Re: [lwip-users] Bug in snd_buf calculation

[Leon Woestenberg]

Hello Curt, Jan,

Jan Ulvesten wrote:
> I posted an earlier bug report related this topic. 
>
>   
We have a hard time finding any maintainers that carefully inspect, 
accept and apply patches or investigate bug fixes. So at this time, only 
self-contained patches (i.e. a bug report, solution proposal and patch 
in one) make it into CVS easily, the rest seem to get dangling around.
> snd_buf may be "lost" due to this correction. The alignment code takes
>   
I am confused what you mean by 'this correction'. Do you mean the 
year-old fix that Curt refered to?

> one byte of extra space out of the send buffer if the content is odd.
> The idea was that the ack routine should correct this.  It works fine as
> long as every single packets is ackd. If the ack routine acks two or
> more packets it may actually not give the extra byte back (if acking an
> even number of bytes when two odd byte packets has been sent).
>   
Could you discuss how to proceed with a proper fix for this?

Thanks,

regards,

Leon.