RE: [lwip-users] Checksum Incorrect caused by Concatenation

[Hervé GARAT : Audemat]

Kieran said:
>No, that's wrong.  p->len refers to the length of each individual pbuf.
>We've added another pbuf to the chain, but not changed the length of
>each pbuf.  Because the chain is longer, we increment the length of
>p->tot_len, but not the length of p->len.

But in the inet_chksum_pseudo function,the len used to make checksum is p->len 
and not p->tot_len. However the message sent is long as p->tot_len, therefore 
the TCP checksum is Incorrect!! 

All the other change that I made(queuelen-- ;pbuf_free(p->queuelen);...)are 
made to have a valid checksum if LWIP do a concatenation.

What's the best way to solve my problem?