examples/l3fwd-power/main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2018 Intel Corporation
 */
 
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <string.h>
#include <sys/queue.h>
#include <stdarg.h>
#include <errno.h>
#include <getopt.h>
#include <unistd.h>
#include <signal.h>
#include <math.h>
 
#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.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_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include <rte_string_fns.h>
#include <rte_timer.h>
#include <rte_power.h>
#include <rte_spinlock.h>
#include <rte_power_empty_poll.h>
#include <rte_metrics.h>
#include <rte_telemetry.h>
#include <rte_power_pmd_mgmt.h>
 
#include "perf_core.h"
#include "main.h"
 
#define RTE_LOGTYPE_L3FWD_POWER RTE_LOGTYPE_USER1
 
#define MAX_PKT_BURST 32
 
#define MIN_ZERO_POLL_COUNT 10
 
/* 100 ms interval */
#define TIMER_NUMBER_PER_SECOND           10
/* (10ms) */
#define INTERVALS_PER_SECOND             100
/* 100000 us */
#define SCALING_PERIOD                    (1000000/TIMER_NUMBER_PER_SECOND)
#define SCALING_DOWN_TIME_RATIO_THRESHOLD 0.25
 
#define APP_LOOKUP_EXACT_MATCH          0
#define APP_LOOKUP_LPM                  1
#define DO_RFC_1812_CHECKS
 
#ifndef APP_LOOKUP_METHOD
#define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
#endif
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
#include <rte_hash.h>
#elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
#include <rte_lpm.h>
#else
#error "APP_LOOKUP_METHOD set to incorrect value"
#endif
 
#ifndef IPv6_BYTES
#define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
                       "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
#define IPv6_BYTES(addr) \
    addr[0],  addr[1], addr[2],  addr[3], \
    addr[4],  addr[5], addr[6],  addr[7], \
    addr[8],  addr[9], addr[10], addr[11],\
    addr[12], addr[13],addr[14], addr[15]
#endif
 
#define MAX_JUMBO_PKT_LEN  9600
 
#define IPV6_ADDR_LEN 16
 
#define MEMPOOL_CACHE_SIZE 256
 
/*
 * This expression is used to calculate the number of mbufs needed depending on
 * user input, taking into account memory for rx and tx hardware rings, cache
 * per lcore and mtable per port per lcore. RTE_MAX is used to ensure that
 * NB_MBUF never goes below a minimum value of 8192.
 */
 
#define NB_MBUF RTE_MAX ( \
    (nb_ports*nb_rx_queue*nb_rxd + \
    nb_ports*nb_lcores*MAX_PKT_BURST + \
    nb_ports*n_tx_queue*nb_txd + \
    nb_lcores*MEMPOOL_CACHE_SIZE), \
    (unsigned)8192)
 
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
#define NB_SOCKETS 8
 
/* Configure how many packets ahead to prefetch, when reading packets */
#define PREFETCH_OFFSET 3
 
/*
 * Configurable number of RX/TX ring descriptors
 */
#define RTE_TEST_RX_DESC_DEFAULT 1024
#define RTE_TEST_TX_DESC_DEFAULT 1024
 
/*
 * These two thresholds were decided on by running the training algorithm on
 * a 2.5GHz Xeon. These defaults can be overridden by supplying non-zero values
 * for the med_threshold and high_threshold parameters on the command line.
 */
#define EMPTY_POLL_MED_THRESHOLD 350000UL
#define EMPTY_POLL_HGH_THRESHOLD 580000UL
 
#define NUM_TELSTATS RTE_DIM(telstats_strings)
 
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 rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 
/* ethernet addresses of ports */
static rte_spinlock_t locks[RTE_MAX_ETHPORTS];
 
/* mask of enabled ports */
static uint32_t enabled_port_mask = 0;
/* Ports set in promiscuous mode off by default. */
static int promiscuous_on = 0;
/* NUMA is enabled by default. */
static int numa_on = 1;
static bool empty_poll_stop;
static bool empty_poll_train;
volatile bool quit_signal;
static struct  ep_params *ep_params;
static struct  ep_policy policy;
static long  ep_med_edpi, ep_hgh_edpi;
/* timer to update telemetry every 500ms */
static struct rte_timer telemetry_timer;
 
/* stats index returned by metrics lib */
int telstats_index;
 
struct telstats_name {
    char name[RTE_ETH_XSTATS_NAME_SIZE];
};
 
/* telemetry stats to be reported */
const struct telstats_name telstats_strings[] = {
    {"empty_poll"},
    {"full_poll"},
    {"busy_percent"}
};
 
/* core busyness in percentage */
enum busy_rate {
    ZERO = 0,
    PARTIAL = 50,
    FULL = 100
};
 
/* reference poll count to measure core busyness */
#define DEFAULT_COUNT 10000
/*
 * reference CYCLES to be used to
 * measure core busyness based on poll count
 */
#define MIN_CYCLES  1500000ULL
#define MAX_CYCLES 22000000ULL
 
/* (500ms) */
#define TELEMETRY_INTERVALS_PER_SEC 2
 
static int parse_ptype; 
enum appmode {
    APP_MODE_DEFAULT = 0,
    APP_MODE_LEGACY,
    APP_MODE_EMPTY_POLL,
    APP_MODE_TELEMETRY,
    APP_MODE_INTERRUPT,
    APP_MODE_PMD_MGMT
};
 
enum appmode app_mode;
 
static enum rte_power_pmd_mgmt_type pmgmt_type;
bool baseline_enabled;
 
enum freq_scale_hint_t
{
    FREQ_LOWER    =      -1,
    FREQ_CURRENT  =       0,
    FREQ_HIGHER   =       1,
    FREQ_HIGHEST  =       2
};
 
struct lcore_rx_queue {
    uint16_t port_id;
    uint8_t queue_id;
    enum freq_scale_hint_t freq_up_hint;
    uint32_t zero_rx_packet_count;
    uint32_t idle_hint;
} __rte_cache_aligned;
 
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
#define MAX_RX_QUEUE_PER_PORT 128
 
#define MAX_RX_QUEUE_INTERRUPT_PER_PORT 16
 
 
struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
static struct lcore_params lcore_params_array_default[] = {
    {0, 0, 2},
    {0, 1, 2},
    {0, 2, 2},
    {1, 0, 2},
    {1, 1, 2},
    {1, 2, 2},
    {2, 0, 2},
    {3, 0, 3},
    {3, 1, 3},
};
 
struct lcore_params *lcore_params = lcore_params_array_default;
uint16_t nb_lcore_params = RTE_DIM(lcore_params_array_default);
 
static struct rte_eth_conf port_conf = {
    .rxmode = {
        .mq_mode        = RTE_ETH_MQ_RX_RSS,
        .split_hdr_size = 0,
        .offloads = RTE_ETH_RX_OFFLOAD_CHECKSUM,
    },
    .rx_adv_conf = {
        .rss_conf = {
            .rss_key = NULL,
            .rss_hf = RTE_ETH_RSS_UDP,
        },
    },
    .txmode = {
        .mq_mode = RTE_ETH_MQ_TX_NONE,
    }
};
 
static uint32_t max_pkt_len;
 
static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
 
#ifdef RTE_ARCH_X86
#include <rte_hash_crc.h>
#define DEFAULT_HASH_FUNC       rte_hash_crc
#else
#include <rte_jhash.h>
#define DEFAULT_HASH_FUNC       rte_jhash
#endif
 
struct ipv4_5tuple {
    uint32_t ip_dst;
    uint32_t ip_src;
    uint16_t port_dst;
    uint16_t port_src;
    uint8_t  proto;
} __rte_packed;
 
struct ipv6_5tuple {
    uint8_t  ip_dst[IPV6_ADDR_LEN];
    uint8_t  ip_src[IPV6_ADDR_LEN];
    uint16_t port_dst;
    uint16_t port_src;
    uint8_t  proto;
} __rte_packed;
 
struct ipv4_l3fwd_route {
    struct ipv4_5tuple key;
    uint8_t if_out;
};
 
struct ipv6_l3fwd_route {
    struct ipv6_5tuple key;
    uint8_t if_out;
};
 
static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
    {{RTE_IPV4(100,10,0,1), RTE_IPV4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
    {{RTE_IPV4(100,20,0,2), RTE_IPV4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
    {{RTE_IPV4(100,30,0,3), RTE_IPV4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
    {{RTE_IPV4(100,40,0,4), RTE_IPV4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
};
 
static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
    {
        {
            {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
             0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
            {0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
             0x02, 0x1e, 0x67, 0xff, 0xfe, 0x0d, 0xb6, 0x0a},
             1, 10, IPPROTO_UDP
        }, 4
    },
};
 
typedef struct rte_hash lookup_struct_t;
static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
static lookup_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
 
#define L3FWD_HASH_ENTRIES  1024
 
static uint16_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
static uint16_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
#endif
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
struct ipv4_l3fwd_route {
    uint32_t ip;
    uint8_t  depth;
    uint8_t  if_out;
};
 
static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
    {RTE_IPV4(1,1,1,0), 24, 0},
    {RTE_IPV4(2,1,1,0), 24, 1},
    {RTE_IPV4(3,1,1,0), 24, 2},
    {RTE_IPV4(4,1,1,0), 24, 3},
    {RTE_IPV4(5,1,1,0), 24, 4},
    {RTE_IPV4(6,1,1,0), 24, 5},
    {RTE_IPV4(7,1,1,0), 24, 6},
    {RTE_IPV4(8,1,1,0), 24, 7},
};
 
#define IPV4_L3FWD_LPM_MAX_RULES     1024
 
typedef struct rte_lpm lookup_struct_t;
static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
#endif
 
struct lcore_conf {
    uint16_t n_rx_queue;
    struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
    uint16_t n_tx_port;
    uint16_t tx_port_id[RTE_MAX_ETHPORTS];
    uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
    struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
    lookup_struct_t * ipv4_lookup_struct;
    lookup_struct_t * ipv6_lookup_struct;
} __rte_cache_aligned;
 
struct lcore_stats {
    /* total sleep time in ms since last frequency scaling down */
    uint32_t sleep_time;
    /* number of long sleep recently */
    uint32_t nb_long_sleep;
    /* freq. scaling up trend */
    uint32_t trend;
    /* total packet processed recently */
    uint64_t nb_rx_processed;
    /* total iterations looped recently */
    uint64_t nb_iteration_looped;
    /*
     * Represents empty and non empty polls
     * of rte_eth_rx_burst();
     * ep_nep[0] holds non empty polls
     * i.e. 0 < nb_rx <= MAX_BURST
     * ep_nep[1] holds empty polls.
     * i.e. nb_rx == 0
     */
    uint64_t ep_nep[2];
    /*
     * Represents full and empty+partial
     * polls of rte_eth_rx_burst();
     * ep_nep[0] holds empty+partial polls.
     * i.e. 0 <= nb_rx < MAX_BURST
     * ep_nep[1] holds full polls
     * i.e. nb_rx == MAX_BURST
     */
    uint64_t fp_nfp[2];
    enum busy_rate br;
    rte_spinlock_t telemetry_lock;
} __rte_cache_aligned;
 
static struct lcore_conf lcore_conf[RTE_MAX_LCORE] __rte_cache_aligned;
static struct lcore_stats stats[RTE_MAX_LCORE] __rte_cache_aligned;
static struct rte_timer power_timers[RTE_MAX_LCORE];
 
static inline uint32_t power_idle_heuristic(uint32_t zero_rx_packet_count);
static inline enum freq_scale_hint_t power_freq_scaleup_heuristic( \
        unsigned int lcore_id, uint16_t port_id, uint16_t queue_id);
 
 
/*
 * These defaults are using the max frequency index (1), a medium index (9)
 * and a typical low frequency index (14). These can be adjusted to use
 * different indexes using the relevant command line parameters.
 */
static uint8_t  freq_tlb[] = {14, 9, 1};
 
static int is_done(void)
{
    return quit_signal;
}
 
/* exit signal handler */
static void
signal_exit_now(int sigtype)
{
 
    if (sigtype == SIGINT)
        quit_signal = true;
 
}
 
/*  Frequency scale down timer callback */
static void
power_timer_cb(__rte_unused struct rte_timer *tim,
              __rte_unused void *arg)
{
    uint64_t hz;
    float sleep_time_ratio;
    unsigned lcore_id = rte_lcore_id();
 
    /* accumulate total execution time in us when callback is invoked */
    sleep_time_ratio = (float)(stats[lcore_id].sleep_time) /
                    (float)SCALING_PERIOD;
    if (sleep_time_ratio >= SCALING_DOWN_TIME_RATIO_THRESHOLD) {
        if (rte_power_freq_down)
            rte_power_freq_down(lcore_id);
    }
    else if ( (unsigned)(stats[lcore_id].nb_rx_processed /
        stats[lcore_id].nb_iteration_looped) < MAX_PKT_BURST) {
        if (rte_power_freq_down)
            rte_power_freq_down(lcore_id);
    }
 
    hz = rte_get_timer_hz();
    rte_timer_reset(&power_timers[lcore_id], hz/TIMER_NUMBER_PER_SECOND,
                SINGLE, lcore_id, power_timer_cb, NULL);
 
    stats[lcore_id].nb_rx_processed = 0;
    stats[lcore_id].nb_iteration_looped = 0;
 
    stats[lcore_id].sleep_time = 0;
}
 
/* Enqueue a single packet, and send burst if queue is filled */
static inline int
send_single_packet(struct rte_mbuf *m, uint16_t port)
{
    uint32_t lcore_id;
    struct lcore_conf *qconf;
 
    lcore_id = rte_lcore_id();
    qconf = &lcore_conf[lcore_id];
 
    rte_eth_tx_buffer(port, qconf->tx_queue_id[port],
            qconf->tx_buffer[port], m);
 
    return 0;
}
 
#ifdef DO_RFC_1812_CHECKS
static inline int
is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len)
{
    /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
    /*
     * 1. The packet length reported by the Link Layer must be large
     * enough to hold the minimum length legal IP datagram (20 bytes).
     */
    if (link_len < sizeof(struct rte_ipv4_hdr))
        return -1;
 
    /* 2. The IP checksum must be correct. */
    /* if this is not checked in H/W, check it. */
    if ((port_conf.rxmode.offloads & RTE_ETH_RX_OFFLOAD_IPV4_CKSUM) == 0) {
        uint16_t actual_cksum, expected_cksum;
        actual_cksum = pkt->hdr_checksum;
        pkt->hdr_checksum = 0;
        expected_cksum = rte_ipv4_cksum(pkt);
        if (actual_cksum != expected_cksum)
            return -2;
    }
 
    /*
     * 3. The IP version number must be 4. If the version number is not 4
     * then the packet may be another version of IP, such as IPng or
     * ST-II.
     */
    if (((pkt->version_ihl) >> 4) != 4)
        return -3;
    /*
     * 4. The IP header length field must be large enough to hold the
     * minimum length legal IP datagram (20 bytes = 5 words).
     */
    if ((pkt->version_ihl & 0xf) < 5)
        return -4;
 
    /*
     * 5. The IP total length field must be large enough to hold the IP
     * datagram header, whose length is specified in the IP header length
     * field.
     */
    if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct rte_ipv4_hdr))
        return -5;
 
    return 0;
}
#endif
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
print_ipv4_key(struct ipv4_5tuple key)
{
    printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, "
        "proto = %d\n", (unsigned)key.ip_dst, (unsigned)key.ip_src,
                key.port_dst, key.port_src, key.proto);
}
static void
print_ipv6_key(struct ipv6_5tuple key)
{
    printf( "IP dst = " IPv6_BYTES_FMT ", IP src = " IPv6_BYTES_FMT ", "
            "port dst = %d, port src = %d, proto = %d\n",
            IPv6_BYTES(key.ip_dst), IPv6_BYTES(key.ip_src),
            key.port_dst, key.port_src, key.proto);
}
 
static inline uint16_t
get_ipv4_dst_port(struct rte_ipv4_hdr *ipv4_hdr, uint16_t portid,
        lookup_struct_t * ipv4_l3fwd_lookup_struct)
{
    struct ipv4_5tuple key;
    struct rte_tcp_hdr *tcp;
    struct rte_udp_hdr *udp;
    int ret = 0;
 
    key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
    key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
    key.proto = ipv4_hdr->next_proto_id;
 
    switch (ipv4_hdr->next_proto_id) {
    case IPPROTO_TCP:
        tcp = (struct rte_tcp_hdr *)((unsigned char *)ipv4_hdr +
                    sizeof(struct rte_ipv4_hdr));
        key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
        key.port_src = rte_be_to_cpu_16(tcp->src_port);
        break;
 
    case IPPROTO_UDP:
        udp = (struct rte_udp_hdr *)((unsigned char *)ipv4_hdr +
                    sizeof(struct rte_ipv4_hdr));
        key.port_dst = rte_be_to_cpu_16(udp->dst_port);
        key.port_src = rte_be_to_cpu_16(udp->src_port);
        break;
 
    default:
        key.port_dst = 0;
        key.port_src = 0;
        break;
    }
 
    /* Find destination port */
    ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
    return ((ret < 0) ? portid : ipv4_l3fwd_out_if[ret]);
}
 
static inline uint16_t
get_ipv6_dst_port(struct rte_ipv6_hdr *ipv6_hdr, uint16_t portid,
            lookup_struct_t *ipv6_l3fwd_lookup_struct)
{
    struct ipv6_5tuple key;
    struct rte_tcp_hdr *tcp;
    struct rte_udp_hdr *udp;
    int ret = 0;
 
    memcpy(key.ip_dst, ipv6_hdr->dst_addr, IPV6_ADDR_LEN);
    memcpy(key.ip_src, ipv6_hdr->src_addr, IPV6_ADDR_LEN);
 
    key.proto = ipv6_hdr->proto;
 
    switch (ipv6_hdr->proto) {
    case IPPROTO_TCP:
        tcp = (struct rte_tcp_hdr *)((unsigned char *) ipv6_hdr +
                    sizeof(struct rte_ipv6_hdr));
        key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
        key.port_src = rte_be_to_cpu_16(tcp->src_port);
        break;
 
    case IPPROTO_UDP:
        udp = (struct rte_udp_hdr *)((unsigned char *) ipv6_hdr +
                    sizeof(struct rte_ipv6_hdr));
        key.port_dst = rte_be_to_cpu_16(udp->dst_port);
        key.port_src = rte_be_to_cpu_16(udp->src_port);
        break;
 
    default:
        key.port_dst = 0;
        key.port_src = 0;
        break;
    }
 
    /* Find destination port */
    ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
    return ((ret < 0) ? portid : ipv6_l3fwd_out_if[ret]);
}
#endif
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static inline uint16_t
get_ipv4_dst_port(struct rte_ipv4_hdr *ipv4_hdr, uint16_t portid,
        lookup_struct_t *ipv4_l3fwd_lookup_struct)
{
    uint32_t next_hop;
 
    return ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
            rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
            next_hop : portid);
}
#endif
 
static inline void
parse_ptype_one(struct rte_mbuf *m)
{
    struct rte_ether_hdr *eth_hdr;
    uint32_t packet_type = RTE_PTYPE_UNKNOWN;
    uint16_t ether_type;
 
    eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
    ether_type = eth_hdr->ether_type;
    if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
        packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
    else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
        packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 
    m->packet_type = packet_type;
}
 
static uint16_t
cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
           struct rte_mbuf *pkts[], uint16_t nb_pkts,
           uint16_t max_pkts __rte_unused,
           void *user_param __rte_unused)
{
    unsigned int i;
 
    for (i = 0; i < nb_pkts; ++i)
        parse_ptype_one(pkts[i]);
 
    return nb_pkts;
}
 
static int
add_cb_parse_ptype(uint16_t portid, uint16_t queueid)
{
    printf("Port %d: softly parse packet type info\n", portid);
    if (rte_eth_add_rx_callback(portid, queueid, cb_parse_ptype, NULL))
        return 0;
 
    printf("Failed to add rx callback: port=%d\n", portid);
    return -1;
}
 
static inline void
l3fwd_simple_forward(struct rte_mbuf *m, uint16_t portid,
                struct lcore_conf *qconf)
{
    struct rte_ether_hdr *eth_hdr;
    struct rte_ipv4_hdr *ipv4_hdr;
    void *d_addr_bytes;
    uint16_t dst_port;
 
    eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 
    if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
        /* Handle IPv4 headers.*/
        ipv4_hdr =
            rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
                        sizeof(struct rte_ether_hdr));
 
#ifdef DO_RFC_1812_CHECKS
        /* Check to make sure the packet is valid (RFC1812) */
        if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
            rte_pktmbuf_free(m);
            return;
        }
#endif
 
        dst_port = get_ipv4_dst_port(ipv4_hdr, portid,
                    qconf->ipv4_lookup_struct);
        if (dst_port >= RTE_MAX_ETHPORTS ||
                (enabled_port_mask & 1 << dst_port) == 0)
            dst_port = portid;
 
        /* 02:00:00:00:00:xx */
        d_addr_bytes = &eth_hdr->dst_addr.addr_bytes[0];
        *((uint64_t *)d_addr_bytes) =
            0x000000000002 + ((uint64_t)dst_port << 40);
 
#ifdef DO_RFC_1812_CHECKS
        /* Update time to live and header checksum */
        --(ipv4_hdr->time_to_live);
        ++(ipv4_hdr->hdr_checksum);
#endif
 
        /* src addr */
        rte_ether_addr_copy(&ports_eth_addr[dst_port],
                &eth_hdr->src_addr);
 
        send_single_packet(m, dst_port);
    } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
        /* Handle IPv6 headers.*/
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
        struct rte_ipv6_hdr *ipv6_hdr;
 
        ipv6_hdr =
            rte_pktmbuf_mtod_offset(m, struct rte_ipv6_hdr *,
                        sizeof(struct rte_ether_hdr));
 
        dst_port = get_ipv6_dst_port(ipv6_hdr, portid,
                    qconf->ipv6_lookup_struct);
 
        if (dst_port >= RTE_MAX_ETHPORTS ||
                (enabled_port_mask & 1 << dst_port) == 0)
            dst_port = portid;
 
        /* 02:00:00:00:00:xx */
        d_addr_bytes = &eth_hdr->dst_addr.addr_bytes[0];
        *((uint64_t *)d_addr_bytes) =
            0x000000000002 + ((uint64_t)dst_port << 40);
 
        /* src addr */
        rte_ether_addr_copy(&ports_eth_addr[dst_port],
                &eth_hdr->src_addr);
 
        send_single_packet(m, dst_port);
#else
        /* We don't currently handle IPv6 packets in LPM mode. */
        rte_pktmbuf_free(m);
#endif
    } else
        rte_pktmbuf_free(m);
 
}
 
#define MINIMUM_SLEEP_TIME         1
#define SUSPEND_THRESHOLD          300
 
static inline uint32_t
power_idle_heuristic(uint32_t zero_rx_packet_count)
{
    /* If zero count is less than 100,  sleep 1us */
    if (zero_rx_packet_count < SUSPEND_THRESHOLD)
        return MINIMUM_SLEEP_TIME;
    /* If zero count is less than 1000, sleep 100 us which is the
        minimum latency switching from C3/C6 to C0
    */
    else
        return SUSPEND_THRESHOLD;
}
 
static inline enum freq_scale_hint_t
power_freq_scaleup_heuristic(unsigned lcore_id,
                 uint16_t port_id,
                 uint16_t queue_id)
{
    uint32_t rxq_count = rte_eth_rx_queue_count(port_id, queue_id);
#define FREQ_GEAR1_RX_PACKET_THRESHOLD             MAX_PKT_BURST
#define FREQ_GEAR2_RX_PACKET_THRESHOLD             (MAX_PKT_BURST*2)
#define FREQ_GEAR3_RX_PACKET_THRESHOLD             (MAX_PKT_BURST*3)
#define FREQ_UP_TREND1_ACC   1
#define FREQ_UP_TREND2_ACC   100
#define FREQ_UP_THRESHOLD    10000
 
    if (likely(rxq_count > FREQ_GEAR3_RX_PACKET_THRESHOLD)) {
        stats[lcore_id].trend = 0;
        return FREQ_HIGHEST;
    } else if (likely(rxq_count > FREQ_GEAR2_RX_PACKET_THRESHOLD))
        stats[lcore_id].trend += FREQ_UP_TREND2_ACC;
    else if (likely(rxq_count > FREQ_GEAR1_RX_PACKET_THRESHOLD))
        stats[lcore_id].trend += FREQ_UP_TREND1_ACC;
 
    if (likely(stats[lcore_id].trend > FREQ_UP_THRESHOLD)) {
        stats[lcore_id].trend = 0;
        return FREQ_HIGHER;
    }
 
    return FREQ_CURRENT;
}
 
static int
sleep_until_rx_interrupt(int num, int lcore)
{
    /*
     * we want to track when we are woken up by traffic so that we can go
     * back to sleep again without log spamming. Avoid cache line sharing
     * to prevent threads stepping on each others' toes.
     */
    static struct {
        bool wakeup;
    } __rte_cache_aligned status[RTE_MAX_LCORE];
    struct rte_epoll_event event[num];
    int n, i;
    uint16_t port_id;
    uint8_t queue_id;
    void *data;
 
    if (status[lcore].wakeup) {
        RTE_LOG(INFO, L3FWD_POWER,
                "lcore %u sleeps until interrupt triggers\n",
                rte_lcore_id());
    }
 
    n = rte_epoll_wait(RTE_EPOLL_PER_THREAD, event, num, 10);
    for (i = 0; i < n; i++) {
        data = event[i].epdata.data;
        port_id = ((uintptr_t)data) >> CHAR_BIT;
        queue_id = ((uintptr_t)data) &
            RTE_LEN2MASK(CHAR_BIT, uint8_t);
        RTE_LOG(INFO, L3FWD_POWER,
            "lcore %u is waked up from rx interrupt on"
            " port %d queue %d\n",
            rte_lcore_id(), port_id, queue_id);
    }
    status[lcore].wakeup = n != 0;
 
    return 0;
}
 
static void turn_on_off_intr(struct lcore_conf *qconf, bool on)
{
    int i;
    struct lcore_rx_queue *rx_queue;
    uint8_t queue_id;
    uint16_t port_id;
 
    for (i = 0; i < qconf->n_rx_queue; ++i) {
        rx_queue = &(qconf->rx_queue_list[i]);
        port_id = rx_queue->port_id;
        queue_id = rx_queue->queue_id;
 
        rte_spinlock_lock(&(locks[port_id]));
        if (on)
            rte_eth_dev_rx_intr_enable(port_id, queue_id);
        else
            rte_eth_dev_rx_intr_disable(port_id, queue_id);
        rte_spinlock_unlock(&(locks[port_id]));
    }
}
 
static int event_register(struct lcore_conf *qconf)
{
    struct lcore_rx_queue *rx_queue;
    uint8_t queueid;
    uint16_t portid;
    uint32_t data;
    int ret;
    int i;
 
    for (i = 0; i < qconf->n_rx_queue; ++i) {
        rx_queue = &(qconf->rx_queue_list[i]);
        portid = rx_queue->port_id;
        queueid = rx_queue->queue_id;
        data = portid << CHAR_BIT | queueid;
 
        ret = rte_eth_dev_rx_intr_ctl_q(portid, queueid,
                        RTE_EPOLL_PER_THREAD,
                        RTE_INTR_EVENT_ADD,
                        (void *)((uintptr_t)data));
        if (ret)
            return ret;
    }
 
    return 0;
}
 
/* Main processing loop. 8< */
static int main_intr_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, j, nb_rx;
    uint8_t queueid;
    uint16_t portid;
    struct lcore_conf *qconf;
    struct lcore_rx_queue *rx_queue;
    uint32_t lcore_rx_idle_count = 0;
    uint32_t lcore_idle_hint = 0;
    int intr_en = 0;
 
    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_POWER, "lcore %u has nothing to do\n",
                lcore_id);
        return 0;
    }
 
    RTE_LOG(INFO, L3FWD_POWER, "entering main interrupt 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_POWER,
                " -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
                lcore_id, portid, queueid);
    }
 
    /* add into event wait list */
    if (event_register(qconf) == 0)
        intr_en = 1;
    else
        RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 
    while (!is_done()) {
        stats[lcore_id].nb_iteration_looped++;
 
        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];
                rte_eth_tx_buffer_flush(portid,
                        qconf->tx_queue_id[portid],
                        qconf->tx_buffer[portid]);
            }
            prev_tsc = cur_tsc;
        }
 
start_rx:
        /*
         * Read packet from RX queues
         */
        lcore_rx_idle_count = 0;
        for (i = 0; i < qconf->n_rx_queue; ++i) {
            rx_queue = &(qconf->rx_queue_list[i]);
            rx_queue->idle_hint = 0;
            portid = rx_queue->port_id;
            queueid = rx_queue->queue_id;
 
            nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
                    MAX_PKT_BURST);
 
            stats[lcore_id].nb_rx_processed += nb_rx;
            if (unlikely(nb_rx == 0)) {
                rx_queue->zero_rx_packet_count++;
 
                if (rx_queue->zero_rx_packet_count <=
                        MIN_ZERO_POLL_COUNT)
                    continue;
 
                rx_queue->idle_hint = power_idle_heuristic(
                        rx_queue->zero_rx_packet_count);
                lcore_rx_idle_count++;
            } else {
                rx_queue->zero_rx_packet_count = 0;
            }
 
            /* Prefetch first packets */
            for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
                rte_prefetch0(rte_pktmbuf_mtod(
                        pkts_burst[j], void *));
            }
 
            /* Prefetch and forward already prefetched packets */
            for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
                rte_prefetch0(rte_pktmbuf_mtod(
                        pkts_burst[j + PREFETCH_OFFSET],
                        void *));
                l3fwd_simple_forward(
                        pkts_burst[j], portid, qconf);
            }
 
            /* Forward remaining prefetched packets */
            for (; j < nb_rx; j++) {
                l3fwd_simple_forward(
                        pkts_burst[j], portid, qconf);
            }
        }
 
        if (unlikely(lcore_rx_idle_count == qconf->n_rx_queue)) {
            for (i = 1,
                lcore_idle_hint = qconf->rx_queue_list[0].idle_hint;
                    i < qconf->n_rx_queue; ++i) {
                rx_queue = &(qconf->rx_queue_list[i]);
                if (rx_queue->idle_hint < lcore_idle_hint)
                    lcore_idle_hint = rx_queue->idle_hint;
            }
 
            if (lcore_idle_hint < SUSPEND_THRESHOLD)
                rte_delay_us(lcore_idle_hint);
            else {
                /* suspend until rx interrupt triggers */
                if (intr_en) {
                    turn_on_off_intr(qconf, 1);
                    sleep_until_rx_interrupt(
                            qconf->n_rx_queue,
                            lcore_id);
                    turn_on_off_intr(qconf, 0);
                    if (likely(!is_done()))
                        goto start_rx;
                }
            }
            stats[lcore_id].sleep_time += lcore_idle_hint;
        }
    }
 
    return 0;
}
/* >8 End of main processing loop. */
 
/* main processing loop */
static int
main_telemetry_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, prev_tel_tsc;
    int i, j, nb_rx;
    uint8_t queueid;
    uint16_t portid;
    struct lcore_conf *qconf;
    struct lcore_rx_queue *rx_queue;
    uint64_t ep_nep[2] = {0}, fp_nfp[2] = {0};
    uint64_t poll_count;
    enum busy_rate br;
 
    const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
                    US_PER_S * BURST_TX_DRAIN_US;
 
    poll_count = 0;
    prev_tsc = 0;
    prev_tel_tsc = 0;
 
    lcore_id = rte_lcore_id();
    qconf = &lcore_conf[lcore_id];
 
    if (qconf->n_rx_queue == 0) {
        RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n",
            lcore_id);
        return 0;
    }
 
    RTE_LOG(INFO, L3FWD_POWER, "entering main telemetry 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_POWER, " -- lcoreid=%u portid=%u "
            "rxqueueid=%hhu\n", lcore_id, portid, queueid);
    }
 
    while (!is_done()) {
 
        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];
                rte_eth_tx_buffer_flush(portid,
                        qconf->tx_queue_id[portid],
                        qconf->tx_buffer[portid]);
            }
            prev_tsc = cur_tsc;
        }
 
        /*
         * Read packet from RX queues
         */
        for (i = 0; i < qconf->n_rx_queue; ++i) {
            rx_queue = &(qconf->rx_queue_list[i]);
            portid = rx_queue->port_id;
            queueid = rx_queue->queue_id;
 
            nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
                                MAX_PKT_BURST);
            ep_nep[nb_rx == 0]++;
            fp_nfp[nb_rx == MAX_PKT_BURST]++;
            poll_count++;
            if (unlikely(nb_rx == 0))
                continue;
 
            /* Prefetch first packets */
            for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
                rte_prefetch0(rte_pktmbuf_mtod(
                        pkts_burst[j], void *));
            }
 
            /* Prefetch and forward already prefetched packets */
            for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
                rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
                        j + PREFETCH_OFFSET], void *));
                l3fwd_simple_forward(pkts_burst[j], portid,
                                qconf);
            }
 
            /* Forward remaining prefetched packets */
            for (; j < nb_rx; j++) {
                l3fwd_simple_forward(pkts_burst[j], portid,
                                qconf);
            }
        }
        if (unlikely(poll_count >= DEFAULT_COUNT)) {
            diff_tsc = cur_tsc - prev_tel_tsc;
            if (diff_tsc >= MAX_CYCLES) {
                br = FULL;
            } else if (diff_tsc > MIN_CYCLES &&
                    diff_tsc < MAX_CYCLES) {
                br = (diff_tsc * 100) / MAX_CYCLES;
            } else {
                br = ZERO;
            }
            poll_count = 0;
            prev_tel_tsc = cur_tsc;
            /* update stats for telemetry */
            rte_spinlock_lock(&stats[lcore_id].telemetry_lock);
            stats[lcore_id].ep_nep[0] = ep_nep[0];
            stats[lcore_id].ep_nep[1] = ep_nep[1];
            stats[lcore_id].fp_nfp[0] = fp_nfp[0];
            stats[lcore_id].fp_nfp[1] = fp_nfp[1];
            stats[lcore_id].br = br;
            rte_spinlock_unlock(&stats[lcore_id].telemetry_lock);
        }
    }
 
    return 0;
}
/* main processing loop */
static int
main_empty_poll_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, j, nb_rx;
    uint8_t queueid;
    uint16_t portid;
    struct lcore_conf *qconf;
    struct lcore_rx_queue *rx_queue;
 
    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_POWER, "lcore %u has nothing to do\n",
            lcore_id);
        return 0;
    }
 
    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_POWER, " -- lcoreid=%u portid=%u "
                "rxqueueid=%hhu\n", lcore_id, portid, queueid);
    }
 
    while (!is_done()) {
        stats[lcore_id].nb_iteration_looped++;
 
        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];
                rte_eth_tx_buffer_flush(portid,
                        qconf->tx_queue_id[portid],
                        qconf->tx_buffer[portid]);
            }
            prev_tsc = cur_tsc;
        }
 
        /*
         * Read packet from RX queues
         */
        for (i = 0; i < qconf->n_rx_queue; ++i) {
            rx_queue = &(qconf->rx_queue_list[i]);
            rx_queue->idle_hint = 0;
            portid = rx_queue->port_id;
            queueid = rx_queue->queue_id;
 
            nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
                    MAX_PKT_BURST);
 
            stats[lcore_id].nb_rx_processed += nb_rx;
 
            if (nb_rx == 0) {
 
                rte_power_empty_poll_stat_update(lcore_id);
 
                continue;
            } else {
                rte_power_poll_stat_update(lcore_id, nb_rx);
            }
 
 
            /* Prefetch first packets */
            for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
                rte_prefetch0(rte_pktmbuf_mtod(
                            pkts_burst[j], void *));
            }
 
            /* Prefetch and forward already prefetched packets */
            for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
                rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
                            j + PREFETCH_OFFSET],
                            void *));
                l3fwd_simple_forward(pkts_burst[j], portid,
                        qconf);
            }
 
            /* Forward remaining prefetched packets */
            for (; j < nb_rx; j++) {
                l3fwd_simple_forward(pkts_burst[j], portid,
                        qconf);
            }
 
        }
 
    }
 
    return 0;
}
/* main processing loop */
static int
main_legacy_loop(__rte_unused void *dummy)
{
    struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
    unsigned lcore_id;
    uint64_t prev_tsc, diff_tsc, cur_tsc, tim_res_tsc, hz;
    uint64_t prev_tsc_power = 0, cur_tsc_power, diff_tsc_power;
    int i, j, nb_rx;
    uint8_t queueid;
    uint16_t portid;
    struct lcore_conf *qconf;
    struct lcore_rx_queue *rx_queue;
    enum freq_scale_hint_t lcore_scaleup_hint;
    uint32_t lcore_rx_idle_count = 0;
    uint32_t lcore_idle_hint = 0;
    int intr_en = 0;
 
    const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 
    prev_tsc = 0;
    hz = rte_get_timer_hz();
    tim_res_tsc = hz/TIMER_NUMBER_PER_SECOND;
 
    lcore_id = rte_lcore_id();
    qconf = &lcore_conf[lcore_id];
 
    if (qconf->n_rx_queue == 0) {
        RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n", lcore_id);
        return 0;
    }
 
    RTE_LOG(INFO, L3FWD_POWER, "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_POWER, " -- lcoreid=%u portid=%u "
            "rxqueueid=%hhu\n", lcore_id, portid, queueid);
    }
 
    /* add into event wait list */
    if (event_register(qconf) == 0)
        intr_en = 1;
    else
        RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
 
    while (!is_done()) {
        stats[lcore_id].nb_iteration_looped++;
 
        cur_tsc = rte_rdtsc();
        cur_tsc_power = cur_tsc;
 
        /*
         * 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];
                rte_eth_tx_buffer_flush(portid,
                        qconf->tx_queue_id[portid],
                        qconf->tx_buffer[portid]);
            }
            prev_tsc = cur_tsc;
        }
 
        diff_tsc_power = cur_tsc_power - prev_tsc_power;
        if (diff_tsc_power > tim_res_tsc) {
            rte_timer_manage();
            prev_tsc_power = cur_tsc_power;
        }
 
start_rx:
        /*
         * Read packet from RX queues
         */
        lcore_scaleup_hint = FREQ_CURRENT;
        lcore_rx_idle_count = 0;
        for (i = 0; i < qconf->n_rx_queue; ++i) {
            rx_queue = &(qconf->rx_queue_list[i]);
            rx_queue->idle_hint = 0;
            portid = rx_queue->port_id;
            queueid = rx_queue->queue_id;
 
            nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
                                MAX_PKT_BURST);
 
            stats[lcore_id].nb_rx_processed += nb_rx;
            if (unlikely(nb_rx == 0)) {
                rx_queue->zero_rx_packet_count++;
 
                if (rx_queue->zero_rx_packet_count <=
                            MIN_ZERO_POLL_COUNT)
                    continue;
 
                rx_queue->idle_hint = power_idle_heuristic(\
                    rx_queue->zero_rx_packet_count);
                lcore_rx_idle_count++;
            } else {
                rx_queue->zero_rx_packet_count = 0;
 
                rx_queue->freq_up_hint =
                    power_freq_scaleup_heuristic(lcore_id,
                            portid, queueid);
            }
 
            /* Prefetch first packets */
            for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
                rte_prefetch0(rte_pktmbuf_mtod(
                        pkts_burst[j], void *));
            }
 
            /* Prefetch and forward already prefetched packets */
            for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
                rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
                        j + PREFETCH_OFFSET], void *));
                l3fwd_simple_forward(pkts_burst[j], portid,
                                qconf);
            }
 
            /* Forward remaining prefetched packets */
            for (; j < nb_rx; j++) {
                l3fwd_simple_forward(pkts_burst[j], portid,
                                qconf);
            }
        }
 
        if (likely(lcore_rx_idle_count != qconf->n_rx_queue)) {
            for (i = 1, lcore_scaleup_hint =
                qconf->rx_queue_list[0].freq_up_hint;
                    i < qconf->n_rx_queue; ++i) {
                rx_queue = &(qconf->rx_queue_list[i]);
                if (rx_queue->freq_up_hint >
                        lcore_scaleup_hint)
                    lcore_scaleup_hint =
                        rx_queue->freq_up_hint;
            }
 
            if (lcore_scaleup_hint == FREQ_HIGHEST) {
                if (rte_power_freq_max)
                    rte_power_freq_max(lcore_id);
            } else if (lcore_scaleup_hint == FREQ_HIGHER) {
                if (rte_power_freq_up)
                    rte_power_freq_up(lcore_id);
            }
        } else {
            for (i = 1, lcore_idle_hint =
                qconf->rx_queue_list[0].idle_hint;
                    i < qconf->n_rx_queue; ++i) {
                rx_queue = &(qconf->rx_queue_list[i]);
                if (rx_queue->idle_hint < lcore_idle_hint)
                    lcore_idle_hint = rx_queue->idle_hint;
            }
 
            if (lcore_idle_hint < SUSPEND_THRESHOLD)
                rte_delay_us(lcore_idle_hint);
            else {
                /* suspend until rx interrupt triggers */
                if (intr_en) {
                    turn_on_off_intr(qconf, 1);
                    sleep_until_rx_interrupt(
                            qconf->n_rx_queue,
                            lcore_id);
                    turn_on_off_intr(qconf, 0);
                    if (likely(!is_done()))
                        goto start_rx;
                }
            }
            stats[lcore_id].sleep_time += lcore_idle_hint;
        }
    }
 
    return 0;
}
 
static int
check_lcore_params(void)
{
    uint8_t queue, lcore;
    uint16_t i;
    int socketid;
 
    for (i = 0; i < nb_lcore_params; ++i) {
        queue = lcore_params[i].queue_id;
        if (queue >= MAX_RX_QUEUE_PER_PORT) {
            printf("invalid queue number: %hhu\n", queue);
            return -1;
        }
        lcore = lcore_params[i].lcore_id;
        if (!rte_lcore_is_enabled(lcore)) {
            printf("error: lcore %hhu is not enabled in lcore "
                            "mask\n", lcore);
            return -1;
        }
        if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
                            (numa_on == 0)) {
            printf("warning: lcore %hhu is on socket %d with numa "
                        "off\n", lcore, socketid);
        }
        if (app_mode == APP_MODE_TELEMETRY && lcore == rte_lcore_id()) {
            printf("cannot enable main core %d in config for telemetry mode\n",
                rte_lcore_id());
            return -1;
        }
    }
    return 0;
}
 
static int
check_port_config(void)
{
    unsigned portid;
    uint16_t i;
 
    for (i = 0; i < nb_lcore_params; ++i) {
        portid = lcore_params[i].port_id;
        if ((enabled_port_mask & (1 << portid)) == 0) {
            printf("port %u is not enabled in port mask\n",
                                portid);
            return -1;
        }
        if (!rte_eth_dev_is_valid_port(portid)) {
            printf("port %u is not present on the board\n",
                                portid);
            return -1;
        }
    }
    return 0;
}
 
static uint8_t
get_port_n_rx_queues(const uint16_t port)
{
    int queue = -1;
    uint16_t i;
 
    for (i = 0; i < nb_lcore_params; ++i) {
        if (lcore_params[i].port_id == port &&
                lcore_params[i].queue_id > queue)
            queue = lcore_params[i].queue_id;
    }
    return (uint8_t)(++queue);
}
 
static int
init_lcore_rx_queues(void)
{
    uint16_t i, nb_rx_queue;
    uint8_t lcore;
 
    for (i = 0; i < nb_lcore_params; ++i) {
        lcore = lcore_params[i].lcore_id;
        nb_rx_queue = lcore_conf[lcore].n_rx_queue;
        if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
            printf("error: too many queues (%u) for lcore: %u\n",
                (unsigned)nb_rx_queue + 1, (unsigned)lcore);
            return -1;
        } else {
            lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
                lcore_params[i].port_id;
            lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
                lcore_params[i].queue_id;
            lcore_conf[lcore].n_rx_queue++;
        }
    }
    return 0;
}
 
/* display usage */
static void
print_usage(const char *prgname)
{
    printf ("%s [EAL options] -- -p PORTMASK -P"
        "  [--config (port,queue,lcore)[,(port,queue,lcore]]"
        "  [--high-perf-cores CORELIST"
        "  [--perf-config (port,queue,hi_perf,lcore_index)[,(port,queue,hi_perf,lcore_index]]"
        "  [--max-pkt-len PKTLEN]\n"
        "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
        "  -P: enable promiscuous mode\n"
        "  --config (port,queue,lcore): rx queues configuration\n"
        "  --high-perf-cores CORELIST: list of high performance cores\n"
        "  --perf-config: similar as config, cores specified as indices"
        " for bins containing high or regular performance cores\n"
        "  --no-numa: optional, disable numa awareness\n"
        "  --max-pkt-len PKTLEN: maximum packet length in decimal (64-9600)\n"
        "  --parse-ptype: parse packet type by software\n"
        "  --legacy: use legacy interrupt-based scaling\n"
        "  --empty-poll: enable empty poll detection"
        " follow (training_flag, high_threshold, med_threshold)\n"
        " --telemetry: enable telemetry mode, to update"
        " empty polls, full polls, and core busyness to telemetry\n"
        " --interrupt-only: enable interrupt-only mode\n"
        " --pmd-mgmt MODE: enable PMD power management mode. "
        "Currently supported modes: baseline, monitor, pause, scale\n",
        prgname);
}
 
static int parse_max_pkt_len(const char *pktlen)
{
    char *end = NULL;
    unsigned long len;
 
    /* parse decimal string */
    len = strtoul(pktlen, &end, 10);
    if ((pktlen[0] == '\0') || (end == NULL) || (*end != '\0'))
        return -1;
 
    if (len == 0)
        return -1;
 
    return len;
}
 
static int
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 0;
 
    return pm;
}
 
static int
parse_config(const char *q_arg)
{
    char s[256];
    const char *p, *p0 = q_arg;
    char *end;
    enum fieldnames {
        FLD_PORT = 0,
        FLD_QUEUE,
        FLD_LCORE,
        _NUM_FLD
    };
    unsigned long int_fld[_NUM_FLD];
    char *str_fld[_NUM_FLD];
    int i;
    unsigned size;
 
    nb_lcore_params = 0;
 
    while ((p = strchr(p0,'(')) != NULL) {
        ++p;
        if((p0 = strchr(p,')')) == NULL)
            return -1;
 
        size = p0 - p;
        if(size >= sizeof(s))
            return -1;
 
        snprintf(s, sizeof(s), "%.*s", size, p);
        if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') !=
                                _NUM_FLD)
            return -1;
        for (i = 0; i < _NUM_FLD; i++){
            errno = 0;
            int_fld[i] = strtoul(str_fld[i], &end, 0);
            if (errno != 0 || end == str_fld[i] || int_fld[i] >
                                    255)
                return -1;
        }
        if (nb_lcore_params >= MAX_LCORE_PARAMS) {
            printf("exceeded max number of lcore params: %hu\n",
                nb_lcore_params);
            return -1;
        }
        lcore_params_array[nb_lcore_params].port_id =
                (uint8_t)int_fld[FLD_PORT];
        lcore_params_array[nb_lcore_params].queue_id =
                (uint8_t)int_fld[FLD_QUEUE];
        lcore_params_array[nb_lcore_params].lcore_id =
                (uint8_t)int_fld[FLD_LCORE];
        ++nb_lcore_params;
    }
    lcore_params = lcore_params_array;
 
    return 0;
}
 
static int
parse_pmd_mgmt_config(const char *name)
{
#define PMD_MGMT_MONITOR "monitor"
#define PMD_MGMT_PAUSE   "pause"
#define PMD_MGMT_SCALE   "scale"
#define PMD_MGMT_BASELINE  "baseline"
 
    if (strncmp(PMD_MGMT_MONITOR, name, sizeof(PMD_MGMT_MONITOR)) == 0) {
        pmgmt_type = RTE_POWER_MGMT_TYPE_MONITOR;
        return 0;
    }
 
    if (strncmp(PMD_MGMT_PAUSE, name, sizeof(PMD_MGMT_PAUSE)) == 0) {
        pmgmt_type = RTE_POWER_MGMT_TYPE_PAUSE;
        return 0;
    }
 
    if (strncmp(PMD_MGMT_SCALE, name, sizeof(PMD_MGMT_SCALE)) == 0) {
        pmgmt_type = RTE_POWER_MGMT_TYPE_SCALE;
        return 0;
    }
    if (strncmp(PMD_MGMT_BASELINE, name, sizeof(PMD_MGMT_BASELINE)) == 0) {
        baseline_enabled = true;
        return 0;
    }
    /* unknown PMD power management mode */
    return -1;
}
 
static int
parse_ep_config(const char *q_arg)
{
    char s[256];
    const char *p = q_arg;
    char *end;
    int  num_arg;
 
    char *str_fld[3];
 
    int training_flag;
    int med_edpi;
    int hgh_edpi;
 
    ep_med_edpi = EMPTY_POLL_MED_THRESHOLD;
    ep_hgh_edpi = EMPTY_POLL_HGH_THRESHOLD;
 
    strlcpy(s, p, sizeof(s));
 
    num_arg = rte_strsplit(s, sizeof(s), str_fld, 3, ',');
 
    empty_poll_train = false;
 
    if (num_arg == 0)
        return 0;
 
    if (num_arg == 3) {
 
        training_flag = strtoul(str_fld[0], &end, 0);
        med_edpi = strtoul(str_fld[1], &end, 0);
        hgh_edpi = strtoul(str_fld[2], &end, 0);
 
        if (training_flag == 1)
            empty_poll_train = true;
 
        if (med_edpi > 0)
            ep_med_edpi = med_edpi;
 
        if (hgh_edpi > 0)
            ep_hgh_edpi = hgh_edpi;
 
    } else {
 
        return -1;
    }
 
    return 0;
 
}
#define CMD_LINE_OPT_PARSE_PTYPE "parse-ptype"
#define CMD_LINE_OPT_LEGACY "legacy"
#define CMD_LINE_OPT_EMPTY_POLL "empty-poll"
#define CMD_LINE_OPT_INTERRUPT_ONLY "interrupt-only"
#define CMD_LINE_OPT_TELEMETRY "telemetry"
#define CMD_LINE_OPT_PMD_MGMT "pmd-mgmt"
#define CMD_LINE_OPT_MAX_PKT_LEN "max-pkt-len"
 
/* Parse the argument given in the command line of the application */
static int
parse_args(int argc, char **argv)
{
    int opt, ret;
    char **argvopt;
    int option_index;
    uint32_t limit;
    char *prgname = argv[0];
    static struct option lgopts[] = {
        {"config", 1, 0, 0},
        {"perf-config", 1, 0, 0},
        {"high-perf-cores", 1, 0, 0},
        {"no-numa", 0, 0, 0},
        {CMD_LINE_OPT_MAX_PKT_LEN, 1, 0, 0},
        {CMD_LINE_OPT_EMPTY_POLL, 1, 0, 0},
        {CMD_LINE_OPT_PARSE_PTYPE, 0, 0, 0},
        {CMD_LINE_OPT_LEGACY, 0, 0, 0},
        {CMD_LINE_OPT_TELEMETRY, 0, 0, 0},
        {CMD_LINE_OPT_INTERRUPT_ONLY, 0, 0, 0},
        {CMD_LINE_OPT_PMD_MGMT, 1, 0, 0},
        {NULL, 0, 0, 0}
    };
 
    argvopt = argv;
 
    while ((opt = getopt_long(argc, argvopt, "p:l:m:h:P",
                lgopts, &option_index)) != EOF) {
 
        switch (opt) {
        /* portmask */
        case 'p':
            enabled_port_mask = parse_portmask(optarg);
            if (enabled_port_mask == 0) {
                printf("invalid portmask\n");
                print_usage(prgname);
                return -1;
            }
            break;
        case 'P':
            printf("Promiscuous mode selected\n");
            promiscuous_on = 1;
            break;
        case 'l':
            limit = parse_max_pkt_len(optarg);
            freq_tlb[LOW] = limit;
            break;
        case 'm':
            limit = parse_max_pkt_len(optarg);
            freq_tlb[MED] = limit;
            break;
        case 'h':
            limit = parse_max_pkt_len(optarg);
            freq_tlb[HGH] = limit;
            break;
        /* long options */
        case 0:
            if (!strncmp(lgopts[option_index].name, "config", 6)) {
                ret = parse_config(optarg);
                if (ret) {
                    printf("invalid config\n");
                    print_usage(prgname);
                    return -1;
                }
            }
 
            if (!strncmp(lgopts[option_index].name,
                    "perf-config", 11)) {
                ret = parse_perf_config(optarg);
                if (ret) {
                    printf("invalid perf-config\n");
                    print_usage(prgname);
                    return -1;
                }
            }
 
            if (!strncmp(lgopts[option_index].name,
                    "high-perf-cores", 15)) {
                ret = parse_perf_core_list(optarg);
                if (ret) {
                    printf("invalid high-perf-cores\n");
                    print_usage(prgname);
                    return -1;
                }
            }
 
            if (!strncmp(lgopts[option_index].name,
                        "no-numa", 7)) {
                printf("numa is disabled \n");
                numa_on = 0;
            }
 
            if (!strncmp(lgopts[option_index].name,
                    CMD_LINE_OPT_LEGACY,
                    sizeof(CMD_LINE_OPT_LEGACY))) {
                if (app_mode != APP_MODE_DEFAULT) {
                    printf(" legacy mode is mutually exclusive with other modes\n");
                    return -1;
                }
                app_mode = APP_MODE_LEGACY;
                printf("legacy mode is enabled\n");
            }
 
            if (!strncmp(lgopts[option_index].name,
                    CMD_LINE_OPT_EMPTY_POLL, 10)) {
                if (app_mode != APP_MODE_DEFAULT) {
                    printf(" empty-poll mode is mutually exclusive with other modes\n");
                    return -1;
                }
                app_mode = APP_MODE_EMPTY_POLL;
                ret = parse_ep_config(optarg);
 
                if (ret) {
                    printf("invalid empty poll config\n");
                    print_usage(prgname);
                    return -1;
                }
                printf("empty-poll is enabled\n");
            }
 
            if (!strncmp(lgopts[option_index].name,
                    CMD_LINE_OPT_TELEMETRY,
                    sizeof(CMD_LINE_OPT_TELEMETRY))) {
                if (app_mode != APP_MODE_DEFAULT) {
                    printf(" telemetry mode is mutually exclusive with other modes\n");
                    return -1;
                }
                app_mode = APP_MODE_TELEMETRY;
                printf("telemetry mode is enabled\n");
            }
 
            if (!strncmp(lgopts[option_index].name,
                    CMD_LINE_OPT_PMD_MGMT,
                    sizeof(CMD_LINE_OPT_PMD_MGMT))) {
                if (app_mode != APP_MODE_DEFAULT) {
                    printf(" power mgmt mode is mutually exclusive with other modes\n");
                    return -1;
                }
                if (parse_pmd_mgmt_config(optarg) < 0) {
                    printf(" Invalid PMD power management mode: %s\n",
                            optarg);
                    return -1;
                }
                app_mode = APP_MODE_PMD_MGMT;
                printf("PMD power mgmt mode is enabled\n");
            }
            if (!strncmp(lgopts[option_index].name,
                    CMD_LINE_OPT_INTERRUPT_ONLY,
                    sizeof(CMD_LINE_OPT_INTERRUPT_ONLY))) {
                if (app_mode != APP_MODE_DEFAULT) {
                    printf(" interrupt-only mode is mutually exclusive with other modes\n");
                    return -1;
                }
                app_mode = APP_MODE_INTERRUPT;
                printf("interrupt-only mode is enabled\n");
            }
 
            if (!strncmp(lgopts[option_index].name,
                    CMD_LINE_OPT_MAX_PKT_LEN,
                    sizeof(CMD_LINE_OPT_MAX_PKT_LEN))) {
                printf("Custom frame size is configured\n");
                max_pkt_len = parse_max_pkt_len(optarg);
            }
 
            if (!strncmp(lgopts[option_index].name,
                     CMD_LINE_OPT_PARSE_PTYPE,
                     sizeof(CMD_LINE_OPT_PARSE_PTYPE))) {
                printf("soft parse-ptype is enabled\n");
                parse_ptype = 1;
            }
 
            break;
 
        default:
            print_usage(prgname);
            return -1;
        }
    }
 
    if (optind >= 0)
        argv[optind-1] = prgname;
 
    ret = optind-1;
    optind = 1; /* reset getopt lib */
    return ret;
}
 
static void
print_ethaddr(const char *name, const struct rte_ether_addr *eth_addr)
{
    char buf[RTE_ETHER_ADDR_FMT_SIZE];
    rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
    printf("%s%s", name, buf);
}
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
setup_hash(int socketid)
{
    struct rte_hash_parameters ipv4_l3fwd_hash_params = {
        .name = NULL,
        .entries = L3FWD_HASH_ENTRIES,
        .key_len = sizeof(struct ipv4_5tuple),
        .hash_func = DEFAULT_HASH_FUNC,
        .hash_func_init_val = 0,
    };
 
    struct rte_hash_parameters ipv6_l3fwd_hash_params = {
        .name = NULL,
        .entries = L3FWD_HASH_ENTRIES,
        .key_len = sizeof(struct ipv6_5tuple),
        .hash_func = DEFAULT_HASH_FUNC,
        .hash_func_init_val = 0,
    };
 
    unsigned i;
    int ret;
    char s[64];
 
    /* create ipv4 hash */
    snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
    ipv4_l3fwd_hash_params.name = s;
    ipv4_l3fwd_hash_params.socket_id = socketid;
    ipv4_l3fwd_lookup_struct[socketid] =
        rte_hash_create(&ipv4_l3fwd_hash_params);
    if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
        rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
                "socket %d\n", socketid);
 
    /* create ipv6 hash */
    snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
    ipv6_l3fwd_hash_params.name = s;
    ipv6_l3fwd_hash_params.socket_id = socketid;
    ipv6_l3fwd_lookup_struct[socketid] =
        rte_hash_create(&ipv6_l3fwd_hash_params);
    if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
        rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
                "socket %d\n", socketid);
 
 
    /* populate the ipv4 hash */
    for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
        ret = rte_hash_add_key (ipv4_l3fwd_lookup_struct[socketid],
                (void *) &ipv4_l3fwd_route_array[i].key);
        if (ret < 0) {
            rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
                "l3fwd hash on socket %d\n", i, socketid);
        }
        ipv4_l3fwd_out_if[ret] = ipv4_l3fwd_route_array[i].if_out;
        printf("Hash: Adding key\n");
        print_ipv4_key(ipv4_l3fwd_route_array[i].key);
    }
 
    /* populate the ipv6 hash */
    for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
        ret = rte_hash_add_key (ipv6_l3fwd_lookup_struct[socketid],
                (void *) &ipv6_l3fwd_route_array[i].key);
        if (ret < 0) {
            rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
                "l3fwd hash on socket %d\n", i, socketid);
        }
        ipv6_l3fwd_out_if[ret] = ipv6_l3fwd_route_array[i].if_out;
        printf("Hash: Adding key\n");
        print_ipv6_key(ipv6_l3fwd_route_array[i].key);
    }
}
#endif
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static void
setup_lpm(int socketid)
{
    unsigned i;
    int ret;
    char s[64];
 
    /* create the LPM table */
    struct rte_lpm_config lpm_ipv4_config;
 
    lpm_ipv4_config.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
    lpm_ipv4_config.number_tbl8s = 256;
    lpm_ipv4_config.flags = 0;
 
    snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
    ipv4_l3fwd_lookup_struct[socketid] =
            rte_lpm_create(s, socketid, &lpm_ipv4_config);
    if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
        rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
                " on socket %d\n", socketid);
 
    /* populate the LPM table */
    for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
        ret = rte_lpm_add(ipv4_l3fwd_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 LPM table on socket %d\n",
                i, socketid);
        }
 
        printf("LPM: Adding route 0x%08x / %d (%d)\n",
            (unsigned)ipv4_l3fwd_route_array[i].ip,
            ipv4_l3fwd_route_array[i].depth,
            ipv4_l3fwd_route_array[i].if_out);
    }
}
#endif
 
static int
init_mem(unsigned nb_mbuf)
{
    struct lcore_conf *qconf;
    int socketid;
    unsigned lcore_id;
    char s[64];
 
    for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
        if (rte_lcore_is_enabled(lcore_id) == 0)
            continue;
 
        if (numa_on)
            socketid = rte_lcore_to_socket_id(lcore_id);
        else
            socketid = 0;
 
        if (socketid >= NB_SOCKETS) {
            rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is "
                    "out of range %d\n", socketid,
                        lcore_id, NB_SOCKETS);
        }
        if (pktmbuf_pool[socketid] == NULL) {
            snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
            pktmbuf_pool[socketid] =
                rte_pktmbuf_pool_create(s, nb_mbuf,
                    MEMPOOL_CACHE_SIZE, 0,
                    RTE_MBUF_DEFAULT_BUF_SIZE,
                    socketid);
            if (pktmbuf_pool[socketid] == NULL)
                rte_exit(EXIT_FAILURE,
                    "Cannot init mbuf pool on socket %d\n",
                                socketid);
            else
                printf("Allocated mbuf pool on socket %d\n",
                                socketid);
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
            setup_lpm(socketid);
#else
            setup_hash(socketid);
#endif
        }
        qconf = &lcore_conf[lcore_id];
        qconf->ipv4_lookup_struct = ipv4_l3fwd_lookup_struct[socketid];
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
        qconf->ipv6_lookup_struct = ipv6_l3fwd_lookup_struct[socketid];
#endif
    }
    return 0;
}
 
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
    uint8_t count, all_ports_up, print_flag = 0;
    uint16_t portid;
    struct rte_eth_link link;
    int ret;
    char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
 
    printf("\nChecking link status");
    fflush(stdout);
    for (count = 0; count <= MAX_CHECK_TIME; count++) {
        all_ports_up = 1;
        RTE_ETH_FOREACH_DEV(portid) {
            if ((port_mask & (1 << portid)) == 0)
                continue;
            memset(&link, 0, sizeof(link));
            ret = rte_eth_link_get_nowait(portid, &link);
            if (ret < 0) {
                all_ports_up = 0;
                if (print_flag == 1)
                    printf("Port %u link get failed: %s\n",
                        portid, rte_strerror(-ret));
                continue;
            }
            /* print link status if flag set */
            if (print_flag == 1) {
                rte_eth_link_to_str(link_status_text,
                    sizeof(link_status_text), &link);
                printf("Port %d %s\n", portid,
                       link_status_text);
                continue;
            }
            /* clear all_ports_up flag if any link down */
            if (link.link_status == RTE_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");
        }
    }
}
 
static int check_ptype(uint16_t portid)
{
    int i, ret;
    int ptype_l3_ipv4 = 0;
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
    int ptype_l3_ipv6 = 0;
#endif
    uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
 
    ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
    if (ret <= 0)
        return 0;
 
    uint32_t ptypes[ret];
 
    ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
    for (i = 0; i < ret; ++i) {
        if (ptypes[i] & RTE_PTYPE_L3_IPV4)
            ptype_l3_ipv4 = 1;
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
        if (ptypes[i] & RTE_PTYPE_L3_IPV6)
            ptype_l3_ipv6 = 1;
#endif
    }
 
    if (ptype_l3_ipv4 == 0)
        printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
    if (ptype_l3_ipv6 == 0)
        printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
#endif
 
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
    if (ptype_l3_ipv4)
#else /* APP_LOOKUP_EXACT_MATCH */
    if (ptype_l3_ipv4 && ptype_l3_ipv6)
#endif
        return 1;
 
    return 0;
 
}
 
static int
init_power_library(void)
{
    enum power_management_env env;
    unsigned int lcore_id;
    int ret = 0;
 
    RTE_LCORE_FOREACH(lcore_id) {
        /* init power management library */
        ret = rte_power_init(lcore_id);
        if (ret) {
            RTE_LOG(ERR, POWER,
                "Library initialization failed on core %u\n",
                lcore_id);
            return ret;
        }
        /* we're not supporting the VM channel mode */
        env = rte_power_get_env();
        if (env != PM_ENV_ACPI_CPUFREQ &&
                env != PM_ENV_PSTATE_CPUFREQ) {
            RTE_LOG(ERR, POWER,
                "Only ACPI and PSTATE mode are supported\n");
            return -1;
        }
    }
    return ret;
}
 
static int
deinit_power_library(void)
{
    unsigned int lcore_id;
    int ret = 0;
 
    RTE_LCORE_FOREACH(lcore_id) {
        /* deinit power management library */
        ret = rte_power_exit(lcore_id);
        if (ret) {
            RTE_LOG(ERR, POWER,
                "Library deinitialization failed on core %u\n",
                lcore_id);
            return ret;
        }
    }
    return ret;
}
 
static void
get_current_stat_values(uint64_t *values)
{
    unsigned int lcore_id = rte_lcore_id();
    struct lcore_conf *qconf;
    uint64_t app_eps = 0, app_fps = 0, app_br = 0;
    uint64_t count = 0;
 
    RTE_LCORE_FOREACH_WORKER(lcore_id) {
        qconf = &lcore_conf[lcore_id];
        if (qconf->n_rx_queue == 0)
            continue;
        count++;
        rte_spinlock_lock(&stats[lcore_id].telemetry_lock);
        app_eps += stats[lcore_id].ep_nep[1];
        app_fps += stats[lcore_id].fp_nfp[1];
        app_br += stats[lcore_id].br;
        rte_spinlock_unlock(&stats[lcore_id].telemetry_lock);
    }
 
    if (count > 0) {
        values[0] = app_eps/count;
        values[1] = app_fps/count;
        values[2] = app_br/count;
    } else
        memset(values, 0, sizeof(uint64_t) * NUM_TELSTATS);
 
}
 
static void
update_telemetry(__rte_unused struct rte_timer *tim,
        __rte_unused void *arg)
{
    int ret;
    uint64_t values[NUM_TELSTATS] = {0};
 
    get_current_stat_values(values);
    ret = rte_metrics_update_values(RTE_METRICS_GLOBAL, telstats_index,
                    values, RTE_DIM(values));
    if (ret < 0)
        RTE_LOG(WARNING, POWER, "failed to update metrics\n");
}
 
static int
handle_app_stats(const char *cmd __rte_unused,
        const char *params __rte_unused,
        struct rte_tel_data *d)
{
    uint64_t values[NUM_TELSTATS] = {0};
    uint32_t i;
 
    rte_tel_data_start_dict(d);
    get_current_stat_values(values);
    for (i = 0; i < NUM_TELSTATS; i++)
        rte_tel_data_add_dict_u64(d, telstats_strings[i].name,
                values[i]);
    return 0;
}
 
static void
telemetry_setup_timer(void)
{
    int lcore_id = rte_lcore_id();
    uint64_t hz = rte_get_timer_hz();
    uint64_t ticks;
 
    ticks = hz / TELEMETRY_INTERVALS_PER_SEC;
    rte_timer_reset_sync(&telemetry_timer,
            ticks,
            PERIODICAL,
            lcore_id,
            update_telemetry,
            NULL);
}
static void
empty_poll_setup_timer(void)
{
    int lcore_id = rte_lcore_id();
    uint64_t hz = rte_get_timer_hz();
 
    struct  ep_params *ep_ptr = ep_params;
 
    ep_ptr->interval_ticks = hz / INTERVALS_PER_SECOND;
 
    rte_timer_reset_sync(&ep_ptr->timer0,
            ep_ptr->interval_ticks,
            PERIODICAL,
            lcore_id,
            rte_empty_poll_detection,
            (void *)ep_ptr);
 
}
static int
launch_timer(unsigned int lcore_id)
{
    int64_t prev_tsc = 0, cur_tsc, diff_tsc, cycles_10ms;
 
    RTE_SET_USED(lcore_id);
 
 
    if (rte_get_main_lcore() != lcore_id) {
        rte_panic("timer on lcore:%d which is not main core:%d\n",
                lcore_id,
                rte_get_main_lcore());
    }
 
    RTE_LOG(INFO, POWER, "Bring up the Timer\n");
 
    if (app_mode == APP_MODE_EMPTY_POLL)
        empty_poll_setup_timer();
    else
        telemetry_setup_timer();
 
    cycles_10ms = rte_get_timer_hz() / 100;
 
    while (!is_done()) {
        cur_tsc = rte_rdtsc();
        diff_tsc = cur_tsc - prev_tsc;
        if (diff_tsc > cycles_10ms) {
            rte_timer_manage();
            prev_tsc = cur_tsc;
            cycles_10ms = rte_get_timer_hz() / 100;
        }
    }
 
    RTE_LOG(INFO, POWER, "Timer_subsystem is done\n");
 
    return 0;
}
 
static int
autodetect_mode(void)
{
    RTE_LOG(NOTICE, L3FWD_POWER, "Operating mode not specified, probing frequency scaling support...\n");
 
    /*
     * Empty poll and telemetry modes have to be specifically requested to
     * be enabled, but we can auto-detect between interrupt mode with or
     * without frequency scaling. Both ACPI and pstate can be used.
     */
    if (rte_power_check_env_supported(PM_ENV_ACPI_CPUFREQ))
        return APP_MODE_LEGACY;
    if (rte_power_check_env_supported(PM_ENV_PSTATE_CPUFREQ))
        return APP_MODE_LEGACY;
 
    RTE_LOG(NOTICE, L3FWD_POWER, "Frequency scaling not supported, selecting interrupt-only mode\n");
 
    return APP_MODE_INTERRUPT;
}
 
static const char *
mode_to_str(enum appmode mode)
{
    switch (mode) {
    case APP_MODE_LEGACY:
        return "legacy";
    case APP_MODE_EMPTY_POLL:
        return "empty poll";
    case APP_MODE_TELEMETRY:
        return "telemetry";
    case APP_MODE_INTERRUPT:
        return "interrupt-only";
    case APP_MODE_PMD_MGMT:
        return "pmd mgmt";
    default:
        return "invalid";
    }
}
 
static uint32_t
eth_dev_get_overhead_len(uint32_t max_rx_pktlen, uint16_t max_mtu)
{
    uint32_t overhead_len;
 
    if (max_mtu != UINT16_MAX && max_rx_pktlen > max_mtu)
        overhead_len = max_rx_pktlen - max_mtu;
    else
        overhead_len = RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
 
    return overhead_len;
}
 
static int
config_port_max_pkt_len(struct rte_eth_conf *conf,
        struct rte_eth_dev_info *dev_info)
{
    uint32_t overhead_len;
 
    if (max_pkt_len == 0)
        return 0;
 
    if (max_pkt_len < RTE_ETHER_MIN_LEN || max_pkt_len > MAX_JUMBO_PKT_LEN)
        return -1;
 
    overhead_len = eth_dev_get_overhead_len(dev_info->max_rx_pktlen,
            dev_info->max_mtu);
    conf->rxmode.mtu = max_pkt_len - overhead_len;
 
    if (conf->rxmode.mtu > RTE_ETHER_MTU)
        conf->txmode.offloads |= RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
 
    return 0;
}
 
/* Power library initialized in the main routine. 8< */
int
main(int argc, char **argv)
{
    struct lcore_conf *qconf;
    struct rte_eth_dev_info dev_info;
    struct rte_eth_txconf *txconf;
    int ret;
    uint16_t nb_ports;
    uint16_t queueid;
    unsigned lcore_id;
    uint64_t hz;
    uint32_t n_tx_queue, nb_lcores;
    uint32_t dev_rxq_num, dev_txq_num;
    uint8_t nb_rx_queue, queue, socketid;
    uint16_t portid;
    const char *ptr_strings[NUM_TELSTATS];
 
    /* init EAL */
    ret = rte_eal_init(argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
    argc -= ret;
    argv += ret;
 
    /* catch SIGINT and restore cpufreq governor to ondemand */
    signal(SIGINT, signal_exit_now);
 
    /* init RTE timer library to be used late */
    rte_timer_subsystem_init();
 
    /* if we're running pmd-mgmt mode, don't default to baseline mode */
    baseline_enabled = false;
 
    /* parse application arguments (after the EAL ones) */
    ret = parse_args(argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
 
    if (app_mode == APP_MODE_DEFAULT)
        app_mode = autodetect_mode();
 
    RTE_LOG(INFO, L3FWD_POWER, "Selected operation mode: %s\n",
            mode_to_str(app_mode));
 
    /* only legacy and empty poll mode rely on power library */
    if ((app_mode == APP_MODE_LEGACY || app_mode == APP_MODE_EMPTY_POLL) &&
            init_power_library())
        rte_exit(EXIT_FAILURE, "init_power_library failed\n");
 
    if (update_lcore_params() < 0)
        rte_exit(EXIT_FAILURE, "update_lcore_params failed\n");
 
    if (check_lcore_params() < 0)
        rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
 
    ret = init_lcore_rx_queues();
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
 
    nb_ports = rte_eth_dev_count_avail();
 
    if (check_port_config() < 0)
        rte_exit(EXIT_FAILURE, "check_port_config failed\n");
 
    nb_lcores = rte_lcore_count();
 
    /* initialize all ports */
    RTE_ETH_FOREACH_DEV(portid) {
        struct rte_eth_conf local_port_conf = port_conf;
        /* not all app modes need interrupts */
        bool need_intr = app_mode == APP_MODE_LEGACY ||
                app_mode == APP_MODE_INTERRUPT;
 
        /* skip ports that are not enabled */
        if ((enabled_port_mask & (1 << portid)) == 0) {
            printf("\nSkipping disabled port %d\n", portid);
            continue;
        }
 
        /* init port */
        printf("Initializing port %d ... ", portid );
        fflush(stdout);
 
        ret = rte_eth_dev_info_get(portid, &dev_info);
        if (ret != 0)
            rte_exit(EXIT_FAILURE,
                "Error during getting device (port %u) info: %s\n",
                portid, strerror(-ret));
 
        dev_rxq_num = dev_info.max_rx_queues;
        dev_txq_num = dev_info.max_tx_queues;
 
        nb_rx_queue = get_port_n_rx_queues(portid);
        if (nb_rx_queue > dev_rxq_num)
            rte_exit(EXIT_FAILURE,
                "Cannot configure not existed rxq: "
                "port=%d\n", portid);
 
        n_tx_queue = nb_lcores;
        if (n_tx_queue > dev_txq_num)
            n_tx_queue = dev_txq_num;
        printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
            nb_rx_queue, (unsigned)n_tx_queue );
        /* If number of Rx queue is 0, no need to enable Rx interrupt */
        if (nb_rx_queue == 0)
            need_intr = false;
 
        if (need_intr)
            local_port_conf.intr_conf.rxq = 1;
 
        ret = rte_eth_dev_info_get(portid, &dev_info);
        if (ret != 0)
            rte_exit(EXIT_FAILURE,
                "Error during getting device (port %u) info: %s\n",
                portid, strerror(-ret));
 
        ret = config_port_max_pkt_len(&local_port_conf, &dev_info);
        if (ret != 0)
            rte_exit(EXIT_FAILURE,
                "Invalid max packet length: %u (port %u)\n",
                max_pkt_len, portid);
 
        if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
            local_port_conf.txmode.offloads |=
                RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
 
        local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
            dev_info.flow_type_rss_offloads;
        if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
                port_conf.rx_adv_conf.rss_conf.rss_hf) {
            printf("Port %u modified RSS hash function based on hardware support,"
                "requested:%#"PRIx64" configured:%#"PRIx64"\n",
                portid,
                port_conf.rx_adv_conf.rss_conf.rss_hf,
                local_port_conf.rx_adv_conf.rss_conf.rss_hf);
        }
 
        if (local_port_conf.rx_adv_conf.rss_conf.rss_hf == 0)
            local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
        local_port_conf.rxmode.offloads &= dev_info.rx_offload_capa;
        port_conf.rxmode.offloads = local_port_conf.rxmode.offloads;
 
        ret = rte_eth_dev_configure(portid, nb_rx_queue,
                    (uint16_t)n_tx_queue, &local_port_conf);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "Cannot configure device: "
                    "err=%d, port=%d\n", ret, portid);
 
        ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
                               &nb_txd);
        if (ret < 0)
            rte_exit(EXIT_FAILURE,
                 "Cannot adjust number of descriptors: err=%d, port=%d\n",
                 ret, portid);
 
        ret = rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
        if (ret < 0)
            rte_exit(EXIT_FAILURE,
                 "Cannot get MAC address: err=%d, port=%d\n",
                 ret, portid);
 
        print_ethaddr(" Address:", &ports_eth_addr[portid]);
        printf(", ");
 
        /* init memory */
        ret = init_mem(NB_MBUF);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "init_mem failed\n");
 
        for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
            if (rte_lcore_is_enabled(lcore_id) == 0)
                continue;
 
            /* Initialize TX buffers */
            qconf = &lcore_conf[lcore_id];
            qconf->tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
                RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
                rte_eth_dev_socket_id(portid));
            if (qconf->tx_buffer[portid] == NULL)
                rte_exit(EXIT_FAILURE, "Can't allocate tx buffer for port %u\n",
                         portid);
 
            rte_eth_tx_buffer_init(qconf->tx_buffer[portid], MAX_PKT_BURST);
        }
 
        /* init one TX queue per couple (lcore,port) */
        queueid = 0;
        for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
            if (rte_lcore_is_enabled(lcore_id) == 0)
                continue;
 
            if (queueid >= dev_txq_num)
                continue;
 
            if (numa_on)
                socketid = \
                (uint8_t)rte_lcore_to_socket_id(lcore_id);
            else
                socketid = 0;
 
            printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
            fflush(stdout);
 
            txconf = &dev_info.default_txconf;
            txconf->offloads = local_port_conf.txmode.offloads;
            ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
                             socketid, txconf);
            if (ret < 0)
                rte_exit(EXIT_FAILURE,
                    "rte_eth_tx_queue_setup: err=%d, "
                        "port=%d\n", ret, portid);
 
            qconf = &lcore_conf[lcore_id];
            qconf->tx_queue_id[portid] = queueid;
            queueid++;
 
            qconf->tx_port_id[qconf->n_tx_port] = portid;
            qconf->n_tx_port++;
        }
        printf("\n");
    }
 
    for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
        if (rte_lcore_is_enabled(lcore_id) == 0)
            continue;
 
        if (app_mode == APP_MODE_LEGACY) {
            /* init timer structures for each enabled lcore */
            rte_timer_init(&power_timers[lcore_id]);
            hz = rte_get_timer_hz();
            rte_timer_reset(&power_timers[lcore_id],
                    hz/TIMER_NUMBER_PER_SECOND,
                    SINGLE, lcore_id,
                    power_timer_cb, NULL);
        }
        qconf = &lcore_conf[lcore_id];
        printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
        fflush(stdout);
 
        /* init RX queues */
        for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
            struct rte_eth_rxconf rxq_conf;
 
            portid = qconf->rx_queue_list[queue].port_id;
            queueid = qconf->rx_queue_list[queue].queue_id;
 
            if (numa_on)
                socketid = \
                (uint8_t)rte_lcore_to_socket_id(lcore_id);
            else
                socketid = 0;
 
            printf("rxq=%d,%d,%d ", portid, queueid, socketid);
            fflush(stdout);
 
            ret = rte_eth_dev_info_get(portid, &dev_info);
            if (ret != 0)
                rte_exit(EXIT_FAILURE,
                    "Error during getting device (port %u) info: %s\n",
                    portid, strerror(-ret));
 
            rxq_conf = dev_info.default_rxconf;
            rxq_conf.offloads = port_conf.rxmode.offloads;
            ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
                socketid, &rxq_conf,
                pktmbuf_pool[socketid]);
            if (ret < 0)
                rte_exit(EXIT_FAILURE,
                    "rte_eth_rx_queue_setup: err=%d, "
                        "port=%d\n", ret, portid);
 
            if (parse_ptype) {
                if (add_cb_parse_ptype(portid, queueid) < 0)
                    rte_exit(EXIT_FAILURE,
                         "Fail to add ptype cb\n");
            }
 
            if (app_mode == APP_MODE_PMD_MGMT && !baseline_enabled) {
                ret = rte_power_ethdev_pmgmt_queue_enable(
                        lcore_id, portid, queueid,
                        pmgmt_type);
                if (ret < 0)
                    rte_exit(EXIT_FAILURE,
                        "rte_power_ethdev_pmgmt_queue_enable: err=%d, port=%d\n",
                            ret, portid);
            }
        }
    }
    /* >8 End of power library initialization. */
 
    printf("\n");
 
    /* start ports */
    RTE_ETH_FOREACH_DEV(portid) {
        if ((enabled_port_mask & (1 << portid)) == 0) {
            continue;
        }
        /* Start device */
        ret = rte_eth_dev_start(portid);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, "
                        "port=%d\n", ret, portid);
        /*
         * If enabled, put device in promiscuous mode.
         * This allows IO forwarding mode to forward packets
         * to itself through 2 cross-connected  ports of the
         * target machine.
         */
        if (promiscuous_on) {
            ret = rte_eth_promiscuous_enable(portid);
            if (ret != 0)
                rte_exit(EXIT_FAILURE,
                    "rte_eth_promiscuous_enable: err=%s, port=%u\n",
                    rte_strerror(-ret), portid);
        }
        /* initialize spinlock for each port */
        rte_spinlock_init(&(locks[portid]));
 
        if (!parse_ptype)
            if (!check_ptype(portid))
                rte_exit(EXIT_FAILURE,
                    "PMD can not provide needed ptypes\n");
    }
 
    check_all_ports_link_status(enabled_port_mask);
 
    if (app_mode == APP_MODE_EMPTY_POLL) {
 
        if (empty_poll_train) {
            policy.state = TRAINING;
        } else {
            policy.state = MED_NORMAL;
            policy.med_base_edpi = ep_med_edpi;
            policy.hgh_base_edpi = ep_hgh_edpi;
        }
 
        ret = rte_power_empty_poll_stat_init(&ep_params,
                freq_tlb,
                &policy);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "empty poll init failed");
    }
 
 
    /* launch per-lcore init on every lcore */
    if (app_mode == APP_MODE_LEGACY) {
        rte_eal_mp_remote_launch(main_legacy_loop, NULL, CALL_MAIN);
    } else if (app_mode == APP_MODE_EMPTY_POLL) {
        empty_poll_stop = false;
        rte_eal_mp_remote_launch(main_empty_poll_loop, NULL,
                SKIP_MAIN);
    } else if (app_mode == APP_MODE_TELEMETRY) {
        unsigned int i;
 
        /* Init metrics library */
        rte_metrics_init(rte_socket_id());
        for (i = 0; i < NUM_TELSTATS; i++)
            ptr_strings[i] = telstats_strings[i].name;
 
        ret = rte_metrics_reg_names(ptr_strings, NUM_TELSTATS);
        if (ret >= 0)
            telstats_index = ret;
        else
            rte_exit(EXIT_FAILURE, "failed to register metrics names");
 
        RTE_LCORE_FOREACH_WORKER(lcore_id) {
            rte_spinlock_init(&stats[lcore_id].telemetry_lock);
        }
        rte_timer_init(&telemetry_timer);
        rte_telemetry_register_cmd("/l3fwd-power/stats",
                handle_app_stats,
                "Returns global power stats. Parameters: None");
        rte_eal_mp_remote_launch(main_telemetry_loop, NULL,
                        SKIP_MAIN);
    } else if (app_mode == APP_MODE_INTERRUPT) {
        rte_eal_mp_remote_launch(main_intr_loop, NULL, CALL_MAIN);
    } else if (app_mode == APP_MODE_PMD_MGMT) {
        /* reuse telemetry loop for PMD power management mode */
        rte_eal_mp_remote_launch(main_telemetry_loop, NULL, CALL_MAIN);
    }
 
    if (app_mode == APP_MODE_EMPTY_POLL || app_mode == APP_MODE_TELEMETRY)
        launch_timer(rte_lcore_id());
 
    RTE_LCORE_FOREACH_WORKER(lcore_id) {
        if (rte_eal_wait_lcore(lcore_id) < 0)
            return -1;
    }
 
    if (app_mode == APP_MODE_PMD_MGMT) {
        for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
            if (rte_lcore_is_enabled(lcore_id) == 0)
                continue;
            qconf = &lcore_conf[lcore_id];
            for (queue = 0; queue < qconf->n_rx_queue; ++queue) {
                portid = qconf->rx_queue_list[queue].port_id;
                queueid = qconf->rx_queue_list[queue].queue_id;
 
                rte_power_ethdev_pmgmt_queue_disable(lcore_id,
                        portid, queueid);
            }
        }
    }
 
    RTE_ETH_FOREACH_DEV(portid)
    {
        if ((enabled_port_mask & (1 << portid)) == 0)
            continue;
 
        ret = rte_eth_dev_stop(portid);
        if (ret != 0)
            RTE_LOG(ERR, L3FWD_POWER, "rte_eth_dev_stop: err=%d, port=%u\n",
                ret, portid);
 
        rte_eth_dev_close(portid);
    }
 
    if (app_mode == APP_MODE_EMPTY_POLL)
        rte_power_empty_poll_stat_free();
 
    if ((app_mode == APP_MODE_LEGACY || app_mode == APP_MODE_EMPTY_POLL) &&
            deinit_power_library())
        rte_exit(EXIT_FAILURE, "deinit_power_library failed\n");
 
    if (rte_eal_cleanup() < 0)
        RTE_LOG(ERR, L3FWD_POWER, "EAL cleanup failed\n");
 
    return 0;
}