1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
11 #include <sys/queue.h>
17 #include <rte_debug.h>
18 #include <rte_ether.h>
19 #include <rte_ethdev.h>
20 #include <rte_cycles.h>
30 struct ipv4_l3fwd_lpm_route {
36 struct ipv6_l3fwd_lpm_route {
42 static struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = {
43 {IPv4(1, 1, 1, 0), 24, 0},
44 {IPv4(2, 1, 1, 0), 24, 1},
45 {IPv4(3, 1, 1, 0), 24, 2},
46 {IPv4(4, 1, 1, 0), 24, 3},
47 {IPv4(5, 1, 1, 0), 24, 4},
48 {IPv4(6, 1, 1, 0), 24, 5},
49 {IPv4(7, 1, 1, 0), 24, 6},
50 {IPv4(8, 1, 1, 0), 24, 7},
53 static struct ipv6_l3fwd_lpm_route ipv6_l3fwd_lpm_route_array[] = {
54 {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 0},
55 {{2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 1},
56 {{3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 2},
57 {{4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 3},
58 {{5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 4},
59 {{6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 5},
60 {{7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 6},
61 {{8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 7},
64 #define IPV4_L3FWD_LPM_NUM_ROUTES \
65 (sizeof(ipv4_l3fwd_lpm_route_array) / sizeof(ipv4_l3fwd_lpm_route_array[0]))
66 #define IPV6_L3FWD_LPM_NUM_ROUTES \
67 (sizeof(ipv6_l3fwd_lpm_route_array) / sizeof(ipv6_l3fwd_lpm_route_array[0]))
69 #define IPV4_L3FWD_LPM_MAX_RULES 1024
70 #define IPV4_L3FWD_LPM_NUMBER_TBL8S (1 << 8)
71 #define IPV6_L3FWD_LPM_MAX_RULES 1024
72 #define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
74 struct rte_lpm *ipv4_l3fwd_lpm_lookup_struct[NB_SOCKETS];
75 struct rte_lpm6 *ipv6_l3fwd_lpm_lookup_struct[NB_SOCKETS];
77 static inline uint16_t
78 lpm_get_ipv4_dst_port(void *ipv4_hdr, uint16_t portid, void *lookup_struct)
81 struct rte_lpm *ipv4_l3fwd_lookup_struct =
82 (struct rte_lpm *)lookup_struct;
84 return (uint16_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
85 rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
86 &next_hop) == 0) ? next_hop : portid);
89 static inline uint16_t
90 lpm_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct)
93 struct rte_lpm6 *ipv6_l3fwd_lookup_struct =
94 (struct rte_lpm6 *)lookup_struct;
96 return (uint16_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
97 ((struct ipv6_hdr *)ipv6_hdr)->dst_addr,
98 &next_hop) == 0) ? next_hop : portid);
101 static __rte_always_inline uint16_t
102 lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
105 struct ipv6_hdr *ipv6_hdr;
106 struct ipv4_hdr *ipv4_hdr;
107 struct ether_hdr *eth_hdr;
109 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
111 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
112 ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
114 return lpm_get_ipv4_dst_port(ipv4_hdr, portid,
115 qconf->ipv4_lookup_struct);
116 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
118 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
119 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
121 return lpm_get_ipv6_dst_port(ipv6_hdr, portid,
122 qconf->ipv6_lookup_struct);
129 * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
130 * precalculated. If packet is ipv6 dst_addr is taken directly from packet
131 * header and dst_ipv4 value is not used.
133 static __rte_always_inline uint16_t
134 lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
135 uint32_t dst_ipv4, uint16_t portid)
138 struct ipv6_hdr *ipv6_hdr;
139 struct ether_hdr *eth_hdr;
141 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
142 return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
143 dst_ipv4, &next_hop) == 0)
144 ? next_hop : portid);
146 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
148 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
149 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
151 return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
152 ipv6_hdr->dst_addr, &next_hop) == 0)
153 ? next_hop : portid);
160 #if defined(RTE_ARCH_X86)
161 #include "l3fwd_lpm_sse.h"
162 #elif defined RTE_MACHINE_CPUFLAG_NEON
163 #include "l3fwd_lpm_neon.h"
164 #elif defined(RTE_ARCH_PPC_64)
165 #include "l3fwd_lpm_altivec.h"
167 #include "l3fwd_lpm.h"
170 /* main processing loop */
172 lpm_main_loop(__attribute__((unused)) void *dummy)
174 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
176 uint64_t prev_tsc, diff_tsc, cur_tsc;
180 struct lcore_conf *qconf;
181 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
182 US_PER_S * BURST_TX_DRAIN_US;
186 lcore_id = rte_lcore_id();
187 qconf = &lcore_conf[lcore_id];
189 if (qconf->n_rx_queue == 0) {
190 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
194 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
196 for (i = 0; i < qconf->n_rx_queue; i++) {
198 portid = qconf->rx_queue_list[i].port_id;
199 queueid = qconf->rx_queue_list[i].queue_id;
201 " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
202 lcore_id, portid, queueid);
205 while (!force_quit) {
207 cur_tsc = rte_rdtsc();
210 * TX burst queue drain
212 diff_tsc = cur_tsc - prev_tsc;
213 if (unlikely(diff_tsc > drain_tsc)) {
215 for (i = 0; i < qconf->n_tx_port; ++i) {
216 portid = qconf->tx_port_id[i];
217 if (qconf->tx_mbufs[portid].len == 0)
220 qconf->tx_mbufs[portid].len,
222 qconf->tx_mbufs[portid].len = 0;
229 * Read packet from RX queues
231 for (i = 0; i < qconf->n_rx_queue; ++i) {
232 portid = qconf->rx_queue_list[i].port_id;
233 queueid = qconf->rx_queue_list[i].queue_id;
234 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
239 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON \
240 || defined RTE_ARCH_PPC_64
241 l3fwd_lpm_send_packets(nb_rx, pkts_burst,
244 l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
254 setup_lpm(const int socketid)
256 struct rte_lpm6_config config;
257 struct rte_lpm_config config_ipv4;
262 /* create the LPM table */
263 config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
264 config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
265 config_ipv4.flags = 0;
266 snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
267 ipv4_l3fwd_lpm_lookup_struct[socketid] =
268 rte_lpm_create(s, socketid, &config_ipv4);
269 if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
270 rte_exit(EXIT_FAILURE,
271 "Unable to create the l3fwd LPM table on socket %d\n",
274 /* populate the LPM table */
275 for (i = 0; i < IPV4_L3FWD_LPM_NUM_ROUTES; i++) {
277 /* skip unused ports */
278 if ((1 << ipv4_l3fwd_lpm_route_array[i].if_out &
279 enabled_port_mask) == 0)
282 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
283 ipv4_l3fwd_lpm_route_array[i].ip,
284 ipv4_l3fwd_lpm_route_array[i].depth,
285 ipv4_l3fwd_lpm_route_array[i].if_out);
288 rte_exit(EXIT_FAILURE,
289 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
293 printf("LPM: Adding route 0x%08x / %d (%d)\n",
294 (unsigned)ipv4_l3fwd_lpm_route_array[i].ip,
295 ipv4_l3fwd_lpm_route_array[i].depth,
296 ipv4_l3fwd_lpm_route_array[i].if_out);
299 /* create the LPM6 table */
300 snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
302 config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
303 config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
305 ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
307 if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
308 rte_exit(EXIT_FAILURE,
309 "Unable to create the l3fwd LPM table on socket %d\n",
312 /* populate the LPM table */
313 for (i = 0; i < IPV6_L3FWD_LPM_NUM_ROUTES; i++) {
315 /* skip unused ports */
316 if ((1 << ipv6_l3fwd_lpm_route_array[i].if_out &
317 enabled_port_mask) == 0)
320 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
321 ipv6_l3fwd_lpm_route_array[i].ip,
322 ipv6_l3fwd_lpm_route_array[i].depth,
323 ipv6_l3fwd_lpm_route_array[i].if_out);
326 rte_exit(EXIT_FAILURE,
327 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
331 printf("LPM: Adding route %s / %d (%d)\n",
333 ipv6_l3fwd_lpm_route_array[i].depth,
334 ipv6_l3fwd_lpm_route_array[i].if_out);
339 lpm_check_ptype(int portid)
342 int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
343 uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
345 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
349 uint32_t ptypes[ret];
351 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
352 for (i = 0; i < ret; ++i) {
353 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
355 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
359 if (ptype_l3_ipv4 == 0)
360 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
362 if (ptype_l3_ipv6 == 0)
363 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
365 if (ptype_l3_ipv4 && ptype_l3_ipv6)
373 lpm_parse_ptype(struct rte_mbuf *m)
375 struct ether_hdr *eth_hdr;
376 uint32_t packet_type = RTE_PTYPE_UNKNOWN;
379 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
380 ether_type = eth_hdr->ether_type;
381 if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
382 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
383 else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
384 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
386 m->packet_type = packet_type;
390 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
391 struct rte_mbuf *pkts[], uint16_t nb_pkts,
392 uint16_t max_pkts __rte_unused,
393 void *user_param __rte_unused)
397 for (i = 0; i < nb_pkts; ++i)
398 lpm_parse_ptype(pkts[i]);
403 /* Return ipv4/ipv6 lpm fwd lookup struct. */
405 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
407 return ipv4_l3fwd_lpm_lookup_struct[socketid];
411 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
413 return ipv6_l3fwd_lpm_lookup_struct[socketid];