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RE: [lwip-devel] IP fragmentation


From: Goldschmidt Simon
Subject: RE: [lwip-devel] IP fragmentation
Date: Wed, 9 May 2007 08:21:43 +0200

>I'm looking at the code to do the IP reassembly, and notice that it
appears
>that it is only able to handle a single fragmented payload at a time.
Is
>this really true, or am I seeing things again?  If so, the
implementation
>is somewhat problematic in that if one of the fragments of an IP
datagram is
>lost, then the ip_reass_tmr has to expire before the stack can handle a
>fragment belonging to a new IP datagram.  By default, this timer is set
to
>expire every seconds.

As far as I can see, you're right. What also disturbs me is that,
because
there is only one reassembly-buffer, you can only receive fragmented
IP-packets
from one host at a time. That's because I didn't enable IP_REASSEMBLY...
Or am I wrong and this would never happen??

Simon
        
        
        





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