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[lwip-users] lwipopts.h, how to enlarge send and receive packet size

From: LP/李
Subject: [lwip-users] lwipopts.h, how to enlarge send and receive packet size
Date: Fri, 12 Jul 2013 09:42:59 +0900

Dear all:
I am new one in this group.
Very glad to know your all.
I use Stellaris and I use the open source (from TI homepage) for driver.
Sometimes,  my stellaris need to send or receive large size packet (almost 1200byte).
However, the buffer size is defined  as
        #define PBUF_POOL_BUFSIZE 256 
in "lwipopts.h".
Now, my stellaris can send packet as large as 1200 byte but it can NOT receive packet (1200bytes).
and I do not know the reason.
I have 1 question. 
When I send a packet (1200 bytes), and the "#define PBUF_POOL_BUFSIZE 256",
the first 256 packets are saved in the buffer and
the rest 1200-256 bytes overflow the buffer size and not correctly saved.
Is my comprehension above correct?
Is it possible to configure the PBUF_POOL_BUFSIZE and PBUF_POOL_SIZE to send and receive packet as large as 1200 bytes.
Thanks in advance and sorry for interruption.
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