[U-Boot] [PATCH] colibri_t30: fix usb ethernet functionality

[Joe Hershberger]

Hi Marcel,

On Fri, Sep 9, 2016 at 9:20 PM, Marcel Ziswiler
<marcel.ziswiler at toradex.com> wrote:
> Since commit aa7a648747d8c704a9a81c9e493d386930724e9d
> ("net: Stop including NFS overhead in defragment max") the following
> has been reproducibly observed while trying to transfer data over TFTP:
>
> Load address: 0x80408000
> Loading: EHCI timed out on TD - token=0x8008d80
> T EHCI timed out on TD - token=0x88008d80
> Rx: failed to receive: -5
>
> This patch fixes this by upping our maximal de-fragmentation aka IP
> packet size again.
>
> Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
>
> ---
>
>  include/configs/colibri_t30.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/include/configs/colibri_t30.h b/include/configs/colibri_t30.h
> index fbb235d..3431cde 100644
> --- a/include/configs/colibri_t30.h
> +++ b/include/configs/colibri_t30.h
> @@ -48,6 +48,7 @@
>
>  /* General networking support */
>  #define CONFIG_IP_DEFRAG
> +#define CONFIG_NET_MAXDEFRAG           (16384 + 4096 + 24)

I suspect this is more than you need, right? You are using TFTP, not
NFS. You probably only need an extra 34 bytes.

>  #define CONFIG_TFTP_BLOCKSIZE          16384

You could also just reduce this by 34 bytes.

>  #define CONFIG_TFTP_TSIZE
>
> --
> 2.5.5
>
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