diff options
Diffstat (limited to 'examples/multi_process/l2fwd_fork/main.c')
| -rw-r--r-- | examples/multi_process/l2fwd_fork/main.c | 1288 |
1 files changed, 1288 insertions, 0 deletions
diff --git a/examples/multi_process/l2fwd_fork/main.c b/examples/multi_process/l2fwd_fork/main.c new file mode 100644 index 00000000..2dc8b829 --- /dev/null +++ b/examples/multi_process/l2fwd_fork/main.c @@ -0,0 +1,1288 @@ +/*- + * 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); + } + +} |