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NECTP configuration for header removal

Hello,

 

I am experimenting the following problem in using NETCP over Keystone2.

 

NETCP is programmed to decode a LTE bearer composed by Ethernet + UPD + GTP-U + payload over slowPath (enableFastPath = 0)

   Netfp_DRBRxCfg.bearerId       = bid;

   Netfp_DRBRxCfg.chDrbEnc       = pdcp_layer.drbEncQueueHandle;

   Netfp_DRBRxCfg.countC         = COUNT;

   Netfp_DRBRxCfg.enableFastPath = false;

   Netfp_DRBRxCfg.gtpuId         = gtpuId;

   Netfp_DRBRxCfg.slowPathFlowHandle = saFlowHandle;

   Netfp_DRBRxCfg.chDrbRohc          = pdcp_layer.gtpuFPQueueHandle;

   Netfp_DRBRxCfg.drbEncFlowHandle   = saFlowHandle;

   Netfp_DRBRxCfg.ueId              = rnti;

   Netfp_DRBRxCfg.userSecHandle     = userSecHandle;

 

Packet is correctly received and payload matches, but it is completely missing of Ethernet, UPD and GTP-U headers.

 

In my understanding header insertion/removal is a functionality offered by PA2 of NETCP on K2E, then I am missing something in the configuration, but I cannot spot what.

I was able to obtain the headers by changing Netfp_configureRemoveHeader inside the Netfp_init function of NETFP original driver, to program only trailing removal:

    paCmdInfo[0].cmd = pa_CMD_REMOVE_TAIL;

 

    /* Configure 1 command sets */

    if (Netfp_configCommandSet (9, 1, &paCmdInfo[0]) < 0)

        return -1;

 

But this should be only related to fastpath, or not?

 

Feedbacks appreciated.

 

Thanks

Regards

Stefano