Re: [ATM] who 'owns' the skb created by drivers/atm?

From: Mitchell Blank Jr (mitch@sfgoth.com)
Date: Fri Feb 21 2003 - 01:12:55 EST


David S. Miller wrote:
> On Thu, 2003-02-20 at 17:42, James Morris wrote:
> > skb->cb is owned by whatever layer is currently processing the skb.
>
> Furthermore, once you netif_rx() an SKB it is no longer yours.
> It is owned by the networking stack.
>
> If the ATM layer wants to do fancy things and still pass the SKB
> to netif_rx(), _it_ should clone the SKB and give that clone to
> the ATM layer directly.

As far as I'm aware the ATM layer doesn't care what happens to the
SKB after it gets passed to netif_rx(), so I don't know why this would
be a problem. Some people seem to be suggesting that we need to zero
out ->cb before passing the SKB to netif_rx() but I don't see why
that would be neccesary.

-Mitch
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sun Feb 23 2003 - 22:00:32 EST