[ECOS] Fw: A problem about freebsd tcpip on lpc2290 and dm9000ep

[ECOS] Fw: A problem about freebsd tcpip on lpc2290 and dm9000ep

[usecool]

Hello all!

I am using eCos V3.0 on my lpc2290 board. 
My board have 2MB nor FLASH(0x80000000), 1MB SRAM(0x81000000),
DM9000EP(0x83000000, IRQ is EINT0).
I modify the phycore229x's bsp for my board, now it works.


But , i meet a problem, when it power on, I can ping the board, TTL is 1-2ms.
A TCP server thread for echo received data, it worked well.

After several minutes,  I ping the board, it will no reply
or the TTL over 1000ms. I use wireshark catch the packets, I find
the PC send arp request,but the board no arp replay, or replay pack 
will delay above 20~30seconds, The TCP thread worked deviant also.
But same time ,the timer, TTY worked well.

can anyone help me? Thanks!

Brg
Jeff Liang
2010-03-24 


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[ECOS] A problem about freebsd tcpip on lpc2290 and dm9000ep

[usecool]

It sames that I post failure. I post again.

Hello all!
I am using eCos V3.0 on my lpc2290 board. 
My board have 2MB nor FLASH(0x80000000), 1MB SRAM(0x81000000),
DM9000EP(0x83000000, IRQ is EINT0).
I modify the phycore229x's bsp for my board, now it works.
But , i meet a problem, when it power on, I can ping the board, TTL is 1-2ms.
A TCP server thread for echo received data, it worked well.
After several minutes,  I ping the board, it will no reply
or the TTL over 1000ms. I use wireshark catch the packets, I find
the PC send arp request,but the board no arp replay, or replay pack 
will delay above 20~30seconds, The TCP thread worked deviant also.
But same time ,the timer, TTY worked well.
can anyone help me? Thanks!
Brg
Jeff Liang
2010-03-24 


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Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

[ECOS] Re: A problem about freebsd tcpip on lpc2290 and dm9000ep

[John Dallaway]

Hi Jeff

usecool wrote:

> I am using eCos V3.0 on my lpc2290 board. 
> My board have 2MB nor FLASH(0x80000000), 1MB SRAM(0x81000000),
> DM9000EP(0x83000000, IRQ is EINT0).
> I modify the phycore229x's bsp for my board, now it works.
> But , i meet a problem, when it power on, I can ping the board, TTL is 1-2ms.
> A TCP server thread for echo received data, it worked well.
> After several minutes,  I ping the board, it will no reply
> or the TTL over 1000ms. I use wireshark catch the packets, I find
> the PC send arp request,but the board no arp replay, or replay pack 
> will delay above 20~30seconds, The TCP thread worked deviant also.
> But same time ,the timer, TTY worked well.
> can anyone help me? Thanks!

A common cause of large _TCP_ delays is that the configured maximum
number of open sockets (CYGPKG_NET_MAXSOCKETS for eCos FreeBSD stack)
has been exceeded. Note that socket resources are not released for
re-use until some considerable time (2*MSL) after a socket is closed.

This doesn't explain all the behaviour you report, but worth mentioning...

John Dallaway
eCos maintainer

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