Re: [PATCH net-next 3/9] IB/ipoib: Add support for acting as VIF

From: Or Gerlitz <redacted>
Date: Wed, 11 Jul 2012 12:59:41 +0300

On 7/11/2012 11:19 AM, David Miller wrote:

quoted

handle_ing() goes into the packet scheduler and qdisc layer, the qdisc
layer uses skb->cb[] via struct qdisc_skb_cb

Oh, I knew that the qdisc layer touches skb->cb[] but thought it only
happens on the TX flow...

We have them on the RX flow too, they are called ingress qdiscs (as
opposed to egress qdiscs on the TX side).

There is nothing mysterious about them, they've been there for more
than 15 years.