Re: [PATCH] Move shaper control information into skb->cb

[kuznet@xxxxxxxxxxxxx]

Hello!

> Some ATM drivers use it, e.g. see at the end of drivers/atm/eni.h

They will not correlate. In fact, cb can be consideerd invalid when it
intersects dev->hard_start_xmit(). So that both shaper and any other device
may use it as they desire, provided they do not assume anything about
its content on entry.

BTW, Werner, it is exaclty why I objected against putting
skb->tc_index to cb.

BTW#2, qdiscs sort of sch_atm could use cb to pass some tags,
but in this case they are supposed to have a private entry
to corresponding device, and should guarantee that this tag
will not be used occasionally on packet, not passed though sch_atm.

Alexey