_continue(struct zebra_dplane_ctx *ctx)
+{
+	struct zebra_ns *zns = zebra_ns_lookup(dplane_ctx_get_ns_id(ctx));
+	enum zebra_dplane_startup_notifications spot;
+
+	if (!zns) {
+		zlog_err("%s: No Namespace associated with %u", __func__,
+			 dplane_ctx_get_ns_id(ctx));
+		return;
+	}
+
+	spot = dplane_ctx_get_startup_spot(ctx);
+
+	switch (spot) {
+	case ZEBRA_DPLANE_INTERFACES_READ:
+		interface_list_tunneldump(zns);
+		break;
+	case ZEBRA_DPLANE_TUNNELS_READ:
+		interface_list_second(zns);
+		break;
+	case ZEBRA_DPLANE_ADDRESSES_READ:
+		route_read(zns);
+
+		vlan_read(zns);
+		kernel_read_pbr_rules(zns);
+		kernel_read_tc_qdisc(zns);
+		break;
+	}
+}
+
+/* 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);
+
+	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)
+{
+	if (zns->if_table)
+		route_table_finish(zns->if_table);
+	zns->if_table = NULL;
+
+	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;
+}