gtl_config_csme_triple_slave.c shows the GTL configuration for 3 Slave mode devices controled over CSME (ETH).

/*============================================================================
 *      COPYRIGHT(c) 2008 Mindspeed Technologies.
 *  File Purpose : GTL CSME configuration for a Master mode device
 *  Module       : GTL
============================================================================*/
/*this configuration described a 3 MSP slave setup.
The Host controls the MSPs from eth0 interface */

#include "gtl_config.h"

/* default values used in default_device_configuration */
#define DEVICE_CONTROL_SLAVE_1_MAC              {0x00,0x11,0x22,0x33,0x44,0x66} 
#define DEVICE_CONTROL_SLAVE_2_MAC              {0x00,0x11,0x22,0x33,0x44,0x77} 
#define DEVICE_CONTROL_SLAVE_3_MAC              {0x00,0x11,0x22,0x33,0x44,0x88} 
#define HOST_CONTROL_SLAVE_INTERFACE            "eth0"
#define MAX_STRING_INTERFACE_NAME       20

/* Structure to define the default values for the device configuration  */
static SCSMEUsrData gtl_device_configuration_1 = {
        NULL,                   /* pointer to next device */
        eCSM_ITF,               /* control interface type to use */
        0,                      /* device ID */
        0,                      /* Version information (not used) */
        eSLAVE,                 /* Slave / Master mode */
        DEV_TYPE_M827XX,        /* Other Slave Device type DEV_TYPE_M823XX, DEV_TYPE_M825XX, DEV_TYPE_M826XX, DEV_TYPE_M829XX */
        True,                   /* Default or custom max channels */
        0,                      /* Max Channels if above flag is custom */
        DEVICE_CONTROL_SLAVE_1_MAC,     /* MAC address assigned to the device for control over csmencaps */
        {0x00,0x00,0x00,0x00,0x00,0x00}, /* Control Mac address interface. It is filled by the UT_GetInterfaceMac()
                                        In master mode this MAC is the eth1 MAC*/
        (char *)HOST_CONTROL_SLAVE_INTERFACE,   /* host interface used to control the device */
        1                       /* csme ack required */
};

static SCSMEUsrData gtl_device_configuration_2 = {
        NULL,                   /* pointer to next device */
        eCSM_ITF,               /* control interface type to use */
        1,                      /* device ID */
        0,                      /* Version information (not used) */
        eSLAVE,                 /* Slave / Master mode */
        DEV_TYPE_M827XX,        /* Other Slave Device type DEV_TYPE_M823XX, DEV_TYPE_M825XX, DEV_TYPE_M826XX, DEV_TYPE_M829XX */
        True,                   /* Default or custom max channels */
        0,                      /* Max Channels if above flag is custom */
        DEVICE_CONTROL_SLAVE_2_MAC,     /* MAC address assigned to the device for control over csmencaps */
        {0x00,0x00,0x00,0x00,0x00,0x00}, /* Control Mac address interface. It is filled by the UT_GetInterfaceMac()
                                        In master mode this MAC is the eth1 MAC*/
        (char *)HOST_CONTROL_SLAVE_INTERFACE,   /* host interface used to control the device */
        1                       /* csme ack required */
};

static SCSMEUsrData gtl_device_configuration_3 = {
        NULL,                   /* pointer to next device */
        eCSM_ITF,               /* control interface type to use */
        2,                      /* device ID */
        0,                      /* Version information (not used) */
        eSLAVE,                 /* Slave / Master mode */
        DEV_TYPE_M827XX,        /* Other Slave Device type DEV_TYPE_M823XX, DEV_TYPE_M825XX, DEV_TYPE_M826XX, DEV_TYPE_M829XX */
        True,                   /* Default or custom max channels */
        0,                      /* Max Channels if above flag is custom */
        DEVICE_CONTROL_SLAVE_3_MAC,     /* MAC address assigned to the device for control over csmencaps */
        {0x00,0x00,0x00,0x00,0x00,0x00}, /* Control Mac address interface. It is filled by the UT_GetInterfaceMac()
                                        In master mode this MAC is the eth1 MAC*/
        (char *)HOST_CONTROL_SLAVE_INTERFACE,   /* host interface used to control the device */
        1                       /* csme ack required */
};

void set_gtl_config(void)
{
        SCSMEUsrData *this_device;

        /* chain devices configuration (if any) */
        gtl_device_configuration_1.pvNext = &gtl_device_configuration_2;
        gtl_device_configuration_2.pvNext = &gtl_device_configuration_3;
        gtl_device_configuration_3.pvNext = NULL;

        /* this function is defined in ut.c file; it retrieves the mac address from the net interface name*/
        UT_GetInterfaceMac(gtl_device_configuration_1.pucEthDevName, (char *)gtl_device_configuration_1.aucHostMac);
        UT_GetInterfaceMac(gtl_device_configuration_1.pucEthDevName, (char *)gtl_device_configuration_2.aucHostMac);
        UT_GetInterfaceMac(gtl_device_configuration_1.pucEthDevName, (char *)gtl_device_configuration_3.aucHostMac);

        /* print the configuation of the device(s) */
        this_device = &gtl_device_configuration_1;
        do
        {
                printf("======================================================\n");
                printf("CONTROL_INTERFACE_TYPE  = %d\n", this_device->usControlInterface);
                printf("DEVICE_ID    = %d\n", this_device->uiDevId);
                printf("DEVICE_MODE  = %d\n", this_device->eDevMode);
                printf("DEVICE_TYPE  = %d\n", this_device->ucDevType);
                printf("USE_DEFAULT_MAX_CHANNEL = %d\n", this_device->bUseDefaultMaxChnls);
                printf("CUSTOM_MAX_CHANNEL = %d\n", this_device->usMaxChannels);
                printf("ACK_REQUIRED = %d\n", this_device->ucIsAckReqd);
                printf("DEVICE MAC   = %02x:%02x:%02x:%02x:%02x:%02x\n", this_device->aucDevMac[0],
                                                                        this_device->aucDevMac[1],
                                                                        this_device->aucDevMac[2],
                                                                        this_device->aucDevMac[3],
                                                                        this_device->aucDevMac[4],
                                                                        this_device->aucDevMac[5]);
                printf("HOST MAC   = %02x:%02x:%02x:%02x:%02x:%02x\n", this_device->aucHostMac[0],
                                                                        this_device->aucHostMac[1],
                                                                        this_device->aucHostMac[2],
                                                                        this_device->aucHostMac[3],
                                                                        this_device->aucHostMac[4],
                                                                        this_device->aucHostMac[5]);
                printf("HOST_CONTROL_INTERFACE, %s\n", this_device->pucEthDevName);
                this_device = this_device->pvNext;
        } while (this_device != NULL);

}

....
        VAPI_Init(&gtl_device_configuration_1)
....