[PATCH 1/3] hdlc: allow for scanning and escaping

[Marcel Holtmann]

Hi Kristen,

> PPP needs to inspect the packet protocol to see if a character
> should be escaped.  Additionally, it needs to be able to compare
> against recv and xmit accm.

can we just set the ACCM values instead of having an extra function
call. I think that calling an extra function for every single byte is a
really bad idea and the compiler can not optimize it at all.

Regards

Marcel