99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2016 Intel Corporation
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*/
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#ifndef __L3FWD_LPM_H__
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#define __L3FWD_LPM_H__
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static __rte_always_inline void
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l3fwd_lpm_simple_forward(struct rte_mbuf *m, uint16_t portid,
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struct lcore_conf *qconf)
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{
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struct ether_hdr *eth_hdr;
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struct ipv4_hdr *ipv4_hdr;
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uint16_t dst_port;
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eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
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if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
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/* Handle IPv4 headers.*/
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ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
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sizeof(struct ether_hdr));
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#ifdef DO_RFC_1812_CHECKS
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/* Check to make sure the packet is valid (RFC1812) */
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if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
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rte_pktmbuf_free(m);
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return;
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}
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#endif
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dst_port = lpm_get_ipv4_dst_port(ipv4_hdr, portid,
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qconf->ipv4_lookup_struct);
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if (dst_port >= RTE_MAX_ETHPORTS ||
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(enabled_port_mask & 1 << dst_port) == 0)
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dst_port = portid;
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#ifdef DO_RFC_1812_CHECKS
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/* Update time to live and header checksum */
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--(ipv4_hdr->time_to_live);
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++(ipv4_hdr->hdr_checksum);
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#endif
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/* dst addr */
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*(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
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/* src addr */
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ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
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send_single_packet(qconf, m, dst_port);
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} else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
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/* Handle IPv6 headers.*/
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struct ipv6_hdr *ipv6_hdr;
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ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
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sizeof(struct ether_hdr));
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dst_port = lpm_get_ipv6_dst_port(ipv6_hdr, portid,
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qconf->ipv6_lookup_struct);
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if (dst_port >= RTE_MAX_ETHPORTS ||
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(enabled_port_mask & 1 << dst_port) == 0)
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dst_port = portid;
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/* dst addr */
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*(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
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/* src addr */
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ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
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send_single_packet(qconf, m, dst_port);
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} else {
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/* Free the mbuf that contains non-IPV4/IPV6 packet */
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rte_pktmbuf_free(m);
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}
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}
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static inline void
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l3fwd_lpm_no_opt_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
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uint16_t portid, struct lcore_conf *qconf)
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{
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int32_t j;
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/* Prefetch first packets */
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for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++)
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rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[j], void *));
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/* Prefetch and forward already prefetched packets. */
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for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
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rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
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j + PREFETCH_OFFSET], void *));
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l3fwd_lpm_simple_forward(pkts_burst[j], portid, qconf);
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}
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/* Forward remaining prefetched packets */
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for (; j < nb_rx; j++)
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l3fwd_lpm_simple_forward(pkts_burst[j], portid, qconf);
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}
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#endif /* __L3FWD_LPM_H__ */
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