[U-Boot] TCP & Overrrun

[dh at synoia.com]

On Thu, 8 Feb 2018 22:15:44 +0000 (UTC)
Duncan Hare <dh at synoia.com> wrote:

>  Duncan Hare
> 
> 714 931 7952
> 
>      
> ----- Forwarded Message -----
>  From: Joe Hershberger <joe.hershberger at ni.com>
>  To: Duncan Hare <dh at synoia.com> 
> Cc: u-boot <u-boot at lists.denx.de>; Joe Hershberger
> <joe.hershberger at ni.com> Sent: Thursday, February 8, 2018 11:40 AM
>  Subject: Re: [U-Boot] TCP & Overrrun
>    
> Hi Duncan,
> 
> On Wed, Feb 7, 2018 at 8:40 PM, Duncan Hare <dh at synoia.com> wrote:
> > I'm gettin overrun on the raspberry pi.
> >
> > Which ethernet drived does it use?  
> 
> You didn't specify which one you are talking about, but here's how to
> find out...
> 
> Assuming rpi3, find the config first...
> 
> configs/rpi_3_defconfig says:
> CONFIG_DEFAULT_DEVICE_TREE="bcm2837-rpi-3-b"
> arch/arm/dts/bcm2837-rpi-3-b.dts says: #include
> "bcm283x-rpi-smsc9514.dtsi" arch/arm/dts/bcm283x-rpi-smsc9514.dtsi
> says:                ethernet: usbether at 1 {
> compatible = "usb424,ec00"; grep -rn ec00 drivers/ says:
> drivers/usb/eth/smsc95xx.c
> 
> Cheers,
> -Joe
> 
> > I need to determine if it
> > uses CONFIG_SYS_RX_ETH_BUFFER" from net.h and the "net_rx_packets"
> > buffer pool defined in net/net.c
> >
> > Thanks
> >
> > Duncan Hare
> > _______________________________________________
> > U-Boot mailing list
> > U-Boot at lists.denx.de
> > https://lists.denx.de/listinfo/u-boot  
> 
Joe

Thanks

It's is more push down stack buffer management than circular. Small
change to fix. No more starting at zero.

I like buffer pools with a size of power of 2. Easy to make circular
with an & of the power of 2-1 on the index.

Duncan