+int
+rte_node_ip4_route_add(uint32_t ip, uint8_t depth, uint16_t next_hop,
+ enum rte_node_ip4_lookup_next next_node)
+{
+ char abuf[INET6_ADDRSTRLEN];
+ struct in_addr in;
+ uint8_t socket;
+ uint32_t val;
+ int ret;
+
+ in.s_addr = htonl(ip);
+ inet_ntop(AF_INET, &in, abuf, sizeof(abuf));
+ /* Embedded next node id into 24 bit next hop */
+ val = ((next_node << 16) | next_hop) & ((1ull << 24) - 1);
+ node_dbg("ip4_lookup", "LPM: Adding route %s / %d nh (0x%x)", abuf,
+ depth, val);
+
+ for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
+ if (!ip4_lookup_nm.lpm_tbl[socket])
+ continue;
+
+ ret = rte_lpm_add(ip4_lookup_nm.lpm_tbl[socket],
+ ip, depth, val);
+ if (ret < 0) {
+ node_err("ip4_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_lpm(struct ip4_lookup_node_main *nm, int socket)
+{
+ struct rte_lpm_config config_ipv4;
+ char s[RTE_LPM_NAMESIZE];
+
+ /* One LPM table per socket */
+ if (nm->lpm_tbl[socket])
+ return 0;
+
+ /* create the LPM table */
+ config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
+ config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
+ config_ipv4.flags = 0;
+ snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socket);
+ nm->lpm_tbl[socket] = rte_lpm_create(s, socket, &config_ipv4);
+ if (nm->lpm_tbl[socket] == NULL)
+ return -rte_errno;
+
+ return 0;
+}
+