From: David Miller <[email protected]> Date: Mon, 06 Feb 2012 14:32:30 -0500 (EST)
> From: Roland Dreier <[email protected]> > Date: Mon, 6 Feb 2012 11:23:21 -0800 > >> Does the netdev driver own skb->cb between hard_header >> and start_xmit? If so we could use that instead of stealing >> some header space, and that would at least let us not lie >> about hard_header_len. > > Unfortunately the packet scheduler sits between the hard_header() > call (via neigh_*_output() --> dev_hard_header()) and when the > device xmit method is invoked. > > And the packet scheduler can make use of the skb->cb[], for > include/net/sch_generic.h:qdisc_skb_cb Actually there is a way to make this work. Define your ipoib_skb_cb something like: struct ipoib_skb_cb { struct qdisc_skb_cb qdisc_cb; ... ipoib stuff goes here ... }; That way you can use the SKB cb area for your ipoib info without interfering with the packet scheduler. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
