Sorry, but I think those 1.3... are not of lwIP :(
Do I simply replace all the files in lwIP with the latest? Or there is a
better way to do it?
If I understand you correctly, I should be able to use
#define PBUF_POOL_SIZE 60
#define TCP_SND_BUF 30000
60x500=30000
but with these settings, I can't even connect to lwIP using telnet
Please see the capture on http://www.dataq.com/chen/pbuf_pool_size60.cap
Lowering PBUF_POOL_SIZE to 40 allows connection. Also the default was
#define PBUF_POOL_SIZE 6 and #define TCP_SND_BUF 2150, and 6x500>2150
Do I miss something else here?
Thanks
>>>>>>>>>>>>>>>
Chen schrieb:
I believe it is 1.3 since the soure codes have many reference for
1.3.6.1.2.1.xx (which definition should I search to be absolutely sure?)
1.3.6.1.2.1.xx??? Where's that from? Unfortunately, there is still no
version in the sources. It's a new "feature" just added in CVS HEAD.
Where to acquire the latest?
http://savannah.nongnu.org/projects/lwip/ -> Download
> I am confused:
>
*> "#define* PBUF_POOL_BUFSIZE 500" is not the packet size (I can see
packet of 1460 bytes from Wireshark), how does it affect the tx buffer?
Each buffer is 500 bytes long. A packet of 1460 bytes TCP data (plus some
headers, 1514 bytes totally) is thus made up of 4 pbufs from the pool *if*
these are used. For transmitting, PBUF_RAM is used, which is allocated from
the heap, the size of which is define with the define MEM_SIZE (in bytes).
Simon
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