crypto/mlx5: add maximum segments configuration
[dpdk.git] / examples / l3fwd / l3fwd_em_sequential.h
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2010-2016 Intel Corporation
3  */
4
5 #ifndef __L3FWD_EM_SEQUENTIAL_H__
6 #define __L3FWD_EM_SEQUENTIAL_H__
7
8 /**
9  * @file
10  * This is an optional implementation of packet classification in Exact-Match
11  * path using sequential packet classification method.
12  * While hash lookup multi seems to provide better performance, it's disabled
13  * by default and can be enabled with NO_HASH_LOOKUP_MULTI global define in
14  * compilation time.
15  */
16
17 #if defined RTE_ARCH_X86
18 #include "l3fwd_sse.h"
19 #elif defined __ARM_NEON
20 #include "l3fwd_neon.h"
21 #endif
22
23 static __rte_always_inline uint16_t
24 em_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
25                 uint16_t portid)
26 {
27         uint8_t next_hop;
28         struct rte_ipv4_hdr *ipv4_hdr;
29         struct rte_ipv6_hdr *ipv6_hdr;
30         uint32_t tcp_or_udp;
31         uint32_t l3_ptypes;
32
33         tcp_or_udp = pkt->packet_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
34         l3_ptypes = pkt->packet_type & RTE_PTYPE_L3_MASK;
35
36         if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV4)) {
37
38                 /* Handle IPv4 headers.*/
39                 ipv4_hdr = rte_pktmbuf_mtod_offset(pkt, struct rte_ipv4_hdr *,
40                                 sizeof(struct rte_ether_hdr));
41
42                 next_hop = em_get_ipv4_dst_port(ipv4_hdr, portid,
43                                 qconf->ipv4_lookup_struct);
44
45                 if (next_hop >= RTE_MAX_ETHPORTS ||
46                                 (enabled_port_mask & 1 << next_hop) == 0)
47                         next_hop = portid;
48
49                 return next_hop;
50
51         } else if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV6)) {
52
53                 /* Handle IPv6 headers.*/
54                 ipv6_hdr = rte_pktmbuf_mtod_offset(pkt, struct rte_ipv6_hdr *,
55                                 sizeof(struct rte_ether_hdr));
56
57                 next_hop = em_get_ipv6_dst_port(ipv6_hdr, portid,
58                                 qconf->ipv6_lookup_struct);
59
60                 if (next_hop >= RTE_MAX_ETHPORTS ||
61                                 (enabled_port_mask & 1 << next_hop) == 0)
62                         next_hop = portid;
63
64                 return next_hop;
65
66         }
67
68         return portid;
69 }
70
71 /*
72  * Buffer optimized handling of packets, invoked
73  * from main_loop.
74  */
75 static inline void
76 l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
77                         uint16_t portid, struct lcore_conf *qconf)
78 {
79         int32_t i, j;
80         uint16_t dst_port[MAX_PKT_BURST];
81
82         if (nb_rx > 0) {
83                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[0],
84                                                struct rte_ether_hdr *) + 1);
85         }
86
87         for (i = 1, j = 0; j < nb_rx; i++, j++) {
88                 if (i < nb_rx) {
89                         rte_prefetch0(rte_pktmbuf_mtod(
90                                         pkts_burst[i],
91                                         struct rte_ether_hdr *) + 1);
92                 }
93                 dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
94         }
95
96         send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
97 }
98
99 /*
100  * Buffer optimized handling of events, invoked
101  * from main_loop.
102  */
103 static inline void
104 l3fwd_em_process_events(int nb_rx, struct rte_event **events,
105                      struct lcore_conf *qconf)
106 {
107         int32_t i, j;
108
109         rte_prefetch0(rte_pktmbuf_mtod(events[0]->mbuf,
110                       struct rte_ether_hdr *) + 1);
111
112         for (i = 1, j = 0; j < nb_rx; i++, j++) {
113                 struct rte_mbuf *mbuf = events[j]->mbuf;
114
115                 if (i < nb_rx) {
116                         rte_prefetch0(rte_pktmbuf_mtod(
117                                         events[i]->mbuf,
118                                         struct rte_ether_hdr *) + 1);
119                 }
120                 mbuf->port = em_get_dst_port(qconf, mbuf, mbuf->port);
121                 process_packet(mbuf, &mbuf->port);
122         }
123 }
124 #endif /* __L3FWD_EM_SEQUENTIAL_H__ */