Re: [lwip-users] Strange packet sizes in receive-callback

[Bill Auerbach]

Hi,

Could be a packet chain (pbuf chain) of 8 packets.  The "some crap" part is
not good and probably means the driver needs some scrutiny for times when
it's being pushed.

Bill

-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of Satz Klauer
Sent: Friday, January 03, 2014 3:44 PM
To: Mailing list for lwIP users
Subject: [lwip-users] Strange packet sizes in receive-callback

Hi,

I'm new to lwIP, so hopefully my question is not too stupid.

I'm sending huge amounts of data to my BeagleBone Black where a lwIP
implementation is running. Due to that within my receive callback I get
repeatedly packets with a size of 1460 bytes (which should be some TCP
segment/framesize?).

This works mainly well...but sometimes a packet with a bigger size is
received (e.g. 11680 bytes). This is bigger than the maximum possible size
and the memory contains some crap.

Any idea what the reason could be for this behaviour?

Thanks!

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