+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __L3FWD_EM_SEQUENTIAL_H__
+#define __L3FWD_EM_SEQUENTIAL_H__
+
+/**
+ * @file
+ * This is an optional implementation of packet classification in Exact-Match
+ * path using sequential packet classification method.
+ * While hash lookup multi seems to provide better performance, it's disabled
+ * by default and can be enabled with NO_HASH_LOOKUP_MULTI global define in
+ * compilation time.
+ */
+
+#include "l3fwd_sse.h"
+
+static __rte_always_inline uint16_t
+em_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
+ uint8_t portid)
+{
+ uint8_t next_hop;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
+ uint32_t tcp_or_udp;
+ uint32_t l3_ptypes;
+
+ tcp_or_udp = pkt->packet_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
+ l3_ptypes = pkt->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(pkt, struct ipv4_hdr *,
+ sizeof(struct ether_hdr));
+
+ next_hop = em_get_ipv4_dst_port(ipv4_hdr, portid,
+ qconf->ipv4_lookup_struct);
+
+ if (next_hop >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << next_hop) == 0)
+ next_hop = portid;
+
+ return next_hop;
+
+ } else if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV6)) {
+
+ /* Handle IPv6 headers.*/
+ ipv6_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv6_hdr *,
+ sizeof(struct ether_hdr));
+
+ next_hop = em_get_ipv6_dst_port(ipv6_hdr, portid,
+ qconf->ipv6_lookup_struct);
+
+ if (next_hop >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << next_hop) == 0)
+ next_hop = portid;
+
+ return next_hop;
+
+ }
+
+ return portid;
+}
+
+/*
+ * Buffer optimized handling of packets, invoked
+ * from main_loop.
+ */
+static inline void
+l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
+ uint8_t portid, struct lcore_conf *qconf)
+{
+ int32_t j;
+ uint16_t dst_port[MAX_PKT_BURST];
+
+ for (j = 0; j < nb_rx; j++)
+ dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
+
+ send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
+}
+#endif /* __L3FWD_EM_SEQUENTIAL_H__ */
git.droids-corp.org / dpdk.git / commitdiff