* Copyright(c) 2021 Intel Corporation
*/
+#include <stdio.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
#include <rte_fib.h>
#include <rte_fib6.h>
#include "l3fwd.h"
+#if defined RTE_ARCH_X86
+#include "l3fwd_sse.h"
+#elif defined __ARM_NEON
+#include "l3fwd_neon.h"
+#elif defined RTE_ARCH_PPC_64
+#include "l3fwd_altivec.h"
+#endif
#include "l3fwd_event.h"
#include "l3fwd_route.h"
+/* Configure how many packets ahead to prefetch for fib. */
+#define FIB_PREFETCH_OFFSET 4
+
+/* A non-existent portid is needed to denote a default hop for fib. */
+#define FIB_DEFAULT_HOP 999
+
+/*
+ * If the machine has SSE, NEON or PPC 64 then multiple packets
+ * can be sent at once if not only single packets will be sent
+ */
+#if defined RTE_ARCH_X86 || defined __ARM_NEON \
+ || defined RTE_ARCH_PPC_64
+#define FIB_SEND_MULTI
+#endif
+
+static struct rte_fib *ipv4_l3fwd_fib_lookup_struct[NB_SOCKETS];
+static struct rte_fib6 *ipv6_l3fwd_fib_lookup_struct[NB_SOCKETS];
+
+/* Parse packet type and ip address. */
+static inline void
+fib_parse_packet(struct rte_mbuf *mbuf,
+ uint32_t *ipv4, uint32_t *ipv4_cnt,
+ uint8_t ipv6[RTE_FIB6_IPV6_ADDR_SIZE],
+ uint32_t *ipv6_cnt, uint8_t *ip_type)
+{
+ struct rte_ether_hdr *eth_hdr;
+ struct rte_ipv4_hdr *ipv4_hdr;
+ struct rte_ipv6_hdr *ipv6_hdr;
+
+ eth_hdr = rte_pktmbuf_mtod(mbuf, struct rte_ether_hdr *);
+ /* IPv4 */
+ if (mbuf->packet_type & RTE_PTYPE_L3_IPV4) {
+ ipv4_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
+ *ipv4 = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
+ /* Store type of packet in type_arr (IPv4=1, IPv6=0). */
+ *ip_type = 1;
+ (*ipv4_cnt)++;
+ }
+ /* IPv6 */
+ else {
+ ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1);
+ rte_mov16(ipv6, (const uint8_t *)ipv6_hdr->dst_addr);
+ *ip_type = 0;
+ (*ipv6_cnt)++;
+ }
+}
+
+/*
+ * If the machine does not have SSE, NEON or PPC 64 then the packets
+ * are sent one at a time using send_single_packet()
+ */
+#if !defined FIB_SEND_MULTI
+static inline void
+fib_send_single(int nb_tx, struct lcore_conf *qconf,
+ struct rte_mbuf **pkts_burst, uint16_t hops[nb_tx])
+{
+ int32_t j;
+ struct rte_ether_hdr *eth_hdr;
+
+ for (j = 0; j < nb_tx; j++) {
+ /* Run rfc1812 if packet is ipv4 and checks enabled. */
+#if defined DO_RFC_1812_CHECKS
+ rfc1812_process((struct rte_ipv4_hdr *)(rte_pktmbuf_mtod(
+ pkts_burst[j], struct rte_ether_hdr *) + 1),
+ &hops[j], pkts_burst[j]->packet_type);
+#endif
+
+ /* Set MAC addresses. */
+ eth_hdr = rte_pktmbuf_mtod(pkts_burst[j],
+ struct rte_ether_hdr *);
+ *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[hops[j]];
+ rte_ether_addr_copy(&ports_eth_addr[hops[j]],
+ ð_hdr->s_addr);
+
+ /* Send single packet. */
+ send_single_packet(qconf, pkts_burst[j], hops[j]);
+ }
+}
+#endif
+
+/* Bulk parse, fib lookup and send. */
+static inline void
+fib_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
+ uint16_t portid, struct lcore_conf *qconf)
+{
+ uint32_t ipv4_arr[nb_rx];
+ uint8_t ipv6_arr[nb_rx][RTE_FIB6_IPV6_ADDR_SIZE];
+ uint16_t hops[nb_rx];
+ uint64_t hopsv4[nb_rx], hopsv6[nb_rx];
+ uint8_t type_arr[nb_rx];
+ uint32_t ipv4_cnt = 0, ipv6_cnt = 0;
+ uint32_t ipv4_arr_assem = 0, ipv6_arr_assem = 0;
+ uint16_t nh;
+ int32_t i;
+
+ /* Prefetch first packets. */
+ for (i = 0; i < FIB_PREFETCH_OFFSET && i < nb_rx; i++)
+ rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i], void *));
+
+ /* Parse packet info and prefetch. */
+ for (i = 0; i < (nb_rx - FIB_PREFETCH_OFFSET); i++) {
+ /* Prefetch packet. */
+ rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
+ i + FIB_PREFETCH_OFFSET], void *));
+ fib_parse_packet(pkts_burst[i],
+ &ipv4_arr[ipv4_cnt], &ipv4_cnt,
+ ipv6_arr[ipv6_cnt], &ipv6_cnt,
+ &type_arr[i]);
+ }
+
+ /* Parse remaining packet info. */
+ for (; i < nb_rx; i++)
+ fib_parse_packet(pkts_burst[i],
+ &ipv4_arr[ipv4_cnt], &ipv4_cnt,
+ ipv6_arr[ipv6_cnt], &ipv6_cnt,
+ &type_arr[i]);
+
+ /* Lookup IPv4 hops if IPv4 packets are present. */
+ if (likely(ipv4_cnt > 0))
+ rte_fib_lookup_bulk(qconf->ipv4_lookup_struct,
+ ipv4_arr, hopsv4, ipv4_cnt);
+
+ /* Lookup IPv6 hops if IPv6 packets are present. */
+ if (ipv6_cnt > 0)
+ rte_fib6_lookup_bulk(qconf->ipv6_lookup_struct,
+ ipv6_arr, hopsv6, ipv6_cnt);
+
+ /* Add IPv4 and IPv6 hops to one array depending on type. */
+ for (i = 0; i < nb_rx; i++) {
+ if (type_arr[i])
+ nh = (uint16_t)hopsv4[ipv4_arr_assem++];
+ else
+ nh = (uint16_t)hopsv6[ipv6_arr_assem++];
+ hops[i] = nh != FIB_DEFAULT_HOP ? nh : portid;
+ }
+
+#if defined FIB_SEND_MULTI
+ send_packets_multi(qconf, pkts_burst, hops, nb_rx);
+#else
+ fib_send_single(nb_rx, qconf, pkts_burst, hops);
+#endif
+}
+
/* Main fib processing loop. */
int
fib_main_loop(__rte_unused void *dummy)
{
+ struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+ unsigned int lcore_id;
+ uint64_t prev_tsc, diff_tsc, cur_tsc;
+ int i, nb_rx;
+ uint16_t portid;
+ uint8_t queueid;
+ struct lcore_conf *qconf;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
+ US_PER_S * BURST_TX_DRAIN_US;
+
+ prev_tsc = 0;
+
+ lcore_id = rte_lcore_id();
+ qconf = &lcore_conf[lcore_id];
+
+ if (qconf->n_rx_queue == 0) {
+ RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
+ return 0;
+ }
+
+ RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
+
+ for (i = 0; i < qconf->n_rx_queue; i++) {
+
+ portid = qconf->rx_queue_list[i].port_id;
+ queueid = qconf->rx_queue_list[i].queue_id;
+ RTE_LOG(INFO, L3FWD,
+ " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
+ lcore_id, portid, queueid);
+ }
+
+ while (!force_quit) {
+
+ cur_tsc = rte_rdtsc();
+
+ /* TX burst queue drain. */
+ diff_tsc = cur_tsc - prev_tsc;
+ if (unlikely(diff_tsc > drain_tsc)) {
+
+ for (i = 0; i < qconf->n_tx_port; ++i) {
+ portid = qconf->tx_port_id[i];
+ if (qconf->tx_mbufs[portid].len == 0)
+ continue;
+ send_burst(qconf,
+ qconf->tx_mbufs[portid].len,
+ portid);
+ qconf->tx_mbufs[portid].len = 0;
+ }
+
+ prev_tsc = cur_tsc;
+ }
+
+ /* Read packet from RX queues. */
+ for (i = 0; i < qconf->n_rx_queue; ++i) {
+ portid = qconf->rx_queue_list[i].port_id;
+ queueid = qconf->rx_queue_list[i].queue_id;
+ nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
+ MAX_PKT_BURST);
+ if (nb_rx == 0)
+ continue;
+
+ /* Use fib to lookup port IDs and transmit them. */
+ fib_send_packets(nb_rx, pkts_burst, portid, qconf);
+ }
+ }
+
return 0;
}
+/* One eventdev loop for single and burst using fib. */
+static __rte_always_inline void
+fib_event_loop(struct l3fwd_event_resources *evt_rsrc,
+ const uint8_t flags)
+{
+ const int event_p_id = l3fwd_get_free_event_port(evt_rsrc);
+ const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
+ evt_rsrc->evq.nb_queues - 1];
+ const uint8_t event_d_id = evt_rsrc->event_d_id;
+ const uint16_t deq_len = evt_rsrc->deq_depth;
+ struct rte_event events[MAX_PKT_BURST];
+ struct lcore_conf *lconf;
+ unsigned int lcore_id;
+ int nb_enq, nb_deq, i;
+
+ uint32_t ipv4_arr[MAX_PKT_BURST];
+ uint8_t ipv6_arr[MAX_PKT_BURST][RTE_FIB6_IPV6_ADDR_SIZE];
+ uint64_t hopsv4[MAX_PKT_BURST], hopsv6[MAX_PKT_BURST];
+ uint16_t nh;
+ uint8_t type_arr[MAX_PKT_BURST];
+ uint32_t ipv4_cnt, ipv6_cnt;
+ uint32_t ipv4_arr_assem, ipv6_arr_assem;
+
+ if (event_p_id < 0)
+ return;
+
+ lcore_id = rte_lcore_id();
+
+ lconf = &lcore_conf[lcore_id];
+
+ RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id);
+
+ while (!force_quit) {
+ /* Read events from RX queues. */
+ nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id,
+ events, deq_len, 0);
+ if (nb_deq == 0) {
+ rte_pause();
+ continue;
+ }
+
+ /* Reset counters. */
+ ipv4_cnt = 0;
+ ipv6_cnt = 0;
+ ipv4_arr_assem = 0;
+ ipv6_arr_assem = 0;
+
+ /* Prefetch first packets. */
+ for (i = 0; i < FIB_PREFETCH_OFFSET && i < nb_deq; i++)
+ rte_prefetch0(rte_pktmbuf_mtod(events[i].mbuf, void *));
+
+ /* Parse packet info and prefetch. */
+ for (i = 0; i < (nb_deq - FIB_PREFETCH_OFFSET); i++) {
+ if (flags & L3FWD_EVENT_TX_ENQ) {
+ events[i].queue_id = tx_q_id;
+ events[i].op = RTE_EVENT_OP_FORWARD;
+ }
+
+ if (flags & L3FWD_EVENT_TX_DIRECT)
+ rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
+ 0);
+
+ /* Prefetch packet. */
+ rte_prefetch0(rte_pktmbuf_mtod(events[
+ i + FIB_PREFETCH_OFFSET].mbuf,
+ void *));
+
+ fib_parse_packet(events[i].mbuf,
+ &ipv4_arr[ipv4_cnt], &ipv4_cnt,
+ ipv6_arr[ipv6_cnt], &ipv6_cnt,
+ &type_arr[i]);
+ }
+
+ /* Parse remaining packet info. */
+ for (; i < nb_deq; i++) {
+ if (flags & L3FWD_EVENT_TX_ENQ) {
+ events[i].queue_id = tx_q_id;
+ events[i].op = RTE_EVENT_OP_FORWARD;
+ }
+
+ if (flags & L3FWD_EVENT_TX_DIRECT)
+ rte_event_eth_tx_adapter_txq_set(events[i].mbuf,
+ 0);
+
+ fib_parse_packet(events[i].mbuf,
+ &ipv4_arr[ipv4_cnt], &ipv4_cnt,
+ ipv6_arr[ipv6_cnt], &ipv6_cnt,
+ &type_arr[i]);
+ }
+
+ /* Lookup IPv4 hops if IPv4 packets are present. */
+ if (likely(ipv4_cnt > 0))
+ rte_fib_lookup_bulk(lconf->ipv4_lookup_struct,
+ ipv4_arr, hopsv4, ipv4_cnt);
+
+ /* Lookup IPv6 hops if IPv6 packets are present. */
+ if (ipv6_cnt > 0)
+ rte_fib6_lookup_bulk(lconf->ipv6_lookup_struct,
+ ipv6_arr, hopsv6, ipv6_cnt);
+
+ /* Assign ports looked up in fib depending on IPv4 or IPv6 */
+ for (i = 0; i < nb_deq; i++) {
+ if (type_arr[i])
+ nh = (uint16_t)hopsv4[ipv4_arr_assem++];
+ else
+ nh = (uint16_t)hopsv6[ipv6_arr_assem++];
+ if (nh != FIB_DEFAULT_HOP)
+ events[i].mbuf->port = nh;
+ }
+
+ if (flags & L3FWD_EVENT_TX_ENQ) {
+ nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id,
+ events, nb_deq);
+ while (nb_enq < nb_deq && !force_quit)
+ nb_enq += rte_event_enqueue_burst(event_d_id,
+ event_p_id, events + nb_enq,
+ nb_deq - nb_enq);
+ }
+
+ if (flags & L3FWD_EVENT_TX_DIRECT) {
+ nb_enq = rte_event_eth_tx_adapter_enqueue(event_d_id,
+ event_p_id, events, nb_deq, 0);
+ while (nb_enq < nb_deq && !force_quit)
+ nb_enq += rte_event_eth_tx_adapter_enqueue(
+ event_d_id, event_p_id,
+ events + nb_enq,
+ nb_deq - nb_enq, 0);
+ }
+ }
+}
+
int __rte_noinline
fib_event_main_loop_tx_d(__rte_unused void *dummy)
{
+ struct l3fwd_event_resources *evt_rsrc =
+ l3fwd_get_eventdev_rsrc();
+
+ fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT);
return 0;
}
int __rte_noinline
fib_event_main_loop_tx_d_burst(__rte_unused void *dummy)
{
+ struct l3fwd_event_resources *evt_rsrc =
+ l3fwd_get_eventdev_rsrc();
+
+ fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT);
return 0;
}
int __rte_noinline
fib_event_main_loop_tx_q(__rte_unused void *dummy)
{
+ struct l3fwd_event_resources *evt_rsrc =
+ l3fwd_get_eventdev_rsrc();
+
+ fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ);
return 0;
}
int __rte_noinline
fib_event_main_loop_tx_q_burst(__rte_unused void *dummy)
{
+ struct l3fwd_event_resources *evt_rsrc =
+ l3fwd_get_eventdev_rsrc();
+
+ fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ);
return 0;
}
/* Function to setup fib. */
void
-setup_fib(__rte_unused const int socketid)
-{}
+setup_fib(const int socketid)
+{
+ struct rte_fib6_conf config;
+ struct rte_fib_conf config_ipv4;
+ unsigned int i;
+ int ret;
+ char s[64];
+ char abuf[INET6_ADDRSTRLEN];
+
+ /* Create the fib IPv4 table. */
+ config_ipv4.type = RTE_FIB_DIR24_8;
+ config_ipv4.max_routes = (1 << 16);
+ config_ipv4.default_nh = FIB_DEFAULT_HOP;
+ config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B;
+ config_ipv4.dir24_8.num_tbl8 = (1 << 15);
+ snprintf(s, sizeof(s), "IPV4_L3FWD_FIB_%d", socketid);
+ ipv4_l3fwd_fib_lookup_struct[socketid] =
+ rte_fib_create(s, socketid, &config_ipv4);
+ if (ipv4_l3fwd_fib_lookup_struct[socketid] == NULL)
+ rte_exit(EXIT_FAILURE,
+ "Unable to create the l3fwd FIB table on socket %d\n",
+ socketid);
+
+ /* Populate the fib ipv4 table. */
+ for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
+ struct in_addr in;
+
+ /* Skip unused ports. */
+ if ((1 << ipv4_l3fwd_route_array[i].if_out &
+ enabled_port_mask) == 0)
+ continue;
+
+ ret = rte_fib_add(ipv4_l3fwd_fib_lookup_struct[socketid],
+ ipv4_l3fwd_route_array[i].ip,
+ ipv4_l3fwd_route_array[i].depth,
+ ipv4_l3fwd_route_array[i].if_out);
+
+ if (ret < 0) {
+ rte_exit(EXIT_FAILURE,
+ "Unable to add entry %u to the l3fwd FIB table on socket %d\n",
+ i, socketid);
+ }
+
+ in.s_addr = htonl(ipv4_l3fwd_route_array[i].ip);
+ if (inet_ntop(AF_INET, &in, abuf, sizeof(abuf)) != NULL) {
+ printf("FIB: Adding route %s / %d (%d)\n",
+ abuf,
+ ipv4_l3fwd_route_array[i].depth,
+ ipv4_l3fwd_route_array[i].if_out);
+ } else {
+ printf("FIB: IPv4 route added to port %d\n",
+ ipv4_l3fwd_route_array[i].if_out);
+ }
+ }
+
+ /* Create the fib IPv6 table. */
+ snprintf(s, sizeof(s), "IPV6_L3FWD_FIB_%d", socketid);
+
+ config.type = RTE_FIB6_TRIE;
+ config.max_routes = (1 << 16) - 1;
+ config.default_nh = FIB_DEFAULT_HOP;
+ config.trie.nh_sz = RTE_FIB6_TRIE_4B;
+ config.trie.num_tbl8 = (1 << 15);
+ ipv6_l3fwd_fib_lookup_struct[socketid] = rte_fib6_create(s, socketid,
+ &config);
+ if (ipv6_l3fwd_fib_lookup_struct[socketid] == NULL)
+ rte_exit(EXIT_FAILURE,
+ "Unable to create the l3fwd FIB table on socket %d\n",
+ socketid);
+
+ /* Populate the fib IPv6 table. */
+ for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
+
+ /* Skip unused ports. */
+ if ((1 << ipv6_l3fwd_route_array[i].if_out &
+ enabled_port_mask) == 0)
+ continue;
+
+ ret = rte_fib6_add(ipv6_l3fwd_fib_lookup_struct[socketid],
+ ipv6_l3fwd_route_array[i].ip,
+ ipv6_l3fwd_route_array[i].depth,
+ ipv6_l3fwd_route_array[i].if_out);
+
+ if (ret < 0) {
+ rte_exit(EXIT_FAILURE,
+ "Unable to add entry %u to the l3fwd FIB table on socket %d\n",
+ i, socketid);
+ }
+
+ if (inet_ntop(AF_INET6, ipv6_l3fwd_route_array[i].ip,
+ abuf, sizeof(abuf)) != NULL) {
+ printf("FIB: Adding route %s / %d (%d)\n",
+ abuf,
+ ipv6_l3fwd_route_array[i].depth,
+ ipv6_l3fwd_route_array[i].if_out);
+ } else {
+ printf("FIB: IPv6 route added to port %d\n",
+ ipv6_l3fwd_route_array[i].if_out);
+ }
+ }
+}
/* Return ipv4 fib lookup struct. */
void *
-fib_get_ipv4_l3fwd_lookup_struct(__rte_unused const int socketid)
+fib_get_ipv4_l3fwd_lookup_struct(const int socketid)
{
- return 0;
+ return ipv4_l3fwd_fib_lookup_struct[socketid];
}
/* Return ipv6 fib lookup struct. */
void *
-fib_get_ipv6_l3fwd_lookup_struct(__rte_unused const int socketid)
+fib_get_ipv6_l3fwd_lookup_struct(const int socketid)
{
- return 0;
+ return ipv6_l3fwd_fib_lookup_struct[socketid];
}
git.droids-corp.org / dpdk.git / blobdiff