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_mempool.h>
21 #include <rte_cycles.h>
31 struct ipv4_l3fwd_lpm_route {
37 struct ipv6_l3fwd_lpm_route {
43 static struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = {
44 {IPv4(1, 1, 1, 0), 24, 0},
45 {IPv4(2, 1, 1, 0), 24, 1},
46 {IPv4(3, 1, 1, 0), 24, 2},
47 {IPv4(4, 1, 1, 0), 24, 3},
48 {IPv4(5, 1, 1, 0), 24, 4},
49 {IPv4(6, 1, 1, 0), 24, 5},
50 {IPv4(7, 1, 1, 0), 24, 6},
51 {IPv4(8, 1, 1, 0), 24, 7},
54 static struct ipv6_l3fwd_lpm_route ipv6_l3fwd_lpm_route_array[] = {
55 {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 0},
56 {{2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 1},
57 {{3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 2},
58 {{4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 3},
59 {{5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 4},
60 {{6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 5},
61 {{7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 6},
62 {{8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 7},
65 #define IPV4_L3FWD_LPM_NUM_ROUTES \
66 (sizeof(ipv4_l3fwd_lpm_route_array) / sizeof(ipv4_l3fwd_lpm_route_array[0]))
67 #define IPV6_L3FWD_LPM_NUM_ROUTES \
68 (sizeof(ipv6_l3fwd_lpm_route_array) / sizeof(ipv6_l3fwd_lpm_route_array[0]))
70 #define IPV4_L3FWD_LPM_MAX_RULES 1024
71 #define IPV4_L3FWD_LPM_NUMBER_TBL8S (1 << 8)
72 #define IPV6_L3FWD_LPM_MAX_RULES 1024
73 #define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
75 struct rte_lpm *ipv4_l3fwd_lpm_lookup_struct[NB_SOCKETS];
76 struct rte_lpm6 *ipv6_l3fwd_lpm_lookup_struct[NB_SOCKETS];
78 static inline uint16_t
79 lpm_get_ipv4_dst_port(void *ipv4_hdr, uint16_t portid, void *lookup_struct)
82 struct rte_lpm *ipv4_l3fwd_lookup_struct =
83 (struct rte_lpm *)lookup_struct;
85 return (uint16_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
86 rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
87 &next_hop) == 0) ? next_hop : portid);
90 static inline uint16_t
91 lpm_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct)
94 struct rte_lpm6 *ipv6_l3fwd_lookup_struct =
95 (struct rte_lpm6 *)lookup_struct;
97 return (uint16_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
98 ((struct ipv6_hdr *)ipv6_hdr)->dst_addr,
99 &next_hop) == 0) ? next_hop : portid);
102 static __rte_always_inline uint16_t
103 lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
106 struct ipv6_hdr *ipv6_hdr;
107 struct ipv4_hdr *ipv4_hdr;
108 struct ether_hdr *eth_hdr;
110 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
112 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
113 ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
115 return lpm_get_ipv4_dst_port(ipv4_hdr, portid,
116 qconf->ipv4_lookup_struct);
117 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
119 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
120 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
122 return lpm_get_ipv6_dst_port(ipv6_hdr, portid,
123 qconf->ipv6_lookup_struct);
130 * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
131 * precalculated. If packet is ipv6 dst_addr is taken directly from packet
132 * header and dst_ipv4 value is not used.
134 static __rte_always_inline uint16_t
135 lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
136 uint32_t dst_ipv4, uint16_t portid)
139 struct ipv6_hdr *ipv6_hdr;
140 struct ether_hdr *eth_hdr;
142 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
143 return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
144 dst_ipv4, &next_hop) == 0)
145 ? next_hop : portid);
147 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
149 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
150 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
152 return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
153 ipv6_hdr->dst_addr, &next_hop) == 0)
154 ? next_hop : portid);
161 #if defined(RTE_ARCH_X86)
162 #include "l3fwd_lpm_sse.h"
163 #elif defined RTE_MACHINE_CPUFLAG_NEON
164 #include "l3fwd_lpm_neon.h"
165 #elif defined(RTE_ARCH_PPC_64)
166 #include "l3fwd_lpm_altivec.h"
168 #include "l3fwd_lpm.h"
171 /* main processing loop */
173 lpm_main_loop(__attribute__((unused)) void *dummy)
175 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
177 uint64_t prev_tsc, diff_tsc, cur_tsc;
181 struct lcore_conf *qconf;
182 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
183 US_PER_S * BURST_TX_DRAIN_US;
187 lcore_id = rte_lcore_id();
188 qconf = &lcore_conf[lcore_id];
190 if (qconf->n_rx_queue == 0) {
191 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
195 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
197 for (i = 0; i < qconf->n_rx_queue; i++) {
199 portid = qconf->rx_queue_list[i].port_id;
200 queueid = qconf->rx_queue_list[i].queue_id;
202 " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
203 lcore_id, portid, queueid);
206 while (!force_quit) {
208 cur_tsc = rte_rdtsc();
211 * TX burst queue drain
213 diff_tsc = cur_tsc - prev_tsc;
214 if (unlikely(diff_tsc > drain_tsc)) {
216 for (i = 0; i < qconf->n_tx_port; ++i) {
217 portid = qconf->tx_port_id[i];
218 if (qconf->tx_mbufs[portid].len == 0)
221 qconf->tx_mbufs[portid].len,
223 qconf->tx_mbufs[portid].len = 0;
230 * Read packet from RX queues
232 for (i = 0; i < qconf->n_rx_queue; ++i) {
233 portid = qconf->rx_queue_list[i].port_id;
234 queueid = qconf->rx_queue_list[i].queue_id;
235 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
240 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON \
241 || defined RTE_ARCH_PPC_64
242 l3fwd_lpm_send_packets(nb_rx, pkts_burst,
245 l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
255 setup_lpm(const int socketid)
257 struct rte_lpm6_config config;
258 struct rte_lpm_config config_ipv4;
263 /* create the LPM table */
264 config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
265 config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
266 config_ipv4.flags = 0;
267 snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
268 ipv4_l3fwd_lpm_lookup_struct[socketid] =
269 rte_lpm_create(s, socketid, &config_ipv4);
270 if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
271 rte_exit(EXIT_FAILURE,
272 "Unable to create the l3fwd LPM table on socket %d\n",
275 /* populate the LPM table */
276 for (i = 0; i < IPV4_L3FWD_LPM_NUM_ROUTES; i++) {
278 /* skip unused ports */
279 if ((1 << ipv4_l3fwd_lpm_route_array[i].if_out &
280 enabled_port_mask) == 0)
283 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
284 ipv4_l3fwd_lpm_route_array[i].ip,
285 ipv4_l3fwd_lpm_route_array[i].depth,
286 ipv4_l3fwd_lpm_route_array[i].if_out);
289 rte_exit(EXIT_FAILURE,
290 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
294 printf("LPM: Adding route 0x%08x / %d (%d)\n",
295 (unsigned)ipv4_l3fwd_lpm_route_array[i].ip,
296 ipv4_l3fwd_lpm_route_array[i].depth,
297 ipv4_l3fwd_lpm_route_array[i].if_out);
300 /* create the LPM6 table */
301 snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
303 config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
304 config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
306 ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
308 if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
309 rte_exit(EXIT_FAILURE,
310 "Unable to create the l3fwd LPM table on socket %d\n",
313 /* populate the LPM table */
314 for (i = 0; i < IPV6_L3FWD_LPM_NUM_ROUTES; i++) {
316 /* skip unused ports */
317 if ((1 << ipv6_l3fwd_lpm_route_array[i].if_out &
318 enabled_port_mask) == 0)
321 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
322 ipv6_l3fwd_lpm_route_array[i].ip,
323 ipv6_l3fwd_lpm_route_array[i].depth,
324 ipv6_l3fwd_lpm_route_array[i].if_out);
327 rte_exit(EXIT_FAILURE,
328 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
332 printf("LPM: Adding route %s / %d (%d)\n",
334 ipv6_l3fwd_lpm_route_array[i].depth,
335 ipv6_l3fwd_lpm_route_array[i].if_out);
340 lpm_check_ptype(int portid)
343 int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
344 uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
346 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
350 uint32_t ptypes[ret];
352 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
353 for (i = 0; i < ret; ++i) {
354 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
356 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
360 if (ptype_l3_ipv4 == 0)
361 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
363 if (ptype_l3_ipv6 == 0)
364 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
366 if (ptype_l3_ipv4 && ptype_l3_ipv6)
374 lpm_parse_ptype(struct rte_mbuf *m)
376 struct ether_hdr *eth_hdr;
377 uint32_t packet_type = RTE_PTYPE_UNKNOWN;
380 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
381 ether_type = eth_hdr->ether_type;
382 if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
383 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
384 else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
385 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
387 m->packet_type = packet_type;
391 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
392 struct rte_mbuf *pkts[], uint16_t nb_pkts,
393 uint16_t max_pkts __rte_unused,
394 void *user_param __rte_unused)
398 for (i = 0; i < nb_pkts; ++i)
399 lpm_parse_ptype(pkts[i]);
404 /* Return ipv4/ipv6 lpm fwd lookup struct. */
406 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
408 return ipv4_l3fwd_lpm_lookup_struct[socketid];
412 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
414 return ipv6_l3fwd_lpm_lookup_struct[socketid];