1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2021 Intel Corporation
8 #include <sys/socket.h>
15 #if defined RTE_ARCH_X86
16 #include "l3fwd_sse.h"
17 #elif defined __ARM_NEON
18 #include "l3fwd_neon.h"
19 #elif defined RTE_ARCH_PPC_64
20 #include "l3fwd_altivec.h"
22 #include "l3fwd_event.h"
23 #include "l3fwd_route.h"
25 /* Configure how many packets ahead to prefetch for fib. */
26 #define FIB_PREFETCH_OFFSET 4
28 /* A non-existent portid is needed to denote a default hop for fib. */
29 #define FIB_DEFAULT_HOP 999
32 * If the machine has SSE, NEON or PPC 64 then multiple packets
33 * can be sent at once if not only single packets will be sent
35 #if defined RTE_ARCH_X86 || defined __ARM_NEON \
36 || defined RTE_ARCH_PPC_64
37 #define FIB_SEND_MULTI
40 static struct rte_fib *ipv4_l3fwd_fib_lookup_struct[NB_SOCKETS];
41 static struct rte_fib6 *ipv6_l3fwd_fib_lookup_struct[NB_SOCKETS];
43 /* Parse packet type and ip address. */
45 fib_parse_packet(struct rte_mbuf *mbuf,
46 uint32_t *ipv4, uint32_t *ipv4_cnt,
47 uint8_t ipv6[RTE_FIB6_IPV6_ADDR_SIZE],
48 uint32_t *ipv6_cnt, uint8_t *ip_type)
50 struct rte_ether_hdr *eth_hdr;
51 struct rte_ipv4_hdr *ipv4_hdr;
52 struct rte_ipv6_hdr *ipv6_hdr;
54 eth_hdr = rte_pktmbuf_mtod(mbuf, struct rte_ether_hdr *);
56 if (mbuf->packet_type & RTE_PTYPE_L3_IPV4) {
57 ipv4_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
58 *ipv4 = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
59 /* Store type of packet in type_arr (IPv4=1, IPv6=0). */
65 ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1);
66 rte_mov16(ipv6, (const uint8_t *)ipv6_hdr->dst_addr);
73 * If the machine does not have SSE, NEON or PPC 64 then the packets
74 * are sent one at a time using send_single_packet()
76 #if !defined FIB_SEND_MULTI
78 fib_send_single(int nb_tx, struct lcore_conf *qconf,
79 struct rte_mbuf **pkts_burst, uint16_t hops[nb_tx])
82 struct rte_ether_hdr *eth_hdr;
84 for (j = 0; j < nb_tx; j++) {
85 /* Run rfc1812 if packet is ipv4 and checks enabled. */
86 #if defined DO_RFC_1812_CHECKS
87 rfc1812_process((struct rte_ipv4_hdr *)(rte_pktmbuf_mtod(
88 pkts_burst[j], struct rte_ether_hdr *) + 1),
89 &hops[j], pkts_burst[j]->packet_type);
92 /* Set MAC addresses. */
93 eth_hdr = rte_pktmbuf_mtod(pkts_burst[j],
94 struct rte_ether_hdr *);
95 *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[hops[j]];
96 rte_ether_addr_copy(&ports_eth_addr[hops[j]],
99 /* Send single packet. */
100 send_single_packet(qconf, pkts_burst[j], hops[j]);
105 /* Bulk parse, fib lookup and send. */
107 fib_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
108 uint16_t portid, struct lcore_conf *qconf)
110 uint32_t ipv4_arr[nb_rx];
111 uint8_t ipv6_arr[nb_rx][RTE_FIB6_IPV6_ADDR_SIZE];
112 uint16_t hops[nb_rx];
113 uint64_t hopsv4[nb_rx], hopsv6[nb_rx];
114 uint8_t type_arr[nb_rx];
115 uint32_t ipv4_cnt = 0, ipv6_cnt = 0;
116 uint32_t ipv4_arr_assem = 0, ipv6_arr_assem = 0;
120 /* Prefetch first packets. */
121 for (i = 0; i < FIB_PREFETCH_OFFSET && i < nb_rx; i++)
122 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i], void *));
124 /* Parse packet info and prefetch. */
125 for (i = 0; i < (nb_rx - FIB_PREFETCH_OFFSET); i++) {
126 /* Prefetch packet. */
127 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
128 i + FIB_PREFETCH_OFFSET], void *));
129 fib_parse_packet(pkts_burst[i],
130 &ipv4_arr[ipv4_cnt], &ipv4_cnt,
131 ipv6_arr[ipv6_cnt], &ipv6_cnt,
135 /* Parse remaining packet info. */
136 for (; i < nb_rx; i++)
137 fib_parse_packet(pkts_burst[i],
138 &ipv4_arr[ipv4_cnt], &ipv4_cnt,
139 ipv6_arr[ipv6_cnt], &ipv6_cnt,
142 /* Lookup IPv4 hops if IPv4 packets are present. */
143 if (likely(ipv4_cnt > 0))
144 rte_fib_lookup_bulk(qconf->ipv4_lookup_struct,
145 ipv4_arr, hopsv4, ipv4_cnt);
147 /* Lookup IPv6 hops if IPv6 packets are present. */
149 rte_fib6_lookup_bulk(qconf->ipv6_lookup_struct,
150 ipv6_arr, hopsv6, ipv6_cnt);
152 /* Add IPv4 and IPv6 hops to one array depending on type. */
153 for (i = 0; i < nb_rx; i++) {
155 nh = (uint16_t)hopsv4[ipv4_arr_assem++];
157 nh = (uint16_t)hopsv6[ipv6_arr_assem++];
158 hops[i] = nh != FIB_DEFAULT_HOP ? nh : portid;
161 #if defined FIB_SEND_MULTI
162 send_packets_multi(qconf, pkts_burst, hops, nb_rx);
164 fib_send_single(nb_rx, qconf, pkts_burst, hops);
168 /* Main fib processing loop. */
170 fib_main_loop(__rte_unused void *dummy)
172 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
173 unsigned int lcore_id;
174 uint64_t prev_tsc, diff_tsc, cur_tsc;
178 struct lcore_conf *qconf;
179 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
180 US_PER_S * BURST_TX_DRAIN_US;
184 lcore_id = rte_lcore_id();
185 qconf = &lcore_conf[lcore_id];
187 if (qconf->n_rx_queue == 0) {
188 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
192 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
194 for (i = 0; i < qconf->n_rx_queue; i++) {
196 portid = qconf->rx_queue_list[i].port_id;
197 queueid = qconf->rx_queue_list[i].queue_id;
199 " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
200 lcore_id, portid, queueid);
203 while (!force_quit) {
205 cur_tsc = rte_rdtsc();
207 /* TX burst queue drain. */
208 diff_tsc = cur_tsc - prev_tsc;
209 if (unlikely(diff_tsc > drain_tsc)) {
211 for (i = 0; i < qconf->n_tx_port; ++i) {
212 portid = qconf->tx_port_id[i];
213 if (qconf->tx_mbufs[portid].len == 0)
216 qconf->tx_mbufs[portid].len,
218 qconf->tx_mbufs[portid].len = 0;
224 /* Read packet from RX queues. */
225 for (i = 0; i < qconf->n_rx_queue; ++i) {
226 portid = qconf->rx_queue_list[i].port_id;
227 queueid = qconf->rx_queue_list[i].queue_id;
228 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
233 /* Use fib to lookup port IDs and transmit them. */
234 fib_send_packets(nb_rx, pkts_burst, portid, qconf);
241 /* One eventdev loop for single and burst using fib. */
242 static __rte_always_inline void
243 fib_event_loop(struct l3fwd_event_resources *evt_rsrc,
246 const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
247 const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
248 evt_rsrc->evq.nb_queues - 1];
249 const uint8_t event_d_id = evt_rsrc->event_d_id;
250 const uint16_t deq_len = evt_rsrc->deq_depth;
251 struct rte_event events[MAX_PKT_BURST];
252 struct lcore_conf *lconf;
253 unsigned int lcore_id;
254 int nb_enq, nb_deq, i;
256 uint32_t ipv4_arr[MAX_PKT_BURST];
257 uint8_t ipv6_arr[MAX_PKT_BURST][RTE_FIB6_IPV6_ADDR_SIZE];
258 uint64_t hopsv4[MAX_PKT_BURST], hopsv6[MAX_PKT_BURST];
260 uint8_t type_arr[MAX_PKT_BURST];
261 uint32_t ipv4_cnt, ipv6_cnt;
262 uint32_t ipv4_arr_assem, ipv6_arr_assem;
267 lcore_id = rte_lcore_id();
269 lconf = &lcore_conf[lcore_id];
271 RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
273 while (!force_quit) {
274 /* Read events from RX queues. */
275 nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id,
282 /* Reset counters. */
288 /* Prefetch first packets. */
289 for (i = 0; i < FIB_PREFETCH_OFFSET && i < nb_deq; i++)
290 rte_prefetch0(rte_pktmbuf_mtod(events[i].mbuf, void *));
292 /* Parse packet info and prefetch. */
293 for (i = 0; i < (nb_deq - FIB_PREFETCH_OFFSET); i++) {
294 if (flags & L3FWD_EVENT_TX_ENQ) {
295 events[i].queue_id = tx_q_id;
296 events[i].op = RTE_EVENT_OP_FORWARD;
299 if (flags & L3FWD_EVENT_TX_DIRECT)
300 rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
303 /* Prefetch packet. */
304 rte_prefetch0(rte_pktmbuf_mtod(events[
305 i + FIB_PREFETCH_OFFSET].mbuf,
308 fib_parse_packet(events[i].mbuf,
309 &ipv4_arr[ipv4_cnt], &ipv4_cnt,
310 ipv6_arr[ipv6_cnt], &ipv6_cnt,
314 /* Parse remaining packet info. */
315 for (; i < nb_deq; i++) {
316 if (flags & L3FWD_EVENT_TX_ENQ) {
317 events[i].queue_id = tx_q_id;
318 events[i].op = RTE_EVENT_OP_FORWARD;
321 if (flags & L3FWD_EVENT_TX_DIRECT)
322 rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
325 fib_parse_packet(events[i].mbuf,
326 &ipv4_arr[ipv4_cnt], &ipv4_cnt,
327 ipv6_arr[ipv6_cnt], &ipv6_cnt,
331 /* Lookup IPv4 hops if IPv4 packets are present. */
332 if (likely(ipv4_cnt > 0))
333 rte_fib_lookup_bulk(lconf->ipv4_lookup_struct,
334 ipv4_arr, hopsv4, ipv4_cnt);
336 /* Lookup IPv6 hops if IPv6 packets are present. */
338 rte_fib6_lookup_bulk(lconf->ipv6_lookup_struct,
339 ipv6_arr, hopsv6, ipv6_cnt);
341 /* Assign ports looked up in fib depending on IPv4 or IPv6 */
342 for (i = 0; i < nb_deq; i++) {
344 nh = (uint16_t)hopsv4[ipv4_arr_assem++];
346 nh = (uint16_t)hopsv6[ipv6_arr_assem++];
347 if (nh != FIB_DEFAULT_HOP)
348 events[i].mbuf->port = nh;
351 if (flags & L3FWD_EVENT_TX_ENQ) {
352 nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id,
354 while (nb_enq < nb_deq && !force_quit)
355 nb_enq += rte_event_enqueue_burst(event_d_id,
356 event_p_id, events + nb_enq,
360 if (flags & L3FWD_EVENT_TX_DIRECT) {
361 nb_enq = rte_event_eth_tx_adapter_enqueue(event_d_id,
362 event_p_id, events, nb_deq, 0);
363 while (nb_enq < nb_deq && !force_quit)
364 nb_enq += rte_event_eth_tx_adapter_enqueue(
365 event_d_id, event_p_id,
373 fib_event_main_loop_tx_d(__rte_unused void *dummy)
375 struct l3fwd_event_resources *evt_rsrc =
376 l3fwd_get_eventdev_rsrc();
378 fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT);
383 fib_event_main_loop_tx_d_burst(__rte_unused void *dummy)
385 struct l3fwd_event_resources *evt_rsrc =
386 l3fwd_get_eventdev_rsrc();
388 fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT);
393 fib_event_main_loop_tx_q(__rte_unused void *dummy)
395 struct l3fwd_event_resources *evt_rsrc =
396 l3fwd_get_eventdev_rsrc();
398 fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ);
403 fib_event_main_loop_tx_q_burst(__rte_unused void *dummy)
405 struct l3fwd_event_resources *evt_rsrc =
406 l3fwd_get_eventdev_rsrc();
408 fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ);
412 /* Function to setup fib. */
414 setup_fib(const int socketid)
416 struct rte_fib6_conf config;
417 struct rte_fib_conf config_ipv4;
421 char abuf[INET6_ADDRSTRLEN];
423 /* Create the fib IPv4 table. */
424 config_ipv4.type = RTE_FIB_DIR24_8;
425 config_ipv4.max_routes = (1 << 16);
426 config_ipv4.default_nh = FIB_DEFAULT_HOP;
427 config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
428 config_ipv4.dir24_8.num_tbl8 = (1 << 15);
429 snprintf(s, sizeof(s), "IPV4_L3FWD_FIB_%d", socketid);
430 ipv4_l3fwd_fib_lookup_struct[socketid] =
431 rte_fib_create(s, socketid, &config_ipv4);
432 if (ipv4_l3fwd_fib_lookup_struct[socketid] == NULL)
433 rte_exit(EXIT_FAILURE,
434 "Unable to create the l3fwd FIB table on socket %d\n",
437 /* Populate the fib ipv4 table. */
438 for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
441 /* Skip unused ports. */
442 if ((1 << ipv4_l3fwd_route_array[i].if_out &
443 enabled_port_mask) == 0)
446 ret = rte_fib_add(ipv4_l3fwd_fib_lookup_struct[socketid],
447 ipv4_l3fwd_route_array[i].ip,
448 ipv4_l3fwd_route_array[i].depth,
449 ipv4_l3fwd_route_array[i].if_out);
452 rte_exit(EXIT_FAILURE,
453 "Unable to add entry %u to the l3fwd FIB table on socket %d\n",
457 in.s_addr = htonl(ipv4_l3fwd_route_array[i].ip);
458 if (inet_ntop(AF_INET, &in, abuf, sizeof(abuf)) != NULL) {
459 printf("FIB: Adding route %s / %d (%d)\n",
461 ipv4_l3fwd_route_array[i].depth,
462 ipv4_l3fwd_route_array[i].if_out);
464 printf("FIB: IPv4 route added to port %d\n",
465 ipv4_l3fwd_route_array[i].if_out);
469 /* Create the fib IPv6 table. */
470 snprintf(s, sizeof(s), "IPV6_L3FWD_FIB_%d", socketid);
472 config.type = RTE_FIB6_TRIE;
473 config.max_routes = (1 << 16) - 1;
474 config.default_nh = FIB_DEFAULT_HOP;
475 config.trie.nh_sz = RTE_FIB6_TRIE_4B;
476 config.trie.num_tbl8 = (1 << 15);
477 ipv6_l3fwd_fib_lookup_struct[socketid] = rte_fib6_create(s, socketid,
479 if (ipv6_l3fwd_fib_lookup_struct[socketid] == NULL)
480 rte_exit(EXIT_FAILURE,
481 "Unable to create the l3fwd FIB table on socket %d\n",
484 /* Populate the fib IPv6 table. */
485 for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
487 /* Skip unused ports. */
488 if ((1 << ipv6_l3fwd_route_array[i].if_out &
489 enabled_port_mask) == 0)
492 ret = rte_fib6_add(ipv6_l3fwd_fib_lookup_struct[socketid],
493 ipv6_l3fwd_route_array[i].ip,
494 ipv6_l3fwd_route_array[i].depth,
495 ipv6_l3fwd_route_array[i].if_out);
498 rte_exit(EXIT_FAILURE,
499 "Unable to add entry %u to the l3fwd FIB table on socket %d\n",
503 if (inet_ntop(AF_INET6, ipv6_l3fwd_route_array[i].ip,
504 abuf, sizeof(abuf)) != NULL) {
505 printf("FIB: Adding route %s / %d (%d)\n",
507 ipv6_l3fwd_route_array[i].depth,
508 ipv6_l3fwd_route_array[i].if_out);
510 printf("FIB: IPv6 route added to port %d\n",
511 ipv6_l3fwd_route_array[i].if_out);
516 /* Return ipv4 fib lookup struct. */
518 fib_get_ipv4_l3fwd_lookup_struct(const int socketid)
520 return ipv4_l3fwd_fib_lookup_struct[socketid];
523 /* Return ipv6 fib lookup struct. */
525 fib_get_ipv6_l3fwd_lookup_struct(const int socketid)
527 return ipv6_l3fwd_fib_lookup_struct[socketid];