Hi Thomas,
This series is acked by node maintainer. Please consider merging.
CI is failing in the doc build, but I believe it is picking up wrong
l3_forward_graph.rst file, as with this latest patch the string "Add route to
ip4 graph infra." has been removed.
Thanks,
Amit Shukla
> -----Original Message-----
> From: Nithin Dabilpuram <nithind1...@gmail.com>
> Sent: Thursday, June 1, 2023 7:55 AM
> To: Amit Prakash Shukla <amitpraka...@marvell.com>
> Cc: Jerin Jacob Kollanukkaran <jer...@marvell.com>; Kiran Kumar
> Kokkilagadda <kirankum...@marvell.com>; Nithin Kumar Dabilpuram
> <ndabilpu...@marvell.com>; Pavan Nikhilesh Bhagavatula
> <pbhagavat...@marvell.com>; dev@dpdk.org; Sunil Kumar Kori
> <sk...@marvell.com>
> Subject: [EXT] Re: [PATCH v3 1/3] lib: add IPv6 lookup node
>
> External Email
>
> ----------------------------------------------------------------------
> Acked-by: Nithin Dabilpuram<ndabilpu...@marvell.com>
>
> On Wed, May 31, 2023 at 5:08 PM Amit Prakash Shukla
> <amitpraka...@marvell.com> wrote:
> >
> > From: Sunil Kumar Kori <sk...@marvell.com>
> >
> > Similar to IPv4 lookup node, patch adds IPv6 lookup node.
> >
> > Signed-off-by: Sunil Kumar Kori <sk...@marvell.com>
> > Signed-off-by: Amit Prakash Shukla <amitpraka...@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
> >
