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38 #include <sys/types.h>
40 #include <sys/queue.h>
45 #include <netinet/in.h>
47 #include <rte_debug.h>
48 #include <rte_ether.h>
49 #include <rte_ethdev.h>
51 #include <rte_mempool.h>
52 #include <rte_cycles.h>
61 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
62 #include <rte_hash_crc.h>
63 #define DEFAULT_HASH_FUNC rte_hash_crc
65 #include <rte_jhash.h>
66 #define DEFAULT_HASH_FUNC rte_jhash
67 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
69 #define IPV6_ADDR_LEN 16
77 } __attribute__((__packed__));
79 union ipv4_5tuple_host {
92 #define XMM_NUM_IN_IPV6_5TUPLE 3
95 uint8_t ip_dst[IPV6_ADDR_LEN];
96 uint8_t ip_src[IPV6_ADDR_LEN];
100 } __attribute__((__packed__));
102 union ipv6_5tuple_host {
107 uint8_t ip_src[IPV6_ADDR_LEN];
108 uint8_t ip_dst[IPV6_ADDR_LEN];
113 xmm_t xmm[XMM_NUM_IN_IPV6_5TUPLE];
118 struct ipv4_l3fwd_em_route {
119 struct ipv4_5tuple key;
123 struct ipv6_l3fwd_em_route {
124 struct ipv6_5tuple key;
128 static struct ipv4_l3fwd_em_route ipv4_l3fwd_em_route_array[] = {
129 {{IPv4(101, 0, 0, 0), IPv4(100, 10, 0, 1), 101, 11, IPPROTO_TCP}, 0},
130 {{IPv4(201, 0, 0, 0), IPv4(200, 20, 0, 1), 102, 12, IPPROTO_TCP}, 1},
131 {{IPv4(111, 0, 0, 0), IPv4(100, 30, 0, 1), 101, 11, IPPROTO_TCP}, 2},
132 {{IPv4(211, 0, 0, 0), IPv4(200, 40, 0, 1), 102, 12, IPPROTO_TCP}, 3},
135 static struct ipv6_l3fwd_em_route ipv6_l3fwd_em_route_array[] = {
137 {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
138 {0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
139 101, 11, IPPROTO_TCP}, 0},
142 {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
143 {0xfe, 0x90, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
144 102, 12, IPPROTO_TCP}, 1},
147 {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
148 {0xfe, 0xa0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
149 101, 11, IPPROTO_TCP}, 2},
152 {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1e, 0x67, 0xff, 0xfe, 0, 0, 0},
153 {0xfe, 0xb0, 0, 0, 0, 0, 0, 0, 0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
154 102, 12, IPPROTO_TCP}, 3},
157 struct rte_hash *ipv4_l3fwd_em_lookup_struct[NB_SOCKETS];
158 struct rte_hash *ipv6_l3fwd_em_lookup_struct[NB_SOCKETS];
160 static inline uint32_t
161 ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
164 const union ipv4_5tuple_host *k;
170 p = (const uint32_t *)&k->port_src;
172 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
173 init_val = rte_hash_crc_4byte(t, init_val);
174 init_val = rte_hash_crc_4byte(k->ip_src, init_val);
175 init_val = rte_hash_crc_4byte(k->ip_dst, init_val);
176 init_val = rte_hash_crc_4byte(*p, init_val);
177 #else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
178 init_val = rte_jhash_1word(t, init_val);
179 init_val = rte_jhash_1word(k->ip_src, init_val);
180 init_val = rte_jhash_1word(k->ip_dst, init_val);
181 init_val = rte_jhash_1word(*p, init_val);
182 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
187 static inline uint32_t
188 ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len,
191 const union ipv6_5tuple_host *k;
194 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
195 const uint32_t *ip_src0, *ip_src1, *ip_src2, *ip_src3;
196 const uint32_t *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3;
197 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
201 p = (const uint32_t *)&k->port_src;
203 #ifdef RTE_MACHINE_CPUFLAG_SSE4_2
204 ip_src0 = (const uint32_t *) k->ip_src;
205 ip_src1 = (const uint32_t *)(k->ip_src+4);
206 ip_src2 = (const uint32_t *)(k->ip_src+8);
207 ip_src3 = (const uint32_t *)(k->ip_src+12);
208 ip_dst0 = (const uint32_t *) k->ip_dst;
209 ip_dst1 = (const uint32_t *)(k->ip_dst+4);
210 ip_dst2 = (const uint32_t *)(k->ip_dst+8);
211 ip_dst3 = (const uint32_t *)(k->ip_dst+12);
212 init_val = rte_hash_crc_4byte(t, init_val);
213 init_val = rte_hash_crc_4byte(*ip_src0, init_val);
214 init_val = rte_hash_crc_4byte(*ip_src1, init_val);
215 init_val = rte_hash_crc_4byte(*ip_src2, init_val);
216 init_val = rte_hash_crc_4byte(*ip_src3, init_val);
217 init_val = rte_hash_crc_4byte(*ip_dst0, init_val);
218 init_val = rte_hash_crc_4byte(*ip_dst1, init_val);
219 init_val = rte_hash_crc_4byte(*ip_dst2, init_val);
220 init_val = rte_hash_crc_4byte(*ip_dst3, init_val);
221 init_val = rte_hash_crc_4byte(*p, init_val);
222 #else /* RTE_MACHINE_CPUFLAG_SSE4_2 */
223 init_val = rte_jhash_1word(t, init_val);
224 init_val = rte_jhash(k->ip_src,
225 sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
226 init_val = rte_jhash(k->ip_dst,
227 sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
228 init_val = rte_jhash_1word(*p, init_val);
229 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
233 #define IPV4_L3FWD_EM_NUM_ROUTES \
234 (sizeof(ipv4_l3fwd_em_route_array) / sizeof(ipv4_l3fwd_em_route_array[0]))
236 #define IPV6_L3FWD_EM_NUM_ROUTES \
237 (sizeof(ipv6_l3fwd_em_route_array) / sizeof(ipv6_l3fwd_em_route_array[0]))
239 static uint8_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
240 static uint8_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
242 static rte_xmm_t mask0;
243 static rte_xmm_t mask1;
244 static rte_xmm_t mask2;
246 #if defined(__SSE2__)
248 em_mask_key(void *key, xmm_t mask)
250 __m128i data = _mm_loadu_si128((__m128i *)(key));
252 return _mm_and_si128(data, mask);
254 #elif defined(RTE_MACHINE_CPUFLAG_NEON)
256 em_mask_key(void *key, xmm_t mask)
258 int32x4_t data = vld1q_s32((int32_t *)key);
260 return vandq_s32(data, mask);
264 static inline uint8_t
265 em_get_ipv4_dst_port(void *ipv4_hdr, uint8_t portid, void *lookup_struct)
268 union ipv4_5tuple_host key;
269 struct rte_hash *ipv4_l3fwd_lookup_struct =
270 (struct rte_hash *)lookup_struct;
272 ipv4_hdr = (uint8_t *)ipv4_hdr + offsetof(struct ipv4_hdr, time_to_live);
275 * Get 5 tuple: dst port, src port, dst IP address,
276 * src IP address and protocol.
278 key.xmm = em_mask_key(ipv4_hdr, mask0.x);
280 /* Find destination port */
281 ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
282 return (uint8_t)((ret < 0) ? portid : ipv4_l3fwd_out_if[ret]);
285 static inline uint8_t
286 em_get_ipv6_dst_port(void *ipv6_hdr, uint8_t portid, void *lookup_struct)
289 union ipv6_5tuple_host key;
290 struct rte_hash *ipv6_l3fwd_lookup_struct =
291 (struct rte_hash *)lookup_struct;
293 ipv6_hdr = (uint8_t *)ipv6_hdr + offsetof(struct ipv6_hdr, payload_len);
294 void *data0 = ipv6_hdr;
295 void *data1 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t);
296 void *data2 = ((uint8_t *)ipv6_hdr) + sizeof(xmm_t) + sizeof(xmm_t);
298 /* Get part of 5 tuple: src IP address lower 96 bits and protocol */
299 key.xmm[0] = em_mask_key(data0, mask1.x);
302 * Get part of 5 tuple: dst IP address lower 96 bits
303 * and src IP address higher 32 bits.
305 key.xmm[1] = *(xmm_t *)data1;
308 * Get part of 5 tuple: dst port and src port
309 * and dst IP address higher 32 bits.
311 key.xmm[2] = em_mask_key(data2, mask2.x);
313 /* Find destination port */
314 ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
315 return (uint8_t)((ret < 0) ? portid : ipv6_l3fwd_out_if[ret]);
318 #if defined(__SSE4_1__)
319 #if defined(NO_HASH_MULTI_LOOKUP)
320 #include "l3fwd_em_sse.h"
322 #include "l3fwd_em_hlm_sse.h"
325 #include "l3fwd_em.h"
329 convert_ipv4_5tuple(struct ipv4_5tuple *key1,
330 union ipv4_5tuple_host *key2)
332 key2->ip_dst = rte_cpu_to_be_32(key1->ip_dst);
333 key2->ip_src = rte_cpu_to_be_32(key1->ip_src);
334 key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
335 key2->port_src = rte_cpu_to_be_16(key1->port_src);
336 key2->proto = key1->proto;
342 convert_ipv6_5tuple(struct ipv6_5tuple *key1,
343 union ipv6_5tuple_host *key2)
347 for (i = 0; i < 16; i++) {
348 key2->ip_dst[i] = key1->ip_dst[i];
349 key2->ip_src[i] = key1->ip_src[i];
351 key2->port_dst = rte_cpu_to_be_16(key1->port_dst);
352 key2->port_src = rte_cpu_to_be_16(key1->port_src);
353 key2->proto = key1->proto;
359 #define BYTE_VALUE_MAX 256
360 #define ALL_32_BITS 0xffffffff
361 #define BIT_8_TO_15 0x0000ff00
364 populate_ipv4_few_flow_into_table(const struct rte_hash *h)
369 mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
370 ALL_32_BITS, ALL_32_BITS} };
372 for (i = 0; i < IPV4_L3FWD_EM_NUM_ROUTES; i++) {
373 struct ipv4_l3fwd_em_route entry;
374 union ipv4_5tuple_host newkey;
376 entry = ipv4_l3fwd_em_route_array[i];
377 convert_ipv4_5tuple(&entry.key, &newkey);
378 ret = rte_hash_add_key(h, (void *) &newkey);
380 rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
381 " to the l3fwd hash.\n", i);
383 ipv4_l3fwd_out_if[ret] = entry.if_out;
385 printf("Hash: Adding 0x%" PRIx64 " keys\n",
386 (uint64_t)IPV4_L3FWD_EM_NUM_ROUTES);
389 #define BIT_16_TO_23 0x00ff0000
391 populate_ipv6_few_flow_into_table(const struct rte_hash *h)
396 mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
397 ALL_32_BITS, ALL_32_BITS} };
399 mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
401 for (i = 0; i < IPV6_L3FWD_EM_NUM_ROUTES; i++) {
402 struct ipv6_l3fwd_em_route entry;
403 union ipv6_5tuple_host newkey;
405 entry = ipv6_l3fwd_em_route_array[i];
406 convert_ipv6_5tuple(&entry.key, &newkey);
407 ret = rte_hash_add_key(h, (void *) &newkey);
409 rte_exit(EXIT_FAILURE, "Unable to add entry %" PRIu32
410 " to the l3fwd hash.\n", i);
412 ipv6_l3fwd_out_if[ret] = entry.if_out;
414 printf("Hash: Adding 0x%" PRIx64 "keys\n",
415 (uint64_t)IPV6_L3FWD_EM_NUM_ROUTES);
418 #define NUMBER_PORT_USED 4
420 populate_ipv4_many_flow_into_table(const struct rte_hash *h,
421 unsigned int nr_flow)
425 mask0 = (rte_xmm_t){.u32 = {BIT_8_TO_15, ALL_32_BITS,
426 ALL_32_BITS, ALL_32_BITS} };
428 for (i = 0; i < nr_flow; i++) {
429 struct ipv4_l3fwd_em_route entry;
430 union ipv4_5tuple_host newkey;
432 uint8_t a = (uint8_t)
433 ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
434 uint8_t b = (uint8_t)
435 (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
436 uint8_t c = (uint8_t)
437 ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
439 /* Create the ipv4 exact match flow */
440 memset(&entry, 0, sizeof(entry));
441 switch (i & (NUMBER_PORT_USED - 1)) {
443 entry = ipv4_l3fwd_em_route_array[0];
444 entry.key.ip_dst = IPv4(101, c, b, a);
447 entry = ipv4_l3fwd_em_route_array[1];
448 entry.key.ip_dst = IPv4(201, c, b, a);
451 entry = ipv4_l3fwd_em_route_array[2];
452 entry.key.ip_dst = IPv4(111, c, b, a);
455 entry = ipv4_l3fwd_em_route_array[3];
456 entry.key.ip_dst = IPv4(211, c, b, a);
459 convert_ipv4_5tuple(&entry.key, &newkey);
460 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
463 rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
465 ipv4_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
468 printf("Hash: Adding 0x%x keys\n", nr_flow);
472 populate_ipv6_many_flow_into_table(const struct rte_hash *h,
473 unsigned int nr_flow)
477 mask1 = (rte_xmm_t){.u32 = {BIT_16_TO_23, ALL_32_BITS,
478 ALL_32_BITS, ALL_32_BITS} };
479 mask2 = (rte_xmm_t){.u32 = {ALL_32_BITS, ALL_32_BITS, 0, 0} };
481 for (i = 0; i < nr_flow; i++) {
482 struct ipv6_l3fwd_em_route entry;
483 union ipv6_5tuple_host newkey;
485 uint8_t a = (uint8_t)
486 ((i/NUMBER_PORT_USED)%BYTE_VALUE_MAX);
487 uint8_t b = (uint8_t)
488 (((i/NUMBER_PORT_USED)/BYTE_VALUE_MAX)%BYTE_VALUE_MAX);
489 uint8_t c = (uint8_t)
490 ((i/NUMBER_PORT_USED)/(BYTE_VALUE_MAX*BYTE_VALUE_MAX));
492 /* Create the ipv6 exact match flow */
493 memset(&entry, 0, sizeof(entry));
494 switch (i & (NUMBER_PORT_USED - 1)) {
496 entry = ipv6_l3fwd_em_route_array[0];
499 entry = ipv6_l3fwd_em_route_array[1];
502 entry = ipv6_l3fwd_em_route_array[2];
505 entry = ipv6_l3fwd_em_route_array[3];
508 entry.key.ip_dst[13] = c;
509 entry.key.ip_dst[14] = b;
510 entry.key.ip_dst[15] = a;
511 convert_ipv6_5tuple(&entry.key, &newkey);
512 int32_t ret = rte_hash_add_key(h, (void *) &newkey);
515 rte_exit(EXIT_FAILURE, "Unable to add entry %u\n", i);
517 ipv6_l3fwd_out_if[ret] = (uint8_t) entry.if_out;
520 printf("Hash: Adding 0x%x keys\n", nr_flow);
524 * 1. IP packets without extension;
525 * 2. L4 payload should be either TCP or UDP.
528 em_check_ptype(int portid)
531 int ptype_l3_ipv4_ext = 0;
532 int ptype_l3_ipv6_ext = 0;
533 int ptype_l4_tcp = 0;
534 int ptype_l4_udp = 0;
535 uint32_t ptype_mask = RTE_PTYPE_L3_MASK | RTE_PTYPE_L4_MASK;
537 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
541 uint32_t ptypes[ret];
543 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
544 for (i = 0; i < ret; ++i) {
546 case RTE_PTYPE_L3_IPV4_EXT:
547 ptype_l3_ipv4_ext = 1;
549 case RTE_PTYPE_L3_IPV6_EXT:
550 ptype_l3_ipv6_ext = 1;
552 case RTE_PTYPE_L4_TCP:
555 case RTE_PTYPE_L4_UDP:
561 if (ptype_l3_ipv4_ext == 0)
562 printf("port %d cannot parse RTE_PTYPE_L3_IPV4_EXT\n", portid);
563 if (ptype_l3_ipv6_ext == 0)
564 printf("port %d cannot parse RTE_PTYPE_L3_IPV6_EXT\n", portid);
565 if (!ptype_l3_ipv4_ext || !ptype_l3_ipv6_ext)
568 if (ptype_l4_tcp == 0)
569 printf("port %d cannot parse RTE_PTYPE_L4_TCP\n", portid);
570 if (ptype_l4_udp == 0)
571 printf("port %d cannot parse RTE_PTYPE_L4_UDP\n", portid);
572 if (ptype_l4_tcp && ptype_l4_udp)
579 em_parse_ptype(struct rte_mbuf *m)
581 struct ether_hdr *eth_hdr;
582 uint32_t packet_type = RTE_PTYPE_UNKNOWN;
586 struct ipv4_hdr *ipv4_hdr;
587 struct ipv6_hdr *ipv6_hdr;
589 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
590 ether_type = eth_hdr->ether_type;
591 l3 = (uint8_t *)eth_hdr + sizeof(struct ether_hdr);
592 if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4)) {
593 ipv4_hdr = (struct ipv4_hdr *)l3;
594 hdr_len = (ipv4_hdr->version_ihl & IPV4_HDR_IHL_MASK) *
596 if (hdr_len == sizeof(struct ipv4_hdr)) {
597 packet_type |= RTE_PTYPE_L3_IPV4;
598 if (ipv4_hdr->next_proto_id == IPPROTO_TCP)
599 packet_type |= RTE_PTYPE_L4_TCP;
600 else if (ipv4_hdr->next_proto_id == IPPROTO_UDP)
601 packet_type |= RTE_PTYPE_L4_UDP;
603 packet_type |= RTE_PTYPE_L3_IPV4_EXT;
604 } else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4)) {
605 ipv6_hdr = (struct ipv6_hdr *)l3;
606 if (ipv6_hdr->proto == IPPROTO_TCP)
607 packet_type |= RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
608 else if (ipv6_hdr->proto == IPPROTO_UDP)
609 packet_type |= RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
611 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
614 m->packet_type = packet_type;
618 em_cb_parse_ptype(uint8_t port __rte_unused, uint16_t queue __rte_unused,
619 struct rte_mbuf *pkts[], uint16_t nb_pkts,
620 uint16_t max_pkts __rte_unused,
621 void *user_param __rte_unused)
625 for (i = 0; i < nb_pkts; ++i)
626 em_parse_ptype(pkts[i]);
631 /* main processing loop */
633 em_main_loop(__attribute__((unused)) void *dummy)
635 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
637 uint64_t prev_tsc, diff_tsc, cur_tsc;
639 uint8_t portid, queueid;
640 struct lcore_conf *qconf;
641 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
642 US_PER_S * BURST_TX_DRAIN_US;
646 lcore_id = rte_lcore_id();
647 qconf = &lcore_conf[lcore_id];
649 if (qconf->n_rx_queue == 0) {
650 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
654 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
656 for (i = 0; i < qconf->n_rx_queue; i++) {
658 portid = qconf->rx_queue_list[i].port_id;
659 queueid = qconf->rx_queue_list[i].queue_id;
661 " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n",
662 lcore_id, portid, queueid);
665 while (!force_quit) {
667 cur_tsc = rte_rdtsc();
670 * TX burst queue drain
672 diff_tsc = cur_tsc - prev_tsc;
673 if (unlikely(diff_tsc > drain_tsc)) {
675 for (i = 0; i < qconf->n_tx_port; ++i) {
676 portid = qconf->tx_port_id[i];
677 if (qconf->tx_mbufs[portid].len == 0)
680 qconf->tx_mbufs[portid].len,
682 qconf->tx_mbufs[portid].len = 0;
689 * Read packet from RX queues
691 for (i = 0; i < qconf->n_rx_queue; ++i) {
692 portid = qconf->rx_queue_list[i].port_id;
693 queueid = qconf->rx_queue_list[i].queue_id;
694 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
699 #if defined(__SSE4_1__)
700 l3fwd_em_send_packets(nb_rx, pkts_burst,
703 l3fwd_em_no_opt_send_packets(nb_rx, pkts_burst,
705 #endif /* __SSE_4_1__ */
713 * Initialize exact match (hash) parameters.
716 setup_hash(const int socketid)
718 struct rte_hash_parameters ipv4_l3fwd_hash_params = {
720 .entries = L3FWD_HASH_ENTRIES,
721 .key_len = sizeof(union ipv4_5tuple_host),
722 .hash_func = ipv4_hash_crc,
723 .hash_func_init_val = 0,
726 struct rte_hash_parameters ipv6_l3fwd_hash_params = {
728 .entries = L3FWD_HASH_ENTRIES,
729 .key_len = sizeof(union ipv6_5tuple_host),
730 .hash_func = ipv6_hash_crc,
731 .hash_func_init_val = 0,
736 /* create ipv4 hash */
737 snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
738 ipv4_l3fwd_hash_params.name = s;
739 ipv4_l3fwd_hash_params.socket_id = socketid;
740 ipv4_l3fwd_em_lookup_struct[socketid] =
741 rte_hash_create(&ipv4_l3fwd_hash_params);
742 if (ipv4_l3fwd_em_lookup_struct[socketid] == NULL)
743 rte_exit(EXIT_FAILURE,
744 "Unable to create the l3fwd hash on socket %d\n",
747 /* create ipv6 hash */
748 snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
749 ipv6_l3fwd_hash_params.name = s;
750 ipv6_l3fwd_hash_params.socket_id = socketid;
751 ipv6_l3fwd_em_lookup_struct[socketid] =
752 rte_hash_create(&ipv6_l3fwd_hash_params);
753 if (ipv6_l3fwd_em_lookup_struct[socketid] == NULL)
754 rte_exit(EXIT_FAILURE,
755 "Unable to create the l3fwd hash on socket %d\n",
758 if (hash_entry_number != HASH_ENTRY_NUMBER_DEFAULT) {
759 /* For testing hash matching with a large number of flows we
760 * generate millions of IP 5-tuples with an incremented dst
761 * address to initialize the hash table. */
763 /* populate the ipv4 hash */
764 populate_ipv4_many_flow_into_table(
765 ipv4_l3fwd_em_lookup_struct[socketid],
768 /* populate the ipv6 hash */
769 populate_ipv6_many_flow_into_table(
770 ipv6_l3fwd_em_lookup_struct[socketid],
775 * Use data in ipv4/ipv6 l3fwd lookup table
776 * directly to initialize the hash table.
779 /* populate the ipv4 hash */
780 populate_ipv4_few_flow_into_table(
781 ipv4_l3fwd_em_lookup_struct[socketid]);
783 /* populate the ipv6 hash */
784 populate_ipv6_few_flow_into_table(
785 ipv6_l3fwd_em_lookup_struct[socketid]);
790 /* Return ipv4/ipv6 em fwd lookup struct. */
792 em_get_ipv4_l3fwd_lookup_struct(const int socketid)
794 return ipv4_l3fwd_em_lookup_struct[socketid];
798 em_get_ipv6_l3fwd_lookup_struct(const int socketid)
800 return ipv6_l3fwd_em_lookup_struct[socketid];