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38 #include <sys/types.h>
40 #include <sys/queue.h>
46 #include <rte_debug.h>
47 #include <rte_ether.h>
48 #include <rte_ethdev.h>
50 #include <rte_mempool.h>
51 #include <rte_cycles.h>
60 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
61 #include <rte_hash_crc.h>
62 #define DEFAULT_HASH_FUNC rte_hash_crc
64 #include <rte_jhash.h>
65 #define DEFAULT_HASH_FUNC rte_jhash
66 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
68 #define IPV6_ADDR_LEN 16
76 } __attribute__((__packed__));
78 union ipv4_5tuple_host {
91 #define XMM_NUM_IN_IPV6_5TUPLE 3
94 uint8_t ip_dst[IPV6_ADDR_LEN];
95 uint8_t ip_src[IPV6_ADDR_LEN];
99 } __attribute__((__packed__));
101 union ipv6_5tuple_host {
106 uint8_t ip_src[IPV6_ADDR_LEN];
107 uint8_t ip_dst[IPV6_ADDR_LEN];
112 xmm_t xmm[XMM_NUM_IN_IPV6_5TUPLE];
117 struct ipv4_l3fwd_em_route {
118 struct ipv4_5tuple key;
122 struct ipv6_l3fwd_em_route {
123 struct ipv6_5tuple key;
127 static struct ipv4_l3fwd_em_route ipv4_l3fwd_em_route_array[] = {
128 {{IPv4(101, 0, 0, 0), IPv4(100, 10, 0, 1), 101, 11, IPPROTO_TCP}, 0},
129 {{IPv4(201, 0, 0, 0), IPv4(200, 20, 0, 1), 102, 12, IPPROTO_TCP}, 1},
130 {{IPv4(111, 0, 0, 0), IPv4(100, 30, 0, 1), 101, 11, IPPROTO_TCP}, 2},
131 {{IPv4(211, 0, 0, 0), IPv4(200, 40, 0, 1), 102, 12, IPPROTO_TCP}, 3},
134 static struct ipv6_l3fwd_em_route ipv6_l3fwd_em_route_array[] = {
136 {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
137 {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
138 101, 11, IPPROTO_TCP}, 0},
141 {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
142 {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
143 102, 12, IPPROTO_TCP}, 1},
146 {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
147 {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
148 101, 11, IPPROTO_TCP}, 2},
151 {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
152 {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
153 102, 12, IPPROTO_TCP}, 3},
156 struct rte_hash *ipv4_l3fwd_em_lookup_struct[NB_SOCKETS];
157 struct rte_hash *ipv6_l3fwd_em_lookup_struct[NB_SOCKETS];
159 static inline uint32_t
160 ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
163 const union ipv4_5tuple_host *k;
169 p = (const uint32_t *)&k->port_src;
171 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
172 init_val = rte_hash_crc_4byte(t, init_val);
173 init_val = rte_hash_crc_4byte(k->ip_src, init_val);
174 init_val = rte_hash_crc_4byte(k->ip_dst, init_val);
175 init_val = rte_hash_crc_4byte(*p, init_val);
176 #else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
177 init_val = rte_jhash_1word(t, init_val);
178 init_val = rte_jhash_1word(k->ip_src, init_val);
179 init_val = rte_jhash_1word(k->ip_dst, init_val);
180 init_val = rte_jhash_1word(*p, init_val);
181 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
186 static inline uint32_t
187 ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len,
190 const union ipv6_5tuple_host *k;
193 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
194 const uint32_t *ip_src0, *ip_src1, *ip_src2, *ip_src3;
195 const uint32_t *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3;
196 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
200 p = (const uint32_t *)&k->port_src;
202 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
203 ip_src0 = (const uint32_t *) k->ip_src;
204 ip_src1 = (const uint32_t *)(k->ip_src+4);
205 ip_src2 = (const uint32_t *)(k->ip_src+8);
206 ip_src3 = (const uint32_t *)(k->ip_src+12);
207 ip_dst0 = (const uint32_t *) k->ip_dst;
208 ip_dst1 = (const uint32_t *)(k->ip_dst+4);
209 ip_dst2 = (const uint32_t *)(k->ip_dst+8);
210 ip_dst3 = (const uint32_t *)(k->ip_dst+12);
211 init_val = rte_hash_crc_4byte(t, init_val);
212 init_val = rte_hash_crc_4byte(*ip_src0, init_val);
213 init_val = rte_hash_crc_4byte(*ip_src1, init_val);
214 init_val = rte_hash_crc_4byte(*ip_src2, init_val);
215 init_val = rte_hash_crc_4byte(*ip_src3, init_val);
216 init_val = rte_hash_crc_4byte(*ip_dst0, init_val);
217 init_val = rte_hash_crc_4byte(*ip_dst1, init_val);
218 init_val = rte_hash_crc_4byte(*ip_dst2, init_val);
219 init_val = rte_hash_crc_4byte(*ip_dst3, init_val);
220 init_val = rte_hash_crc_4byte(*p, init_val);
221 #else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
222 init_val = rte_jhash_1word(t, init_val);
223 init_val = rte_jhash(k->ip_src,
224 sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
225 init_val = rte_jhash(k->ip_dst,
226 sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
227 init_val = rte_jhash_1word(*p, init_val);
228 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
232 #define IPV4_L3FWD_EM_NUM_ROUTES \
233 (sizeof(ipv4_l3fwd_em_route_array) / sizeof(ipv4_l3fwd_em_route_array[0]))
235 #define IPV6_L3FWD_EM_NUM_ROUTES \
236 (sizeof(ipv6_l3fwd_em_route_array) / sizeof(ipv6_l3fwd_em_route_array[0]))
238 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
239 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
241 static rte_xmm_t mask0;
242 static rte_xmm_t mask1;
243 static rte_xmm_t mask2;
245 #if defined(__SSE2__)
247 em_mask_key(void *key, xmm_t mask)
249 __m128i data = _mm_loadu_si128((__m128i *)(key));
251 return _mm_and_si128(data, mask);
253 #elif defined(RTE_MACHINE_CPUFLAG_NEON)
255 em_mask_key(void *key, xmm_t mask)
257 int32x4_t data = vld1q_s32((int32_t *)key);
259 return vandq_s32(data, mask);
263 static inline uint8_t
264 em_get_ipv4_dst_port(void *ipv4_hdr, uint8_t portid, void *lookup_struct)
267 union ipv4_5tuple_host key;
268 struct rte_hash *ipv4_l3fwd_lookup_struct =
269 (struct rte_hash *)lookup_struct;
271 ipv4_hdr = (uint8_t *)ipv4_hdr + offsetof(struct ipv4_hdr, time_to_live);
274 * Get 5 tuple: dst port, src port, dst IP address,
275 * src IP address and protocol.
277 key.xmm = em_mask_key(ipv4_hdr, mask0.x);
279 /* Find destination port */
280 ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
281 return (uint8_t)((ret < 0) ? portid : ipv4_l3fwd_out_if[ret]);
284 static inline uint8_t
285 em_get_ipv6_dst_port(void *ipv6_hdr, uint8_t portid, void *lookup_struct)
288 union ipv6_5tuple_host key;
289 struct rte_hash *ipv6_l3fwd_lookup_struct =
290 (struct rte_hash *)lookup_struct;
292 ipv6_hdr = (uint8_t *)ipv6_hdr + offsetof(struct ipv6_hdr, payload_len);
293 void *data0 = ipv6_hdr;
294 void *data1 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t);
295 void *data2 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t) + sizeof(xmm_t);
297 /* Get part of 5 tuple: src IP address lower 96 bits and protocol */
298 key.xmm[0] = em_mask_key(data0, mask1.x);
301 * Get part of 5 tuple: dst IP address lower 96 bits
302 * and src IP address higher 32 bits.
304 key.xmm[1] = *(xmm_t *)data1;
307 * Get part of 5 tuple: dst port and src port
308 * and dst IP address higher 32 bits.
310 key.xmm[2] = em_mask_key(data2, mask2.x);
312 /* Find destination port */
313 ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
314 return (uint8_t)((ret < 0) ? portid : ipv6_l3fwd_out_if[ret]);
319 * Include header file if SSE4_1 is enabled for
320 * buffer optimization i.e. ENABLE_MULTI_BUFFER_OPTIMIZE=1.
322 #if defined(__SSE4_1__)
323 #if defined(NO_HASH_MULTI_LOOKUP)
324 #include "l3fwd_em_sse.h"
326 #include "l3fwd_em_hlm_sse.h"
329 #include "l3fwd_em.h"
333 convert_ipv4_5tuple(struct ipv4_5tuple *key1,
334 union ipv4_5tuple_host *key2)
336 key2->ip_dst = rte_cpu_to_be_32(key1->ip_dst);
337 key2->ip_src = rte_cpu_to_be_32(key1->ip_src);
338 key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
339 key2->port_src = rte_cpu_to_be_16(key1->port_src);
340 key2->proto = key1->proto;
346 convert_ipv6_5tuple(struct ipv6_5tuple *key1,
347 union ipv6_5tuple_host *key2)
351 for (i = 0; i < 16; i++) {
352 key2->ip_dst[i] = key1->ip_dst[i];
353 key2->ip_src[i] = key1->ip_src[i];
355 key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
356 key2->port_src = rte_cpu_to_be_16(key1->port_src);
357 key2->proto = key1->proto;
363 #define BYTE_VALUE_MAX 256
364 #define ALL_32_BITS 0xffffffff
365 #define BIT_8_TO_15 0x0000ff00
368 populate_ipv4_few_flow_into_table(const struct rte_hash *h)
373 mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
374 ALL_32_BITS, ALL_32_BITS} };
376 for (i = 0; i < IPV4_L3FWD_EM_NUM_ROUTES; i++) {
377 struct ipv4_l3fwd_em_route entry;
378 union ipv4_5tuple_host newkey;
380 entry = ipv4_l3fwd_em_route_array[i];
381 convert_ipv4_5tuple(&entry.key, &newkey);
382 ret = rte_hash_add_key(h, (void *) &newkey);
384 rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
385 " to the l3fwd hash.\n", i);
387 ipv4_l3fwd_out_if[ret] = entry.if_out;
389 printf("Hash: Adding 0x%" PRIx64 " keys\n",
390 (uint64_t)IPV4_L3FWD_EM_NUM_ROUTES);
393 #define BIT_16_TO_23 0x00ff0000
395 populate_ipv6_few_flow_into_table(const struct rte_hash *h)
400 mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
401 ALL_32_BITS, ALL_32_BITS} };
403 mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
405 for (i = 0; i < IPV6_L3FWD_EM_NUM_ROUTES; i++) {
406 struct ipv6_l3fwd_em_route entry;
407 union ipv6_5tuple_host newkey;
409 entry = ipv6_l3fwd_em_route_array[i];
410 convert_ipv6_5tuple(&entry.key, &newkey);
411 ret = rte_hash_add_key(h, (void *) &newkey);
413 rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
414 " to the l3fwd hash.\n", i);
416 ipv6_l3fwd_out_if[ret] = entry.if_out;
418 printf("Hash: Adding 0x%" PRIx64 "keys\n",
419 (uint64_t)IPV6_L3FWD_EM_NUM_ROUTES);
422 #define NUMBER_PORT_USED 4
424 populate_ipv4_many_flow_into_table(const struct rte_hash *h,
425 unsigned int nr_flow)
429 mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
430 ALL_32_BITS, ALL_32_BITS} };
432 for (i = 0; i < nr_flow; i++) {
433 struct ipv4_l3fwd_em_route entry;
434 union ipv4_5tuple_host newkey;
436 uint8_t a = (uint8_t)
437 ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
438 uint8_t b = (uint8_t)
439 (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
440 uint8_t c = (uint8_t)
441 ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
443 /* Create the ipv4 exact match flow */
444 memset(&entry, 0, sizeof(entry));
445 switch (i & (NUMBER_PORT_USED - 1)) {
447 entry = ipv4_l3fwd_em_route_array[0];
448 entry.key.ip_dst = IPv4(101, c, b, a);
451 entry = ipv4_l3fwd_em_route_array[1];
452 entry.key.ip_dst = IPv4(201, c, b, a);
455 entry = ipv4_l3fwd_em_route_array[2];
456 entry.key.ip_dst = IPv4(111, c, b, a);
459 entry = ipv4_l3fwd_em_route_array[3];
460 entry.key.ip_dst = IPv4(211, c, b, a);
463 convert_ipv4_5tuple(&entry.key, &newkey);
464 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
467 rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
469 ipv4_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
472 printf("Hash: Adding 0x%x keys\n", nr_flow);
476 populate_ipv6_many_flow_into_table(const struct rte_hash *h,
477 unsigned int nr_flow)
481 mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
482 ALL_32_BITS, ALL_32_BITS} };
483 mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
485 for (i = 0; i < nr_flow; i++) {
486 struct ipv6_l3fwd_em_route entry;
487 union ipv6_5tuple_host newkey;
489 uint8_t a = (uint8_t)
490 ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
491 uint8_t b = (uint8_t)
492 (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
493 uint8_t c = (uint8_t)
494 ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
496 /* Create the ipv6 exact match flow */
497 memset(&entry, 0, sizeof(entry));
498 switch (i & (NUMBER_PORT_USED - 1)) {
500 entry = ipv6_l3fwd_em_route_array[0];
503 entry = ipv6_l3fwd_em_route_array[1];
506 entry = ipv6_l3fwd_em_route_array[2];
509 entry = ipv6_l3fwd_em_route_array[3];
512 entry.key.ip_dst[13] = c;
513 entry.key.ip_dst[14] = b;
514 entry.key.ip_dst[15] = a;
515 convert_ipv6_5tuple(&entry.key, &newkey);
516 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
519 rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
521 ipv6_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
524 printf("Hash: Adding 0x%x keys\n", nr_flow);
527 /* main processing loop */
529 em_main_loop(__attribute__((unused)) void *dummy)
531 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
533 uint64_t prev_tsc, diff_tsc, cur_tsc;
535 uint8_t portid, queueid;
536 struct lcore_conf *qconf;
537 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
538 US_PER_S * BURST_TX_DRAIN_US;
542 lcore_id = rte_lcore_id();
543 qconf = &lcore_conf[lcore_id];
545 if (qconf->n_rx_queue == 0) {
546 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
550 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
552 for (i = 0; i < qconf->n_rx_queue; i++) {
554 portid = qconf->rx_queue_list[i].port_id;
555 queueid = qconf->rx_queue_list[i].queue_id;
557 " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n",
558 lcore_id, portid, queueid);
561 while (!force_quit) {
563 cur_tsc = rte_rdtsc();
566 * TX burst queue drain
568 diff_tsc = cur_tsc - prev_tsc;
569 if (unlikely(diff_tsc > drain_tsc)) {
571 for (i = 0; i < qconf->n_tx_port; ++i) {
572 portid = qconf->tx_port_id[i];
573 if (qconf->tx_mbufs[portid].len == 0)
576 qconf->tx_mbufs[portid].len,
578 qconf->tx_mbufs[portid].len = 0;
585 * Read packet from RX queues
587 for (i = 0; i < qconf->n_rx_queue; ++i) {
588 portid = qconf->rx_queue_list[i].port_id;
589 queueid = qconf->rx_queue_list[i].queue_id;
590 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
596 * For SSE4_1 use ENABLE_MULTI_BUFFER_OPTIMIZE=1
599 #if defined(__SSE4_1__)
600 l3fwd_em_send_packets(nb_rx, pkts_burst,
603 l3fwd_em_no_opt_send_packets(nb_rx, pkts_burst,
605 #endif /* __SSE_4_1__ */
613 * Initialize exact match (hash) parameters.
616 setup_hash(const int socketid)
618 struct rte_hash_parameters ipv4_l3fwd_hash_params = {
620 .entries = L3FWD_HASH_ENTRIES,
621 .key_len = sizeof(union ipv4_5tuple_host),
622 .hash_func = ipv4_hash_crc,
623 .hash_func_init_val = 0,
626 struct rte_hash_parameters ipv6_l3fwd_hash_params = {
628 .entries = L3FWD_HASH_ENTRIES,
629 .key_len = sizeof(union ipv6_5tuple_host),
630 .hash_func = ipv6_hash_crc,
631 .hash_func_init_val = 0,
636 /* create ipv4 hash */
637 snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
638 ipv4_l3fwd_hash_params.name = s;
639 ipv4_l3fwd_hash_params.socket_id = socketid;
640 ipv4_l3fwd_em_lookup_struct[socketid] =
641 rte_hash_create(&ipv4_l3fwd_hash_params);
642 if (ipv4_l3fwd_em_lookup_struct[socketid] == NULL)
643 rte_exit(EXIT_FAILURE,
644 "Unable to create the l3fwd hash on socket %d\n",
647 /* create ipv6 hash */
648 snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
649 ipv6_l3fwd_hash_params.name = s;
650 ipv6_l3fwd_hash_params.socket_id = socketid;
651 ipv6_l3fwd_em_lookup_struct[socketid] =
652 rte_hash_create(&ipv6_l3fwd_hash_params);
653 if (ipv6_l3fwd_em_lookup_struct[socketid] == NULL)
654 rte_exit(EXIT_FAILURE,
655 "Unable to create the l3fwd hash on socket %d\n",
658 if (hash_entry_number != HASH_ENTRY_NUMBER_DEFAULT) {
659 /* For testing hash matching with a large number of flows we
660 * generate millions of IP 5-tuples with an incremented dst
661 * address to initialize the hash table. */
663 /* populate the ipv4 hash */
664 populate_ipv4_many_flow_into_table(
665 ipv4_l3fwd_em_lookup_struct[socketid],
668 /* populate the ipv6 hash */
669 populate_ipv6_many_flow_into_table(
670 ipv6_l3fwd_em_lookup_struct[socketid],
675 * Use data in ipv4/ipv6 l3fwd lookup table
676 * directly to initialize the hash table.
679 /* populate the ipv4 hash */
680 populate_ipv4_few_flow_into_table(
681 ipv4_l3fwd_em_lookup_struct[socketid]);
683 /* populate the ipv6 hash */
684 populate_ipv6_few_flow_into_table(
685 ipv6_l3fwd_em_lookup_struct[socketid]);
690 /* Return ipv4/ipv6 em fwd lookup struct. */
692 em_get_ipv4_l3fwd_lookup_struct(const int socketid)
694 return ipv4_l3fwd_em_lookup_struct[socketid];
698 em_get_ipv6_l3fwd_lookup_struct(const int socketid)
700 return ipv6_l3fwd_em_lookup_struct[socketid];