Ed Sutter wrote:
Jonathan Larmour wrote:
Ah I see in the implementation of pbuf_header, that it can't expand
PBUF_REFs to the front. That will be your problem.
I think the only reason it doesn't do it is because there's no way to
sanity check that it's a valid thing to do.
Hmmmm...
If I can't use PBUF_RAW/PBUF_REF to allocate the pbuf, then does that
mean I have no choice but to do the loop of memcpy's like this...
[snip]
Or is there some other way to avoid that copy loop?
I think the better answer for you would be to adjust the PBUF_REF case in
pbuf_header() to allow PBUF_REF pbufs to be expanded to the front.
I'm undecided whether that would be a good change to have in the master
code base.
Jifl
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