On Tue, 12 Aug 2003 23:09:51 +0200
Jeroen Vreeken [off-list ref] wrote:

Since at the moment the only zero-copy path I can imagine is from packets
over a bpq ethernet device wouldn't it be the easiest to just check at
ax25_rcv() for non-linear packets and call skb_linearize() for them?

skb_linearize() is a deprecated interface, no new pieces of
code should use it.  If you want to mark the protocol as a new
one you must do the non-linear handling properly just like every
other protocol.

Please, if you're going to be working in this area, fix this up properly
and don't paper around the problems Stephen is showing to you.