RX_LARGE_BUFFERS_EXHAUSTED

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RX_LARGE_BUFFERS_EXHAUSTED

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Mike_d
Contributor IV

What can I do if I get this error?  Can I increase the number of buffers?

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danielchen
NXP TechSupport
NXP TechSupport

Hi  Mike_d

The default value for large buffer is 0, you can increase this value according to your requirement.

Please refer to file mqx/source/bsp/[frdmk64f]/init_enet.c, I assume you are using frdmK64 board, the parameter is next to last, bold

const ENET_PARAM_STRUCT ENET_default_params[BSP_ENET_DEVICE_COUNT] = {
    {
        &ENET_0,
        Auto_Negotiate,
        ENET_OPTION_RMII | ENET_OPTION_PTP_MASTER_CLK
    #if BSPCFG_ENET_HW_TX_IP_CHECKSUM
        | ENET_OPTION_HW_TX_IP_CHECKSUM
    #endif
    #if BSPCFG_ENET_HW_TX_PROTOCOL_CHECKSUM
        | ENET_OPTION_HW_TX_PROTOCOL_CHECKSUM
    #endif
    #if BSPCFG_ENET_HW_RX_IP_CHECKSUM
        | ENET_OPTION_HW_RX_IP_CHECKSUM
    #endif
    #if BSPCFG_ENET_HW_RX_PROTOCOL_CHECKSUM
        | ENET_OPTION_HW_RX_PROTOCOL_CHECKSUM
    #endif
    #if BSPCFG_ENET_HW_RX_MAC_ERR
        | ENET_OPTION_HW_RX_MAC_ERR
    #endif        
        ,

        BSPCFG_TX_RING_LEN,   // # tx ring entries
        BSPCFG_TX_RING_LEN,   // # large tx packets
        ENET_FRAMESIZE,       // tx packet size
     
        BSPCFG_RX_RING_LEN,   // # rx ring entries
        BSPCFG_RX_RING_LEN,   // # normal rx packets - must be >= rx ring entries
        ENET_FRAMESIZE,       // ENET_FRAMESIZE,   // rx packet size
        BSPCFG_RX_RING_LEN,   // # rx PCBs - should be >= large rx packets.
     
        0,     // Daniel,   please change this value according to your requirement.
        0     
    },
};

I hope it helps.

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Have a great day,
Daniel