RTOS|AM437x 多网口(CPSW和PRU-ICSS)NDK TCP通讯问题

TI专家好。

我有个项目需要同时用到AM437x的CPSW网口(千兆)和两个PRU-ICSS网口(100M，当做普通网口使用)，目前我已经根据NIMU_BasicExample和NIMU_ICSS_BasicExample两个例程合并修改，现已实现三个网口的配置和IP地址分配，每个网口单独均可ping通，但是现在有一个比较奇怪的现象，还请各位专家多多指教。

PRU-ICSS1网口配置代码如下

   /*ICSS-EMAC Port 1 initializations*/
    emacHandle1 = (ICSS_EmacHandle)malloc(sizeof(ICSS_EmacConfig));
    switchEmacCfg1 = (ICSS_EmacInitConfig*)malloc(sizeof(ICSS_EmacInitConfig));

    switchEmacCfg1->phyAddr[0]=0;
    switchEmacCfg1->phyAddr[1]=0;
    switchEmacCfg1->portMask = ICSS_EMAC_MODE_MAC1;
    switchEmacCfg1->ethPrioQueue = ICSS_EMAC_QUEUE1;
    switchEmacCfg1->halfDuplexEnable = 1;
    switchEmacCfg1->enableIntrPacing = ICSS_EMAC_ENABLE_PACING;
    switchEmacCfg1->ICSS_EmacIntrPacingMode = ICSS_EMAC_INTR_PACING_MODE1;
    switchEmacCfg1->pacingThreshold = 100;
    switchEmacCfg1->learningEn = 0;
    switchEmacCfg1->rxIntNum = 52;   //PRU_ICSS1_EVTOUT0
    switchEmacCfg1->linkIntNum=58;  //PRU_ICSS1_EVTOUT6
    SOCCtrlGetPortMacAddr(1,MacAddr1); //获取MAC地址
    switchEmacCfg1->macId = MacAddr1;
    ICSSEmacDRVInit(emacHandle1, 1);

    ((ICSS_EmacObject*)emacHandle1->object)->pruIcssHandle = pruIcssHandle;
    ((ICSS_EmacObject*)emacHandle1->object)->emacInitcfg = switchEmacCfg1;

    //中断及EMAC模式配置
    PRUICSS_IntcInitData pruss_intc_initdata = PRUSS_INTC_INITDATA;
    ICSS_EmacInit(emacHandle1,&pruss_intc_initdata,ICSS_EMAC_MODE_MAC1|ICSS_EMAC_MODE_DUALMAC);

    //创建Rx接收事件
    Task_Params taskParams;
    Task_Params_init(&taskParams);
    taskParams.priority = 10;
    taskParams.instance->name = (char*)"port1_rxTaskFnc";
    taskParams.stackSize = 0x1000;
    taskParams.arg0 = (UArg)emacHandle1;
    ((ICSS_EmacObject*)emacHandle1->object)->rxTaskHandle = Task_create(ICSS_EMacOsRxTaskFnc, &taskParams, NULL);

PRU-ICSS2网口配置代码如下：

    /*ICSS-EMAC PORT2 Initializations*/
    emacHandle2 = (ICSS_EmacHandle)malloc(sizeof(ICSS_EmacConfig));
    switchEmacCfg2 = (ICSS_EmacInitConfig*)malloc(sizeof(ICSS_EmacInitConfig));

    switchEmacCfg2->phyAddr[0]= 1;
    switchEmacCfg2->phyAddr[1]= 0;
    switchEmacCfg2->portMask = ICSS_EMAC_MODE_MAC2;
    switchEmacCfg2->ethPrioQueue = ICSS_EMAC_QUEUE3;
    switchEmacCfg2->halfDuplexEnable = 1;
    switchEmacCfg2->enableIntrPacing = ICSS_EMAC_DISABLE_PACING;
    switchEmacCfg2->pacingThreshold = 100;
    switchEmacCfg2->learningEn = 0;
    switchEmacCfg2->rxIntNum = 53;  //PRU_ICSS1_EVTOUT1
    switchEmacCfg2->linkIntNum=59; //PRU_ICSS1_EVTOUT7
    SOCCtrlGetPortMacAddr(2,MacAddr2); //获取MAC地址
    switchEmacCfg2->macId = MacAddr2;
    ICSSEmacDRVInit(emacHandle2,1);

    ((ICSS_EmacObject*)emacHandle2->object)->pruIcssHandle = pruIcssHandle;
    ((ICSS_EmacObject*)emacHandle2->object)->emacInitcfg = switchEmacCfg2;

    //中断及EMAC模式配置
    PRUICSS_IntcInitData pruss_intc_initdata = PRUSS_INTC_INITDATA;
    ICSS_EmacInit(emacHandle2,&pruss_intc_initdata,ICSS_EMAC_MODE_MAC2|ICSS_EMAC_MODE_DUALMAC);

    //创建Rx接收事件
    Task_Params taskParams;
    Task_Params_init(&taskParams);
    taskParams.priority = 10;
    taskParams.instance->name = (char*)"port2_rxTaskFnc";
    taskParams.stackSize = 0x1000;
    taskParams.arg0 = (UArg)emacHandle2;
    ((ICSS_EmacObject*)emacHandle2->object)->rxTaskHandle = Task_create(ICSS_EMacOsRxTaskFnc, &taskParams, NULL);

三个网口与NIMUDeviceTable对应关系如下：

//设置NIMUDeviceTable入口
OSDRV_addNetifEntry((NIMUInitFn)&EmacInit,emacHandle1);   //PRU-ETH0
OSDRV_addNetifEntry((NIMUInitFn)&EmacInit,emacHandle2);  //PRU-ETH1
OSDRV_addNetifEntry((NIMUInitFn)&CpswEmacInit,0);  //CPSW

//TCP

void netOpenHook()

{
// Create our local servers
hEcho = DaemonNew( SOCK_STREAMNC, 0, 502, dtask_tcp_echo,
OS_TASKPRINORM, OS_TASKSTKNORM, 0, 3 );

}

问题在于：上述配置完成后，虽然可以ping通，但无法进行TCP通讯，dtask_tcp_echo无任何响应。如果将CPSW入口删除则dtask_tcp_echo执行正常，单独运行NIMU_BasicExample例程也没有问题。

还请TI各位专家帮忙解答，问题出在哪里？应如何查找？