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 /* 192.18.0.0/16 are set aside for RFC2544 benchmarking. */
43 static struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = {
44 {IPv4(192, 18, 0, 0), 24, 0},
45 {IPv4(192, 18, 1, 0), 24, 1},
46 {IPv4(192, 18, 2, 0), 24, 2},
47 {IPv4(192, 18, 3, 0), 24, 3},
48 {IPv4(192, 18, 4, 0), 24, 4},
49 {IPv4(192, 18, 5, 0), 24, 5},
50 {IPv4(192, 18, 6, 0), 24, 6},
51 {IPv4(192, 18, 7, 0), 24, 7},
54 /* 2001:0200::/48 is IANA reserved range for IPv6 benchmarking (RFC5180) */
55 static struct ipv6_l3fwd_lpm_route ipv6_l3fwd_lpm_route_array[] = {
56 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 48, 0},
57 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0}, 48, 1},
58 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0}, 48, 2},
59 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0}, 48, 3},
60 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0}, 48, 4},
61 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0}, 48, 5},
62 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0}, 48, 6},
63 {{32, 1, 2, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0}, 48, 7},
66 #define IPV4_L3FWD_LPM_NUM_ROUTES \
67 (sizeof(ipv4_l3fwd_lpm_route_array) / sizeof(ipv4_l3fwd_lpm_route_array[0]))
68 #define IPV6_L3FWD_LPM_NUM_ROUTES \
69 (sizeof(ipv6_l3fwd_lpm_route_array) / sizeof(ipv6_l3fwd_lpm_route_array[0]))
71 #define IPV4_L3FWD_LPM_MAX_RULES 1024
72 #define IPV4_L3FWD_LPM_NUMBER_TBL8S (1 << 8)
73 #define IPV6_L3FWD_LPM_MAX_RULES 1024
74 #define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
76 struct rte_lpm *ipv4_l3fwd_lpm_lookup_struct[NB_SOCKETS];
77 struct rte_lpm6 *ipv6_l3fwd_lpm_lookup_struct[NB_SOCKETS];
79 static inline uint16_t
80 lpm_get_ipv4_dst_port(void *ipv4_hdr, uint16_t portid, void *lookup_struct)
83 struct rte_lpm *ipv4_l3fwd_lookup_struct =
84 (struct rte_lpm *)lookup_struct;
86 return (uint16_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
87 rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
88 &next_hop) == 0) ? next_hop : portid);
91 static inline uint16_t
92 lpm_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct)
95 struct rte_lpm6 *ipv6_l3fwd_lookup_struct =
96 (struct rte_lpm6 *)lookup_struct;
98 return (uint16_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
99 ((struct ipv6_hdr *)ipv6_hdr)->dst_addr,
100 &next_hop) == 0) ? next_hop : portid);
103 static __rte_always_inline uint16_t
104 lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
107 struct ipv6_hdr *ipv6_hdr;
108 struct ipv4_hdr *ipv4_hdr;
109 struct ether_hdr *eth_hdr;
111 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
113 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
114 ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
116 return lpm_get_ipv4_dst_port(ipv4_hdr, portid,
117 qconf->ipv4_lookup_struct);
118 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
120 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
121 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
123 return lpm_get_ipv6_dst_port(ipv6_hdr, portid,
124 qconf->ipv6_lookup_struct);
131 * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
132 * precalculated. If packet is ipv6 dst_addr is taken directly from packet
133 * header and dst_ipv4 value is not used.
135 static __rte_always_inline uint16_t
136 lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
137 uint32_t dst_ipv4, uint16_t portid)
140 struct ipv6_hdr *ipv6_hdr;
141 struct ether_hdr *eth_hdr;
143 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
144 return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
145 dst_ipv4, &next_hop) == 0)
146 ? next_hop : portid);
148 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
150 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
151 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
153 return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
154 ipv6_hdr->dst_addr, &next_hop) == 0)
155 ? next_hop : portid);
162 #if defined(RTE_ARCH_X86)
163 #include "l3fwd_lpm_sse.h"
164 #elif defined RTE_MACHINE_CPUFLAG_NEON
165 #include "l3fwd_lpm_neon.h"
166 #elif defined(RTE_ARCH_PPC_64)
167 #include "l3fwd_lpm_altivec.h"
169 #include "l3fwd_lpm.h"
172 /* main processing loop */
174 lpm_main_loop(__attribute__((unused)) void *dummy)
176 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
178 uint64_t prev_tsc, diff_tsc, cur_tsc;
182 struct lcore_conf *qconf;
183 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
184 US_PER_S * BURST_TX_DRAIN_US;
188 lcore_id = rte_lcore_id();
189 qconf = &lcore_conf[lcore_id];
191 if (qconf->n_rx_queue == 0) {
192 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
196 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
198 for (i = 0; i < qconf->n_rx_queue; i++) {
200 portid = qconf->rx_queue_list[i].port_id;
201 queueid = qconf->rx_queue_list[i].queue_id;
203 " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
204 lcore_id, portid, queueid);
207 while (!force_quit) {
209 cur_tsc = rte_rdtsc();
212 * TX burst queue drain
214 diff_tsc = cur_tsc - prev_tsc;
215 if (unlikely(diff_tsc > drain_tsc)) {
217 for (i = 0; i < qconf->n_tx_port; ++i) {
218 portid = qconf->tx_port_id[i];
219 if (qconf->tx_mbufs[portid].len == 0)
222 qconf->tx_mbufs[portid].len,
224 qconf->tx_mbufs[portid].len = 0;
231 * Read packet from RX queues
233 for (i = 0; i < qconf->n_rx_queue; ++i) {
234 portid = qconf->rx_queue_list[i].port_id;
235 queueid = qconf->rx_queue_list[i].queue_id;
236 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
241 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON \
242 || defined RTE_ARCH_PPC_64
243 l3fwd_lpm_send_packets(nb_rx, pkts_burst,
246 l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
256 setup_lpm(const int socketid)
258 struct rte_lpm6_config config;
259 struct rte_lpm_config config_ipv4;
264 /* create the LPM table */
265 config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
266 config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
267 config_ipv4.flags = 0;
268 snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
269 ipv4_l3fwd_lpm_lookup_struct[socketid] =
270 rte_lpm_create(s, socketid, &config_ipv4);
271 if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
272 rte_exit(EXIT_FAILURE,
273 "Unable to create the l3fwd LPM table on socket %d\n",
276 /* populate the LPM table */
277 for (i = 0; i < IPV4_L3FWD_LPM_NUM_ROUTES; i++) {
279 /* skip unused ports */
280 if ((1 << ipv4_l3fwd_lpm_route_array[i].if_out &
281 enabled_port_mask) == 0)
284 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
285 ipv4_l3fwd_lpm_route_array[i].ip,
286 ipv4_l3fwd_lpm_route_array[i].depth,
287 ipv4_l3fwd_lpm_route_array[i].if_out);
290 rte_exit(EXIT_FAILURE,
291 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
295 printf("LPM: Adding route 0x%08x / %d (%d)\n",
296 (unsigned)ipv4_l3fwd_lpm_route_array[i].ip,
297 ipv4_l3fwd_lpm_route_array[i].depth,
298 ipv4_l3fwd_lpm_route_array[i].if_out);
301 /* create the LPM6 table */
302 snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
304 config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
305 config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
307 ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
309 if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
310 rte_exit(EXIT_FAILURE,
311 "Unable to create the l3fwd LPM table on socket %d\n",
314 /* populate the LPM table */
315 for (i = 0; i < IPV6_L3FWD_LPM_NUM_ROUTES; i++) {
317 /* skip unused ports */
318 if ((1 << ipv6_l3fwd_lpm_route_array[i].if_out &
319 enabled_port_mask) == 0)
322 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
323 ipv6_l3fwd_lpm_route_array[i].ip,
324 ipv6_l3fwd_lpm_route_array[i].depth,
325 ipv6_l3fwd_lpm_route_array[i].if_out);
328 rte_exit(EXIT_FAILURE,
329 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
333 printf("LPM: Adding route %s / %d (%d)\n",
335 ipv6_l3fwd_lpm_route_array[i].depth,
336 ipv6_l3fwd_lpm_route_array[i].if_out);
341 lpm_check_ptype(int portid)
344 int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
345 uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
347 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
351 uint32_t ptypes[ret];
353 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
354 for (i = 0; i < ret; ++i) {
355 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
357 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
361 if (ptype_l3_ipv4 == 0)
362 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
364 if (ptype_l3_ipv6 == 0)
365 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
367 if (ptype_l3_ipv4 && ptype_l3_ipv6)
375 lpm_parse_ptype(struct rte_mbuf *m)
377 struct ether_hdr *eth_hdr;
378 uint32_t packet_type = RTE_PTYPE_UNKNOWN;
381 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
382 ether_type = eth_hdr->ether_type;
383 if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
384 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
385 else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
386 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
388 m->packet_type = packet_type;
392 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
393 struct rte_mbuf *pkts[], uint16_t nb_pkts,
394 uint16_t max_pkts __rte_unused,
395 void *user_param __rte_unused)
399 for (i = 0; i < nb_pkts; ++i)
400 lpm_parse_ptype(pkts[i]);
405 /* Return ipv4/ipv6 lpm fwd lookup struct. */
407 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
409 return ipv4_l3fwd_lpm_lookup_struct[socketid];
413 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
415 return ipv6_l3fwd_lpm_lookup_struct[socketid];