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From: James Yonan <james@openvpn.net>
To: netdev <netdev@vger.kernel.org>
Subject: Can ndo_select_queue save data in skb->cb?
Date: Wed, 05 Nov 2014 10:57:00 -0700	[thread overview]
Message-ID: <545A64EC.309@openvpn.net> (raw)

Is it permissible for a net driver's ndo_select_queue method to save 
data in skb->cb for later use in ndo_start_xmit?

Also, is it necessary for users of skb->cb to zero out their private 
data after use to prevent it from being misinterpreted by other layers? 
  I noticed some commits in the log (such as 462fb2) are zeroing out the 
skb->cb area for this reason.

Thanks,
James

             reply	other threads:[~2014-11-05 18:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-05 17:57 James Yonan [this message]
2014-11-05 18:16 ` Can ndo_select_queue save data in skb->cb? Eric Dumazet
2014-11-05 18:38   ` Cong Wang
2014-11-05 18:53     ` Eric Dumazet
2014-11-05 19:23       ` John Fastabend

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