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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>
49 #include <rte_mempool.h>
50 #include <rte_cycles.h>
60 struct ipv4_l3fwd_lpm_route {
66 struct ipv6_l3fwd_lpm_route {
72 static struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = {
73 {IPv4(1, 1, 1, 0), 24, 0},
74 {IPv4(2, 1, 1, 0), 24, 1},
75 {IPv4(3, 1, 1, 0), 24, 2},
76 {IPv4(4, 1, 1, 0), 24, 3},
77 {IPv4(5, 1, 1, 0), 24, 4},
78 {IPv4(6, 1, 1, 0), 24, 5},
79 {IPv4(7, 1, 1, 0), 24, 6},
80 {IPv4(8, 1, 1, 0), 24, 7},
83 static struct ipv6_l3fwd_lpm_route ipv6_l3fwd_lpm_route_array[] = {
84 {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 0},
85 {{2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 1},
86 {{3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 2},
87 {{4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 3},
88 {{5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 4},
89 {{6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 5},
90 {{7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 6},
91 {{8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 48, 7},
94 #define IPV4_L3FWD_LPM_NUM_ROUTES \
95 (sizeof(ipv4_l3fwd_lpm_route_array) / sizeof(ipv4_l3fwd_lpm_route_array[0]))
96 #define IPV6_L3FWD_LPM_NUM_ROUTES \
97 (sizeof(ipv6_l3fwd_lpm_route_array) / sizeof(ipv6_l3fwd_lpm_route_array[0]))
99 #define IPV4_L3FWD_LPM_MAX_RULES 1024
100 #define IPV4_L3FWD_LPM_NUMBER_TBL8S (1 << 8)
101 #define IPV6_L3FWD_LPM_MAX_RULES 1024
102 #define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
104 struct rte_lpm *ipv4_l3fwd_lpm_lookup_struct[NB_SOCKETS];
105 struct rte_lpm6 *ipv6_l3fwd_lpm_lookup_struct[NB_SOCKETS];
107 static inline uint16_t
108 lpm_get_ipv4_dst_port(void *ipv4_hdr, uint16_t portid, void *lookup_struct)
111 struct rte_lpm *ipv4_l3fwd_lookup_struct =
112 (struct rte_lpm *)lookup_struct;
114 return (uint16_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
115 rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr),
116 &next_hop) == 0) ? next_hop : portid);
119 static inline uint16_t
120 lpm_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct)
123 struct rte_lpm6 *ipv6_l3fwd_lookup_struct =
124 (struct rte_lpm6 *)lookup_struct;
126 return (uint16_t) ((rte_lpm6_lookup(ipv6_l3fwd_lookup_struct,
127 ((struct ipv6_hdr *)ipv6_hdr)->dst_addr,
128 &next_hop) == 0) ? next_hop : portid);
131 static __rte_always_inline uint16_t
132 lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
135 struct ipv6_hdr *ipv6_hdr;
136 struct ipv4_hdr *ipv4_hdr;
137 struct ether_hdr *eth_hdr;
139 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
141 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
142 ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
144 return lpm_get_ipv4_dst_port(ipv4_hdr, portid,
145 qconf->ipv4_lookup_struct);
146 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
148 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
149 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
151 return lpm_get_ipv6_dst_port(ipv6_hdr, portid,
152 qconf->ipv6_lookup_struct);
159 * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
160 * precalculated. If packet is ipv6 dst_addr is taken directly from packet
161 * header and dst_ipv4 value is not used.
163 static __rte_always_inline uint16_t
164 lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
165 uint32_t dst_ipv4, uint16_t portid)
168 struct ipv6_hdr *ipv6_hdr;
169 struct ether_hdr *eth_hdr;
171 if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
172 return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
173 dst_ipv4, &next_hop) == 0)
174 ? next_hop : portid);
176 } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
178 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
179 ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
181 return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
182 ipv6_hdr->dst_addr, &next_hop) == 0)
183 ? next_hop : portid);
190 #if defined(RTE_ARCH_X86)
191 #include "l3fwd_lpm_sse.h"
192 #elif defined RTE_MACHINE_CPUFLAG_NEON
193 #include "l3fwd_lpm_neon.h"
195 #include "l3fwd_lpm.h"
198 /* main processing loop */
200 lpm_main_loop(__attribute__((unused)) void *dummy)
202 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
204 uint64_t prev_tsc, diff_tsc, cur_tsc;
208 struct lcore_conf *qconf;
209 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
210 US_PER_S * BURST_TX_DRAIN_US;
214 lcore_id = rte_lcore_id();
215 qconf = &lcore_conf[lcore_id];
217 if (qconf->n_rx_queue == 0) {
218 RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
222 RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
224 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;
229 " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
230 lcore_id, portid, queueid);
233 while (!force_quit) {
235 cur_tsc = rte_rdtsc();
238 * TX burst queue drain
240 diff_tsc = cur_tsc - prev_tsc;
241 if (unlikely(diff_tsc > drain_tsc)) {
243 for (i = 0; i < qconf->n_tx_port; ++i) {
244 portid = qconf->tx_port_id[i];
245 if (qconf->tx_mbufs[portid].len == 0)
248 qconf->tx_mbufs[portid].len,
250 qconf->tx_mbufs[portid].len = 0;
257 * Read packet from RX queues
259 for (i = 0; i < qconf->n_rx_queue; ++i) {
260 portid = qconf->rx_queue_list[i].port_id;
261 queueid = qconf->rx_queue_list[i].queue_id;
262 nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
267 #if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON
268 l3fwd_lpm_send_packets(nb_rx, pkts_burst,
271 l3fwd_lpm_no_opt_send_packets(nb_rx, pkts_burst,
281 setup_lpm(const int socketid)
283 struct rte_lpm6_config config;
284 struct rte_lpm_config config_ipv4;
289 /* create the LPM table */
290 config_ipv4.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
291 config_ipv4.number_tbl8s = IPV4_L3FWD_LPM_NUMBER_TBL8S;
292 config_ipv4.flags = 0;
293 snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
294 ipv4_l3fwd_lpm_lookup_struct[socketid] =
295 rte_lpm_create(s, socketid, &config_ipv4);
296 if (ipv4_l3fwd_lpm_lookup_struct[socketid] == NULL)
297 rte_exit(EXIT_FAILURE,
298 "Unable to create the l3fwd LPM table on socket %d\n",
301 /* populate the LPM table */
302 for (i = 0; i < IPV4_L3FWD_LPM_NUM_ROUTES; i++) {
304 /* skip unused ports */
305 if ((1 << ipv4_l3fwd_lpm_route_array[i].if_out &
306 enabled_port_mask) == 0)
309 ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid],
310 ipv4_l3fwd_lpm_route_array[i].ip,
311 ipv4_l3fwd_lpm_route_array[i].depth,
312 ipv4_l3fwd_lpm_route_array[i].if_out);
315 rte_exit(EXIT_FAILURE,
316 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
320 printf("LPM: Adding route 0x%08x / %d (%d)\n",
321 (unsigned)ipv4_l3fwd_lpm_route_array[i].ip,
322 ipv4_l3fwd_lpm_route_array[i].depth,
323 ipv4_l3fwd_lpm_route_array[i].if_out);
326 /* create the LPM6 table */
327 snprintf(s, sizeof(s), "IPV6_L3FWD_LPM_%d", socketid);
329 config.max_rules = IPV6_L3FWD_LPM_MAX_RULES;
330 config.number_tbl8s = IPV6_L3FWD_LPM_NUMBER_TBL8S;
332 ipv6_l3fwd_lpm_lookup_struct[socketid] = rte_lpm6_create(s, socketid,
334 if (ipv6_l3fwd_lpm_lookup_struct[socketid] == NULL)
335 rte_exit(EXIT_FAILURE,
336 "Unable to create the l3fwd LPM table on socket %d\n",
339 /* populate the LPM table */
340 for (i = 0; i < IPV6_L3FWD_LPM_NUM_ROUTES; i++) {
342 /* skip unused ports */
343 if ((1 << ipv6_l3fwd_lpm_route_array[i].if_out &
344 enabled_port_mask) == 0)
347 ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid],
348 ipv6_l3fwd_lpm_route_array[i].ip,
349 ipv6_l3fwd_lpm_route_array[i].depth,
350 ipv6_l3fwd_lpm_route_array[i].if_out);
353 rte_exit(EXIT_FAILURE,
354 "Unable to add entry %u to the l3fwd LPM table on socket %d\n",
358 printf("LPM: Adding route %s / %d (%d)\n",
360 ipv6_l3fwd_lpm_route_array[i].depth,
361 ipv6_l3fwd_lpm_route_array[i].if_out);
366 lpm_check_ptype(int portid)
369 int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
370 uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
372 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
376 uint32_t ptypes[ret];
378 ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
379 for (i = 0; i < ret; ++i) {
380 if (ptypes[i] & RTE_PTYPE_L3_IPV4)
382 if (ptypes[i] & RTE_PTYPE_L3_IPV6)
386 if (ptype_l3_ipv4 == 0)
387 printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
389 if (ptype_l3_ipv6 == 0)
390 printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
392 if (ptype_l3_ipv4 && ptype_l3_ipv6)
400 lpm_parse_ptype(struct rte_mbuf *m)
402 struct ether_hdr *eth_hdr;
403 uint32_t packet_type = RTE_PTYPE_UNKNOWN;
406 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
407 ether_type = eth_hdr->ether_type;
408 if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
409 packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
410 else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
411 packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
413 m->packet_type = packet_type;
417 lpm_cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
418 struct rte_mbuf *pkts[], uint16_t nb_pkts,
419 uint16_t max_pkts __rte_unused,
420 void *user_param __rte_unused)
424 for (i = 0; i < nb_pkts; ++i)
425 lpm_parse_ptype(pkts[i]);
430 /* Return ipv4/ipv6 lpm fwd lookup struct. */
432 lpm_get_ipv4_l3fwd_lookup_struct(const int socketid)
434 return ipv4_l3fwd_lpm_lookup_struct[socketid];
438 lpm_get_ipv6_l3fwd_lookup_struct(const int socketid)
440 return ipv6_l3fwd_lpm_lookup_struct[socketid];