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Message-Id: <20120206.143230.1415707004934341114.davem@davemloft.net> Date: Mon, 06 Feb 2012 14:32:30 -0500 (EST) From: David Miller <davem@...emloft.net> To: roland@...nel.org Cc: eric.dumazet@...il.com, ogerlitz@...lanox.com, sean.hefty@...el.com, herbert@...dor.hengli.com.au, linux-rdma@...r.kernel.org, shlomop@...lanox.com, netdev@...r.kernel.org Subject: Re: [PATCH net-next V2] gro: introduce gro_mac_header_len From: Roland Dreier <roland@...nel.org> 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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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