add subtree-ish sources for 12.0.3

[ceph.git] / ceph / src / dpdk / examples / l3fwd-vf / main.c

/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#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 <signal.h>

#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_memzone.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_launch.h>
#include <rte_atomic.h>
#include <rte_spinlock.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include <rte_string_fns.h>

#define APP_LOOKUP_EXACT_MATCH          0
#define APP_LOOKUP_LPM                  1
#define DO_RFC_1812_CHECKS

//#define APP_LOOKUP_METHOD             APP_LOOKUP_EXACT_MATCH
#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

#define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1

#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*RTE_TEST_RX_DESC_DEFAULT +                                                        \
                                nb_ports*nb_lcores*MAX_PKT_BURST +                                                                                      \
                                nb_ports*n_tx_queue*RTE_TEST_TX_DESC_DEFAULT +                                                          \
                                nb_lcores*MEMPOOL_CACHE_SIZE),                                                                                          \
                                (unsigned)8192)

/*
 * RX and TX Prefetch, Host, and Write-back threshold values should be
 * carefully set for optimal performance. Consult the network
 * controller's datasheet and supporting DPDK documentation for guidance
 * on how these parameters should be set.
 */
#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */

/*
 * These default values are optimized for use with the Intel(R) 82599 10 GbE
 * Controller and the DPDK ixgbe PMD. Consider using other values for other
 * network controllers and/or network drivers.
 */
#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */

#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */

#define NB_SOCKETS 8

#define SOCKET0 0

/* 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 128
#define RTE_TEST_TX_DESC_DEFAULT 512
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;

/* ethernet addresses of ports */
static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];

/* mask of enabled ports */
static uint32_t enabled_port_mask = 0;
static int numa_on = 1; /**< NUMA is enabled by default. */

struct mbuf_table {
        uint16_t len;
        struct rte_mbuf *m_table[MAX_PKT_BURST];
};

struct lcore_rx_queue {
        uint8_t port_id;
        uint8_t queue_id;
} __rte_cache_aligned;

#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 1
#define MAX_RX_QUEUE_PER_PORT 1

#define MAX_LCORE_PARAMS 1024
struct lcore_params {
        uint8_t port_id;
        uint8_t queue_id;
        uint8_t lcore_id;
} __rte_cache_aligned;

static 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},
};

static struct lcore_params * lcore_params = lcore_params_array_default;
static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
                                sizeof(lcore_params_array_default[0]);

static struct rte_eth_conf port_conf = {
        .rxmode = {
                .mq_mode        = ETH_MQ_RX_RSS,
                .max_rx_pkt_len = ETHER_MAX_LEN,
                .split_hdr_size = 0,
                .header_split   = 0, /**< Header Split disabled */
                .hw_ip_checksum = 1, /**< IP checksum offload enabled */
                .hw_vlan_filter = 0, /**< VLAN filtering disabled */
                .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
                .hw_strip_crc   = 0, /**< CRC stripped by hardware */
        },
        .rx_adv_conf = {
                .rss_conf = {
                        .rss_key = NULL,
                        .rss_hf = ETH_RSS_IP,
                },
        },
        .txmode = {
                .mq_mode = ETH_MQ_TX_NONE,
        },
};

static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];


#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)

#ifdef RTE_MACHINE_CPUFLAG_SSE4_2
#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;
} __attribute__((__packed__));

struct l3fwd_route {
        struct ipv4_5tuple key;
        uint8_t if_out;
};

static struct l3fwd_route l3fwd_route_array[] = {
        {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
        {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
        {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
        {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
};

typedef struct rte_hash lookup_struct_t;
static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];

#define L3FWD_HASH_ENTRIES      1024
struct rte_hash_parameters l3fwd_hash_params = {
        .name = "l3fwd_hash_0",
        .entries = L3FWD_HASH_ENTRIES,
        .key_len = sizeof(struct ipv4_5tuple),
        .hash_func = DEFAULT_HASH_FUNC,
        .hash_func_init_val = 0,
        .socket_id = SOCKET0,
};

#define L3FWD_NUM_ROUTES \
        (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))

static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
struct l3fwd_route {
        uint32_t ip;
        uint8_t  depth;
        uint8_t  if_out;
};

static struct l3fwd_route l3fwd_route_array[] = {
        {IPv4(1,1,1,0), 24, 0},
        {IPv4(2,1,1,0), 24, 1},
        {IPv4(3,1,1,0), 24, 2},
        {IPv4(4,1,1,0), 24, 3},
        {IPv4(5,1,1,0), 24, 4},
        {IPv4(6,1,1,0), 24, 5},
        {IPv4(7,1,1,0), 24, 6},
        {IPv4(8,1,1,0), 24, 7},
};

#define L3FWD_NUM_ROUTES \
        (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))

#define L3FWD_LPM_MAX_RULES     1024

typedef struct rte_lpm lookup_struct_t;
static lookup_struct_t *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 tx_queue_id;
        struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
        lookup_struct_t * lookup_struct;
} __rte_cache_aligned;

static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS] = {RTE_SPINLOCK_INITIALIZER};
/* Send burst of packets on an output interface */
static inline int
send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
{
        struct rte_mbuf **m_table;
        int ret;
        uint16_t queueid;

        queueid = qconf->tx_queue_id;
        m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;

        rte_spinlock_lock(&spinlock_conf[port]);
        ret = rte_eth_tx_burst(port, queueid, m_table, n);
        rte_spinlock_unlock(&spinlock_conf[port]);

        if (unlikely(ret < n)) {
                do {
                        rte_pktmbuf_free(m_table[ret]);
                } while (++ret < n);
        }

        return 0;
}

/* Enqueue a single packet, and send burst if queue is filled */
static inline int
send_single_packet(struct rte_mbuf *m, uint8_t port)
{
        uint32_t lcore_id;
        uint16_t len;
        struct lcore_conf *qconf;

        lcore_id = rte_lcore_id();

        qconf = &lcore_conf[lcore_id];
        len = qconf->tx_mbufs[port].len;
        qconf->tx_mbufs[port].m_table[len] = m;
        len++;

        /* enough pkts to be sent */
        if (unlikely(len == MAX_PKT_BURST)) {
                send_burst(qconf, MAX_PKT_BURST, port);
                len = 0;
        }

        qconf->tx_mbufs[port].len = len;
        return 0;
}

#ifdef DO_RFC_1812_CHECKS
static inline int
is_valid_ipv4_pkt(struct 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 ipv4_hdr))
                return -1;

        /* 2. The IP checksum must be correct. */
        /* this is checked in H/W */

        /*
         * 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 ipv4_hdr))
                return -5;

        return 0;
}
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
print_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 inline uint8_t
get_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
{
        struct ipv4_5tuple key;
        struct tcp_hdr *tcp;
        struct 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 tcp_hdr *)((unsigned char *) ipv4_hdr +
                                        sizeof(struct 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 udp_hdr *)((unsigned char *) ipv4_hdr +
                                        sizeof(struct 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;
        }

        /* Find destination port */
        ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key);
        return (uint8_t)((ret < 0)? portid : l3fwd_out_if[ret]);
}
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static inline uint8_t
get_dst_port(struct ipv4_hdr *ipv4_hdr,  uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
{
        uint32_t next_hop;

        return (uint8_t) ((rte_lpm_lookup(l3fwd_lookup_struct,
                        rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
                        next_hop : portid);
}
#endif

static inline void
l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, lookup_struct_t * l3fwd_lookup_struct)
{
        struct ether_hdr *eth_hdr;
        struct ipv4_hdr *ipv4_hdr;
        void *tmp;
        uint8_t dst_port;

        eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);

        ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
                                           sizeof(struct 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_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct);
        if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
                dst_port = portid;

        /* 02:00:00:00:00:xx */
        tmp = &eth_hdr->d_addr.addr_bytes[0];
        *((uint64_t *)tmp) = 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 */
        ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);

        send_single_packet(m, dst_port);

}

/* main processing loop */
static int
main_loop(__attribute__((unused)) void *dummy)
{
        struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
        unsigned lcore_id;
        uint64_t prev_tsc, diff_tsc, cur_tsc;
        int i, j, nb_rx;
        uint8_t portid, queueid;
        struct lcore_conf *qconf;
        const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;

        prev_tsc = 0;

        lcore_id = rte_lcore_id();
        qconf = &lcore_conf[lcore_id];

        if (qconf->n_rx_queue == 0) {
                RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
                return 0;
        }

        RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);

        for (i = 0; i < qconf->n_rx_queue; i++) {

                portid = qconf->rx_queue_list[i].port_id;
                queueid = qconf->rx_queue_list[i].queue_id;
                RTE_LOG(INFO, L3FWD, " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n", lcore_id,
                        portid, queueid);
        }

        while (1) {

                cur_tsc = rte_rdtsc();

                /*
                 * TX burst queue drain
                 */
                diff_tsc = cur_tsc - prev_tsc;
                if (unlikely(diff_tsc > drain_tsc)) {

                        /*
                         * This could be optimized (use queueid instead of
                         * portid), but it is not called so often
                         */
                        for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
                                if (qconf->tx_mbufs[portid].len == 0)
                                        continue;
                                send_burst(&lcore_conf[lcore_id],
                                        qconf->tx_mbufs[portid].len,
                                        portid);
                                qconf->tx_mbufs[portid].len = 0;
                        }

                        prev_tsc = cur_tsc;
                }

                /*
                 * Read packet from RX queues
                 */
                for (i = 0; i < qconf->n_rx_queue; ++i) {

                        portid = qconf->rx_queue_list[i].port_id;
                        queueid = qconf->rx_queue_list[i].queue_id;
                        nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);

                        /* 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->lookup_struct);
                        }

                        /* Forward remaining prefetched packets */
                        for (; j < nb_rx; j++) {
                                l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
                        }
                }
        }
}

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);
                }
        }
        return 0;
}

static int
check_port_config(const unsigned nb_ports)
{
        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 (portid >= nb_ports) {
                        printf("port %u is not present on the board\n", portid);
                        return -1;
                }
        }
        return 0;
}

static uint8_t
get_port_n_rx_queues(const uint8_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"
                "  [--config (port,queue,lcore)[,(port,queue,lcore]]\n"
                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
                "  --config (port,queue,lcore): rx queues configuration\n"
                "  --no-numa: optional, disable numa awareness\n",
                prgname);
}

/* Custom handling of signals to handle process terminal */
static void
signal_handler(int signum)
{
        uint8_t portid;
        uint8_t nb_ports = rte_eth_dev_count();

        /* When we receive a SIGINT signal */
        if (signum == SIGINT) {
                for (portid = 0; portid < nb_ports; portid++) {
                        /* skip ports that are not enabled */
                        if ((enabled_port_mask & (1 << portid)) == 0)
                                continue;
                        rte_eth_dev_close(portid);
                }
        }
        rte_exit(EXIT_SUCCESS, "\n User forced exit\n");
}
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 -1;

        if (pm == 0)
                return -1;

        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;
}

/* 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;
        char *prgname = argv[0];
        static struct option lgopts[] = {
                {"config", 1, 0, 0},
                {"no-numa", 0, 0, 0},
                {NULL, 0, 0, 0}
        };

        argvopt = argv;

        while ((opt = getopt_long(argc, argvopt, "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;

                /* long options */
                case 0:
                        if (!strcmp(lgopts[option_index].name, "config")) {
                                ret = parse_config(optarg);
                                if (ret) {
                                        printf("invalid config\n");
                                        print_usage(prgname);
                                        return -1;
                                }
                        }

                        if (!strcmp(lgopts[option_index].name, "no-numa")) {
                                printf("numa is disabled \n");
                                numa_on = 0;
                        }
                        break;

                default:
                        print_usage(prgname);
                        return -1;
                }
        }

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

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

static void
print_ethaddr(const char *name, const struct ether_addr *eth_addr)
{
        char buf[ETHER_ADDR_FMT_SIZE];
        ether_format_addr(buf, 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)
{
        unsigned i;
        int ret;
        char s[64];

        /* create  hashes */
        snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid);
        l3fwd_hash_params.name = s;
        l3fwd_hash_params.socket_id = socketid;
        l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params);
        if (l3fwd_lookup_struct[socketid] == NULL)
                rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
                                "socket %d\n", socketid);

        /* populate the hash */
        for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
                ret = rte_hash_add_key (l3fwd_lookup_struct[socketid],
                                (void *) &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);
                }
                l3fwd_out_if[ret] = l3fwd_route_array[i].if_out;
                printf("Hash: Adding key\n");
                print_key(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];

        struct rte_lpm_config lpm_ipv4_config;

        lpm_ipv4_config.max_rules = L3FWD_LPM_MAX_RULES;
        lpm_ipv4_config.number_tbl8s = 256;
        lpm_ipv4_config.flags = 0;

        /* create the LPM table */
        snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid);
        l3fwd_lookup_struct[socketid] =
                        rte_lpm_create(s, socketid, &lpm_ipv4_config);
        if (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 < L3FWD_NUM_ROUTES; i++) {
                ret = rte_lpm_add(l3fwd_lookup_struct[socketid],
                        l3fwd_route_array[i].ip,
                        l3fwd_route_array[i].depth,
                        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)l3fwd_route_array[i].ip,
                        l3fwd_route_array[i].depth,
                        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->lookup_struct = l3fwd_lookup_struct[socketid];
        }
        return 0;
}

int
main(int argc, char **argv)
{
        struct lcore_conf *qconf;
        struct rte_eth_dev_info dev_info;
        struct rte_eth_txconf *txconf;
        int ret;
        unsigned nb_ports;
        uint16_t queueid;
        unsigned lcore_id;
        uint32_t nb_lcores;
        uint16_t n_tx_queue;
        uint8_t portid, nb_rx_queue, queue, socketid;

        signal(SIGINT, signal_handler);
        /* init EAL */
        ret = rte_eal_init(argc, argv);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
        argc -= ret;
        argv += ret;

        /* parse application arguments (after the EAL ones) */
        ret = parse_args(argc, argv);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\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();

        if (check_port_config(nb_ports) < 0)
                rte_exit(EXIT_FAILURE, "check_port_config failed\n");

        nb_lcores = rte_lcore_count();

        /* initialize all ports */
        for (portid = 0; portid < nb_ports; portid++) {
                /* 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);

                /* must always equal(=1) */
                nb_rx_queue = get_port_n_rx_queues(portid);
                n_tx_queue = MAX_TX_QUEUE_PER_PORT;

                printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
                        nb_rx_queue, (unsigned)1 );
                ret = rte_eth_dev_configure(portid, nb_rx_queue, n_tx_queue, &port_conf);
                if (ret < 0)
                        rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
                                ret, portid);

                rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
                print_ethaddr(" Address:", &ports_eth_addr[portid]);
                printf(", ");

                ret = init_mem(NB_MBUF);
                if (ret < 0)
                        rte_exit(EXIT_FAILURE, "init_mem failed\n");

                /* init one TX queue */
                socketid = (uint8_t)rte_lcore_to_socket_id(rte_get_master_lcore());

                printf("txq=%d,%d,%d ", portid, 0, socketid);
                fflush(stdout);

                rte_eth_dev_info_get(portid, &dev_info);
                txconf = &dev_info.default_txconf;
                if (port_conf.rxmode.jumbo_frame)
                        txconf->txq_flags = 0;
                ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
                                                 socketid, txconf);
                if (ret < 0)
                        rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
                                "port=%d\n", ret, portid);

                printf("\n");
        }

        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];
                qconf->tx_queue_id = 0;

                printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
                fflush(stdout);
                /* init RX queues */
                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;

                        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_rx_queue_setup(portid, queueid, nb_rxd,
                                                socketid, NULL,
                                                pktmbuf_pool[socketid]);
                        if (ret < 0)
                                rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
                                                "port=%d\n", ret, portid);
                }
        }
        printf("\n");

        /* start ports */
        for (portid = 0; portid < nb_ports; 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);

                printf("done: Port %d\n", portid);

        }

        /* launch per-lcore init on every lcore */
        rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
        RTE_LCORE_FOREACH_SLAVE(lcore_id) {
                if (rte_eal_wait_lcore(lcore_id) < 0)
                        return -1;
        }

        return 0;
}