power: fix frequency list buffer validation
[dpdk.git] / examples / l3fwd / l3fwd_lpm.h
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2010-2016 Intel Corporation
3  */
4
5 #ifndef __L3FWD_LPM_H__
6 #define __L3FWD_LPM_H__
7
8 static __rte_always_inline void
9 l3fwd_lpm_simple_forward(struct rte_mbuf *m, uint16_t portid,
10                 struct lcore_conf *qconf)
11 {
12         struct ether_hdr *eth_hdr;
13         struct ipv4_hdr *ipv4_hdr;
14         uint16_t dst_port;
15
16         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
17
18         if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
19                 /* Handle IPv4 headers.*/
20                 ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
21                                                    sizeof(struct ether_hdr));
22
23 #ifdef DO_RFC_1812_CHECKS
24                 /* Check to make sure the packet is valid (RFC1812) */
25                 if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
26                         rte_pktmbuf_free(m);
27                         return;
28                 }
29 #endif
30                  dst_port = lpm_get_ipv4_dst_port(ipv4_hdr, portid,
31                                                 qconf->ipv4_lookup_struct);
32
33                 if (dst_port >= RTE_MAX_ETHPORTS ||
34                         (enabled_port_mask & 1 << dst_port) == 0)
35                         dst_port = portid;
36
37 #ifdef DO_RFC_1812_CHECKS
38                 /* Update time to live and header checksum */
39                 --(ipv4_hdr->time_to_live);
40                 ++(ipv4_hdr->hdr_checksum);
41 #endif
42                 /* dst addr */
43                 *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[dst_port];
44
45                 /* src addr */
46                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
47
48                 send_single_packet(qconf, m, dst_port);
49         } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
50                 /* Handle IPv6 headers.*/
51                 struct ipv6_hdr *ipv6_hdr;
52
53                 ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
54                                                    sizeof(struct ether_hdr));
55
56                 dst_port = lpm_get_ipv6_dst_port(ipv6_hdr, portid,
57                                         qconf->ipv6_lookup_struct);
58
59                 if (dst_port >= RTE_MAX_ETHPORTS ||
60                         (enabled_port_mask & 1 << dst_port) == 0)
61                         dst_port = portid;
62
63                 /* dst addr */
64                 *(uint64_t *)&eth_hdr->d_addr = dest_eth_addr[dst_port];
65
66                 /* src addr */
67                 ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);
68
69                 send_single_packet(qconf, m, dst_port);
70         } else {
71                 /* Free the mbuf that contains non-IPV4/IPV6 packet */
72                 rte_pktmbuf_free(m);
73         }
74 }
75
76 static inline void
77 l3fwd_lpm_no_opt_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
78                                 uint16_t portid, struct lcore_conf *qconf)
79 {
80         int32_t j;
81
82         /* Prefetch first packets */
83         for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++)
84                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[j], void *));
85
86         /* Prefetch and forward already prefetched packets. */
87         for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
88                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
89                                 j + PREFETCH_OFFSET], void *));
90                 l3fwd_lpm_simple_forward(pkts_burst[j], portid, qconf);
91         }
92
93         /* Forward remaining prefetched packets */
94         for (; j < nb_rx; j++)
95                 l3fwd_lpm_simple_forward(pkts_burst[j], portid, qconf);
96 }
97
98 #endif /* __L3FWD_LPM_H__ */