ripngd: split northbound callbacks into multiple files

Rearrange the ripngd northbound callbacks as following:
* ripng_nb.h: prototypes of all northbound callbacks.
* ripng_nb.c: definition of all northbound callbacks and their
  associated YANG data paths.
* ripng_nb_config.c: implementation of YANG configuration nodes.
* ripng_nb_state.c: implementation of YANG state nodes.
* ripng_nb_rpcs.c: implementation of YANG RPCs.

This should help to keep to code more organized and easier to
maintain.

No behavior changes intended.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/ripngd/ripng_nb_rpcs.c b/ripngd/ripng_nb_rpcs.c
new file mode 100644
index 0000000000..0396daf890
--- /dev/null
+++ b/ripngd/ripng_nb_rpcs.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2018 NetDEF, Inc.
+ *                    Renato Westphal
+ *
+ * This program 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 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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 "if.h"
+#include "vrf.h"
+#include "log.h"
+#include "prefix.h"
+#include "table.h"
+#include "command.h"
+#include "routemap.h"
+#include "agg_table.h"
+#include "northbound.h"
+#include "libfrr.h"
+
+#include "ripngd/ripngd.h"
+#include "ripngd/ripng_nb.h"
+#include "ripngd/ripng_debug.h"
+#include "ripngd/ripng_route.h"
+
+/*
+ * XPath: /frr-ripngd:clear-ripng-route
+ */
+static void clear_ripng_route(struct ripng *ripng)
+{
+	struct agg_node *rp;
+
+	if (IS_RIPNG_DEBUG_EVENT)
+		zlog_debug("Clearing all RIPng routes (VRF %s)",
+			   ripng->vrf_name);
+
+	/* Clear received RIPng routes */
+	for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) {
+		struct list *list;
+		struct listnode *listnode;
+		struct ripng_info *rinfo;
+
+		list = rp->info;
+		if (list == NULL)
+			continue;
+
+		for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) {
+			if (!ripng_route_rte(rinfo))
+				continue;
+
+			if (CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB))
+				ripng_zebra_ipv6_delete(ripng, rp);
+			break;
+		}
+
+		if (rinfo) {
+			RIPNG_TIMER_OFF(rinfo->t_timeout);
+			RIPNG_TIMER_OFF(rinfo->t_garbage_collect);
+			listnode_delete(list, rinfo);
+			ripng_info_free(rinfo);
+		}
+
+		if (list_isempty(list)) {
+			list_delete(&list);
+			rp->info = NULL;
+			agg_unlock_node(rp);
+		}
+	}
+}
+
+int clear_ripng_route_rpc(const char *xpath, const struct list *input,
+			  struct list *output)
+{
+	struct ripng *ripng;
+	struct yang_data *yang_vrf;
+
+	yang_vrf = yang_data_list_find(input, "%s/%s", xpath, "input/vrf");
+	if (yang_vrf) {
+		ripng = ripng_lookup_by_vrf_name(yang_vrf->value);
+		if (ripng)
+			clear_ripng_route(ripng);
+	} else {
+		struct vrf *vrf;
+
+		RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
+			ripng = vrf->info;
+			if (!ripng)
+				continue;
+
+			clear_ripng_route(ripng);
+		}
+	}
+
+	return NB_OK;
+}