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34 #ifndef __L3FWD_LPM_H__
35 #define __L3FWD_LPM_H__
38 lpm_get_ipv4_dst_port(void *ipv4_hdr, uint8_t portid, void *lookup_struct)
41 struct rte_lpm *ipv4_l3fwd_lookup_struct =
42 (struct rte_lpm *)lookup_struct;
44 return (uint8_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
45 rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
46 &next_hop) == 0) ? next_hop : portid);
50 lpm_get_ipv6_dst_port(void *ipv6_hdr, uint8_t portid, void *lookup_struct)
53 struct rte_lpm6 *ipv6_l3fwd_lookup_struct =
54 (struct rte_lpm6 *)lookup_struct;
56 return (uint8_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
57 ((struct ipv6_hdr *)ipv6_hdr)->dst_addr,
58 &next_hop) == 0) ? next_hop : portid);
61 static inline __attribute__((always_inline)) void
62 l3fwd_lpm_simple_forward(struct rte_mbuf *m, uint8_t portid,
63 struct lcore_conf *qconf)
65 struct ether_hdr *eth_hdr;
66 struct ipv4_hdr *ipv4_hdr;
69 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
71 if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
72 /* Handle IPv4 headers.*/
73 ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
74 sizeof(struct ether_hdr));
76 #ifdef DO_RFC_1812_CHECKS
77 /* Check to make sure the packet is valid (RFC1812) */
78 if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
83 dst_port = lpm_get_ipv4_dst_port(ipv4_hdr, portid,
84 qconf->ipv4_lookup_struct);
86 if (dst_port >= RTE_MAX_ETHPORTS ||
87 (enabled_port_mask & 1 << dst_port) == 0)
90 #ifdef DO_RFC_1812_CHECKS
91 /* Update time to live and header checksum */
92 --(ipv4_hdr->time_to_live);
93 ++(ipv4_hdr->hdr_checksum);
96 *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
99 ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
101 send_single_packet(qconf, m, dst_port);
102 } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
103 /* Handle IPv6 headers.*/
104 struct ipv6_hdr *ipv6_hdr;
106 ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
107 sizeof(struct ether_hdr));
109 dst_port = lpm_get_ipv6_dst_port(ipv6_hdr, portid,
110 qconf->ipv6_lookup_struct);
112 if (dst_port >= RTE_MAX_ETHPORTS ||
113 (enabled_port_mask & 1 << dst_port) == 0)
117 *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
120 ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
122 send_single_packet(qconf, m, dst_port);
124 /* Free the mbuf that contains non-IPV4/IPV6 packet */
130 l3fwd_lpm_no_opt_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
131 uint8_t portid, struct lcore_conf *qconf)
135 /* Prefetch first packets */
136 for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++)
137 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[j], void *));
139 /* Prefetch and forward already prefetched packets. */
140 for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
141 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
142 j + PREFETCH_OFFSET], void *));
143 l3fwd_lpm_simple_forward(pkts_burst[j], portid, qconf);
146 /* Forward remaining prefetched packets */
147 for (; j < nb_rx; j++)
148 l3fwd_lpm_simple_forward(pkts_burst[j], portid, qconf);
151 #endif /* __L3FWD_LPM_H__ */