1 files changed, 433 insertions, 0 deletions
diff --git a/ripd/rip_nb_state.c b/ripd/rip_nb_state.c
new file mode 100644
index 0000000..fa0d382
--- /dev/null
+++ b/ripd/rip_nb_state.c
@@ -0,0 +1,433 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2018  NetDEF, Inc.
+ *                     Renato Westphal
+ */
+
+#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 "northbound.h"
+#include "libfrr.h"
+
+#include "ripd/ripd.h"
+#include "ripd/rip_nb.h"
+#include "ripd/rip_debug.h"
+#include "ripd/rip_interface.h"
+
+/*
+ * XPath: /frr-ripd:ripd/instance
+ */
+const void *ripd_instance_get_next(struct nb_cb_get_next_args *args)
+{
+	struct rip *rip = (struct rip *)args->list_entry;
+
+	if (args->list_entry == NULL)
+		rip = RB_MIN(rip_instance_head, &rip_instances);
+	else
+		rip = RB_NEXT(rip_instance_head, rip);
+
+	return rip;
+}
+
+int ripd_instance_get_keys(struct nb_cb_get_keys_args *args)
+{
+	const struct rip *rip = args->list_entry;
+
+	args->keys->num = 1;
+	strlcpy(args->keys->key[0], rip->vrf_name, sizeof(args->keys->key[0]));
+
+	return NB_OK;
+}
+
+const void *ripd_instance_lookup_entry(struct nb_cb_lookup_entry_args *args)
+{
+	const char *vrf_name = args->keys->key[0];
+
+	return rip_lookup_by_vrf_name(vrf_name);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/neighbors/neighbor
+ */
+const void *ripd_instance_state_neighbors_neighbor_get_next(
+	struct nb_cb_get_next_args *args)
+{
+	const struct rip *rip = args->parent_list_entry;
+	struct listnode *node;
+
+	if (args->list_entry == NULL)
+		node = listhead(rip->peer_list);
+	else
+		node = listnextnode((struct listnode *)args->list_entry);
+
+	return node;
+}
+
+int ripd_instance_state_neighbors_neighbor_get_keys(
+	struct nb_cb_get_keys_args *args)
+{
+	const struct listnode *node = args->list_entry;
+	const struct rip_peer *peer = listgetdata(node);
+
+	args->keys->num = 1;
+	(void)inet_ntop(AF_INET, &peer->addr, args->keys->key[0],
+			sizeof(args->keys->key[0]));
+
+	return NB_OK;
+}
+
+const void *ripd_instance_state_neighbors_neighbor_lookup_entry(
+	struct nb_cb_lookup_entry_args *args)
+{
+	const struct rip *rip = args->parent_list_entry;
+	struct in_addr address;
+	struct rip_peer *peer;
+	struct listnode *node;
+
+	yang_str2ipv4(args->keys->key[0], &address);
+
+	for (ALL_LIST_ELEMENTS_RO(rip->peer_list, node, peer)) {
+		if (IPV4_ADDR_SAME(&peer->addr, &address))
+			return node;
+	}
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/neighbors/neighbor/address
+ */
+struct yang_data *ripd_instance_state_neighbors_neighbor_address_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct listnode *node = args->list_entry;
+	const struct rip_peer *peer = listgetdata(node);
+
+	return yang_data_new_ipv4(args->xpath, &peer->addr);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/neighbors/neighbor/last-update
+ */
+struct yang_data *ripd_instance_state_neighbors_neighbor_last_update_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	/* TODO: yang:date-and-time is tricky */
+	return NULL;
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/neighbors/neighbor/bad-packets-rcvd
+ */
+struct yang_data *
+ripd_instance_state_neighbors_neighbor_bad_packets_rcvd_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct listnode *node = args->list_entry;
+	const struct rip_peer *peer = listgetdata(node);
+
+	return yang_data_new_uint32(args->xpath, peer->recv_badpackets);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/neighbors/neighbor/bad-routes-rcvd
+ */
+struct yang_data *
+ripd_instance_state_neighbors_neighbor_bad_routes_rcvd_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct listnode *node = args->list_entry;
+	const struct rip_peer *peer = listgetdata(node);
+
+	return yang_data_new_uint32(args->xpath, peer->recv_badroutes);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route
+ */
+const void *
+ripd_instance_state_routes_route_get_next(struct nb_cb_get_next_args *args)
+{
+	const struct rip *rip = args->parent_list_entry;
+	struct route_node *rn;
+
+	if (args->list_entry == NULL)
+		rn = route_top(rip->table);
+	else
+		rn = route_next((struct route_node *)args->list_entry);
+	/* Optimization: skip empty route nodes. */
+	while (rn && rn->info == NULL)
+		rn = route_next(rn);
+
+	return rn;
+}
+
+int ripd_instance_state_routes_route_get_keys(struct nb_cb_get_keys_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+
+	args->keys->num = 1;
+	(void)prefix2str(&rn->p, args->keys->key[0],
+			 sizeof(args->keys->key[0]));
+
+	return NB_OK;
+}
+
+const void *ripd_instance_state_routes_route_lookup_entry(
+	struct nb_cb_lookup_entry_args *args)
+{
+	const struct rip *rip = args->parent_list_entry;
+	struct prefix prefix;
+	struct route_node *rn;
+
+	yang_str2ipv4p(args->keys->key[0], &prefix);
+
+	rn = route_node_lookup(rip->table, &prefix);
+	if (!rn || !rn->info)
+		return NULL;
+
+	route_unlock_node(rn);
+
+	return rn;
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/prefix
+ */
+struct yang_data *ripd_instance_state_routes_route_prefix_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+	const struct rip_info *rinfo = listnode_head(rn->info);
+
+	assert(rinfo);
+	return yang_data_new_ipv4p(args->xpath, &rinfo->rp->p);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop
+ */
+const void *ripd_instance_state_routes_route_nexthops_nexthop_get_next(
+	struct nb_cb_get_next_args *args)
+{
+	const struct route_node *rn = args->parent_list_entry;
+	const struct listnode *node = args->list_entry;
+
+	assert(rn);
+	if (node)
+		return listnextnode(node);
+	assert(rn->info);
+	return listhead((struct list *)rn->info);
+}
+
+static inline const struct rip_info *get_rip_info(const void *info)
+{
+	return (const struct rip_info *)listgetdata(
+		(const struct listnode *)info);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/nh-type
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_nh_type_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	assert(rinfo);
+	return yang_data_new_enum(args->xpath, rinfo->nh.type);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/protocol
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_protocol_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	assert(rinfo);
+	return yang_data_new_enum(args->xpath, rinfo->type);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/rip-type
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_rip_type_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	assert(rinfo);
+	return yang_data_new_enum(args->xpath, rinfo->sub_type);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/gateway
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_gateway_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	if (rinfo->nh.type != NEXTHOP_TYPE_IPV4 &&
+	    rinfo->nh.type != NEXTHOP_TYPE_IPV4_IFINDEX)
+		return NULL;
+
+	return yang_data_new_ipv4(args->xpath, &rinfo->nh.gate.ipv4);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/interface
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_interface_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+	const struct rip *rip = rip_info_get_instance(rinfo);
+
+	if (rinfo->nh.type != NEXTHOP_TYPE_IFINDEX &&
+	    rinfo->nh.type != NEXTHOP_TYPE_IPV4_IFINDEX)
+		return NULL;
+
+	return yang_data_new_string(
+		args->xpath,
+		ifindex2ifname(rinfo->nh.ifindex, rip->vrf->vrf_id));
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/from
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_from_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	if (rinfo->type != ZEBRA_ROUTE_RIP || rinfo->sub_type != RIP_ROUTE_RTE)
+		return NULL;
+
+	return yang_data_new_ipv4(args->xpath, &rinfo->from);
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/tag
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_tag_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	return yang_data_new_uint32(args->xpath, rinfo->tag);
+}
+
+/*
+ * XPath:
+ * /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/external-metric
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_external_metric_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+
+	if ((rinfo->type == ZEBRA_ROUTE_RIP &&
+	     rinfo->sub_type == RIP_ROUTE_RTE) ||
+	    rinfo->metric == RIP_METRIC_INFINITY || rinfo->external_metric == 0)
+		return NULL;
+	return yang_data_new_uint32(args->xpath, rinfo->external_metric);
+}
+
+/*
+ * XPath:
+ * /frr-ripd:ripd/instance/state/routes/route/nexthops/nexthop/expire-time
+ */
+struct yang_data *
+ripd_instance_state_routes_route_nexthops_nexthop_expire_time_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct rip_info *rinfo = get_rip_info(args->list_entry);
+	struct event *event;
+
+	if ((event = rinfo->t_timeout) == NULL)
+		event = rinfo->t_garbage_collect;
+	if (!event)
+		return NULL;
+
+	return yang_data_new_uint32(args->xpath,
+				    event_timer_remain_second(event));
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/next-hop
+ */
+struct yang_data *ripd_instance_state_routes_route_next_hop_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+	const struct rip_info *rinfo = listnode_head(rn->info);
+
+	switch (rinfo->nh.type) {
+	case NEXTHOP_TYPE_IPV4:
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+		return yang_data_new_ipv4(args->xpath, &rinfo->nh.gate.ipv4);
+	case NEXTHOP_TYPE_IFINDEX:
+	case NEXTHOP_TYPE_IPV6:
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+	case NEXTHOP_TYPE_BLACKHOLE:
+		return NULL;
+	}
+
+	assert(!"Reached end of function where we do not expect to reach");
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/interface
+ */
+struct yang_data *ripd_instance_state_routes_route_interface_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+	const struct rip_info *rinfo = listnode_head(rn->info);
+	const struct rip *rip = rip_info_get_instance(rinfo);
+
+	switch (rinfo->nh.type) {
+	case NEXTHOP_TYPE_IFINDEX:
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+		return yang_data_new_string(
+			args->xpath,
+			ifindex2ifname(rinfo->nh.ifindex, rip->vrf->vrf_id));
+	case NEXTHOP_TYPE_IPV4:
+	case NEXTHOP_TYPE_IPV6:
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+	case NEXTHOP_TYPE_BLACKHOLE:
+		return NULL;
+	}
+
+	assert(!"Reached end of function where we do not expect to reach");
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/state/routes/route/metric
+ */
+struct yang_data *ripd_instance_state_routes_route_metric_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+	const struct rip_info *rinfo = listnode_head(rn->info);
+
+	return yang_data_new_uint8(args->xpath, rinfo->metric);
+}