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Last Post 11 Aug 2017 10:13 AM by  Adam Ford
Network mtu
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L DiRuscio
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10 Aug 2017 03:18 PM

    I am using the ip command to try and set the mtu to a value larger than 1500. Is this possible on the Torpedo Dev Kit? I keep getting an invalid parameter error if over 1500.
    Adam Ford
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    11 Aug 2017 07:15 AM
    I was able to confirm the same behaviour

    From what I can tell, the SMC911X driver calls eth_change_mtu() which is defined in net/ethernet/eth.c

    The does a comparison to make sure the MTU doesn't exceed ETH_DATA_LEN which is defined to be 1500

    This definition of ETH_DATA_LEN is located in include/linux/if_ether.h

    You could experiment with changing the value, but from what I read, for 100BT systems, this is usually nominal.

    adam

    L DiRuscio
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    11 Aug 2017 09:43 AM

    Thanks Adam.

    I will play with that def a bit today.

    In case it wont work, do you know of a suitable GigE chip, suitable meaning you can supply a driver?

    LD
    Adam Ford
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    11 Aug 2017 10:13 AM
    Unfortunately, the only reference design that we've tested for Ethernet with the DM3730 platform is the SMC911X. I talked to the engineer who designed the SOM and the development kit, and he is not aware of any either.

    adam

    Forums Texas Instruments SOMs and Development Kits OMAP35x, DM3730, AM3703 Torpedo SOM Development Kit
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