[PATCH v3 1/3] lib: add IPv6 lookup node

[Amit Prakash Shukla <amitprakashs@marvell.com>]

From: Sunil Kumar Kori <skori@marvell.com>

Similar to IPv4 lookup node, patch adds IPv6 lookup
node.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Signed-off-by: Amit Prakash Shukla <amitprakashs@marvell.com>
---
v2:
- Performance related changes

v3:
- Removing redundant dynamic variable

 doc/guides/prog_guide/graph_lib.rst |  13 +
 lib/node/ip6_lookup.c               | 372 ++++++++++++++++++++++++++++
 lib/node/meson.build                |   3 +-
 lib/node/node_private.h             |   2 +-
 lib/node/pkt_cls.c                  |  14 ++
 lib/node/pkt_cls_priv.h             |   1 +
 lib/node/rte_node_ip6_api.h         |  80 ++++++
 lib/node/version.map                |   2 +
 8 files changed, 485 insertions(+), 2 deletions(-)
 create mode 100644 lib/node/ip6_lookup.c
 create mode 100644 lib/node/rte_node_ip6_api.h

diff --git a/doc/guides/prog_guide/graph_lib.rst b/doc/guides/prog_guide/graph_lib.rst
index 1cfdc86433..1f70d63628 100644
--- a/doc/guides/prog_guide/graph_lib.rst
+++ b/doc/guides/prog_guide/graph_lib.rst
@@ -388,6 +388,19 @@ to determine the L2 header to be written to the packet before sending
 the packet out to a particular ethdev_tx node.
 ``rte_node_ip4_rewrite_add()`` is control path API to add next-hop info.
 
+ip6_lookup
+~~~~~~~~~~
+This node is an intermediate node that does LPM lookup for the received
+ipv6 packets and the result determines each packets next node.
+
+On successful LPM lookup, the result contains the ``next_node`` id and
+``next-hop`` id with which the packet needs to be further processed.
+
+On LPM lookup failure, objects are redirected to pkt_drop node.
+``rte_node_ip6_route_add()`` is control path API to add ipv6 routes.
+To achieve home run, node use ``rte_node_stream_move()`` as mentioned in above
+sections.
+
 null
 ~~~~
 This node ignores the set of objects passed to it and reports that all are
diff --git a/lib/node/ip6_lookup.c b/lib/node/ip6_lookup.c
new file mode 100644
index 0000000000..e4bbc7ed67
--- /dev/null
+++ b/lib/node/ip6_lookup.c
@@ -0,0 +1,372 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2023 Marvell.
+ */
+
+#include <arpa/inet.h>
+#include <sys/socket.h>
+
+#include <rte_ethdev.h>
+#include <rte_ether.h>
+#include <rte_graph.h>
+#include <rte_graph_worker.h>
+#include <rte_ip.h>
+#include <rte_lpm6.h>
+
+#include "rte_node_ip6_api.h"
+
+#include "node_private.h"
+
+#define IPV6_L3FWD_LPM_MAX_RULES 1024
+#define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 8)
+
+/* IP6 Lookup global data struct */
+struct ip6_lookup_node_main {
+	struct rte_lpm6 *lpm_tbl[RTE_MAX_NUMA_NODES];
+};
+
+struct ip6_lookup_node_ctx {
+	/* Socket's LPM table */
+	struct rte_lpm6 *lpm6;
+	/* Dynamic offset to mbuf priv1 */
+	int mbuf_priv1_off;
+};
+
+static struct ip6_lookup_node_main ip6_lookup_nm;
+
+#define IP6_LOOKUP_NODE_LPM(ctx) \
+	(((struct ip6_lookup_node_ctx *)ctx)->lpm6)
+
+#define IP6_LOOKUP_NODE_PRIV1_OFF(ctx) \
+	(((struct ip6_lookup_node_ctx *)ctx)->mbuf_priv1_off)
+
+static uint16_t
+ip6_lookup_node_process_scalar(struct rte_graph *graph, struct rte_node *node,
+			void **objs, uint16_t nb_objs)
+{
+	struct rte_mbuf *mbuf0, *mbuf1, *mbuf2, *mbuf3, **pkts;
+	struct rte_lpm6 *lpm6 = IP6_LOOKUP_NODE_LPM(node->ctx);
+	const int dyn = IP6_LOOKUP_NODE_PRIV1_OFF(node->ctx);
+	struct rte_ipv6_hdr *ipv6_hdr;
+	void **to_next, **from;
+	uint16_t last_spec = 0;
+	rte_edge_t next_index;
+	uint16_t n_left_from;
+	uint16_t held = 0;
+	uint32_t drop_nh;
+	int i, rc;
+
+	/* Speculative next */
+	next_index = RTE_NODE_IP6_LOOKUP_NEXT_REWRITE;
+	/* Drop node */
+	drop_nh = ((uint32_t)RTE_NODE_IP6_LOOKUP_NEXT_PKT_DROP) << 16;
+
+	pkts = (struct rte_mbuf **)objs;
+	from = objs;
+	n_left_from = nb_objs;
+
+	for (i = OBJS_PER_CLINE; i < RTE_GRAPH_BURST_SIZE; i += OBJS_PER_CLINE)
+		rte_prefetch0(&objs[i]);
+
+	for (i = 0; i < 4 && i < n_left_from; i++)
+		rte_prefetch0(rte_pktmbuf_mtod_offset(pkts[i], void *,
+						sizeof(struct rte_ether_hdr)));
+
+	/* Get stream for the speculated next node */
+	to_next = rte_node_next_stream_get(graph, node, next_index, nb_objs);
+	while (n_left_from >= 4) {
+		uint8_t ip_batch[4][16];
+		int32_t next_hop[4];
+		uint16_t next[4];
+
+#if RTE_GRAPH_BURST_SIZE > 64
+		/* Prefetch next-next mbufs */
+		if (likely(n_left_from > 11)) {
+			rte_prefetch0(pkts[8]);
+			rte_prefetch0(pkts[9]);
+			rte_prefetch0(pkts[10]);
+			rte_prefetch0(pkts[11]);
+		}
+#endif
+		/* Prefetch next mbuf data */
+		if (likely(n_left_from > 7)) {
+			rte_prefetch0(rte_pktmbuf_mtod_offset(pkts[4], void *,
+						sizeof(struct rte_ether_hdr)));
+			rte_prefetch0(rte_pktmbuf_mtod_offset(pkts[5], void *,
+						sizeof(struct rte_ether_hdr)));
+			rte_prefetch0(rte_pktmbuf_mtod_offset(pkts[6], void *,
+						sizeof(struct rte_ether_hdr)));
+			rte_prefetch0(rte_pktmbuf_mtod_offset(pkts[7], void *,
+						sizeof(struct rte_ether_hdr)));
+		}
+
+		mbuf0 = pkts[0];
+		mbuf1 = pkts[1];
+		mbuf2 = pkts[2];
+		mbuf3 = pkts[3];
+
+		pkts += 4;
+		n_left_from -= 4;
+
+		/* Extract DIP of mbuf0 */
+		ipv6_hdr = rte_pktmbuf_mtod_offset(mbuf0, struct rte_ipv6_hdr *,
+				sizeof(struct rte_ether_hdr));
+		/* Extract hop_limits as ipv6 hdr is in cache */
+		node_mbuf_priv1(mbuf0, dyn)->ttl = ipv6_hdr->hop_limits;
+		rte_memcpy(ip_batch[0], ipv6_hdr->dst_addr, 16);
+
+		/* Extract DIP of mbuf1 */
+		ipv6_hdr = rte_pktmbuf_mtod_offset(mbuf1, struct rte_ipv6_hdr *,
+				sizeof(struct rte_ether_hdr));
+		/* Extract hop_limits as ipv6 hdr is in cache */
+		node_mbuf_priv1(mbuf1, dyn)->ttl = ipv6_hdr->hop_limits;
+		rte_memcpy(ip_batch[1], ipv6_hdr->dst_addr, 16);
+
+		/* Extract DIP of mbuf2 */
+		ipv6_hdr = rte_pktmbuf_mtod_offset(mbuf2, struct rte_ipv6_hdr *,
+				sizeof(struct rte_ether_hdr));
+		/* Extract hop_limits as ipv6 hdr is in cache */
+		node_mbuf_priv1(mbuf2, dyn)->ttl = ipv6_hdr->hop_limits;
+		rte_memcpy(ip_batch[2], ipv6_hdr->dst_addr, 16);
+
+		/* Extract DIP of mbuf3 */
+		ipv6_hdr = rte_pktmbuf_mtod_offset(mbuf3, struct rte_ipv6_hdr *,
+				sizeof(struct rte_ether_hdr));
+		/* Extract hop_limits as ipv6 hdr is in cache */
+		node_mbuf_priv1(mbuf3, dyn)->ttl = ipv6_hdr->hop_limits;
+		rte_memcpy(ip_batch[3], ipv6_hdr->dst_addr, 16);
+
+		rc = rte_lpm6_lookup_bulk_func(lpm6, ip_batch, next_hop, 4);
+
+		next_hop[0] = (next_hop[0] < 0) ? (int32_t)drop_nh : next_hop[0];
+		node_mbuf_priv1(mbuf0, dyn)->nh = (uint16_t)next_hop[0];
+		next[0] = (uint16_t)(next_hop[0] >> 16);
+
+		next_hop[1] = (next_hop[1] < 0) ? (int32_t)drop_nh : next_hop[1];
+		node_mbuf_priv1(mbuf1, dyn)->nh = (uint16_t)next_hop[1];
+		next[1] = (uint16_t)(next_hop[1] >> 16);
+
+		next_hop[2] = (next_hop[2] < 0) ? (int32_t)drop_nh : next_hop[2];
+		node_mbuf_priv1(mbuf2, dyn)->nh = (uint16_t)next_hop[2];
+		next[2] = (uint16_t)(next_hop[2] >> 16);
+
+		next_hop[3] = (next_hop[3] < 0) ? (int32_t)drop_nh : next_hop[3];
+		node_mbuf_priv1(mbuf3, dyn)->nh = (uint16_t)next_hop[3];
+		next[3] = (uint16_t)(next_hop[3] >> 16);
+
+		rte_edge_t fix_spec = ((next_index == next[0]) &&
+					(next_index == next[1]) &&
+					(next_index == next[2]) &&
+					(next_index == next[3]));
+
+		if (unlikely(fix_spec == 0)) {
+			/* Copy things successfully speculated till now */
+			rte_memcpy(to_next, from, last_spec * sizeof(from[0]));
+			from += last_spec;
+			to_next += last_spec;
+			held += last_spec;
+			last_spec = 0;
+
+			/* Next0 */
+			if (next_index == next[0]) {
+				to_next[0] = from[0];
+				to_next++;
+				held++;
+			} else {
+				rte_node_enqueue_x1(graph, node, next[0], from[0]);
+			}
+
+			/* Next1 */
+			if (next_index == next[1]) {
+				to_next[0] = from[1];
+				to_next++;
+				held++;
+			} else {
+				rte_node_enqueue_x1(graph, node, next[1], from[1]);
+			}
+
+			/* Next2 */
+			if (next_index == next[2]) {
+				to_next[0] = from[2];
+				to_next++;
+				held++;
+			} else {
+				rte_node_enqueue_x1(graph, node, next[2], from[2]);
+			}
+
+			/* Next3 */
+			if (next_index == next[3]) {
+				to_next[0] = from[3];
+				to_next++;
+				held++;
+			} else {
+				rte_node_enqueue_x1(graph, node, next[3], from[3]);
+			}
+
+			from += 4;
+		} else {
+			last_spec += 4;
+		}
+	}
+
+	while (n_left_from > 0) {
+		uint32_t next_hop;
+		uint16_t next0;
+
+		mbuf0 = pkts[0];
+
+		pkts += 1;
+		n_left_from -= 1;
+
+		/* Extract DIP of mbuf0 */
+		ipv6_hdr = rte_pktmbuf_mtod_offset(mbuf0, struct rte_ipv6_hdr *,
+						sizeof(struct rte_ether_hdr));
+		/* Extract ttl as ipv6 hdr is in cache */
+		node_mbuf_priv1(mbuf0, dyn)->ttl = ipv6_hdr->hop_limits;
+
+		rc = rte_lpm6_lookup(lpm6, ipv6_hdr->dst_addr, &next_hop);
+		next_hop = (rc == 0) ? next_hop : drop_nh;
+
+		node_mbuf_priv1(mbuf0, dyn)->nh = (uint16_t)next_hop;
+		next_hop = next_hop >> 16;
+		next0 = (uint16_t)next_hop;
+
+		if (unlikely(next_index ^ next0)) {
+			/* Copy things successfully speculated till now */
+			rte_memcpy(to_next, from, last_spec * sizeof(from[0]));
+			from += last_spec;
+			to_next += last_spec;
+			held += last_spec;
+			last_spec = 0;
+
+			rte_node_enqueue_x1(graph, node, next0, from[0]);
+			from += 1;
+		} else {
+			last_spec += 1;
+		}
+	}
+
+	/* !!! Home run !!! */
+	if (likely(last_spec == nb_objs)) {
+		rte_node_next_stream_move(graph, node, next_index);
+		return nb_objs;
+	}
+	held += last_spec;
+	rte_memcpy(to_next, from, last_spec * sizeof(from[0]));
+	rte_node_next_stream_put(graph, node, next_index, held);
+
+	return nb_objs;
+}
+
+int
+rte_node_ip6_route_add(const uint8_t *ip, uint8_t depth, uint16_t next_hop,
+		       enum rte_node_ip6_lookup_next next_node)
+{
+	char abuf[INET6_ADDRSTRLEN];
+	struct in6_addr in6;
+	uint8_t socket;
+	uint32_t val;
+	int ret;
+
+	memcpy(in6.s6_addr, ip, RTE_LPM6_IPV6_ADDR_SIZE);
+	inet_ntop(AF_INET6, &in6, abuf, sizeof(abuf));
+	/* Embedded next node id into 24 bit next hop */
+	val = ((next_node << 16) | next_hop) & ((1ull << 24) - 1);
+	node_dbg("ip6_lookup", "LPM: Adding route %s / %d nh (0x%x)", abuf,
+		 depth, val);
+
+	for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+		if (!ip6_lookup_nm.lpm_tbl[socket])
+			continue;
+
+		ret = rte_lpm6_add(ip6_lookup_nm.lpm_tbl[socket], ip, depth,
+				   val);
+		if (ret < 0) {
+			node_err("ip6_lookup",
+				 "Unable to add entry %s / %d nh (%x) to LPM "
+				 "table on sock %d, rc=%d\n",
+				 abuf, depth, val, socket, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int
+setup_lpm6(struct ip6_lookup_node_main *nm, int socket)
+{
+	struct rte_lpm6_config config_ipv6;
+	char s[RTE_LPM6_NAMESIZE];
+
+	/* One LPM table per socket */
+	if (nm->lpm_tbl[socket])
+		return 0;
+
+	/* create the LPM table */
+	config_ipv6.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
+	config_ipv6.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
+	config_ipv6.flags = 0;
+	snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socket);
+	nm->lpm_tbl[socket] = rte_lpm6_create(s, socket, &config_ipv6);
+	if (nm->lpm_tbl[socket] == NULL)
+		return -rte_errno;
+
+	return 0;
+}
+
+static int
+ip6_lookup_node_init(const struct rte_graph *graph, struct rte_node *node)
+{
+	uint16_t socket, lcore_id;
+	static uint8_t init_once;
+	int rc;
+
+	RTE_SET_USED(graph);
+	RTE_BUILD_BUG_ON(sizeof(struct ip6_lookup_node_ctx) > RTE_NODE_CTX_SZ);
+
+	if (!init_once) {
+		node_mbuf_priv1_dynfield_offset =
+			rte_mbuf_dynfield_register(
+				&node_mbuf_priv1_dynfield_desc);
+		if (node_mbuf_priv1_dynfield_offset < 0)
+			return -rte_errno;
+
+		/* Setup LPM tables for all sockets */
+		RTE_LCORE_FOREACH(lcore_id)
+		{
+			socket = rte_lcore_to_socket_id(lcore_id);
+			rc = setup_lpm6(&ip6_lookup_nm, socket);
+			if (rc) {
+				node_err("ip6_lookup",
+					 "Failed to setup lpm6 tbl for "
+					 "sock %u, rc=%d", socket, rc);
+				return rc;
+			}
+		}
+		init_once = 1;
+	}
+
+	/* Update socket's LPM and mbuf dyn priv1 offset in node ctx */
+	IP6_LOOKUP_NODE_LPM(node->ctx) = ip6_lookup_nm.lpm_tbl[graph->socket];
+	IP6_LOOKUP_NODE_PRIV1_OFF(node->ctx) =
+					node_mbuf_priv1_dynfield_offset;
+
+	node_dbg("ip6_lookup", "Initialized ip6_lookup node");
+
+	return 0;
+}
+
+static struct rte_node_register ip6_lookup_node = {
+	.process = ip6_lookup_node_process_scalar,
+	.name = "ip6_lookup",
+
+	.init = ip6_lookup_node_init,
+
+	.nb_edges = RTE_NODE_IP6_LOOKUP_NEXT_MAX,
+	.next_nodes = {
+		[RTE_NODE_IP6_LOOKUP_NEXT_REWRITE] = "ip6_rewrite",
+		[RTE_NODE_IP6_LOOKUP_NEXT_PKT_DROP] = "pkt_drop",
+	},
+};
+
+RTE_NODE_REGISTER(ip6_lookup_node);
diff --git a/lib/node/meson.build b/lib/node/meson.build
index dbdf673c86..cd30847a0b 100644
--- a/lib/node/meson.build
+++ b/lib/node/meson.build
@@ -12,13 +12,14 @@ sources = files(
         'ethdev_rx.c',
         'ethdev_tx.c',
         'ip4_lookup.c',
+        'ip6_lookup.c',
         'ip4_rewrite.c',
         'log.c',
         'null.c',
         'pkt_cls.c',
         'pkt_drop.c',
 )
-headers = files('rte_node_ip4_api.h', 'rte_node_eth_api.h')
+headers = files('rte_node_ip4_api.h', 'rte_node_ip6_api.h', 'rte_node_eth_api.h')
 # Strict-aliasing rules are violated by uint8_t[] to context size casts.
 cflags += '-fno-strict-aliasing'
 deps += ['graph', 'mbuf', 'lpm', 'ethdev', 'mempool', 'cryptodev']
diff --git a/lib/node/node_private.h b/lib/node/node_private.h
index 8c73d5dc10..26135aaa5b 100644
--- a/lib/node/node_private.h
+++ b/lib/node/node_private.h
@@ -26,7 +26,7 @@ extern int rte_node_logtype;
  */
 struct node_mbuf_priv1 {
 	union {
-		/* IP4 rewrite */
+		/* IP4/IP6 rewrite */
 		struct {
 			uint16_t nh;
 			uint16_t ttl;
diff --git a/lib/node/pkt_cls.c b/lib/node/pkt_cls.c
index 3e75f2cf78..a8302b8d28 100644
--- a/lib/node/pkt_cls.c
+++ b/lib/node/pkt_cls.c
@@ -24,6 +24,19 @@ static const uint8_t p_nxt[256] __rte_cache_aligned = {
 
 	[RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L2_ETHER] =
 		PKT_CLS_NEXT_IP4_LOOKUP,
+
+	[RTE_PTYPE_L3_IPV6] = PKT_CLS_NEXT_IP6_LOOKUP,
+
+	[RTE_PTYPE_L3_IPV6_EXT] = PKT_CLS_NEXT_IP6_LOOKUP,
+
+	[RTE_PTYPE_L3_IPV6_EXT_UNKNOWN] = PKT_CLS_NEXT_IP6_LOOKUP,
+
+	[RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L2_ETHER] = PKT_CLS_NEXT_IP6_LOOKUP,
+
+	[RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L2_ETHER] = PKT_CLS_NEXT_IP6_LOOKUP,
+
+	[RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L2_ETHER] =
+		PKT_CLS_NEXT_IP6_LOOKUP,
 };
 
 static uint16_t
@@ -216,6 +229,7 @@ struct rte_node_register pkt_cls_node = {
 		/* Pkt drop node starts at '0' */
 		[PKT_CLS_NEXT_PKT_DROP] = "pkt_drop",
 		[PKT_CLS_NEXT_IP4_LOOKUP] = "ip4_lookup",
+		[PKT_CLS_NEXT_IP6_LOOKUP] = "ip6_lookup",
 	},
 };
 RTE_NODE_REGISTER(pkt_cls_node);
diff --git a/lib/node/pkt_cls_priv.h b/lib/node/pkt_cls_priv.h
index 6f5374f0be..16135807a1 100644
--- a/lib/node/pkt_cls_priv.h
+++ b/lib/node/pkt_cls_priv.h
@@ -13,6 +13,7 @@ struct pkt_cls_node_ctx {
 enum pkt_cls_next_nodes {
 	PKT_CLS_NEXT_PKT_DROP,
 	PKT_CLS_NEXT_IP4_LOOKUP,
+	PKT_CLS_NEXT_IP6_LOOKUP,
 	PKT_CLS_NEXT_MAX,
 };
 
diff --git a/lib/node/rte_node_ip6_api.h b/lib/node/rte_node_ip6_api.h
new file mode 100644
index 0000000000..1696ed154d
--- /dev/null
+++ b/lib/node/rte_node_ip6_api.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2023 Marvell.
+ */
+
+#ifndef __INCLUDE_RTE_NODE_IP6_API_H__
+#define __INCLUDE_RTE_NODE_IP6_API_H__
+
+/**
+ * @file rte_node_ip6_api.h
+ *
+ * @warning
+ * @b EXPERIMENTAL:
+ * All functions in this file may be changed or removed without prior notice.
+ *
+ * This API allows to do control path functions of ip6_* nodes
+ * like ip6_lookup, ip6_rewrite.
+ *
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rte_common.h>
+#include <rte_compat.h>
+
+/**
+ * IP6 lookup next nodes.
+ */
+enum rte_node_ip6_lookup_next {
+	RTE_NODE_IP6_LOOKUP_NEXT_REWRITE,
+	/**< Rewrite node. */
+	RTE_NODE_IP6_LOOKUP_NEXT_PKT_DROP,
+	/**< Packet drop node. */
+	RTE_NODE_IP6_LOOKUP_NEXT_MAX,
+	/**< Number of next nodes of lookup node. */
+};
+
+/**
+ * Add ipv6 route to lookup table.
+ *
+ * @param ip
+ *   IPv6 address of route to be added.
+ * @param depth
+ *   Depth of the rule to be added.
+ * @param next_hop
+ *   Next hop id of the rule result to be added.
+ * @param next_node
+ *   Next node to redirect traffic to.
+ *
+ * @return
+ *   0 on success, negative otherwise.
+ */
+__rte_experimental
+int rte_node_ip6_route_add(const uint8_t *ip, uint8_t depth, uint16_t next_hop,
+			   enum rte_node_ip6_lookup_next next_node);
+
+/**
+ * Add a next hop's rewrite data.
+ *
+ * @param next_hop
+ *   Next hop id to add rewrite data to.
+ * @param rewrite_data
+ *   Rewrite data.
+ * @param rewrite_len
+ *   Length of rewrite data.
+ * @param dst_port
+ *   Destination port to redirect traffic to.
+ *
+ * @return
+ *   0 on success, negative otherwise.
+ */
+__rte_experimental
+int rte_node_ip6_rewrite_add(uint16_t next_hop, uint8_t *rewrite_data,
+			     uint8_t rewrite_len, uint16_t dst_port);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INCLUDE_RTE_NODE_IP6_API_H__ */
diff --git a/lib/node/version.map b/lib/node/version.map
index a799b0d389..40df308bfe 100644
--- a/lib/node/version.map
+++ b/lib/node/version.map
@@ -4,6 +4,8 @@ EXPERIMENTAL {
 	rte_node_eth_config;
 	rte_node_ip4_route_add;
 	rte_node_ip4_rewrite_add;
+	rte_node_ip6_rewrite_add;
+	rte_node_ip6_route_add;
 	rte_node_logtype;
 	local: *;
 };
-- 
2.25.1