Hi Can any body .. answer me for this query that i have posted..
I have treied increasing the IP_REASS_MAX_PBUFS and the PBUF_POOL_SIZE but
it didnt work out. It is always going to Assert statement in pbuf_header in
pbuf.c at line
if (header_size_increment < 0){
increment_magnitude = -header_size_increment;
/* Check that we aren't going to move off the end of the pbuf */
LWIP_ERROR("increment_magnitude <= p->len", (increment_magnitude <=
p->len),
return 1;);
}
Please do the need ful.
Thanks
On Fri, Mar 20, 2009 at 9:15 PM, Arun <[email protected]> wrote:
>
> URL:
> <http://savannah.nongnu.org/bugs/?25940>
>
> Summary: Regarding the Fragmentation issue in the ICMP
> packet.
> Project: lwIP - A Lightweight TCP/IP stack
> Submitted by: arun_rh
> Submitted on: Fri 20 Mar 2009 03:45:28 PM GMT
> Category: None
> Severity: 3 - Normal
> Item Group: Faulty Behaviour
> Status: None
> Privacy: Public
> Assigned to: None
> Open/Closed: Open
> Discussion Lock: Any
> Planned Release:
> lwIP version: 1.3.0
>
> _______________________________________________________
>
> Details:
>
> Hello All,
> Currently I am working on the LWIP stack, which we have ported on to the
> STR912 processor.
> Actually I am facing a strange problem of reassembling process of
> Fragmented
> ICMP packet.
> My observation was the ping utility is failing at higher packet size (more
> than 1472 ) say1500.
> But the same works if we send the ping command less than 1472.
> So I understand that when ever we send the ping command with more than 1472
> bytes, it basically splits the packet into and the same Is reassembled on
> the
> LWIP stack. I saw the sender sends the ping command with fragmented
> messages.
>
>
> These fragmented messages are received on the STR912 that is our target
> where
> the LWIP stack will be running.
>
> So the LWIP while in the process of reassembling it is going to some Assert
> statement. Actually it is going to some assert statement in pbuf_header()
> function in the pbuf.c file and the code is
>
> if (header_size_increment < 0){
>
> increment_magnitude = -header_size_increment;
>
> /* Check that we aren't going to move off the end of the pbuf */
>
> LWIP_ERROR("increment_magnitude <= p->len", (increment_magnitude <=
> p->len), return 1;);
>
> }
>
> I have seen one of the mail asking the same question for the solution in
> 2006. So could u please suggest me whether the issue of reassembling
> process
> and the fragmentation is fixed or not. Currently I am using the 1.0.3
> version.
> Does the LWIP stack is tested with the Ping utility with more than 10000
> bytes
> ?
>
>
> Thanks
>
> With Regards
>
> Arun Honnappa
>
>
>
>
>
> _______________________________________________________
>
> Reply to this item at:
>
> <http://savannah.nongnu.org/bugs/?25940>
>
> _______________________________________________
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> http://savannah.nongnu.org/
>
>
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