examples/vm_power_manager/main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <sys/epoll.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>

#include <sys/queue.h>

#include <rte_common.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_log.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_ethdev.h>
#include <getopt.h>
#include <rte_cycles.h>
#include <rte_debug.h>

#include "channel_manager.h"
#include "channel_monitor.h"
#include "power_manager.h"
#include "vm_power_cli.h"
#include "oob_monitor.h"
#include "parse.h"
#ifdef RTE_NET_IXGBE
#include <rte_pmd_ixgbe.h>
#endif
#ifdef RTE_NET_I40E
#include <rte_pmd_i40e.h>
#endif
#ifdef RTE_NET_BNXT
#include <rte_pmd_bnxt.h>
#endif

#define RX_RING_SIZE 1024
#define TX_RING_SIZE 1024

#define NUM_MBUFS 8191
#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 32

static uint32_t enabled_port_mask;
static volatile bool force_quit;

static inline int
port_init(uint16_t port, struct rte_mempool *mbuf_pool)
{
    struct rte_eth_conf port_conf;
    const uint16_t rx_rings = 1, tx_rings = 1;
    int retval;
    uint16_t q;
    struct rte_eth_dev_info dev_info;
    struct rte_eth_txconf txq_conf;

    if (!rte_eth_dev_is_valid_port(port))
        return -1;

    memset(&port_conf, 0, sizeof(struct rte_eth_conf));

    retval = rte_eth_dev_info_get(port, &dev_info);
    if (retval != 0) {
        printf("Error during getting device (port %u) info: %s\n",
                port, strerror(-retval));
        return retval;
    }

    if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
        port_conf.txmode.offloads |=
            RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;

    /* Configure the Ethernet device. */
    retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
    if (retval != 0)
        return retval;

    /* Allocate and set up 1 RX queue per Ethernet port. */
    for (q = 0; q < rx_rings; q++) {
        retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
                rte_eth_dev_socket_id(port), NULL, mbuf_pool);
        if (retval < 0)
            return retval;
    }

    txq_conf = dev_info.default_txconf;
    txq_conf.offloads = port_conf.txmode.offloads;
    /* Allocate and set up 1 TX queue per Ethernet port. */
    for (q = 0; q < tx_rings; q++) {
        retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
                rte_eth_dev_socket_id(port), &txq_conf);
        if (retval < 0)
            return retval;
    }

    /* Start the Ethernet port. */
    retval = rte_eth_dev_start(port);
    if (retval < 0)
        return retval;

    /* Display the port MAC address. */
    struct rte_ether_addr addr;
    retval = rte_eth_macaddr_get(port, &addr);
    if (retval != 0) {
        printf("Failed to get device (port %u) MAC address: %s\n",
                port, rte_strerror(-retval));
        return retval;
    }

    printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
               " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
            (unsigned int)port, RTE_ETHER_ADDR_BYTES(&addr));

    /* Enable RX in promiscuous mode for the Ethernet device. */
    retval = rte_eth_promiscuous_enable(port);
    if (retval != 0)
        return retval;


    return 0;
}

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;
}
/* Parse the argument given in the command line of the application */
static int
parse_args(int argc, char **argv)
{
    int opt, ret, cnt, i;
    char **argvopt;
    uint16_t *oob_enable;
    int option_index;
    char *prgname = argv[0];
    struct core_info *ci;
    float branch_ratio;
    static struct option lgopts[] = {
        { "mac-updating", no_argument, 0, 1},
        { "no-mac-updating", no_argument, 0, 0},
        { "core-branch-ratio", optional_argument, 0, 'b'},
        { "port-list", optional_argument, 0, 'p'},
        {NULL, 0, 0, 0}
    };
    argvopt = argv;
    ci = get_core_info();

    while ((opt = getopt_long(argc, argvopt, "p:q:T:b:",
                  lgopts, &option_index)) != EOF) {

        switch (opt) {
        /* portmask */
        case 'p':
            enabled_port_mask = parse_portmask(optarg);
            if (enabled_port_mask == 0) {
                printf("invalid portmask\n");
                return -1;
            }
            break;
        case 'b':
            branch_ratio = BRANCH_RATIO_THRESHOLD;
            oob_enable = malloc(ci->core_count * sizeof(uint16_t));
            if (oob_enable == NULL) {
                printf("Error - Unable to allocate memory\n");
                return -1;
            }
            cnt = parse_set(optarg, oob_enable, ci->core_count);
            if (cnt < 0) {
                printf("Invalid core-list section in "
                       "core-branch-ratio matrix - [%s]\n",
                        optarg);
                free(oob_enable);
                break;
            }
            cnt = parse_branch_ratio(optarg, &branch_ratio);
            if (cnt < 0) {
                printf("Invalid branch-ratio section in "
                       "core-branch-ratio matrix - [%s]\n",
                        optarg);
                free(oob_enable);
                break;
            }
            if (branch_ratio <= 0.0 || branch_ratio > 100.0) {
                printf("invalid branch ratio specified\n");
                free(oob_enable);
                return -1;
            }
            for (i = 0; i < ci->core_count; i++) {
                if (oob_enable[i]) {
                    printf("***Using core %d "
                           "with branch ratio %f\n",
                           i, branch_ratio);
                    ci->cd[i].oob_enabled = 1;
                    ci->cd[i].global_enabled_cpus = 1;
                    ci->cd[i].branch_ratio_threshold =
                                branch_ratio;
                }
            }
            free(oob_enable);
            break;
        /* long options */
        case 0:
            break;

        default:
            return -1;
        }
    }

    if (optind >= 0)
        argv[optind-1] = prgname;

    ret = optind-1;
    optind = 0; /* reset getopt lib */
    return ret;
}

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 */
    uint16_t portid, count, all_ports_up, print_flag = 0;
    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++) {
        if (force_quit)
            return;
        all_ports_up = 1;
        RTE_ETH_FOREACH_DEV(portid) {
            if (force_quit)
                return;
            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
run_monitor(__rte_unused void *arg)
{
    if (channel_monitor_init() < 0) {
        printf("Unable to initialize channel monitor\n");
        return -1;
    }
    run_channel_monitor();
    return 0;
}

static int
run_core_monitor(__rte_unused void *arg)
{
    if (branch_monitor_init() < 0) {
        printf("Unable to initialize core monitor\n");
        return -1;
    }
    run_branch_monitor();
    return 0;
}

static void
sig_handler(int signo)
{
    printf("Received signal %d, exiting...\n", signo);
    channel_monitor_exit();
    channel_manager_exit();
    power_manager_exit();

}

int
main(int argc, char **argv)
{
    int ret;
    unsigned lcore_id;
    unsigned int nb_ports;
    struct rte_mempool *mbuf_pool;
    uint16_t portid;
    struct core_info *ci;


    ret = core_info_init();
    if (ret < 0)
        rte_panic("Cannot allocate core info\n");

    ci = get_core_info();

    ret = rte_eal_init(argc, argv);
    if (ret < 0)
        rte_panic("Cannot init EAL\n");

    signal(SIGINT, sig_handler);
    signal(SIGTERM, sig_handler);

    argc -= ret;
    argv += ret;

    /* parse application arguments (after the EAL ones) */
    ret = parse_args(argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid arguments\n");

    nb_ports = rte_eth_dev_count_avail();

    if (nb_ports > 0) {
        mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
                NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
                RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());

        if (mbuf_pool == NULL)
            rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");

        /* Initialize ports. */
        RTE_ETH_FOREACH_DEV(portid) {
            struct rte_ether_addr eth;
            int w, j;
            int ret;

            if ((enabled_port_mask & (1 << portid)) == 0)
                continue;

            eth.addr_bytes[0] = 0xe0;
            eth.addr_bytes[1] = 0xe0;
            eth.addr_bytes[2] = 0xe0;
            eth.addr_bytes[3] = 0xe0;
            eth.addr_bytes[4] = portid + 0xf0;

            if (port_init(portid, mbuf_pool) != 0)
                rte_exit(EXIT_FAILURE,
                    "Cannot init port %"PRIu8 "\n",
                    portid);

            for (w = 0; w < RTE_POWER_MAX_VFS; w++) {
                eth.addr_bytes[5] = w + 0xf0;

                ret = -ENOTSUP;
#ifdef RTE_NET_IXGBE
                ret = rte_pmd_ixgbe_set_vf_mac_addr(portid,
                            w, &eth);
#endif
#ifdef RTE_NET_I40E
                if (ret == -ENOTSUP)
                    ret = rte_pmd_i40e_set_vf_mac_addr(
                            portid, w, &eth);
#endif
#ifdef RTE_NET_BNXT
                if (ret == -ENOTSUP)
                    ret = rte_pmd_bnxt_set_vf_mac_addr(
                            portid, w, &eth);
#endif

                switch (ret) {
                case 0:
                    printf("Port %d VF %d MAC: ",
                            portid, w);
                    for (j = 0; j < 5; j++) {
                        printf("%02x:",
                            eth.addr_bytes[j]);
                    }
                    printf("%02x\n", eth.addr_bytes[5]);
                    break;
                }
                printf("\n");
            }
        }
    }

    check_all_ports_link_status(enabled_port_mask);

    lcore_id = rte_get_next_lcore(-1, 1, 0);
    if (lcore_id == RTE_MAX_LCORE) {
        RTE_LOG(ERR, EAL, "A minimum of three cores are required to run "
                "application\n");
        return 0;
    }
    printf("Running channel monitor on lcore id %d\n", lcore_id);
    rte_eal_remote_launch(run_monitor, NULL, lcore_id);

    lcore_id = rte_get_next_lcore(lcore_id, 1, 0);
    if (lcore_id == RTE_MAX_LCORE) {
        RTE_LOG(ERR, EAL, "A minimum of three cores are required to run "
                "application\n");
        return 0;
    }
    if (power_manager_init() < 0) {
        printf("Unable to initialize power manager\n");
        return -1;
    }
    if (channel_manager_init(CHANNEL_MGR_DEFAULT_HV_PATH) < 0) {
        printf("Unable to initialize channel manager\n");
        return -1;
    }

    add_host_channels();

    printf("Running core monitor on lcore id %d\n", lcore_id);
    rte_eal_remote_launch(run_core_monitor, NULL, lcore_id);

    run_cli(NULL);

    branch_monitor_exit();

    rte_eal_mp_wait_lcore();

    free(ci->cd);

    /* clean up the EAL */
    rte_eal_cleanup();

    return 0;
}