--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdint.h>
+#include <sched.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <netinet/in.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+#include <getopt.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_spinlock.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_random.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_malloc.h>
+
+#include "flib.h"
+
+#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
+#define MBUF_NAME "mbuf_pool_%d"
+#define MBUF_SIZE \
+(RTE_MBUF_DEFAULT_DATAROOM + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
+#define NB_MBUF 8192
+#define RING_MASTER_NAME "l2fwd_ring_m2s_"
+#define RING_SLAVE_NAME "l2fwd_ring_s2m_"
+#define MAX_NAME_LEN 32
+/* RECREATE flag indicate needs initialize resource and launch slave_core again */
+#define SLAVE_RECREATE_FLAG 0x1
+/* RESTART flag indicate needs restart port and send START command again */
+#define SLAVE_RESTART_FLAG 0x2
+#define INVALID_MAPPING_ID ((unsigned)LCORE_ID_ANY)
+/* Maximum message buffer per slave */
+#define NB_CORE_MSGBUF 32
+enum l2fwd_cmd{
+ CMD_START,
+ CMD_STOP,
+};
+
+#define MAX_PKT_BURST 32
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
+
+/*
+ * Configurable number of RX/TX ring descriptors
+ */
+#define RTE_TEST_RX_DESC_DEFAULT 128
+#define RTE_TEST_TX_DESC_DEFAULT 512
+static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
+static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+
+/* ethernet addresses of ports */
+static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
+
+/* mask of enabled ports */
+static uint32_t l2fwd_enabled_port_mask = 0;
+
+/* list of enabled ports */
+static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
+
+static unsigned int l2fwd_rx_queue_per_lcore = 1;
+
+struct mbuf_table {
+ unsigned len;
+ struct rte_mbuf *m_table[MAX_PKT_BURST];
+};
+
+#define MAX_RX_QUEUE_PER_LCORE 16
+#define MAX_TX_QUEUE_PER_PORT 16
+struct lcore_queue_conf {
+ unsigned n_rx_port;
+ unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
+} __rte_cache_aligned;
+struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
+
+struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
+
+struct lcore_resource_struct {
+ int enabled; /* Only set in case this lcore involved into packet forwarding */
+ int flags; /* Set only slave need to restart or recreate */
+ unsigned lcore_id; /* lcore ID */
+ unsigned pair_id; /* dependency lcore ID on port */
+ char ring_name[2][MAX_NAME_LEN];
+ /* ring[0] for master send cmd, slave read */
+ /* ring[1] for slave send ack, master read */
+ struct rte_ring *ring[2];
+ int port_num; /* Total port numbers */
+ uint8_t port[RTE_MAX_ETHPORTS]; /* Port id for that lcore to receive packets */
+}__attribute__((packed)) __rte_cache_aligned;
+
+static struct lcore_resource_struct lcore_resource[RTE_MAX_LCORE];
+static struct rte_mempool *message_pool;
+static rte_spinlock_t res_lock = RTE_SPINLOCK_INITIALIZER;
+/* use floating processes */
+static int float_proc = 0;
+/* Save original cpu affinity */
+struct cpu_aff_arg{
+ cpu_set_t set;
+ size_t size;
+}cpu_aff;
+
+static const struct rte_eth_conf port_conf = {
+ .rxmode = {
+ .split_hdr_size = 0,
+ .header_split = 0, /**< Header Split disabled */
+ .hw_ip_checksum = 0, /**< IP checksum offload disabled */
+ .hw_vlan_filter = 0, /**< VLAN filtering disabled */
+ .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
+ .hw_strip_crc = 0, /**< CRC stripped by hardware */
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+};
+
+static struct rte_mempool * l2fwd_pktmbuf_pool[RTE_MAX_ETHPORTS];
+
+/* Per-port statistics struct */
+struct l2fwd_port_statistics {
+ uint64_t tx;
+ uint64_t rx;
+ uint64_t dropped;
+} __rte_cache_aligned;
+struct l2fwd_port_statistics *port_statistics;
+/**
+ * pointer to lcore ID mapping array, used to return lcore id in case slave
+ * process exited unexpectedly, use only floating process option applied
+ **/
+unsigned *mapping_id;
+
+/* A tsc-based timer responsible for triggering statistics printout */
+#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
+#define MAX_TIMER_PERIOD 86400 /* 1 day max */
+static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
+
+static int l2fwd_launch_one_lcore(void *dummy);
+
+/* Print out statistics on packets dropped */
+static void
+print_stats(void)
+{
+ uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
+ unsigned portid;
+
+ total_packets_dropped = 0;
+ total_packets_tx = 0;
+ total_packets_rx = 0;
+
+ const char clr[] = { 27, '[', '2', 'J', '\0' };
+ const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
+
+ /* Clear screen and move to top left */
+ printf("%s%s", clr, topLeft);
+
+ printf("\nPort statistics ====================================");
+
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ /* skip disabled ports */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+ printf("\nStatistics for port %u ------------------------------"
+ "\nPackets sent: %24"PRIu64
+ "\nPackets received: %20"PRIu64
+ "\nPackets dropped: %21"PRIu64,
+ portid,
+ port_statistics[portid].tx,
+ port_statistics[portid].rx,
+ port_statistics[portid].dropped);
+
+ total_packets_dropped += port_statistics[portid].dropped;
+ total_packets_tx += port_statistics[portid].tx;
+ total_packets_rx += port_statistics[portid].rx;
+ }
+ printf("\nAggregate statistics ==============================="
+ "\nTotal packets sent: %18"PRIu64
+ "\nTotal packets received: %14"PRIu64
+ "\nTotal packets dropped: %15"PRIu64,
+ total_packets_tx,
+ total_packets_rx,
+ total_packets_dropped);
+ printf("\n====================================================\n");
+}
+
+static int
+clear_cpu_affinity(void)
+{
+ int s;
+
+ s = sched_setaffinity(0, cpu_aff.size, &cpu_aff.set);
+ if (s != 0) {
+ printf("sched_setaffinity failed:%s\n", strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+get_cpu_affinity(void)
+{
+ int s;
+
+ cpu_aff.size = sizeof(cpu_set_t);
+ CPU_ZERO(&cpu_aff.set);
+
+ s = sched_getaffinity(0, cpu_aff.size, &cpu_aff.set);
+ if (s != 0) {
+ printf("sched_getaffinity failed:%s\n", strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+/**
+ * This fnciton demonstrates the approach to create ring in first instance
+ * or re-attach an existed ring in later instance.
+ **/
+static struct rte_ring *
+create_ring(const char *name, unsigned count,
+ int socket_id,unsigned flags)
+{
+ struct rte_ring *ring;
+
+ if (name == NULL)
+ return NULL;
+
+ /* If already create, just attached it */
+ if (likely((ring = rte_ring_lookup(name)) != NULL))
+ return ring;
+
+ /* First call it, create one */
+ return rte_ring_create(name, count, socket_id, flags);
+}
+
+/* Malloc with rte_malloc on structures that shared by master and slave */
+static int
+l2fwd_malloc_shared_struct(void)
+{
+ port_statistics = rte_zmalloc("port_stat",
+ sizeof(struct l2fwd_port_statistics) * RTE_MAX_ETHPORTS,
+ 0);
+ if (port_statistics == NULL)
+ return -1;
+
+ /* allocate mapping_id array */
+ if (float_proc) {
+ int i;
+ mapping_id = rte_malloc("mapping_id", sizeof(unsigned) * RTE_MAX_LCORE,
+ 0);
+
+ if (mapping_id == NULL)
+ return -1;
+
+ for (i = 0 ;i < RTE_MAX_LCORE; i++)
+ mapping_id[i] = INVALID_MAPPING_ID;
+ }
+ return 0;
+}
+
+/* Create ring which used for communicate among master and slave */
+static int
+create_ms_ring(unsigned slaveid)
+{
+ unsigned flag = RING_F_SP_ENQ | RING_F_SC_DEQ;
+ struct lcore_resource_struct *res = &lcore_resource[slaveid];
+ unsigned socketid = rte_socket_id();
+
+ /* Always assume create ring on master socket_id */
+ /* Default only create a ring size 32 */
+ snprintf(res->ring_name[0], MAX_NAME_LEN, "%s%u",
+ RING_MASTER_NAME, slaveid);
+ if ((res->ring[0] = create_ring(res->ring_name[0], NB_CORE_MSGBUF,
+ socketid, flag)) == NULL) {
+ printf("Create m2s ring %s failed\n", res->ring_name[0]);
+ return -1;
+ }
+
+ snprintf(res->ring_name[1], MAX_NAME_LEN, "%s%u",
+ RING_SLAVE_NAME, slaveid);
+ if ((res->ring[1] = create_ring(res->ring_name[1], NB_CORE_MSGBUF,
+ socketid, flag)) == NULL) {
+ printf("Create s2m ring %s failed\n", res->ring_name[1]);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* send command to pair in paired master and slave ring */
+static inline int
+sendcmd(unsigned slaveid, enum l2fwd_cmd cmd, int is_master)
+{
+ struct lcore_resource_struct *res = &lcore_resource[slaveid];
+ void *msg;
+ int fd = !is_master;
+
+ /* Only check master, it must be enabled and running if it is slave */
+ if (is_master && !res->enabled)
+ return -1;
+
+ if (res->ring[fd] == NULL)
+ return -1;
+
+ if (rte_mempool_get(message_pool, &msg) < 0) {
+ printf("Error to get message buffer\n");
+ return -1;
+ }
+
+ *(enum l2fwd_cmd *)msg = cmd;
+
+ if (rte_ring_enqueue(res->ring[fd], msg) != 0) {
+ printf("Enqueue error\n");
+ rte_mempool_put(message_pool, msg);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Get command from pair in paired master and slave ring */
+static inline int
+getcmd(unsigned slaveid, enum l2fwd_cmd *cmd, int is_master)
+{
+ struct lcore_resource_struct *res = &lcore_resource[slaveid];
+ void *msg;
+ int fd = !!is_master;
+ int ret;
+ /* Only check master, it must be enabled and running if it is slave */
+ if (is_master && (!res->enabled))
+ return -1;
+
+ if (res->ring[fd] == NULL)
+ return -1;
+
+ ret = rte_ring_dequeue(res->ring[fd], &msg);
+
+ if (ret == 0) {
+ *cmd = *(enum l2fwd_cmd *)msg;
+ rte_mempool_put(message_pool, msg);
+ }
+ return ret;
+}
+
+/* Master send command to slave and wait until ack received or error met */
+static int
+master_sendcmd_with_ack(unsigned slaveid, enum l2fwd_cmd cmd)
+{
+ enum l2fwd_cmd ack_cmd;
+ int ret = -1;
+
+ if (sendcmd(slaveid, cmd, 1) != 0)
+ rte_exit(EXIT_FAILURE, "Failed to send message\n");
+
+ /* Get ack */
+ while (1) {
+ ret = getcmd(slaveid, &ack_cmd, 1);
+ if (ret == 0 && cmd == ack_cmd)
+ break;
+
+ /* If slave not running yet, return an error */
+ if (flib_query_slave_status(slaveid) != ST_RUN) {
+ ret = -ENOENT;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+/* restart all port that assigned to that slave lcore */
+static int
+reset_slave_all_ports(unsigned slaveid)
+{
+ struct lcore_resource_struct *slave = &lcore_resource[slaveid];
+ int i, ret = 0;
+
+ /* stop/start port */
+ for (i = 0; i < slave->port_num; i++) {
+ char buf_name[RTE_MEMPOOL_NAMESIZE];
+ struct rte_mempool *pool;
+ printf("Stop port :%d\n", slave->port[i]);
+ rte_eth_dev_stop(slave->port[i]);
+ snprintf(buf_name, RTE_MEMPOOL_NAMESIZE, MBUF_NAME, slave->port[i]);
+ pool = rte_mempool_lookup(buf_name);
+ if (pool)
+ printf("Port %d mempool free object is %u(%u)\n", slave->port[i],
+ rte_mempool_count(pool), (unsigned)NB_MBUF);
+ else
+ printf("Can't find mempool %s\n", buf_name);
+
+ printf("Start port :%d\n", slave->port[i]);
+ ret = rte_eth_dev_start(slave->port[i]);
+ if (ret != 0)
+ break;
+ }
+ return ret;
+}
+
+static int
+reset_shared_structures(unsigned slaveid)
+{
+ int ret;
+ /* Only port are shared resource here */
+ ret = reset_slave_all_ports(slaveid);
+
+ return ret;
+}
+
+/**
+ * Call this function to re-create resource that needed for slave process that
+ * exited in last instance
+ **/
+static int
+init_slave_res(unsigned slaveid)
+{
+ struct lcore_resource_struct *slave = &lcore_resource[slaveid];
+ enum l2fwd_cmd cmd;
+
+ if (!slave->enabled) {
+ printf("Something wrong with lcore=%u enabled=%d\n",slaveid,
+ slave->enabled);
+ return -1;
+ }
+
+ /* Initialize ring */
+ if (create_ms_ring(slaveid) != 0)
+ rte_exit(EXIT_FAILURE, "failed to create ring for slave %u\n",
+ slaveid);
+
+ /* drain un-read buffer if have */
+ while (getcmd(slaveid, &cmd, 1) == 0);
+ while (getcmd(slaveid, &cmd, 0) == 0);
+
+ return 0;
+}
+
+static int
+recreate_one_slave(unsigned slaveid)
+{
+ int ret = 0;
+ /* Re-initialize resource for stalled slave */
+ if ((ret = init_slave_res(slaveid)) != 0) {
+ printf("Init slave=%u failed\n", slaveid);
+ return ret;
+ }
+
+ if ((ret = flib_remote_launch(l2fwd_launch_one_lcore, NULL, slaveid))
+ != 0)
+ printf("Launch slave %u failed\n", slaveid);
+
+ return ret;
+}
+
+/**
+ * remapping resource belong to slave_id to new lcore that gets from flib_assign_lcore_id(),
+ * used only floating process option applied.
+ *
+ * @param slaveid
+ * original lcore_id that apply for remapping
+ */
+static void
+remapping_slave_resource(unsigned slaveid, unsigned map_id)
+{
+
+ /* remapping lcore_resource */
+ memcpy(&lcore_resource[map_id], &lcore_resource[slaveid],
+ sizeof(struct lcore_resource_struct));
+
+ /* remapping lcore_queue_conf */
+ memcpy(&lcore_queue_conf[map_id], &lcore_queue_conf[slaveid],
+ sizeof(struct lcore_queue_conf));
+}
+
+static int
+reset_pair(unsigned slaveid, unsigned pairid)
+{
+ int ret;
+ if ((ret = reset_shared_structures(slaveid)) != 0)
+ goto back;
+
+ if((ret = reset_shared_structures(pairid)) != 0)
+ goto back;
+
+ if (float_proc) {
+ unsigned map_id = mapping_id[slaveid];
+
+ if (map_id != INVALID_MAPPING_ID) {
+ printf("%u return mapping id %u\n", slaveid, map_id);
+ flib_free_lcore_id(map_id);
+ mapping_id[slaveid] = INVALID_MAPPING_ID;
+ }
+
+ map_id = mapping_id[pairid];
+ if (map_id != INVALID_MAPPING_ID) {
+ printf("%u return mapping id %u\n", pairid, map_id);
+ flib_free_lcore_id(map_id);
+ mapping_id[pairid] = INVALID_MAPPING_ID;
+ }
+ }
+
+ if((ret = recreate_one_slave(slaveid)) != 0)
+ goto back;
+
+ ret = recreate_one_slave(pairid);
+
+back:
+ return ret;
+}
+
+static void
+slave_exit_cb(unsigned slaveid, __attribute__((unused))int stat)
+{
+ struct lcore_resource_struct *slave = &lcore_resource[slaveid];
+
+ printf("Get slave %u leave info\n", slaveid);
+ if (!slave->enabled) {
+ printf("Lcore=%u not registered for it's exit\n", slaveid);
+ return;
+ }
+ rte_spinlock_lock(&res_lock);
+
+ /* Change the state and wait master to start them */
+ slave->flags = SLAVE_RECREATE_FLAG;
+
+ rte_spinlock_unlock(&res_lock);
+}
+
+static void
+l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
+{
+ struct ether_hdr *eth;
+ void *tmp;
+ unsigned dst_port;
+ int sent;
+ struct rte_eth_dev_tx_buffer *buffer;
+
+ dst_port = l2fwd_dst_ports[portid];
+ eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ /* 02:00:00:00:00:xx */
+ tmp = ð->d_addr.addr_bytes[0];
+ *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
+
+ /* src addr */
+ ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
+
+ buffer = tx_buffer[dst_port];
+ sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
+ if (sent)
+ port_statistics[dst_port].tx += sent;
+}
+
+/* main processing loop */
+static void
+l2fwd_main_loop(void)
+{
+ struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+ struct rte_mbuf *m;
+ int sent;
+ unsigned lcore_id;
+ uint64_t prev_tsc, diff_tsc, cur_tsc;
+ unsigned i, j, portid, nb_rx;
+ struct lcore_queue_conf *qconf;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
+ BURST_TX_DRAIN_US;
+ struct rte_eth_dev_tx_buffer *buffer;
+
+ prev_tsc = 0;
+
+ lcore_id = rte_lcore_id();
+
+ qconf = &lcore_queue_conf[lcore_id];
+
+ if (qconf->n_rx_port == 0) {
+ RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
+ return;
+ }
+
+ RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
+
+ for (i = 0; i < qconf->n_rx_port; i++) {
+ portid = qconf->rx_port_list[i];
+ RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
+ portid);
+ }
+
+ while (1) {
+ enum l2fwd_cmd cmd;
+ cur_tsc = rte_rdtsc();
+
+ if (unlikely(getcmd(lcore_id, &cmd, 0) == 0)) {
+ sendcmd(lcore_id, cmd, 0);
+
+ /* If get stop command, stop forwarding and exit */
+ if (cmd == CMD_STOP) {
+ return;
+ }
+ }
+
+ /*
+ * TX burst queue drain
+ */
+ diff_tsc = cur_tsc - prev_tsc;
+ if (unlikely(diff_tsc > drain_tsc)) {
+
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
+ buffer = tx_buffer[portid];
+
+ sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
+ if (sent)
+ port_statistics[portid].tx += sent;
+
+ }
+ }
+
+ /*
+ * Read packet from RX queues
+ */
+ for (i = 0; i < qconf->n_rx_port; i++) {
+
+ portid = qconf->rx_port_list[i];
+ nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
+ pkts_burst, MAX_PKT_BURST);
+
+ port_statistics[portid].rx += nb_rx;
+
+ for (j = 0; j < nb_rx; j++) {
+ m = pkts_burst[j];
+ rte_prefetch0(rte_pktmbuf_mtod(m, void *));
+ l2fwd_simple_forward(m, portid);
+ }
+ }
+ }
+}
+
+static int
+l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
+{
+ unsigned lcore_id = rte_lcore_id();
+
+ if (float_proc) {
+ unsigned flcore_id;
+
+ /* Change it to floating process, also change it's lcore_id */
+ clear_cpu_affinity();
+ RTE_PER_LCORE(_lcore_id) = 0;
+ /* Get a lcore_id */
+ if (flib_assign_lcore_id() < 0 ) {
+ printf("flib_assign_lcore_id failed\n");
+ return -1;
+ }
+ flcore_id = rte_lcore_id();
+ /* Set mapping id, so master can return it after slave exited */
+ mapping_id[lcore_id] = flcore_id;
+ printf("Org lcore_id = %u, cur lcore_id = %u\n",
+ lcore_id, flcore_id);
+ remapping_slave_resource(lcore_id, flcore_id);
+ }
+
+ l2fwd_main_loop();
+
+ /* return lcore_id before return */
+ if (float_proc) {
+ flib_free_lcore_id(rte_lcore_id());
+ mapping_id[lcore_id] = INVALID_MAPPING_ID;
+ }
+ return 0;
+}
+
+/* display usage */
+static void
+l2fwd_usage(const char *prgname)
+{
+ printf("%s [EAL options] -- -p PORTMASK -s COREMASK [-q NQ] -f\n"
+ " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
+ " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
+ " -f use floating process which won't bind to any core to run\n"
+ " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
+ prgname);
+}
+
+static int
+l2fwd_parse_portmask(const char *portmask)
+{
+ char *end = NULL;
+ unsigned long pm;
+
+ /* parse hexadecimal string */
+ pm = strtoul(portmask, &end, 16);
+ if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+
+ if (pm == 0)
+ return -1;
+
+ return pm;
+}
+
+static unsigned int
+l2fwd_parse_nqueue(const char *q_arg)
+{
+ char *end = NULL;
+ unsigned long n;
+
+ /* parse hexadecimal string */
+ n = strtoul(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return 0;
+ if (n == 0)
+ return 0;
+ if (n >= MAX_RX_QUEUE_PER_LCORE)
+ return 0;
+
+ return n;
+}
+
+static int
+l2fwd_parse_timer_period(const char *q_arg)
+{
+ char *end = NULL;
+ int n;
+
+ /* parse number string */
+ n = strtol(q_arg, &end, 10);
+ if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return -1;
+ if (n >= MAX_TIMER_PERIOD)
+ return -1;
+
+ return n;
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+l2fwd_parse_args(int argc, char **argv)
+{
+ int opt, ret;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ static struct option lgopts[] = {
+ {NULL, 0, 0, 0}
+ };
+ int has_pmask = 0;
+
+ argvopt = argv;
+
+ while ((opt = getopt_long(argc, argvopt, "p:q:T:f",
+ lgopts, &option_index)) != EOF) {
+
+ switch (opt) {
+ /* portmask */
+ case 'p':
+ l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
+ if (l2fwd_enabled_port_mask == 0) {
+ printf("invalid portmask\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ has_pmask = 1;
+ break;
+
+ /* nqueue */
+ case 'q':
+ l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
+ if (l2fwd_rx_queue_per_lcore == 0) {
+ printf("invalid queue number\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* timer period */
+ case 'T':
+ timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
+ if (timer_period < 0) {
+ printf("invalid timer period\n");
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ break;
+
+ /* use floating process */
+ case 'f':
+ float_proc = 1;
+ break;
+
+ /* long options */
+ case 0:
+ l2fwd_usage(prgname);
+ return -1;
+
+ default:
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ }
+
+ if (optind >= 0)
+ argv[optind-1] = prgname;
+
+ if (!has_pmask) {
+ l2fwd_usage(prgname);
+ return -1;
+ }
+ ret = optind-1;
+ optind = 0; /* reset getopt lib */
+ return ret;
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+ uint8_t portid, count, all_ports_up, print_flag = 0;
+ struct rte_eth_link link;
+
+ printf("\nChecking link status");
+ fflush(stdout);
+ for (count = 0; count <= MAX_CHECK_TIME; count++) {
+ all_ports_up = 1;
+ for (portid = 0; portid < port_num; portid++) {
+ if ((port_mask & (1 << portid)) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(portid, &link);
+ /* print link status if flag set */
+ if (print_flag == 1) {
+ if (link.link_status)
+ printf("Port %d Link Up - speed %u "
+ "Mbps - %s\n", (uint8_t)portid,
+ (unsigned)link.link_speed,
+ (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+ ("full-duplex") : ("half-duplex\n"));
+ else
+ printf("Port %d Link Down\n",
+ (uint8_t)portid);
+ continue;
+ }
+ /* clear all_ports_up flag if any link down */
+ if (link.link_status == ETH_LINK_DOWN) {
+ all_ports_up = 0;
+ break;
+ }
+ }
+ /* after finally printing all link status, get out */
+ if (print_flag == 1)
+ break;
+
+ if (all_ports_up == 0) {
+ printf(".");
+ fflush(stdout);
+ rte_delay_ms(CHECK_INTERVAL);
+ }
+
+ /* set the print_flag if all ports up or timeout */
+ if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+ print_flag = 1;
+ printf("done\n");
+ }
+ }
+}
+
+int
+main(int argc, char **argv)
+{
+ struct lcore_queue_conf *qconf;
+ struct rte_eth_dev_info dev_info;
+ int ret;
+ uint8_t nb_ports;
+ uint8_t nb_ports_available;
+ uint8_t portid, last_port;
+ unsigned rx_lcore_id;
+ unsigned nb_ports_in_mask = 0;
+ unsigned i;
+ int flags = 0;
+ uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
+
+ /* Save cpu_affinity first, restore it in case it's floating process option */
+ if (get_cpu_affinity() != 0)
+ rte_exit(EXIT_FAILURE, "get_cpu_affinity error\n");
+
+ /* Also tries to set cpu affinity to detect whether it will fail in child process */
+ if(clear_cpu_affinity() != 0)
+ rte_exit(EXIT_FAILURE, "clear_cpu_affinity error\n");
+
+ /* init EAL */
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
+ argc -= ret;
+ argv += ret;
+
+ /* parse application arguments (after the EAL ones) */
+ ret = l2fwd_parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
+
+ /*flib init */
+ if (flib_init() != 0)
+ rte_exit(EXIT_FAILURE, "flib init error");
+
+ /**
+ * Allocated structures that slave lcore would change. For those that slaves are
+ * read only, needn't use malloc to share and global or static variables is ok since
+ * slave inherit all the knowledge that master initialized.
+ **/
+ if (l2fwd_malloc_shared_struct() != 0)
+ rte_exit(EXIT_FAILURE, "malloc mem failed\n");
+
+ /* Initialize lcore_resource structures */
+ memset(lcore_resource, 0, sizeof(lcore_resource));
+ for (i = 0; i < RTE_MAX_LCORE; i++)
+ lcore_resource[i].lcore_id = i;
+
+ nb_ports = rte_eth_dev_count();
+ if (nb_ports == 0)
+ rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
+
+ if (nb_ports > RTE_MAX_ETHPORTS)
+ nb_ports = RTE_MAX_ETHPORTS;
+
+ /* create the mbuf pool */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+ char buf_name[RTE_MEMPOOL_NAMESIZE];
+ flags = MEMPOOL_F_SP_PUT | MEMPOOL_F_SC_GET;
+ snprintf(buf_name, RTE_MEMPOOL_NAMESIZE, MBUF_NAME, portid);
+ l2fwd_pktmbuf_pool[portid] =
+ rte_mempool_create(buf_name, NB_MBUF,
+ MBUF_SIZE, 32,
+ sizeof(struct rte_pktmbuf_pool_private),
+ rte_pktmbuf_pool_init, NULL,
+ rte_pktmbuf_init, NULL,
+ rte_socket_id(), flags);
+ if (l2fwd_pktmbuf_pool[portid] == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
+
+ printf("Create mbuf %s\n", buf_name);
+ }
+
+ /* reset l2fwd_dst_ports */
+ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
+ l2fwd_dst_ports[portid] = 0;
+ last_port = 0;
+
+ /*
+ * Each logical core is assigned a dedicated TX queue on each port.
+ */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ if (nb_ports_in_mask % 2) {
+ l2fwd_dst_ports[portid] = last_port;
+ l2fwd_dst_ports[last_port] = portid;
+ }
+ else
+ last_port = portid;
+
+ nb_ports_in_mask++;
+
+ rte_eth_dev_info_get(portid, &dev_info);
+ }
+ if (nb_ports_in_mask % 2) {
+ printf("Notice: odd number of ports in portmask.\n");
+ l2fwd_dst_ports[last_port] = last_port;
+ }
+
+ rx_lcore_id = 0;
+ qconf = NULL;
+
+ /* Initialize the port/queue configuration of each logical core */
+ for (portid = 0; portid < nb_ports; portid++) {
+ struct lcore_resource_struct *res;
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ /* get the lcore_id for this port */
+ /* skip master lcore */
+ while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
+ rte_get_master_lcore() == rx_lcore_id ||
+ lcore_queue_conf[rx_lcore_id].n_rx_port ==
+ l2fwd_rx_queue_per_lcore) {
+
+ rx_lcore_id++;
+ if (rx_lcore_id >= RTE_MAX_LCORE)
+ rte_exit(EXIT_FAILURE, "Not enough cores\n");
+ }
+
+ if (qconf != &lcore_queue_conf[rx_lcore_id])
+ /* Assigned a new logical core in the loop above. */
+ qconf = &lcore_queue_conf[rx_lcore_id];
+
+ qconf->rx_port_list[qconf->n_rx_port] = portid;
+ qconf->n_rx_port++;
+
+ /* Save the port resource info into lcore_resource strucutres */
+ res = &lcore_resource[rx_lcore_id];
+ res->enabled = 1;
+ res->port[res->port_num++] = portid;
+
+ printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
+ }
+
+ nb_ports_available = nb_ports;
+
+ /* Initialise each port */
+ for (portid = 0; portid < nb_ports; portid++) {
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
+ printf("Skipping disabled port %u\n", (unsigned) portid);
+ nb_ports_available--;
+ continue;
+ }
+ /* init port */
+ printf("Initializing port %u... ", (unsigned) portid);
+ fflush(stdout);
+ ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
+
+ /* init one RX queue */
+ fflush(stdout);
+ ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
+ rte_eth_dev_socket_id(portid),
+ NULL,
+ l2fwd_pktmbuf_pool[portid]);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ /* init one TX queue on each port */
+ fflush(stdout);
+ ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
+ rte_eth_dev_socket_id(portid),
+ NULL);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ /* Initialize TX buffers */
+ tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
+ RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
+ rte_eth_dev_socket_id(portid));
+ if (tx_buffer[portid] == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
+ (unsigned) portid);
+
+ rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
+
+ ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
+ rte_eth_tx_buffer_count_callback,
+ &port_statistics[portid].dropped);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot set error callback for "
+ "tx buffer on port %u\n", (unsigned) portid);
+
+ /* Start device */
+ ret = rte_eth_dev_start(portid);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
+ ret, (unsigned) portid);
+
+ printf("done: \n");
+
+ rte_eth_promiscuous_enable(portid);
+
+ printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
+ (unsigned) portid,
+ l2fwd_ports_eth_addr[portid].addr_bytes[0],
+ l2fwd_ports_eth_addr[portid].addr_bytes[1],
+ l2fwd_ports_eth_addr[portid].addr_bytes[2],
+ l2fwd_ports_eth_addr[portid].addr_bytes[3],
+ l2fwd_ports_eth_addr[portid].addr_bytes[4],
+ l2fwd_ports_eth_addr[portid].addr_bytes[5]);
+
+ /* initialize port stats */
+ //memset(&port_statistics, 0, sizeof(port_statistics));
+ }
+
+ if (!nb_ports_available) {
+ rte_exit(EXIT_FAILURE,
+ "All available ports are disabled. Please set portmask.\n");
+ }
+
+ check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
+
+ /* Record pair lcore */
+ /**
+ * Since l2fwd example would create pair between different neighbour port, that's
+ * port 0 receive and forward to port 1, the same to port 1, these 2 ports will have
+ * dependency. If one port stopped working (killed, for example), the port need to
+ * be stopped/started again. During the time, another port need to wait until stop/start
+ * procedure completed. So, record the pair relationship for those lcores working
+ * on ports.
+ **/
+ for (portid = 0; portid < nb_ports; portid++) {
+ uint32_t pair_port;
+ unsigned lcore = 0, pair_lcore = 0;
+ unsigned j, find_lcore, find_pair_lcore;
+ /* skip ports that are not enabled */
+ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
+ continue;
+
+ /* Find pair ports' lcores */
+ find_lcore = find_pair_lcore = 0;
+ pair_port = l2fwd_dst_ports[portid];
+ for (i = 0; i < RTE_MAX_LCORE; i++) {
+ if (!rte_lcore_is_enabled(i))
+ continue;
+ for (j = 0; j < lcore_queue_conf[i].n_rx_port;j++) {
+ if (lcore_queue_conf[i].rx_port_list[j] == portid) {
+ lcore = i;
+ find_lcore = 1;
+ break;
+ }
+ if (lcore_queue_conf[i].rx_port_list[j] == pair_port) {
+ pair_lcore = i;
+ find_pair_lcore = 1;
+ break;
+ }
+ }
+ if (find_lcore && find_pair_lcore)
+ break;
+ }
+ if (!find_lcore || !find_pair_lcore)
+ rte_exit(EXIT_FAILURE, "Not find port=%d pair\n", portid);
+
+ printf("lcore %u and %u paired\n", lcore, pair_lcore);
+ lcore_resource[lcore].pair_id = pair_lcore;
+ lcore_resource[pair_lcore].pair_id = lcore;
+ }
+
+ /* Create message buffer for all master and slave */
+ message_pool = rte_mempool_create("ms_msg_pool",
+ NB_CORE_MSGBUF * RTE_MAX_LCORE,
+ sizeof(enum l2fwd_cmd), NB_CORE_MSGBUF / 2,
+ 0,
+ rte_pktmbuf_pool_init, NULL,
+ rte_pktmbuf_init, NULL,
+ rte_socket_id(), 0);
+
+ if (message_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Create msg mempool failed\n");
+
+ /* Create ring for each master and slave pair, also register cb when slave leaves */
+ for (i = 0; i < RTE_MAX_LCORE; i++) {
+ /**
+ * Only create ring and register slave_exit cb in case that core involved into
+ * packet forwarding
+ **/
+ if (lcore_resource[i].enabled) {
+ /* Create ring for master and slave communication */
+ ret = create_ms_ring(i);
+ if (ret != 0)
+ rte_exit(EXIT_FAILURE, "Create ring for lcore=%u failed",
+ i);
+
+ if (flib_register_slave_exit_notify(i,
+ slave_exit_cb) != 0)
+ rte_exit(EXIT_FAILURE,
+ "Register master_trace_slave_exit failed");
+ }
+ }
+
+ /* launch per-lcore init on every lcore except master */
+ flib_mp_remote_launch(l2fwd_launch_one_lcore, NULL, SKIP_MASTER);
+
+ /* print statistics 10 second */
+ prev_tsc = cur_tsc = rte_rdtsc();
+ timer_tsc = 0;
+ while (1) {
+ sleep(1);
+ cur_tsc = rte_rdtsc();
+ diff_tsc = cur_tsc - prev_tsc;
+ /* if timer is enabled */
+ if (timer_period > 0) {
+
+ /* advance the timer */
+ timer_tsc += diff_tsc;
+
+ /* if timer has reached its timeout */
+ if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
+
+ print_stats();
+ /* reset the timer */
+ timer_tsc = 0;
+ }
+ }
+
+ prev_tsc = cur_tsc;
+
+ /* Check any slave need restart or recreate */
+ rte_spinlock_lock(&res_lock);
+ for (i = 0; i < RTE_MAX_LCORE; i++) {
+ struct lcore_resource_struct *res = &lcore_resource[i];
+ struct lcore_resource_struct *pair = &lcore_resource[res->pair_id];
+
+ /* If find slave exited, try to reset pair */
+ if (res->enabled && res->flags && pair->enabled) {
+ if (!pair->flags) {
+ master_sendcmd_with_ack(pair->lcore_id, CMD_STOP);
+ rte_spinlock_unlock(&res_lock);
+ sleep(1);
+ rte_spinlock_lock(&res_lock);
+ if (pair->flags)
+ continue;
+ }
+ if (reset_pair(res->lcore_id, pair->lcore_id) != 0)
+ rte_exit(EXIT_FAILURE, "failed to reset slave");
+ res->flags = 0;
+ pair->flags = 0;
+ }
+ }
+ rte_spinlock_unlock(&res_lock);
+ }
+
+}
Code Review / deb_dpdk.git / blobdiff