eal: introduce macro for always inline

[dpdk.git] / examples / l3fwd / l3fwd_em.h

diff --git a/examples/l3fwd/l3fwd_em.h b/examples/l3fwd/l3fwd_em.h
index 3232d0a..d509a1f 100644 (file)
--- a/examples/l3fwd/l3fwd_em.h
+++ b/examples/l3fwd/l3fwd_em.h
@@ -34,6 +34,78 @@
 #ifndef __L3FWD_EM_H__
 #define __L3FWD_EM_H__
 
+static __rte_always_inline void
+l3fwd_em_simple_forward(struct rte_mbuf *m, uint8_t portid,
+               struct lcore_conf *qconf)
+{
+       struct ether_hdr *eth_hdr;
+       struct ipv4_hdr *ipv4_hdr;
+       uint8_t dst_port;
+       uint32_t tcp_or_udp;
+       uint32_t l3_ptypes;
+
+       eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+       tcp_or_udp = m->packet_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
+       l3_ptypes = m->packet_type & RTE_PTYPE_L3_MASK;
+
+       if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV4)) {
+               /* Handle IPv4 headers.*/
+               ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
+                                                  sizeof(struct ether_hdr));
+
+#ifdef DO_RFC_1812_CHECKS
+               /* Check to make sure the packet is valid (RFC1812) */
+               if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
+                       rte_pktmbuf_free(m);
+                       return;
+               }
+#endif
+               dst_port = em_get_ipv4_dst_port(ipv4_hdr, portid,
+                                               qconf->ipv4_lookup_struct);
+
+               if (dst_port >= RTE_MAX_ETHPORTS ||
+                       (enabled_port_mask & 1 << dst_port) == 0)
+                       dst_port = portid;
+
+#ifdef DO_RFC_1812_CHECKS
+               /* Update time to live and header checksum */
+               --(ipv4_hdr->time_to_live);
+               ++(ipv4_hdr->hdr_checksum);
+#endif
+               /* dst addr */
+               *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[dst_port];
+
+               /* src addr */
+               ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
+
+               send_single_packet(qconf, m, dst_port);
+       } else if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV6)) {
+               /* Handle IPv6 headers.*/
+               struct ipv6_hdr *ipv6_hdr;
+
+               ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
+                                                  sizeof(struct ether_hdr));
+
+               dst_port = em_get_ipv6_dst_port(ipv6_hdr, portid,
+                                       qconf->ipv6_lookup_struct);
+
+               if (dst_port >= RTE_MAX_ETHPORTS ||
+                       (enabled_port_mask & 1 << dst_port) == 0)
+                       dst_port = portid;
+
+               /* dst addr */
+               *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[dst_port];
+
+               /* src addr */
+               ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
+
+               send_single_packet(qconf, m, dst_port);
+       } else {
+               /* Free the mbuf that contains non-IPV4/IPV6 packet */
+               rte_pktmbuf_free(m);
+       }
+}
+
 /*
  * Buffer non-optimized handling of packets, invoked
  * from main_loop.