/*
    Copyright (C) 2018 Open Networking Foundation

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <iostream>
#include <memory>
#include <string>

#include "Queue.h"
#include <iostream>
#include <sstream>
#include <chrono>
#include <thread>

#include "device.h"
#include "core.h"
#include "indications.h"
#include "stats_collection.h"
#include "error_format.h"
#include "state.h"
#include "utils.h"

extern "C"
{
#include <bcmos_system.h>
#include <bal_api.h>
#include <bal_api_end.h>
// FIXME : dependency problem
// #include <bcm_common_gpon.h>
// #include <bcm_dev_log_task.h>
}

dev_log_id openolt_log_id = bcm_dev_log_id_register("OPENOLT", DEV_LOG_LEVEL_INFO, DEV_LOG_ID_TYPE_BOTH);
dev_log_id omci_log_id = bcm_dev_log_id_register("OMCI", DEV_LOG_LEVEL_INFO, DEV_LOG_ID_TYPE_BOTH);

#define MAX_SUPPORTED_INTF 16
#define BAL_RSC_MANAGER_BASE_TM_SCHED_ID 16384

static unsigned int num_of_nni_ports = 0;
static unsigned int num_of_pon_ports = 0;
static std::string intf_technology[MAX_SUPPORTED_INTF];
static const std::string UNKNOWN_TECH("unknown");
static std::string technology(UNKNOWN_TECH);

static std::string firmware_version = "Openolt.2018.10.04";

State state;

static Status SchedAdd_(int intf_id, int onu_id, int agg_port_id, int sched_id, int pir);
static Status SchedRemove_(int intf_id, int onu_id, int agg_port_id, int sched_id);

static inline int mk_sched_id(int intf_id, int onu_id) {
    return 1023 + intf_id * 32 + onu_id;
}

static inline int mk_agg_port_id(int intf_id, int onu_id) {
    if (technology == "gpon") return 511 + intf_id * 32 + onu_id;
    return 1023 + intf_id * 32 + onu_id;
}

Status GetDeviceInfo_(openolt::DeviceInfo* device_info) {
    device_info->set_vendor(VENDOR_ID);
    device_info->set_model(MODEL_ID);
    device_info->set_hardware_version("");
    device_info->set_firmware_version(firmware_version);
    device_info->set_technology(technology);
    device_info->set_pon_ports(num_of_pon_ports);
    if (technology == "xgspon") {
        device_info->set_onu_id_start(1);
        device_info->set_onu_id_end(255);
        device_info->set_alloc_id_start(1024);
        device_info->set_alloc_id_end(16383);
        device_info->set_gemport_id_start(1024);
        device_info->set_gemport_id_end(65535);
    }
    else if (technology == "gpon") {
        device_info->set_onu_id_start(0);
        device_info->set_onu_id_end(127);
        device_info->set_alloc_id_start(256);
        device_info->set_alloc_id_end(767);
        device_info->set_gemport_id_start(0);
        device_info->set_gemport_id_end(4095);
    }
    else {
        device_info->set_onu_id_start(0);
        device_info->set_onu_id_end(0);
        device_info->set_alloc_id_start(0);
        device_info->set_alloc_id_end(0);
        device_info->set_gemport_id_start(0);
        device_info->set_gemport_id_end(0);
    }

    // FIXME: Once dependency problem is fixed
    // device_info->set_pon_ports(num_of_pon_ports);
    // device_info->set_onu_id_end(XGPON_NUM_OF_ONUS - 1);
    // device_info->set_alloc_id_start(1024);
    // device_info->set_alloc_id_end(XGPON_NUM_OF_ALLOC_IDS * num_of_pon_ports ? - 1);
    // device_info->set_gemport_id_start(XGPON_MIN_BASE_SERVICE_PORT_ID);
    // device_info->set_gemport_id_end(XGPON_NUM_OF_GEM_PORT_IDS_PER_PON * num_of_pon_ports ? - 1);
    // device_info->set_pon_ports(num_of_pon_ports);

    return Status::OK;
}

Status Enable_(int argc, char *argv[]) {
    bcmbal_access_terminal_cfg acc_term_obj;
    bcmbal_access_terminal_key key = { };

    if (!state.is_activated()) {

        vendor_init();
        bcmbal_init(argc, argv, NULL);

        BCM_LOG(INFO, openolt_log_id, "Enable OLT - %s-%s\n", VENDOR_ID, MODEL_ID);

        Status status = SubscribeIndication();
        if (!status.ok()) {
            BCM_LOG(ERROR, openolt_log_id, "SubscribeIndication failed - %s : %s\n",
                grpc_status_code_to_string(status.error_code()).c_str(),
                status.error_message().c_str());

            return status;
        }

        key.access_term_id = DEFAULT_ATERM_ID;
        BCMBAL_CFG_INIT(&acc_term_obj, access_terminal, key);
        BCMBAL_CFG_PROP_SET(&acc_term_obj, access_terminal, admin_state, BCMBAL_STATE_UP);
        bcmos_errno err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(acc_term_obj.hdr));
        if (err) {
            BCM_LOG(ERROR, openolt_log_id, "Failed to enable OLT\n");
            return bcm_to_grpc_err(err, "Failed to enable OLT");
        }

        init_stats();
    }

    //If already enabled, generate an extra indication ????
    return Status::OK;
}

Status Disable_() {
    // bcmbal_access_terminal_cfg acc_term_obj;
    // bcmbal_access_terminal_key key = { };
    //
    // if (state::is_activated) {
    //     std::cout << "Disable OLT" << std::endl;
    //     key.access_term_id = DEFAULT_ATERM_ID;
    //     BCMBAL_CFG_INIT(&acc_term_obj, access_terminal, key);
    //     BCMBAL_CFG_PROP_SET(&acc_term_obj, access_terminal, admin_state, BCMBAL_STATE_DOWN);
    //     bcmos_errno err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(acc_term_obj.hdr));
    //     if (err) {
    //         std::cout << "ERROR: Failed to disable OLT" << std::endl;
    //         return bcm_to_grpc_err(err, "Failed to disable OLT");
    //     }
    // }
    // //If already disabled, generate an extra indication ????
    // return Status::OK;
    //This fails with Operation Not Supported, bug ???

    //TEMPORARY WORK AROUND
    Status status = DisableUplinkIf_(0);
    if (status.ok()) {
        state.deactivate();
        openolt::Indication ind;
        openolt::OltIndication* olt_ind = new openolt::OltIndication;
        olt_ind->set_oper_state("down");
        ind.set_allocated_olt_ind(olt_ind);
        BCM_LOG(INFO, openolt_log_id, "Disable OLT, add an extra indication\n");
        oltIndQ.push(ind);
    }
    return status;

}

Status Reenable_() {
    Status status = EnableUplinkIf_(0);
    if (status.ok()) {
        state.activate();
        openolt::Indication ind;
        openolt::OltIndication* olt_ind = new openolt::OltIndication;
        olt_ind->set_oper_state("up");
        ind.set_allocated_olt_ind(olt_ind);
        BCM_LOG(INFO, openolt_log_id, "Reenable OLT, add an extra indication\n");
        oltIndQ.push(ind);
    }
    return status;
}

Status EnablePonIf_(uint32_t intf_id) {
    bcmbal_interface_cfg interface_obj;
    bcmbal_interface_key interface_key;

    interface_key.intf_id = intf_id;
    interface_key.intf_type = BCMBAL_INTF_TYPE_PON;

    BCMBAL_CFG_INIT(&interface_obj, interface, interface_key);

    BCMBAL_CFG_PROP_GET(&interface_obj, interface, admin_state);
    bcmos_errno err = bcmbal_cfg_get(DEFAULT_ATERM_ID, &(interface_obj.hdr));
    if (err == BCM_ERR_OK && interface_obj.data.admin_state == BCMBAL_STATE_UP) {
        BCM_LOG(DEBUG, openolt_log_id, "PON interface: %d already enabled\n", intf_id);
        return Status::OK;
    }

    BCMBAL_CFG_PROP_SET(&interface_obj, interface, admin_state, BCMBAL_STATE_UP);

    err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(interface_obj.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to enable PON interface: %d\n", intf_id);
        return bcm_to_grpc_err(err, "Failed to enable PON interface");
    }

    return Status::OK;
}

Status DisableUplinkIf_(uint32_t intf_id) {
    bcmbal_interface_cfg interface_obj;
    bcmbal_interface_key interface_key;

    interface_key.intf_id = intf_id;
    interface_key.intf_type = BCMBAL_INTF_TYPE_NNI;

    BCMBAL_CFG_INIT(&interface_obj, interface, interface_key);
    BCMBAL_CFG_PROP_SET(&interface_obj, interface, admin_state, BCMBAL_STATE_DOWN);

    bcmos_errno err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(interface_obj.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to disable Uplink interface: %d\n", intf_id);
        return bcm_to_grpc_err(err, "Failed to disable Uplink interface");
    }

    return Status::OK;
}

Status ProbeDeviceCapabilities_() {
    bcmbal_access_terminal_cfg acc_term_obj;
    bcmbal_access_terminal_key key = { };

    key.access_term_id = DEFAULT_ATERM_ID;
    BCMBAL_CFG_INIT(&acc_term_obj, access_terminal, key);
    BCMBAL_CFG_PROP_GET(&acc_term_obj, access_terminal, admin_state);
    BCMBAL_CFG_PROP_GET(&acc_term_obj, access_terminal, oper_status);
    BCMBAL_CFG_PROP_GET(&acc_term_obj, access_terminal, topology);
    BCMBAL_CFG_PROP_GET(&acc_term_obj, access_terminal, sw_version);
    BCMBAL_CFG_PROP_GET(&acc_term_obj, access_terminal, conn_id);
    bcmos_errno err = bcmbal_cfg_get(DEFAULT_ATERM_ID, &(acc_term_obj.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to query OLT\n");
        return bcm_to_grpc_err(err, "Failed to query OLT");
    }

    BCM_LOG(INFO, openolt_log_id, "OLT capabilitites, admin_state: %s oper_state: %s\n", 
            acc_term_obj.data.admin_state == BCMBAL_STATE_UP ? "up" : "down",
            acc_term_obj.data.oper_status == BCMBAL_STATUS_UP ? "up" : "down");

    std::string bal_version;
    bal_version += std::to_string(acc_term_obj.data.sw_version.major_rev)
                + "." + std::to_string(acc_term_obj.data.sw_version.minor_rev)
                + "." + std::to_string(acc_term_obj.data.sw_version.release_rev);
    firmware_version = "BAL." + bal_version + "__" + firmware_version;

    BCM_LOG(INFO, openolt_log_id, "--------------- version %s object model: %d\n", bal_version.c_str(),
            acc_term_obj.data.sw_version.om_version);

    BCM_LOG(INFO, openolt_log_id, "--------------- topology nni:%d pon:%d dev:%d ppd:%d family: %d:%d\n",
            acc_term_obj.data.topology.num_of_nni_ports,
            acc_term_obj.data.topology.num_of_pon_ports,
            acc_term_obj.data.topology.num_of_mac_devs,
            acc_term_obj.data.topology.num_of_pons_per_mac_dev,
            acc_term_obj.data.topology.pon_family,
            acc_term_obj.data.topology.pon_sub_family
            );

    switch(acc_term_obj.data.topology.pon_sub_family)
    {
    case BCMBAL_PON_SUB_FAMILY_GPON:  technology = "gpon"; break;
    case BCMBAL_PON_SUB_FAMILY_XGS:   technology = "xgspon"; break;
    }

    num_of_nni_ports = acc_term_obj.data.topology.num_of_nni_ports;
    num_of_pon_ports = acc_term_obj.data.topology.num_of_pon_ports;

    BCM_LOG(INFO, openolt_log_id, "PON num_intfs: %d global technology: %s\n", num_of_pon_ports, technology.c_str());

    return Status::OK;
}

Status ProbePonIfTechnology_() {
    // Probe maximum extent possible as configured into BAL driver to determine
    // which are active in the current BAL topology. And for those
    // that are active, determine each port's access technology, i.e. "gpon" or "xgspon".
    for (uint32_t intf_id = 0; intf_id < num_of_pon_ports; ++intf_id) {
        bcmbal_interface_cfg interface_obj;
        bcmbal_interface_key interface_key;

        interface_key.intf_id = intf_id;
        interface_key.intf_type = BCMBAL_INTF_TYPE_PON;

        BCMBAL_CFG_INIT(&interface_obj, interface, interface_key);
        BCMBAL_CFG_PROP_GET(&interface_obj, interface, admin_state);
        BCMBAL_CFG_PROP_GET(&interface_obj, interface, transceiver_type);

        bcmos_errno err = bcmbal_cfg_get(DEFAULT_ATERM_ID, &(interface_obj.hdr));
        if (err != BCM_ERR_OK) {
            intf_technology[intf_id] = UNKNOWN_TECH;
            if(err != BCM_ERR_RANGE) BCM_LOG(ERROR, openolt_log_id, "Failed to get PON config: %d\n", intf_id);
        }
        else {
            switch(interface_obj.data.transceiver_type) {
            case BCMBAL_TRX_TYPE_GPON_SPS_43_48:
            case BCMBAL_TRX_TYPE_GPON_SPS_SOG_4321:
            case BCMBAL_TRX_TYPE_GPON_LTE_3680_M:
            case BCMBAL_TRX_TYPE_GPON_SOURCE_PHOTONICS:
            case BCMBAL_TRX_TYPE_GPON_LTE_3680_P:
                intf_technology[intf_id] = "gpon";
                break;
            default:
                intf_technology[intf_id] = "xgspon";
                break;
            }
            BCM_LOG(INFO, openolt_log_id, "PON intf_id: %d technology: %d:%s\n", intf_id, 
                    interface_obj.data.transceiver_type, intf_technology[intf_id].c_str());
        }
    }

    return Status::OK;
}

unsigned NumNniIf_() {return num_of_nni_ports;}
unsigned NumPonIf_() {return num_of_pon_ports;}

Status EnableUplinkIf_(uint32_t intf_id) {
    bcmbal_interface_cfg interface_obj;
    bcmbal_interface_key interface_key;

    interface_key.intf_id = intf_id;
    interface_key.intf_type = BCMBAL_INTF_TYPE_NNI;

    BCMBAL_CFG_INIT(&interface_obj, interface, interface_key);

    BCMBAL_CFG_PROP_GET(&interface_obj, interface, admin_state);
    bcmos_errno err = bcmbal_cfg_get(DEFAULT_ATERM_ID, &(interface_obj.hdr));
    if (err == BCM_ERR_OK && interface_obj.data.admin_state == BCMBAL_STATE_UP) {
        BCM_LOG(DEBUG, openolt_log_id, "Uplink interface: %d already enabled\n", intf_id);
        return Status::OK;
    }

    BCMBAL_CFG_PROP_SET(&interface_obj, interface, admin_state, BCMBAL_STATE_UP);

    err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(interface_obj.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to enable Uplink interface: %d\n", intf_id);
        return bcm_to_grpc_err(err, "Failed to enable Uplink interface");
    }

    return Status::OK;
}

Status DisablePonIf_(uint32_t intf_id) {
    bcmbal_interface_cfg interface_obj;
    bcmbal_interface_key interface_key;

    interface_key.intf_id = intf_id;
    interface_key.intf_type = BCMBAL_INTF_TYPE_PON;

    BCMBAL_CFG_INIT(&interface_obj, interface, interface_key);
    BCMBAL_CFG_PROP_SET(&interface_obj, interface, admin_state, BCMBAL_STATE_DOWN);

    bcmos_errno err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(interface_obj.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to disable PON interface: %d\n", intf_id);
        return bcm_to_grpc_err(err, "Failed to disable PON interface");
    }

    return Status::OK;
}

Status ActivateOnu_(uint32_t intf_id, uint32_t onu_id,
    const char *vendor_id, const char *vendor_specific, uint32_t pir,
    uint32_t alloc_id) {

    bcmbal_subscriber_terminal_cfg sub_term_obj = {};
    bcmbal_subscriber_terminal_key subs_terminal_key;
    bcmbal_serial_number serial_num = {};
    bcmbal_registration_id registration_id = {};

    BCM_LOG(INFO, openolt_log_id,  "Enabling ONU %d on PON %d : vendor id %s, vendor specific %s, pir %d, alloc_id %d\n",
        onu_id, intf_id, vendor_id, vendor_specific_to_str(vendor_specific).c_str(), pir, alloc_id);

    subs_terminal_key.sub_term_id = onu_id;
    subs_terminal_key.intf_id = intf_id;
    BCMBAL_CFG_INIT(&sub_term_obj, subscriber_terminal, subs_terminal_key);

    memcpy(serial_num.vendor_id, vendor_id, 4);
    memcpy(serial_num.vendor_specific, vendor_specific, 4);
    BCMBAL_CFG_PROP_SET(&sub_term_obj, subscriber_terminal, serial_number, serial_num);

#if 0
    // Commenting out as this is causing issues with onu activation
    // with BAL 2.6 (Broadcom CS5248819).

    // FIXME - Use a default (all zeros) registration id.
    memset(registration_id.arr, 0, sizeof(registration_id.arr));
    BCMBAL_CFG_PROP_SET(&sub_term_obj, subscriber_terminal, registration_id, registration_id);
#endif

    BCMBAL_CFG_PROP_SET(&sub_term_obj, subscriber_terminal, admin_state, BCMBAL_STATE_UP);

    bcmos_errno err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(sub_term_obj.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to enable ONU %d on PON %d\n", onu_id, intf_id);
        return bcm_to_grpc_err(err, "Failed to enable ONU");
    }

    if (alloc_id != 0) {
        // Use alloc_id as both agg_port_id and sched_id.
        // Additional Notes:
        // The agg_port_id is a BAL nomenclature for alloc_id (TCONT identifier).
        // The TCONT is associated with its own DBA scheduler with a unique scheduler ID.
        // Use the alloc_id itself as the DBA Scheduler identifier (sched_id).
        return SchedAdd_(intf_id, onu_id, alloc_id, alloc_id, pir);
    } else {
        return SchedAdd_(intf_id, onu_id, mk_agg_port_id(intf_id, onu_id), mk_sched_id(intf_id, onu_id), pir);
    }

    //return Status::OK;
}

Status DeactivateOnu_(uint32_t intf_id, uint32_t onu_id,
    const char *vendor_id, const char *vendor_specific) {

    bcmbal_subscriber_terminal_cfg sub_term_obj = {};
    bcmbal_subscriber_terminal_key subs_terminal_key;

    BCM_LOG(INFO, openolt_log_id,  "Deactivating ONU %d on PON %d : vendor id %s, vendor specific %s\n",
        onu_id, intf_id, vendor_id, vendor_specific_to_str(vendor_specific).c_str());

    subs_terminal_key.sub_term_id = onu_id;
    subs_terminal_key.intf_id = intf_id;
    BCMBAL_CFG_INIT(&sub_term_obj, subscriber_terminal, subs_terminal_key);

    BCMBAL_CFG_PROP_SET(&sub_term_obj, subscriber_terminal, admin_state, BCMBAL_STATE_DOWN);

    if (bcmbal_cfg_set(DEFAULT_ATERM_ID, &(sub_term_obj.hdr))) {
        BCM_LOG(ERROR, openolt_log_id,  "Failed to deactivate ONU %d on PON %d\n", onu_id, intf_id);
        return Status(grpc::StatusCode::INTERNAL, "Failed to deactivate ONU");
    }

    return Status::OK;
}

Status DeleteOnu_(uint32_t intf_id, uint32_t onu_id,
    const char *vendor_id, const char *vendor_specific,
    uint32_t alloc_id) {

    BCM_LOG(INFO, openolt_log_id,  "DeleteOnu ONU %d on PON %d : vendor id %s, vendor specific %s\n",
        onu_id, intf_id, vendor_id, vendor_specific_to_str(vendor_specific).c_str());

    // Need to deactivate before removing it (BAL rules)

    DeactivateOnu_(intf_id, onu_id, vendor_id, vendor_specific);
    // Sleep to allow the state to propagate
    // We need the subscriber terminal object to be admin down before removal
    // Without sleep the race condition is lost by ~ 20 ms
    std::this_thread::sleep_for(std::chrono::milliseconds(100));

    if (alloc_id != 0) {
        // Use alloc_id as both agg_port_id and sched_id
        // Additional Notes:
        // The agg_port_id is a BAL nomenclature for alloc_id (TCONT identifier).
        // The TCONT is associated with its own DBA scheduler with a unique scheduler ID.
        // Use the alloc_id itself as the DBA Scheduler identifier (sched_id).
        SchedRemove_(intf_id, onu_id, alloc_id, alloc_id);
    } else {
        SchedRemove_(intf_id, onu_id, mk_agg_port_id(intf_id, onu_id), mk_sched_id(intf_id, onu_id));
    }

    bcmos_errno err = BCM_ERR_OK;
    bcmbal_subscriber_terminal_cfg cfg;
    bcmbal_subscriber_terminal_key key = { };

    BCM_LOG(INFO, openolt_log_id, "Processing subscriber terminal cfg clear for sub_term_id %d  and intf_id %d\n",
        onu_id, intf_id);

    key.sub_term_id = onu_id ;
    key.intf_id = intf_id ;

    if (0 == key.sub_term_id)
    {
            BCM_LOG(INFO, openolt_log_id,"Invalid Key to handle subscriber terminal clear subscriber_terminal_id %d, Interface ID %d\n",
                onu_id, intf_id);
            return Status(grpc::StatusCode::INTERNAL, "Failed to delete ONU");
    }

    BCMBAL_CFG_INIT(&cfg, subscriber_terminal, key);

    err = bcmbal_cfg_clear(DEFAULT_ATERM_ID, &cfg.hdr);
    if (err != BCM_ERR_OK)
    {
       BCM_LOG(ERROR, openolt_log_id, "Failed to clear information for BAL subscriber_terminal_id %d, Interface ID %d\n",
            onu_id, intf_id);
        return Status(grpc::StatusCode::INTERNAL, "Failed to delete ONU");
    }

    return Status::OK;;
}

#define MAX_CHAR_LENGTH  20
#define MAX_OMCI_MSG_LENGTH 44
Status OmciMsgOut_(uint32_t intf_id, uint32_t onu_id, const std::string pkt) {
    bcmbal_u8_list_u32_max_2048 buf; /* A structure with a msg pointer and length value */
    bcmos_errno err = BCM_ERR_OK;

    /* The destination of the OMCI packet is a registered ONU on the OLT PON interface */
    bcmbal_dest proxy_pkt_dest;

    proxy_pkt_dest.type = BCMBAL_DEST_TYPE_ITU_OMCI_CHANNEL;
    proxy_pkt_dest.u.itu_omci_channel.sub_term_id = onu_id;
    proxy_pkt_dest.u.itu_omci_channel.intf_id = intf_id;

    // ???
    if ((pkt.size()/2) > MAX_OMCI_MSG_LENGTH) {
        buf.len = MAX_OMCI_MSG_LENGTH;
    } else {
        buf.len = pkt.size()/2;
    }

    /* Send the OMCI packet using the BAL remote proxy API */
    uint16_t idx1 = 0;
    uint16_t idx2 = 0;
    uint8_t arraySend[buf.len];
    char str1[MAX_CHAR_LENGTH];
    char str2[MAX_CHAR_LENGTH];
    memset(&arraySend, 0, buf.len);

    for (idx1=0,idx2=0; idx1<((buf.len)*2); idx1++,idx2++) {
       sprintf(str1,"%c", pkt[idx1]);
       sprintf(str2,"%c", pkt[++idx1]);
       strcat(str1,str2);
       arraySend[idx2] = strtol(str1, NULL, 16);
    }

    buf.val = (uint8_t *)malloc((buf.len)*sizeof(uint8_t));
    memcpy(buf.val, (uint8_t *)arraySend, buf.len);

    err = bcmbal_pkt_send(0, proxy_pkt_dest, (const char *)(buf.val), buf.len);

    if (err) {
        BCM_LOG(ERROR, omci_log_id, "Error sending OMCI message to ONU %d on PON %d\n", onu_id, intf_id);
    } else {
        BCM_LOG(DEBUG, omci_log_id, "OMCI request msg of length %d sent to ONU %d on PON %d : %s\n",
            buf.len, onu_id, intf_id, pkt.c_str());
    }

    free(buf.val);

    return Status::OK;
}

Status OnuPacketOut_(uint32_t intf_id, uint32_t onu_id, const std::string pkt) {
    bcmos_errno err = BCM_ERR_OK;
    bcmbal_dest proxy_pkt_dest;
    bcmbal_u8_list_u32_max_2048 buf;

    proxy_pkt_dest.type = BCMBAL_DEST_TYPE_SUB_TERM,
    proxy_pkt_dest.u.sub_term.sub_term_id = onu_id;
    proxy_pkt_dest.u.sub_term.intf_id = intf_id;

    buf.len = pkt.size();
    buf.val = (uint8_t *)malloc((buf.len)*sizeof(uint8_t));
    memcpy(buf.val, (uint8_t *)pkt.data(), buf.len);

    err = bcmbal_pkt_send(0, proxy_pkt_dest, (const char *)(buf.val), buf.len);

    BCM_LOG(INFO, openolt_log_id, "Packet out of length %d sent to ONU %d on PON %d\n",
        buf.len, onu_id, intf_id);

    free(buf.val);

    return Status::OK;
}

Status UplinkPacketOut_(uint32_t intf_id, const std::string pkt) {
    bcmos_errno err = BCM_ERR_OK;
    bcmbal_dest proxy_pkt_dest;
    bcmbal_u8_list_u32_max_2048 buf;

    proxy_pkt_dest.type = BCMBAL_DEST_TYPE_NNI,
    proxy_pkt_dest.u.nni.intf_id = intf_id;

    buf.len = pkt.size();
    buf.val = (uint8_t *)malloc((buf.len)*sizeof(uint8_t));
    memcpy(buf.val, (uint8_t *)pkt.data(), buf.len);

    err = bcmbal_pkt_send(0, proxy_pkt_dest, (const char *)(buf.val), buf.len);

    BCM_LOG(INFO, openolt_log_id, "Packet out of length %d sent through uplink port %d\n",
        buf.len, intf_id);

    free(buf.val);

    return Status::OK;
}

Status FlowAdd_(int32_t onu_id,
                uint32_t flow_id, const std::string flow_type,
                int32_t access_intf_id, int32_t network_intf_id,
                uint32_t gemport_id, uint32_t sched_id,
                int32_t priority_value,
                const ::openolt::Classifier& classifier,
                const ::openolt::Action& action) {
    bcmos_errno err;
    bcmbal_flow_cfg cfg;
    bcmbal_flow_key key = { };

    BCM_LOG(INFO, openolt_log_id, "flow add - intf_id %d, onu_id %d, flow_id %d, `flow_type` %s, gemport_id %d, network_intf_id %d\n",
        access_intf_id, onu_id, flow_id, flow_type.c_str(), gemport_id, network_intf_id);

    key.flow_id = flow_id;
    if (flow_type.compare("upstream") == 0 ) {
        key.flow_type = BCMBAL_FLOW_TYPE_UPSTREAM;
    } else if (flow_type.compare("downstream") == 0) {
        key.flow_type = BCMBAL_FLOW_TYPE_DOWNSTREAM;
    } else {
        BCM_LOG(WARNING, openolt_log_id, "Invalid flow type %s\n", flow_type.c_str());
        return bcm_to_grpc_err(BCM_ERR_PARM, "Invalid flow type");
    }

    BCMBAL_CFG_INIT(&cfg, flow, key);

    BCMBAL_CFG_PROP_SET(&cfg, flow, admin_state, BCMBAL_STATE_UP);
    if (access_intf_id >= 0) {
        BCMBAL_CFG_PROP_SET(&cfg, flow, access_int_id, access_intf_id);
    }
    if (network_intf_id >= 0) {
        BCMBAL_CFG_PROP_SET(&cfg, flow, network_int_id, network_intf_id);
    }
    if (onu_id >= 0) {
        BCMBAL_CFG_PROP_SET(&cfg, flow, sub_term_id, onu_id);
    }
    if (gemport_id >= 0) {
        BCMBAL_CFG_PROP_SET(&cfg, flow, svc_port_id, gemport_id);
    }
    if (priority_value >= 0) {
        BCMBAL_CFG_PROP_SET(&cfg, flow, priority, priority_value);
    }

    {
        bcmbal_classifier val = { };

        if (classifier.o_tpid()) {
            val.o_tpid = classifier.o_tpid();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_O_TPID;
        }

        if (classifier.o_vid()) {
            val.o_vid = classifier.o_vid();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_O_VID;
        }

        if (classifier.i_tpid()) {
            val.i_tpid = classifier.i_tpid();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_I_TPID;
        }

        if (classifier.i_vid()) {
            val.i_vid = classifier.i_vid();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_I_VID;
        }

        if (classifier.o_pbits()) {
            val.o_pbits = classifier.o_pbits();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_O_PBITS;
        }

        if (classifier.i_pbits()) {
            val.i_pbits = classifier.i_pbits();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_I_PBITS;
        }

        if (classifier.eth_type()) {
            val.ether_type = classifier.eth_type();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_ETHER_TYPE;
        }

        /*
        if (classifier.dst_mac()) {
            val.dst_mac = classifier.dst_mac();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_DST_MAC;
        }

        if (classifier.src_mac()) {
            val.src_mac = classifier.src_mac();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_SRC_MAC;
        }
        */

        if (classifier.ip_proto()) {
            val.ip_proto = classifier.ip_proto();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_IP_PROTO;
        }

        /*
        if (classifier.dst_ip()) {
            val.dst_ip = classifier.dst_ip();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_DST_IP;
        }

        if (classifier.src_ip()) {
            val.src_ip = classifier.src_ip();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_SRC_IP;
        }
        */

        if (classifier.src_port()) {
            val.src_port = classifier.src_port();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_SRC_PORT;
        }

        if (classifier.dst_port()) {
            val.dst_port = classifier.dst_port();
            val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_DST_PORT;
        }

        if (!classifier.pkt_tag_type().empty()) {
            if (classifier.pkt_tag_type().compare("untagged") == 0) {
                val.pkt_tag_type = BCMBAL_PKT_TAG_TYPE_UNTAGGED;
                val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_PKT_TAG_TYPE;
            } else if (classifier.pkt_tag_type().compare("single_tag") == 0) {
                val.pkt_tag_type = BCMBAL_PKT_TAG_TYPE_SINGLE_TAG;
                val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_PKT_TAG_TYPE;
            } else if (classifier.pkt_tag_type().compare("double_tag") == 0) {
                val.pkt_tag_type = BCMBAL_PKT_TAG_TYPE_DOUBLE_TAG;
                val.presence_mask = val.presence_mask | BCMBAL_CLASSIFIER_ID_PKT_TAG_TYPE;
            }
        }

        BCMBAL_CFG_PROP_SET(&cfg, flow, classifier, val);
    }

    {
        bcmbal_action val = { };

        const ::openolt::ActionCmd& cmd = action.cmd();

        if (cmd.add_outer_tag()) {
            val.cmds_bitmask |= BCMBAL_ACTION_CMD_ID_ADD_OUTER_TAG;
            val.presence_mask |= BCMBAL_ACTION_ID_CMDS_BITMASK;
        }

        if (cmd.remove_outer_tag()) {
            val.cmds_bitmask |= BCMBAL_ACTION_CMD_ID_REMOVE_OUTER_TAG;
            val.presence_mask |= BCMBAL_ACTION_ID_CMDS_BITMASK;
        }

        if (cmd.trap_to_host()) {
            val.cmds_bitmask |= BCMBAL_ACTION_CMD_ID_TRAP_TO_HOST;
            val.presence_mask |= BCMBAL_ACTION_ID_CMDS_BITMASK;
        }

        if (action.o_vid()) {
            val.o_vid = action.o_vid();
            val.presence_mask = val.presence_mask | BCMBAL_ACTION_ID_O_VID;
        }

        if (action.o_pbits()) {
            val.o_pbits = action.o_pbits();
            val.presence_mask = val.presence_mask | BCMBAL_ACTION_ID_O_PBITS;
        }

        if (action.o_tpid()) {
            val.o_tpid = action.o_tpid();
            val.presence_mask = val.presence_mask | BCMBAL_ACTION_ID_O_TPID;
        }

        if (action.i_vid()) {
            val.i_vid = action.i_vid();
            val.presence_mask = val.presence_mask | BCMBAL_ACTION_ID_I_VID;
        }

        if (action.i_pbits()) {
            val.i_pbits = action.i_pbits();
            val.presence_mask = val.presence_mask | BCMBAL_ACTION_ID_I_PBITS;
        }

        if (action.i_tpid()) {
            val.i_tpid = action.i_tpid();
            val.presence_mask = val.presence_mask | BCMBAL_ACTION_ID_I_TPID;
        }

        BCMBAL_CFG_PROP_SET(&cfg, flow, action, val);
    }

    if ((access_intf_id >= 0) && (onu_id >= 0)) {
        bcmbal_tm_sched_id val;
        if (sched_id != 0) {
            val = sched_id;
        } else {
            val = (bcmbal_tm_sched_id) mk_sched_id(access_intf_id, onu_id);
        }
        BCMBAL_CFG_PROP_SET(&cfg, flow, dba_tm_sched_id, val);

        if (key.flow_type == BCMBAL_FLOW_TYPE_DOWNSTREAM) {
            bcmbal_tm_queue_ref val = { };
            val.sched_id = access_intf_id << 7 | onu_id;
            val.queue_id = 0;
            BCMBAL_CFG_PROP_SET(&cfg, flow, queue, val);
        }
    }

    err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(cfg.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id,  "Flow add failed\n");
        return bcm_to_grpc_err(err, "flow add failed");
    }

    // register_new_flow(key);

    return Status::OK;
}

Status FlowRemove_(uint32_t flow_id, const std::string flow_type) {

    bcmbal_flow_cfg cfg;
    bcmbal_flow_key key = { };

    key.flow_id = (bcmbal_flow_id) flow_id;
    key.flow_id = flow_id;
    if (flow_type.compare("upstream") == 0 ) {
        key.flow_type = BCMBAL_FLOW_TYPE_UPSTREAM;
    } else if (flow_type.compare("downstream") == 0) {
        key.flow_type = BCMBAL_FLOW_TYPE_DOWNSTREAM;
    } else {
        BCM_LOG(WARNING, openolt_log_id, "Invalid flow type %s\n", flow_type.c_str());
        return bcm_to_grpc_err(BCM_ERR_PARM, "Invalid flow type");
    }

    BCMBAL_CFG_INIT(&cfg, flow, key);


    bcmos_errno err = bcmbal_cfg_clear(DEFAULT_ATERM_ID, &cfg.hdr);
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Error %d while removing flow %d, %s\n",
            err, flow_id, flow_type.c_str());
        return Status(grpc::StatusCode::INTERNAL, "Failed to remove flow");
    }

    BCM_LOG(INFO, openolt_log_id, "Flow %d, %s removed\n", flow_id, flow_type.c_str());
    return Status::OK;
}

Status SchedAdd_(int intf_id, int onu_id, int agg_port_id, int sched_id, int pir) {

    bcmos_errno err;

    /* Downstream */

    /* Create subscriber's tm_sched */
    {
        bcmbal_tm_sched_cfg cfg;
        bcmbal_tm_sched_key key = { };
        key.dir = BCMBAL_TM_SCHED_DIR_DS;
        key.id = intf_id << 7 | onu_id;
        BCMBAL_CFG_INIT(&cfg, tm_sched, key);

        bcmbal_tm_sched_owner owner = { };
        owner.type = BCMBAL_TM_SCHED_OWNER_TYPE_SUB_TERM;
        owner.u.sub_term.intf_id = intf_id;
        owner.u.sub_term.sub_term_id = onu_id;
        BCMBAL_CFG_PROP_SET(&cfg, tm_sched, owner, owner);

        bcmbal_tm_sched_parent parent = { };
        parent.sched_id = intf_id + BAL_RSC_MANAGER_BASE_TM_SCHED_ID;
        parent.presence_mask = parent.presence_mask | BCMBAL_TM_SCHED_PARENT_ID_SCHED_ID;
        parent.weight = 1;
        parent.presence_mask = parent.presence_mask | BCMBAL_TM_SCHED_PARENT_ID_WEIGHT;
        BCMBAL_CFG_PROP_SET(&cfg, tm_sched, sched_parent, parent);

        BCMBAL_CFG_PROP_SET(&cfg, tm_sched, sched_type, BCMBAL_TM_SCHED_TYPE_WFQ);

        bcmbal_tm_shaping shaping = { };
        shaping.pir = pir;
        shaping.presence_mask = shaping.presence_mask | BCMBAL_TM_SHAPING_ID_PIR;
        BCMBAL_CFG_PROP_SET(&cfg, tm_sched, rate, shaping);

        err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &cfg.hdr);
        if (err) {
            BCM_LOG(ERROR, openolt_log_id, "Failed to create subscriber downstream sched, id %d, intf_id %d, onu_id %d\n",
                key.id, intf_id, onu_id);
            return bcm_to_grpc_err(err, "Failed to create subscriber downstream sched");
        }
    }

    /* Create tm_queue */
    {
        bcmbal_tm_queue_cfg cfg;
        bcmbal_tm_queue_key key = { };
        key.sched_id = intf_id << 7 | onu_id;
        key.sched_dir = BCMBAL_TM_SCHED_DIR_DS;
        key.id = 0;

        BCMBAL_CFG_INIT(&cfg, tm_queue, key);
        BCMBAL_CFG_PROP_SET(&cfg, tm_queue, weight, 1);
        err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &cfg.hdr);

        if (err) {
            BCM_LOG(ERROR, openolt_log_id, "Failed to create subscriber downstream tm queue, id %d, sched_id %d, intf_id %d, onu_id %d\n",
                key.id, key.sched_id, intf_id, onu_id);
            return bcm_to_grpc_err(err, "Failed to create subscriber downstream tm queue");
        }

    }

    /* Upstream */

    bcmbal_tm_sched_cfg cfg;
    bcmbal_tm_sched_key key = { };
    bcmbal_tm_sched_type sched_type;

    if (sched_id != 0) {
        key.id = sched_id;
    } else {
    key.id = mk_sched_id(intf_id, onu_id);
    }
    key.dir = BCMBAL_TM_SCHED_DIR_US;

    BCMBAL_CFG_INIT(&cfg, tm_sched, key);

    {
        bcmbal_tm_sched_owner val = { };

        val.type = BCMBAL_TM_SCHED_OWNER_TYPE_AGG_PORT;
        val.u.agg_port.intf_id = (bcmbal_intf_id) intf_id;
	    val.u.agg_port.presence_mask = val.u.agg_port.presence_mask | BCMBAL_TM_SCHED_OWNER_AGG_PORT_ID_INTF_ID;
        val.u.agg_port.sub_term_id = (bcmbal_sub_id) onu_id;
        val.u.agg_port.presence_mask = val.u.agg_port.presence_mask | BCMBAL_TM_SCHED_OWNER_AGG_PORT_ID_SUB_TERM_ID;
	    val.u.agg_port.agg_port_id = (bcmbal_aggregation_port_id) agg_port_id;
	    val.u.agg_port.presence_mask = val.u.agg_port.presence_mask | BCMBAL_TM_SCHED_OWNER_AGG_PORT_ID_AGG_PORT_ID;

        BCMBAL_CFG_PROP_SET(&cfg, tm_sched, owner, val);
    }

    err = bcmbal_cfg_set(DEFAULT_ATERM_ID, &(cfg.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to create upstream DBA sched, id %d, intf_id %d, onu_id %d\n",
            key.id, intf_id,  onu_id);
        return bcm_to_grpc_err(err, "Failed to create upstream DBA sched");
    }
    BCM_LOG(INFO, openolt_log_id, "Create upstream DBA sched, id %d, intf_id %d, onu_id %d\n",
        key.id,intf_id,onu_id);

    return Status::OK;
}

Status SchedRemove_(int intf_id, int onu_id, int agg_port_id, int sched_id) {

    bcmos_errno err;

    /* Upstream */

    bcmbal_tm_sched_cfg tm_cfg_us;
    bcmbal_tm_sched_key tm_key_us = { };

    if (sched_id != 0) {
        tm_key_us.id = sched_id;
    } else {
    tm_key_us.id = mk_sched_id(intf_id, onu_id);
    }
    tm_key_us.dir = BCMBAL_TM_SCHED_DIR_US;

    BCMBAL_CFG_INIT(&tm_cfg_us, tm_sched, tm_key_us);

    err = bcmbal_cfg_clear(DEFAULT_ATERM_ID, &(tm_cfg_us.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to remove upstream DBA sched, id %d, intf_id %d, onu_id %d\n",
            tm_key_us.id, intf_id, onu_id);
        return Status(grpc::StatusCode::INTERNAL, "Failed to remove upstream DBA sched");
    }

    BCM_LOG(INFO, openolt_log_id, "Remove upstream DBA sched, id %d, intf_id %d, onu_id %d\n",
        tm_key_us.id, intf_id, onu_id);

    /* Downstream */

    // Queue

    bcmbal_tm_queue_cfg queue_cfg;
    bcmbal_tm_queue_key queue_key = { };
    queue_key.sched_id = intf_id << 7 | onu_id;
    queue_key.sched_dir = BCMBAL_TM_SCHED_DIR_DS;
    queue_key.id = 0;

    BCMBAL_CFG_INIT(&queue_cfg, tm_queue, queue_key);

    err = bcmbal_cfg_clear(DEFAULT_ATERM_ID, &(queue_cfg.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to remove downstream tm queue, id %d, sched_id %d, intf_id %d, onu_id %d\n",
            queue_key.id, queue_key.sched_id, intf_id, onu_id);
        return Status(grpc::StatusCode::INTERNAL, "Failed to remove downstream tm queue");
    }

    BCM_LOG(INFO, openolt_log_id, "Remove upstream DBA sched, id %d, sched_id %d, intf_id %d, onu_id %d\n",
        queue_key.id, queue_key.sched_id, intf_id, onu_id);

    // Sheduler

    bcmbal_tm_sched_cfg tm_cfg_ds;
    bcmbal_tm_sched_key tm_key_ds = { };
    tm_key_ds.dir = BCMBAL_TM_SCHED_DIR_DS;
    tm_key_ds.id = intf_id << 7 | onu_id;
    BCMBAL_CFG_INIT(&tm_cfg_ds, tm_sched, tm_key_ds);

    err = bcmbal_cfg_clear(DEFAULT_ATERM_ID, &(tm_cfg_ds.hdr));
    if (err) {
        BCM_LOG(ERROR, openolt_log_id, "Failed to remove sub downstream sched, id %d, intf_id %d, onu_id %d\n",
            tm_key_us.id, intf_id, onu_id);
        return Status(grpc::StatusCode::INTERNAL, "Failed to remove sub downstream sched");
    }

    BCM_LOG(INFO, openolt_log_id, "Remove sub downstream sched, id %d, intf_id %d, onu_id %d\n",
        tm_key_us.id, intf_id, onu_id);

    return Status::OK;
    //return 0;
}